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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：US12097461B2
公开(公告)日：2024-09-24
申请号：US17546786
申请日：2021-12-09
Inventor： Guoqiang Chen , Senlin Tian , Ping Ning , Xiaosong Yang , Linan Shao , Zhilong Zhao
CPC classification number: B01D53/002 , B01D5/0021 , B01D5/0072 , B01D46/02
Abstract: A method for treating arsenic-containing flue gas is disclosed. In the method, the arsenic-containing flue gas is subjected to a dry pre-dedusting treatment, and the dedusted flue gas is pre-cooled and then introduced into a vortex quenching system. The arsenic-containing flue gas is divided into high-temperature flue gas and low-temperature flue gas through the vortex quenching system. The outlet temperature of the low-temperature flue gas is dropped below the desublimation temperature of gaseous arsenic trioxide. The low-temperature flue gas is subjected to a gas-solid separation to obtain solid arsenic trioxide and treated flue gas.
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公开(公告)号：US10814273B2
公开(公告)日：2020-10-27
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, and the removal efficiency of the NOx and the SO2 is high.
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公开(公告)号：US11331657B2
公开(公告)日：2022-05-17
申请号：US16722936
申请日：2019-12-20
Applicant: Kunming University of Science and Technology
Inventor： Ping Ning , Xueqian Wang , Qi Wang , Langlang Wang , Qiang Ma , Yingjie Zhang
Abstract: The present invention discloses a method of preparing a catalyst for low-temperature synergistic catalytic purification of NOx and HCN in a flue gas, and the use thereof. Citric acid is dissolved in ethanol to obtain a citric acid/ethanol solution; tetrabutyl titanate is added, mixed uniformly to obtain a tetrabutyl titanate-citric acid/ethanol solution; glacial acetic acid is added dropwise to react for 30-40 min to obtain a solution A; the metal salt solution was added dropwise into the solution A, mixed uniformly and added with nitric acid, ammonium hydroxide is added dropwise to adjust the pH value, and the temperature is raised at a constant speed to obtain a gel B; dried and then then baked at a temperature of 300-500° C. for 3-4 h, cooled in the furnace, pulverized, tableted and sieved to obtain the catalyst for the low-temperature synergistic catalytic purification of NOx and HCN in the flue gas.
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公开(公告)号：US11261088B2
公开(公告)日：2022-03-01
申请号：US17033788
申请日：2020-09-26
Applicant: Kunming University of Science and Technology
Inventor： Ping Ning , Rui Cao , Xueqian Wang , Senlin Tian , Yixing Ma , Langlang Wang , Yingjie Zhang , Peng Chen
Abstract: A method for production of ammonium phosphate from phosphate rock slurry. The method includes: introducing flue gas containing SO2 into a phosphate rock slurry, to yield an absorption solution; evaporating waste ammonia water containing 10-20 wt. % ammonia to yield ammonia gas; introducing the ammonia gas into the absorption solution at a temperature of 110-135° C. until a neutralization degree of the absorption solution reaches 1.5-1.6, thus yielding an ammonium phosphate solution and calcium sulfate; separating the calcium sulfate from the ammonium phosphate solution; and introducing the ammonium phosphate solution to a granulator for granulation to yield ammonium phosphate granules; drying and sieving the ammonium phosphate granules, thereby yielding ammonium phosphate.
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Patent Agency Ranking
公开(公告)号：US20200282252A1
公开(公告)日：2020-09-10
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
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.
