Patents Assigned to Jiangnan Environmental Protection Group Inc.
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Patent number: 10399033Abstract: Apparatus and methods for desulfurization of a sulfur-oxide containing gas by treatment with ammonia containing liquids. The apparatus and methods may utilize two distinct circuits of two different ammonia containing liquids which are applied in two distinct chambers. The gas may be cooled prior to entry into the circuits. There may be fluid communication between the two circulation circuits.Type: GrantFiled: March 19, 2019Date of Patent: September 3, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Changxiang Xu, Xiangjun Xu, Yongying Luo
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Patent number: 10369517Abstract: Apparatus and methods for controlling aerosol production during absorption in ammonia desulfurization, by removing sulfur dioxide in flue gas with an absorption circulation liquid containing ammonium sulfite, so as to control the aerosol production during absorption in ammonia desulfurization. Efficient desulfurization and dust removal may be achieved by staged solution composition control and reaction condition control. At the same time ammonia escape and aerosol production during absorption may be controlled. The flue gas may be subjected to preliminary temperature lowering and purification, and may be allowed to contact with an absorption circulation liquid and a fine particle washing circulation liquid sequentially. Levels of solution compositions and reaction temperatures may be controlled.Type: GrantFiled: December 26, 2018Date of Patent: August 6, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Lifang Qi, Jinyong Wang
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Patent number: 10357741Abstract: Apparatus and methods for controlling aerosol production during absorption in ammonia desulfurization, by removing sulfur dioxide in flue gas with an absorption circulation liquid containing ammonium sulfite, so as to control the aerosol production during absorption in ammonia desulfurization. Efficient desulfurization and dust removal may be achieved by staged solution composition control and reaction condition control. At the same time ammonia escape and aerosol production during absorption may be controlled. The flue gas may be subjected to preliminary temperature lowering and purification, and may be allowed to contact with an absorption circulation liquid and a fine particle washing circulation liquid sequentially. Levels of solution compositions and reaction temperatures may be controlled.Type: GrantFiled: September 13, 2018Date of Patent: July 23, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Lifang Qi, Jinyong Wang
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Patent number: 10343110Abstract: Apparatus and methods for denitrification and desulfurization of and dust removal from an FCC tail gas by an ammonia-based process. The apparatus may include a first-stage waste heat recovery system, a denitrification system, a dust removal and desulfurization system, a tail gas exhaust system, and an ammonium sulfate post-processing system. The dust removal and desulfurization system may include a dedusting tower and an absorption tower disposed separately. The top and the bottom of the absorption tower may be connected respectively to the tail gas exhaust system and the ammonium sulfate post-processing system. The absorption tower may include sequentially, from bottom to top, an oxidation section, an absorption section, and a fine particulate control section. The methods may be implemented with the apparatus.Type: GrantFiled: October 23, 2018Date of Patent: July 9, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jun Zhang, Yongying Luo, Qiang Tan, Xiangjun Xu
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Patent number: 10213739Abstract: Apparatus and methods for denitrification and desulfurization of and dust removal from an FCC tail gas by an ammonia-based process. The apparatus may include a first-stage waste heat recovery system, a denitrification system, a dust removal and desulfurization system, a tail gas exhaust system, and an ammonium sulfate post-processing system. The dust removal and desulfurization system may include a dedusting tower and an absorption tower disposed separately. The top and the bottom of the absorption tower may be connected respectively to the tail gas exhaust system and the ammonium sulfate post-processing system. The absorption tower may include sequentially, from bottom to top, an oxidation section, an absorption section, and a fine particulate control section. The methods may be implemented with the apparatus.Type: GrantFiled: March 28, 2018Date of Patent: February 26, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jun Zhang, Yongying Luo, Qiang Tan, Xiangjun Xu
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Patent number: 10207220Abstract: Methods, apparatus, and compositions for cleaning gas. The use of segmented multistage ammonia-based liquid spray with different oxidation potentials to remove sulfur compounds from gas. The use of different oxidation potentials may reduce unwanted ammonia slip.Type: GrantFiled: April 7, 2017Date of Patent: February 19, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Changxiang Xu
