| Patent Number |
Title Of Patent |
Date Issued |
| 7294225 |
Process for production of synthesis gas in combination with the maintenance of the energy balanc |
November 13, 2007 |
| A process (44) for the production of pulp and paper (28), recycling of cooking chemicals (3, 29), combustion of biomass (30, 37) and generation of heat and electric energy (27, 40) comprising a pulp and paper mill (28), in that the part of the process which is recycling cooking chemi |
| 7217302 |
Process for cooling solid and gaseous material during gasification of spent liquor |
May 15, 2007 |
| Process for the recovery of chemicals and energy from spent liquor obtained in the chemical pulping process, in which the spent liquor is gasified under sub-stoichiometric conditions to produce partly one phase of solid and/or fused material, together with partly one phase of a flamm |
| 6790246 |
Apparatus for gasification of spent liquor |
September 14, 2004 |
| Arrangement for understoichiometric gasification of spent liquor from chemical pulp production, comprising an upper reactor part (2), which upper reactor part is provided with a burner (5) for the spent liquor and with an internally clad reactor jacket (4), and a lower separating part |
| 6780211 |
Device for gasification of spent liquor |
August 24, 2004 |
| Device for the understoichiometric gasification of spent liquor from chemical pulp production under centrifugal influence, which device comprises an upper reactor part (1), which upper reactor part is provided with an inlet (31) having a nozzle (8) for combusting the spent liquor, a |
| 6500301 |
Apparatus for gasification of spent liquor |
December 31, 2002 |
| Arrangement for understoichiometric gasification of spent liquor from chemical pulp production, comprising an upper reactor part (2), which upper reactor part is provided with a burner (5) for the spent liquor and with an internally clad reactor jacket (4), and lower separating part (8) |
| 5660685 |
Gasifying black liquor with recycling of generated hydrogen sulphide gas to the gasifier |
August 26, 1997 |
| A method of preparing a digesting liquor having high sulphidity from a spent liquor obtained from digesting cellulosic fiber material, optionally without a conventional causticizing step is provided. Thermal decomposition of the spent liquor is conducted under reducing conditions in |
| 5556605 |
Method of seperating sulphur compounds |
September 17, 1996 |
| A method of separating sulphur compounds out of a gas containing carbon dioxide and hydrogen sulphide, in a gas washing system, said gas being obtained by gasification of spent cellulose liquor. According to the invention the gas washing system has a gas-liquid contact zone (5) opera |
| 5556602 |
Device in a reactor for gasifying spent liquor |
September 17, 1996 |
| This invention relates to a device for thermal decomposition of stock, especially a spent liquor obtained from pulp manufacture, where the gas stream formed in this connection passes through a liquid bath. The decomposition device has a reactor with a chamber in which thermal decompo |
| 5486269 |
Gasification of carbonaceous material in a reactor having a gasification zone and a combustion z |
January 23, 1996 |
| A method and reactor for thermally decomposing a carbonaceous raw material (6) to recover gas and, if applicable, solid or liquid chemicals, the raw material being fed into a chamber (2) for gasification under under-stoichiometric conditions, the gasification is carried out in a gasi |
| 5370771 |
Process for recovering energy and chemicals from spent liquor using low frequency sound |
December 6, 1994 |
| A process and reactor for recovering energy and chemicals from spent liquor obtained in pulp production by thermal decomposing the spent liquor are described, said decomposing being carried out in a reactor at a pressure of from atmospheric pressure up to 150 bar and at a temperature of |
| 5205908 |
Purification of process gas from a partial combustion of black liquor |
April 27, 1993 |
| The present invention relates to a process for the separation of sulphur and sodium compounds from a hot process gas generated during gasification of spent liquor from the kraft pulping industry, through contact with hydrogen sulphide ion and hydroxide ion containing alkaline liquids in |
