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：US10981204B2

公开(公告)日：2021-04-20

申请号：US16419767

申请日：2019-05-22

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Senlin Tian ,  Jianhong Huang ,  Xiangliang Liu ,  Yingjie Li ,  Xuewei Hu ,  Ping Ning

IPC: B09C1/00 ,  B09C1/08 ,  B01D53/14 ,  B01D53/18 ,  B09C1/06

Abstract: The present invention discloses a method and system for thermal desorption treatment of organic-contaminated soil and treatment of desorbed waste gas. The system includes a thermal incinerator, a desorption flue gas temperature regulating device, a thermal desorption reactor, a dust collector, a heat exchange/steam separator, an absorption reactor, a star-shaped unloader, and a soil cooler. An absorbent containing organic pollutants is used as a fuel, and subjected to thermal incineration to achieve the decomposition and harmless treatment of the organic pollutants; and high temperature flue gas generated by the incineration is used as a heat carrier for thermal desorption remediation of the organic-contaminated soil; and by means of the high solubility capability of fuel oil to organic matter, the fuel oil is used as an absorbent to absorb and purify the organic pollutants in desorbed waste gas, so that the gas is purified gas and up-to-standard discharge is achieved. The present invention achieves the thermal desorption of the organic pollutants, the absorption and purification of the pollutants in the desorbed waste gas, and the thorough decomposition of the organic pollutants; the fuel oil has both functions of the absorbent and the fuel, and the present invention has the advantages of short process, low energy consumption, simple equipment and low cost.

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：US20200129923A1

公开(公告)日：2020-04-30

申请号：US16601661

申请日：2019-10-15

Applicant: Kunming University of Science and Technology

Inventor： Yingjie Li ,  Senlin Tian ,  Jianhong Huang ,  Xuewei Hu ,  Ping Ning

IPC: B01D53/86

Abstract: The invention discloses a method for simultaneously removing SO2 and NOx in flue gas: uniformly mixing a water-soluble ruthenium salt with ammonia water to obtain an aqueous solution of a ruthenium-amine complex; subjecting the flue gas and the aqueous solution of the ruthenium-amine complex to a countercurrent contact reaction under the temperature of 5-60° C., pH of 7.5-12 to obtain a solution A and purified gas; discharging the solution A of the step (2) into a crystallization tank to crystallize and separate an ammonium salt to obtain a solution B, returning the solution B to replace the aqueous solution of the ruthenium-amine complex. The invention utilizes the ruthenium-amine complex having a strong capability of complexing with NO as well as residual oxygen in the flue gas to carry out liquid phase catalytic oxidation to convert the NOx into ammonium nitrate, the removal efficiency of the NOx and the SO2 is high.