Title:
石灰泥を洗浄する方法及び装置
Document Type and Number:
Japanese Patent JP4945437
Kind Code:
B2
Abstract:
The method and an arrangement are for dewatering and washing lime slurry before the dewatered lime mud is passed to a lime mud kiln. The lime slurry is dewatered in a pressurized lime mud filter of disc or drum type. The pressurized lime mud filter is pressurized through a compressor drawing on its suction side (s) gas phase from the filtrate tank and pressurizing on the pressurized side (p) of the compressor the pressure vessel on the lime mud side of the filter. A certain pre-determined amount of gas phase in the gas circulation system is vented and an equivalent pre-determined amount of fresh air is added to the recycled gas phase with the aim of maintaining the partial pressure of oxygen gas above a certain minimum level.
Inventors:
Reynats, patrick
Application Number:
JP2007508303A
Publication Date:
June 06, 2012
Filing Date:
April 14, 2005
Export Citation:
Assignee:
Metso Paper Sweden Activolag
International Classes:
C01F11/06; B01D19/00; B01D33/21; C02F11/12; D21C11/00; D21C11/04; D21C
Domestic Patent References:
| JP7109687A | ||||
| JP4050107U | ||||
| JP62033897A | ||||
| JP7508564A | ||||
| JP9500057A | ||||
| JP62030518A | ||||
| JP1502207A | ||||
| JP3070293U | ||||
| JP4501980A | ||||
| JP10263889A | ||||
| JP2000254418A | ||||
| JP2002166110A | ||||
| JP2008500164A |
Foreign References:
| WO2002063095A1 |
Attorney, Agent or Firm:
Takao Hamano
Teruichi Hirai
Teruichi Hirai