CN1090994C - 用于气体反应的催化剂网 - Google Patents
用于气体反应的催化剂网 Download PDFInfo
- Publication number
- CN1090994C CN1090994C CN95104393A CN95104393A CN1090994C CN 1090994 C CN1090994 C CN 1090994C CN 95104393 A CN95104393 A CN 95104393A CN 95104393 A CN95104393 A CN 95104393A CN 1090994 C CN1090994 C CN 1090994C
- Authority
- CN
- China
- Prior art keywords
- astragal
- precious metal
- catalyst
- tissue
- metal network
- 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.)
- Expired - Lifetime
Links
- 239000003054 catalyst Substances 0.000 title abstract description 15
- 238000006243 chemical reaction Methods 0.000 title abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 241001061264 Astragalus Species 0.000 claims description 14
- 239000010970 precious metal Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 5
- 238000009940 knitting Methods 0.000 claims description 3
- 230000035807 sensation Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 7
- 229910000510 noble metal Inorganic materials 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
- C01B21/265—Preparation by catalytic or non-catalytic oxidation of ammonia characterised by the catalyst
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/20—Metallic fibres
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/024—Fabric incorporating additional compounds
- D10B2403/0242—Fabric incorporating additional compounds enhancing chemical properties
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Knitting Of Fabric (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
用贵金属制成的三维针织催化剂网已用于氨氧化和其它气体反应中。如果催化剂网针织成两层或多层，并用起圈线连接各层，则能获得特别高的产量，同时反应过程稳定，催化剂的使用寿命延长。重要的特征是单位面积上的最大可能的起圈线数目和尽可能与气体流动方向平行布置。
Description
本发明涉及一种用于进行气体催化反应的三维针织贵金属网，特别是涉及用于氨和空气催化氧化获得硝酸的三维针织贵金属网。
使用可透气的机织物形贵金属催化剂被证明是一种进行某些催化过程获得最高产量的方法。一个已知的例子是在氨气燃烧生产硝酸使用的铂/铑催化剂网。
催化剂网通常是用细的贵金属丝在织机上生产的。用贵金属丝通过针织生产催化剂网的方法最近在EP-A-0364153中公开了。该文献也提到了三维针织，但没有提及关于这种针织织物结构的进一步的细节。
象所有的催化剂网一样，针织网具有催化表面积大、机械强度高和生产技术简单的优点，然而，在反应期间贵金属的损耗相对大，及与此相关的使用期限短是它的缺点。如果金属丝垂直于反应气体流动方向放置，在金属丝表面的反应过程变得不稳定，同时还有相应的温度波动，导致了反应的非线性过程，并且对产量和网的使用期限有负作用。
本发明的目的是提供一种进行气体反应，特别是用于氨气与空气催化氧化生产硝酸的三维针织贵金属网。它能提高产量并保证反应过程的稳定，同时，使贵金属的损耗最少，延长催化剂网的使用期限。
按照本发明，这一目的是通过两层或多层的针织网用起圈线(Pile-thread)将各层组织(stitch)连接到一起来实现的，在每组织中最多有十根起圈线，起圈线的布置必须与反应气体的流动方向成0-50°的角度。
网最好是这样使用，即在每个组织(stitch)中用二至六根起圈线。起圈线的长度为1-10mm是有利的。如果起圈线在其平行于反应气体流动方向的方向上与流动轴线成0-30°的角度偏差是更有利的，小于15°的角度是最有益的。
这种构造的催化剂网在工业化生产硝酸中能显著地提高产量，在填充反应器时还可能节约贵金属，同时能降低反应器中贵金属的损耗，延长催化剂网的使用期限。意想不到的是，反应期间催化剂网表面的温度波动和过热区域被消除了。
优选使用至少有两层针床的卧式针织机来生产这种催化剂网。通过连接前后针床的组织来产生起圈线。起圈线也可以重复地插入一排组织，以获得每单位面积的高比例的这种线。这样辅助地提高了抗压强度和网的稳定性。对同样的面积/重量，这种网比单个机织或针织布置成两层或多层的网有更好的均匀性。
Claims (4)
1、一种用于进行氨气与空气催化氧化生产硝酸的三维针织贵金属网，其特征在于：该网是两层或多层针织的，用起圈线将各层的组织连接在一起，每组织有1-10根起圈线，起圈线相对于反应气体流动方向以0-50°的角度布置。
2、根据权利要求1的贵金属网，其特征在于：在每组织中有两至六根起圈线。
3、根据权利要求1或2的贵金属网，其特征在于：所述起圈线的长度是1-10mm。
4、根据权利要求1或2所述的贵金属网，其特征在于：起圈线在其平行于反应气体流动方向的方向上与流动轴线是0-30°的角度。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4411774A DE4411774C1 (de) | 1994-04-06 | 1994-04-06 | Katalysatornetze für Gasreaktionen |
