JPH04190846A - Adsorbent for preventing gasoline evaporation and its manufacturing method - Google Patents
Adsorbent for preventing gasoline evaporation and its manufacturing methodInfo
- Publication number
- JPH04190846A JPH04190846A JP2318288A JP31828890A JPH04190846A JP H04190846 A JPH04190846 A JP H04190846A JP 2318288 A JP2318288 A JP 2318288A JP 31828890 A JP31828890 A JP 31828890A JP H04190846 A JPH04190846 A JP H04190846A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- sample
- measured
- hardness
- gasoline
- 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.)
- Granted
Links
- 239000003502 gasoline Substances 0.000 title claims abstract description 24
- 238000001704 evaporation Methods 0.000 title claims description 8
- 230000008020 evaporation Effects 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000003463 adsorbent Substances 0.000 title abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 74
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011148 porous material Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 7
- 230000000704 physical effect Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000004438 BET method Methods 0.000 claims abstract description 3
- 238000001179 sorption measurement Methods 0.000 claims description 22
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 10
- 239000003245 coal Substances 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 7
- 235000005074 zinc chloride Nutrition 0.000 claims description 5
- 239000011592 zinc chloride Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 abstract description 13
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 7
- 239000003610 charcoal Substances 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- 238000003795 desorption Methods 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 239000004484 Briquette Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- LPLLVINFLBSFRP-UHFFFAOYSA-N 2-methylamino-1-phenylpropan-1-one Chemical compound CNC(C)C(=O)C1=CC=CC=C1 LPLLVINFLBSFRP-UHFFFAOYSA-N 0.000 description 1
- 241001561902 Chaetodon citrinellus Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 241000132539 Cosmos Species 0.000 description 1
- 235000005956 Cosmos caudatus Nutrition 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は主に自動車に搭載するガソリン蒸散捕集装置（
キャニスタ−）に使用する吸着剤として優れたガソリン
蒸散防止用成型活性炭及びその製造方法に関するもので
ある。[Detailed Description of the Invention] [Industrial Field of Application] The present invention mainly relates to a gasoline evaporation and collection device (
This invention relates to molded activated carbon for preventing gasoline evaporation, which is excellent as an adsorbent for use in canisters, and a method for producing the same.
〔従来の技術］
自動車のガソリンタンクから蒸散し大気中にガソリンが
放出されるのを防止する為に、活性炭を用いたガソリン
蒸散捕集装置（キャニスタ−）が自動車に搭載される。[Prior Art] In order to prevent gasoline from evaporating from the automobile's gasoline tank and being released into the atmosphere, a gasoline evaporation collection device (canister) using activated carbon is mounted on an automobile.
このキャニスタ−では通常、燃料タンク等の燃料系から
発生するガソリン蒸気を活性炭に一旦吸着させ、その後
、外気を活性炭に導入する事によって活性炭に吸着され
たガソリンを脱着させ、脱離したガソリンをキャブレタ
ーに導入し燃焼させている。従来、このようなキャニス
タ−に使用される吸着剤は、ヤシガラ炭、木質炭、及び
石炭類を原料とし賦活する破砕粒状炭、又は、これら原
料を粉砕し造粒後賦活した造粒破砕炭が使用されていた
。In this canister, gasoline vapor generated from a fuel system such as a fuel tank is usually adsorbed on activated carbon, and then outside air is introduced into the activated carbon to desorb the gasoline adsorbed on the activated carbon, and the desorbed gasoline is transferred to the carburetor. is introduced and burned. Conventionally, the adsorbents used in such canisters are coconut husk charcoal, wood charcoal, and crushed granular charcoal activated from coal as raw materials, or granulated crushed charcoal that is activated after pulverizing these raw materials and granulating them. It was used.
［発明が解決しようとする課題］
しかしながら、従来、この種の吸着剤として知られてい
る活性炭は、蒸散したガソリンの吸着効率も高めるため
、できるだけミクロポア孔粒〉３５人の多いものが使用
されていた。例えば、市販のキャニスタ−用活性炭の場
合、孔径３５〜７０人の、比較的大きいボアの存在量は
０．０５ｍ１／ｍｌ以下と少なかった。そのため、初期
性能は良好なものの、効果の持続性（寿命）に問題があ
った。[Problems to be Solved by the Invention] However, activated carbon, which has conventionally been known as this type of adsorbent, has been used with as many micropore particles as possible in order to increase the adsorption efficiency of evaporated gasoline. Ta. For example, in the case of commercially available activated carbon for canisters, the amount of relatively large bores with pore diameters of 35 to 70 was as small as 0.05 m1/ml or less. Therefore, although the initial performance was good, there was a problem with the sustainability of the effect (life span).
