Title:
TREATMENT METHOD AND TREATMENT APPARATUS OF RECOVERY BOILER COLLECTION ASH
Document Type and Number:
Japanese Patent JP2015160193
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a treatment method and a treatment apparatus of recovery boiler collection ash capable of efficiently recovering a high purity sodium salt such as sodium sulfate and the like with a little contamination of a potassium salt and a chloride.SOLUTION: In a treatment method, a slurry is prepared by mixing at least a part of recovery boiler collection ash collected from a recovery boiler to water and sodium salt-containing solid matter is deposited by an evaporation method and recovered. A treatment apparatus is provided with a slurry-preparing tank 1, an evaporation deposition tank 3 disposed at the downstream side of the slurry-preparing tank 1 and flow channels L1, L3 connecting between the slurry-preparing tank 1 and the evaporation deposition tank 3. In the evaporation deposition tank 3, the sodium salt-containing solid matter is deposited to a treatment liquid in the tank by the evaporation method.
Inventors:
TAKAHASHI HAJIME
YAMAMOTO MANABU
YAMAMOTO MANABU
Application Number:
JP2014038467A
Publication Date:
September 07, 2015
Filing Date:
February 28, 2014
Export Citation:
Assignee:
OJI HOLDINGS CORP
International Classes:
B09B3/00; C02F1/04; D21C11/00
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes