IT1254524B - PROCEDURE FOR THE ABSORPTION OF H2S, NH3 AND HCN FROM THE COAL REFINING GAS - Google Patents

PROCEDURE FOR THE ABSORPTION OF H2S, NH3 AND HCN FROM THE COAL REFINING GAS

Info

Publication number
IT1254524B
IT1254524B ITMI920618A ITMI920618A IT1254524B IT 1254524 B IT1254524 B IT 1254524B IT MI920618 A ITMI920618 A IT MI920618A IT MI920618 A ITMI920618 A IT MI920618A IT 1254524 B IT1254524 B IT 1254524B
Authority
IT
Italy
Prior art keywords
absorption
absorber
ammonia
hcn
solution
Prior art date
Application number
ITMI920618A
Other languages
Italian (it)
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 filed Critical
Publication of ITMI920618A0 publication Critical patent/ITMI920618A0/en
Publication of ITMI920618A1 publication Critical patent/ITMI920618A1/en
Application granted granted Critical
Publication of IT1254524B publication Critical patent/IT1254524B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1418—Recovery of products
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • 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
    • C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
    • 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
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Water Supply & Treatment (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invenzione riguarda un procedimento per l'assorbimento di H2S, NH3 e HCN dal gas della raffinazione del carbone, per esempio gas di cokeria, nel lavaggio in circuito ammoniaca/solfuro di idrogeno mediante una soluzione acquosa ammoniacale e acqua esente da ammoniaca fino a gradi finali di purezza scarsi, preferenzialmente minori di 0,2 g H2S/Nm3.Conformemente a ciò, la soluzione di assorbimento carica che defluisce dall'assorbitore dello H2S viene elaborata in uno stadio su membrana secondo il principio dell'osmosi inversa, dove un permeato con bassa concentrazione di H2S viene riciclato direttamente come soluzione acquosa di NH3 all'assorbitore dello H2S e un concentrato con una concentrazione più elevata di H2S, dopo la separazione dell'NH3 e dell'H2S assorbiti in un sistema di rigenerazione termico, viene nuovamente riciclato parzialmente all'assorbitore dello H2S come soluzione acquosa di NH3 povera di H2S.The invention relates to a process for the absorption of H2S, NH3 and HCN from the coal refining gas, for example coke oven gas, in the ammonia / hydrogen sulfide circuit washing by means of an ammonia aqueous solution and ammonia-free water up to Final degrees of purity scarce, preferably lower than 0.2 g H2S / Nm3. In accordance with this, the charge absorption solution that flows from the H2S absorber is processed in a membrane stage according to the principle of reverse osmosis, where a permeated with a low concentration of H2S is recycled directly as an aqueous solution of NH3 to the H2S absorber and a concentrate with a higher concentration of H2S, after the separation of the NH3 and H2S absorbed in a thermal regeneration system, is again partially recycled to the H2S absorber as an aqueous NH3 solution low in H2S.

ITMI920618A 1991-03-21 1992-03-17 PROCEDURE FOR THE ABSORPTION OF H2S, NH3 AND HCN FROM THE COAL REFINING GAS IT1254524B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4109267A DE4109267C1 (en) 1991-03-21 1991-03-21 Hydrogen sulphide, ammonia and hydrogen cyanide absorption from process gas - by using circulating wash contg. aq. ammonium soln. and clean water and working up loaded absorption soln. obtd. from hydrogen sulphide absorber by reverse osmosis

Publications (3)

Publication Number Publication Date
ITMI920618A0 ITMI920618A0 (en) 1992-03-17
ITMI920618A1 ITMI920618A1 (en) 1993-09-17
IT1254524B true IT1254524B (en) 1995-09-25

Family

ID=6427874

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI920618A IT1254524B (en) 1991-03-21 1992-03-17 PROCEDURE FOR THE ABSORPTION OF H2S, NH3 AND HCN FROM THE COAL REFINING GAS

Country Status (3)

