JPH03106854A - Solidifying agent for dry cleaning sludge - Google Patents
Solidifying agent for dry cleaning sludgeInfo
- Publication number
- JPH03106854A JPH03106854A JP1241060A JP24106089A JPH03106854A JP H03106854 A JPH03106854 A JP H03106854A JP 1241060 A JP1241060 A JP 1241060A JP 24106089 A JP24106089 A JP 24106089A JP H03106854 A JPH03106854 A JP H03106854A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- solidifying agent
- cleaning
- dry cleaning
- acid amide
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 20
- 238000005108 dry cleaning Methods 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 8
- 229930195729 fatty acid Natural products 0.000 claims abstract description 8
- 239000000194 fatty acid Substances 0.000 claims abstract description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005977 Ethylene Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 10
- 150000004665 fatty acids Chemical group 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- -1 methylene bis fatty acid Chemical class 0.000 claims description 3
- 238000004821 distillation Methods 0.000 abstract description 14
- 239000002904 solvent Substances 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 5
- 150000001408 amides Chemical class 0.000 abstract description 3
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 9
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 6
- 229950011008 tetrachloroethylene Drugs 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 4
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000005909 Kieselgur Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- GFQOFGWPGYRLAO-UHFFFAOYSA-N dodecanamide;ethene Chemical compound C=C.CCCCCCCCCCCC(N)=O.CCCCCCCCCCCC(N)=O GFQOFGWPGYRLAO-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- WCZVSEOBNBZLEY-UHFFFAOYSA-N ethene;hexadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCC(N)=O WCZVSEOBNBZLEY-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- FTQWRYSLUYAIRQ-UHFFFAOYSA-N n-[(octadecanoylamino)methyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCNC(=O)CCCCCCCCCCCCCCCCC FTQWRYSLUYAIRQ-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
本発明はドライクリーニング蒸留釜内のスラッジを廃棄
するための処理方法におけるスラッジ固化剤および固化
方法に関するものである。The present invention relates to a sludge solidifying agent and a solidifying method in a treatment method for disposing of sludge in a dry cleaning still.
従来のドライクリーニング蒸留釜内のスラッジを廃棄す
るための処理方法として、例えばドライクリーニングに
おいては石油系溶剤、塩素系溶剤（テトラクロルエチレ
ン、１，１．１−トリクロルエタン）フロン系溶剤（Ｒ
−１１３）を使用して衣料を洗浄するが、洗浄溶剤が汚
れてくると、汚れた溶剤を精製回収するのであるが、こ
の場合はドライクリーニング機械付属の蒸留釜を用いて
行なう。こうして溶剤回収後に蒸留釜に残存するのは主
として衣料より出る汚れとドライソーブであり多くの場
合液状である。
従来はドライクリーニング機にパウダーフィルターが常
備されており、スラッジを取り出す場合には蒸留釜にパ
ウダーフィルターのパウダー（ケイ藻土）を落としてス
ラッジを固化、もしくは扮体化させて蒸留釜より取り出
し廃棄することが可能であり、スラッジの処理も容易で
あった。
又近年、洗浄方法の合理化や簡便さなどによりパウダー
フィルターを使用せずに、代わってカーボンやアルミナ
等の吸着剤を内蔵したカートリッジフィルターやペーパ
ー（ロ紙）でホコリや毛羽だけを捕捉するカートリッジ
フィルターが普及してきた。As a treatment method for disposing of sludge in conventional dry cleaning stills, for example, in dry cleaning, petroleum solvents, chlorinated solvents (tetrachloroethylene, 1,1,1-trichloroethane), fluorocarbon solvents (R
-113) is used to wash clothes, but when the cleaning solvent becomes dirty, the dirty solvent is purified and recovered, but in this case, a distillation pot attached to the dry cleaning machine is used. What remains in the still after the solvent is recovered is mainly dirt from clothing and dry soap, which are often in liquid form. Traditionally, dry cleaning machines have been equipped with powder filters, and when removing sludge, the powder from the powder filter (diatomaceous earth) is dropped into the distillation pot to solidify or transform the sludge, which is then removed from the distillation pot and disposed of. It was possible to do this, and the sludge treatment was also easy. In addition, in recent years, cleaning methods have become more streamlined and simple, and instead of using powder filters, cartridge filters with built-in adsorbents such as carbon or alumina, or cartridge filters that only capture dust and fluff, have been introduced. has become popular.
