EA025200B1 - Preventing or reducing scale in wet-process phosphoric acid production - Google Patents

Preventing or reducing scale in wet-process phosphoric acid production Download PDF

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EA025200B1
EA025200B1 EA201391360A EA201391360A EA025200B1 EA 025200 B1 EA025200 B1 EA 025200B1 EA 201391360 A EA201391360 A EA 201391360A EA 201391360 A EA201391360 A EA 201391360A EA 025200 B1 EA025200 B1 EA 025200B1
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acid
preceding paragraphs
phosphoric acid
mixture
stage
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EA201391360A
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Russian (ru)
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EA201391360A1 (en
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Сатханджхери Равишанкар
Бин Ван
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Сайтек Текнолоджи Корп.
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00Phosphorus; Compounds thereof
    • C01B25/16Oxyacids of phosphorus; Salts thereof
    • C01B25/18Phosphoric acid
    • C01B25/22Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23FNON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F14/00Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes
    • C23F14/02Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes by chemical means

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Detergent Compositions (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Silicon Compounds (AREA)
  • Fuel Cell (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

Methods for preventing or reducing the formation of scale in a wet-process phosphoric acid production process by intermixing a scale inhibiting reagent at one or more step of the phosphoric acid production process in an amount sufficient to prevent or reduce scale.

Description

(57) Способы предотвращения или снижения образования накипи в экстракционном процессе производства фосфорной кислоты примешиванием реагента, ингибирующего накипь, на одной или более стадиях процесса производства фосфорной кислоты в количестве, достаточном для предотвращения или снижения накипи.(57) Methods for preventing or reducing scale formation in an extraction process for the production of phosphoric acid by admixing a scale inhibiting reagent in one or more stages of a process for the production of phosphoric acid in an amount sufficient to prevent or reduce scale.

025200 Β1025200 Β1

Claims (20)

