Title:
蒸解薬品回収工程の捕集灰の処理方法
Document Type and Number:
Japanese Patent JP4617561
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for treating collected ash, by which chlorine and potassium are removed from collected ash in a digesting chemical recovery process in a pulp production. SOLUTION: This method for treating collected ash in a digesting chemical recovery process comprises a chlorine ion separation process for alternately passing a dissolved solution of collected ash in a digesting chemical recovery process and water through a packed bed of an amphoteric ion exchange resin, separating a fraction rich in sulfate ion and carbonate ion from a fraction rich in chlorine ion and recovering the fractions and a potassium ion adsorption and removal process for passing the dissolved solution of collected ash or the solution of the fraction rich in sulfate ion and carbonate ion recovered in the chlorine ion separation process through a packed bed of a cation exchange resin.
Inventors:
Tensei Kono
Masanori Onuki
Koso Saburo
Masanori Onuki
Koso Saburo
Application Number:
JP2000332918A
Publication Date:
January 26, 2011
Filing Date:
October 31, 2000
Export Citation:
Assignee:
Nippon Rensui Co., Ltd.
Hokuetsu Kishu Paper Co., Ltd.
Hokuetsu Kishu Paper Co., Ltd.
International Classes:
B09B3/00; D21C11/00
Domestic Patent References:
| JP2052090A | ||||
| JP2001508838A | ||||
| JP2002138381A |
Attorney, Agent or Firm:
Kazuhiko Okada