GB805471A - Improvements relating to the manufacture of ammonium sulphate - Google Patents

Improvements relating to the manufacture of ammonium sulphate

Info

Publication number
GB805471A
GB805471A GB31895/54A GB3189554A GB805471A GB 805471 A GB805471 A GB 805471A GB 31895/54 A GB31895/54 A GB 31895/54A GB 3189554 A GB3189554 A GB 3189554A GB 805471 A GB805471 A GB 805471A
Authority
GB
United Kingdom
Prior art keywords
ammonium sulphate
evaporator
crystals
acid
feed liquor
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
GB31895/54A
Inventor
Thomas Kennaway
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.)
Simon Carves Ltd
Carves Simon Ltd
Original Assignee
Simon Carves Ltd
Carves Simon Ltd
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 Simon Carves Ltd, Carves Simon Ltd filed Critical Simon Carves Ltd
Priority to GB31895/54A priority Critical patent/GB805471A/en
Publication of GB805471A publication Critical patent/GB805471A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/24—Sulfates of ammonium
    • C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0018—Evaporation of components of the mixture to be separated
    • B01D9/0022—Evaporation of components of the mixture to be separated by reducing pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0018—Evaporation of components of the mixture to be separated
    • B01D9/0031—Evaporation of components of the mixture to be separated by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

<PICT:0805471/III/1> In the production of ammonium sulphate, a feed liquor is introduced into and heated in an evaporator, and substantially unsettled magma is withdrawn from the body of the evaporator at a level above the bottom thereof to a settler to separate ammonium sulphate crystals. A feed liquor, nearly saturated with ammonium sulphate and containing free sulphuric acid is introduced through measuring device 1 into evaporator 2 at 3. The evaporator has calandria 4 for heating with central downcomer 5 and vapours are withdrawn at 6 to a vacuum pump which maintains a reduced pressure. The introduction of feed at 3 assists in keeping crystals in suspension. The withdrawal of substantially unsettled magma by pump 7 through standpipe 8 to settling cone 10 permits the removal of acid and ammonium sulphate in the same ratio as that in which they are present in the feed liquor, and the obtainment of a minimum acid concentration in the evaporator. Crystals from cone 10 tass to centrifuge 17. Overflowing mother liquor from 12 may be passed to unit 16, in which it is contacted with ammonia to form ammonium sulphate with free acid, and a proportion may be returned via liquid seal 14.
GB31895/54A 1954-11-04 1954-11-04 Improvements relating to the manufacture of ammonium sulphate Expired GB805471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB31895/54A GB805471A (en) 1954-11-04 1954-11-04 Improvements relating to the manufacture of ammonium sulphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31895/54A GB805471A (en) 1954-11-04 1954-11-04 Improvements relating to the manufacture of ammonium sulphate

Publications (1)

Publication Number Publication Date
GB805471A true GB805471A (en) 1958-12-10

Family

ID=10329998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31895/54A Expired GB805471A (en) 1954-11-04 1954-11-04 Improvements relating to the manufacture of ammonium sulphate

Country Status (1)

Country Link
GB (1) GB805471A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112295256A (en) * 2020-09-23 2021-02-02 河北金坦化工装备有限公司 Heat pump type temperature rising crystallization process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112295256A (en) * 2020-09-23 2021-02-02 河北金坦化工装备有限公司 Heat pump type temperature rising crystallization process

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