更に、この吸着剤としては、粉末状でなく粒状のものが
望ましいが、従来、吸着効率の良好なものは強度が弱い
と言う課題があった。Furthermore, it is desirable that the adsorbent be in the form of granules rather than powder, but conventional adsorbents with good adsorption efficiency have had the problem of being weak in strength.
そこで本発明者等は、かかる課題を解決すべ（鋭意検討
した結果、活性炭の細孔径をあまり小さくすることなく
、比較的に大きい細孔径をある特定量以上存在させ、し
かも、特定の硬度を有する成型活性炭を用いた場合には
、初期性能はあまり変わらず、しかも、耐久劣化性能に
優れているうえ、強度的にも問題ない事を見いだし本発
明に到達した。Therefore, the inventors of the present invention have devised a method to solve this problem (as a result of intensive studies, the activated carbon has a relatively large pore size of a certain amount or more without reducing the pore size too much, and has a specific hardness. When molded activated carbon is used, the initial performance does not change much, it has excellent durability and deterioration performance, and there is no problem in terms of strength, and the present invention has been achieved.
即ち、本発明の目的は、自動車のキャニスタ−性能で重
要な初期吸脱着性能、長期使用時の耐久劣化性能が優れ
ている薬品賦活炭の成型を捉供するものであり、その要
旨とするところは、液体窒素法５−ＢＥＴ法で測定した
比表面積が８００〜２５００ｒｒ？／ｇ、７７にでの窒
素吸着量からクランストン−インクリー法で求めた３５
〜７０人の細孔量が、成型炭１ ｔｎｌ当り０．０５〜
０．２ ｍｌ、粒径０．５〜１０ｍｍ、且つ硬さ２０％
以上の物性値を有することを特徴とするガソリン蒸散防
止用成型活性炭及び、塩化亜鉛による賦活法により得た
活性炭粉末を無機バインダーの存在下、混練、造粒した
のち乾燥及び焼成することによる前記物性値を有するガ
ソリン蒸散防止用成型活性炭の製造方法に存する。That is, the purpose of the present invention is to provide a method for forming chemically activated carbon that has excellent initial adsorption/desorption performance, which is important for automotive canister performance, and excellent durability and deterioration performance during long-term use. , the specific surface area measured by liquid nitrogen method 5-BET method is 800 to 2500rr? 35 determined by the Cranston-Inkley method from the nitrogen adsorption amount at /g, 77
~70 people have a pore volume of 0.05 per tnl of briquette coal
0.2 ml, particle size 0.5-10 mm, and hardness 20%
Molded activated carbon for gasoline evaporation prevention characterized by having the above physical property values, and the above physical properties obtained by kneading and granulating activated carbon powder obtained by an activation method using zinc chloride in the presence of an inorganic binder, followed by drying and firing. The present invention relates to a method for producing shaped activated carbon for preventing gasoline transpiration having a value.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明の成型活性炭の物性値は、液体窒素法５−ＢＥＴ
法で測定した比表面積が８００〜２５０Ｏｒｒｒ ／
ｇ、７７にでの窒素吸着量からクランストン−インクリ
ー法で求めた３５〜７０人の細孔量が、成型炭１ｍｌ当
り、０．０５〜０．２ ｍｌ２好ましくは、０．１〜０
．２ ｔｎｌである。この３５〜７０人細孔量が少ない
場合、キャニスタ−を長期使用時にガソリン成分が細孔
中に蓄積され、自動車走行中の空気による脱離性が低下
し、吸着性能が大幅に低下する。逆に３５〜７０人細孔
量が多すぎると長期使用時の吸着性能低下は抑えられる
が、初期吸着性能が低下しキャニスタ−としての吸着性
能が十分には発現しない。また、成型活性炭の粒径は０
．５〜１０ｍｍ、好ましくは１〜５胴である。The physical properties of the shaped activated carbon of the present invention are determined by the liquid nitrogen method 5-BET.
