SU1437363A1 - Method of purifying acetic acid in its regeneration in production of cellulose acetates and acetic anhydride - Google Patents
Method of purifying acetic acid in its regeneration in production of cellulose acetates and acetic anhydride Download PDFInfo
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- SU1437363A1 SU1437363A1 SU864157274A SU4157274A SU1437363A1 SU 1437363 A1 SU1437363 A1 SU 1437363A1 SU 864157274 A SU864157274 A SU 864157274A SU 4157274 A SU4157274 A SU 4157274A SU 1437363 A1 SU1437363 A1 SU 1437363A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- regeneration
- production
- acid
- acetic anhydride
- acetic acid
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Abstract
Изобретение относитс к насьпцен- ным карбоновым кислотам, в частности к очистке уксусной кислоты в процессе регенерировани ее в производстве ацетатов целлюлозы и уксусного ангидрида Цель - снижение расхода пе- роксида водорода. Очистку ведут путем обработки пероксидом водорода в присутствии добавки полифосфорной кислоты или ее соли при массовом соотношении , равном 1:(О,023-0,22). Процесс ведут в режиме кипени и предпочтительно в присутствии добавки уксусно- го ангидрида. Расход окислител снижаетс в 3 раза (с 0,66 до 0,2;2 мл на 150 г очищаемой кислоты). 1 з,п, ф-лы, 1 табл.The invention relates to applied carboxylic acids, in particular, to the purification of acetic acid during its regeneration in the production of cellulose acetate and acetic anhydride. The goal is to reduce the consumption of hydrogen peroxide. Cleaning lead by treatment with hydrogen peroxide in the presence of additives polyphosphoric acid or its salt with a mass ratio equal to 1: (O, 023-0.22). The process is carried out in a boiling mode and preferably in the presence of an additive of acetic anhydride. The oxidizer consumption is reduced 3 times (from 0.66 to 0.2; 2 ml per 150 g of the acid to be purified). 1 s, n, f-ly, 1 tab.
Description
щества 99-, 2%., OKHCJ V ::. 0,022 г 5кз/л,, пеоканг i: -:99%, 2%., OKHCJ V ::. 0.022 g 5kz / l ,, peokang i: -:
1с) с лэроксиг1о:м : ство 3()%™ног о ::50 ih ,,; -o - скда водороп;а со : ;- j; . 1c) with Lexing: m: leg 3 ()% ™ of legs about: 50 ih ,,; -o - skda zorop; a with:; - j; .
150 г уксусной TTHC IOV:150 g acetic TTHC IOV:
контакта 1 ч: nojiy-ka O : г. держанием олис.гт;-:с;-.к л - роксида водорода UjOn :: О,,022 г-экв/л cf OTBe-p---s ство уксусной i ;i-ir:4Ov iv i f требоза и м l GC i / показaтeл г. Раг -л: л Г ;- -v; таблице„contact 1 h: nojiy-ka O: g. by holding olis.gt; -: s; -. to l - hydrogen oxide UjOn :: O ,, 022 g-eq / l cf OTBe-p --- s acetic acid i ; i-ir: 4Ov iv if requirement and m l GC i / indicated by Par-l: l G; -v; table „
П р. и i е р -i-A... ,,-:;: вл ют аналогично г;р:- :ча}1:. колкчаства перокслла г.л м контакта-. Р&-р-лгьта - таблица, Тол-лко -лои .Etc. and i e p -i-A ... ,, -::: are similar to r; p: -: cha} 1 :. Kolkuchstva peroxsl. F & -rg-table, Tol-lko-loi.
2ч к 3 П прсутсггз: ; водорода удалось noj iy : кислоту с г;аг;маа - л ;;- :-: т- отвечающей тпебо:а; пп::-а-: 12h to 3 n prsutsggs: hydrogen succeeded noj iy: acid with r; ar; maa - l ;; -: -: t- with the corresponding tepebo: a; nn :: - a-: 1
П р и м а п 5. К a-rj кислоты с со;ча;г,:. - PRI m and p 5. To a-rj acid with co; cha; g,:. -
есса предлагаемымEssa proposed
сг изить расход аза с О,66 до ч1.г 1-1аемой кислоты.Determine the flow rate aza from 0, 66 to ch1. 1-1 acid.
бb
Р е -Т е н и R e-T e n i
о C-4;-iCTKi-: уКСуСНОИ КИСЛОс -оиг енернровагги ее в е- агтетатор цел/аолозы и мгкдригга путем обработки 1Г Дорода паи повышенной . с т л и ч а ю Д и и - го, с целью снижени рас- -1да водорода-, процесс осу е; чиме кипени в присут- fni гголиЛосфорной кислотыabout C-4; -iCTKi-: UNIFICATION ACIDS-the energy source of it into the agitator of the whole / aoloza and mcdrigga by treating 1G Dorida units increased. with tl and chu D and i - go, in order to reduce the expansion of hydrogen, the process of e; the boiling point in the presence of gniol of phosphoric acid
:;ри массовом соотношении ;1: : оа.а : полифосфорна ьном 1 i О,023-0522„ с пг п, 1 , отличаю- , что процесс ведут в:; At a mass ratio; 1:: oa.a: polyphosphorus ny 1 i О, 023-0522 "with пг п, 1, it is distinguished that the process is carried out in
г;ооавки укс сного ангидd; oax oks
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU864157274A SU1437363A1 (en) | 1986-10-09 | 1986-10-09 | Method of purifying acetic acid in its regeneration in production of cellulose acetates and acetic anhydride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU864157274A SU1437363A1 (en) | 1986-10-09 | 1986-10-09 | Method of purifying acetic acid in its regeneration in production of cellulose acetates and acetic anhydride |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1437363A1 true SU1437363A1 (en) | 1988-11-15 |
Family
ID=21271335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU864157274A SU1437363A1 (en) | 1986-10-09 | 1986-10-09 | Method of purifying acetic acid in its regeneration in production of cellulose acetates and acetic anhydride |
Country Status (1)
Country | Link |
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SU (1) | SU1437363A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5387713A (en) * | 1991-01-05 | 1995-02-07 | Bp Chemicals Limited | Process for purification of carboxylic acids |
-
1986
- 1986-10-09 SU SU864157274A patent/SU1437363A1/en active
Non-Patent Citations (1)
Title |
---|
Патент DE № 959456, кл. 12 о 12. опубл, 1957. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5387713A (en) * | 1991-01-05 | 1995-02-07 | Bp Chemicals Limited | Process for purification of carboxylic acids |
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