公开(公告)号：US4749496A

公开(公告)日：1988-06-07

申请号：US885108

申请日：1986-07-14

Applicant: Artur Reischl

Inventor： Artur Reischl

IPC: B01D15/00 ,  B01D17/02 ,  B01D17/022 ,  B01D37/03 ,  B01D39/00 ,  B01J20/20 ,  B01J20/22 ,  B01J20/30 ,  C02F1/28 ,  C02F9/00 ,  C08J3/00 ,  C08J9/00 ,  C08J11/02 ,  C09K3/32 ,  D01F13/00

CPC classification number: C02F1/288 ,  B01D17/0202 ,  B01D37/03 ,  B01D39/00 ,  C02F2101/34

Abstract: Mixtures of water with water-miscible solvent(s) containing suspended, emulsified and/or colloidal impurities are purified by contacting the water-solvent mixture with an at least partially open celled foam containing 1-75 weight percent active pulverulent additives. The liquid and solid phases are then separated. The active pulverulent additives which may be incorporated into the foam by means of a binder or by incorporation in the reactants used to form the foam include active coals, brown coal dust, peat, iron oxides and brown coal coke dust.

Abstract translation: 通过使水溶剂混合物与含有1-75重量％活性粉末添加剂的至少部分开放的泡孔泡沫接触来纯化水与含有悬浮，乳化和/或胶体杂质的水混溶性溶剂的混合物。 然后分离液相和固相。 可以通过粘合剂掺入到泡沫中或通过掺入用于形成泡沫的反应物中的活性粉末添加剂包括活性煤，褐煤粉，泥炭，氧化铁和褐煤焦炭粉。

公开(公告)号：US4201740A

公开(公告)日：1980-05-06

申请号：US913638

申请日：1978-06-08

Applicant: Rupert B. Hurley

Inventor： Rupert B. Hurley

IPC: D01F6/18 ,  D01F13/00

CPC classification number: D01F13/00 ,  D01F6/18 ,  Y02P70/625

Abstract: Filamentary vinyl polymer compositions are commonly prepared according to the following procedure:(a) polymerizing a vinyl monomer in a concentrated aqueous inorganic salt solution to produce a vinyl polymer solution;(b) spinning the resulting vinyl polymer solution into a coagulating bath containing an aqueous solution of the same inorganic salt as that employed in the polymerization step, the concentration of inorganic salt in the coagulating bath being maintained at a level which affords precipitation of the vinyl polymer to form a coherent filamentary gel;(c) washing the gel so produced;(d) recovering the concentrated aqueous inorganic salt solution from the washing and coagulation steps; and(e) recycling the recovered concentrated aqueous inorganic salt solution into the polymerizing step. In such a process, undesirable copper ion impurities accumulate in the recovered concentrated aqueous inorganic salt solution. According to the present invention, the recovered aqueous inorganic salt solution is purified and activated prior to the recycling and use thereof by:(1) introducing a source of sulfide ion into the recovered aqueous inorganic salt solution in an amount sufficient to provide a concentration of about 2 to about 200 ppm of sulfide ion, based upon the concentrated aqueous inorganic salt solution; and(2) removing the precipitate resulting from said sulfide ion introduction.

Abstract translation: 长丝乙烯基聚合物组合物通常根据以下程序制备：（a）在浓缩的无机盐水溶液中聚合乙烯基单体以制备乙烯基聚合物溶液; （b）将得到的乙烯基聚合物溶液旋转到含有与聚合步骤中使用的相同无机盐的水溶液的凝结浴中，凝固浴中无机盐的浓度保持在乙烯基 聚合物形成相干丝状凝胶; （c）洗涤如此生产的凝胶; （d）从洗涤和凝结步骤回收浓缩的无机盐水溶液; 和（e）将回收的浓缩无水盐水溶液再循环到聚合步骤中。 在这种方法中，不期望的铜离子杂质积聚在回收的浓缩无水盐水溶液中。 根据本发明，回收的无机盐水溶液在回收和再利用之前被纯化和活化，方法是：（1）将硫酸根源引入回收的无机盐水溶液中，其量足以提供浓度 约2至约200ppm的硫化物离子，基于浓缩的无机盐水溶液; 和（2）除去由所述硫化物离子引入产生的沉淀物。

公开(公告)号：US4131661A

公开(公告)日：1978-12-26

申请号：US785363

申请日：1977-04-07

Applicant: Edward K. Spitz ,  Lawton E. Cox

Inventor： Edward K. Spitz ,  Lawton E. Cox

IPC: D01F13/00 ,  B29H19/00

CPC classification number: D01F13/00 ,  Y02P70/625

Abstract: Waste asbestos generated from a production process utilizing a surfactant as the dispersant and a coagulant as a solidifying agent is recovered for reprocessing by treating the waste with an inorganic acid to react with the precipitated surfactant and solubilize the precipitating ions. The precipitating ions are removed by washing. The insoluble residue, containing asbestos and the surfactant is mixed and reacted with an alkali to form a dispersion of asbestos that may be reprocessed by conventional methods.

Abstract translation: 通过利用表面活性剂作为分散剂和凝固剂作为固化剂的生产方法产生的废石棉用于再处理，通过用无机酸处理废物与沉淀的表面活性剂反应并溶解沉淀离子。 通过洗涤除去沉淀离子。 将含有石棉和表面活性剂的不溶性残渣混合并与碱反应形成可通过常规方法再处理的石棉分散体。