公开(公告)号：US4147761A

公开(公告)日：1979-04-03

申请号：US884950

申请日：1978-03-09

申请人： John A. Wojtowicz ,  Andrew J. Klanica

发明人： John A. Wojtowicz ,  Andrew J. Klanica

IPC分类号： C01B11/04 ,  C01B11/06

CPC分类号： C01B11/04 ,  C01B11/064

摘要： A process for preparing hypochlorous acid in a sweep reactor is described in which gaseous chlorine is passed rapidly across the surface of an agitated aqueous solution of alkali metal hydroxide at a reduced temperature. The resulting gaseous product mixture of hypochlorous acid, chlorine monoxide, and unreacted chlorine is conveyed from the reactor to a suitable scrubber to produce an aqueous hypochlorous acid solution.The aqueous reaction product of the sweep reactor is a suspension of alkali metal chloride in alkali metal hypochlorite, which is withdrawn and filtered to separate the solid. The clarified aqueous solution of alkali metal hypochlorite is reacted with the aqueous hypochlorous acid solution from the scrubber, chlorine and lime to form an aqueous slurry of calcium hypochlorite. This slurry may be granulated by the spray graining technique, for example, to produce strong rounded granules of calcium hypochlorite.

摘要翻译： 描述了在吹扫反应器中制备次氯酸的方法，其中气态氯在降低的温度下迅速通过搅拌的碱金属氢氧化物水溶液的表面。 所得到的次氯酸，一氯氧化物和未反应的氯的气体产物混合物从反应器输送到合适的洗涤器以产生次氯酸水溶液。

公开(公告)号：US4089935A

公开(公告)日：1978-05-16

申请号：US703391

申请日：1976-07-08

申请人： Paul M. Waxelbaum ,  Duane A. Huston

发明人： Paul M. Waxelbaum ,  Duane A. Huston

IPC分类号： B01D25/28 ,  C01B11/06 ,  C01B11/04 ,  B01J1/00 ,  B08B7/00

CPC分类号： C01B11/064 ,  B01D25/28 ,  B01D2201/085

摘要： A process is described for recovering calcium hypochlorite values from the filter media employed in the filtration of calcium hypochlorite slurries. Deposits of Ca(OCl).sub.2 along with insoluble materials adhering to the filter media are washed with an aqueous solution of calcium hypochlorite to form a slurry of calcium hypochlorite solids. Water is used to wash the filter media to dissolve any remaining Ca(OCl).sub.2 and form a solution of calcium hypochlorite. The slurry and solution are then admixed to provide a solution of calcium hypochlorite whose concentration is controlled within the range of from about 45 to about 215 grams per liter of Ca(OCl).sub.2. This solution is employed in the production of calcium hypochlorite and is recycled to the washing step.

摘要翻译： 描述了从用于过滤次氯酸钙浆料中的过滤介质中回收次氯酸钙值的方法。 将Ca（OCl）2沉积物以及附着在过滤介质上的不溶物质用次氯酸钙水溶液洗涤，形成次氯酸钙固体的浆液。 水用于洗涤过滤介质以溶解任何剩余的Ca（OCl）2并形成次氯酸钙溶液。 然后将浆料和溶液混合以提供次氯酸钙溶液，其浓度控制在约45至约215克/升Ca（OCl）2的范围内。 该溶液用于生产次氯酸钙，并被再循环至洗涤步骤。

公开(公告)号：US3895099A

公开(公告)日：1975-07-15

申请号：US34012173

申请日：1973-03-12

申请人： OLIN CORP

发明人： SAKOWSKI WALTER J

IPC分类号： C01B11/06 ,  C01B15/03 ,  C01F11/02 ,  D06L3/06 ,  C01D3/04

CPC分类号： C01B11/064 ,  C01B15/03 ,  C01F11/02 ,  D06L4/23

摘要： A continuous process for the manufacture of calcium hypochlorite in which an aqueous slurry of lime and sodium hypochlorite is chlorinated in a mixing zone to form a sodium chloride solution containing large crystals of calcium hypochlorite which are readily separated and dried. The resulting solution containing some dissolved calcium hypochlorite is reacted with an alkali metal hydroxide to precipitate lime, which is separated and recycled to the mixing zone slurry. The lime-free solution may be used as bleach liquor or processed to precipitate solid salt useful in the preparation of brine. The remaining solution is recycled to the mixing zone slurry. Purification of fresh lime is also disclosed. The process provides an improved separation of calcium hypochlorite and sodium chloride, and recycles all solutions to minimize pollution of water resources.

摘要翻译： 一种用于制造次氯酸钙的连续方法，其中将石灰和次氯酸钠的含水浆料在混合区中氯化以形成容易分离和干燥的含有次氯酸钙大晶体的氯化钠溶液。 将含有一些溶解的次氯酸钙的所得溶液与碱金属氢氧化物反应以沉淀出石灰，将其分离并再循环至混合区浆液。 无石灰溶液可用作漂白液或加工以沉淀用于制备盐水的固体盐。 将剩余的溶液再循环到混合区浆料中。 还公开了新鲜石灰的净化。

公开(公告)号：US3767775A

公开(公告)日：1973-10-23

申请号：US20022671

申请日：1971-11-18

申请人： NIPPON SODA CO

发明人： TATARA S ,  IWAKI Y ,  FUJISHIMA T ,  MORITA Y ,  KUMODA M

IPC分类号： C01B11/06 ,  C01B11/00 ,  C01D3/04 ,  C01F11/00

CPC分类号： C01B11/064

摘要： EQUAL WEIGHT PARTS OF SODIUM HYDROXIDE, CALCIUM HYDROXIDE AND WATER ARE ADDED TO MOTHER LIQUOR WHICH IS ALREADY PREGNANT WITH SODIUM CHLORIDE AND CALCIUM HYPOCHLORITE. CHLORINE GAS IS INTRODUCED INTO THIS MIXTURE UNDER AGITATION. THIS WILL PRODUCE SMALL SIZE CRYSTALS OF CALCIUM HYPOCHLORITE AND LARGE SIZE CRYSTALS OF SODIUM CHLORIDE WHICH CAN THEN BE READILY SEPARATED BECAUSE OF THIS SIZE DIFFERENCE.

