CN103446956A - Plate type catalytic reactor - Google Patents
Plate type catalytic reactor Download PDFInfo
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- CN103446956A CN103446956A CN2013104116661A CN201310411666A CN103446956A CN 103446956 A CN103446956 A CN 103446956A CN 2013104116661 A CN2013104116661 A CN 2013104116661A CN 201310411666 A CN201310411666 A CN 201310411666A CN 103446956 A CN103446956 A CN 103446956A
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Abstract
The invention relates to a plate type catalytic reactor which mainly solves the problems of poor heat transfer effect, temperature runaway at a local part of a catalyst layer and short service life of a catalyst caused by the adoption of a fixed bed tubular type reactor or a reactor with a circular-arc/elliptic-arc corrugated plate structure in the prior art. A plurality of heat transfer plates are arranged inside the plate type catalytic reactor in parallel at fixed intervals; the concave and convex surfaces of corrugated plates of two adjacent heat transfer plates are oppositely arranged to form a group of heat transfer plates; an internal space formed by the group of heat transfer plates serves as a catalyst filling space; a clearance channel formed between the group of heat transfer plates and the other group of heat transfer plates adjacent to the group of heat transfer plates serves as a heat transfer medium circulating space; the two adjacent groups of heat transfer plates are in staggered arrangement; the convex structure of each heat transfer plate is a polygon of which the number of edges is 2 to 8. By the adoption of the technical scheme, the problems are well solved. The plate type catalytic reactor can be applied to industrial production for chemical products.
Description
Technical field
The present invention relates to a kind of board-like catalytic reactor.
Technical background
Chemical industry is the industry that belongs to knowledge and fund-intensive.Along with scientific and technical development, progressively develop into the production division of a conglomerate, many kinds, the chemical enterprise that large quantities of utilize resources syntheticallies and scale maximize has appearred; Chemical industry is also one of mainstay industry in national economy.Chemical reactor is the core in chemical plant, and current chemical reaction more than 95% completes by catalytic reactor.As: hydrogen peroxide legal system expoxy propane (being called for short the HPPO method) technique genus had just entered the energy saving and environment friendly technology of industrial applications in recent years in the world; Hydrogen peroxide in this technology and the propylene synthetic reaction under catalyst action is the core process in propylene oxide production process, and the course of reaction of this technique is equipped with in the titanium-silicon molecular sieve catalyst calandria type fixed bed reactor and carries out in tubulation at present.
CN 201220569603.X has related to a kind of Novel welding type plate type heat exchanger, it is by being arranged on square four jiaos of corrugated cardboard sheets that symmetrical recessed breach is all arranged, by adjacent two plates half-twist each other, because plate bundle and frame bent plate directly weld, reduce inner space, there is the advantages such as simple and compact for structure, energy-saving and cost-reducing; But this patent only relates to the plank frame of heat exchanger, can't be between heat exchanger plates and heat exchanger plates catalyst filling, therefore can not be applied aspect reactor.
CN 200380100785.X relates to a kind of New-type plate catalytic reactor, by controlling expeditiously the Temperature Distribution in catalyst layer, the board-like catalytic reactor that can expect to improve reaction effect and extending catalyst life-span is provided, but this patent adopts the corrugated sheet structure of circular arc or elliptic arc, although more progressive to some extent than shell and tube reactor, but still there is the heat transfer difficulty in chemical reaction process, catalyst is local, and " temperature runaway " phenomenon easily occurs, thereby causes the problem such as catalyst shortening in service life.
The present invention has solved this problem targetedly.
Summary of the invention
Technical problem to be solved by this invention is that the heat-transfer effect that exists of the waveform plate structure reactor of available technology adopting tubular fixed-bed reactor or circular arc/elliptic arc is poor, the local easy generation of catalyst layer " temperature runaway " phenomenon, the problem that causes catalyst to shorten service life, and a kind of new board-like catalytic reactor is provided.In the industrial production of this reactor for the preparation of chemical products, have advantages of that heat-transfer effect is good, " temperature runaway " phenomenon is few, the catalyst long service life.
For addressing the above problem, the technical solution used in the present invention is as follows: a kind of board-like catalytic reactor, be provided with feed(raw material)inlet, products export, heat transfer medium inlet, heat transfer medium outlet, inside reactor is arranged the polylith heat transfer plate with the spacing parallel arranging ground of fixing, the corrugated sheet concave surface of adjacent two heat transfer plates and the opposed arrangement of convex surface, form one group of heat transfer plate, the inner space that this group heat transfer plate forms is as the catalyst packing space, the interstitial channels formed between described this group heat transfer plate and adjacent another group heat transfer plate is as the heat transfer medium free air space, and two adjacent groups heat transfer plate interlaced arrangement, wherein, the convex configuration of described every heat transfer plate is polygon, and the limit number is 2 ~ 8.
In technique scheme, preferably, described heat transfer plate is fixed on reactor wall by the mode of welding.
In technique scheme, preferably, described heat transfer medium flows direction and raw material flow direction form adverse current.
