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1. 发明公开

EP2678270A1 VERFAHREN ZUR BESEITIGUNG VON N2O UND NOX AUS DEM PROZESS ZUR SALPETERSÄUREHERSTELLUNG UND DAFÜR GEEIGNETE ANLAGE 有权转让
标题翻译：程序的去除NOx N2O和过程OUT硝酸生产和合适的投资
公开(公告)号：EP2678270A1
公开(公告)日：2014-01-01
申请号：EP12706771.8
申请日：2012-02-14
申请人： ThyssenKrupp Uhde GmbH
发明人： SCHWEFER, Meinhard , SIEFERT, Rolf , FUCHS, Jürgen , RUTHARDT, Klaus , GROVES, Michael
IPC分类号： C01B21/26 , C01B21/38 , B01D53/86
CPC分类号： C01B21/40 , B01D53/8628 , B01D53/869 , B01D2255/2065 , B01D2255/20738 , B01D2255/20746 , B01D2255/20761 , B01D2255/502 , B01D2255/504 , B01D2257/402 , B01D2257/404 , B01J29/072 , B01J29/46 , B01J29/68 , B01J29/7615 , B01J2229/42 , C01B21/265 , C01B21/38 , Y02C20/10 , Y02P20/153
摘要： The invention relates to a method for producing nitric acid by catalytically oxidising NH
3 with oxygen and then reacting the obtained ΝΟ
x with an absorption agent in an absorption tower, said tower comprising a catalyst bed for N
2 O decomposition arranged in the process gas after the catalytic NH
3 oxidation and before the absorption tower in the direction of flow, and a catalyst bed for ΝΟ
x reduction and further N
2 O reduction, arranged in the residual gas after the absorption tower in the direction of flow. In the catalyst bed for N
2 O decomposition that is arranged in the process gas, as much N
2 O as possible is broken down such that before the residual gas enters the catalyst bed for ΝΟ
x reduction, the N
2 O content is at > 100 ppmv and a molar N
2 O/ΝΟ
x ratio of > 0.25 is the result; the catalyst bed for ΝΟ
x reduction and further N
2 O reduction, arranged in the residual gas, containing at least one zeolite catalyst loaded with iron; there being such an amount of NH
3 added to the residual gas prior to entry into the catalyst bed that upon exit from the catalyst bed, an ΝΟ
x concentration of 2 O concentration of 2 O, formed during the catalytic NH
3 oxidation, is catalytically removed in the process gas, with the ΝΟ
x content being reduced and the N
2 O content being further reduced in the residual gas, downstream of the absorption tower, and which is characterised in that at least the following elements are present: A) a reactor for the catalytic oxidation of NH
3 with oxygen to produce a process gas containing ΝΟ
x , B) an absorption tower for reacting the obtained ΝΟ
x from the process gas with an absorption agent, a residual gas containing ΝΟ
x and N
2 O being the result, C) at least one first catalyst bed for N
2 O decomposition through which the process gas flows and which is arranged after the catalytic NH
3 oxidation and before the absorption tower in the direction of flow, D) at least one second catalyst bed for ΝΟ
x reduction and further N
2 O reduction, through which the residual gas flows and which is arranged after the absorption tower in the direction of flow, E) at least one device, for feeding a gaseous reduction agent into the residual gas, arranged after the absorption tower and before the second catalyst bed in the direction of flow, F) the first catalyst bed containing a catalyst for decomposing N
2 O, and G) the second catalyst bed containing a catalyst which contains at least one zeolite loaded with iron. The method and installation allow N
2 O and ΝΟ
x emissions from nitric acid installations to be reduced in a particularly efficient manner.

