公开(公告)号：US1943855A

公开(公告)日：1934-01-16

申请号：US45946630

申请日：1930-06-06

申请人： GEN CHEMICAL CORP

发明人： CARTER BERNARD M

IPC分类号： C01B17/80

CPC分类号： C01B17/806 ,  Y10S165/178 ,  Y10S165/905

公开(公告)号：US1543488A

公开(公告)日：1925-06-23

申请号：US68641324

申请日：1924-01-15

申请人： TODD WILLIAM O

发明人： TODD WILLIAM O

IPC分类号： C01B17/80

CPC分类号： C01B17/80

公开(公告)号：US1529997A

公开(公告)日：1925-03-17

申请号：US60720222

申请日：1922-12-15

申请人： GRASSELLI CHEMICAL CO

发明人： HENRY HOWARD

IPC分类号： C01B17/80

CPC分类号： C01B17/806

公开(公告)号：US1358050A

公开(公告)日：1920-11-09

申请号：US26958319

申请日：1919-01-04

申请人： PAUL AUDIANNE

发明人： PAUL AUDIANNE

IPC分类号： C01B17/80

CPC分类号： C01B17/806

公开(公告)号：US11807527B2

公开(公告)日：2023-11-07

申请号：US17606607

申请日：2020-04-29

申请人： HALDOR TOPSØE

发明人： Morten Thellefsen ,  Martin Møllerhøj ,  Mads Lykke

IPC分类号： C01B17/04 ,  C01B17/76 ,  C01B17/80 ,  B01D53/14 ,  B01D53/86 ,  F23G7/06 ,  C01B17/02 ,  B01J19/00 ,  B01J19/24 ,  C01B17/775

CPC分类号： C01B17/0404 ,  B01D53/1481 ,  B01D53/1493 ,  B01D53/8615 ,  B01J19/0013 ,  B01J19/2405 ,  B01J19/2465 ,  C01B17/0253 ,  C01B17/0447 ,  C01B17/0452 ,  C01B17/0456 ,  C01B17/76 ,  C01B17/775 ,  C01B17/80 ,  C01B17/806 ,  F23G7/06 ,  B01D2255/20723 ,  B01J2219/00157 ,  C01P2006/80 ,  F23G2209/14

摘要： A process and a process plant for production of elemental sulfur from a feedstock gas including from 15 vol % to 100 vol % H2S and a stream of sulfuric acid, the process including a) providing a Claus reaction furnace feed stream with a substoichiometric amount of oxygen, b) directing s to a reaction furnace operating at elevated temperature, c) cooling, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elemental sulfur, f) directing to a means for sulfur oxidation, g) directing to contact a material catalytically active in SO2 oxidation to SO3, h) converting to concentrated sulfuric acid, i) recycling to the Claus reaction furnace, wherein an amount of combustibles, in the Claus tail gas, is oxidized in the presence of a material catalytically active in sulfur oxidation, at an inlet temperature below 400° C.

公开(公告)号：US11440798B2

公开(公告)日：2022-09-13

申请号：US17413953

申请日：2019-11-21

申请人： KEYON PROCESS CO., LTD ,  Rui Huang

发明人： Rui Huang ,  Dan Wang ,  Huayong Zhang ,  Yuan Zhang ,  Junling Qi

IPC分类号： C01B17/79 ,  C01B17/80

摘要： Disclosed is a process system and a process for converting the sulfur-containing flue gas into the sulfuric acid. The process system comprises: a flue gas preheater, which for preheating the sulfur-containing flue gas to 15˜30° C. above its dew point, and the flue gas preheater has a glass tube as a heat exchange tube; a flue gas fan for boosting the pressure of the preheated acid process gas and transporting one part of which to a combustion furnace, and the other part of which to a process gas steam heater; a sulfuric acid steam condenser for condensing SO3 generated by the combined reactor into sulfuric acid. The device of the present invention can resist the fluctuation of SO2 concentration in the feed gas, and can realize considerable economic benefits and rational utilization of energy.

