公开(公告)号：US4734200A

公开(公告)日：1988-03-29

申请号：US848130

申请日：1986-04-04

Applicant: W. Wes Berry

Inventor： W. Wes Berry

IPC: B01J41/04 ,  B01J47/10 ,  C02F1/42

CPC classification number: B01J47/105 ,  B01J41/043 ,  C02F1/42

Abstract: A process for treating acidic process waste water containing SiF.sub.6.sup.2- is disclosed. The process is carried out by contacting the waste water with a strong base ion exchange resin and loading SiF.sub.6.sup.2- onto the resin. Phosphate ions are then removed from the waste water by raising the pH of the waste water to between about 5.0 and 7.0 and contacting the waste water with a strong base ion exchange resin and loading phosphate ions onto the resin.

Abstract translation: 公开了一种处理含有SiF62-的酸性工艺废水的方法。 该过程通过将废水与强碱性离子交换树脂接触并将SiF62-加载到树脂上来进行。 然后通过将废水的pH提高到约5.0-7.0之间并将废水与强碱性离子交换树脂接触并将磷酸根离子负载到树脂上，从废水中除去磷酸根离子。

公开(公告)号：US4479877A

公开(公告)日：1984-10-30

申请号：US518172

申请日：1983-07-28

Applicant: Gerald A. Guter

Inventor： Gerald A. Guter

IPC: B01J41/04 ,  C02F1/42

CPC classification number: B01J41/043 ,  Y10S210/903

Abstract: The invention relates to a method for separating nitrate from waters containing a significant amount of sulfate ion. Nitrate removal is accomplished by passing the water to be treated through a bed of a strong-base anion exchange resin which is a tributyl amine derivative of a copolymer exemplified by styrene-divinyl benzene. The tributyl species has been found to have an unusually high selectivity for nitrate over sulfate and provides not only a high capacity for nitrate removal but also economies in regeneration due to the ability to operate with only a partially regenerated resin bed.

Abstract translation: 本发明涉及一种从含有大量硫酸根离子的水中分离硝酸盐的方法。 通过使被处理水通过作为苯乙烯 - 二乙烯基苯示例的共聚物的三丁基胺衍生物的强碱性阴离子交换树脂的床进行硝酸除去。 已经发现三丁基物质对硝酸盐对硫酸盐具有非常高的选择性，并且不仅具有高的硝酸盐除去能力，而且由于仅使用部分再生的树脂床的操作能力而提供再生的经济性。

公开(公告)号：US4302548A

公开(公告)日：1981-11-24

申请号：US152240

申请日：1980-05-22

Applicant: James S. Clovis

Inventor： James S. Clovis

IPC: B01J39/04 ,  B01J39/20 ,  B01J41/04 ,  B01J41/14 ,  B01J47/04

CPC classification number: B01J47/04 ,  B01J39/043 ,  B01J39/20 ,  B01J41/043 ,  B01J41/14

Abstract: An ion exchange resin bed capable of hydraulic segregation into discrete zones of ion exchange resins having different ion exchange functionalities, the resins being produced by functionalizing fractions of a single batch or lot of precursor copolymer which have been segregated on the basis of differing hydraulic densities of the different sized particles, and the method for producing the same.

Abstract translation: 离子交换树脂床，能够水分离析成具有不同离子交换官能团的离子交换树脂的离散区域，该树脂通过官能化单批次或多个前体共聚物的级分而产生，这些级分已经基于不同的液压密度 不同尺寸的颗粒及其制造方法。

公开(公告)号：US3984314A

公开(公告)日：1976-10-05

申请号：US463649

申请日：1974-04-22

Applicant: William Fries

Inventor： William Fries

IPC: B01J41/04 ,  C02F1/68 ,  C02F9/00 ,  B01D15/04

CPC classification number: C02F1/683 ,  B01J41/043 ,  C02F2101/18

Abstract: This invention relates to the purification of industrial effluents containing cyanide ions, and cyanide precursors like acetone-cyanohydrin. More particularly, the invention relates to the purification of such effluents by utilizing a complexing compound followed by treatment with an anion exchange resin and optionally cation exchange resin to remove the cyanide complexes. The cyanide values are recovered from the resin by acid regeneration.

