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公开(公告)号：US12259129B2
公开(公告)日：2025-03-25
申请号：US17398531
申请日：2021-08-10
Applicant: Kunming University of Science and Technology
Inventor： Qiulin Zhang , Ping Ning , Lianyun Gao , Jianjun Chen , Tianrun Shao
Abstract: The present disclosure provides a graded oxygen regulating, explosion preventing and recycling system and method for liquid nitrogen wash tail gas, and relates to the technical field of environmental protection and energy utilization. The system provided by the present disclosure includes a multi section catalytic combustor, the multi-section catalytic combustor being divided into a first-section catalytic combustion region, a second-section catalytic combustion region, and a third-section catalytic combustion region, the first-section catalytic combustion region and the second-section catalytic combustion region being internally filled with multiple layers of catalysts that are disposed at intervals, and an air flow guide pipe being arranged above each layer of catalyst; a first-section heat exchanger communicating with the first-section catalytic combustion region; a second-section heat exchanger communicating with the second-section catalytic combustion region; a pulverized coal drying section communicating with the second-section heat exchanger; and a boiler section communicating with the third-section catalytic combustion region.
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公开(公告)号：US20220341590A1
公开(公告)日：2022-10-27
申请号：US17398531
申请日：2021-08-10
Applicant: Kunming University of Science and Technology
Inventor： Qiulin Zhang , Ping Ning , Lianyun Gao , Jianjun Chen , Tianrun Shao
Abstract: The present disclosure provides a graded oxygen regulating, explosion preventing and recycling system and method for liquid nitrogen wash tail gas, and relates to the technical field of environmental protection and energy utilization. The system provided by the present disclosure includes a multi section catalytic combustor, the multi-section catalytic combustor being divided into a first-section catalytic combustion region, a second-section catalytic combustion region, and a third-section catalytic combustion region, the first-section catalytic combustion region and the second-section catalytic combustion region being internally filled with multiple layers of catalysts that are disposed at intervals, and an air flow guide pipe being arranged above each layer of catalyst; a first-section heat exchanger communicating with the first-section catalytic combustion region; a second-section heat exchanger communicating with the second-section catalytic combustion region; a pulverized coal drying section communicating with the second-section heat exchanger; and a boiler section communicating with the third-section catalytic combustion region.
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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.
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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.
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