GB978272A - Improvements in or relating to a continuous process for removing cyanogen compounds froma furnace gas containing them - Google Patents

Improvements in or relating to a continuous process for removing cyanogen compounds froma furnace gas containing them

Info

Publication number
GB978272A
GB978272A GB1265561A GB1265561A GB978272A GB 978272 A GB978272 A GB 978272A GB 1265561 A GB1265561 A GB 1265561A GB 1265561 A GB1265561 A GB 1265561A GB 978272 A GB978272 A GB 978272A
Authority
GB
United Kingdom
Prior art keywords
water
circulating
furnace
gas containing
circulating water
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
GB1265561A
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.)
Rheinstahl Huettenwerke AG
Original Assignee
Rheinstahl Huettenwerke AG
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 Rheinstahl Huettenwerke AG filed Critical Rheinstahl Huettenwerke AG
Publication of GB978272A publication Critical patent/GB978272A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
    • C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/002—Evacuating and treating of exhaust gases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Treatment Of Sludge (AREA)

Abstract

A continuous process for removing cyanogen compounds from a furnace gas containing them comprises cooling the gas by direct contact with a circulating water system until the circulating water has dissolved a sufficient quantity of the said cyanogen compound to provide a concentration of HCN in the water of 300-500 mg./litre and then branching off from the circulating water system a minor proportion of the said circulating water and decyanizing same, the water removed being replaced by a corresponding amount of fresh water. The water may be decyanized by heating to below its boiling point, e.g. 50-60 DEG C., and treating with a gas containing carbon dioxide. This water may be returned to the circulating system. The hydrogen cyanide may either be recovered or burnt in the furnace. The water to be decyanized may be mixed with HCN containing water derived from the filter dust and sludge, and the solids may be briquetted and returned to the furnace.ALSO:A continuous process for removing cyanogen compounds from a furnace gas containing them comprises cooling the gas by direct contact with a circulating water system until the circulating water has dissolved a sufficient quantity of the said cyanogen compound to provide a concentration of HCN in the water of 300-500 mg./litre and then branching off from the circulating water system a minor proportion of the said circulating water and decyanizing same, the water removed being replaced by a corresponding amount of fresh water. The water may be decyanized by heating to below its boiling point, e.g. 50-60 DEG C., and treating with a gas containing carbon dioxide. This water may be returned to the circulating system. The hydrogen cyanide may either be recovered or burnt in the furnace. The water to be decyanized may be mixed with HCN-containing water derived from the filter dust and sludge, and the solids may be briquetted and returned to the furnace.
GB1265561A 1960-04-22 1961-04-07 Improvements in or relating to a continuous process for removing cyanogen compounds froma furnace gas containing them Expired GB978272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0027805 1960-04-22

Publications (1)

Publication Number Publication Date
GB978272A true GB978272A (en) 1964-12-23

Family

ID=7402555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1265561A Expired GB978272A (en) 1960-04-22 1961-04-07 Improvements in or relating to a continuous process for removing cyanogen compounds froma furnace gas containing them

Country Status (2)

Country Link
GB (1) GB978272A (en)
LU (1) LU39849A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI62040C (en) * 1979-02-06 1982-11-10 Outokumpu Oy PROCEDURE FOR THE FIELD OF THE METALLURGICAL INDUSTRY

Also Published As

Publication number Publication date
LU39849A1 (en) 1961-05-02

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