Invention Grant
- Patent Title: Method and equipment for treatment of black liquor at pulp mill
- Patent Title (中): 纸浆厂黑液处理方法和设备
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Application No.: US12990869Application Date: 2009-05-05
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Publication No.: US08821686B2Publication Date: 2014-09-02
- Inventor: Jani Lehto , Kari Kuukkanen , Timo Honkola
- Applicant: Jani Lehto , Kari Kuukkanen , Timo Honkola
- Applicant Address: FI Tampere
- Assignee: Valmet Power Oy
- Current Assignee: Valmet Power Oy
- Current Assignee Address: FI Tampere
- Agency: Ladas & Parry LLP
- Priority: FI20085416 20080506
- International Application: PCT/FI2009/050362 WO 20090505
- International Announcement: WO2009/135999 WO 20091112
- Main IPC: D21C11/04
- IPC: D21C11/04 ; D21C11/06 ; D21C11/12
Abstract:
The invention relates to a method and equipment for treatment of black liquor at a pulp mill in order to recover chemicals and energy contained therein. In the invention, the black liquor is pyrolyzed in a pyrolysis reactor (4), the formed gaseous components are forwarded for utilization and the solids are mixed with water, whereby the formed solids are returned to a lime burning kiln (1) and the sodium-hydroxide-containing liquid is returned to the pulp cooking process.
Public/Granted literature
- US20110120662A1 METHOD AND EQUIPMENT FOR TREATMENT OF BLACK LIQUOR AT PULP MILL Public/Granted day:2011-05-26
Information query
