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公开(公告)号：US20230405521A1
公开(公告)日：2023-12-21
申请号：US18196489
申请日：2023-05-12
发明人： Jun Zhang , Lifang Qi , Jinyong Wang , Jing Luo
CPC分类号： B01D53/78 , B01D53/62 , B01D53/1475 , B01D53/1493 , B01D53/1406 , B01D53/18 , B01D2257/504 , B01D2251/2062 , B01D2258/0283
摘要： Staged absorption ammonia-based decarbonization using an absorption circulating liquid containing ammonium salts to remove carbon dioxide in a gas, and control ammonia escape while realizing efficient decarbonization through staged solution composition control and reaction condition control. Staged solution composition control may include concentration gradient control of ammonium carbonate, ammonium bicarbonate, ammonium carbamate, ammonia, or combinations thereof, which may be characterized by the molar ratio of total ammonia to total CO2. Reaction condition control may include temperature control, pH control, and pressure control. The flue gas may enter the decarbonization tower, and through staged absorption, establishment of concentration, temperature, and multi-point addition of ammonia, decarbonization efficiency may be improved, decarbonization operating costs may be saved, and ammonia escape may be controlled.
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公开(公告)号：US10543451B2
公开(公告)日：2020-01-28
申请号：US16158481
申请日：2018-10-12
发明人： Jing Luo , Jinyong Wang , Jun Zhang
摘要： 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.
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公开(公告)号：US20190358587A1
公开(公告)日：2019-11-28
申请号：US16535355
申请日：2019-08-08
发明人： Jing Luo , Congzhi Zhang , Yongying Luo
摘要： A desulfurization absorption tower, a method for setting up the same and a method for operating the same. The lower 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.
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公开(公告)号：US10413864B2
公开(公告)日：2019-09-17
申请号：US16244562
申请日：2019-01-10
发明人： Jing Luo , Changxiang Xu
摘要： 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.
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公开(公告)号：US10406477B2
公开(公告)日：2019-09-10
申请号：US16160035
申请日：2018-10-15
发明人： Jing Luo , Changxiang Xu
摘要： 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.
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公开(公告)号：US10369517B2
公开(公告)日：2019-08-06
申请号：US16232320
申请日：2018-12-26
发明人： Jing Luo , Lifang Qi , Jinyong Wang
摘要： 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.
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公开(公告)号：US20190232214A1
公开(公告)日：2019-08-01
申请号：US16377497
申请日：2019-04-08
发明人： Jing Luo , Jinyong Wang , Jun Zhang
摘要： Ammonia-adding apparatus and methods for ammonia-based desulfurization use multi-stage control, calculate a theoretical amount 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.
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公开(公告)号：US20190076780A1
公开(公告)日：2019-03-14
申请号：US16188816
申请日：2018-11-13
发明人： Jing Luo , Changxiang Xu , Xiangjun Xu , Yongying Luo
CPC分类号： B01D53/507 , B01D53/504 , B01D53/78 , B01D2251/11 , B01D2252/102 , B01D2258/0283 , Y02A50/2346
摘要： 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.
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公开(公告)号：US10207220B2
公开(公告)日：2019-02-19
申请号：US15481736
申请日：2017-04-07
发明人： Jing Luo , Changxiang Xu
IPC分类号： B01D53/40 , B01D53/50 , B01D53/75 , B01D53/78 , B01D53/96 , B01D51/10 , B01D47/06 , B01D9/00
摘要： 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.
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公开(公告)号：US20180361308A1
公开(公告)日：2018-12-20
申请号：US15953703
申请日：2018-04-16
发明人： Jing Luo , Jingyong Wang , Jun Zhang
IPC分类号： B01D53/14
摘要： 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.
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