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Patent number: 10201783Abstract: A desulfurization absorption tower, a method for setting up the same and a method for operating the same. The tower may include an internal anti-corrosion layer that may be used for contacting the flue gas and the desulfurization absorption liquid, may define the tower chamber, and may include stainless steel plate whose thickness is 1.0 mm to 6.0 mm. The tower body may include an external supporting layer that may be used for supporting the anti-corrosion layer and may include carbon steel. The supporting layer and the anti-corrosion layer may be designed to jointly bear a load, wherein the supporting layer may be designed to bear a large part of the load, and the anti-corrosion layer may be designed to bear a small part of the load.Type: GrantFiled: December 1, 2017Date of Patent: February 12, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Congzhi Zhang, Yongying Luo
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Patent number: 10173171Abstract: Apparatus and methods for denitrification and desulfurization of and dust removal from an FCC tail gas by an ammonia-based process. The apparatus may include a first-stage waste heat recovery system, a denitrification system, a dust removal and desulfurization system, a tail gas exhaust system, and an ammonium sulfate post-processing system. The dust removal and desulfurization system may include a dedusting tower and an absorption tower disposed separately. The top and the bottom of the absorption tower may be connected respectively to the tail gas exhaust system and the ammonium sulfate post-processing system. The absorption tower may include sequentially, from bottom to top, an oxidation section, an absorption section, and a fine particulate control section. The methods may be implemented with the apparatus.Type: GrantFiled: March 28, 2018Date of Patent: January 8, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jun Zhang, Yongying Luo, Qiang Tan, Xiangjun Xu
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Patent number: 10173170Abstract: Methods, apparatus, and compositions for cleaning gas. The use of segmented multistage ammonia-based liquid spray with different oxidation potentials to remove sulfur compounds from gas. The use of different oxidation potentials may reduce unwanted ammonia slip.Type: GrantFiled: April 7, 2017Date of Patent: January 8, 2019Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Changxiang Xu
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Patent number: 10159929Abstract: Ammonia-adding apparatus and methods for ammonia-based desulfurization use multi-stage control, calculate a theoretical amount of ammonia based on gas amounts provided by an inlet continuous emission monitoring system (CEMS) and an outlet CEMS of the ammonia-based desulfurization device or associated gas amounts, a SO2 concentration provided by the inlet CEMS, and a predetermined SO2 concentration of the outlet CEMS. The apparatus and methods calculate a corrected theoretical amount of ammonia using half of the ratio of the actual amount of added ammonia to the actual amount of removed sulfur dioxide as a correction coefficient for the theoretical amount of ammonia; add an ammonia absorbent equivalent to the corrected theoretical amount of ammonia to the ammonia-based desulfurization device through an ammonia metering means and an ammonia control valve, and automatically control the actual ammonia flow rate based on the actual SO2 concentration and a change trend provided by the outlet CEMS.Type: GrantFiled: April 16, 2018Date of Patent: December 25, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jingyong Wang, Jun Zhang
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Patent number: 10112145Abstract: Apparatus and methods for controlling aerosol production during absorption in ammonia desulfurization, by removing sulfur dioxide in flue gas with an absorption circulation liquid containing ammonium sulfite, so as to control the aerosol production during absorption in ammonia desulfurization. Efficient desulfurization and dust removal may be achieved by staged solution composition control and reaction condition control. At the same time ammonia escape and aerosol production during absorption may be controlled. The flue gas may be subjected to preliminary temperature lowering and purification, and may be allowed to contact with an absorption circulation liquid and a fine particle washing circulation liquid sequentially. Levels of solution compositions and reaction temperatures may be controlled.Type: GrantFiled: March 16, 2018Date of Patent: October 30, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Lifang Qi, Jinyong Wang
