RU2014130415A - METHOD FOR PRODUCING HIGH-QUALITY CALCIUM CHLORIDE SOLUTION - Google Patents

METHOD FOR PRODUCING HIGH-QUALITY CALCIUM CHLORIDE SOLUTION Download PDF

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Publication number
RU2014130415A
RU2014130415A RU2014130415A RU2014130415A RU2014130415A RU 2014130415 A RU2014130415 A RU 2014130415A RU 2014130415 A RU2014130415 A RU 2014130415A RU 2014130415 A RU2014130415 A RU 2014130415A RU 2014130415 A RU2014130415 A RU 2014130415A
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Russia
Prior art keywords
calcium chloride
solution
thickened
thickener
chloride solution
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RU2014130415A
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Russian (ru)
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RU2601332C2 (en
Inventor
Сергей Григорьевич Меркушов
Николай Федорович Воробьев
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Общество с ограниченной ответственностью "Зиракс"
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Priority to RU2014130415/05A priority Critical patent/RU2601332C2/en
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Publication of RU2601332C2 publication Critical patent/RU2601332C2/en

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/24—Chlorides
    • C01F11/28—Chlorides by chlorination of alkaline-earth metal compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/03—Processes of filtration using flocculating agents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/24—Chlorides
    • C01F11/32—Purification

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Treating Waste Gases (AREA)

Abstract

1. Способ производства раствора хлористого кальция, включающий в себя стадии взаимодействия кальцийсодержащего сырья с соляной кислотой, отстаивание и отделения осветленного раствора хлористого кальция, отличающийся тем, что, с целью повышения выхода продукта, повышения производительности процесса, значительного снижения загрязненных сточных вод, предлагается следующее: осветление раствора хлористого кальция осуществлять в сгустителе с применением раствора флокулянта с последующим фильтрованием сгущенного шлама.2. Способ по п. 1, отличающийся тем, что для осветления раствора хлористого кальция используется сгуститель с применением раствора флокулянта с дозировкой 0,0004-0,001% от веса раствора хлористого кальция.3. Способ по п. 1, отличающийся тем, что фильтрация сгущенного шлама осуществляется на пресс-фильтре с подачей сгущенного шлама хлористого кальция и раствора флокулянта 0,0004-0,001% от веса сгущенного шлама хлористого кальция.4. Способ по п. 1, отличающийся тем, что абгазы производства хлористого кальция направляются на систему газоочистки, состоящую из Скрубберов Вентури и пеногасителя.5. Способ по п. 1, отличающийся тем, что выход продукта с применением пресс-фильтра увеличивается на 10-25% и соответственно уменьшается на эту величину количество отходов.1. A method of producing a solution of calcium chloride, which includes the stages of the interaction of calcium-containing raw materials with hydrochloric acid, sedimentation and separation of the clarified solution of calcium chloride, characterized in that, in order to increase product yield, increase process productivity, significantly reduce contaminated wastewater, the following is proposed : clarify the calcium chloride solution in the thickener using a flocculant solution, followed by filtering the thickened sludge. 2. A method according to claim 1, characterized in that a thickener is used with a flocculant solution with a dosage of 0.0004-0.001% of the weight of the calcium chloride solution to clarify the calcium chloride solution. The method according to claim 1, characterized in that the filtration of the thickened sludge is carried out on a press filter with the feeding of the thickened slurry of calcium chloride and a flocculant solution 0.0004-0.001% by weight of the thickened slurry of calcium chloride. The method according to claim 1, characterized in that the exhaust gases of the production of calcium chloride are sent to a gas purification system consisting of Venturi Scrubbers and an antifoam. The method according to claim 1, characterized in that the yield of the product using a press filter increases by 10-25% and, accordingly, the amount of waste decreases.