2. 发明授权

EP1515791B1 VERFAHREN UND VORRICHTUNG ZUR VERRINGERUNG DES GEHALTS AN NOX UND N2O IN GASEN 有权转让
标题翻译：方法和设备降低NOx和N2O气体中的含量
公开(公告)号：EP1515791B1
公开(公告)日：2011-08-03
申请号：EP03735591.4
申请日：2003-06-10
申请人： Uhde GmbH
发明人： SCHWEFER, Meinhard , GROVES, Michael , SIEFERT, Rolf , MAURER, Rainer
IPC分类号： B01D53/86 , B01J8/04 , B01J8/02 , B01J19/30 , B01J29/06
CPC分类号： B01J29/7007 , B01D53/8628 , B01D2255/20738 , B01D2255/50 , B01D2257/402 , B01D2257/404 , B01J8/008 , B01J8/0411 , B01J8/0415 , B01J8/0453 , B01J29/08 , B01J29/14 , B01J29/18 , B01J29/24 , B01J29/46 , B01J29/65 , B01J29/68 , B01J29/7615 , B01J2208/00539 , B01J2208/00849 , B01J2208/025 , Y02C20/10
摘要： The method comprises the following steps: conduction of the gas containing N2O and NOx over a series of two catalyst beds consisting of one or more zeolites charged with iron; addition of a reduction agent for NOx between the catalyst beds; setting of a temperature of less than 500 °C in the first and second catalyst bed; setting of a gas pressure of at least 2 bar in the two catalyst beds; and the selection of a space velocity in the first and second catalyst bed that achieves a degradation of the N2O content of the gas in the first catalyst bed by a maximum of up to 90 %, in relation to the N2O content at the entrance to the catalyst bed and an additional degradation of the N2O content of the gas in the second catalyst bed by at least 30 % in relation to the N2O content at the entrance to the second catalyst bed. The first reaction zone is used to degrade the N2O and the second reaction zone reduces the NOx and breaks down at least part of the remaining N2O. The inventive device comprises at least one radially traversed catalyst bed.

3. 发明公开

EP1881867A1 VERFAHREN ZUR VERRINGERUNG DES GEHALTES AN STICKOXIDEN IN GASEN 有权
标题翻译：一种用于减少氮氧化物气体中的含量
公开(公告)号：EP1881867A1
公开(公告)日：2008-01-30
申请号：EP06742714.6
申请日：2006-04-27
申请人： Uhde GmbH
发明人： SCHWEFER, Meinhard , SIEFERT, Rolf , GROVES, Michael
IPC分类号： B01D53/86
CPC分类号： B01D53/8628 , B01D2251/202 , B01D2251/204 , B01D2251/2062 , B01D2251/208 , B01D2255/20738 , B01D2255/50 , B01D2257/402 , B01D2257/404 , Y02C20/10
摘要： According to the inventive method, a gas containing N2O and NOx is conducted across a series of two catalyst beds, and reducing agent for NOx and N2O is added between the catalyst beds at an amount that causes a predetermined percentage of N2O to be reduced in addition to NOx. The reaction conditions are adjusted such that the N2O concentration of the gas is decomposed by a maximum of 95 percent relative to the N2O concentration at the inlet of the first catalyst bed by being broken down into nitrogen and oxygen while the N2O is chemically reduced in addition to the NOx in the second catalyst bed such that the N2O concentration of the gas is reduced by a minimum of 50 percent relative to the N2O concentration at the inlet of the second catalyst bed.

4. 发明授权

EP1497014B1 ENTSTICKUNGSVERFAHREN 有权转让
标题翻译：脱硝
公开(公告)号：EP1497014B1
公开(公告)日：2006-06-07
申请号：EP03712069.8
申请日：2003-03-21
申请人： Uhde GmbH
发明人： SCHWEFER, Meinhard , GROVES, Michael
IPC分类号： B01D53/86
CPC分类号： B01D53/8625 , B01D2251/202 , B01D2251/204 , B01D2251/208 , B01D2255/20738 , B01D2255/50 , B01D2257/402 , B01D2257/404 , Y02C20/10
摘要： Disclosed is a method for reducing the content of NOx and N2O in gases, especially in process gases and off gases, comprising the following steps: a) at least one reducing agent containing nitrogen is added to the gas containing NOx and N2O in an amount required for at least full reduction of the NOx; b) a hydrocarbon from carbon monoxide, hydrogen or a mixture of one or several of said gases is added to the gas containing NOx and N2O for the reduction the N2O; and c) the gas mixture is guided into at least one reaction zone with temperatures of up to 450 DEG C, containing one or several zeolites loaded with iron. The method can especially be used in the production of nitre in off gases from power plants or in gas turbines.

