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1. 发明申请

WO2021254627A1 PROCESS AND PLANT FOR THE PRODUCTION OF SULFURIC ACID 审中-公开
公开(公告)号：WO2021254627A1
公开(公告)日：2021-12-23
申请号：PCT/EP2020/066982
申请日：2020-06-18
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , MOHSLER, Stefan , BRÄUNER, Stefan
IPC分类号： C01B17/765 , C01B17/80 , C01B17/806
摘要： A process and its relating plant for producing sulfuric acid by catalytic oxidation of SO2 to SO3 and subsequent absorption of the SO3 in concentrated sulfuric acid in an intermediate and a final absorber stage. Therein, the intermediate absorber stage features a pre-absorber and a post-absorber. These two absorbers arranged such that the not-absorbed SO3 leaving the pre-absorber is supplied to a post-absorber and such that the sulfuric acid leaving the post-absorber is split into two streams of which the first stream is recirculated back in the pre-absorber and the second stream is at least partly passed into the post-absorber. The first stream is uncooled directly injected into the pre-absorber with a temperature between 80 and 200 °C, preferably between 100 and 150°C and the second stream passes a cooling and is at least partly fed into the post-absorber with a temperature between 60 and 90 °C.

2. 发明申请

WO2017016785A1 PROCESS AND APPARATUS FOR COOLING A GAS CONTAINING SO2 AND/OR SO3 AND WATER 审中-公开
标题翻译：用于冷却含SO2和/或SO3和水的气体的方法和装置
公开(公告)号：WO2017016785A1
公开(公告)日：2017-02-02
申请号：PCT/EP2016/065287
申请日：2016-06-30
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , STORCH, Hannes , NEUMANN, Ralf , SCHALK, Wolfram
IPC分类号： C01B17/80 , F28D7/08 , F28D21/00
CPC分类号： C01B17/806 , C01B17/60 , F28D2020/0082 , F28F27/02 , F28F2200/00
摘要： The above mentioned invention describes a process for cooling a gas mixture of SO 2 and/or SO 3 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.
摘要翻译：上述发明描述了用于冷却SO 2和/或SO 3和水的气体混合物的方法，其中通过携带冷却剂的第一热交换器冷却气体混合物。冷却剂的温度高于气体或气体混合物的露点。

3. 发明申请

WO2021249628A1 PLANT AND PROCESS FOR PRODUCING SULFURIC ACID FROM AN OFF-GAS WITH LOW SULFUR DIOXIDE CONTENT 审中-公开
公开(公告)号：WO2021249628A1
公开(公告)日：2021-12-16
申请号：PCT/EP2020/065979
申请日：2020-06-09
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , NEUMANN, Ralf , NURGALIYEVA, Dana , HAMMERSCHMIDT, Jörg , GÜNTNER, Jochen
IPC分类号： C01B17/50 , B01D53/00 , C01B17/56 , C01B17/80 , B01D53/261 , B01D53/265 , C01B17/508 , C01B17/803
摘要： The invention is directed to a plant and its relating method for producing sulfuric acid. It comprises a source (10), wherein ore and/or a gas is thermally treated to produce amongst others a raw gas containing sulfur dioxide with a concentration below 3.5 vol.-%. Further, it contains a blower (122) for the cleaned gas and a converter (160) with at least one stage filled with a catalyst to convert the contained sulfur dioxide into sulfur trioxide. At least one cooling stage (40) is foreseen, which is arranged upstream the blower (122) to cool the gas to a temperature below 30 °C to reduce its water content, as well as a at least one first heat exchanger (150) arranged between blower (122) and converter (160) or inside the converter (160) to heat the gas such that it enters the converter (160) at elevated temperature, preferably with a temperature above 400 °C. Moreover, it contains a second heat exchanger (20), whereby the heat transfer medium of the second heat exchanger (20) is used to heat the first heat exchanger (150).

