Dry quenching dual pressure high-temperature and high-pressure residual heat power generation system

Abstract

The invention discloses a dry quenching dual pressure high-temperature and high-pressure residual heat power generation system, which comprises a dry quenching high-temperature and high-pressure superheated steam dual pressure residual heat boiler, a steam turbine generator unit, a condensation device and a condensation water pump, wherein the steam turbine generator unit and the high-pressure superheated steam dual pressure residual heat boiler form a return circuit through the condensation device and the condensation water pump. The dry quenching dual pressure high-temperature and high-pressure residual heat power generation system provided by the invention can fully absorb the energy of smoke and has higher efficiency for recovering residual heat, and the residual heat recovering powergeneration technology reaches the international advanced level by adopting the dual pressure residual heat boiler plus a perfect inert gas recirculation system.

Description

technical field [0001] The invention relates to a high-efficiency CDQ dual-pressure waste heat boiler equipped with a steam turbine generator set waste heat power generation system, in particular to a CDQ dual-pressure high-temperature and high-pressure waste heat power generation system. Background technique [0002] The coking project adopts wet coke quenching. For every 1 ton of red coke that is extinguished, 0.5 ton of steam containing a large amount of phenol, cyansulfide and dust will be thrown into the sky, seriously polluting the atmosphere and the surrounding environment. It is of great significance to control the environmental pollution of wet coke quenching. Dry coke quenching uses inert gas to extinguish red coke in a closed system, and is equipped with good dust removal facilities, which does not pollute the environment. At the same time, since coke CDQ can generate steam and can be used for power generation, it can avoid the pollution of the atmosphere by conv...

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Problems solved by technology

[0006] According to the current technology at home and abroad, the types of CDQ waste heat boilers are: single pressure, single pressure + flash steam, and most of the CDQ waste heat power generation uses a single pressure waste heat boiler equipped with a steam turbine generator set, which is characterized by: single pressure waste heat boiler Equipped with a turbo-generator set, the exhaust gas temperature of the waste heat boiler is high (about 165°C), and low-pressure steam for oxygen removal needs to be provided from the outside, the waste heat utilization efficiency of CDQ is low, and the power generation cost is high

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