In technique scheme, preferably, the convex surface of described every heat transfer plate or concave structure are a kind of in triangle, trapezoidal, rectangle, pentagon, hexagon, are more preferably trapezoidal or rectangle.
In technique scheme, preferably, described every heat transfer plate is except the contact of reactor wall weld, and other position does not contact mutually.
In technique scheme, preferably, described catalyst packing space and heat transfer medium free air space are realized isolation by heat exchanger plates.
The board-like catalytic reactor of the high heat transfer efficiency the present invention relates to can effectively improve the heat transfer efficiency of chemical reaction, and its equipment heat transmission resistance is little, rate of heat transfer is fast, and energy saving is from 300～500 w/m of prior art
2k brings up to 1000～2000 w/m
2between k, reduce " temperature runaway " phenomenon, prevent the damage of catalyst hot-spot, thereby extended to 4.0 year from 3.0 years the average life of prior art catalyst, obtained technique effect preferably.
The accompanying drawing explanation
The structural representation that Fig. 1 is reactor of the present invention.
1,2 is heat transfer plate; 3,4 is the catalyst packing space; 5 is the heat transfer medium free air space; 6 is the heat transfer plate group.
Below by embodiment, the invention will be further elaborated, but be not limited only to the present embodiment.
The specific embodiment
[embodiment 1]
The epoxidation reaction that is 100,000 ton/years of HPPO devices for the production of scale by the board-like catalytic reactor of the high heat transfer efficiency that the present invention relates to, adopt titanium-silicon molecular sieve catalyst, in board-like catalytic reactor, the process streams such as propylene, hydrogen peroxide, methyl alcohol are flowed through and are reacted fully between the plate that fills up catalyst.Inside reactor is arranged the polylith heat transfer plate with the spacing parallel arranging ground of fixing, the corrugated sheet concave surface of adjacent two heat transfer plates and the opposed arrangement of convex surface, form one group of heat transfer plate, the inner space that this group heat transfer plate forms is as the catalyst packing space, the interstitial channels formed between this group heat transfer plate and adjacent another group heat transfer plate is as the heat transfer medium free air space, and two adjacent groups heat transfer plate interlaced arrangement.The convex surface of every heat transfer plate or concave structure are trapezoidal.Recirculated cooling water in the heat transfer medium free air space with the reverse flow of process-stream direction, effectively controlled reaction temperature, avoid " temperature runaway " phenomenon, prevent catalyst hot-spot damage.The operating pressure of board-like catalytic reactor is 1.8MPaG; The operating temperature of catalytic reactor is 65 ℃, and the overall heat-transfer coefficient K of reaction is from 300 original w/m
2k brings up to 1500 w/m
2k, extend to 4.0 years the average life of catalyst.
[embodiment 2]
By the board-like catalytic reactor of the high heat transfer efficiency that the present invention relates to, for the production of scale, be 1500 ton/years of Synthesis of Ethylene Glycol by Ethylene Oxide Hydration EO/EG pilot-plants, this catalysis hydration process using organic/inorganic composite material catalyst, can reduce the hydration ratio in charging, improve glycol selectivity.Inside reactor is arranged the polylith heat transfer plate with the spacing parallel arranging ground of fixing, the corrugated sheet concave surface of adjacent two heat transfer plates and the opposed arrangement of convex surface, form one group of heat transfer plate, the inner space that this group heat transfer plate forms is as the catalyst packing space, the interstitial channels formed between this group heat transfer plate and adjacent another group heat transfer plate is as the heat transfer medium free air space, and two adjacent groups heat transfer plate interlaced arrangement.The convex surface of every heat transfer plate or concave structure are rectangle.Recirculated cooling water in the heat transfer medium free air space with the reverse flow of process-stream direction, effectively controlled reaction temperature, avoid " temperature runaway " phenomenon, prevent catalyst hot-spot damage.Feed water composition and division in a proportion value is 8, and the oxirane conversion ratio reaches 99.5%, glycol selectivity 93.0%, and the overall heat-transfer coefficient K of reaction is from 500 original w/m
2k brings up to 1800 w/m
2k, extend to 4.0 years of the present invention the average life of catalyst.
[comparative example 1]
According to the described condition of embodiment 1, due to the specific (special) requirements of HPPO commercial plant to Catalyst packing, can't use the waveform plate structure reactor of circular arc or elliptic arc.The HPPO device adopts tubular fixed-bed reactor, and be 3.0 years the average life of its catalyst.
[comparative example 2]
According to the described condition of embodiment 2, due to the specific (special) requirements of EO/EG pilot-plant to Catalyst packing, can't use the waveform plate structure reactor of circular arc or elliptic arc.The EO/EG pilot-plant, adopt the prior art tubular fixed-bed reactor, and be 3.0 years the average life of its catalyst.