前述のパウダーフィルター使用の場合はスラツジが固形
状もしくは粉状となるが、フィルターの目詰まりのため
、繰り返し洗いが２０〜３０回に留まり、フィルターの
掃除も煩雑である。又パウダー自身も頻繁に取り替える
必要があるため、経済的にも不利である。カートリッジ
フィルターの場合ではスラッジが液状であるため、釜よ
りの取り出し時に、こぼしたり、取り扱いにくかったり
して不便をきたしている。In the case of using the above-mentioned powder filter, the sludge becomes solid or powdered, but because the filter is clogged, repeated washing is limited to 20 to 30 times, and cleaning of the filter is also complicated. Moreover, since the powder itself needs to be replaced frequently, it is also economically disadvantageous. In the case of cartridge filters, the sludge is in liquid form, which causes inconveniences such as spillage and difficulty in handling when removing the sludge from the pot.
本発明は、このようなパウダーフィルター式およびカー
トリッジフィルター常備のドライクリーニングスラッジ
の問題点に着眼してなされたものである。すなわち、本
発明は一般式、
ＲＣＯＮＨＣＨ．ＣＨｔ ＮＨＣＯＲおよび、Ｒ’ Ｃ
ＯＮＨＣＨｓ ＮＨＣＯＲ’
（但し、式中Ｒ，Ｒ′は炭素数１１〜１９の脂肪酸残基
）で示されるエチレンビス脂肪酸アミドおよびメチレン
ビス脂肪酸アミドから選ばれた１種または二種以上を必
須成分とし、これをドライクリーニングの蒸留釜中のス
ラツジに対してｌ〜１０重量％を添加して、固化させて
廃棄することにより従来方法の不便さを解消したドライ
クリーニングスラッジの固化剤および固化方法を提供す
るものである．
（手段を構成する要件）
スラッジを固化するため適用される固化剤としては、一
般式、
ＲＣＯＮＨＣＨｔ ＣＨ！ ＮＨＣＯＲまたは、Ｒ’
ＣＯＮＨＣＨ２ＮＨＣＯＲ′
（但し、式中Ｒ，Ｒ’は炭素数１１〜１９の脂肪酸残基
）で示されるエチレンビス脂肪酸アミドまたはメチレン
ビス脂肪酸アミドであり、この２種のそれぞれ単独また
は併用であっても良い。脂肪酸の炭素数としては１ｌ〜
１９のときが好ましい。炭素数１１未満の場合は、融点
が低いためスラッジの同化能力が乏しく、炭素数が２０
を越えると融点が高過ぎ、スラッジと均一に溶解しない
ため少量では固化しにくい。
このような固化剤の添加量はスラッジに対してｌ〜１０
重量％が好ましく、より好ましくは２〜６重量％程度が
推奨される。１重量％未満では生成するゲル化物の固さ
が柔らかく目的とする本発明の効果が得られず、また１
０重量％を越えた量を添加しても、それ以上の効果は必
要なく、経済的に不利になる。
又該必須成分のほかの添加成分としては、消泡剤、ｐＨ
中和剤、ケイ藻土が併用できる。
本発明に用いる固化剤は粉体であるがため、ドライクリ
ーニング機械に付属の蒸留釜に直接適用しなければ所定
の効果が得られないため、予め洗浄を行う前に直接釜内
に添加しておくか、蒸留釜上部に付属されている投入口
より溶剤と一緒に添加することが必要である。蒸留釜よ
り得られたスラッジは固形になるため、釜よりの取り出
しが容易であり、蒸留釜の掃除、スラッジの保管も容易
である。
又、本発明に用いる同化剤はドライクリーニング機械に
付属している蒸留釜、コンデンサー、水分離器の金属部
分の腐食を促進するものではない。The present invention has been made by focusing on the problems of dry cleaning sludge that is commonly used in powder filter type and cartridge filters. That is, the present invention provides the general formula, RCONHCH. CHt NHCOR and R' C
ONHCHs NHCOR' (wherein R and R' are fatty acid residues having 11 to 19 carbon atoms) as an essential component one or more selected from ethylene bis fatty acid amide and methylene bis fatty acid amide; To provide a solidifying agent and a solidifying method for dry cleaning sludge, which eliminates the inconvenience of conventional methods by adding 1 to 10% by weight of sludge to the sludge in a dry cleaning still and solidifying it before disposal. It is. (Requirements constituting the means) The solidifying agent applied to solidify the sludge has the general formula: RCONHCHt CH! NHCOR or R'
It is an ethylene bis fatty acid amide or a methylene bis fatty acid amide represented by CONHCH2NHCOR' (where R and R' are fatty acid residues having 11 to 19 carbon atoms), and these two types may be used alone or in combination. The number of carbon atoms in fatty acids is 1l~
19 is preferable. If the number of carbon atoms is less than 11, the assimilation ability of the sludge is poor due to the low melting point, and if the number of carbon atoms is less than 20
If the melting point exceeds 100%, the melting point will be too high and it will not dissolve uniformly with the sludge, making it difficult to solidify in small amounts. The amount of such a solidifying agent added is 1 to 10 liters per sludge.
