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GB2406802A - Reactor incorporating a filter system - Google Patents

Reactor incorporating a filter system Download PDF

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Publication number
GB2406802A
GB2406802A GB0321267A GB0321267A GB2406802A GB 2406802 A GB2406802 A GB 2406802A GB 0321267 A GB0321267 A GB 0321267A GB 0321267 A GB0321267 A GB 0321267A GB 2406802 A GB2406802 A GB 2406802A
Authority
GB
United Kingdom
Prior art keywords
reactor
layer
fibres
filter
filter material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0321267A
Other versions
GB0321267D0 (en
Inventor
Christopher Joseph Withers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CALDO ENVIRONMENTAL ENGINEERIN
Original Assignee
CALDO ENVIRONMENTAL ENGINEERIN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CALDO ENVIRONMENTAL ENGINEERIN filed Critical CALDO ENVIRONMENTAL ENGINEERIN
Priority to GB0321267A priority Critical patent/GB2406802A/en
Publication of GB0321267D0 publication Critical patent/GB0321267D0/en
Publication of GB2406802A publication Critical patent/GB2406802A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B01D53/8609—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8634—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/248—Reactors comprising multiple separated flow channels
    • B01J19/2485—Monolithic reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/248—Reactors comprising multiple separated flow channels
    • B01J19/2495—Net-type reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/005—Separating solid material from the gas/liquid stream
    • B01J8/006—Separating solid material from the gas/liquid stream by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0242—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid flow within the bed being predominantly vertical
    • B01J8/025—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid flow within the bed being predominantly vertical in a cylindrical shaped bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
    • B01J8/0446—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical
    • B01J8/0449—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical beds
    • B01J8/0453—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical beds the beds being superimposed one above the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20723—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00796—Details of the reactor or of the particulate material
    • B01J2208/00884—Means for supporting the bed of particles, e.g. grids, bars, perforated plates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Catalysts (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A reactor incorporating a filter system comprises a reactor vessel (3) having a first end (5) and a second end (7). A body of catalytic material (9) and at least one layer of filter material (11) is provided within the reactor vessel (3). The filter system is arranged such that a stream of gas entering the reactor vessel (3) at the first end (5) passes through the at least one layer of filter material (11) and the body of catalytic material (9) prior to the gas exiting the reactor vessel at the second end (7). The filter layer may be before or after the catalytic material and may comprise a pluraty of sections adjacent to each other. The filter material is in the form of a paper, felt, board, or blanket and is composed of refractory fibres chosen from metal, mineral wool or ceramic fibres. The catalytic material may be granular, monolithic or mesh form.