Abstract translation: 本发明涉及含有氰化物离子的工业废水的纯化，以及氰化物前体如丙酮 - 氰醇。 更具体地，本发明涉及通过利用络合化合物然后用阴离子交换树脂和任选的阳离子交换树脂处理以除去氰化物络合物来净化这种流出物。 通过酸再生从树脂中回收氰化物值。

公开(公告)号：US5985152A

公开(公告)日：1999-11-16

申请号：US840

申请日：1997-12-30

Applicant: Hideo Otaka ,  Nobuhiro Matsushita

Inventor： Hideo Otaka ,  Nobuhiro Matsushita

IPC: C02F1/00 ,  B01J39/04 ,  B01J41/04 ,  C02F1/42 ,  C02F5/00 ,  C23F11/173 ,  C23F14/00

CPC classification number: B01J41/043 ,  B01J39/04 ,  B01J39/043 ,  C02F2001/422 ,  C02F2001/425 ,  C02F2103/023

Abstract: Ca ion is removed by a cation exchange resin and silica and corrosive ions are removed by an anion exchange resin. Even after the anion exchange resin reaches the silica break through point or after the cation exchange resin reaches the Ca ion break through point, the supply of water is continued until the average of silica concentration or Ca ion concentration reaches a predetermined value. By supplying both treated water before the break through point and treated water after the break through point, water containing silica or Ca ion of suitable concentration can be supplied to the water system with only one anion exchange column or cation exchange column.

Abstract translation: 通过阳离子交换树脂和二氧化硅除去Ca离子，通过阴离子交换树脂除去腐蚀性离子。 即使在阴离子交换树脂达到二氧化硅破裂点之后或者在阳离子交换树脂达到Ca离子穿透点之后，继续供水直到二氧化硅浓度或Ca离子浓度的平均值达到预定值。 通过在通过点之前提供经处理的水和经过处理的水之后，可以仅使用一个阴离子交换柱或阳离子交换柱向水系统供应含有适当浓度的二氧化硅或Ca离子的水。

公开(公告)号：US5788864A

公开(公告)日：1998-08-04

申请号：US730438

申请日：1996-10-15

Applicant: Steven H. Coberly ,  Thomas H. Laven ,  Arthur L. Cummings

Inventor： Steven H. Coberly ,  Thomas H. Laven ,  Arthur L. Cummings

IPC: B01J41/04 ,  B01J49/00 ,  C02F1/42

CPC classification number: B01D53/1425 ,  B01J41/043 ,  B01J49/0013

Abstract: A process for removing thiocyanate and other anions from Type II strong base anion exchange resins with an alkali metal hydroxide is disclosed. The process is particularly beneficial to the regeneration and/or reclamation of alkanolamine solutions laden with heat stable salts, especially thiocyanate.

Abstract translation: 公开了用碱金属氢氧化物从II型强碱阴离子交换树脂中除去硫氰酸盐和其它阴离子的方法。 该方法特别有利于含有热稳定盐，特别是硫氰酸盐的链烷醇胺溶液的再生和/或回收。

公开(公告)号：US5607594A

公开(公告)日：1997-03-04

申请号：US523479

申请日：1995-09-05

Applicant: Werner Pohl ,  Johannes Menzel

Inventor： Werner Pohl ,  Johannes Menzel

IPC: B01D53/14 ,  B01J41/04 ,  C02F1/42

CPC classification number: B01J41/043 ,  B01D53/1425 ,  Y10S423/14

Abstract: In the process for purifying an aqueous MDEA-solution the formate content of the MDEA-solution circulated in a main stream between the absorber and desorber of a hydrogen sulfide wash unit for gas produced by gasification of a carbonaceous material, e.g. coal, is measured. A partial stream of MDEA-solution is withdrawn from the main stream, passed over an ion exchange medium which removes some formate present to form a partially purified partial stream and subsequently the purified partial stream is returned to the main stream. The amount of the withdrawal from the main stream is controlled so that the formate content of the main stream is maintained between 10 and 30 g/l. Only from 0.5 to 0.08% by volume need be withdrawn from the main stream to form the partial stream. The ion exchange medium can be regenerated with a hydroxide-containing solution, which is subsequently fed to an ammonia separator column of a hydrogen sulfide wash apparatus.

Abstract translation: 在MDEA水溶液的纯化过程中，MDEA溶液的甲酸盐含量在用于通过气化碳质材料产生的气体的硫化氢洗涤单元的吸收器和解吸器之间的主流中循环。 煤炭，被测量。 将MDEA-溶液的一部分流从主流中取出，通过离子交换介质，该离子交换介质去除某些甲酸盐以形成部分纯化的部分流，随后将纯化的部分流返回到主流。 控制从主流提取的量，使得主流的甲酸盐含量保持在10至30g / l之间。 需要从主流中取出0.5〜0.08体积％以形成部分流。 离子交换介质可以用含氢氧化物溶液再生，随后将其进料到硫化氢洗涤装置的氨分离塔中。

