公开(公告)号：US3847757A

公开(公告)日：1974-11-12

申请号：US36654573

申请日：1973-06-04

Applicant: NAT STEEL CORP

Inventor： SMITH R

IPC: B01J49/00 ,  C25D21/22 ,  C23F13/00 ,  C01G37/00 ,  C23B5/16

CPC classification number: C25D21/22 ,  B01J49/08

Abstract: Chromium values are recovered from wash water following a chemical treatment step in electrotinplating lines in a process comprising treating in a cation exchange zone, treating in an anion exchange zone, regenerating the anion exchange zone, treating effluent from said regeneration in a cation exchange zone and passing effluent from the cation exchange zone to a storage zone, passing effluent from said regeneration to the storage zone without intermediate cation exchange treatment.

Abstract translation: 在电镀锡线中的化学处理步骤之后，在阳离子交换区中进行处理，在阴离子交换区中处理，再生阴离子交换区，在阳离子交换区中处理来自所述再生的流出物，以及 将流出物从阳离子交换区传递到储存区，将来自所述再生的流出物传递到储存区而不进行中间阳离子交换处理。

公开(公告)号：US3792153A

公开(公告)日：1974-02-12

申请号：US3792153D

申请日：1972-02-28

Applicant: UNIV CALIFORNIA

Inventor： CREEK S ,  FORRESTER R

IPC: B01J49/00 ,  C01B7/05 ,  C01B17/60 ,  C01B25/22 ,  C01F5/10 ,  C01B25/06

CPC classification number: C01F5/10 ,  B01J49/08 ,  C01B7/055 ,  C01B17/60 ,  C01B25/22

Abstract: AMMONIA AND HYDROGEN CHLORIDE ARE RECOVERED FROM AMMONIUM CHLORIDE BY INTERACTION WITH MAGNESIUM OXIDE. THE MAGNESIUM OXIDE IS NOT LOST IN THE REACTION, BUT IS RECYCLED AGAIN AND AGAIN. THE FREE AMMONIA AND HYDROGEN CHLORIDE FIND UTILITY IN MANY INDUSTRIAL PROCESSES, E.G., THE PRODUCTION ALKALI METAL BICARBONATES AND CARBONATES, ION EXCHANGE REGENERATION AND THE LIKE. TO BE OPERATIVE IN THE PRODUCTION PROCESS, MGO MUST BE PREPARED UNDER CAREFULLY CONTROLLED CONDITIONS OF TEMPERATURE.

公开(公告)号：US3388059A

公开(公告)日：1968-06-11

申请号：US66376967

申请日：1967-08-28

Applicant: NALCO CHEMICAL CO

Inventor： WIRTH JR LOUIS F

IPC: B01J39/04 ,  B01J49/00

CPC classification number: B01J39/04 ,  B01J49/08 ,  B01J41/04

公开(公告)号：US3197401A

公开(公告)日：1965-07-27

申请号：US33135063

申请日：1963-12-27

Applicant: ROHM & HAAS

Inventor： YOSHINORI ARAI

IPC: B01J49/00

CPC classification number: B01J49/08

公开(公告)号：US2422054A

公开(公告)日：1947-06-10

申请号：US46834842

申请日：1942-12-09

Applicant: PERMUTIT CO

Inventor： TIGER HOWARD L

IPC: B01J39/00 ,  B01J49/00 ,  C02F1/52 ,  C13B20/14

CPC classification number: C13B20/14 ,  B01J39/00 ,  B01J49/08 ,  C02F1/5281 ,  B01J41/00

公开(公告)号：US2301669A

公开(公告)日：1942-11-10

申请号：US24818038

申请日：1938-12-29

Applicant: ADOLF RICHTER

Inventor： ADOLF RICHTER

IPC: B01D15/04 ,  B01J39/00 ,  B01J47/14 ,  B01J49/00

CPC classification number: B01J47/14 ,  B01J39/00 ,  B01J49/08 ,  B01J41/00