Coal slurry preheater and coal gasification system and method using the device

The present invention discloses a coal slurry preheater and a coal gasification system and method using the device, particularly relates to a gasification system. The system comprises a gasification chamber for converting the coal slurry into syngas, and a shock chamber for cooling the syngas from the gasification chamber. The gasification system further comprises a preheater located in the shock chamber, and the preheater is used for preheating the coal slurry before entering the gasification chamber by using the heat in the shock chamber. The preheater comprises a conduit device. A passageway for the coal slurry to pass through is arranged in the conduit device, and the passageway is in communication with the gasification chamber and is located at the front end of the gasification chamber along the flow of the coal slurry. The invention also relate to the preheater used in the gasification system and a gasification method using the gasification device. 本发明公开了煤浆预热装置及使用该装置的煤气化系统和方法，具体涉及种气化系统，其包括气化装置，该气化装置包括用来