BR112021025867A2 - PROCESS AND SYSTEM FOR THE RECOVERY OF HYDROXYPROPYL METHYCELLULOSE (HPMC) PRODUCTION WINDS - Google Patents

PROCESS AND SYSTEM FOR THE RECOVERY OF HYDROXYPROPYL METHYCELLULOSE (HPMC) PRODUCTION WINDS

Info

Publication number
BR112021025867A2
BR112021025867A2 BR112021025867A BR112021025867A BR112021025867A2 BR 112021025867 A2 BR112021025867 A2 BR 112021025867A2 BR 112021025867 A BR112021025867 A BR 112021025867A BR 112021025867 A BR112021025867 A BR 112021025867A BR 112021025867 A2 BR112021025867 A2 BR 112021025867A2
Authority
BR
Brazil
Prior art keywords
hpmc
production
low temperature
cooling
recovery
Prior art date
Application number
BR112021025867A
Other languages
Portuguese (pt)
Inventor
José Gusmão Dos Santos Alípio
Fernando Almeida Antonio
Original Assignee
Fortal Ind E Comercio S A
Fernando Almeida Antonio
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 Fortal Ind E Comercio S A, Fernando Almeida Antonio filed Critical Fortal Ind E Comercio S A
Publication of BR112021025867A2 publication Critical patent/BR112021025867A2/en

Links

Classifications

    • 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
    • B01D53/14—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 by absorption
    • B01D53/1418—Recovery of products
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1487—Removing organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

PROCESSO E SISTEMA DE RECUPERAÇÃO DE VENTS DA PRODUÇÃO DE HIDROXIPROPIL METILCELULOSE (HPMC). A presente invenção refere-se a um sistema de recuperação de vents da produção industrial de HPMC que compreende um sistema de absorvedoras, com resfriamento a baixa temperatura e remoção dos químicos, sendo que os referidos químicos recuperados são posteriormente tratados para reuso no processo produtivo e um processo de recuperação de vents da produção industrial de HPMC, sendo que o referido processo compreende as etapas de (a) absorver os gases solúveis em água da corrente de vents dos processos de HPMC, com água a baixa temperatura; (b) resfriar a solução aquosa rica nos componentes absorvidos; (c) absorver os gases não absorvidos em álcoois da corrente de vents que passou pela primeira absorvedora, álcool a baixa temperatura; (d) resfriar a solução de álcool rica nos componentes absorvidos; (e) lavar os gases não absorvidos com água a baixa temperatura para remoção do álcool residual; e (f) recuperar os componentes absorvidos para reuso no processo de produção de HPMC.PROCESS AND SYSTEM FOR THE RECOVERY OF WINDS IN THE PRODUCTION OF HYDROXYPROPYL METHYCELLULOSE (HPMC). The present invention refers to a system for recovering vents from the industrial production of HPMC comprising a system of absorbers, with cooling at low temperature and removal of chemicals, and said recovered chemicals are subsequently treated for reuse in the production process and a process for recovering vents from industrial HPMC production, said process comprising the steps of (a) absorbing water-soluble gases from the vent stream of HPMC processes with water at low temperature; (b) cooling the aqueous solution rich in absorbed components; (c) absorb the gases not absorbed in alcohols from the vent stream that passed through the first absorber, alcohol at low temperature; (d) cooling the alcohol solution rich in absorbed components; (e) washing unabsorbed gases with low temperature water to remove residual alcohol; and (f) recover absorbed components for reuse in the HPMC production process.

BR112021025867A 2019-06-19 2020-06-19 PROCESS AND SYSTEM FOR THE RECOVERY OF HYDROXYPROPYL METHYCELLULOSE (HPMC) PRODUCTION WINDS BR112021025867A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102019012797-0A BR102019012797A2 (en) 2019-06-19 2019-06-19 process and system for recovering vents from the production of hydroxypropyl methylcellulose (hpmc)
PCT/BR2020/050220 WO2020252553A1 (en) 2019-06-19 2020-06-19 Process and system for vent recovery from the production of hydroxypropyl methylcellulose (hpmc)

Publications (1)

Publication Number Publication Date
BR112021025867A2 true BR112021025867A2 (en) 2023-03-14

Family

ID=74036827

Family Applications (2)

Application Number Title Priority Date Filing Date
BR102019012797-0A BR102019012797A2 (en) 2019-06-19 2019-06-19 process and system for recovering vents from the production of hydroxypropyl methylcellulose (hpmc)
BR112021025867A BR112021025867A2 (en) 2019-06-19 2020-06-19 PROCESS AND SYSTEM FOR THE RECOVERY OF HYDROXYPROPYL METHYCELLULOSE (HPMC) PRODUCTION WINDS

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BR102019012797-0A BR102019012797A2 (en) 2019-06-19 2019-06-19 process and system for recovering vents from the production of hydroxypropyl methylcellulose (hpmc)

Country Status (3)

Country Link
AR (1) AR119212A1 (en)
BR (2) BR102019012797A2 (en)
WO (1) WO2020252553A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1325459C (en) * 2004-02-04 2007-07-11 上海吴泾化工有限公司 Recovery method of tail gas light component in carbonylation production of acetic acid lanhydride
US20080262216A1 (en) * 2007-04-20 2008-10-23 Shin-Etsu Chemical Co., Ltd. Hydroxyalkyl methylcellulose having solubility and thermoreversible gelation properties improved
EP2303447B1 (en) * 2008-04-29 2014-10-15 Celanese International Corporation Methanol carbonylation system having absorber with multiple solvent options
CN205031917U (en) * 2015-08-31 2016-02-17 扬州中福生物技术有限公司 A DME recovery unit for in HPMC production
CN105085200A (en) * 2015-08-31 2015-11-25 扬州中福生物技术有限公司 DME (dimethyl ether) recovery device in double-rectifying-tower structure form and DME recovery method
CN105037563A (en) * 2015-08-31 2015-11-11 扬州中福生物技术有限公司 HPMC preparation method and device

Also Published As

Publication number Publication date
AR119212A1 (en) 2021-12-01
WO2020252553A1 (en) 2020-12-24
BR102019012797A2 (en) 2020-12-29

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