4. 发明申请

WO2016096867A1 PROCESS AND PLANT FOR IMPROVED ENERGY-EFFICIENT PRODUCTION OF SULFURIC ACID 审中-公开
标题翻译：改善能源生产硫酸的工艺和设备
公开(公告)号：WO2016096867A1
公开(公告)日：2016-06-23
申请号：PCT/EP2015/079809
申请日：2015-12-15
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , ERNST, Peter , STORCH, Hannes , SCHALK, Wolfram
IPC分类号： C01B17/76 , C01B17/80 , C01B17/765
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 SO 2 to SO 3 and subsequent absorption of the SO 3 in sulfuric acid, wherein the SO 3 is introduced into a first absorption stage (primary absorber) and at least partly absorbed there in concentrated sulfuric acid, wherein the SO 3 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.
摘要翻译：本发明描述了通过SO 2催化氧化成SO 3并随后在硫酸中吸收SO 3来生产硫酸的方法，其中SO 3被引入第一吸收级（初级吸收器）中并且至少部分地在浓硫酸中吸收其中未在第一吸收级中吸收的SO 3被供给到用于在浓硫酸中进一步吸收的第二吸收级（二级吸收器），并且其中硫酸在通过两个吸收级之后被冷却。硫酸的冷却是在并联连接的至少两个热交换器中进行的，其中至少两个热交换器之一作为部分蒸发器操作，并用锅炉给水/蒸汽冷却，另一个用冷却水冷却并作为纯酸冷却器运行。

5. 发明申请

WO2021121612A1 A VENTURI ABSORBER TUBE FOR ABSORBING SULFUR TRIOXIDE IN SULFURIC ACID 审中-公开
公开(公告)号：WO2021121612A1
公开(公告)日：2021-06-24
申请号：PCT/EP2019/086448
申请日：2019-12-19
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , BRÄUNER, Stefan
IPC分类号： C01B17/80 , B01D53/14 , C01B17/76 , C01B17/765 , C01B17/7655 , C01B17/806
摘要： The invention relates to a venturi absorber tube for absorbing sulfur trioxide in sulfuric acid. Said venturi features a converging section (20), a throat section (30) and a diverging section (40) as well as a first conduit (21) at its top through which hot pro-cess gas containing sulfur trioxide is introduced. Further, the venturi shows a device for introducing sulfuric acid (22) by spraying sulfuric acid co-currently to the sulfur trioxide gas stream, a conduit (52) to withdraw liquid parts and a conduit (51) to withdraw gaseous parts. As the essential part of the invention, an internal device (60) located in or below the diverging section (40), which is a sieve tray, a multi-venturi array or a self-supporting dome featuring a convex shape.

6. 发明申请

WO2020025105A1 PROCESS AND PLANT FOR THE COMBUSTION OF SULFUR TO SULFUR DIOXIDE 审中-公开
公开(公告)号：WO2020025105A1
公开(公告)日：2020-02-06
申请号：PCT/EP2018/070636
申请日：2018-07-30
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , STORCH, Hannes , BRÄUNER, Stefan
IPC分类号： C01B17/54 , F23D11/00 , F23D14/00
摘要： The invention describes a reactor for the combustion of sulfur. The reactor's walls (23) form a symmetrical base area b, whereby at least two burners (2, 2') are mounted each with a burner holding device (22). All burner holding devices (22) have the same distance to each other and each burner holding device (22) has the same distance to the a center point z of the base area b. At least one burner holding device (22') is arranged such that during operation the flame of said burner (2') shows an angle a between 0 and 45° to a center axis a, which is defined as the shortest connection between this burner holding device (22') and the center point z.

7. 发明申请

WO2019134752A1 PROCESS AND PLANT FOR CLEANING SULFUR DIOXIDE CONTAINING GAS 审中-公开
公开(公告)号：WO2019134752A1
公开(公告)日：2019-07-11
申请号：PCT/EP2018/050318
申请日：2018-01-08
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , HASSELWANDER, Klaus , VOIGT, Ullrich
IPC分类号： B01D53/32 , B01D53/68 , B01D53/75 , C01B17/56 , B01D53/78
摘要： The above mentioned invention describes a process for cleaning SO 2 . In detail, a process gas stream containing at least 1.0 wt.-% SO 2 is quenched prior to passing into a packed bed tower and is then fed into at least one electrostatic precipitator. The condensate from the at least one electrostatic precipitator is separately withdrawn and guided into a effluent water treatment plant.

