JPH0873838A - Alkaline snow melting agent - Google Patents
Alkaline snow melting agentInfo
- Publication number
- JPH0873838A JPH0873838A JP21221494A JP21221494A JPH0873838A JP H0873838 A JPH0873838 A JP H0873838A JP 21221494 A JP21221494 A JP 21221494A JP 21221494 A JP21221494 A JP 21221494A JP H0873838 A JPH0873838 A JP H0873838A
- Authority
- JP
- Japan
- Prior art keywords
- snow
- alkaline
- chloride
- agent
- melting agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002844 melting Methods 0.000 title claims abstract description 47
- 230000008018 melting Effects 0.000 title claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 47
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000292 calcium oxide Substances 0.000 claims abstract description 23
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 23
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 21
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 21
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 21
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 230000008014 freezing Effects 0.000 claims abstract description 12
- 238000007710 freezing Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 8
- 239000002562 thickening agent Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 150000001805 chlorine compounds Chemical class 0.000 claims description 17
- 230000003449 preventive effect Effects 0.000 claims description 10
- 230000000881 depressing effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 20
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 18
- 239000011780 sodium chloride Substances 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract description 5
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 4
- 239000000661 sodium alginate Substances 0.000 abstract description 4
- 235000010413 sodium alginate Nutrition 0.000 abstract description 4
- 229940005550 sodium alginate Drugs 0.000 abstract description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract 2
- 238000010348 incorporation Methods 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 239000011575 calcium Substances 0.000 description 18
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 14
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 10
- 239000001110 calcium chloride Substances 0.000 description 10
- 229910001628 calcium chloride Inorganic materials 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910001629 magnesium chloride Inorganic materials 0.000 description 7
- 150000004692 metal hydroxides Chemical class 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 230000002411 adverse Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000012047 saturated solution Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- -1 that is Chemical compound 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- IVORCBKUUYGUOL-UHFFFAOYSA-N 1-ethynyl-2,4-dimethoxybenzene Chemical compound COC1=CC=C(C#C)C(OC)=C1 IVORCBKUUYGUOL-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- SZOADBKOANDULT-UHFFFAOYSA-K antimonous acid Chemical compound O[Sb](O)O SZOADBKOANDULT-UHFFFAOYSA-K 0.000 description 1
- PLLZRTNVEXYBNA-UHFFFAOYSA-L cadmium hydroxide Chemical compound [OH-].[OH-].[Cd+2] PLLZRTNVEXYBNA-UHFFFAOYSA-L 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- AEJIMXVJZFYIHN-UHFFFAOYSA-N copper;dihydrate Chemical compound O.O.[Cu] AEJIMXVJZFYIHN-UHFFFAOYSA-N 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- HDMKAUUMGFGBRJ-UHFFFAOYSA-N iron;dihydrate Chemical compound O.O.[Fe] HDMKAUUMGFGBRJ-UHFFFAOYSA-N 0.000 description 1
- IDNHOWMYUQKKTI-UHFFFAOYSA-M lithium nitrite Chemical compound [Li+].[O-]N=O IDNHOWMYUQKKTI-UHFFFAOYSA-M 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- PMQJYWORJJEMQC-UHFFFAOYSA-N manganese;dihydrate Chemical compound O.O.[Mn] PMQJYWORJJEMQC-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- AIBQNUOBCRIENU-UHFFFAOYSA-N nickel;dihydrate Chemical compound O.O.[Ni] AIBQNUOBCRIENU-UHFFFAOYSA-N 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 230000008121 plant development Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 description 1
- 229910001866 strontium hydroxide Inorganic materials 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- CVNKFOIOZXAFBO-UHFFFAOYSA-J tin(4+);tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Sn+4] CVNKFOIOZXAFBO-UHFFFAOYSA-J 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、路上雪の融雪、融氷、
路上水分の凍結防止、除雪作業を容易にするために散布
するアルカリ性融雪剤に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to snow melting on a road, melting ice,
The present invention relates to an alkaline snow melting agent which is sprayed to prevent freezing of water on the road and facilitate snow removal work.