公开(公告)号：US20220227625A1

公开(公告)日：2022-07-21

申请号：US17606642

申请日：2020-04-29

申请人： HALDOR TOPSØE A/S

发明人： Morten THELLEFSEN ,  Mads LYKKE

IPC分类号： C01B17/775 ,  C01B17/04 ,  C01B17/80 ,  B01J19/24 ,  B01J19/00

摘要： A process for production of elemental sulfur from a feedstock gas including from 15% to 100 vol % H2S and a stream of sulfuric acid, the process including: a) providing a Claus reaction furnace feed stream substoichiometric oxygen with respect to the Claus reaction, b) directing to a reaction furnace zone operating at elevated temperature such as above 900° C., c) directing to a sulfuric acid evaporation zone downstream said reaction furnace zone, d) cooling to provide a cooled Claus converter feed gas, e) directing to contact a material catalytically active in the Claus reaction, f) withdrawing a Claus tail gas and elemental sulfur, g) directing to a Claus tail gas treatment plant, with the associated benefit of a process involving injection of sulfuric acid in a sulfuric acid evaporation zone allowing high temperature combustion of said feedstock gas, including impurities, without cooling from evaporation and decomposition of sulfuric acid.

公开(公告)号：US11230472B2

公开(公告)日：2022-01-25

申请号：US16932718

申请日：2020-07-18

申请人： Pingxiang Huaxing Environmental Protection Engineering Technology Co., Ltd

发明人： Ping Ning ,  Bo Li ,  Chuan Wang ,  Kai Li ,  Xin Song ,  Ruosong Xie ,  Lijuan Jia ,  Xia Wang ,  Guangfei Qu ,  Chan Li

IPC分类号： C01B17/80 ,  C25B1/22 ,  C25B9/10 ,  C25B11/04 ,  C25B11/12 ,  C25B9/23 ,  C25B11/043 ,  C25B11/051 ,  C25B11/061

摘要： The present invention refers to the field of flue gas purification, which discloses a method and apparatus for capturing carbon dioxide and producing sulfuric acid by sodium bisulfate; using a three-format electrodialysis apparatus to convert the desulfurized by-product NaHSO4 into H2SO4 while capturing CO2 in the flue gas in the cathode chamber. Under the action of electric field drive and ion exchange membrane, HSO4− enters the anode chamber to generate H2SO4 and is concentrated, and Na+ enters the cathode chamber to generate NaOH; the flue gas containing CO2 to be treated is introduced from the cathode chamber and absorbed by NaOH. The invention provides a simple, green, and economic proceeding method to capture the carbon dioxide in the flue gas during the comprehensive utilization of sodium bisulfate solution, which is of better environmental benefits and improvement of the flue gas treatment technology and reducing the pressure of desulfurization gypsum treatment.

公开(公告)号：US20210371282A1

公开(公告)日：2021-12-02

申请号：US16932718

申请日：2020-07-18

申请人： Pingxiang Huaxing Environmental Protection Engineering Technology Co., Ltd

发明人： PING NING ,  BO LI ,  CHUAN WANG ,  KAI LI ,  XIN SONG ,  RUOSONG XIE ,  LIJUAN JIA ,  XIA WANG ,  GUANGFEI QU ,  CHAN LI

IPC分类号： C01B17/80 ,  C25B1/22 ,  C25B11/04 ,  C25B11/12 ,  C25B9/10

摘要： The present invention refers to the field of flue gas purification, which discloses a method and apparatus for capturing carbon dioxide and producing sulfuric acid by sodium bisulfate; using a three-format electrodialysis apparatus to convert the desulfurized by-product NaHSO4 into H2SO4 while capturing CO2 in the flue gas in the cathode chamber. Under the action of electric field drive and ion exchange membrane, HSO4− enters the anode chamber to generate H2SO4 and is concentrated, and Na+ enters the cathode chamber to generate NaOH; the flue gas containing CO2 to be treated is introduced from the cathode chamber and absorbed by NaOH. The invention provides a simple, green, and economic proceeding method to capture the carbon dioxide in the flue gas during the comprehensive utilization of sodium bisulfate solution, which is of better environmental benefits and improvement of the flue gas treatment technology and reducing the pressure of desulfurization gypsum treatment.

公开(公告)号：US10858251B2

公开(公告)日：2020-12-08

申请号：US16082223

申请日：2017-03-02

申请人： THYSSENKRUPP INDUSTRIAL SOLUTIONS AG ,  thyssenkrupp AG

发明人： Holger Thielert ,  Zion Guetta

IPC分类号： C01B17/775 ,  C01B17/765 ,  C01B17/80

摘要： A process for preparing sulfuric acid may involve oxidizing sulfur to sulfur dioxide by way of dried air in a first oxidation stage. The sulfur dioxide may then be oxidized to sulfur trioxide in a second oxidation stage. The sulfur trioxide may be absorbed by sulfuric acid in at least one absorption stage. Further, heated sulfuric acid may be drawn off from the absorption stage and used for generating steam. Process gas from an intermediate absorption stage may be recycled to the second oxidation stage and, in some cases, a final absorption stage after the process gas flows through the second oxidation stage.