China University of Petroleum

Ruotong Cui

Yuanyu Tian

Yingyun Qiao

Kechang Xie

Yanpeng Zhang

Jingxian Wang

Yiliang Tian

Jinhong Zhang

Zhenghong Luo

Jiancheng Wang

A process for preparing fuel gas through gasification of powdered coal, comprising: contacting powdered coal and ash residue in a riser reactor under hydrogenation conditions to perform a pyrolysis reaction and a gas-phase tar cracking reaction; subjecting it to a primary gas-solid separation to obtain a gasified gas and a solid fraction; subjecting the gasified gas to a secondary gas-solid separation to obtain a solid fraction containing fine particle semi-coke and a gasified gas; subjecting the solid fraction to a gasification calcination reaction, flowing the gasified coal gas and the high-temperature ash residue u into the riser reactor; subjecting the solid fraction containing fine particle semi-coke to a melting gasification reaction, falling the liquid residue to the material-returning device of fluidized bed for cooling and solidification, and feeding the second high-temperature gasified coal gas to the riser reactor via a high-temperature gasified gas returning pipe.

Process for preparing fuel gas through graded pyrolysis and gasification of powdered coal

The present disclosure discloses a Y-shaped entrained-flow high-temperature zoned gasification device adopting dry-process slag-discharging, which comprises a Y-shaped entrained-flow gasifier, wherein the Y-shaped entrained-flow gasifier is partitioned by a sectioned conical head into an upper gasification chamber and a lower chilling chamber; a descending bed atomizing chiller is arranged in the chilling chamber, a conical top of the descending bed atomizing chiller is in communication with an outlet of the sectioned conical head, and two or more chilling atomizing nozzles are evenly arranged on the conical top of the descending bed atomizing chiller in a circumferential direction.

Y-shaped entrained-flow high-temperature zoned gasification device adopting dry-process slag-discharging

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Qingdao, China

Ruotong Cui