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Patent number: 10099170Abstract: Ammonia-adding apparatus and methods for ammonia-based desulfurization use multi-stage control, calculate a theoretical amount of ammonia based on gas amounts provided by an inlet continuous emission monitoring system (CEMS) and an outlet CEMS of the ammonia-based desulfurization device or associated gas amounts, a SO2 concentration provided by the inlet CEMS, and a predetermined SO2 concentration of the outlet CEMS. The apparatus and methods calculate a corrected theoretical amount of ammonia using half of the ratio of the actual amount of added ammonia to the actual amount of removed sulfur dioxide as a correction coefficient for the theoretical amount of ammonia; add an ammonia absorbent equivalent to the corrected theoretical amount of ammonia to the ammonia-based desulfurization device through an ammonia metering means and an ammonia control valve, and automatically control the actual ammonia flow rate based on the actual SO2 concentration and a change trend provided by the outlet CEMS.Type: GrantFiled: July 27, 2017Date of Patent: October 16, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jinyong Wang
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Patent number: 10092877Abstract: Apparatus and methods for denitrification and desulfurization of and dust removal from an FCC tail gas by an ammonia-based process. The apparatus may include a first-stage waste heat recovery system, a denitrification system, a dust removal and desulfurization system, a tail gas exhaust system, and an ammonium sulfate post-processing system. The dust removal and desulfurization system may include a dedusting tower and an absorption tower disposed separately. The top and the bottom of the absorption tower may be connected respectively to the tail gas exhaust system and the ammonium sulfate post-processing system. The absorption tower may include sequentially, from bottom to top, an oxidation section, an absorption section, and a fine particulate control section. The methods may be implemented with the apparatus.Type: GrantFiled: June 9, 2017Date of Patent: October 9, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jun Zhang, Yongying Luo, Qiang Tan, Xiangjun Xu
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Patent number: 10016721Abstract: Apparatus and methods for desulfurization of a sulfur-oxide containing gas by treatment with ammonia containing liquids. The apparatus and methods may utilize two distinct circuits of two different ammonia containing liquids which are applied in two distinct chambers. The gas may be cooled prior to entry into the circuits. There may be fluid communication between the two circulation circuits.Type: GrantFiled: June 9, 2017Date of Patent: July 10, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Changxiang Xu, Xiangjun Xu, Yongying Luo
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Patent number: 9981222Abstract: Apparatus and methods for desulfurization of a sulfur-oxide containing gas by treatment with ammonia containing liquids. The apparatus and methods may utilize two distinct circuits of two different ammonia containing liquids which are applied in two distinct chambers. The gas may be cooled prior to entry into the circuits. There may be fluid communication between the two circulation circuits.Type: GrantFiled: June 9, 2017Date of Patent: May 29, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Changxiang Xu, Xiangjun Xu, Yongying Luo
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Patent number: 9975078Abstract: Ammonia-adding apparatus and methods for ammonia-based desulfurization use multi-stage control, calculate a theoretical amount of ammonia based on gas amounts provided by an inlet continuous emission monitoring system (CEMS) and an outlet CEMS of the ammonia-based desulfurization device or associated gas amounts, a SO2 concentration provided by the inlet CEMS, and a predetermined SO2 concentration of the outlet CEMS. The apparatus and methods calculate a corrected theoretical amount of ammonia using half of the ratio of the actual amount of added ammonia to the actual amount of removed sulfur dioxide as a correction coefficient for the theoretical amount of ammonia; add an ammonia absorbent equivalent to the corrected theoretical amount of ammonia to the ammonia-based desulfurization device through an ammonia metering means and an ammonia control valve, and automatically control the actual ammonia flow rate based on the actual SO2 concentration and a change trend provided by the outlet CEMS.Type: GrantFiled: July 27, 2017Date of Patent: May 22, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jinyong Wang, Jun Zhang
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Patent number: 9962649Abstract: Apparatus and methods for denitrification and desulfurization of and dust removal from an FCC tail gas by an ammonia-based process. The apparatus may include a first-stage waste heat recovery system, a denitrification system, a dust removal and desulfurization system, a tail gas exhaust system, and an ammonium sulfate post-processing system. The dust removal and desulfurization system may include a dedusting tower and an absorption tower disposed separately. The top and the bottom of the absorption tower may be connected respectively to the tail gas exhaust system and the ammonium sulfate post-processing system. The absorption tower may include sequentially, from bottom to top, an oxidation section, an absorption section, and a fine particulate control section. The methods may be implemented with the apparatus.Type: GrantFiled: June 9, 2017Date of Patent: May 8, 2018Assignee: Jiangnan Environmental Protection Group Inc.Inventors: Jing Luo, Jun Zhang, Yongying Luo, Qiang Tan, Xiangjun Xu