1. Способ снижения или предотвращения образования накипи в экстракционном процессе производства фосфорной кислоты, включающий подачу по меньшей мере на одной стадии экстракционного процесса производства фосфорной кислоты ингибирующего образование накипи реагента в эффективном количестве, обеспечивающем ингибирование образования накипи, выбранного из группы, включающей:1. A method of reducing or preventing scale formation in an extraction process for the production of phosphoric acid, comprising supplying at least one stage of the extraction process for the production of phosphoric acid, an scale inhibiting reagent in an effective amount, providing inhibition of scale formation selected from the group including: ί) полисахарид, содержащий функциональную группу сульфата, сульфоновой кислоты или карбоновой кислоты;ί) a polysaccharide containing a functional group of sulfate, sulfonic acid or carboxylic acid; ϊϊ) полимер или сополимер, имеющий фазовый переход при нижней критической температуре растворения (НКТР) от 30 до 100°С, где указанный полимер или сополимер выбран из группы, включающей сополимеры этиленгликоля-пропиленгликоля-этиленгликоля; поли-(н-изопропил-акриламид) и сополимеры акриловой кислоты и н-изопропил-акриламида); и их смесей;ϊϊ) a polymer or copolymer having a phase transition at a lower critical dissolution temperature (NCTR) of 30 to 100 ° C, wherein said polymer or copolymer is selected from the group consisting of ethylene glycol-propylene glycol-ethylene glycol copolymers; poly- (n-isopropyl-acrylamide) and copolymers of acrylic acid and n-isopropyl-acrylamide); and mixtures thereof; ίίί) реагент, содержащий смесь органической кислоты, полиамина и сахарной кислоты; ίν) смеси указанных групп соединений (ί)-(ίίί).ίίί) a reagent containing a mixture of an organic acid, polyamine and sugar acid; ίν) mixtures of the indicated groups of compounds (ί) - (ίίί). 2. Способ по п.1, где виды ингибируемой накипи представляют собой одно или более веществ из группы, включающей δί2Ρ6; Ν;·ι28ίΡ6; Κ2δίΡ6; Са§1р6-2Н2О; СаР2; МдР2; Са8О4-2Н2О; Мд§1р6-6Н2О; Μ§0,8Λ1ι,5Ρ6·Χ Н2О, где X является целым числом в интервале от 2 до 10; МдН2Р6О7; Са8О4; А1(РО3)3; ΝιΚΌΌ.; Όι;(Ά1ΙΌ;·4Ι ΙΌ; ΜμΝιΆΌΌΙ ΙΌ и (αΌΌΆΙδιΙΌ· 101 ΙΌ.2. The method according to claim 1, where the types of inhibitible scale are one or more substances from the group including δί 2 Ρ 6 ; Ν; · ι 2 8ίΡ 6 ; Κ 2 δίΡ 6 ; Ca§ 1 p 6 -2H 2 O; CaP 2 ; Mdr 2 ; Ca8O 4 -2H 2 O; Md§1r 6 -6H 2 O; Μ§ 0 , 8 Λ1ι, 5 Ρ 6 · Χ H 2 O, where X is an integer in the range from 2 to 10; MdN 2 P 6 O 7 ; Ca8O 4 ; A1 (PO 3 ) 3 ; ΝιΚΌΌ .; Όι ; (Ά1ΙΌ; 4Ι ΙΌ; ΜμΝιΆΌΌΙ ΙΌ and (αΌΌΆΙδιΙΌ · 101 ΙΌ. 3. Способ по п.1 или 2, где стадии добавления осуществляют на одной или более стадиях экстракционного процесса производства фосфорной кислоты, выбранных из группы, включающей стадию измельчения; стадию варки; стадию фильтрации; стадию конденсации/выпаривания и стадию очистки.3. The method according to claim 1 or 2, where the stage of adding is carried out at one or more stages of the extraction process for the production of phosphoric acid selected from the group including the stage of grinding; cooking stage; stage of filtration; a condensation / evaporation step; and a purification step. 4. Способ по любому из представленных выше пунктов, где стадии добавления осуществляют в любом междоузельном трубопроводе процесса производства фосфорной кислоты.4. The method according to any one of the above paragraphs, where the stage of the addition is carried out in any interstitial pipeline of the phosphoric acid production process. 5. Способ по любому из предыдущих пунктов, где стадию добавления осуществляют на одном этапе, на множестве этапов, последовательно, в обратном порядке, одновременно или в сочетании указанного.5. The method according to any one of the preceding paragraphs, where the step of adding is carried out in one step, in many stages, sequentially, in reverse order, simultaneously or in combination of the specified. 6. Способ по любому из предыдущих пунктов, где реагент, ингибирующий образование накипи, добавляют в виде единственного компонента или в виде отдельных компонентов.6. The method according to any one of the preceding paragraphs, wherein the scale inhibiting reagent is added as a single component or as separate components. 7. Способ по любому из предыдущих пунктов, где полисахарид выбирают из группы, включающей каррагинан; альгиновую кислоту и карбоксиметилцеллюлозу.7. The method according to any one of the preceding paragraphs, where the polysaccharide is selected from the group comprising carrageenan; alginic acid and carboxymethyl cellulose. 8. Способ по п.7, где карбоксиметилцеллюлоза имеет молекулярную массу от 2 до 100 кДа.8. The method according to claim 7, where the carboxymethyl cellulose has a molecular weight of from 2 to 100 kDa. 9. Способ по п.8, где молекулярная масса составляет от 10 до 75 кДа.9. The method of claim 8, where the molecular weight is from 10 to 75 kDa. 10. Способ по п.8 или 9, где молекулярная масса составляет от 10 до 30 кДа.10. The method of claim 8 or 9, where the molecular weight is from 10 to 30 kDa. 11. Способ по любому из предыдущих пунктов, где отношение мономера акриловой кислоты к мономеру н-изопропил-акриламида составляет от 20:80 до 80:20 по массе.11. The method according to any one of the preceding paragraphs, where the ratio of the acrylic acid monomer to the n-isopropyl acrylamide monomer is from 20:80 to 80:20 by weight. 