BOTTOM PRODUCT COOLING IN A FLUIDIZED-BED GASIFICATION
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a system and method for cooling and relieving pressure of the bottom product produced by the fluidized-bed gasification of biomass, brown coal, or hard coal having a high ash content. With such a method and system, an economic solution for cooling and pressure expansion of the bottom product produced is to be ensured, which is achieved by the bottom product leaving the fluidized bed at a maximum of 1500° C. and a pressure of up 40 bar, being fed to an intermediate store, then being fed from the intermediate store to a pressure tank having a cooling system, and then being fed to a pressure release system.
-
Citations
17 Claims
-
1-8. -8. (canceled)
-
9. A method for cooling and reducing the pressure of high bottom product produced by fluidized-bed gasification of biomass, brown coal, and bituminous coal having high ash content, comprising:
-
exposing biomass to a fluidized-bed gasification process; generating high ash content bottom product from the biomass that has been exposed to the fluidized-bed gasification process; conveying the bottom product, at a maximum temperature of 1,500°
C. and a maximum pressure of 40 bar, away from a first fluidized-bed of the fluidized-bed gasification process and into an intermediate store;conveying the bottom product from the intermediate store to a pressure vessel having a cooling system in communication therewith; cooling, by the cooling system, the bottom product located within the pressure vessel; conveying the bottom product from the pressure vessel to a pressure reduction system; and reducing the pressure of the cooled bottom product by the pressure reduction system. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A system for cooling and reducing pressure of bottom product generated from the fluidized-bed gasification of biomass, brown coal, or bituminous coal having high ash content, comprising:
-
a pressurized fluidized-bed degassifier configured to generate bottom product and having a bottom product outlet through which bottom product generated therein may exit therefrom; a buffer tank in communication with said pressurized fluidized-bed degassifier and configured to store bottom product conveyed to thereto from said pressurized fluidized-bed degassifier; a pressure vessel in communication with said buffer tank, the pressure vessel having a cooling system associated therewith and configured to cool bottom product contained therein; and a sluice system in communication with said pressure vessel and configured to reduce the pressure of cooled bottom product conveyed thereto from said pressure vessel. - View Dependent Claims (17)
-
Specification