INTEGRATION AS TO HEAT IN PROCESS INVOLVING COAL GASIFICATION AND METHANATION REACTION Russian patent published in 2013 - IPC C10J3/00 F01K7/38 F02C6/18 F01K3/18 C10L3/08 F22B1/18 

FIELD: oil and gas industry.

SUBSTANCE: integrated system consisting of gasification and methanation units and area of the power plant containing steam turbine includes methanation section 202 including the first methanation reactor 214 that has the inlet provided with possibility of receiving synthesis gas and the outlet; the second methanation reactor 216 that has the inlet connected to outlet of the first methanation reactor and outlet; the third methanation reactor 218 having the inlet connected to outlet of the second methanation reactor and outlet; and reheater 206 installed between the second 216 and the third 218 reactors, which heats LP steam; steam turbine section 204 including LP steam turbine 234 that has the inlet connected to the outlet of reheater 206. In addition, methanation section 202 includes evaporator 220 connected to the outlet of the third methanation reactor 218 and the first HP economiser 210 installed between the third methanation reactor 218 and evaporator 220. The second HP economiser 208 installed between the second 216 and the third 218 methanation reactors; HP superheater 236 located between the first 214 and the second 216 methanation reactors. In addition, section of steam turbine 204 includes high pressure steam turbine 230.

EFFECT: integrated system requires no additional steam that is usually used for moistening of dry gas prior to its introduction to conversion reactor, and thus, the amount of non-recoverable energy is reduced in the above system.

12 cl, 2 dwg