【０００２】[0002]
【従来の技術】従来から、融雪剤若しくは凍結防止剤と
して、塩化カルシウム（ＣａＣｌ2 、２Ｈ2 Ｏ）、塩化
ナトリウム（ＮａＣｌ）、塩化マグネシウム（ＭｇＣｌ
2 、６Ｈ2 Ｏ）等の塩化化合物の薬剤が主として使用さ
れている。これらの塩化化合物は、氷点降下物質として
知られ、塩化マグネシウムの最低結氷点は−３２℃、塩
化カルシウムは−５４℃、塩化ナトリウムは−２２℃で
ある。2. Description of the Related Art Conventionally, as a snow melting agent or an antifreezing agent, calcium chloride (CaCl 2 , 2H 2 O), sodium chloride (NaCl), magnesium chloride (MgCl)
2, drug 6H 2 O) chloride compounds such have been used mainly. These chloride compounds are known as freezing point depressants, and the minimum freezing point of magnesium chloride is -32 ° C, calcium chloride is -54 ° C, and sodium chloride is -22 ° C.
【０００３】この他にも尿素〔ＣＯ（ＮＨ2)2 〕やエチ
レングリコールも一部で使用されているが、融雪効果、
経済的な面で塩化化合物より劣るので、さして多くは使
用されてない。また、粘土鉱物のモンモリロナイト等を
含む安山岩等も使用されているが舗装材に含有している
骨材を膨潤崩壊させるため問題点が多い。更に、最近
は、二次公害の少ないＣＭＡ（カルシウム、マグネシウ
ム、アセテート）も調査研究されているが、実用化には
至ってない。In addition to this, urea [CO (NH 2 ) 2 ] and ethylene glycol are also partially used, but the snow melting effect,
Not much is used because it is economically inferior to chloride compounds. Further, andesite containing clay minerals such as montmorillonite is also used, but there are many problems because the aggregate contained in the paving material is swollen and collapsed. Furthermore, recently, CMA (calcium, magnesium, acetate) with little secondary pollution has been investigated and researched, but it has not been put to practical use.
【０００４】[0004]
【発明が解決しようとする課題】塩化ナトリウム、塩化
カルシウム及び塩化マグネシウムは、前述のように凍結
温度が低く、溶解性、即効性にすぐれ、効果の持続性が
良いこと、価格が安価で供給量も豊富であること、貯
蔵、運搬及び散布がしやすいこと、等の理由によって最
も広く使用されている。As described above, sodium chloride, calcium chloride and magnesium chloride have a low freezing temperature, excellent solubility and immediate effect, good effect sustainability, inexpensive price and supply amount. It is most widely used due to its abundance, ease of storage, transportation, and application.
【０００５】しかしながら、塩化ナトリウムのナトリウ
ム、塩素イオンは、植物の水吸収の浸透圧を変化させ、
道路周辺の街路樹の脱水落葉を促し、植物の成長に悪影
響を与えると言われている。また、塩化カルシウム、塩
化マグネシウムは、水に溶解して、酸性を呈するため、
土壌が酸性となり、塩化ナトリウムと同様、植物の発育
を阻害する。更に、これらの塩化化合物は、道路周辺の
構造物であるガードレール、橋桁、道路標識、更には走
行する自動車等の鋼製品の錆発生を促進し、社会的な問
題となっている。However, the sodium and chloride ions of sodium chloride change the osmotic pressure of water absorption by plants,
It is said that it promotes the dehydration of leaves on the roadside trees around the road and adversely affects the growth of plants. Also, since calcium chloride and magnesium chloride dissolve in water and exhibit acidity,
The soil becomes acidic and, like sodium chloride, inhibits plant development. Further, these chlorinated compounds promote social corrosion by promoting rusting of steel products such as guardrails, bridge girders, road signs, and traveling automobiles, which are structures around roads.
【０００６】本発明者等は、これら従来の融雪剤の二次
的公害が塩化物水溶液の酸性を呈することが、大きな要
因になっていることに着目し、これら塩化化合物の融雪
剤にアルカリ性物質を混合、溶解して常にｐＨ８以上の
アルカリ性を保持するようにした融雪剤が、植物に対す
る悪影響を軽減すると共に、鋼製品の錆発生を抑制でき
ることを発見した。The present inventors have noticed that the secondary pollution of these conventional snow melting agents is that the acidity of the aqueous chloride solution is a major factor, and that alkaline substances are used as the snow melting agents for these chloride compounds. It was discovered that a snow-melting agent prepared by mixing and dissolving the above to keep alkalinity at pH 8 or more can reduce adverse effects on plants and suppress rust generation of steel products.