5. 发明公开

EP2373578A1 VORRICHTUNG UND VERFAHREN FÜR KATALYTISCHE GASPHASENREAKTIONEN SOWIE DEREN VERWENDUNG 审中-公开
标题翻译： VORRICHTUNG UND VERFAHRENFÜRKATALYTISCHE GASPHASENREAKINGEN SOWIE DEREN VERWENDUNG
公开(公告)号：EP2373578A1
公开(公告)日：2011-10-12
申请号：EP09767960.9
申请日：2009-12-01
申请人： Uhde GmbH
发明人： SCHWEFER, Meinhard , GROVES, Michael , FUCHS, Jürgen , MAURER, Rainer , SIEFERT, Rolf , HÜNDGEN, Bernhard
IPC分类号： C01B21/20 , B01J8/00 , B01J8/02 , B01J19/00 , B01J12/00 , B01J15/00
CPC分类号： B01J8/0285 , B01J8/008 , B01J8/025 , B01J8/0278 , B01J12/007 , B01J15/005 , B01J19/0013 , B01J19/002 , B01J19/2485 , B01J19/26 , B01J2208/00203 , B01J2208/00212 , B01J2208/00495 , B01J2208/00548 , B01J2208/00716 , B01J2219/00083 , B01J2219/00094 , B01J2219/00119 , B01J2219/00155 , B01J2219/00164 , B01J2219/00245 , B01J2219/32296 , B01J2219/324 , C01B21/26 , C01B21/267 , C01B21/28 , C01C3/022
摘要： The invention relates to improved reactors for catalytic, exothermal gas phase reactions having an entrance zone (1), a reaction zone (2) comprising at least one catalyst (4) and an outlet zone (3) for the product gas, viewed in the flow direction of a reactant gas comprising at least one oxidizing agent and at least one component to be oxidized. The reactors have means, such as insulating jackets (6) and/or devices for transporting coolant, at least in the region of the entrance zone (1), wherein said coolants reduce the transport of heat generated in the reaction zone (2) into the entrance zone (1) and thus reduce the risks of advanced ignition of the reactant gas mixture used or the development of undesired secondary reactions in the entrance zone (1) and/or wherein the inside walls of the reactor are designed from inert material, at least in the region of the entrance zone (1). The reactant gas enters the entrance zone (1) as a homogenous gas mixture, with regard to the material composition thereof, via one or more supply lines (30). The reactors can be used particularly for ammonia oxidation, such as in nitric acid systems, in which preferably honeycombed transition metal catalysts having small cross-sections are used as the platinum nets that are conventionally employed.
摘要翻译：改进的反应器，用于在进料气体的流动方向上看到催化，放热气相反应，其包含至少一种氧化剂和至少一种待氧化的组分，入口区域（1），反应区域（2）描述了至少一种用于产品气体的催化剂（4）和出口区（3）。至少在入口区域（1）的区域中的反应器具有例如绝缘套（6）和/或用于输送冷却剂的装置的装置，其减少反应区（2）中产生的热量的传输）进入入口区（1），从而降低进料区（1）中所采用的进料气体混合物的预点燃或不期望的副反应过程的风险，和/或其中反应器的内壁在至少在进入区域（1）的区域，由惰性材料制成。进料气体通过一个或多个进料管线（30）相对于其物质组合物作为均匀气体混合物进入入口区域（1）。反应器可以特别用于氨氧化，例如在硝酸设备中，其中使用优选以蜂窝形式形成的过渡金属催化剂，其具有比通常使用的铂网格更小的横截面。