| DEP4411774.4 | 1994-04-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1116966A CN1116966A (zh) | 1996-02-21 |
| CN1090994C true CN1090994C (zh) | 2002-09-18 |
Family
ID=6514702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95104393A Expired - Lifetime CN1090994C (zh) | 1994-04-06 | 1995-04-06 | 用于气体反应的催化剂网 |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0680787B1 (zh) |
| JP (1) | JP3774744B2 (zh) |
| CN (1) | CN1090994C (zh) |
| AT (1) | ATE175134T1 (zh) |
| BR (1) | BR9501433A (zh) |
| CZ (1) | CZ289818B6 (zh) |
| DE (2) | DE4411774C1 (zh) |
| ES (1) | ES2127956T3 (zh) |
| NO (1) | NO307987B1 (zh) |
| PL (1) | PL178774B1 (zh) |
| RU (1) | RU2095135C1 (zh) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002254889A1 (en) * | 2001-02-08 | 2002-08-19 | Omg Ag And Co. Kg | Three-dimensional catalyst gauzes knitted in two or more layers |
| DE10105624A1 (de) * | 2001-02-08 | 2002-10-02 | Omg Ag & Co Kg | Dreidimensionale, zwei-oder mehrlagig gestrickte Katalysatormetze für Gasreaktionen |
| CN100398200C (zh) * | 2005-11-23 | 2008-07-02 | 贵研铂业股份有限公司 | 氨氧化用铂合金针织催化网 |
| DE102007034715A1 (de) | 2007-07-23 | 2009-01-29 | Evonik Röhm Gmbh | Reaktor zur Herstellung von Cyanwasserstoff nach dem Andrussow-Verfahren |
| EP2202201B1 (en) * | 2008-12-23 | 2016-04-20 | Clariant Prodotti (Italia) SpA | Ammonia oxidation catalysts |
| DE102011016044A1 (de) | 2011-04-04 | 2012-10-04 | Jens Kopatsch | Verfahren zur Herstellung von Formdrähten mit hoher Drahtoberfläche und Katalysatornetzen aus Formdrähten |
| DE102020120927B4 (de) | 2020-08-07 | 2024-01-25 | Jens Kopatsch | Verfahren zur Herstellung von Netzen mit Tertiärstruktur zur katalytischen Umsetzung von Fluiden |
| EP4215662B1 (de) * | 2022-01-24 | 2024-06-12 | Heraeus Precious Metals GmbH & Co. KG | Verfahren zur herstellung von edelmetallnetzen auf flachstrickmaschinen |
| DE202024101437U1 (de) | 2024-03-22 | 2024-03-28 | Umicore Ag & Co. Kg | Gestrickte Netzpackung für die Ammoniakumsetzung |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0364153A1 (en) * | 1988-10-12 | 1990-04-18 | Johnson Matthey Public Limited Company | Metal fabrics |
| WO1992002301A1 (en) * | 1990-07-31 | 1992-02-20 | Alan Edward Heywood | Improvements in or relating to catalysts and getter systems |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829035A1 (de) * | 1978-07-01 | 1980-01-10 | Heraeus Gmbh W C | Katalysator aus metallfasern, verfahren zur herstellung des katalysators und verwendung des katalysators |
| EP0061304A1 (en) * | 1981-03-18 | 1982-09-29 | Johnson Matthey Public Limited Company | Three dimensional interstitial catalyst support, its manufacture and use |
| GB9016788D0 (en) * | 1990-07-31 | 1990-09-12 | Heywood Alan E | Improvements in or relating to self-gettering catalysts |
| DE4206199C1 (zh) * | 1991-03-16 | 1992-11-12 | Degussa Ag, 6000 Frankfurt, De |
-
1994
- 1994-04-06 DE DE4411774A patent/DE4411774C1/de not_active Expired - Fee Related
-
1995
- 1995-03-21 DE DE59504661T patent/DE59504661D1/de not_active Expired - Lifetime
