公开(公告)号：US11478672B2

公开(公告)日：2022-10-25

申请号：US16809685

申请日：2020-03-05

Applicant: Kunming University of Science and Technology

Inventor： Ping Ning ,  Bin Li ,  Liwei He ,  Zhang Lin ,  Xueming Liu

IPC: A62D3/36 ,  C22B7/04 ,  A62D3/37 ,  C22B34/32 ,  A62D101/40

Abstract: The present invention discloses a method for detoxifying chromium slag by using high sulfur coal. The method includes: sieving chromium slag into coarse-grained chromium slag and fine-grained chromium slag, air-drying and crushing both the coarse-grained chromium slag and the fine-grained chromium slag; separately mixing the crushed coarse-grained chromium slag and fine-grained chromium slag with the crushed high sulfur coal uniformly; adjusting pH values of a coarse-grained slag mixture and a fine-grained slag mixture to 8.0-11.0 and moisture content thereof to 12%-18%; conducting reduction on the treated coarse-grained slag mixture and fine-grained slag mixture, where the reduction temperature of the fine-grained slag mixture is 500-700° C., the reduction time of the fine-grained slag mixture is 10-30 min, the reduction temperature of the coarse-grained slag mixture is 800-1000° C., the reduction time of the coarse-grained slag mixture is 10-30 min; after the reduction, conducting water quenching, and discharging the product.

公开(公告)号：US11123690B2

公开(公告)日：2021-09-21

申请号：US16701559

申请日：2019-12-03

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  PINGXIANG HUAXING ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY CO., LTD.

Inventor： Ping Ning ,  Qiulin Zhang ,  Guangcheng Wei ,  Dehua Zhang ,  Jing Wang ,  Xin Liu ,  Huimin Wang ,  Bo Li ,  Shaoming Li ,  Bin Li

IPC: B01D53/86 ,  B01J35/04 ,  B01J23/889

Abstract: The present invention discloses a method and device for purifying CO from a flue gas and coupling-suppressing white fog, where the flue gas is introduced into a ceramic honeycomb carrier coated with a CO catalyst, sufficient O2 in the flue gas is utilized to generate CO2 from a low concentration of CO through catalytic oxidation, so as to achieve the purpose of purifying CO, and the flue gas is heated up by the heat released from the catalytic oxidation reaction to more than 110° C. and then discharged into the air, which meets the temperature requirement of coupling-suppressing white fog; the device includes a CO concentration sensor, a temperature sensor, a CO catalytic oxidation layer, an oxidation reaction tower, a desulfurized sintering flue gas, a packing layer I, a packing layer II, a chimney, and a solenoid valve II.

公开(公告)号：US11535572B2

公开(公告)日：2022-12-27

申请号：US16821043

申请日：2020-03-17

Applicant: Kunming University of Science and Technology

Inventor： Ping Ning ,  Senlin Tian ,  Jianhong Huang ,  Qin Zhang ,  Xuewei Hu ,  Bin Li

IPC: C05G3/80 ,  C05G1/00 ,  C09K17/08 ,  C05F5/00 ,  C05F3/00 ,  C05C9/00 ,  B01D53/50 ,  B01D53/80 ,  A01C21/00 ,  A01C23/00

Abstract: The present invention discloses a method for ammonium-enhanced flue gas desulfurization (FGD) by using red mud slurry. The method specifically includes: crushing red mud, sieving the crushed red mud, slurrying the red mud, conducting aeration treatment, adding an ammonium salt and/or ammonia, and conducting natural sedimentation to obtain pretreated red mud slurry and pretreated red mud liquor; adding an ammonium salt and/or ammonia to the slurry, adding water and conducting uniform mixing, conducting pre-FGD, conducting deep desulfurization on treated flue gas by using the pretreated red mud liquor, and directly discharging desulfurized flue gas; and charging the pretreated red mud slurry and the pretreated red mud liquor obtained after the treatment to a replacement tank below, adding lime milk to the replacement tank, conducting stirring and natural sedimentation, conducting soilization on subnatant thick red mud slurry, and refluxing the supernatant to a red mud aeration tank.