[go: up one dir, main page]

CA2219550A1 - A method of recovery of chemical compounds from a pulp mill - Google Patents

A method of recovery of chemical compounds from a pulp mill

Info

Publication number
CA2219550A1
CA2219550A1 CA 2219550 CA2219550A CA2219550A1 CA 2219550 A1 CA2219550 A1 CA 2219550A1 CA 2219550 CA2219550 CA 2219550 CA 2219550 A CA2219550 A CA 2219550A CA 2219550 A1 CA2219550 A1 CA 2219550A1
Authority
CA
Canada
Prior art keywords
pulp mill
mill recovery
cycle
recovery
chemical compounds
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA 2219550
Other languages
French (fr)
Other versions
CA2219550C (en
Inventor
Paul F. Earl
Darren F. Lawless
Edward J. Bechberger
Peter David Dick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Superior Plus LP
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2219550A1 publication Critical patent/CA2219550A1/en
Application granted granted Critical
Publication of CA2219550C publication Critical patent/CA2219550C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Paper (AREA)

Abstract

The build up of unwanted components, particularly potassium and chloride values, in pulp mill recovery cycles is avoided by processing pulp mill recovery cycle precipitator ash. The ash first is dissolved in water and the aqueous solution then is evaporated to crystallize sodium sulfate, which then can be returned to the pulp mill recovery cycle. The mother liquor from such crystallization is subjected to extractive crystallization to recover further quantities of crystalline sodium sulfate for return to the pulp mill recovery cycle. The purge stream containing chloride values is removed from the cycle.
CA 2219550 1996-11-01 1997-10-29 A method of recovery of chemical compounds from a pulp mill Expired - Lifetime CA2219550C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3027096P 1996-11-01 1996-11-01
US60/030,270 1996-11-01

Publications (2)

Publication Number Publication Date
CA2219550A1 true CA2219550A1 (en) 1998-05-01
CA2219550C CA2219550C (en) 2008-05-06

Family

ID=21853394

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2219550 Expired - Lifetime CA2219550C (en) 1996-11-01 1997-10-29 A method of recovery of chemical compounds from a pulp mill

Country Status (1)

Country Link
CA (1) CA2219550C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102432038A (en) * 2011-10-09 2012-05-02 中国海诚工程科技股份有限公司 Method and device for removing chlorine and potassium ions in fly ash of alkali recovery furnace and recovering sulfate radicals
CN103159235A (en) * 2011-10-09 2013-06-19 中国海诚工程科技股份有限公司 Method for removing chlorine and potassium ions and recycling sulfate radicals in flying ash in soda recovery furnace
WO2016099392A1 (en) * 2014-12-17 2016-06-23 Aprotech Engineering Ab Process for production of a fertilizer comprising potassium sulfate
WO2019058032A1 (en) * 2017-09-25 2019-03-28 Andritz Oy Method of controlling the chemical balance of a pulp mill

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102432038A (en) * 2011-10-09 2012-05-02 中国海诚工程科技股份有限公司 Method and device for removing chlorine and potassium ions in fly ash of alkali recovery furnace and recovering sulfate radicals
CN103159235A (en) * 2011-10-09 2013-06-19 中国海诚工程科技股份有限公司 Method for removing chlorine and potassium ions and recycling sulfate radicals in flying ash in soda recovery furnace
CN102432038B (en) * 2011-10-09 2013-07-17 中国海诚工程科技股份有限公司 Method and device for removing chlorine and potassium ions in fly ash produced by alkali recovery furnace and recovering sulfate radical
CN103159235B (en) * 2011-10-09 2014-09-24 中国海诚工程科技股份有限公司 Method for removing chlorine and potassium ions and recycling sulfate radicals in flying ash in soda recovery furnace
WO2016099392A1 (en) * 2014-12-17 2016-06-23 Aprotech Engineering Ab Process for production of a fertilizer comprising potassium sulfate
WO2019058032A1 (en) * 2017-09-25 2019-03-28 Andritz Oy Method of controlling the chemical balance of a pulp mill
CN111212945A (en) * 2017-09-25 2020-05-29 安德里兹公司 Methods of controlling chemical balance in pulp mills

Also Published As

Publication number Publication date
CA2219550C (en) 2008-05-06

Similar Documents

Publication Publication Date Title
CA2214443A1 (en) Method for recovery of xylose from solutions
RU2235065C2 (en) Method for producing potassium sulfate from potash and sodium sulfate
MX9702648A (en) Co-production of potassium sulfate, sodium sulfate and sodium chloride.
AU5513499A (en) Method for producing sodium chloride crystals
JPH06199501A (en) Recovery of iodine from composition containing iodine and/oriodide
CA2219550A1 (en) A method of recovery of chemical compounds from a pulp mill
RU94032653A (en) Method of producing high-purity lithium hydroxide or salts thereof from natural brines
US4519806A (en) Enhanced recovery of soda ash from aqueous sodium carbonate solutions containing Na2 SO4 - and NaCl
CA2284969A1 (en) Method of ammonium sulfate purification
ES446383A1 (en) Method of obtaining caustic soda from a sodium chloride liquor containing sulphate ions recovered from an electrolytic cell
US4243641A (en) Method for recovering lithium from sea water
CA1127184A (en) Method to selectively recover sodium citrate from an aqueous solution
FI81612C (en) Methods of preparing alkali metal chlorate
CA2026374C (en) Recovery of ida and glauber's salt from waste crystal liquors
CA2048565C (en) Sulfate removal from chlorate liquor
CA2181613A1 (en) Impurity removal from sodium chlorate
JPS55164040A (en) Recovering platinum from platinum plating waste liquid
US5647955A (en) Method of reducing scaling of heat transfer surfaces in an evaporation plant of a sulphate cellulose mill
DE69411263D1 (en) METHOD AND DEVICE FOR FALLING CRYSTALS FROM A SOLUTION
AU6615994A (en) Recovery of organic acid salts from impure process streams by addition of bases
SU1687580A1 (en) Method of producing potassium chloride
SU948895A1 (en) Method for processing waste liquors from iodine and bromine production
CA2203510A1 (en) Co-production of potassium sulfate, sodium sulfate and sodium chloride
JPS5669227A (en) Recovery or removal of uranium dissolving in alkali aqueous solution
GB2212147A (en) Sodium chloride crystallisation

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20171030