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FR2376071A1 - PROCESS FOR CONCENTRATION OF DILUTED PHOSPHORIC ACID - Google Patents

PROCESS FOR CONCENTRATION OF DILUTED PHOSPHORIC ACID

Info

Publication number
FR2376071A1
FR2376071A1 FR7738599A FR7738599A FR2376071A1 FR 2376071 A1 FR2376071 A1 FR 2376071A1 FR 7738599 A FR7738599 A FR 7738599A FR 7738599 A FR7738599 A FR 7738599A FR 2376071 A1 FR2376071 A1 FR 2376071A1
Authority
FR
France
Prior art keywords
phosphoric acid
concentration
heat
acid
plant
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.)
Withdrawn
Application number
FR7738599A
Other languages
French (fr)
Inventor
Walter Blumrich
Karl-Heinz Dorr
Hugo Grimm
Ulrich Sander
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.)
GEA Group AG
Original Assignee
Metallgesellschaft 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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of FR2376071A1 publication Critical patent/FR2376071A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/08—Compounds containing halogen
    • C01B33/10—Compounds containing silicon, fluorine, and other elements
    • C01B33/103—Fluosilicic acid; Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/765—Multi-stage SO3-conversion
    • C01B17/7655—Multi-stage SO3-conversion with intermediate absorption
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration
    • C01B25/2343—Concentration concomitant with purification, e.g. elimination of fluorine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Saccharide Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Procédé de concentration d'acide phosphorique dilué dans lequel cet acide est chauffé par échange thermique indirect à une température inférieure à son point d'ébullition et est ensuite pulvérisé en contact direct avec des gaz chauds. Afin d'éviter la nécessité de mise en oeuvre d'énergie primaire ou de vapeur pour réaliser la concentration, on combine ce procédé avec la fabrication d'acide sulfurique par le procédé de contact dont on retire de la chaleur par échange thermique, ladite chaleur étant transférée aux fluides de l'installation de concentration d'acide phosphorique. Le procédé peut s'appliquer au départ de gaz contenant du SO2 produits par combustion de soufre ou provenant d'une installation de grillage ou d'une usine pyrométallurgique.A method of concentrating dilute phosphoric acid in which this acid is heated by indirect heat exchange to a temperature below its boiling point and is then sprayed into direct contact with hot gases. In order to avoid the need to use primary energy or steam to carry out the concentration, this process is combined with the manufacture of sulfuric acid by the contact process from which heat is removed by thermal exchange, said heat being transferred to the fluids of the phosphoric acid concentration plant. The process can be applied starting from gases containing SO2 produced by combustion of sulfur or coming from a roasting installation or a pyrometallurgical plant.

FR7738599A 1977-01-03 1977-12-21 PROCESS FOR CONCENTRATION OF DILUTED PHOSPHORIC ACID Withdrawn FR2376071A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2700009A DE2700009C3 (en) 1977-01-03 1977-01-03 Process for the concentration of dilute phosphoric acid

Publications (1)

Publication Number Publication Date
FR2376071A1 true FR2376071A1 (en) 1978-07-28

Family

ID=5998041

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738599A Withdrawn FR2376071A1 (en) 1977-01-03 1977-12-21 PROCESS FOR CONCENTRATION OF DILUTED PHOSPHORIC ACID

Country Status (15)

Country Link
JP (1) JPS5385797A (en)
AU (1) AU513920B2 (en)
BE (1) BE862580A (en)
BR (1) BR7800006A (en)
CA (1) CA1085583A (en)
DE (1) DE2700009C3 (en)
ES (1) ES465669A1 (en)
FI (1) FI773907A (en)
FR (1) FR2376071A1 (en)
GB (1) GB1589945A (en)
IT (1) IT1090383B (en)
NO (1) NO774454L (en)
PL (1) PL203780A1 (en)
SE (1) SE7800045L (en)
ZA (1) ZA777069B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2824010A1 (en) * 1978-06-01 1979-12-13 Metallgesellschaft Ag METHOD FOR CONCENTRATING DILUSED PHOSPHORIC ACID
CA1146722A (en) * 1981-04-10 1983-05-24 Gordon M. Cameron Energy recovery method and system for combined sulphuric and phosphoric acid manufacturing plant
DE3232446A1 (en) * 1982-08-12 1984-02-16 Metallgesellschaft Ag, 6000 Frankfurt METHOD FOR PRODUCING SULFURIC ACID
US4576813A (en) * 1983-07-05 1986-03-18 Monsanto Company Heat recovery from concentrated sulfuric acid
US4670242A (en) * 1984-11-09 1987-06-02 Monsanto Company Heat recovery from concentrated sulfuric acid
CN103523763B (en) * 2013-10-11 2017-04-05 徐州天正活性炭厂 A kind of energy saver and method of rapid concentration of dilute phosphoric acid
CN104445118B (en) * 2014-12-01 2016-08-31 四川玖长科技有限公司 Technique for phosphoric acid processed from the kiln discharge flue gas of kiln-process phosphoric acid technique
CN109941979A (en) * 2019-04-30 2019-06-28 舒爱桦 A kind of technique of concentrated fertilizer phosphoric acid food grade phosphoric acid

Also Published As

Publication number Publication date
DE2700009C3 (en) 1979-11-15
AU3150177A (en) 1979-06-21
CA1085583A (en) 1980-09-16
GB1589945A (en) 1981-05-20
JPS5385797A (en) 1978-07-28
ZA777069B (en) 1978-09-27
BE862580A (en) 1978-06-30
IT1090383B (en) 1985-06-26
SE7800045L (en) 1978-07-04
PL203780A1 (en) 1978-08-14
FI773907A (en) 1978-07-04
NO774454L (en) 1978-07-04
AU513920B2 (en) 1981-01-15
BR7800006A (en) 1978-08-15
DE2700009A1 (en) 1978-07-06
DE2700009B2 (en) 1979-03-29
ES465669A1 (en) 1978-09-16

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Legal Events

Date Code Title Description
RE Withdrawal of published application