The amount is preferably 2% to 6% by weight, more preferably about 2 to 6% by weight. If it is less than 1% by weight, the hardness of the gelled product produced will be too soft and the desired effect of the present invention will not be obtained;
Even if the amount exceeds 0% by weight, no further effect is required and it becomes economically disadvantageous. In addition to the essential components, additional components include antifoaming agents, pH
Neutralizer and diatomaceous earth can be used together. Since the solidifying agent used in the present invention is a powder, the desired effect cannot be obtained unless it is applied directly to the distillation pot attached to the dry cleaning machine. Therefore, it must be added directly to the distillation pot before cleaning. It is necessary to either add it together with the solvent from the inlet attached to the top of the distillation pot. Since the sludge obtained from the still is solid, it is easy to remove from the still, and it is also easy to clean the still and store the sludge. Further, the assimilating agent used in the present invention does not promote corrosion of metal parts of distillers, condensers, and water separators attached to dry cleaning machines.
本発明の固化剤は融点が高く、常温では粉体であり溶剤
に溶解しないが、蒸留時には溶剤に溶解し、スラッジ成
分と均一に溶解混合される。一度スラッジ成分と均一溶
解した固化剤は、冷却すると融点以下になり再び固化し
、同時にスラッジも固化させる作用が出てくる。The solidifying agent of the present invention has a high melting point, is a powder at room temperature, and does not dissolve in a solvent, but it dissolves in a solvent during distillation and is uniformly dissolved and mixed with the sludge components. Once the solidifying agent is uniformly dissolved with the sludge components, when it is cooled, the temperature drops below the melting point and solidifies again, and at the same time, the sludge also solidifies.
次に、本発明を実施例より具体的に説明する。
実施例１
クリーニング工場で固化剤を使用し、下記条件で実施し
た。
クリーニング
テトラクロルエチレン用ドライクリーニング機三菱パー
マックＭＰ−５１２（三菱重工業株式会社製）を用いた
。
クＩ−ニング 冫
衣料１２ｋｇをドライ機に入れ、テトラクロルエチレン
で７分間洗浄を行う。洗浄終了後、衣料は脱液、乾燥工
程になるが、洗浄液（テトラクロルエチレン）は付属の
蒸留釜に入り蒸留精製される。精製されたテトラクロル
エチレンは次回の洗浄に使用される。なお、洗浄液には
カチオン製ドライ洗剤を添加するが、その添加量は０．
３％（溶剤１００ｍＩ２に０．３ｍｆｆ）である。蒸留
釜の温度は１４５〜１５５℃である。試験では２０回ク
リーニングを行う。
Ｌ傷及亘且ＩＡ
予めクリーニング試験開始前に、蒸留釜にエチレンビス
ステアリン酸アミドの所定量を入れておき、２０回クリ
ーニング後、釜よりテトラクロルエチレンが蒸発しなく
なったら釜の加温を止め、釜よりスラッジを取り出す。
このときスラッジ量を測定する。
ゲル ゛１ 冫
取り出したスラッジを１００ｍＪ２のビーカーに入れ、
温度２５℃でゲル強度（測定器は株式会社山電製クリー
プメーターＲＥ−３３０５型１０ｍｍ球形ブランジャー
）を測定した。その結果を第１表に示した。５０ｇ以上
では固化状態を示し、数値が大きくなればなるほど固さ
が増すことを示す．
第１表より、本発明例はゲル強度１００ｇ以上を示し、
いずれも固化していることが分かる。
実施例２
固化剤としてエチレンビスラウリン酸アミドを用いて実
施例１と同様に実施した。その結果を第２表に示した。
実施例３
固化剤としてメチレンビスステアリン酸アミドを用いて
実施例１と同様に実施した。その結果を第３表に示した
。
実施例４
固化剤としてメチレンビスバルミチン酸アミドとエチレ
ンビスパルミチン酸アミドの等量混合物を用いて実施例
１と同様に実施した。その結果を第４表に示した。
第２〜４表より、いずれも固化していることが分かる。
実施例５
機械、洗浄液等を下記条件に変え実施した。
ク１−ニング
１，１．１−トリクロルエタン用ドライクリーニング機
クリーンアップＥ ＳＣＬ−９１５２（三洋電機待機
株式会社製）を用いた。
クリーニング 法
衣料１３ｋｇをドライ機に入れ、１，１．１−トリクロ
ルエタンで７分間洗浄を行う。実施例１と同様な方式で
洗浄を２０回行いスラッジを取り出す。ドライ洗剤とし
てカチオン性ドライ洗剤を０．５％（溶剤１０−Ｏｒｒ
＋Ｊ２に０．５ｍβ）使用した。なお、蒸留釜の温度は
１００℃〜１２０’Ｃである．
乱化及亙亙１進
あらかじめクリーニング試験開始前に、蒸留釜にエチレ
ンビスステアリン酸アミドの所定量を入れておき、２０
回クリーニング後、釜より１．１．１−トリクロルエタ
ンが蒸発しなくなったら釜の加温を止め、釜よりスラッ
ジを取り出す。このときスラッジ量を測定する。
ゲノレ 濱１ ′去
実施例１と同様の方法により第５表の結果を得た。いず
れも固化状態を示した。
第１表
第２表