【０００７】そこで、本発明が前述の状況に鑑み、解決
しようとするところは、塩化ナトリウム、塩化カルシウ
ム及び塩化マグネシウム等の塩化化合物からなる従来の
融雪剤の利点を残しつつ、欠点を解消して植物に対する
悪影響を軽減すると共に、鋼製品の錆発生を抑制できる
アルカリ性融雪剤を提供することを目的とする。In view of the above situation, the present invention is to solve the problems while leaving the advantages of the conventional snow-melting agents composed of chloride compounds such as sodium chloride, calcium chloride and magnesium chloride. An object of the present invention is to provide an alkaline snow-melting agent that can reduce adverse effects on plants and can suppress rust generation of steel products.
【０００８】[0008]
【課題を解決するための手段】本発明は、前述の課題解
決のために、塩化化合物等の氷点降下物質とアルカリ性
化合物とを混合し、ｐＨ８以上に調整してなるアルカリ
性融雪剤を提供するものである。In order to solve the above problems, the present invention provides an alkaline snow melting agent prepared by mixing a freezing point depressing substance such as a chloride compound and an alkaline compound to adjust the pH to 8 or more. Is.
【０００９】ここで、アルカリ性化合物としては、生石
灰又は消石灰及びこれらの混合物を用いることが好まし
い。更に、防錆剤、増粘剤及び水を混合し、液状として
なることも好ましい。As the alkaline compound, quick lime or slaked lime and a mixture thereof are preferably used. Further, it is also preferable that a rust preventive agent, a thickener and water are mixed to form a liquid.
【００１０】[0010]
【作用】以上の如き内容からなる本発明のアルカリ性融
雪剤は、ｐＨ８以上に調整してなることにより、植物に
対する悪影響を軽減すると共に、鋼製品の錆発生を抑制
できるのである。By adjusting the pH of the alkaline snow-melting agent of the present invention to 8 or above, it is possible to reduce adverse effects on plants and to suppress rusting of steel products.
【００１１】アルカリ性化合物としては種々のものが存
在するが、その中で水酸化カルシウムＣａ (ＯＨ)2（消
石灰とも言う）、又は酸化カルシウムＣａＯ（生石灰）
及びそれらＣａ (ＯＨ)2とＣａＯの混合物が好ましく、
それらの作用は以下の通りである。There are various kinds of alkaline compounds, among which calcium hydroxide Ca (OH) 2 (also called slaked lime) or calcium oxide CaO (quick lime).
And their mixtures of Ca (OH) 2 and CaO are preferred,
Their actions are as follows.
【００１２】塩化化合物とＣａＯを混合した粉体の融雪
剤の場合は、散布された時、雪中の水分と発熱反応を起
して、初期融雪に大きな効果がある。 ＣａＯ＋Ｈ2 Ｏ→Ｃａ (ＯＨ)2＋１５．２ｋｃａｌ ここで、融解した水に溶けた融雪剤の水溶液は、この反
応によって生成するＣａ(ＯＨ)2によって常にｐＨ８以
上になるように成分調整されている。尚、塩化化合物と
ＣａＯを混合し、これに水を混合した融雪剤は、塩化化
合物とＣａ (ＯＨ)2を混合した融雪剤と作用効果上の差
異はない。[0012] In the case of a powder snow-melting agent in which a chloride compound and CaO are mixed, an exothermic reaction occurs with the water content in the snow when sprayed, which is very effective for initial snow melting. CaO + H 2 O → Ca (OH) 2 + 15.2kcal Here, the aqueous solution of the snow-melting agent dissolved in the melted water is adjusted to have a pH of 8 or more by Ca (OH) 2 produced by this reaction. . The snow-melting agent obtained by mixing a chloride compound and CaO and then water is not different in operational effect from the snow-melting agent obtained by mixing a chloride compound and Ca (OH) 2 .
【００１３】また、塩化化合物とＣａ (ＯＨ)2を混合し
た液状の融雪剤の場合は、未溶解のＣａ (ＯＨ)2が沈降
するので、増粘剤を加えて均一な懸濁液とすれば、散布
が容易になり、その上、粘度の増加によって散布場所か
らの流散を防ぎ融雪効果の持続性を図るのである。この
場合も、融雪剤は、ｐＨ８以上のアルカリ性に成分調整
しているので、鋼製品に対する防錆効果を有するが、防
錆剤を添加することにより更に防錆効果を高めている。Further, in the case of a liquid snow melting agent in which a chloride compound and Ca (OH) 2 are mixed, undissolved Ca (OH) 2 precipitates, so a thickener is added to form a uniform suspension. In this case, spraying becomes easier and, in addition, the increase in viscosity prevents spillage from the spraying site and promotes the sustainability of the snow melting effect. In this case as well, since the snow melting agent is adjusted to have an alkalinity of pH 8 or more, it has a rust preventive effect on steel products, but the rust preventive effect is further enhanced by adding a rust preventive agent.