6. 发明公开

EP2160236A1 VORRICHTUNG UND VERFAHREN FÜR KATALYTISCHE GASPHASENREAKTIONEN SOWIE DEREN VERWENDUNG 有权转让
标题翻译： DEVICE AND METHOD FOR气相反应催化氨及其用途
公开(公告)号：EP2160236A1
公开(公告)日：2010-03-10
申请号：EP08758816.6
申请日：2008-05-28
申请人： Uhde GmbH
发明人： SCHWEFER, Meinhard , GROVES, Michael , FUCHS, Jürgen , MAURER, Rainer , SIEFERT, Rolf , HÜNDGEN, Bernhard
IPC分类号： B01J8/00 , B01J8/02 , B01J15/00 , B01J19/00 , C01B21/26 , C01B21/28
CPC分类号： B01J8/008 , B01J8/02 , B01J8/025 , B01J8/0278 , B01J8/0285 , B01J15/005 , B01J19/002 , B01J2208/00176 , B01J2208/00203 , B01J2208/00212 , B01J2208/00495 , B01J2208/0053 , B01J2208/00716 , B01J2219/00006 , B01J2219/00263 , B01J2219/025 , C01B21/265 , C01B21/28
摘要： The invention relates to improved reactors for catalytic, exothermic gas phase reactions having an entry zone (1), a reaction zone (2) comprising at least one catalyst (4), and an exit zone (3) for the product gas, as viewed in the flow direction of a reactant gas. The reactors have means in the region of the entry zone (1), or the entry zone (1) and the reaction zone (2), such as insulating jackets (6) and/or devices for transporting coolant, reducing the transport of heat from the reaction zone (2) into the entry zone (1), and thus the risks of pre-ignition of the reactant gas mixture used or the triggering of undesired secondary reactions in the entry zone (1), and/or the interior walls of the reactor in the area of the entry zone (1), or in the area of the entry zone (1) and the reaction zone (2), being made of an inert material. The reactors can be used in particular for ammonia oxidation, such as in nitric acid production systems, in which preferably honeycomb-shaped transition metal catalysts having smaller cross sections than the typically used platinum meshes are used.

7. 发明公开

EP1497014A1 ENTSTICKUNGSVERFAHREN 有权转让
标题翻译：脱硝
公开(公告)号：EP1497014A1
公开(公告)日：2005-01-19
申请号：EP03712069.8
申请日：2003-03-21
申请人： Uhde GmbH
发明人： SCHWEFER, Meinhard , GROVES, Michael
IPC分类号： B01D53/86
CPC分类号： B01D53/8625 , B01D2251/202 , B01D2251/204 , B01D2251/208 , B01D2255/20738 , B01D2255/50 , B01D2257/402 , B01D2257/404 , Y02C20/10
摘要： Disclosed is a method for reducing the content of NOx and N2O in gases, especially in process gases and off gases, comprising the following steps: a) at least one reducing agent containing nitrogen is added to the gas containing NOx and N2O in an amount required for at least full reduction of the NOx; b) a hydrocarbon from carbon monoxide, hydrogen or a mixture of one or several of said gases is added to the gas containing NOx and N2O for the reduction the N2O; and c) the gas mixture is guided into at least one reaction zone with temperatures of up to 450 °C, containing one or several zeolites loaded with iron. The method can especially be used in the production of nitre in off gases from power plants or in gas turbines.