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公开(公告)号：US10730010B2
公开(公告)日：2020-08-04
申请号：US16515634
申请日：2019-07-18
Applicant: Kunming University of Science and Technology
Inventor： Senlin Tian , Yuxin Song , Jianhong Huang , Xuewei Hu , Yingjie Li , Ping Ning
Abstract: The invention is a device and method for purifying sulfur dioxide and nitrogen oxide in flue gas with an electrolysis-chemical advanced oxidation enhanced ammonia method. The device includes a thermal activation reactor, ammonium hydroxide storage tank, absorption tower, electrolytic bath and crystallization separator. The method takes raw material part of an ammonium sulfate solution that is a reaction product of ammonia and sulfur oxide in flue gas, and an ammonium persulfate solution prepared by electrolysis of an electrolytic bath as an oxidant to enhance the efficiency of purifying sulfur dioxide and nitrogen oxide in the flue gas with an ammonia method. A thermal activation reactor activates an ammonium persulfate containing solution to generate a strong oxidizing SO4.−, so that NOx and SO2 in the flue gas may be more efficiently converted into a product having higher solubleness for enhanced removal of sulfur dioxide and nitrogen oxide in the flue gas.
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公开(公告)号：US20230080405A1
公开(公告)日：2023-03-16
申请号：US17546786
申请日：2021-12-09
Applicant: Kunming University of Science and Technology
Inventor： Senlin Tian , Guoqiang Chen , Ping Ning , Xiaosong Yang , Linan Shao , Zhilong Zhao
Abstract: A method for treating arsenic-containing flue gas is disclosed. In the method, the arsenic-containing flue gas is subjected to a dry pre-dedusting treatment, and the dedusted flue gas is pre-cooled and then introduced into a vortex quenching system. The arsenic-containing flue gas is divided into high-temperature flue gas and low-temperature flue gas through the vortex quenching system. The outlet temperature of the low-temperature flue gas is dropped below the desublimation temperature of gaseous arsenic trioxide. The low-temperature flue gas is subjected to a gas-solid separation to obtain solid arsenic trioxide and treated flue gas.
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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.
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10.发明申请Process For Purifying Tail Gas From Ore-Smelting Electrical Furnace by Catalytic Oxidization 审中-公开通过催化氧化从冶炼电炉净化尾气的工艺公开(公告)号：US20150041722A1
公开(公告)日：2015-02-12
申请号：US14384716
申请日：2012-03-12
Applicant: Kunming University of Science And Technology
Inventor： Ping Ning , Xueqian Wang , Xiangyu Wang , Senlin Tian , Xiaolong Tang , Huaping Gao , Honghong Yi
IPC: C01B3/58
CPC classification number: C01B3/58 , B01D53/75 , B01D53/78 , B01D53/864 , B01D2255/2022 , B01D2255/2027 , B01D2255/2063 , B01D2255/20738 , B01D2255/20761 , B01D2255/2092 , B01D2255/50 , B01D2255/702 , B01D2258/025 , B01J21/04 , B01J21/18 , B01J23/04 , B01J23/10 , B01J23/72 , B01J23/835 , B01J29/072 , B01J37/0201 , B01J2229/186 , C01B2203/0415 , C01B2203/0435 , C01B2203/169
Abstract: Disclosed is a process for purifying tail gases from an ore-smelting electrical furnace by catalytic oxidization, which comprises: impregnating a catalyst carrier in an impregnating solution, then aging, calcinating, and finally drying, so as to prepare a catalyst of high efficiency; then washing the tail gases from an ore-smelting electrical furnace with an aqueous alkali-containing solution, pre-heating the alkali-washed tail gas; and adjusting the oxygen volume content in the tail gases, charging the tail gases at a certain speed, purifying the gases by a catalytic oxidization fixed bed containing the catalyst of high efficiency, cooling the purified gas, so as to obtain the feed gases for C1 chemistry.
Abstract translation: 公开了一种通过催化氧化来从冶炼电炉中净化尾气的方法，其包括：将催化剂载体浸渍在浸渍溶液中，然后老化，煅烧，最后干燥，以制备高效催化剂; 然后用含矿碱水溶液从冶炼电炉中清洗尾气，预热碱洗尾气; 调整尾气中的氧气体积，以一定的速度对尾气进行充气，用含有高效催化剂的催化氧化固定床净化气体，冷却净化气体，得到C1的进料气体 化学。
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