第３表Next, the present invention will be explained in more detail with reference to Examples. Example 1 A solidifying agent was used at a cleaning factory and the test was carried out under the following conditions. Cleaning A dry cleaning machine for tetrachlorethylene, Mitsubishi Permac MP-512 (manufactured by Mitsubishi Heavy Industries, Ltd.), was used. Cleaning 12 kg of clothing is placed in a drying machine and washed with tetrachlorethylene for 7 minutes. After washing, the clothes undergo a dehydration and drying process, and the washing liquid (tetrachlorethylene) enters an attached distillation pot and is purified by distillation. The purified tetrachlorethylene will be used for the next cleaning. Note that a cationic dry detergent is added to the cleaning solution, but the amount added is 0.
3% (0.3 mff in 100 mI2 of solvent). The temperature of the distillation pot is 145-155°C. In the test, cleaning is performed 20 times. Before starting the cleaning test, add a predetermined amount of ethylene bisstearamide to the distillation pot, and after cleaning 20 times, stop heating the pot when tetrachlorethylene no longer evaporates from the pot. , remove the sludge from the pot. At this time, measure the amount of sludge. Gel ゛1 Put the removed sludge into a 100mJ2 beaker,
Gel strength was measured at a temperature of 25° C. (the measuring device was a creep meter RE-3305 model 10 mm spherical plunger manufactured by Yamaden Co., Ltd.). The results are shown in Table 1. A weight of 50g or more indicates a solidified state, and the larger the number, the harder it is. From Table 1, the examples of the present invention exhibit a gel strength of 100 g or more,
It can be seen that both are solidified. Example 2 The same procedure as in Example 1 was carried out using ethylene bislauric acid amide as a solidifying agent. The results are shown in Table 2. Example 3 The same procedure as in Example 1 was carried out using methylene bisstearamide as a solidifying agent. The results are shown in Table 3. Example 4 The same procedure as in Example 1 was carried out using a mixture of equal amounts of methylene bisbalmitic acid amide and ethylene bispalmitic acid amide as the solidifying agent. The results are shown in Table 4. From Tables 2 to 4, it can be seen that all of the samples were solidified. Example 5 An experiment was carried out by changing the machine, cleaning liquid, etc. to the following conditions. Cleaning 1,1.1-Trichloroethane dry cleaning machine Cleanup ESCL-9152 (manufactured by Sanyo Electric Standby Co., Ltd.) was used. Cleaning: Put 13 kg of legal clothing into a dryer and wash with 1,1,1-trichloroethane for 7 minutes. Washing is performed 20 times in the same manner as in Example 1, and the sludge is taken out. As a dry detergent, use 0.5% cationic dry detergent (solvent 10-Orr
0.5 mβ) was used for +J2. The temperature of the distillation pot is 100°C to 120'C. Before starting the cleaning test, put a predetermined amount of ethylene bisstearamide into a distillation pot, and
After cleaning twice, when 1.1.1-trichloroethane no longer evaporates from the pot, the heating of the pot is stopped and the sludge is taken out from the pot. At this time, measure the amount of sludge. The results shown in Table 5 were obtained using the same method as in Example 1. All showed a solidified state. Table 1 Table 2 Table 3
Claims (1)
ＯＮＨＣＨ＿２ＮＨＣＯＲ′ （但し、式中Ｒ、Ｒ′は炭素数１１〜１９の脂肪酸残基
）で示されるエチレンビス脂肪酸アミドおよびメチレン
ビス脂肪酸アミドから選ばれた１種または２種以上を必
須成分とすることを特徴とするドライクリーニングスラ
ッジ固化剤。 ２、請求項１記載の固化剤を使用するクリーニングスラ
ッジの固化方法。[Claims] 1. General formula, RCONHCH_2CH_2NHCOR and R'C
