Phase-change-free heat-exchange integrated heating raw material coal water slurry gasification system and process
A technology of gasification system and coal water slurry, which is applied in the direction of gasification process, granular/powdered fuel gasification, chemical industry, etc. It can solve the problems of unusable low-grade steam heat, easy fouling and blockage of heat exchangers, and flash evaporation High equipment investment and other issues, to achieve the effect of improving energy utilization efficiency, improving system reliability and online rate, and reducing operation difficulty
Inactive Publication Date: 2018-12-25
KUNSHAN UNITED ENERGY TECH CO LTD
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Abstract
The invention discloses a coal water slurry gasification system. The coal water slurry gasification system comprises a gasification furnace, a washing tower, a settling tank, a grey water tank, a coalwater slurry/black water heat exchanger and a grey water/black water heat exchanger which are sequentially arranged and connected through pipelines and is characterized in that the black water inputend of the coal water slurry/black water heat exchanger is connected with the black water output ends of the gasification furnace and the washing tower; the black water input end of the grey water/black water heat exchanger is connected with the black water output end of the coal water slurry/black water heat exchanger; the black water output end of the grey water/black water heat exchanger is connected with the black water input end of the settling tank; the grey water input end of the grey water/black water heat exchanger is connected with the grey water output end of the grey water tank; the grey water output end of the grey water/black water heat exchanger is connected with the grey water input end of the washing tower. The coal water slurry gasification system has the advantages thathigh-temperature black water is subjected to two heat exchanger heat exchanges to heat coal water slurry and grey water, phase change is avoided, low-grade heat energy can be recycled, energy recycling efficiency is increased, a complex flash system is not needed, and equipment investment cost is lowered.
Application Domain
Chemical industryGasification processes details +1
Technology Topic
Coal waterEnergy recycling +10
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