The specific surface area measured by the method is 800 to 250 Orrr /
The pore volume of 35 to 70 people, determined by the Cranston-Inkley method from the nitrogen adsorption amount in
．． 2 tnl. If the amount of pores is small, gasoline components will accumulate in the pores when the canister is used for a long period of time, and the ability to be removed by air during driving of a car will decrease, resulting in a significant decrease in adsorption performance. On the other hand, if the pore volume is too large (35 to 70), the deterioration in adsorption performance during long-term use can be suppressed, but the initial adsorption performance will decrease and the adsorption performance as a canister will not be fully developed. In addition, the particle size of molded activated carbon is 0
．． 5 to 10 mm, preferably 1 to 5 cylinders.
そして、さらに、本発明に係る活性炭は、硬さ〔１３ｍ
の直径の鋼球２０個が入ったステンレス製ポット（容量
１５０ａ／りに試料１． ００ｇを入れ１２Ｏｒｐｍで
１５分間回転させた後、試料を６０メツシユの篩で、篩
分して篩上の重量を測定した時の供試試料に対する篩上
試料の重量％］が２０％以上、好ましくは４０％以上で
ある。この粒径及び硬さを有することによりキャニスタ
−用として特に適するものである。Furthermore, the activated carbon according to the present invention has a hardness of [13 m
Pour 1.00 g of sample into a stainless steel pot (capacity 150 a) containing 20 steel balls with a diameter of The weight percent of the sieved sample relative to the test sample when measured is 20% or more, preferably 40% or more.Having this particle size and hardness makes it particularly suitable for canister use.
本発明で規定する成型活性炭を効果的に製造する為には
通常、原料炭としてはおが屑、木材チップを用い、そし
て賦活剤としては、塩化亜鉛を用いる。かかる、粉末活
性炭の粒度は０．３ ｍｍ以下で、好ましくは４４ミク
ロン（３２５メツシユ）以下が５０％以上のものが望ま
しい。In order to effectively produce the shaped activated carbon defined in the present invention, sawdust or wood chips are normally used as the raw coal, and zinc chloride is used as the activator. The particle size of the powdered activated carbon is 0.3 mm or less, preferably 50% or more of 44 microns (325 mesh) or less.
このような粉末活性炭を無機バインダーの存在下、混練
、造粒するが、無機バインダーとしては、通常ヘントナ
イト白土が好ましく、その使用量は例えば活性炭に対し
て５〜５０重量部であることが望ましい。ベントナイト
白土としては、Ｎａ系、Ｃａ系があるが、好ましくはＮ
ａ系ヘントナイト白土が良い。混練操作は、通常、活性
炭粉末とヘントナイト白土を常温でニーダ−、ミキサー
で混合しこれに活性炭に対し５０〜２００重量部の水を
注入して混練し、混練物が可塑性を生じ、手で固まる状
態となるまで混練する。この混練の操作は連続的に行っ
ても良いし、ハツチ操作でも良いが、十分にベントナイ
ト粉末を分散させないと、製品強度が保持できない。混
練機としては、通常、コンテイニアスニーダ、ニーダ−
、ナウターミキサ−等が適している。次に、混練物を押
出し造粒機、転勤造粒機、ロール成型機、プレス等で成
型し造粒炭を得る。造粒機としては、押出造粒機が好ま
しい。この際の成型炭のサイズは上述の所望の大きさに
なるように調製される。続いて、乾燥後、不活性雰囲気
（酸素濃度１ｖｏ１％以下）中で、例えば、４００〜８
００ ”Ｃ１好ましくは５５０〜７００°Ｃで焼成し目
的の成型活性炭とする。このように、原料炭及び賦活法
の種類、そして、造粒条件などを選定することにより、
本発明の成型活性炭を製造することができる。Such powdered activated carbon is kneaded and granulated in the presence of an inorganic binder. As the inorganic binder, hentonite clay is usually preferred, and the amount used is preferably, for example, 5 to 50 parts by weight based on the activated carbon. There are Na-based and Ca-based bentonite clays, but preferably N
A-type hentonite clay is good. The kneading operation is usually performed by mixing activated carbon powder and hentonite clay at room temperature in a kneader or mixer, then adding 50 to 200 parts by weight of water to the activated carbon and kneading.The kneaded material becomes plastic and hardens by hand. Knead until smooth. This kneading operation may be performed continuously or by hatching, but unless the bentonite powder is sufficiently dispersed, the strength of the product cannot be maintained. As a kneading machine, a continuous kneader or a kneader is usually used.