12. Способ по п.11, где отношение мономера акриловой кислоты к мономеру н-изопропилакриламида составляет 50:50 по массе.12. The method according to claim 11, where the ratio of the acrylic acid monomer to the n-isopropyl acrylamide monomer is 50:50 by weight. 13. Способ по любому из предыдущих пунктов, где органической кислотой в смеси реагентов является производное фосфоновой кислоты, выбранное из группы, включающей фенилфосфоновую кислоту; фосфоноуксусную кислоту; гидроксиэтиламино-ди(метиленфосфоновую кислоту) (ГЭМФА); аминотри(метиленфосфоновую кислоту) (АТМФК); 1-гидроксиэтилиден-1,1-дифосфоновую кислоту (ГЭДФК); диэтилентриамин-пента(метиленфосфоновую кислоту) (ДТПМФ); этилендиаминметиленфосфоновую кислоту (ЭДТМФ); гидроксилэтанфосфонотилуксусную кислоту (НПАК) и фосфонобутан-1,2,4-трикарбоновую кислоту (ФБТКК).13. The method according to any one of the preceding paragraphs, where the organic acid in the mixture of reagents is a phosphonic acid derivative selected from the group comprising phenylphosphonic acid; phosphonoacetic acid; hydroxyethylamino di (methylenephosphonic acid) (GEMFA); aminotri (methylenephosphonic acid) (ATMP); 1-hydroxyethylidene-1,1-diphosphonic acid (HEDPA); diethylene triamine penta (methylenephosphonic acid) (DTPMF); ethylene diamine methylene phosphonic acid (EDTMF); hydroxyethanephosphonothylacetic acid (NPAC) and phosphonobutane-1,2,4-tricarboxylic acid (PBTC). 14. Способ по любому из предыдущих пунктов, где полиамином в смеси реагентов является хлорид полидиаллилдиметиламмония или полидиметиламин эпихлоргидрин этилендиамин.14. The method according to any one of the preceding paragraphs, where the polyamine in the mixture of reagents is polydiallyldimethylammonium chloride or polydimethylamine epichlorohydrin ethylenediamine. 15. Способ по любому из предыдущих пунктов, где сахарная кислота в смеси реагентов выбрана из группы, включающей глицериновую кислоту; ксилоновую кислоту; глюконовую кислоту; аскорбиновую кислоту; нейраминовую кислоту; кетодезоксиоктулозоновую кислоту; галактуроновую кислоту; идуроновую кислоту; винную кислоту; слизевую кислоту; сахарную кислоту и их смеси.15. The method according to any one of the preceding paragraphs, where the sugar acid in the mixture of reagents is selected from the group comprising glyceric acid; xylonic acid; gluconic acid; ascorbic acid; neuraminic acid; ketodesoxy octulosonic acid; galacturonic acid; iduronic acid; tartaric acid; mucous acid; sugar acid and mixtures thereof. - 14 025200- 14,025,200 16. Способ по любому из предыдущих пунктов, где смесь реагентов содержит 1-гидроксиэтилиден1,1-дифосфоновую кислоту (ГЭДФК) в качестве органической ксилоты, хлорид полидиаллилдиметиламмония в качестве полиамина и глюконовую кислоту в качестве сахарной кислоты.16. The method according to any one of the preceding paragraphs, where the mixture of reagents contains 1-hydroxyethylidene1,1-diphosphonic acid (HEDPA) as organic xylitol, polydiallyldimethylammonium chloride as polyamine and gluconic acid as sugar acid. 17. Способ по любому из пп.13-16, где отношение компонентов в смеси составляет 1:1:1 по массе.17. The method according to any one of paragraphs.13-16, where the ratio of the components in the mixture is 1: 1: 1 by weight. 18. Способ по любому из представленных выше пунктов, где реагент добавляют в концентрации, составляющей от 10 до 5000 г/т фосфорной кислоты.18. The method according to any one of the above paragraphs, where the reagent is added at a concentration of 10 to 5000 g / t phosphoric acid. 19. Способ по п.18, где реагент добавляют в концентрации, составляющей от 10 до 1000 г/т фосфорной кислоты.19. The method according to p, where the reagent is added at a concentration of 10 to 1000 g / t phosphoric acid. 20. Способ по п.18 или 19, где реагент добавляют в концентрации, составляющей 100 г/т фосфорной кислоты.20. The method according to p. 18 or 19, where the reagent is added at a concentration of 100 g / t of phosphoric acid.
EA201391360A 2011-03-22 2011-03-22 Preventing or reducing scale in wet-process phosphoric acid production EA025200B1 (en)

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PL3105367T3 (en) * 2014-02-11 2021-05-31 Cytec Industries Inc. Primary amine-containing polymers useful as scale inhibitors
WO2016130817A1 (en) 2015-02-11 2016-08-18 Cytec Industries Inc. Modified amines useful as scale inhibitors in wet process phosphoric acid production
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CN111215247B (en) * 2020-01-07 2021-04-23 中南大学 Inhibitor for high-calcium fluorite direct flotation and flotation method
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CA2830875A1 (en) 2012-09-27
WO2012128755A1 (en) 2012-09-27
IL228352A0 (en) 2013-12-31
TN2013000369A1 (en) 2015-01-20
EA201391360A1 (en) 2014-01-30
CN103429528A (en) 2013-12-04
BR112013024257A2 (en) 2016-12-27
MA35044B1 (en) 2014-04-03
AU2011363047A1 (en) 2013-09-26
MX358775B (en) 2018-09-04
EP2688837A1 (en) 2014-01-29
MX2013010468A (en) 2013-10-28
CN103429528B (en) 2016-08-10

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MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

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MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): KZ RU