【００１４】融雪剤をアルカリ性にする化合物として
は、１価金属の水酸化物である苛性ソーダ（ＮａＯ
Ｈ）、苛性カリ（ＫＯＨ）、水酸化リチウム（ＬｉＯ
Ｈ）があるが、水に対する溶解度が非常に良く強アルカ
リ性を呈し、皮膚をただれさせたり、靴を損傷させる。
また、羊毛、絹、ポリアミド、ポリエステル製の衣服に
付着すると衣服が侵されるので、非常に危険である。同
じく２価金属の水酸化物である水酸化カドミウム〔Ｃｄ
（ＯＨ）2 〕、水酸化錫〔Ｓｎ（ＯＨ)2〕、水酸化鉄
〔Ｆｅ（ＯＨ)2〕、水酸化銅〔Ｃｕ（ＯＨ)2〕、水酸化
ニッケル〔Ｎｉ（ＯＨ)2〕、水酸マグネシウム〔Ｍｇ
（ＯＨ)2〕、水酸化マンガン〔Ｍｎ（ＯＨ)2〕等多々あ
るが、殆ど水に不溶のためアルカリ性物質として、本発
明には使用することができない。As a compound for making the snow-melting agent alkaline, caustic soda (NaO) which is a hydroxide of a monovalent metal is used.
H), potassium hydroxide (KOH), lithium hydroxide (LiO
H), it has a very good solubility in water and exhibits strong alkalinity, causing skin soreness and damaging shoes.
Also, if it is attached to clothes made of wool, silk, polyamide, or polyester, the clothes will be damaged, which is very dangerous. Cadmium hydroxide [Cd, which is also a divalent metal hydroxide
(OH) 2 ], tin hydroxide [Sn (OH) 2 ], iron hydroxide [Fe (OH) 2 ], copper hydroxide [Cu (OH) 2 ], nickel hydroxide [Ni (OH) 2 ], Magnesium hydroxide [Mg
(OH) 2 ], manganese hydroxide [Mn (OH) 2 ] and the like are many, but since they are almost insoluble in water, they cannot be used in the present invention as alkaline substances.
【００１５】[0015]
【実施例】本発明は、従来から融雪剤として使用されて
きた塩化ナトリウム、塩化カルシウム及び塩化マグネシ
ウム等の塩化化合物等の氷点降下物質と、生石灰又は消
石灰及びこれらの混合物よりなるアルカリ性化合物とを
混合し、ｐＨ８以上に調整したアルカリ性融雪剤を要旨
とするものである。EXAMPLE The present invention mixes a freezing point depressing substance such as sodium chloride, calcium chloride and magnesium chloride, which has been conventionally used as a snow melting agent, with an alkaline compound consisting of quick lime or slaked lime and a mixture thereof. However, the gist is an alkaline snow-melting agent adjusted to pH 8 or higher.
【００１６】本発明に使用されるアルカリ性化合物は、
水に僅かに溶解して弱アルカリ性を呈するものが特に望
ましい。これらの目的に適合する２価金属の水酸化物と
しては、水酸化アンチモン〔Ｓｂ（ＯＨ)2〕、水酸化カ
ルシウム〔Ｃａ（ＯＨ)2〕、水酸化ストロンチウム〔Ｓ
ｒ（ＯＨ)2〕、水酸化ジルコニウム〔Ｚｒ（ＯＨ)2〕等
である。これらの水酸化物は、融雪剤に混合して、積
雪、結氷上に散布された時、溶解した水に僅かに溶解し
弱アルカリ性を呈し、溶解された水が増えると併行して
固形分で存在する水酸化物が、徐々に溶解、常に同一の
アルカリ度を維持することができる。The alkaline compound used in the present invention is
Those that are slightly soluble in water and exhibit weak alkalinity are particularly desirable. Divalent metal hydroxides suitable for these purposes include antimony hydroxide [Sb (OH) 2 ], calcium hydroxide [Ca (OH) 2 ], strontium hydroxide [S
r (OH) 2 ], zirconium hydroxide [Zr (OH) 2 ], and the like. These hydroxides, when mixed with a snow-melting agent, are slightly alkaline in the dissolved water when they are sprayed on snow or ice, and become weakly alkaline. The hydroxides present can gradually dissolve and maintain the same alkalinity at all times.