ONHCH_2NHCOR' (wherein R and R' are fatty acid residues having 11 to 19 carbon atoms) One or more selected from ethylene bis fatty acid amide and methylene bis fatty acid amide are essential components. Characteristic dry cleaning sludge solidifying agent. 2. A method for solidifying cleaning sludge using the solidifying agent according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1241060A JPH03106854A (en) | 1989-09-18 | 1989-09-18 | Solidifying agent for dry cleaning sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1241060A JPH03106854A (en) | 1989-09-18 | 1989-09-18 | Solidifying agent for dry cleaning sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03106854A true JPH03106854A (en) | 1991-05-07 |
Family
ID=17068710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1241060A Pending JPH03106854A (en) | 1989-09-18 | 1989-09-18 | Solidifying agent for dry cleaning sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03106854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994004290A1 (en) * | 1992-08-19 | 1994-03-03 | British Technology Group Inter-Corporate Licensing Limited | Process for encapsulating a waste material |
-
1989
- 1989-09-18 JP JP1241060A patent/JPH03106854A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994004290A1 (en) * | 1992-08-19 | 1994-03-03 | British Technology Group Inter-Corporate Licensing Limited | Process for encapsulating a waste material |
| GB2284808A (en) * | 1992-08-19 | 1995-06-21 | British Tech Group Int | Process for encapsulating a waste material |
| GB2284808B (en) * | 1992-08-19 | 1996-06-05 | British Tech Group Int | Process for encapsulating a waste material |
| US5562590A (en) * | 1992-08-19 | 1996-10-08 | British Technology Group Limited | Process for encapsulating a waste material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100210135B1 (en) | A process and composition for cleaning contaminants with terpent and monobasic ester | |
| DE69901179T3 (en) | PROCEDE ET SOLVANT DE NETTOYAGE A SEC | |
| IT9067179A1 (en) | CLEANING COMPOSITION AND CLEANING PROCEDURE PARTICULARLY FOR THE REMOVAL OF RESIDUALS FROM METAL SURFACES. | |
| JPH08117685A (en) | Method for two-stage cleaning or dehydration using siloxane azeotropic mixture | |
| JPH03106854A (en) | Solidifying agent for dry cleaning sludge | |
| WO1999046319A1 (en) | Abrasion resistant polymeric foam and stain receivers made therefrom | |
| US3452110A (en) | Methods of treating used dry cleaning solvents | |
| EP0587917B1 (en) | Cleaning agent | |
| US3309166A (en) | Method of purifying dry cleaning solvents | |
| JP3564773B2 (en) | Recovery method of water-soluble organic solvent | |
| JP4721579B2 (en) | Cleaning method and cleaning device | |
| JP5627881B2 (en) | Dirt separation and removal method | |
| JPS585309B2 (en) | How to wash industrial bag filters and rags contaminated with oil and metal powder, etc. | |
| US4193765A (en) | Drycleaning assembly and method for removing impurities and residual moisture from an organic drycleaning solvent | |
| JPH093494A (en) | Detergent composition for mold | |
| CA2281853A1 (en) | Use of water-soluble polymeric polycarboxylates in cleaner formulations with abrasive action | |
| JPH1017891A (en) | Detergent composition for dry cleaning | |
| JPH0925496A (en) | Detergent for wax and water-soluble processing solution | |
| JPH02191493A (en) | Treatment of distilled pitch of dry cleaning liquid | |
| US3677955A (en) | Treatment of dry cleaning baths | |
| US3505005A (en) | Dry cleaning method | |
| JPH0691093A (en) | One-bath two-stage cleaning method and device therefor | |
| JP3675941B2 (en) | Cleaning composition | |
| US1979399A (en) | Dry cleaning process | |
| JPH02178250A (en) | Production of metallic soap |