- 1995-03-21 AT AT95104114T patent/ATE175134T1/de not_active IP Right Cessation
- 1995-03-21 EP EP95104114A patent/EP0680787B1/de not_active Expired - Lifetime
- 1995-03-21 ES ES95104114T patent/ES2127956T3/es not_active Expired - Lifetime
- 1995-04-04 BR BR9501433A patent/BR9501433A/pt not_active IP Right Cessation
- 1995-04-04 JP JP07919695A patent/JP3774744B2/ja not_active Expired - Lifetime
- 1995-04-05 CZ CZ1995861A patent/CZ289818B6/cs not_active IP Right Cessation
- 1995-04-05 NO NO951323A patent/NO307987B1/no not_active IP Right Cessation
- 1995-04-05 PL PL95308005A patent/PL178774B1/pl unknown
- 1995-04-05 RU RU9595104893A patent/RU2095135C1/ru active
- 1995-04-06 CN CN95104393A patent/CN1090994C/zh not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0364153A1 (en) * | 1988-10-12 | 1990-04-18 | Johnson Matthey Public Limited Company | Metal fabrics |
| US5188813A (en) * | 1988-10-12 | 1993-02-23 | Johnson Matthey Public Limited Company | Metal fabrics |
| WO1992002301A1 (en) * | 1990-07-31 | 1992-02-20 | Alan Edward Heywood | Improvements in or relating to catalysts and getter systems |
Also Published As
| Publication number | Publication date |
|---|---|
| NO951323L (no) | 1995-10-09 |
| JP3774744B2 (ja) | 2006-05-17 |
| CZ86195A3 (en) | 1995-11-15 |
| EP0680787A1 (de) | 1995-11-08 |
| PL178774B1 (pl) | 2000-06-30 |
| DE4411774C1 (de) | 1995-08-17 |
| NO307987B1 (no) | 2000-07-03 |
| ATE175134T1 (de) | 1999-01-15 |
| CZ289818B6 (cs) | 2002-04-17 |
| RU2095135C1 (ru) | 1997-11-10 |
| ES2127956T3 (es) | 1999-05-01 |
| CN1116966A (zh) | 1996-02-21 |
| PL308005A1 (en) | 1995-10-16 |
| RU95104893A (ru) | 1997-01-27 |
| EP0680787B1 (de) | 1998-12-30 |
| DE59504661D1 (de) | 1999-02-11 |
| BR9501433A (pt) | 1996-06-04 |
| NO951323D0 (no) | 1995-04-05 |
| JPH07275705A (ja) | 1995-10-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DEGUSSA-HUELS AG Free format text: FORMER OWNER: DEGUSSA Effective date: 20030801 Owner name: DEGUSSA Free format text: FORMER OWNER: DEGUSSA-HUELS AG Effective date: 20030801 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20030801 Address after: Dusseldorf, Federal Republic of Germany Patentee after: DEGUSSA AG Address before: Federal Republic of Germany, Frankfurt on the riverside Patentee before: DEGUSSA-HuLS AG Effective date of registration: 20030801 Address after: Federal Republic of Germany, Frankfurt on the riverside Patentee after: DEGUSSA-HuLS AG Address before: Frankfurt, Federal Republic of Germany Patentee before: Degussa AG |
|
| ASS | Succession or assignment of patent right |
Owner name: UMICORE AG & CO. KG Free format text: FORMER OWNER: DEGUSSA Effective date: 20070413 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070413 Address after: German - Wolfgang Hanau Patentee after: Umicore AG & Co. KG Address before: Dusseldorf, Federal Republic of Germany Patentee before: Degussa AG |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150406 Granted publication date: 20020918 |