, Nauta mixer, etc. are suitable. Next, the kneaded material is molded using an extrusion granulator, transfer granulator, roll molding machine, press, etc. to obtain granulated coal. As the granulator, an extrusion granulator is preferable. The size of the briquette charcoal at this time is adjusted to the desired size described above. Subsequently, after drying, in an inert atmosphere (oxygen concentration 1 vol% or less), for example, 400 to 8
00 "C1 is preferably fired at 550 to 700°C to obtain the desired shaped activated carbon. In this way, by selecting the type of raw coal and activation method, granulation conditions, etc.
The shaped activated carbon of the present invention can be produced.
次に、本発明を実施例により更に具体的に説明するが、
その要旨を越えない限り以下の実施例に限定されるもの
ではない。尚、強度の指標としては振動粉化率、硬さの
値を測定した。また吸着性能の指標としてはｎ−ブタン
破過有効吸着量、ガソリン劣化試験を実施した。これら
の測定法は下記の通りである。Next, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited to the following examples unless it exceeds the gist thereof. As indicators of strength, the vibration pulverization rate and hardness were measured. In addition, as an index of adsorption performance, n-butane breakthrough adsorption amount and gasoline deterioration test were conducted. These measurement methods are as follows.
（振動粉化率）
容積４６ｍ１のプラスチック共栓付ガラスビンに試料１
０ｍ１を入れペイントコンディショナー（レッドデビル
社製）に配置し、１５分間振動させる。次いで試料を６
０メツシユの篩で篩分けして発生微粉量を測定し供試試
料に対する６０メ・７シユ下の微粉量の重量％を粉化率
とする。(Vibration powdering rate) Sample 1 was placed in a glass bottle with a plastic stopper with a volume of 46 m1.
Place in a paint conditioner (manufactured by Red Devil) and vibrate for 15 minutes. Then the sample
The amount of fine powder generated is measured by sieving with a 0 mesh sieve, and the pulverization rate is defined as the weight percent of the amount of fine powder below 60 mesh/7 mesh with respect to the test sample.
（硬さ）
１３ｍｍ直径の鋼球２ｏ個が入った、ステンレス製ポッ
ト（容積１５０１Ｉｌりに試料１． ００ｇを入ｔＬ１
２０ｒｐｍで１５分間回転させる。次いで試料を６０メ
ツシユの篩で篩分けして篩上の重量を測定し供試試料に
対する篩上試料の重量％を硬さとする。(Hardness) Stainless steel pot containing 20 steel balls with a diameter of 13 mm (1.00 g of sample per volume 1501 L1)
Spin at 20 rpm for 15 minutes. Next, the sample is sieved through a 60-mesh sieve, the weight on the sieve is measured, and the weight percent of the sample on the sieve relative to the sample is defined as hardness.
（ｎ−ブタン破過有効吸着量）
（１）試料を１５０°Ｃ１３ｈｒ乾燥しデシケータ−中
で放冷する。(N-butane breakthrough adsorption amount) (1) Dry the sample at 150°C for 13 hours and leave to cool in a desiccator.
（２）内径１０ｃｍの円筒容器に試料をＡＳＴＭ Ｂ
Ｄ換算で６５０ｍｌ充填する。(2) Place the sample in a cylindrical container with an inner diameter of 10 cm using ASTM B
Fill 650ml in terms of D.
（３）２５°Ｃの恒温室に容器を置きｎ−ブタン（純度
９９．５％以上）を上向流で０．５（１／ｍ１ｎ）の流
量で吸着させる。破過の検知は、可燃ガス濃度計（ブタ
ン用ＸＰ３１４型新コスモス電機製）で０．３ｖｏ１％
迄、吸着させる。(3) Place a container in a constant temperature room at 25°C and adsorb n-butane (purity 99.5% or higher) at a flow rate of 0.5 (1/mln) in an upward flow. Detection of breakthrough is done using a combustible gas concentration meter (XP314 for butane, manufactured by New Cosmos Electric) at 0.3vo1%.
Let it absorb until.
（４）容器を外し秤量し破過吸着量を算出する。(4) Remove the container, weigh it, and calculate the breakthrough adsorption amount.
（５）破過吸着後の容器をセットし下向流で乾燥空気を
８．１ （１／ｍ ｉ ｎ）で２０分間流し脱着を行う
。 （２５０ＢＥＤ ＶＯＬＵＭＥ）（６）脱着後の
容器は取り外し秤量し脱着量を算出する。(5) After breakthrough adsorption, the container is set and dry air is flowed downward at 8.1 (1/min) for 20 minutes to perform desorption. (250BED VOLUME) (6) Remove the container after desorption and weigh it to calculate the amount of desorption.
