CN108689727A - 一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法 - Google Patents
一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法 Download PDFInfo
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- CN108689727A CN108689727A CN201710222027.9A CN201710222027A CN108689727A CN 108689727 A CN108689727 A CN 108689727A CN 201710222027 A CN201710222027 A CN 201710222027A CN 108689727 A CN108689727 A CN 108689727A
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- ammonium nitrate
- calcium sulfate
- nitrate solution
- crystal whiskers
- urea
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- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 40
- 239000013078 crystal Substances 0.000 title claims abstract description 20
- CSGLCWIAEFNDIL-UHFFFAOYSA-O azanium;urea;nitrate Chemical compound [NH4+].NC(N)=O.[O-][N+]([O-])=O CSGLCWIAEFNDIL-UHFFFAOYSA-O 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims abstract description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 6
- 239000004202 carbamide Substances 0.000 claims abstract description 6
- 239000000706 filtrate Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000002425 crystallisation Methods 0.000 claims abstract description 4
- 230000008025 crystallization Effects 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 8
- 239000000047 product Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 235000011132 calcium sulphate Nutrition 0.000 description 14
- 239000003337 fertilizer Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000000618 nitrogen fertilizer Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- -1 and from this China Substances 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- PRORZGWHZXZQMV-UHFFFAOYSA-N azane;nitric acid Chemical compound N.O[N+]([O-])=O PRORZGWHZXZQMV-UHFFFAOYSA-N 0.000 description 1
- NGLMYMJASOJOJY-UHFFFAOYSA-O azanium;calcium;nitrate Chemical compound [NH4+].[Ca].[O-][N+]([O-])=O NGLMYMJASOJOJY-UHFFFAOYSA-O 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- IKRMZAOEXULJQX-UHFFFAOYSA-N calcium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Ca+2].O1B([O-])OB2OB([O-])OB1O2 IKRMZAOEXULJQX-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/46—Sulfur-, selenium- or tellurium-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
- C30B29/62—Whiskers or needles
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/14—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Fertilizers (AREA)
Abstract
一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法，属于无机化工领域。它包括硝酸钙和硫酸铵的反应；添加结晶辅助剂；混合搅拌；混合液的过滤；对滤渣的洗涤和干燥；对滤液的浓度调和；将滤液与尿素混合；将产品包装检验入库。本发明生产成本低，工艺简单，且易操作。极具实用性和推广性。
Description
技术领域
本发明属于无机化工技术领域。
背景技术
本发明涉及到两个方面的背景技术，一方面是硫酸钙晶须方面的背景技术，另一方面是硝酸铵肥料方面的背景技术。首先介绍硫酸钙晶须的技术背景，硫酸钙晶须是指具有均匀的横截面，完整的外形，完善的内部结构的纤维状单晶体。当CaSO4含量≥98%，硫酸钙晶须的平均长径比为10～200。硫酸钙晶须被广泛的应用于高分子材料中，它不仅可以增加材料的强度和韧性，还可以起到增稠，耐热，耐磨，耐油的作用。硫酸钙晶须比其它的晶须产品价格便宜很多，性能相当，制作工艺简单，其优良的性价比使得硫酸钙晶须的需求市场十分广阔。
关于硝酸铵的背景技术，硝酸铵是一种含氮量为35%的纯氮肥，极易溶于水，容易吸湿结块，在受到猛烈撞击或高温时，容易发生爆炸性分解反应。自2002年起，我国将硝酸铵列为民用爆炸品，从此我国肥料市场禁止纯硝酸铵氮肥买卖。法律要求对农用硝酸铵肥料进行改良，使其失去爆炸性且不可还原后方可作为肥料销售和使用。目前市场上对硝酸铵的改良品主要是硝酸铵钙和尿素硝酸铵溶液（液体肥），这两种肥料产品都符合我国的法律法规，并且由于其良好的肥效在肥料市场上一直供不应求。
发明内容
本发明的主要目的有两点，其一，提供了一种产品纯度高，晶型好，能耗低，工艺简单，对环境无污染的硫酸钙晶须制备方法；其二为尿素硝酸铵溶液提供了一个新的生产途径。
本发明采用如下的技术方案来实现以上目的，具体生产步骤为：
1.调配质量浓度为15%～80%的硝酸钙溶液和质量浓度为10%～50%的硫酸铵溶液。将实际参与化学反应的硝酸钙和硫酸铵的物质的量比控制在1︰1左右，相对应的质量比大约为1.24︰1。
2.将两种溶液混合，并且加入结晶辅助剂，（辅助剂可以是结晶导向剂硫酸钙晶须，也可以是结晶改良剂氧化镁或硫酸镁），其中结晶导向剂的质量大约是生成硫酸钙质量的1%，结晶改良剂的质量是硝酸钙质量的0.1%～3%，控制温度在20℃～100℃，搅拌速度为50～300RPM，混合搅拌时间为20～80分钟，使两种溶液充分反应。
3.将所得混合液过滤，对所得滤渣洗涤，并且充分干燥，所得产品即为硫酸钙晶须。
4.过滤之后所得滤液是硝酸铵溶液，根据需要调配的尿素硝酸铵溶液的硝酸铵浓度值，将滤液进行浓缩或者稀释，然后在溶液中加入需要剂量的尿素，充分搅拌后，所得产品即为尿素硝酸铵溶液。
5.将两种产品分别包装，并检验入库。
此技术方案使用的原料是硝酸钙和硫酸铵，来源充足，价格便宜。所得硫酸钙晶须产品，晶型好，纯度大于99%，白度大于95%。所得另一个产品是尿素硝酸铵溶液，属于纯氮液体肥，含有硝态氮，铵态氮和脲态氮，肥效好。所需的生产设备简单，工艺成熟，整个生产过程绿色环保，没有有毒有害的副产品产生。
附图说明
具体实施方式由图例给出具体的实施例。图1给出的是一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法的工艺流程图，它包括硝酸钙溶液与硫酸铵溶液的混合，结晶辅助剂的添加，搅拌让反应充分，对混合液的过滤，对滤渣的洗涤和干燥，对滤液的调和，与尿素的混合，对所得产品硫酸钙晶须和尿素硝酸铵溶液的包装，检验入库。
Claims (2)
1.一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法，其主要特征是：将硝酸钙溶液和硫酸铵溶液混合反应，反应中加入结晶辅助剂，待反应完成后，将所得混合液进行过滤，将所得的硫酸钙滤渣洗涤，并且进行干燥，从而得到硫酸钙晶须。
2.如权利要求1所述的一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法，其主要特征是：对所得的硝酸铵滤液的浓度进行调和，并添加需要剂量的尿素进行混合，从而得到尿素硝酸铵溶液。
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| CN201710222027.9A CN108689727A (zh) | 2017-04-06 | 2017-04-06 | 一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法 |
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| CN201710222027.9A CN108689727A (zh) | 2017-04-06 | 2017-04-06 | 一种硫酸钙晶须和尿素硝酸铵溶液的联合生产法 |
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- 2017-04-06 CN CN201710222027.9A patent/CN108689727A/zh active Pending
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