公开(公告)号：US10294105B2

公开(公告)日：2019-05-21

申请号：US15744307

申请日：2016-06-30

申请人： OUTOTEC (FINLAND) OY

发明人： Karl-Heinz Daum ,  Hannes Storch ,  Ralf Neumann ,  Wolfram Schalk

IPC分类号： C01B17/60 ,  C01B17/80 ,  F28F27/02 ,  F28D20/00

摘要： The above mentioned invention describes a process for cooling a gas mixture of SO2 and/or SO3 and water, wherein the gas mixture is cooled by means of a first heat exchanger carrying a coolant. The temperature of the coolant lies above the dew point of the gas or gas mixture.

公开(公告)号：US10150671B2

公开(公告)日：2018-12-11

申请号：US15536234

申请日：2015-12-15

申请人： Outotec (Finland) Oy

发明人： Karl-Heinz Daum ,  Peter Ernst ,  Hannes Storch ,  Wolfram Schalk

IPC分类号： C01B17/74 ,  C01B17/76 ,  C01B17/80 ,  C01B17/765 ,  B01D53/14 ,  C01B17/775 ,  B01D53/50

摘要： The invention describes a process for producing sulfuric acid by catalytic oxidation of SO2 to SO3 and subsequent absorption of the SO3 in sulfuric acid, wherein the SO3 is introduced into a first absorption stage (primary absorber) and at least partly absorbed there in concentrated sulfuric acid, wherein the SO3 not absorbed in the first absorption stage is supplied to a second absorption stage (secondary absorber) for the further absorption in concentrated sulfuric acid, and wherein the sulfuric acid is cooled after passing through the two absorption stages. The cooling of the sulfuric acid is effected in at least two heat exchangers connected in parallel, wherein one of the at least two heat exchangers is operated as partial evaporator and is cooled with boiler feed water/steam and the other one is cooled with cooling water and operated as pure acid cooler.

公开(公告)号：US20170349437A1

公开(公告)日：2017-12-07

申请号：US15536234

申请日：2015-12-15

申请人： Outotec (Finland) Oy

发明人： Karl-Heinz Daum ,  Peter Ernst ,  Hannes Storch ,  Wolfram Schalk

IPC分类号： C01B17/80 ,  B01D53/14 ,  C01B17/775

CPC分类号： C01B17/806 ,  B01D53/1406 ,  B01D53/1481 ,  B01D53/1493 ,  B01D53/507 ,  B01D2252/10 ,  B01D2258/025 ,  B01J2219/00006 ,  C01B17/76 ,  C01B17/7655 ,  C01B17/775 ,  Y02P20/124

摘要： The invention describes a process for producing sulfuric acid by catalytic oxidation of SO2 to SO3 and subsequent absorption of the SO3 in sulfuric acid, wherein the SO3 is introduced into a first absorption stage (primary absorber) and at least partly absorbed there in concentrated sulfuric acid, wherein the SO3 not absorbed in the first absorption stage is supplied to a second absorption stage (secondary absorber) for the further absorption in concentrated sulfuric acid, and wherein the sulfuric acid is cooled after passing through the two absorption stages. The cooling of the sulfuric acid is effected in at least two heat exchangers connected in parallel, wherein one of the at least two heat exchangers is operated as partial evaporator and is cooled with boiler feed water/steam and the other one is cooled with cooling water and operated as pure acid cooler.

公开(公告)号：US09849419B2

公开(公告)日：2017-12-26

申请号：US15308720

申请日：2014-05-09

申请人： OUTOTEC (FINLAND) OY

发明人： Karl-Heinz Daum ,  Hannes Storch ,  Wolfram Schalk

IPC分类号： B01D53/14 ,  B01D53/18 ,  B01D53/50 ,  B01D53/78 ,  C01B17/80 ,  C01B17/88

CPC分类号： B01D53/507 ,  B01D53/1481 ,  B01D53/18 ,  B01D2251/506 ,  C01B17/806 ,  C01B17/88

摘要： A process for the production of liquid acid, comprising the steps of: feeding liquid acid with a first concentration into a gas purification; passing a gas through the gas purification such that a second concentration of the liquid acid is reached; withdrawing the liquid acid from the sump of the gas purification, where in the gas purification sump is divided by a partition wall into a first and a second section. The concentration of the liquid acid collected in the first section is adjusted to the first concentration. The liquid acid with the first concentration from the first section is at least partially fed back into step and the liquid acid with the second concentration collected in the second section is at least partially withdrawn as product.