（７）上記（３）〜（６）を合計６回繰返し、４〜６回
の破過吸着量、脱着量の平均値を算出する。(7) Repeat steps (3) to (6) above six times in total, and calculate the average value of the breakthrough adsorption amount and desorption amount for four to six times.
ｎ−ブタン破過吸着量（ｇ／ １００ ｍｊ２）吸脱着
量の平均値
活性炭容積（ｄり
〔ガソリン劣化試験〕
（１）破過有効吸着量測定後、容器の上部注入口より、
ガソリンを、溢れる迄、注入する。n-Butane breakthrough adsorption amount (g/100 mj2) Average value of adsorption/desorption amount Activated carbon volume (d [Gasoline deterioration test]) (1) After measuring the breakthrough effective adsorption amount, from the upper injection port of the container,
Pour in gasoline until it overflows.
（２）１時間放置後、下部より液体ガソリンを抜き出す
。(2) After leaving it for 1 hour, drain the liquid gasoline from the bottom.
（３）所定時間、乾燥空気を下向流で通気させる。(3) Dry air is ventilated in a downward flow for a predetermined period of time.
（４）破過有効吸着量の測定を行い、２回目の吸着量を
劣化後性能とする。(4) Measure the breakthrough effective adsorption amount, and use the second adsorption amount as the performance after deterioration.
（５）新炭の破過有効吸着量と劣化後性能の比率から劣
化率を算出する。(5) Calculate the deterioration rate from the ratio of the breakthrough effective adsorption amount of fresh coal to the performance after deterioration.
実施例１
原料となる塩化亜鉛賦活粉末炭（３２５メツシュ下８０
％）１００重量部、ヘントナイト白土２５部をハツチ式
のニーダ−で混合後、水道水を１２０重量部添加し混練
を３０分間実施した。この混練物をディスクペレッタ（
不二バウダル製）テ直径２聴、長さ４〜６朧の形状に押
し出し成型をした。この成型炭を１５０ ’Ｃで６時間
乾燥後、外熱式のロータリーキルンでＮ２ガスを１ｆｆ
ｉ／ｍｉｎ通気し焼成を６５０°Ｃ迄１ｏ″Ｃ／ Ｍ
Ｉ Ｎ （７） 昇？に速度で行い３０ｒｎｉｎ保持後
冷却し成型活性炭を得た。この成型活性炭について５−
ＢＥＴ比表面積、３５〜７０人細孔量、充填密度、振動
粉化率、硬さ、破過ブタン有効吸着量を測定するととも
に、ガソリン劣化試験を実施し、表１に示す結果を得た
。Example 1 Zinc chloride activated powdered charcoal (325 mesh, 80
%) and 25 parts of hentonite clay were mixed in a hatch-type kneader, then 120 parts by weight of tap water was added and kneaded for 30 minutes. This kneaded material is mixed with a disc pelleter (
(Manufactured by Fuji Baudal) It was extruded into a shape with a diameter of 2 mm and a length of 4 to 6 mm. After drying this briquette at 150'C for 6 hours, 1ff of N2 gas was added in an externally heated rotary kiln.
i/min ventilation and firing up to 650°C 1o''C/M
I N (7) Noboru? The molding process was carried out at a speed of 30 rpm, and then cooled to obtain shaped activated carbon. About this molded activated carbon 5-
The BET specific surface area, 35 to 70 pore volume, packing density, vibration pulverization rate, hardness, and effective adsorption amount of breakthrough butane were measured, and a gasoline deterioration test was conducted, and the results shown in Table 1 were obtained.
実施例２
実施例１とは細孔量が異なる塩化亜鉛粉末活性炭にて実
施例１と同じ製造条件で試料を作製し測定を実施した。Example 2 A sample was prepared using zinc chloride powder activated carbon having a different pore volume from that of Example 1 under the same manufacturing conditions as Example 1, and measurements were performed.
比較例１〜３
市販のキャニスタ−用活性炭（Ａ−Ｃ社品）について実
施例１と同様に物性値を測定するとともに、ガソリン劣
化試験を行った結果を表１に示す。Comparative Examples 1 to 3 Physical properties of commercially available activated carbon for canisters (manufactured by A-C) were measured in the same manner as in Example 1, and the results of a gasoline deterioration test are shown in Table 1.
