BRPI0510525A - phosphoric acid production process - Google Patents

phosphoric acid production process

Info

Publication number
BRPI0510525A
BRPI0510525A BRPI0510525-0A BRPI0510525A BRPI0510525A BR PI0510525 A BRPI0510525 A BR PI0510525A BR PI0510525 A BRPI0510525 A BR PI0510525A BR PI0510525 A BRPI0510525 A BR PI0510525A
Authority
BR
Brazil
Prior art keywords
phosphoric acid
production process
acid production
calcium sulfate
forming
Prior art date
Application number
BRPI0510525-0A
Other languages
Portuguese (pt)
Inventor
Serge Kurowski
Original Assignee
Prayon Technologies
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 Prayon Technologies filed Critical Prayon Technologies
Publication of BRPI0510525A publication Critical patent/BRPI0510525A/en

Links

Classifications

    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/225—Dihydrate process
    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/226—Hemihydrate process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Luminescent Compositions (AREA)
  • Fertilizers (AREA)
  • Paper (AREA)

Abstract

PROCESSO DE PRODUçãO DE áCIDO FOSFóRICO. A presente invenção refere-se a um processo de produção de ácido fosfórico, compreendendo uma formação de um primeiro mingau aquoso, contendo sulfato de cálcio dihidratado e ácido fosfórico, uma formação de um segundo mingau aquoso, contendo sulfato de cálcio hemi-hidratado e ácido fosfórico e uma filtragem de uma mistura desses dois mingaus através de um filtro com formação de um bolo de filtragem contendo simultaneamente sulfato de cálcio dihidratado e hemi-hidratado e separação de uma fase aquosa contendo ácido fosfórico.Phosphoric Acid Production Process. The present invention relates to a phosphoric acid production process comprising forming a first aqueous porridge containing calcium sulfate dihydrate and phosphoric acid, forming a second aqueous porridge containing calcium sulfate hemihydrate and acid Phosphoric acid and a filtration of a mixture of these two porridges through a filter cake forming filter simultaneously containing calcium sulfate dihydrate and hemihydrate and separation of an aqueous phase containing phosphoric acid.

BRPI0510525-0A 2004-06-01 2005-06-01 phosphoric acid production process BRPI0510525A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2004/0273A BE1016065A3 (en) 2004-06-01 2004-06-01 Process phosphoric acid production.
PCT/EP2005/052495 WO2005118470A1 (en) 2004-06-01 2005-06-01 Method for producing phosphoric acid

Publications (1)

Publication Number Publication Date
BRPI0510525A true BRPI0510525A (en) 2007-10-30

Family

ID=34973657

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0510525-0A BRPI0510525A (en) 2004-06-01 2005-06-01 phosphoric acid production process

Country Status (8)

Country Link
EP (1) EP1771378A1 (en)
CN (1) CN1960941B (en)
BE (1) BE1016065A3 (en)
BR (1) BRPI0510525A (en)
EA (1) EA010973B1 (en)
MA (1) MA28704B1 (en)
TN (1) TNSN06394A1 (en)
WO (1) WO2005118470A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1019055A3 (en) 2009-12-02 2012-02-07 Prayon Technologies PROCESS FOR PRODUCING PHOSPHORIC ACID
BR112013030374B1 (en) 2011-06-01 2019-12-31 Prayon Tech method for the production of phosphoric acid
RU2599525C1 (en) * 2015-04-23 2016-10-10 Открытое акционерное общество "Научно-исследовательский институт по удобрениям и инсектофунгицидам имени профессора Я.В. Самойлова" (ОАО "НИУИФ") Method of producing wet-process phosphoric acid
PL3665124T3 (en) 2017-08-11 2022-01-31 Prayon S.A. Method for etching a phosphate source using acid
CN107840317B (en) * 2017-10-30 2019-12-03 安徽六国化工股份有限公司 A kind of-half water wet method phosphoric acid manufacture process of two water of one-step method
CN107840316B (en) * 2017-10-30 2019-07-19 安徽六国化工股份有限公司 A kind of two step method dihydrate wet phosphoric acid production technology

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20994E (en) 1928-06-05 1939-01-31 Method of treating raw phosphate
NL29556C (en) 1930-02-13
NL137436C (en) * 1960-10-26
NL293253A (en) * 1962-06-29
IL23004A (en) 1964-02-27 1969-03-27 Fosindus Co Process for the purification of residual gypsum produced in the manufacture of phosphoric acid by the reaction of sulphuric acid with natural phosphates
LU49007A1 (en) * 1965-07-07 1967-01-09
US3632304A (en) * 1968-09-03 1972-01-04 Universal Oil Prod Co Catalytic oxidation of waste gas streams with fluidizable subdivided particles
US3632307A (en) * 1969-04-09 1972-01-04 Albatros Super Fosfaatfabrieke Process for the preparation of phosphoric acid and gypsum from phosphate rock
US3715191A (en) * 1970-07-13 1973-02-06 Whiting Corp Apparatus for making wet process phosphoric acid
US3911079A (en) * 1971-03-23 1975-10-07 Rhone Progil Method of producing phosphoric acid and calcium sulphate
US4220630A (en) * 1978-01-04 1980-09-02 Occidental Petroleum Corporation Hemihydrate type process for phosphoric acid manufacture using additive to improve filterability
DE2967184D1 (en) * 1979-10-17 1984-09-20 Siape Device for the production of phosphoric acid by the wet process
EP0181029B1 (en) 1984-11-05 1991-06-12 Prayon Développement Société anonyme Continuous process for the preparation of phosphoric acid and of calcium sulphate
US5084261A (en) * 1989-06-22 1992-01-28 Occidental Chemical Corporation Recovery and utilization of gypstack leachate in hemihydrate phosphoric acid process

Also Published As

Publication number Publication date
TNSN06394A1 (en) 2008-02-22
EA010973B1 (en) 2008-12-30
CN1960941B (en) 2010-09-08
EP1771378A1 (en) 2007-04-11
BE1016065A3 (en) 2006-02-07
CN1960941A (en) 2007-05-09
WO2005118470A1 (en) 2005-12-15
EA200602217A1 (en) 2007-04-27
MA28704B1 (en) 2007-06-01

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Legal Events

Date Code Title Description
B08F Application fees: dismissal - article 86 of industrial property law

Free format text: REFERENTE A 10A ANUIDADE.

B08K Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87)

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2310 DE 14-04-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.