【００１７】これらの水に対する溶解度は次の如くであ
る。 Ｃａ (ＯＨ)2の粗粒、１００ｇ中の飽和溶液中のＣａ
(ＯＨ)2は０．１３０ｇ Ｃａ (ＯＨ)2の微粒、１００ｇ中の飽和溶液中のＣａ
(ＯＨ)2は０．１４３ｇ Ｓｒ（ＯＨ)2 、１００ｇ中の飽和溶液中のＳｒ
(ＯＨ)2は０．４１ｇThe solubility of these in water is as follows. Ca (OH) 2 coarse particles, Ca in saturated solution in 100 g
(OH) 2 is 0.130 g Ca (OH) 2 fine particles, Ca in a saturated solution in 100 g
(OH) 2 is 0.143 g Sr (OH) 2 , Sr in a saturated solution in 100 g
(OH) 2 is 0.41g
【００１８】言い換えれば、融雪、融氷された水１リッ
トルに対し、約１．３ｇのＣａ (ＯＨ)2が存在すれば、
Ｃａ (ＯＨ)2は完全に溶解し、その水溶液は飽和溶液と
なってｐＨ１０以上のアルカリ性を保つことができ、
１．３ｇ以上の過剰のＣａ (ＯＨ)2が存在すれば、融
雪、融氷水で希釈されても飽和溶液となっている間はｐ
Ｈ１０以上を安定に維持する。In other words, if about 1.3 g of Ca (OH) 2 is present for 1 liter of snow-melted or melted water,
Ca (OH) 2 is completely dissolved, and its aqueous solution becomes a saturated solution and can maintain the alkalinity of pH 10 or more,
If 1.3 g or more of excess Ca (OH) 2 is present, it will be p
Maintain H10 or higher stably.
【００１９】例えば、水１リットルに対して１０ｇのＣ
ａ (ＯＨ)2が存在すれば、約１．３ｇのＣａ (ＯＨ)2が
水に溶解して、アルカリ性を保持し、残り約８．７ｇの
Ｃａ(ＯＨ)2が固形分で残留し、融雪、融氷水が増加す
るに従って、徐々に溶解し常に弱アルカリ性を呈し、約
７０リットル迄、一定のアルカリ性を保持することがで
きる。For example, 10 g of C for 1 liter of water
If there is a (OH) 2, about 1.3g of Ca (OH) 2 is dissolved in water, retains the alkaline, the remaining approximately 8.7g of Ca (OH) 2 may remain in the solids, As the amount of snowmelt and ice melt water increases, it gradually dissolves and always exhibits weak alkalinity, and can maintain a constant alkalinity up to about 70 liters.
【００２０】ここで、融雪剤の単位面積当りの散布量
は、気象条件によっても異なるが約３０ｇ／ｍ2 程度で
あり、厳寒多雪個所では１００ｇ／ｍ2 になることもあ
るので、経済的にも安価で周辺植物、鋼製品に対して、
影響を与えないものでなければならない。消石灰、即ち
水酸化カルシウムは、土壌改良剤として大量に使用され
ている実績から、最も好ましく使用される。また、生石
灰、即ち酸化カルシウムは、水に溶けて水酸化カルシウ
ムとなることから同様に好ましく使用される。Here, the amount of the snow-melting agent applied per unit area is about 30 g / m 2 although it varies depending on the weather conditions, and it may be 100 g / m 2 at a severe cold and snowy place, which is economical. It's also cheap and it's cheap for surrounding plants and steel products.
It must have no effect. Slaked lime, that is, calcium hydroxide, is most preferably used because it has been used in large quantities as a soil conditioner. Further, quick lime, that is, calcium oxide, is similarly preferably used because it dissolves in water to form calcium hydroxide.
【００２１】以上のように本発明によるアルカリ性融雪
剤の基本配合は、従来の融雪剤として使用されてきた塩
化化合物と水酸化カルシウムの混合物である。As described above, the basic composition of the alkaline snow-melting agent according to the present invention is a mixture of a chloride compound and calcium hydroxide which has been used as a conventional snow-melting agent.
