TW200609028A - Process for purification and reuse of phosphoric acid - Google Patents

Process for purification and reuse of phosphoric acid

Info

Publication number
TW200609028A
TW200609028A TW093127458A TW93127458A TW200609028A TW 200609028 A TW200609028 A TW 200609028A TW 093127458 A TW093127458 A TW 093127458A TW 93127458 A TW93127458 A TW 93127458A TW 200609028 A TW200609028 A TW 200609028A
Authority
TW
Taiwan
Prior art keywords
phosphoric acid
etchant solution
acid
aluminum etchant
reuse
Prior art date
Application number
TW093127458A
Other languages
Chinese (zh)
Inventor
Ching-Yen Huang
Yao-Hsing Huang
Tsang-Hsien Hsu
Original Assignee
Taiwan Fertilizer Co Ltd
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 Taiwan Fertilizer Co Ltd filed Critical Taiwan Fertilizer Co Ltd
Priority to TW093127458A priority Critical patent/TW200609028A/en
Publication of TW200609028A publication Critical patent/TW200609028A/en

Links

Landscapes

  • Removal Of Specific Substances (AREA)

Abstract

The present invention provides a process for effective purification and reuse of phosphoric acid from an aluminum etchant solution. The invented process comprises the steps of: (a) using a fractionation process to separate nitric acid from the aluminum etchant solution and remove the nitric acid; (b) using a fractionation process to separate acetic acid from the residual aluminum etchant solution from Step (a); (c) adding alcohol into the residual aluminum etchant solution from Step (b) to perform esterification reaction of acetic acid for removing minute amount of acetic acid; and (d) using a fractionation process to remove acetic ester and water produced from Step (c) and recycle phosphoric acid. The invented process can obtain phosphoric acid with a purity no less than 70%.
TW093127458A 2004-09-10 2004-09-10 Process for purification and reuse of phosphoric acid TW200609028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW093127458A TW200609028A (en) 2004-09-10 2004-09-10 Process for purification and reuse of phosphoric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW093127458A TW200609028A (en) 2004-09-10 2004-09-10 Process for purification and reuse of phosphoric acid

Publications (1)

Publication Number Publication Date
TW200609028A true TW200609028A (en) 2006-03-16

Family

ID=57807471

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093127458A TW200609028A (en) 2004-09-10 2004-09-10 Process for purification and reuse of phosphoric acid

Country Status (1)

Country Link
TW (1) TW200609028A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108640093A (en) * 2018-06-22 2018-10-12 湖北永绍科技股份有限公司 A kind of process for separating and purifying of mixing waste acid liquor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108640093A (en) * 2018-06-22 2018-10-12 湖北永绍科技股份有限公司 A kind of process for separating and purifying of mixing waste acid liquor
CN108640093B (en) * 2018-06-22 2021-11-09 湖北永绍科技股份有限公司 Separation and purification process of mixed waste acid solution

Similar Documents

Publication Publication Date Title
DE50206163D1 (en) PROCESS FOR PREPARING (METH) ACRYLIC ACID ESTERS
MY148249A (en) Process for the production of esters of mono-, di- or polycarboxylic acids
DE502005006779D1 (en) Process for the accelerated enzymatic synthesis of triglycerides of unsaturated fatty acids
WO2009106550A9 (en) Method for the production of (meth)acrylates of c10 alcohol mixtures
MX2009005940A (en) Process for making terpene esters.
ATE376987T1 (en) METHOD FOR PRODUCING 1,6-HEXANEDIOL IN A PURITY OF OVER 99.5
ATE318255T1 (en) METHOD FOR PRODUCING ESTERS
ATE260235T1 (en) METHOD FOR PRODUCING FORMIC ACID
EP1298120A3 (en) Method for producing (meth)acrylic acid
WO1999050221A3 (en) Method for producing (meth)acrylic acid and (meth)acrylic acid esters
CA2516598A1 (en) Process for obtaining fatty acid alkyl esters, rosin acids and sterols from crude tall oil
JP2006518768A5 (en)
HUP0203734A2 (en) A method for preparing lysophosphatidylethanolamine
KR101796324B1 (en) Method and system for purifying monomers
TW200609028A (en) Process for purification and reuse of phosphoric acid
JP2008037847A (en) Method for producing monoester
MY140698A (en) Method for discontinuous purification of crude acrylic acid by means of crystallization
ATE520641T1 (en) METHOD FOR PRODUCING A POLYFLUORALKYL (METH)ACRYLIC ACID ESTER
ATE417815T1 (en) METHOD FOR PRODUCING SORBITAN FATTY ACID ESTERS
EP1247793B1 (en) Improved process for the manufacture of 2-ethylhexyl acrylate
ATE361271T1 (en) METHOD FOR PRODUCING POLYGLYCEROL FATTY ACID ESTERS
WO2004048308A3 (en) Method and device for hydrolytically obtaining a carboxylic acid and alcohol from the corresponding carboxylic ester
JP2001181233A (en) Method for producing (meth)acrylic ester
JP4099950B2 (en) Method for producing cyclohexyl (meth) acrylate
ATE258911T1 (en) METHOD FOR PRODUCING ALKOXYCINNAMON ACID ESTERS