Description

REACTOR INCORPORATING A FILTER SYSTEM
This invention relates to a reactor incorporating a filter system, in particular a filter system comprising catalytic material.
It is known in high temperature, gas phase reactor vessels to use catalytic material to speed up reactions or increase reaction yields. For example a V2O5 catalyst is used to oxidize SO2 to SO3 at approximately 400 degrees Celsius, in the production of sulphuric acid, and a platinum/rhodium catalyst is used for the oxidation of NH3 at approximately 800 degrees Celsius, in the formation of nitric acid.
Typically, catalytic material is in the form of granules, although catalytic materials in the form of monolithic ceramics and metallic meshes are also known. The catalytic material is typically arranged in the form of a fixed bed of solid catalytic material through which gases are passed.
Often, a reactor vessel is arranged such that gas is passed vertically down through the catalyst bed. In such a case, if the gas contains particulate material, the particulate material will accumulate on the upper face (inlet) of the catalyst bed. The particulate material can also accumulate within the body of the catalyst bed.
In many cases, the gases used in gas phase reactor vessels are generated hot. It is both a waste of energy and time consuming to cool the gases to enable solid particles present within a gas stream to be removed. Means provided externally to the reactor vessel, for example electrostatic precipitators, can be used which remove the particulate material from gases at high temperature. However such means can suffer from relatively poor efficiency and/or breakthrough.
Generally, the size of the particulate material contained within a gas stream is relatively small and consequently the particulate material can relatively quickly accumulate and pack together on the inlet, and within the body, of the catalyst bed. As a result, the pressure required to force the particulate material through the catalyst bed increases rapidly. Normally, there is access to the inlet of the catalyst bed to enable the removal of the accumulated particulate material. However, in order to gain access the reactor vessel must be shut down.
One method of removing the accumulated particulate material from the inlet of the catalyst bed is by means of vacuuming the surface of the catalyst bed. However, this method is relatively inefficient and eventually the catalyst bed must be removed and cleaned, for example by sieving. l. - 3
In some reactions, for example during the oxidation of SO2 to S03, it is important that particulate material, for example arsenic, should not come into contact with the catalyst bed as it can poison the catalytic material.
There is, therefore, a demand for a system which overcomes these various disadvantages.
It is an object of the present invention to provide a filter system to minimise or prevent the accumulation of particulate material in contact with the catalytic material.
According to the present invention there is provided a reactor incorporating a filter system and comprising: a reactor vessel having a first end and a second end; a body of catalytic material provided within the reactor vessel; and at least one layer of filter material provided within the reactor vessel; wherein the filter system is arranged such that a stream of gas entering the reactor vessel at the first end passes through the at least one layer of filter material and the body of catalytic material prior to the gas exiting the reactor vessel at the second end.
I. b, - 4 - The at least one layer of filter material may be provided between the first end of the reactor vessel and the body of catalytic material. The at least one layer of filter material may be in contact with the catalytic material.
Alternatively, the at least one layer of filter material may be supported a distance away from the catalytic material between the body of catalytic material and the first end of the reactor vessel.
The at least one layer of filter material may comprise fibres, processed into a planar form, for example as paper, felt, board or blanket.
The fibres may have a nominal diameter in a range from 1 micron to 10 micron, preferably in a range from 1 micron to 4 micron.
The fibres may be refractory fibres, for example refractory metal fibres, mineral wool and/or ceramic fibres.
The ceramic fibres may be blown, spun or extruded ceramic fibres.
The ceramic fibres may comprise alumina nominally in a range from 30 to 97 per cent by weight, and silica nominally in a range from 3 to 70 per cent by weight. e - 5
The at least one layer of filter material may comprise a plurality of sections, preferably in a co-planar arrangement and adjacent to one another.
The at least one layer of filter material may comprise a plurality of layers of filter material superimposed on top of one another.
The at least one layer of filter material may be disposable.
The body of catalytic material may have granular form, be a monolithic ceramic or have a mesh form, for example a metal mesh form.
For a better understanding of the present invention and to show more clearly how it may be carried into effect reference will now be made, by way of example, to the accompanying drawings in which: Figure 1 is a cross-sectional view of a first embodiment of a filter system in accordance with the present invention; Figure 2 is a plan view of one embodiment of a layer of filter material of the filter system in Figure 1; - 6 - Flqure 3 is a cross-sectional view of a second embodiment of a filter system in accordance with the present invention; Figure 4 is a cross- sectional view of a third embodiment of a filter system in accordance with the present invention; and Figure 5 is a cross-sectional view of a fourth embodiment of a filter system in accordance with the present invention.
Figure 1 shows a filter system 1 comprising a reactor vessel 3 having an elongate cylindrical body. The reactor vessel 3 has a first end 5 and a second end 7 and contains therein a body of catalytic material 9 and a layer of filter material 11.
The catalytic material 9 is supported from beneath by an arrangement of ceramic and/or metal beams 13 attached to the reactor vessel 3. The catalytic material extends substantially across the full internal crosssectional area of the reactor vessel. The catalytic body comprises a granular catalyst arranged in the form of a fixed body of solid material. - 7