【００２２】粉体として供給される場合は、塩化化合物
と酸化カルシウム（ＣａＯ、生石灰）の混合物又は塩化
化合物と酸化カルシウム、水酸化カルシウム〔Ｃａ (Ｏ
Ｈ)2、消石灰〕の混合物又は塩化化合物と水酸化カルシ
ウムの混合物が好ましい。このように余分な水分を含ま
ない粉体の融雪剤を散布する場合は、融雪効果の持続
性、横断こう配の影響が少ないといった点で優れている
が、均一に散布しにくい等の使用上の問題点を有してい
る。When supplied as a powder, a mixture of a chloride compound and calcium oxide (CaO, quick lime) or a chloride compound and calcium oxide, calcium hydroxide [Ca (O
H) 2 , slaked lime] or a mixture of a chloride compound and calcium hydroxide. In this way, when applying a powder snow melting agent that does not contain excess water, it is excellent in terms of the sustainability of the snow melting effect and the effect of crossing gradient is small, but it is difficult to apply it evenly. I have a problem.
【００２３】ここで、塩化化合物と生石灰を混合したも
のは、散布すると直ちに雪中の水と生石灰が発熱反応を
起こし、その反応熱によって雪及び氷を融解するので即
効性に優れたものになり、またその反応によって生成し
た水酸化カルシウムは、水に溶解してアルカリ性を呈す
る。Here, a mixture of a chloride compound and quicklime causes an exothermic reaction between water in the snow and quicklime immediately after spraying, and the reaction heat melts the snow and ice, resulting in an excellent immediate effect. Calcium hydroxide produced by the reaction dissolves in water and exhibits alkalinity.
【００２４】溶液として供給する場合は、粉体として散
布する場合と比較して即効性に優れ、比較的均一に散布
し易くなる。When it is supplied as a solution, it is more effective immediately than when it is sprayed as powder, and it becomes easier to spray it relatively uniformly.
【００２５】しかしながら、本発明によるアルカリ性融
雪剤を液状に調整する場合は、過剰の水酸化カルシウム
を添加するため、溶解しない水酸化カルシウムは、沈降
し均一な溶液とならないため、増粘剤を添加、均一な懸
濁液とする必要がある。増粘剤としては、メチルセルロ
ーズ、アルギン酸ソーダ、ポパール等を使用する。However, when the alkaline snow-melting agent according to the present invention is adjusted to a liquid state, since an excessive amount of calcium hydroxide is added, undissolved calcium hydroxide precipitates and does not form a uniform solution. Therefore, a thickener is added. , It is necessary to make a uniform suspension. As the thickener, methyl cellulose, sodium alginate, popar, etc. are used.
【００２６】この場合、防錆剤を少量添加すると、更に
金属の腐蝕を著しく減少することができる。一般的に防
錆剤としては、亜硝酸塩、クロム酸塩、ケイ酸塩、リン
酸塩、エステル塩、有機酸塩、アミン類、アルキルフェ
ノール類、メルカプタン類、ニトロ化合物などが知られ
ているが、最も一般的に使用されているのは、亜硝酸塩
系のもので、亜硝酸カルシウム系と亜硝酸リチウム系の
ものが実用化されている。特に、亜硝酸系防錆剤は、ア
ルカリ性付与剤と併用すると、非常に効果を発揮し、実
際に本発明のアルカリ性融雪剤に混合することによっ
て、防錆効果が向上することが確認され、最も好まし
い。In this case, if a small amount of rust preventive agent is added, metal corrosion can be significantly reduced. Generally, rust inhibitors, nitrites, chromates, silicates, phosphates, ester salts, organic acid salts, amines, alkylphenols, mercaptans, nitro compounds, etc. are known. The most commonly used are nitrite type, and calcium nitrite type and lithium nitrite type have been put to practical use. In particular, the nitrite-based rust preventive agent, when used in combination with the alkalinity-imparting agent, exerts a very effective effect, and it is confirmed that the rust preventive effect is improved by actually mixing it with the alkaline snow-melting agent of the present invention, preferable.
【００２７】（実験例１）塩化カルシウム１００重量
部、消石灰４０重量部、水１４０重量部を混合した懸濁
液を得た。これを原液とし２倍から１０００倍に水で希
釈し、その水溶液のｐＨを測定した結果は次の表１の如
くであり、希釈倍率を変化させてもｐＨは殆ど変化しな
いことが示されている。Experimental Example 1 A suspension was prepared by mixing 100 parts by weight of calcium chloride, 40 parts by weight of slaked lime and 140 parts by weight of water. The stock solution was diluted 2-fold to 1000-fold with water, and the pH of the aqueous solution was measured. The results are shown in Table 1 below. It was shown that the pH hardly changed even when the dilution ratio was changed. There is.
