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1.发明授权
公开(公告)号：US5320816A
公开(公告)日：1994-06-14
申请号：US964323
申请日：1992-10-21
申请人： Susan S. Tsai , Stephen A. Bedell , Larry H. Kirby , Aubrey J. Rhymes, Jr. , Richard D. Varjian
发明人： Susan S. Tsai , Stephen A. Bedell , Larry H. Kirby , Aubrey J. Rhymes, Jr. , Richard D. Varjian
CPC分类号： B01D61/145 , B01D53/60 , B01D61/243 , B01D61/44
摘要： The simultaneous abatement of NO and SO.sub.2 in flue gas is provided by an absorption process and apparatus utilizing an absorbent composition comprising an aqueous solution of chelates and sulfite salts. Metal chelates oxidized to an inactive state are electrochemically reduced. In the electrochemical cell, nickel or stainless steel anode materials are stable and may be used in the place of platinum coated anode materials when the anolyte pH is maintained greater than 12. At these conditions, the anode is corrosion resistant with a long operating time between replacement. Ultrafiltration or Donnan dialysis may be used to separate the chelate sorbents from the waste salts to reduce the loss of expensive chelate sorbents. Alternatively, an anionic exchange membrane can be used to electrodialytically separate waste sulfur/nitrogen salts from the absorbent solution.
摘要翻译： 通过吸收方法和使用包含螯合物和亚硫酸盐的水溶液的吸收剂组合物的装置来提供烟道气中的NO和SO 2的同时减少。 氧化成无活性状态的金属螯合物电化学还原。 在电化学电池中，当阳极电解液pH保持大于12时，镍或不锈钢阳极材料是稳定的，并且可以用于代替铂涂覆的阳极材料。在这些条件下，阳极是耐腐蚀的，具有长的操作时间 替代。 可以使用超滤或Donnan透析法将螯合吸附剂与废盐分离，以减少昂贵螯合吸附剂的损失。 或者，阴离子交换膜可用于电离渗析从废吸收剂溶液中分离废硫/氮盐。
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2.发明授权
公开(公告)号：US5196146A
公开(公告)日：1993-03-23
申请号：US784203
申请日：1991-10-28
CPC分类号： C23G1/26 , C11D1/83 , C11D3/0073 , C11D3/28
摘要： An aqueous formulation for cleaning grease and oil from metal, plastic, glass or other surfaces includes water, a surfactant, and a corrosion-inhibiting amount of a 2-piperazinone. The surfactant is chosen from the class of materials possessing at least some ability in aqueous solution to disperse the grease and oil in an aqueous suspension. The formulation preferably includes both an anionic and a nonionic surfactant. The 2-piperazinone inhibits corrosion of the metal or other surface without unduly reducing the dispersive ability of the surfactant(s). The preferred 2-piperazinones for use in the disclosed invention are 4-(2-hydroxyethyl)-2-piperazinone (4-HEP) and N,N-dimethyl-2-piperazinone (NNDP). The formulation is used by agitation in contact with the surface to be cleaned, for example, by mechanical agitation of the surface, by spraying the formulation against the surface, or by the application of ultrasound waves. A concentrate for preparing the formulation contains the surfactant(s) and 2-piperazinone at a concentration 5 to 20 times their concentrations in the formulation; the concentrate is then diluted with 5 to 20 parts of water to yield the formulation.
摘要翻译： 用于从金属，塑料，玻璃或其他表面清洁油脂和油的水性制剂包括水，表面活性剂和防腐蚀量的2-哌嗪酮。 表面活性剂选自在水溶液中具有至少一些能力的材料，以将油脂和油分散在水性悬浮液中。 制剂优选包括阴离子和非离子表面活性剂。 2-哌嗪酮抑制金属或其他表面的腐蚀，而不会过度降低表面活性剂的分散能力。 用于本发明的优选的2-哌嗪酮是4-（2-羟乙基）-2-哌嗪酮（4-HEP）和N，N-二甲基-2-哌嗪酮（NNDP）。 通过与待清洁的表面接触的搅拌使用该制剂，例如通过机械搅动表面，通过将制剂喷雾在表面上，或通过施加超声波来使用。 用于制备制剂的浓缩物含有浓度为制剂浓度5至20倍的表面活性剂和2-哌嗪酮; 然后将浓缩物用5至20份水稀释以得到制剂。
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