GB1421876A - Process for the continuous detoxification of cyanides - Google Patents

Process for the continuous detoxification of cyanides

Info

Publication number
GB1421876A
GB1421876A GB1882974A GB1882974A GB1421876A GB 1421876 A GB1421876 A GB 1421876A GB 1882974 A GB1882974 A GB 1882974A GB 1882974 A GB1882974 A GB 1882974A GB 1421876 A GB1421876 A GB 1421876A
Authority
GB
United Kingdom
Prior art keywords
cyanides
detoxification
cyanide
temperature shock
continuous detoxification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1882974A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jenapharm GmbH and Co KG
Original Assignee
Jenapharm GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jenapharm GmbH and Co KG filed Critical Jenapharm GmbH and Co KG
Publication of GB1421876A publication Critical patent/GB1421876A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/35—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by hydrolysis
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20—Organic substances
    • A62D2101/26—Organic substances containing nitrogen or phosphorus
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40—Inorganic substances
    • A62D2101/45—Inorganic substances containing nitrogen or phosphorus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/18—Cyanides

Landscapes

  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1421876 Detoxification of cyanides JENAPHARM VEB 30 April 1974 [10 May 1973] 18829/74 Heading C1C A process for the detoxification of cyanides or cyanide-containing solutions is described wherein the solution is pre-heated by heat exchange, fed to a tubular reactor with a laminar pressure flow, and the hydrolysis of the cyanide initiated by a temperature shock at 200-250‹ C., 40- 150 atm. The temperature shock may be produced by heat of reaction (e.g. by adding cone. sulphuric acid) or very sudden heating. A device for carrying out the process is also described.
GB1882974A 1973-05-10 1974-04-30 Process for the continuous detoxification of cyanides Expired GB1421876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD17084473A DD109365A1 (en) 1973-05-10 1973-05-10

Publications (1)

Publication Number Publication Date
GB1421876A true GB1421876A (en) 1976-01-21

Family

ID=5491238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1882974A Expired GB1421876A (en) 1973-05-10 1974-04-30 Process for the continuous detoxification of cyanides

Country Status (18)

Country Link
JP (2) JPS503080A (en)
AT (1) AT330685B (en)
AU (1) AU459406B2 (en)
BE (1) BE835634A (en)
BR (1) BR7403801D0 (en)
CA (1) CA1005584A (en)
CH (1) CH596102A5 (en)
CS (1) CS173245B1 (en)
DD (1) DD109365A1 (en)
DE (1) DE2350545B2 (en)
ES (1) ES442687A3 (en)
FR (1) FR2228723B1 (en)
GB (1) GB1421876A (en)
IT (1) IT1015938B (en)
NL (1) NL178678C (en)
RO (1) RO67825A (en)
SU (1) SU791607A1 (en)
YU (1) YU308380A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222557Y2 (en) * 1974-07-25 1977-05-24
AT341238B (en) * 1975-06-27 1978-01-25 Vmw Ranshofen Berndorf Ag METHOD OF THERMAL CYANIDE DEGRADATION OF USED CATHODE LINES OF ALUMINUM ELECTROLYSIS CELLS
DE2553840C3 (en) * 1975-11-29 1981-01-29 Bayer Ag, 5090 Leverkusen Pressure hydrolytic treatment of waste water
JPS5321700A (en) * 1976-08-09 1978-02-28 Yoshio Shinkawa Locking device
JP3746300B2 (en) 1997-08-11 2006-02-15 株式会社荏原製作所 Hydrothermal electrolysis method and apparatus
JP6856335B2 (en) 2016-09-06 2021-04-07 株式会社ディスコ Processing equipment

Also Published As

Publication number Publication date
AU6270673A (en) 1975-03-27
DE2350545A1 (en) 1974-12-05
AT330685B (en) 1976-07-12
NL178678B (en) 1985-12-02
SU791607A1 (en) 1980-12-30
BR7403801D0 (en) 1974-12-03
FR2228723A1 (en) 1974-12-06
CS173245B1 (en) 1977-02-28
IT1015938B (en) 1977-05-20
DD109365A1 (en) 1974-11-05
DE2350545B2 (en) 1977-05-12
NL7406254A (en) 1974-11-12
YU308380A (en) 1983-02-28
FR2228723B1 (en) 1976-06-25
CH596102A5 (en) 1978-02-28
JPS5916513B2 (en) 1984-04-16
NL178678C (en) 1986-05-01
ATA371074A (en) 1975-09-15
JPS503080A (en) 1975-01-13
RO67825A (en) 1980-10-30
CA1005584A (en) 1977-02-15
ES442687A3 (en) 1977-08-16
JPS5763191A (en) 1982-04-16
AU459406B2 (en) 1975-03-27
BE835634A (en) 1976-03-16

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930430