Country Link
DE (1) DE4109267C1 (en)
FR (1) FR2674252B1 (en)
IT (1) IT1254524B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404802B (en) * 1997-09-01 1999-03-25 Voest Alpine Ind Anlagen Process for gas purification
US8007570B2 (en) 2009-03-11 2011-08-30 General Electric Company Systems, methods, and apparatus for capturing CO2 using a solvent
EP2433700A1 (en) * 2010-09-23 2012-03-28 Alstom Technology Ltd Trace component removal in CO2 removal processes by means of a semipermeable membrane
CN109205941B (en) * 2018-10-09 2021-11-02 浙江奇彩环境科技股份有限公司 Resourceful treatment method for high-salt high-ammonia nitrogen wastewater

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513393A (en) * 1974-06-29 1976-01-12 Nippon Kokan Kk Ryukasuisoo jokyosuru hoho
US4444571A (en) * 1983-03-07 1984-04-24 Bend Research, Inc. Energy-efficient process for the stripping of gases from liquids
CA1248462A (en) * 1983-06-22 1989-01-10 Virgil L. Brundige, Jr. Method and arrangement for the selective removal of acid gases from a feed gas
DE3631251C2 (en) * 1986-09-13 1995-05-24 Thyssen Still Otto Gmbh Process for washing out hydrogen sulfide and ammonia from gases

Also Published As

Publication number Publication date
DE4109267C1 (en) 1992-10-08
ITMI920618A0 (en) 1992-03-17
FR2674252A1 (en) 1992-09-25
FR2674252B1 (en) 1994-03-18
ITMI920618A1 (en) 1993-09-17

Similar Documents

Publication Publication Date Title
CN110732227B (en) Method and device for treating acid gas
WO2018048032A1 (en) Method for purifying coke oven gas and apparatus for purifying coke oven gas
CN103011201B (en) Method for extracting ammonium thiocyanate from ammonia-process desulfurization waste liquid by oxidation process
BR9809965A (en) Lactic acid purification process
US4009243A (en) Continuous process for scrubbing out hydrogen sulfide and ammonia from coke oven gas
CN103318846B (en) Method for obtaining sulfur from sulfur compounds in coal chemical plant and electric power plant
PT1109614E (en) PROCESS FOR CONTROLLING AMMONIA SPILL IN THE REDUCTION OF SULFUR DIOXIDE EMISSION
US4038366A (en) Method for removing hydrogen sulfide
AU692912B2 (en) Continuous procedure for the simultaneous collection and precipitation of mercury in gases containing it
IT1254524B (en) PROCEDURE FOR THE ABSORPTION OF H2S, NH3 AND HCN FROM THE COAL REFINING GAS
PE20010144A1 (en) SYSTEM AND METHOD FOR SUGAR REFINING
KR20090123948A (en) Method for producing sulphuric acid and installation for carrying out said method
CN114684794B (en) Claus tail gas treatment system and treatment method
CN203359987U (en) Device for acquiring sulfur from sulfur compounds of coal chemical industry and power plant
ITMI951579A1 (en) PROCESS FOR THE TREATMENT OF TAIL GAS OF A CLAUS PLANT AND THE CONTEMPORARY ENRICHMENT OF THE SUPPLY GAS
CN105130097A (en) Treatment method of vacuum potassium carbonate method coke oven gas desulfurization waste liquid
CN105524664A (en) Desulfurization purification system of coke oven gas
DK0840710T3 (en) Apparatus for continuous preparation of precipitated calcium carbonate
CN219839665U (en) Resource utilization system for ammonia in low-temperature methanol washing acid process gas
CN1012357B (en) Method for recovery of cyanide
US11530131B1 (en) Methods and systems of sub-dew point sulfur recovery with interstage membrane units
CN220467589U (en) Device for preparing superior ammonia water from crude ammonia gas
SU822861A1 (en) Method of cleaning gas from hydrogen sulfide in the presence of carbon dioxide
RU2197319C2 (en) Plant for cleaning gases from acid components
CN1137760C (en) Pre-treating process for regenerating sodium hydroxide as desulfurizing agent by electrolysis