The layer of filter material 11 is provided directly onto the uppermost surface of the catalytic material 9 covering substantially the full surface area of the catalytic material 9.
The layer of filter material is in the form of a planar felt of ceramic fibres, the fibres being nominally in a range from 1 to 10 micron in diameter, and preferably in a range from 1 to 4 micron in diameter.
The ceramic fibres can be made by spinning, blowing or extrusion methods as known to a person skilled in the art.
The ceramic fibres typically comprise alumina in a nominal range from 30 to 97 per cent by weight, and silica in a nominal range from 3 to 70 per cent by weight.
In use, a stream of high temperature gas is passed under pressure into the reactor vessel via the first (upper) end 5. The gas passes through the layer of filter material and into the body of catalytic material before exiting the reactor vessel via the second (lower) end 7. As the gas passes through the catalytic material, the gas and catalytic material react to produce desired gaseous reaction products. 8 -
The layer of filter material acts as a barrier which substantially prevents particulate material entrained in the gas stream from coming into contact with the catalytic material and accumulating in contact with the catalytic material. As such, particulate material which can poison and destroy a catalytic material, for example arsenic in the sulphur dioxide process, cannot come into contact with the catalytic body, thus preventing damage.
When the pressure drop across the layer of filter material increases to an unacceptable value due to the accumulation of the particulate material on the layer of filter material, the reactor vessel can be shut down and the existing layer of filter material can be removed and replaced by a new layer of filter material.
Provided in the wall of the rector vessel is an openable aperture (not shown), for example a manway of nominally 600 mm diameter, through which a person can enter the reactor vessel. The reactor vessel is also provided with some freeboard, nominally 150 to 300 mm, between the top of the catalytic material and the aperture.
It is therefore possible for a person to completely enter the reactor vessel to replace the layer of filter material. i - 9 -
However, such an action is potentially unsafe and should be avoided where possible.
Therefore, by using the aforementioned aperture a person positioned substantially outside the reactor vessel can remove and replace an existing layer of filter material.
The existing layer of filter material can be rolled up, preferably placed in a container to prevent exposure to the accumulated particulate material, and removed without the need to completely enter the reactor vessel. A new layer of filter material can be placed in position on the surface of the catalytic position in a rolled, pleated, folded or furled form and then opened out into position. By means of the use of elongate tools, the layer of filter material can be positioned as required by the person positioned outside the reactor vessel.
If the cross-sectional area of the reactor vessel is too large for the positioning of a single piece layer of filter material, the layer of filter material can be made up of sections (11') of filter material, for example in the form of strips, unrolled individually and positioned substantially in contact adjacent to one another to cover substantially the full surface area of the catalytic material, as shown in Figure 2. i.
Although a filter system in accordance with the present invention has been described in which a single layer of filter material is positioned on the catalytic material, it should be appreciated that a plurality of layers of filter material could be provided, for example, between the first end of the reactor vessel and the catalytic material, as shown in Figure 3. When the layer closest to the first end of the reactor is causing an undesirable pressure drop within the system it can be removed to reveal a lower layer of filter material which does not have an accumulation of particulate material on its surface. In this way it is possible to regenerate a desirable pressure drop across the filter material. Ideally, the removal of the layer of filter material closest to the first end of the reactor would be carried out without the need to shut down the reactor vessel.
Although the layer of filter material has been described as being in contact with the body of catalytic material, it should be appreciated that, for example as shown in Figure 4, at least one layer of filter material could be provided between the body of catalytic material and the first end of the reactor vessel but be supported a distance away from the catalytic material. - 11
Although the layer of filter material has been described as being in the form of a ceramic felt, it should be appreciated that other planar forms, for example of paper, board or blanket forms of ceramic fibres may be used. It should also be appreciated that other types of fibre, for example refractory metal fibres and/or mineral wool, can be used to form the layer of filter material. The fibres required to form the layer of filter material preferably need to be resistant to, for example, high temperatures, chemically active gases and/or chemically active liquids.
It should also be appreciated that, for example as shown in Figure 5, at least one layer of filter material could be provided within the body of the catalytic material, for example where contact between the particulate matter within a stream of gas and the catalytic material would not lead to the poisoning of the catalytic material. Such a layer of filter material within the catalytic body would be arranged to trap any particulate material that does enter the catalytic body and substantially prevent the particulate material passing completely through the catalytic body.
It should also be appreciated that, although the figures show the filter vessel in a substantially vertical arrangement, a filter system in accordance with the present - 12 invention could comprise a reactor vessel arranged in a variety of orientations.

