公开(公告)号：US11220642B2

公开(公告)日：2022-01-11

申请号：US16466810

申请日：2018-08-03

Applicant: SHANDONG UNIVERSITY

Inventor： Chunyuan Ma ,  Tao Wang ,  Binxuan Zhou ,  Zhen Zhang ,  Jiapeng Fu ,  Liqiang Zhang ,  Xiqiang Zhao ,  Xingxing Cheng

IPC: C10J3/50 ,  C10J3/52 ,  C10J3/76

Abstract: A pulverized coal gasification device and process for producing high heating value coal gas with low carbon residue content includes a U-shaped coal gas generation furnace and a coal gas-semicoke separating device, and the U-shaped coal gas generation furnace consists of two section structures including high-temperature and low-temperature sections which are arranged in a U-shaped manner; the high-temperature section and the low-temperature section share an ash hopper; the high-temperature section is a downward entrained-flow bed, and the low-temperature section is an upward entrained-flow bed; and an inlet of the coal gas separating device is connected to the outlet of the low-temperature section, a solid outlet of the coal gas separating device is connected to an inlet of the high-temperature section, and a gas outlet of the coal gas separating device is connected to a coal gas waste heat utilizing and purifying system. The coal utilization rate can be greatly increased.

公开(公告)号：US11292718B2

公开(公告)日：2022-04-05

申请号：US16618937

申请日：2018-12-27

Applicant: SHANDONG UNIVERSITY

Inventor： Chunyuan Ma ,  Xiao Xia ,  Lin Cui ,  Liqiang Zhang ,  Xiqiang Zhao ,  Jun Li ,  Tai Feng ,  Shizhen Zhang

IPC: B01D1/28 ,  B01D39/12 ,  B01D39/20 ,  B01D53/50 ,  B01D53/56 ,  B01D53/80 ,  B03C3/16 ,  C01B17/04 ,  C01B17/05

Abstract: The present invention discloses a process for preparing sulfur from reduction of sulfate/nitrate by iron-carbon and recovering desulfurization/denitration agents. High-concentration SO2 flue gas produced by calcination of a sulfate and NOx produced by heating decomposition of a nitrate can be directly reduced to elemental sulfur vapor and N2 through reaction with an iron-carbon material at a high temperature. Then, after dust removal, cooling and fine dust removal, sulfur is recovered by a sulfur recovery device, and metal oxides can replace alkaline mineral resources such as limestone as raw materials of desulfurization (denitration) agents. This process can recycle the desulfurization and denitration agents.