公开(公告)号：US3760064A

公开(公告)日：1973-09-18

申请号：US3760064D

申请日：1971-10-21

申请人： KLIPFONTEIN ORGANIC PROD

发明人： DROSTE T

IPC分类号： C01B11/06 ,  C01B11/00 ,  C01F11/00

CPC分类号： C01B11/064

摘要： A process for producing crystals of neutral calcium hypochlorite of good filterability from a lime containing about 600 or more parts per million by weight of iron as Fe comprising reacting a slurry of lime with a chlorinating agent to form crystals of a basic calcium hypochlorite, preferably dibasic, adding a barium, zinc, strontium, cadmium, silver or mercury salt to the slurry to precipitate the ferrate and/or ferrite ions as an insoluble or substantially insoluble salt, allowing the basic crystals to settle out of the slurry, removing the supernatant suspension containing the salt from the crystals, and converting the basic crystals into crystals of neutral calcium hypochlorite.

摘要翻译： 一种生产具有良好过滤性的中和型次氯酸钙晶体的方法，该石灰含有约600重量份或更多份（重量百分比）的铁作为Fe，包括使石灰浆与氯化剂反应形成碱式次氯酸钙，优选二元碱 向浆液中加入钡，锌，锶，镉，银或汞盐，使高铁酸盐和/或铁酸根离子沉淀成不溶或基本上不溶的盐，使碱性晶体沉淀出浆液，除去上清悬浮液 从晶体中含有盐，并将碱性晶体转变为中性次氯酸钙晶体。

公开(公告)号：US3635837A

公开(公告)日：1972-01-18

申请号：US3635837D

申请日：1970-05-18

申请人： OLIN MATHIESON

发明人： ROBSON HOMER L

IPC分类号： C01B11/06 ,  C02F1/76 ,  B01J1/16

CPC分类号： C01B11/064 ,  C02F1/76

摘要： Sprayed-formed sodium nitrate preparations containing added diluents.

摘要翻译： 喷雾形成的含有添加稀释剂的硝酸钠制剂。

公开(公告)号：US3584996A

公开(公告)日：1971-06-15

申请号：US3584996D

申请日：1969-03-17

申请人： KLIPFONTEIN ORGANIC PROD

发明人： HUGHES GILBERT O

IPC分类号： C01B11/06

CPC分类号： C01B11/064

摘要： CALCIUM HYPOCHLORITE IS PRODUCED WITH RELATIVELY LOW CALCIUM CHLORIDE CONTENT, BY CHLORINATING AN AQUEOUS SUSPENSION OF CALCIUM HYDROXIDE, REMOVING LIQUID FROM THE SUSPENSION ON A FILTER OR CENTRIFUGE TO PRODUCE A CAKE, AND CONTACTING THE CAKE WITH AN AQUEOUS SODIUM HYPOCHLORITE SOLUTION WHILE MAINTAINING THE CAKE ON THE FILTER OR CENTRIFUGE. NOT ONLY IS THE CALCIUM CHLORIDE CONTENT GREATLY REDUCED, BUT ALSO THE AMOUNT OF SODIUM HYPOCHLORITE CAN BE REDUCED SUBSTANTIALLY BELOW STOICHIOMETRIC, E.G. 40 TO 70% OF STOICHIOMETRIC.

公开(公告)号：US3557010A

公开(公告)日：1971-01-19

申请号：US3557010D

申请日：1967-08-16

申请人： ALLIED CHEM

发明人： SKRYPA MICHAEL J ,  BARAN FRANCIS R ,  LOW WILLIAM W

IPC分类号： C01B11/06

CPC分类号： C01B11/062

摘要： PRODUCTION OF HYPOCHLORITE SOLUTIONS CONTAINING LESS THAN 0.1 PART PER MILLION OF IRON WHICH COMPRISES ADDING CALCIUM CHLORIDE AND AN ALKALI METAL CARBONATE TO SAID HYPROCHLORITE SOLUTIONS CONTAINING IRON IMPURITIES AND PERMITTING THE PRECIPITATION OF CALCIUM CARBONATE WHICH RESULTS IN HYPOCHLORITE SOLUTIONS CONTAINING LESS THAN 0.1 PART PER MILLION OF IRON.

公开(公告)号：US3036013A

公开(公告)日：1962-05-22

申请号：US79327759

申请日：1959-02-16

申请人： OLIN MATHIESON

发明人： JASZKA DANIEL J ,  MAREK RONALD W

IPC分类号： C01B11/06 ,  C11D3/395 ,  D06L3/06

CPC分类号： C11D3/3953 ,  C01B11/064 ,  C01B11/068 ,  D06L4/23 ,  Y10T428/2993

公开(公告)号：US2965443A

公开(公告)日：1960-12-20

申请号：US75481458

申请日：1958-08-13

申请人： HOOKER CHEMICAL CORP

发明人： OSBORNE WESLEY M ,  EDGE JR DEXTER ,  JOHNSTON ARTHUR D

IPC分类号： C01B11/06

CPC分类号： C01B11/064 ,  Y10T137/034