Claims (23)

1. A reactor incorporating a filter system and comprising: a reactor vessel having a first end and a second end; a body of catalytic material provided within the reactor vessel; and at least one layer of filter material provided within the reactor vessel; wherein the filter system is arranged such that a stream of gas entering the reactor vessel at the first end passes through the at least one layer of filter material and the body of catalytic material prior to the gas exiting the reactor vessel at the second end.
2. A reactor as claimed in claim 1, wherein the at least one layer of filter material is provided between the first end of the reactor vessel and the body of catalytic material.
3. A reactor as claimed in claim 1 or 2, wherein the at least one layer of filter material is in contact with the catalytic material.
4. A reactor as claimed in claim 1 or 2, wherein the at least one layer of filter material is supported a distance away from the catalytic material between the body of - 14 catalytic material and the first end of the reactor vessel.
5. A reactor as claimed in any preceding claim, wherein the at least one layer of filter material comprises fibres, processed into a planar form.
6. A reactor as claimed in claim 5, wherein the planar form is as paper, felt, board or blanket.
7. A reactor as claimed in claim 5 or 6, wherein the fibres have a nominal diameter in a range from 1 micron to micron.
8. A reactor as claimed in claim 7, wherein the fibres have a nominal diameter in a range from 1 micron to 4 micron.
9. A reactor as claimed in any one of claims 5 to 8, wherein the fibres are refractory fibres.
10. A reactor as claimed in claim 9, wherein the refractory fibres are refractory metal fibres.
11. A reactor as claimed in claim 9 or 10, wherein the refractory fibres are mineral wool fibres.
12. A reactor as claimed in claim 9, 10 or 11, wherein the refractory fibres are ceramic fibres.
13. A reactor as claimed in claim 12, wherein the ceramic fibres are blown, spun or extruded ceramic fibres.
14. A reactor as claimed in claim 12 or 13, wherein the ceramic fibres comprise alumina nominally in a range from to 97 per cent by weight, and silica nominally in a range from 3 to 70 per cent by weight.
15. A reactor as claimed in any preceding claim, wherein the at least one layer of filter material comprises a plurality of sections.
16. A reactor as claimed in claim 15, wherein the plurality of sections are in a co-planar arrangement and adjacent to one another.
17. A reactor as claimed in any preceding claim, wherein the at least one layer of filter material comprises a plurality of layers of filter material superimposed on top of one another.
18. A reactor as claimed in any preceding claim, wherein the at least one layer of filter material is disposable. - 16
19. A reactor as claimed in any preceding claim, wherein the body of catalytic material has granular form.
20. A reactor as claimed in any one of claims 1 to 18, wherein the body of catalytic material is a monolithic ceramic material.
21. A reactor as claimed in any one of claims 1 to 18, wherein the body of catalytic material has a mesh form.
22. A reactor as claimed in claim 21, wherein the mesh form is a metal mesh form.
23. A reactor incorporating a filter system being substantially as hereinbefore described with reference to, and as shown in, the accompanying drawings.
GB0321267A 2003-09-11 2003-09-11 Reactor incorporating a filter system Withdrawn GB2406802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0321267A GB2406802A (en) 2003-09-11 2003-09-11 Reactor incorporating a filter system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0321267A GB2406802A (en) 2003-09-11 2003-09-11 Reactor incorporating a filter system

Publications (2)

Publication Number Publication Date
GB0321267D0 GB0321267D0 (en) 2003-10-08
GB2406802A true GB2406802A (en) 2005-04-13

