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：US10960391B2

公开(公告)日：2021-03-30

申请号：US16696773

申请日：2019-11-26

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping Ning ,  Qiulin Zhang ,  Tengxiang Zhang ,  Yaqing Zhang ,  Huimin Wang

IPC: B01J38/66 ,  C01B17/02 ,  C01B17/027

Abstract: The present invention discloses a method and system of recovering elemental sulfur and regenerating the catalyst for a sulfur-deposited catalyst, including immersing the sulfur-deposited catalyst in the ammonium sulfide solution, the leaching reaction under normal pressure and temperature, replacing the ammonium sulfide solution and immersing again for extraction for the same time; collecting the leachate of the two steps, conducting gas stripping of the elemental sulfur by adopting the high-temperature nitrogen gas, condensing the tail gas of gas stripping, subjecting to a purification treatment and then discharging, with the liquor condensate being the ammonium sulfide solution. Finally, the solid in the leachate is filtered, washed and dried after the gas stripping to obtain the elemental sulfur; and the washing and drying of catalysts that has been subjected to the two times of immersion and extraction obtain the regenerated catalysts.

公开(公告)号：US20200164355A1

公开(公告)日：2020-05-28

申请号：US16696773

申请日：2019-11-26

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping NING ,  Qiulin ZHANG ,  Tengxiang ZHANG ,  Yaqing ZHANG ,  Huimin Wang

IPC: B01J38/66 ,  C01B17/02 ,  C01B17/027

Abstract: The present invention discloses a method and system of recovering elemental sulfur and regenerating the catalyst for a sulfur-deposited catalyst, including immersing the sulfur-deposited catalyst in the ammonium sulfide solution, the leaching reaction under normal pressure and temperature, replacing the ammonium sulfide solution and immersing again for extraction for the same time; collecting the leachate of the two steps, conducting gas stripping of the elemental sulfur by adopting the high-temperature nitrogen gas, condensing the tail gas of gas stripping, subjecting to a purification treatment and then discharging, with the liquor condensate being the ammonium sulfide solution. Finally, the solid in the leachate is filtered, washed and dried after the gas stripping to obtain the elemental sulfur; and the washing and drying of catalysts that has been subjected to the two times of immersion and extraction obtain the regenerated catalysts.