公开(公告)号：US5547579A

公开(公告)日：1996-08-20

申请号：US376193

申请日：1995-01-20

Applicant: Craig J. Brown

Inventor： Craig J. Brown

IPC: B01D61/14 ,  B01D61/02 ,  B01D61/04 ,  B01D61/16 ,  B01D61/18 ,  B01D61/58 ,  B01J41/04 ,  C01B17/90 ,  C02F1/44 ,  C23G1/36 ,  B01D61/00

CPC classification number: B01D61/027 ,  B01D61/04 ,  B01D61/58 ,  B01J41/043 ,  C01B17/902 ,  C02F1/442 ,  C23G1/36 ,  B01D2311/04 ,  B01D61/243

Abstract: Acids contaminated with multi-valent metal salts are purified by a process which involves treatment in an acid sorption unit (ASU) and a nanofiltration unit (NFU). The feed solution can first be delivered to the ASU, which produces two solutions, one high in acid concentration and the other high in metal salt concentration. The high acid concentration solution can be treated in the NFU to produce an acid end product and a reject metal salt solution which can be recirculated to the feed of the NFU. Alternatively, the high metal salt solution can be treated in the NFU, and its permeate recirculated to the ASU as eluate. In an alternative configuration, the feed is delivered first to the NFU. In all cases, the membrane reject solution from the NFU is recirculated to increase the metal salt concentration. A second NFU can be used to process the solution from the ASU which contains a high metal salt concentration.

Abstract translation: 被多价金属盐污染的酸通过涉及在酸吸附单元（ASU）和纳滤单元（NFU）中处理的方法进行纯化。 饲料溶液可以先送到ASU，产生两种溶液，酸浓度高，金属盐浓度高。 可以在NFU中处理高酸浓度溶液，以产生可以再循环到NFU进料的酸终产物和废弃金属盐溶液。 或者，高金属盐溶液可以在NFU中处理，并且其渗透物作为洗脱液再循环到ASU中。 在另一种配置中，饲料首先送到NFU。 在所有情况下，来自NFU的膜拒绝溶液被再循环以增加金属盐浓度。 第二个NFU可用于处理含有高金属盐浓度的ASU溶液。

公开(公告)号：US5518627A

公开(公告)日：1996-05-21

申请号：US396795

申请日：1995-03-01

Applicant: Masao Tomoi ,  Teruo Onozuka ,  Manabu Shindo ,  Hideaki Kiniwa ,  Hirohisa Kubota ,  Shintaro Sawada

Inventor： Masao Tomoi ,  Teruo Onozuka ,  Manabu Shindo ,  Hideaki Kiniwa ,  Hirohisa Kubota ,  Shintaro Sawada

IPC: B01J41/04 ,  C02F1/42

CPC classification number: B01J41/043 ,  Y10S210/90 ,  Y10S210/917

Abstract: A method for demineralizing water or an aqueous solution, which comprises contacting the water or the aqueous solution to be treated to a strongly basic anion exchanger made of a crosslinked polymer having a constituting unit of the following formula (I): ##STR1## wherein A is a C.sub.1-2 linear alkylene group, B is a C.sub.4-8 linear alkylene group, each of R1, R2 and R3 which may be the same or different, is a C.sub.1-4 alkyl group or a C.sub.2-4 alkanol group, X is a counter ion coordinated on the ammonium group, and the benzene ring D may have an alkyl group or a halogen atom as a substituent.

Abstract translation: 一种使水或水溶液软化矿物的方法，其包括将待处理的水或溶液与由具有下式（I）的构成单元的交联聚合物制成的强碱性阴离子交换剂接触： ）其中A为C1-2直链亚烷基，B为C4-8直链亚烷基，R 1，R 2和R 3可相同或不同，为C 1-4烷基或C 2-4链烷醇 基团，X是在铵基上配位的抗衡离子，苯环D可以具有烷基或卤素原子作为取代基。

公开(公告)号：US5393505A

公开(公告)日：1995-02-28

申请号：US95569

申请日：1993-07-19

Applicant: Costandi A. Audeh

Inventor： Costandi A. Audeh

IPC: B01D53/14 ,  B01J39/04 ,  B01J41/04 ,  B01J49/00 ,  C07C213/10 ,  C01B17/16 ,  C08J5/20

CPC classification number: B01D53/1456 ,  B01D53/1425 ,  B01J39/04 ,  B01J41/043 ,  B01J49/0017 ,  C07C213/10

Abstract: The present invention includes a process for rejuvenating a spent aqueous alkanolamine solution comprising use of alkyl-substituted ammonium-containing organic base treatment to remove inorganic ions.

Abstract translation: 本发明包括使废烷基醇胺水溶液回复的方法，其包括使用烷基取代的含铵有机碱处理以除去无机离子。