【００２８】[0028]
【表１】 [Table 1]
【００２９】（実施例１）塩化カルシウム１００重量
部、生石灰５重量部を混合し、それに水１重量部を加え
て、混合攪拌すると、粉化し真白な粉末状の融雪剤を得
た。(Example 1) 100 parts by weight of calcium chloride and 5 parts by weight of quick lime were mixed, 1 part by weight of water was added thereto, and the mixture was stirred with stirring to obtain a powdery snow-melting agent in the form of a white powder.
【００３０】この融雪剤を路面温度−５℃の道路に３０
ｇ／ｍ2 に散布したところ、反応熱によって道路上の雪
は直ちに融雪し、更に１０ｃｍの降雪があっても積雪凍
結は全く認められなかった。This snow-melting agent is applied to a road having a road surface temperature of -5 ° C.
When sprayed at g / m 2 , the snow on the road immediately melted due to the reaction heat, and even if there was 10 cm of snowfall, no freezing of snow was observed.
【００３１】更に、ハルセル試験用陰極磨鉄板（６７×
５０×０．３ｍｍ）を５％硫酸溶液に１〜２分入れ、亜
鉛メッキを除去、これを水洗、アルコール、アセトンの
順ですばやく洗浄し、デシケーター中で乾燥秤量した。
上記融雪剤を水に溶解させて得た３重量％水溶液を試験
液とした乾湿交互試験法（試験片を２３℃に保った水溶
液に２４時間浸漬した後、水溶液から取り出し２４時間
放置）を採用し、７日間にわたって前記試験片を試験液
に浸漬し、放置する操作を繰返した。そして、試験片に
生じた錆を、５％塩酸に対してプロパルギルアルコール
を１％加えた溶液に数分〜１０分程度漬けて除去し、こ
れで完全に除去できないものは歯ブラシ等でこすり除去
し、その後アルコール、アセトンで洗浄乾燥して重量を
測定した。Further, a cathode polished iron plate (67 ×
(50 × 0.3 mm) was put in a 5% sulfuric acid solution for 1 to 2 minutes to remove zinc plating, which was quickly washed with water, alcohol and acetone in that order, and dried and weighed in a desiccator.
A dry-wet alternating test method (a test piece is immersed in an aqueous solution kept at 23 ° C. for 24 hours and then taken out of the aqueous solution and left for 24 hours) using a 3 wt% aqueous solution obtained by dissolving the above snow-melting agent in water Then, the operation of immersing the test piece in the test solution for 7 days and allowing it to stand was repeated. Then, the rust generated on the test piece is removed by immersing it in a solution containing 5% hydrochloric acid and 1% propargyl alcohol for several minutes to 10 minutes. Then, it was washed with alcohol and acetone, dried and weighed.
【００３２】この腐食性試験で得られたデーターから腐
食率を計算したところ、５．５ｇ／ｍ2 日であった。比
較のため生石灰を用いることなく、塩化カルシウムのみ
の３重量％水溶液を用いた金属腐食試験結果は１６ｇ／
ｍ2 日であった。The corrosion rate calculated from the data obtained in this corrosiveness test was 5.5 g / m 2 days. For comparison, the metal corrosion test result using a 3 wt% aqueous solution of calcium chloride alone without using quicklime was 16 g /
It was m 2 days.
【００３３】（実施例２）塩化カルシウム４０重量部、
消石灰１重量部、水１００重量部、アルギン酸ソーダ
０．１重量部、亜硝酸カルシウム１重量部を混合、液状
の融雪剤を得た。この融雪剤は、消石灰の約０．８重量
部が未溶解の状態で懸濁し、増粘剤であるアルギン酸ソ
ーダによって均一に分散している。(Example 2) 40 parts by weight of calcium chloride,
1 part by weight of slaked lime, 100 parts by weight of water, 0.1 part by weight of sodium alginate, and 1 part by weight of calcium nitrite were mixed to obtain a liquid snow melting agent. In this snow-melting agent, about 0.8 parts by weight of slaked lime is suspended in an undissolved state and uniformly dispersed by sodium alginate which is a thickener.
