| Patent Number |
Title Of Patent |
Date Issued |
| 7587994 |
Arrangement in recovery boiler |
September 15, 2009 |
| The invention relates to an arrangement in a recovery boiler into which spent liquor to be incinerated and combustion air are supplied, the arrangement comprising superheaters (4a-4d) in the upper part of the recovery boiler for recovering heat, at least one boiler bank (11) located |
| 7351387 |
Method for removing impurities accumulated in a scrubbing fluid |
April 1, 2008 |
| A method for removing impurities accumulated in a scrubbing fluid in a flue gas scrubber and effluents from the scrubber. The flue gases are scrubbed with a scrubbing fluid that includes a calcium-containing absorbent. The scrubbing fluid containing gypsum and other impurities and pr |
| 7194983 |
Circulating fluidized bed boiler |
March 27, 2007 |
| A circulating fluidized bed boiler including a furnace, a separator which is connected to the furnace to separate fluidized bed material from a flow leaving the furnace, as well as a return duct between the separator and the furnace to return the separated fluidized bed material into the |
| 7004089 |
Combined fluidized bed and pulverized coal combustion method |
February 28, 2006 |
| The invention relates to a combined fluidized bed and pulverized coal combustion method and system. In the method, fluidizing air (4) is injected into a fluidized bed (2) situated in the bottom portion of the combustion chamber (3). Into the combustion chamber, to above the fluidized |
| 6932000 |
System for feeding combustion air in a soda recovery boiler |
August 23, 2005 |
| A method and a system for feeding combustion air of a soda recovery boiler to a furnace. The air is fed to the boiler furnace as primary air jets and auxiliary airjets, which are substantially shorter than the primary air jets. At least one primary airjet is placed between two opposite a |
| 6874449 |
Black liquor gun |
April 5, 2005 |
| The invention relates to a black liquor gun (4) for feeding black liquor into a recovery boiler (1), comprising a nozzle (11) to be inserted into a furnace (2). Inside the black liquor gun (4) there is a flow guidance element (16), which provides an annular flow channel between the outer |
| 6782848 |
Method in connection with a pipe grate for fluidized bed boiler and a pipe grate |
August 31, 2004 |
| A method for adjusting a supply of gaseous medium to a fluidized bed boiler performing a combustion process and including a pipe grate comprising a plurality of pipes. An active area of the pipe grate is adjusted to form at least one inactive bed area that is out of use by shutting off t |
| 6609482 |
Method in a soda recovery boiler, and a soda recovery boiler |
August 26, 2003 |
| In a soda recovery boiler, flue gases are led through a so-called economizer (3) to recover heat from flue gases. The flue gases are cooled in the last stage (3b) of the economizer (3) with a circulation water cooler (4) for flue gases, separate from the supply water system of the bo |