Claims (5)

1. Способ производства раствора хлористого кальция, включающий в себя стадии взаимодействия кальцийсодержащего сырья с соляной кислотой, отстаивание и отделения осветленного раствора хлористого кальция, отличающийся тем, что, с целью повышения выхода продукта, повышения производительности процесса, значительного снижения загрязненных сточных вод, предлагается следующее: осветление раствора хлористого кальция осуществлять в сгустителе с применением раствора флокулянта с последующим фильтрованием сгущенного шлама.1. A method of producing a solution of calcium chloride, which includes the stages of the interaction of calcium-containing raw materials with hydrochloric acid, sedimentation and separation of the clarified solution of calcium chloride, characterized in that, in order to increase product yield, increase process productivity, significantly reduce contaminated wastewater, the following is proposed : clarification of the calcium chloride solution is carried out in the thickener using a flocculant solution, followed by filtration of the thickened sludge. 2. Способ по п. 1, отличающийся тем, что для осветления раствора хлористого кальция используется сгуститель с применением раствора флокулянта с дозировкой 0,0004-0,001% от веса раствора хлористого кальция.2. The method according to p. 1, characterized in that for clarification of the calcium chloride solution, a thickener is used using a flocculant solution with a dosage of 0.0004-0.001% of the weight of the calcium chloride solution. 3. Способ по п. 1, отличающийся тем, что фильтрация сгущенного шлама осуществляется на пресс-фильтре с подачей сгущенного шлама хлористого кальция и раствора флокулянта 0,0004-0,001% от веса сгущенного шлама хлористого кальция.3. The method according to p. 1, characterized in that the filtration of the thickened sludge is carried out on a press filter with the feed of the thickened slurry of calcium chloride and a flocculant solution 0.0004-0.001% by weight of the thickened slurry of calcium chloride. 4. Способ по п. 1, отличающийся тем, что абгазы производства хлористого кальция направляются на систему газоочистки, состоящую из Скрубберов Вентури и пеногасителя.4. The method according to p. 1, characterized in that the gases produced by calcium chloride are sent to a gas purification system consisting of Venturi scrubbers and antifoam. 5. Способ по п. 1, отличающийся тем, что выход продукта с применением пресс-фильтра увеличивается на 10-25% и соответственно уменьшается на эту величину количество отходов. 5. The method according to p. 1, characterized in that the product yield using a press filter increases by 10-25% and, accordingly, the amount of waste decreases.
RU2014130415/05A 2014-07-24 2014-07-24 Method of producing highly pure calcium chloride solution RU2601332C2 (en)

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RU2014130415/05A RU2601332C2 (en) 2014-07-24 2014-07-24 Method of producing highly pure calcium chloride solution

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Application Number Priority Date Filing Date Title
RU2014130415/05A RU2601332C2 (en) 2014-07-24 2014-07-24 Method of producing highly pure calcium chloride solution

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RU2014130415A true RU2014130415A (en) 2016-02-20
RU2601332C2 RU2601332C2 (en) 2016-11-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112850769A (en) * 2020-12-09 2021-05-28 常熟华虞环境科技有限公司 Closed reaction preparation process of liquid calcium chloride

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2650967C1 (en) * 2017-03-07 2018-04-18 федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный аграрный университет" (ФГБОУ ВО Волгоградский ГАУ) Method for purifying gases and device therefor

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Publication number Priority date Publication date Assignee Title
SU649652A1 (en) * 1977-03-10 1979-02-28 Предприятие П/Я А-3640 Method of purifying chloride solution
SU946619A1 (en) * 1980-01-10 1982-07-30 Предприятие П/Я В-8796 Method of cleaning foundry gases
US5660733A (en) * 1995-04-10 1997-08-26 Deskins; Franklin David Sewage dewatering process
DE102004054433B4 (en) * 2004-11-10 2017-06-01 Gea Messo Gmbh Process for the recovery of calcium chloride from effluents of epichlorohydrin production
RU2291109C2 (en) * 2004-12-21 2007-01-10 Открытое акционерное общество "Каустик" (ОАО "Каустик") Method for preparing calcium chloride
NO328264B1 (en) * 2008-01-30 2010-01-18 Elkem Solar As Process for the preparation of calcium compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112850769A (en) * 2020-12-09 2021-05-28 常熟华虞环境科技有限公司 Closed reaction preparation process of liquid calcium chloride

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