8. 发明授权

EP2576019B1 VERFAHREN UND VORRICHTUNG ZUR BESEITIGUNG VON NOX UND N2O 有权转让
标题翻译：方法和设备的去除NOx和N2O
公开(公告)号：EP2576019B1
公开(公告)日：2014-12-24
申请号：EP11723248.8
申请日：2011-05-09
申请人： ThyssenKrupp Uhde GmbH
发明人： SCHWEFER, Meinhard , GROVES, Michael , PERBANDT, Christian , SIEFERT, Rolf
IPC分类号： B01D53/86 , B60L1/00 , B60L11/18 , B66F9/075 , B01J29/072 , B01J29/46 , B01J37/00
CPC分类号： B01D53/869 , B01D53/8628 , B01D53/8631 , B01D2255/20738 , B01D2255/50 , B01D2255/504 , B01D2257/402 , B01J29/072 , B01J29/46 , B01J37/0009 , Y02C20/10

9. 发明授权

EP2678270B1 VERFAHREN ZUR BESEITIGUNG VON N2O UND NOX AUS DEM PROZESS ZUR SALPETERSÄUREHERSTELLUNG UND DAFÜR GEEIGNETE ANLAGE 有权转让
标题翻译：程序的去除NOx N2O和过程OUT硝酸生产和合适的投资
公开(公告)号：EP2678270B1
公开(公告)日：2014-11-26
申请号：EP12706771.8
申请日：2012-02-14
申请人： ThyssenKrupp Uhde GmbH
发明人： SCHWEFER, Meinhard , SIEFERT, Rolf , FUCHS, Jürgen , RUTHARDT, Klaus , GROVES, Michael
IPC分类号： C01B21/26 , C01B21/38 , B01D53/86
CPC分类号： C01B21/40 , B01D53/8628 , B01D53/869 , B01D2255/2065 , B01D2255/20738 , B01D2255/20746 , B01D2255/20761 , B01D2255/502 , B01D2255/504 , B01D2257/402 , B01D2257/404 , B01J29/072 , B01J29/46 , B01J29/68 , B01J29/7615 , B01J2229/42 , C01B21/265 , C01B21/38 , Y02C20/10 , Y02P20/153

10. 发明公开

EP2576019A1 VERFAHREN UND VORRICHTUNG ZUR BESEITIGUNG VON NOX UND N2O 有权转让
标题翻译：方法和设备的去除NOx和N2O
公开(公告)号：EP2576019A1
公开(公告)日：2013-04-10
申请号：EP11723248.8
申请日：2011-05-09
申请人： ThyssenKrupp Uhde GmbH
发明人： SCHWEFER, Meinhard , GROVES, Michael , PERBANDT, Christian , SIEFERT, Rolf
IPC分类号： B01D53/86 , B01J29/072
CPC分类号： B01D53/869 , B01D53/8628 , B01D53/8631 , B01D2255/20738 , B01D2255/50 , B01D2255/504 , B01D2257/402 , B01J29/072 , B01J29/46 , B01J37/0009 , Y02C20/10
摘要： The invention relates to a method for removing N
2 O and NO
x from exhaust gases. The DeNO
x stage is operated downstream of the DeN
2 O stage at inlet temperatures of T 2 O stage contains water and has a selected N
2 O/NO
x ratio. The operating parameters of temperature, pressure, and spatial velocity of the DeN
2 O stage are selected in such a way that an N
2 O decomposition of 80 to 98% results. Under said conditions, the downstream DeNO
x stage can be operated under optimal conditions. The method can be performed in a device that comprises the following elements: A) a device (2) for adjusting the water content of the gas (1) containing NO
x and N
2 O, B) a DeN
2 O stage (3) for reducing the N
2 O content of the gas flow, containing a zeolite catalyst loaded with iron, C) a cooling device (4) for cooling the gas flow (5) leaving the DeN
2 O stage, D) a DeNO
x stage (6) containing an SCR catalyst for reducing the NO
x content of the gas flow, and E) a supply line (7) for introducing reductant for NO
x into the gas flow (5) leaving the DeN
2 O stage.

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