Claims (7)
1. a board-like catalytic reactor, be provided with feed(raw material)inlet, products export, heat transfer medium inlet, heat transfer medium outlet, inside reactor is arranged the polylith heat transfer plate with the spacing parallel arranging ground of fixing, the corrugated sheet concave surface of adjacent two heat transfer plates and the opposed arrangement of convex surface, form one group of heat transfer plate, the inner space that this group heat transfer plate forms is as the catalyst packing space, the interstitial channels formed between described this group heat transfer plate and adjacent another group heat transfer plate is as the heat transfer medium free air space, and two adjacent groups heat transfer plate interlaced arrangement; Wherein, the convex configuration of described every heat transfer plate is polygon, and the limit number is 2 ~ 8.
2. board-like catalytic reactor according to claim 1, is characterized in that described heat transfer plate is fixed on reactor wall by the mode of welding.
3. board-like catalytic reactor according to claim 1, is characterized in that described heat transfer medium flows direction and raw material flow direction form adverse current.
4. board-like catalytic reactor according to claim 1, is characterized in that the convex configuration of described every heat transfer plate or concave surface are a kind of in triangle, trapezoidal, rectangle, pentagon, hexagon.
5. board-like catalytic reactor according to claim 4, is characterized in that the convex surface of described every heat transfer plate or concave structure are trapezoidal or rectangle.
6. board-like catalytic reactor according to claim 1, is characterized in that described every heat transfer plate is except the contact of reactor wall weld, and other position does not contact mutually.
7. board-like catalytic reactor according to claim 1, is characterized in that described catalyst packing space and heat transfer medium free air space realize isolation by heat exchanger plates.
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| CN2013104116661A CN103446956A (en) | 2013-09-11 | 2013-09-11 | Plate type catalytic reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104116661A CN103446956A (en) | 2013-09-11 | 2013-09-11 | Plate type catalytic reactor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105920867A (en) * | 2016-07-08 | 2016-09-07 | 凯瑞环保科技股份有限公司 | Novel catalytic distillation assembly |
| CN106955645A (en) * | 2015-12-17 | 2017-07-18 | 乔治·克劳德方法的研究开发空气股份有限公司 | Reactor for performing heat release or the endothermic reaction |
| CN108368761A (en) * | 2016-10-21 | 2018-08-03 | 康明斯排放处理公司 | Catalyst substrate and filtration device structure including plate and forming method thereof |
| CN110143575A (en) * | 2019-04-22 | 2019-08-20 | 浙江大学 | A kind of ripple substrate-porous metals self-heating type preparing hydrogen by reforming methanol reactor |
| CN117466839A (en) * | 2023-10-07 | 2024-01-30 | 中建安装集团有限公司 | Process for preparing propylene oxide by directly oxidizing propylene with hydrogen peroxide by using flat-plate membrane reactor |
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| CN1128506A (en) * | 1993-07-05 | 1996-08-07 | 帕金诺克斯公司 | Process and apparatus for controlling reaction temperatures |
| CN1694759A (en) * | 2002-12-26 | 2005-11-09 | 三菱化学株式会社 | Plate type catalytic reaction oven |
| JP2010042339A (en) * | 2008-08-11 | 2010-02-25 | Mitsubishi Chemicals Corp | Plate-type reactor |
| JP2010069344A (en) * | 2008-09-16 | 2010-04-02 | Mitsubishi Chemicals Corp | Plate-type reactor |
-
2013
- 2013-09-11 CN CN2013104116661A patent/CN103446956A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128506A (en) * | 1993-07-05 | 1996-08-07 | 帕金诺克斯公司 | Process and apparatus for controlling reaction temperatures |
| CN1694759A (en) * | 2002-12-26 | 2005-11-09 | 三菱化学株式会社 | Plate type catalytic reaction oven |
| JP2010042339A (en) * | 2008-08-11 | 2010-02-25 | Mitsubishi Chemicals Corp | Plate-type reactor |
| JP2010069344A (en) * | 2008-09-16 | 2010-04-02 | Mitsubishi Chemicals Corp | Plate-type reactor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955645A (en) * | 2015-12-17 | 2017-07-18 | 乔治·克劳德方法的研究开发空气股份有限公司 | Reactor for performing heat release or the endothermic reaction |
| CN105920867A (en) * | 2016-07-08 | 2016-09-07 | 凯瑞环保科技股份有限公司 | Novel catalytic distillation assembly |
| CN105920867B (en) * | 2016-07-08 | 2018-08-31 | 凯瑞环保科技股份有限公司 | A kind of new catalytic distillation component |
| CN108368761A (en) * | 2016-10-21 | 2018-08-03 | 康明斯排放处理公司 | Catalyst substrate and filtration device structure including plate and forming method thereof |
| CN110143575A (en) * | 2019-04-22 | 2019-08-20 | 浙江大学 | A kind of ripple substrate-porous metals self-heating type preparing hydrogen by reforming methanol reactor |
| CN117466839A (en) * | 2023-10-07 | 2024-01-30 | 中建安装集团有限公司 | Process for preparing propylene oxide by directly oxidizing propylene with hydrogen peroxide by using flat-plate membrane reactor |
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Application publication date: 20131218 |