KR830002906A - Method for producing chromic acid using three-chamber electrolytic cell - Google Patents

Method for producing chromic acid using three-chamber electrolytic cell Download PDF

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Publication number
KR830002906A
KR830002906A KR1019800002114A KR800002114A KR830002906A KR 830002906 A KR830002906 A KR 830002906A KR 1019800002114 A KR1019800002114 A KR 1019800002114A KR 800002114 A KR800002114 A KR 800002114A KR 830002906 A KR830002906 A KR 830002906A
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KR
South Korea
Prior art keywords
chamber
chromic acid
concentrated
chromium
producing
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Application number
KR1019800002114A
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Korean (ko)
Other versions
KR840000994B1 (en
Inventor
슈우스터 니콜라스
다니엘 바빈스키 앤드류
에드워어드 키던 윌리암
Original Assignee
앤 시이 헤릭크
다이아몬드 샴락크 코오포레이션
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Publication of KR830002906A publication Critical patent/KR830002906A/en
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Publication of KR840000994B1 publication Critical patent/KR840000994B1/en

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/14—Alkali metal compounds
    • C25B1/16—Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/22—Inorganic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

내용 없음No content

Description

3실 전해조를 이용한 크롬산 제조방법Method for producing chromic acid using three-chamber electrolytic cell

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

도면은 알카리금속 크롬산염이 공정내 주입되는 크롬산 제조공정의 일실시예의 흐름도이다.The figure is a flowchart of one embodiment of a chromic acid manufacturing process in which an alkali metal chromate is injected in-process.

Claims (1)

높은 전류효율로, 사실상 크롬을 함유하지 않는 농축된 알카리 생성물을 제조하면서 알카리금속 중크롬산염으로부터 진한 크롬산을 제조하는 방법에 있어서;A process for producing concentrated chromic acid from an alkali metal dichromate while producing a concentrated alkali product that is substantially free of chromium with high current efficiency; (1) 중크롬산염 6가 크롬의 약 2%이하로, 환원된 형태의 크롬을 함유하는 알카리금속 중크롬산염을 약 9000g/ℓ이상의 농도로, 중앙실과 양극실을 분리하는 다공성 다이아프램과 중앙실과 음극실을 분리하는 실제 유압적으로 불투과성의 양이온 교환 멤브레인을 가진 3실 전해조의 중앙실에 주입하고;(1) Less than about 2% of dichromate hexavalent chromium, a porous diaphragm separating the central chamber and the anode chamber, and the central chamber and the cathode at a concentration of about 9000 g / l or more of the alkali metal bichromate containing the reduced form of chromium. Inject into a central chamber of a three chamber electrolyzer with actual hydraulically impermeable cation exchange membrane separating the threads; (2)상기 다공성 다이아프램을 통해 상기 양극실로 중앙실의 중크롬산염 함유 전해질이 흐르게하고;(2) allowing a dichromate-containing electrolyte in the central chamber to flow through the porous diaphragm into the anode chamber; (3)상기 음극실에 전해질을 주입하고;(3) injecting electrolyte into the cathode chamber; (4)약 2암페어//in2이상의 밀도의 전해전류를 상기 전해조에 공급하고;(4) supplying an electrolytic current having a density of at least about 2 amps // in 2 to the electrolyzer; (5)약 400g/ℓ이상의 농도의 알카리 생성물을 가지며 약 2ppm이하의 크롬을 함유하는 전해된 음극액 용액을 상기 음극실로부터 회수하고;(5) recovering an electrolytic catholyte solution having an alkali product at a concentration of at least about 400 g / l and containing less than about 2 ppm of chromium from the cathode chamber; (6)약 700g/ℓ이상의 크롬산을 함유하는 양극액 용액을 상기 양극실로부터 회수하는 단계들로 구성되어 있으며; 그리하여, 농축된 양극액 크롬산이 약 90%이상의 전류효율에서 제조됨과 동시에, 농축된 음극액 알카리 생성물이 약 60%이상의 전류효율에서 제조될 수 있는, 3실(室)저해조를 이용한 크롬산 제조방법.(6) recovering the anolyte solution containing more than about 700 g / l of chromic acid from the anode chamber; Thus, a method of producing chromic acid using a three-chamber inhibiting tank in which concentrated anolyte chromic acid is prepared at a current efficiency of about 90% or more, while concentrated catholyte alkaline product can be prepared at a current efficiency of about 60% or more. . ※참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: This is to be disclosed based on the first application.
KR1019800002114A 1979-05-29 1980-05-28 Chromic acid production process using a thrce-compartment cell KR840000994B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US4338279A 1979-05-29 1979-05-29
US43382 1979-05-29
US43,382 1979-05-29

Publications (2)

Publication Number Publication Date
KR830002906A true KR830002906A (en) 1983-05-31
KR840000994B1 KR840000994B1 (en) 1984-07-13

Family

ID=21926901

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019800002114A KR840000994B1 (en) 1979-05-29 1980-05-28 Chromic acid production process using a thrce-compartment cell

Country Status (2)

Country Link
JP (1) JPS565986A (en)
KR (1) KR840000994B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905082A1 (en) * 1989-02-18 1990-08-23 Bayer Ag STABLE ANODES AND THEIR USE IN THE PRODUCTION OF ALKALIDICHROMATES AND CHROME ACID

Also Published As

Publication number Publication date
JPS565986A (en) 1981-01-22
KR840000994B1 (en) 1984-07-13

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