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GB0321267A Withdrawn GB2406802A (en) 2003-09-11 2003-09-11 Reactor incorporating a filter system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103395A1 (en) * 2008-02-21 2009-08-27 Uhde Gmbh Fixing device for catalyst particles
EP2202201A1 (en) * 2008-12-23 2010-06-30 SÜD-CHEMIE CATALYSTS ITALIA S.r.l. Ammonia oxidation catalysts
CN107866191A (en) * 2016-09-26 2018-04-03 中石化洛阳工程有限公司 Filter plant in fixed bed hydrogenation reactor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114699910B (en) * 2022-04-24 2022-11-22 江苏天新环保科技有限公司 Biological filter device beneficial to filler replacement and deodorization and use method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1314874A (en) * 1969-04-18 1973-04-26 Uhde Gmbh Friedrich Capture of metals using filters
JPS5326261A (en) * 1976-08-24 1978-03-10 Kobe Steel Ltd Treating method for exhaust gas
GB1538198A (en) * 1974-12-12 1979-01-10 Fisons Ltd Device and process for the oxidation of ammonia
GB2188559A (en) * 1986-03-14 1987-10-07 Drache Keramikfilter Exhaust gas reactor
WO1991010496A1 (en) * 1990-01-18 1991-07-25 International Fuel Cells Corporation Catalytic reactor for gas phase reactions
EP0819459A1 (en) * 1996-07-15 1998-01-21 Kubota Corporation Sintered metal filters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1314874A (en) * 1969-04-18 1973-04-26 Uhde Gmbh Friedrich Capture of metals using filters
GB1538198A (en) * 1974-12-12 1979-01-10 Fisons Ltd Device and process for the oxidation of ammonia
JPS5326261A (en) * 1976-08-24 1978-03-10 Kobe Steel Ltd Treating method for exhaust gas
GB2188559A (en) * 1986-03-14 1987-10-07 Drache Keramikfilter Exhaust gas reactor
WO1991010496A1 (en) * 1990-01-18 1991-07-25 International Fuel Cells Corporation Catalytic reactor for gas phase reactions
EP0819459A1 (en) * 1996-07-15 1998-01-21 Kubota Corporation Sintered metal filters

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101909739B (en) * 2008-02-21 2014-07-30 犹德有限公司 Fixing device for catalyst particles
EA019310B1 (en) * 2008-02-21 2014-02-28 Уде Гмбх Fixing device for catalyst particles
KR101590200B1 (en) 2008-02-21 2016-01-29 티센크루프 인더스트리얼 솔루션스 아게 Fixing device for catalyst particles
WO2009103395A1 (en) * 2008-02-21 2009-08-27 Uhde Gmbh Fixing device for catalyst particles
KR20100122897A (en) * 2008-02-21 2010-11-23 우데 게엠베하 Fixing device for catalyst particles
CN101909739A (en) * 2008-02-21 2010-12-08 犹德有限公司 Fixing device for catalyst particles
US8303904B2 (en) 2008-02-21 2012-11-06 Uhde Gmbh Fixing device for catalyzer particles
US8435917B2 (en) 2008-12-23 2013-05-07 Sued-Chemie Catalysts Italia S.R.L. Ammonia oxidation catalysts
EP2202201A1 (en) * 2008-12-23 2010-06-30 SÜD-CHEMIE CATALYSTS ITALIA S.r.l. Ammonia oxidation catalysts
JP2010149116A (en) * 2008-12-23 2010-07-08 Sud-Chemie Catalysts Italia Srl Ammonia oxidation catalyst
KR20100074004A (en) * 2008-12-23 2010-07-01 슈드-케미 캐터리스트 이탈리아 에스.알.엘. Ammonia oxidation catalysts
KR101671822B1 (en) 2008-12-23 2016-11-02 슈드-케미 캐터리스트 이탈리아 에스.알.엘. Ammonia oxidation catalysts
US10125020B2 (en) 2008-12-23 2018-11-13 Sued-Chemie Catalysts Italia S.Rl. Ammonia oxidation catalysts
CN107866191A (en) * 2016-09-26 2018-04-03 中石化洛阳工程有限公司 Filter plant in fixed bed hydrogenation reactor
CN107866191B (en) * 2016-09-26 2020-06-23 中石化洛阳工程有限公司 Filtering equipment in fixed bed hydrogenation reactor

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Publication number Publication date
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