この結果より、実施例に比較し、３５〜７０人の細孔量
が少なく、初期性能は同等であっても、ガソリンによる
劣化後の吸着性能が実施例に比べ１４％〜５３％低いこ
とが判る。From this result, the pore volume of 35 to 70 people is smaller than in the example, and even though the initial performance is the same, the adsorption performance after degradation by gasoline is 14% to 53% lower than in the example. I understand.
（発明の効果〕
本発明の成型活性炭は、強度面、初期性能、ガソリン劣
化性能の両面から、キャスター用活性炭として非常に有
効である。(Effects of the Invention) The shaped activated carbon of the present invention is very effective as activated carbon for casters in terms of strength, initial performance, and gasoline deterioration performance.
Claims (2)
００〜２５００ｍ＾２／ｇ、７７Ｋでの窒素吸着量から
クランストン−インクリー法で求めた３５〜７０Åの細
孔量が成型炭１ｍｌ当り０．０５〜０．２ｍｌ、粒径が
０．５ｍｍ〜１０ｍｍ、且つ硬さ〔１３ｍｍ直径の鋼球
２０個が入ったステンレス製ポット（容積１５０ｍｌ）
に試料１．００ｇを入れ、１２０ｒｐｍで１５分間回転
させた後、試料を６０メッシュの篩で篩分して篩上の重
量を測定した時の供試試料に対する篩上試料の重量％〕
２０％以上の物性値を有することを特徴とするガソリン
蒸散防止用成型活性炭。(1) Specific surface area measured by liquid nitrogen method S-BET method is 8
The amount of pores of 35 to 70 Å determined by the Cranston-Inkley method from the amount of nitrogen adsorption at 00 to 2500 m^2/g and 77 K is 0.05 to 0.2 ml per ml of molded coal, and the particle size is 0.5 mm to Stainless steel pot (volume 150ml) containing 20 steel balls with a diameter of 10mm and hardness [13mm]
After putting 1.00 g of sample into the and rotating at 120 rpm for 15 minutes, the sample was sieved through a 60 mesh sieve and the weight on the sieve was measured.The weight% of the sample on the sieve relative to the test sample]
Molded activated carbon for preventing gasoline evaporation, characterized by having physical property values of 20% or more.
機バインターの存在下、混練、造粒したのち乾燥及び焼
成することを特徴とする請求項１記載のガソリン蒸散防
止用成型活性炭の製造方法。(2) The method for producing shaped activated carbon for preventing gasoline evaporation according to claim 1, characterized in that activated carbon powder obtained by an activation method using zinc chloride is kneaded and granulated in the presence of an inorganic binder, and then dried and fired.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2318288A JP3024208B2 (en) | 1990-11-22 | 1990-11-22 | Adsorbent for preventing gasoline evaporation and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2318288A JP3024208B2 (en) | 1990-11-22 | 1990-11-22 | Adsorbent for preventing gasoline evaporation and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04190846A true JPH04190846A (en) | 1992-07-09 |
| JP3024208B2 JP3024208B2 (en) | 2000-03-21 |
Family
ID=18097530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2318288A Expired - Lifetime JP3024208B2 (en) | 1990-11-22 | 1990-11-22 | Adsorbent for preventing gasoline evaporation and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3024208B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015051261A (en) * | 2013-06-28 | 2015-03-19 | セブ ソシエテ アノニム | Filter cartridge for air purifier |
| CN113967465A (en) * | 2021-11-05 | 2022-01-25 | 临沂三禾生物质科技有限公司 | Adhesion-free formed formaldehyde adsorption particle and preparation method and application thereof |
| CN116870862A (en) * | 2023-07-12 | 2023-10-13 | 西安热工研究院有限公司 | A method to enhance the pores of amorphous activated coke |
-
1990
- 1990-11-22 JP JP2318288A patent/JP3024208B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015051261A (en) * | 2013-06-28 | 2015-03-19 | セブ ソシエテ アノニム | Filter cartridge for air purifier |
| JP2019034238A (en) * | 2013-06-28 | 2019-03-07 | セブ ソシエテ アノニム | Filter cartridge for air cleaner |
| CN113967465A (en) * | 2021-11-05 | 2022-01-25 | 临沂三禾生物质科技有限公司 | Adhesion-free formed formaldehyde adsorption particle and preparation method and application thereof |
| CN116870862A (en) * | 2023-07-12 | 2023-10-13 | 西安热工研究院有限公司 | A method to enhance the pores of amorphous activated coke |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3024208B2 (en) | 2000-03-21 |
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