8. 发明申请

WO2017162857A1 PROCESS AND FACILITY FOR THERMAL TREATMENT OF A SULFUR-CONTAINING ORE 审中-公开
标题翻译：含硫矿石的热处理工艺和设备
公开(公告)号：WO2017162857A1
公开(公告)日：2017-09-28
申请号：PCT/EP2017/057087
申请日：2017-03-24
申请人： OUTOTEC (FINLAND) OY
发明人： STORCH, Hannes , DAUM, Karl-Heinz , HAMMERSCHMIDT, Jörg , BRÄUNER, Stefan , CHARITOS, Alexandros , GÜNTNER, Jochen
IPC分类号： C22B1/02
摘要： The present invention relates to a process for thermal treatment of a sulfur-containing ore in which the ore is calcined at temperatures of between 600 and 1200 °C in the presence of oxygen in a reactor so that between 1 and 90 % by weight of sulfur contained in the ore is burned to sulfur dioxide and impurities contained are driven off in gaseous form. The exhaust gas being produced and containing the sulfur dioxide is fed into a gas purification comprising at least one component and/or the calcined ore is fed into at least one further process stage. An exhaust gas from the gas purification and/or the process stage and/or a gas used for cooling within the gas purification or for cooling within a further process stage is at least partially returned back into the reactor as recycling gas having a temperature of > 100 °C.
摘要翻译：本发明涉及一种热处理含硫矿石的方法，其中矿石在反应器中在氧气存在下在600-1200℃的温度下煅烧，以使得矿石中所含的1至90重量％的硫燃烧成二氧化硫并且所含的杂质以气态形式被驱除。产生并含有二氧化硫的废气被送入包含至少一种组分的气体净化和/或煅烧的矿石被送入至少一个另外的处理阶段。来自气体纯化和/或处理阶段的废气和/或用于在气体纯化或用于进一步处理阶段中的冷却的冷却的气体至少部分地返回到反应器中，作为温度为＆gt的再循环气体 ; 100℃。

9. 发明申请

WO2021089217A1 PROCESS AND PLANT FOR PRODUCING SULPHURIC ACID 审中-公开
公开(公告)号：WO2021089217A1
公开(公告)日：2021-05-14
申请号：PCT/EP2020/074103
申请日：2020-08-28
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , BRÄUNER, Stefan , NEUMANN, Ralf
IPC分类号： C01B17/50 , C01B17/79 , B01J23/22
摘要： A process for producing sulphuric acid, in which a feed gas containing sulphur dioxide and oxygen at least partly reacts in a converter featuring at least one catalyst bed to form sulphur trioxide at a given temperature, and in which the produced sulphur trioxide containing gas introduced into an absorber wherein it is further converted to sulphuric acid, characterized in that - the feed gas to the first catalyst bed is generated by combustion of elemental sulphur with air or oxygen enriched air, and - said feed gas featuring a sulphur dioxide content between 14.0 and 20.0 vol-%, and - said feed gas featuring a molar ratio of oxygen to sulphur dioxide of 0.05

10. 发明申请

WO2015169395A1 PROCESS AND PLANT FOR THE PRODUCTION OF LIQUID ACID 审中-公开
标题翻译：用于生产液体酸的方法和设备
公开(公告)号：WO2015169395A1
公开(公告)日：2015-11-12
申请号：PCT/EP2014/059574
申请日：2014-05-09
申请人： OUTOTEC (FINLAND) OY
发明人： DAUM, Karl-Heinz , STORCH, Hannes , SCHALK, Wolfram
IPC分类号： C01B17/80 , C01B17/88 , B01D53/50
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: (i) feeding liquid acid with a first concentration into a gas purification; (ii) passing a gas through the gas purification such that a second concentration of the liquid acid is reached; (iii) 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 (i)and the liquid acid with the second concentration collected in the second section is at least partially withdrawn as product.
摘要翻译：一种制备液体酸的方法，包括以下步骤：（i）将第一浓度的液体酸进料到气体净化中; （ii）使气体通过气体净化，使得达到第二浓度的液体酸; （iii）从气体净化器的贮槽中取出液体酸，其中气体净化池中的分隔壁被分隔成第一和第二段。将第一部分中收集的液体酸的浓度调节至第一浓度。具有来自第一部分的第一浓度的液体酸至少部分地反馈到步骤（i）中，并且在第二部分中收集的具有第二浓度的液体酸至少部分地作为产物取出。

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