GB676736A - Method of purifying waste gases from viscose plants - Google Patents

Method of purifying waste gases from viscose plants

Info

Publication number
GB676736A
GB676736A GB25192/50A GB2519250A GB676736A GB 676736 A GB676736 A GB 676736A GB 25192/50 A GB25192/50 A GB 25192/50A GB 2519250 A GB2519250 A GB 2519250A GB 676736 A GB676736 A GB 676736A
Authority
GB
United Kingdom
Prior art keywords
gases
sulphur
waste
mols
waste gases
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
GB25192/50A
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.)
Phrix Werke AG
Original Assignee
Phrix Werke 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 Phrix Werke AG filed Critical Phrix Werke AG
Publication of GB676736A publication Critical patent/GB676736A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • 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
    • B01D53/48—Sulfur compounds
    • 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
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • B01D53/523—Mixtures of hydrogen sulfide and sulfur oxides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
    • D01F13/02—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of cellulose, cellulose derivatives or proteins
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Abstract

Waste air from viscose plants containing less than 0.1 per cent hydrogen sulphide is purified by bringing the gases continuously into contact with ferric hydroxide, e.g. bog iron ore, and continuously passing off substantially non-poisonous non-malodorous gas. The waste gases may be blown with steam to ensure the presence of at least 6 mols. of water to every 4 mols, ferric hydroxide. The waste gases at a linear velocity of at least 1.5 cms/sec. are passed through at least two known absorption towers in series until the contact mass in the first tower contains 55 per cent sulphur. The sulphur is extracted by carbon disulphide and the towers are then reversed so that the gases alway pass first through a tower which has absorbed some sulphur. The absorption is preferably carried out in alkaline medium e.g. by addition of ammonia to the gases or solid or dissolved caustic lime or sodium hydroxide to the contact mass. The gases may be further treated with a finely dispersed absorbent such as activated carbon or silica gel, or with ozone.
GB25192/50A 1952-06-13 1950-10-16 Method of purifying waste gases from viscose plants Expired GB676736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP7825A DE1029347B (en) 1952-06-13 1952-06-13 Process for cleaning the exhaust air from viscose factories

Publications (1)

Publication Number Publication Date
GB676736A true GB676736A (en) 1952-07-30

Family

ID=7361391

Family Applications (2)

Application Number Title Priority Date Filing Date
GB25192/50A Expired GB676736A (en) 1952-06-13 1950-10-16 Method of purifying waste gases from viscose plants
GB15062/53A Expired GB725749A (en) 1952-06-13 1953-05-29 Method of purifying waste gases from viscose plants

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB15062/53A Expired GB725749A (en) 1952-06-13 1953-05-29 Method of purifying waste gases from viscose plants

Country Status (6)

Country Link
BE (3) BE498368A (en)
CH (2) CH287173A (en)
DE (3) DE971181C (en)
FR (2) FR1026816A (en)
GB (2) GB676736A (en)
NL (1) NL73615C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052055B (en) * 1955-03-24 1959-03-05 Spinnfaser Ag Process for the recovery of sulfur and carbon disulfide from the H2S- and CS2-containing exhaust air from viscose processing plants

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059378B (en) * 1956-10-26 1959-06-18 Siemens Ag Rotary bit with hard metal inserts in the blades
DE2152127C3 (en) * 1971-10-20 1982-05-06 Meißner, Joachim, 2000 Hamburg Rock drill
FR2558891B1 (en) * 1984-02-01 1986-11-07 Charbonnages De France ROTARY DRILLING SIZE ASSISTED BY HIGH PRESSURE JETS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262979C (en) *
GB519856A (en) * 1938-10-04 1940-04-08 Courtaulds Ltd Improvements in and relating to the controlled movement of liquids
FR856308A (en) * 1939-02-24 1940-06-11 Carbonisation Charbons Actifs Improvements in viscose manufacturing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052055B (en) * 1955-03-24 1959-03-05 Spinnfaser Ag Process for the recovery of sulfur and carbon disulfide from the H2S- and CS2-containing exhaust air from viscose processing plants
US2899267A (en) * 1955-03-24 1959-08-11 Process for purifying air

Also Published As

Publication number Publication date
BE519903A (en) 1955-05-27
FR1026816A (en) 1953-05-05
FR64969E (en) 1955-12-15
NL73615C (en) 1953-11-16
BE519905A (en) 1955-05-27
DE971181C (en) 1958-12-24
DE971061C (en) 1958-12-04
CH287173A (en) 1952-11-30
DE1029347B (en) 1958-05-08
CH316324A (en) 1956-09-30
GB725749A (en) 1955-03-09
BE498368A (en) 1951-01-15

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