【００３４】この融雪剤を路面温度−７℃の約１５ｃｍ
の積雪上に散布したところ、５〜１０分で融雪し、更に
１０ｃｍの降雪があっても、積雪、凍結は全く認められ
なかった。実施例１記載の乾湿交互試験法により３重量
％の腐蝕試験を行った結果、腐食率は、３．０ｇ／ｍ2
で防錆効果は、充分認められた。散布直後はｐＨ１０．
７であり、その後、積雪約２０ｃｍあった後ｐＨ測定を
するとｐＨ１０．２でアルカリ性を保持していた。About 15 cm of this snow-melting agent at a road surface temperature of -7 ° C
When it was sprayed on the snow, the snow melted in 5 to 10 minutes, and even if there was 10 cm of snowfall, no snow accumulation or freezing was observed. As a result of a corrosion test of 3% by weight by the dry-wet alternating test method described in Example 1, the corrosion rate was 3.0 g / m 2.
Therefore, the rust preventive effect was sufficiently recognized. Immediately after spraying, the pH is 10.
It was 7, and after that, when there was about 20 cm of snow and pH was measured, it was alkaline at pH 10.2.
【００３５】[0035]
【発明の効果】以上にしてなる本発明のアルカリ性融雪
剤は、塩化化合物等の氷点降下物質とアルカリ性化合物
とを混合し、ｐＨ８以上に調整してなるので、融雪効果
は従来と同等以上ある上に、植物に対する悪影響が少な
く且つ鋼製品が錆難いといった優れたものである。EFFECTS OF THE INVENTION The alkaline snow melting agent of the present invention as described above is prepared by mixing a freezing point depressing substance such as a chloride compound and an alkaline compound and adjusting the pH to 8 or more. In addition, it is excellent in that it has little adverse effect on plants and that steel products are difficult to rust.
【００３６】また、アルカリ性化合物が生石灰又は消石
灰及びこれらの混合物よりなる場合には、水に対する溶
解度が低く、融雪効果の持続性に優れるとともに、弱ア
ルカリ性を呈するので植物に対する影響が少なく、特に
生石灰を混合した場合には水との発熱反応によって生じ
る熱によって初期融雪に大きな効果がある。When the alkaline compound consists of quick lime or slaked lime and a mixture thereof, the solubility in water is low, the snow melting effect is excellent in sustainability, and it exhibits weak alkalinity so that it has little effect on plants. When mixed, the heat generated by the exothermic reaction with water has a great effect on initial snow melting.
【００３７】更に、防錆剤、増粘剤及び水を混合し、液
状としてなる場合には、路面若しくは積雪上に均一に散
布し易く、取り扱いが容易であるとともに、即効性に優
れている。Further, when the rust preventive agent, the thickening agent and water are mixed to form a liquid, it is easy to be uniformly sprayed on the road surface or snow, and the handling is easy and the immediate effect is excellent.
Claims (3)
性化合物とを混合し、ｐＨ８以上に調整してなることを
特徴とするアルカリ性融雪剤。1. An alkaline snow melting agent, which is prepared by mixing a freezing point depressing substance such as a chloride compound and an alkaline compound and adjusting the pH to 8 or more.
びこれらの混合物よりなる請求項１記載のアルカリ性融
雪剤。2. The alkaline snow melting agent according to claim 1, wherein the alkaline compound comprises quick lime or slaked lime and a mixture thereof.
してなる請求項１又は２記載のアルカリ性融雪剤。3. The alkaline snow melting agent according to claim 1, which is in a liquid state by mixing a rust preventive agent, a thickener and water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21221494A JPH0873838A (en) | 1994-09-06 | 1994-09-06 | Alkaline snow melting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21221494A JPH0873838A (en) | 1994-09-06 | 1994-09-06 | Alkaline snow melting agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0873838A true JPH0873838A (en) | 1996-03-19 |
Family
ID=16618831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21221494A Pending JPH0873838A (en) | 1994-09-06 | 1994-09-06 | Alkaline snow melting agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0873838A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102753320B1 (en) * | 2024-08-20 | 2025-01-14 | 주식회사 이레하이테크이앤씨 | Anti-freeze composition for asphalt concrete and manufacturing method thereof |
-
1994
- 1994-09-06 JP JP21221494A patent/JPH0873838A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102753320B1 (en) * | 2024-08-20 | 2025-01-14 | 주식회사 이레하이테크이앤씨 | Anti-freeze composition for asphalt concrete and manufacturing method thereof |
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