CN2796822Y - Isothermal bed reactor used for catalytic reaction - Google Patents
Isothermal bed reactor used for catalytic reaction Download PDFInfo
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- CN2796822Y CN2796822Y CN 200520042771 CN200520042771U CN2796822Y CN 2796822 Y CN2796822 Y CN 2796822Y CN 200520042771 CN200520042771 CN 200520042771 CN 200520042771 U CN200520042771 U CN 200520042771U CN 2796822 Y CN2796822 Y CN 2796822Y
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Abstract
The utility model relates to an isothermal bed reactor for catalytic reaction, which mainly solves the problems that a fixed bed device can not keep good heat stability, the filling of catalysts is complicated, and the catalysts easily enter a post-processing system of the device in original technology. By adopting the technical scheme that the reactor comprises a raw material inlet 5, a product outlet 6 and a reactor shell body 7, wherein a catalyst bed 4 is arranged in the reactor shell body 7, and a metal cylinder body 1 is arranged at the lower surface of the catalyst bed 4 in the reactor shell body 7; the ratio of the length L2 of the metal cylinder body 1 to the length L1 of the reactor is L2: L1 = 1: 3 to 5, which preferably solves the problems. The utility model can be used for the industry evaluation of the catalysts.
Description
Technical field
The utility model relates to a kind of isothermal bed bioreactor that is used for catalytic reaction.
Background technology
In petrochemical industry, reactor is the formant equipment in the technological process, industrial main at present adopt two types of reactors, i.e. fixed bed (axial flow reactor, radial reactor etc.) and thermopnore (fluidized reactor, moving-burden bed reactor etc.).But general the employing is the fixed bed isothermal reactor in experimental rig.Owing to be subjected to the restriction of other technologies, substantially all be micro-reactor in the past, equipment and control are simpler, easily remove stage makeup and costume, easy to operate, but reactor volume is too little, require the particle diameter of catalyst less, influence factors such as the diffusion of catalyst and fluid distribution are just had no way of investigating, and then catalyst is amplified and the research of process exploitation just can't be carried out, therefore can only be as catalyst Primary Study stage-catalyst screening research use.
Along with science and technology development, mostly adopt a kind of single tube reactor flow process at present, be used for the exploitation and the mould examination research of catalyst.But this technological process is the flow process of analoging industrial device basically, and reactor amplifies, and makes its granularity that can investigate industrial employed catalyst, and can further investigate the situation that fluid distributes, thereby makes the research work of catalyst have more practicality.
In the single tube reactor technological process, reactor is its core.Though the reactor of existing various types, but based on fixing isothermal bed bioreactor.There is following defective in the situation of just present isothermal bed bioreactor:
1, the heat endurance of reactor is relatively poor, and the constant temperature zone in the reactor is shorter, thereby makes beds can not be in constant temperature zone fully, simultaneously, because reaction itself has heat release or endothermic effect, can influence the temperature of reaction bed more, entire reaction is not an isothermal reaction just like this, and be subject to the foeign element influence, the variations in temperature of bed is bigger, and so, catalyst is investigated the accuracy of data, stability, repeatability is relatively poor.
2, this device is used for the catalyst investigation, and the loading and unloading catalyst is more frequent, and the catalyst that has will be examined or check several in one day, even will load and unload catalyst under the bed temperature condition with higher.According to the method for present loading catalyst, be about to the reactor upper flange and open, pack into filler and catalyst, this packing method has not only increased working strength and working time, and has also increased filling difficulty and potential safety hazard sometimes.In addition, many pads are frequently not only wasted in removing stage makeup and costume of flange, and flange face is had damage, and are unfavorable, to the course of reaction of mesohigh, then more unfavorable especially to the sealing property of device.
3, because the loading and unloading catalyst is more frequent; also can produce another problem; exactly when unloading catalyst; owing to bump in the dropping process of catalyst; the particle that often has catalyst enters the reactor discharging opening; to such an extent as to be brought into after-treatment system, generally understand blocking filter, serious situation can be damaged the control elements such as control valve of back system.
A kind of fixed bed reactors that are used for catalytic reaction have been introduced among the document Chinese patent CN1225850.It comprises a reaction vessel hollow, sealing, and container has a product inlet and a product outlet, and wherein at least a portion container is surrounded by cooling collar, and sleeve pipe has a cooling medium inlet and a cooling medium outlet.The purpose of this invention is a kind of catalytic fixed bed reactor that is used for exothermic reaction, the catalyst volume of catalytic fixed bed reactor is wherein increased, thereby make to be reflected at a bigger time of staying is arranged in the reactor, also have the conversion that lower temperature obtains to expect simultaneously.
A kind of handling method and capital equipment thereof of fixed bed reactor catalyst have been introduced among the document Chinese patent CN1140628.This method of inventing described loading, unloading catalyst is meant that employing is the loading, unloading antigravity system that critical piece is formed by grain sucting tube, loads and draw off the catalyst of diameter≤15 millimeter or the process of filler particles.The arrival end of its capital equipment grain sucting tube has the flat tooth at 120 ° at each interval of three circumference, is used for dredging the reaction tube catalyst particles and builds bridge, and removes catalyst granules bonding, wall built-up and clogging.
All do not relate to the problem that keeps the reaction bed isothermal in the above-mentioned document, the catalyst loading and unloading system architecture is still complicated in addition, still easily blocks during operation.
Summary of the invention
Technical problem to be solved in the utility model be in the conventional art in the past fixed bed device can not keep thermostability preferably, catalyst filling trouble, the problem of the easy access to plant after-treatment system of catalyst provides a kind of new isothermal bed bioreactor that is used for catalytic reaction.This reactor has Heat stability is good, catalyst convenient filling, the not susceptible to plugging advantage of device after-treatment system.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows: a kind of isothermal bed bioreactor that is used for catalytic reaction, comprise feed(raw material)inlet 5, product outlet 6 and reactor shell 7, beds 4 is set in the reactor shell 7, wherein below reactor shell 7 inner catalyst beds 4, metal cylinder 1 is set, the length L of metal cylinder 1
2With reactor length L
1Ratio L
2: L
1=1: 3～5, the diameter D of metal cylinder 1
2With reactor inside diameter D
1Difference be 0.5～5 centimetre.
In the technique scheme, the preferred version of metal cylinder 1 is the coaxial metal cylinder of different-diameter up and down, the epimere diameter D of metal cylinder 1
3With reactor inside diameter D
1Difference be 1～10 centimetre, the hypomere diameter is D
2, the length L of metal cylinder 1 epimere
3Be metal cylinder 1 length L
25～30%, the diameter D of metal cylinder 1
2With reactor inside diameter D
1Difference be 0.5～2 centimetre.The epimere diameter D of metal cylinder 1
3With reactor inside diameter D
1Difference be 1～5 centimetre, the length L of metal cylinder 1 epimere
3Be metal cylinder 1 length L
210～20%.Below the beds 4, the top preferred version of metal cylinder is for being equipped with Web materials 9; Above the beds 4, the top preferred version of reactor is oblique installation one cylindrical duct, and cylindrical duct axially becomes 20 °～80 ° angle α with reactor, and the preferable range of angle α is 30 °～60 °.
In the utility model, hypomere at reactor, install down the metal cylinder of different-diameter, be attached on the lower flange, can eliminate the influence of cooling effect to greatest extent like this, reach and adopt less temperature control heat block, can obtain long constant temperature zone constant temperature zone in the reactor, simultaneously, can play the effect of supporting filler again.Filling at catalyst, cylindrical duct of oblique installation on the top of reactor, directly link on the reactor, cylindrical duct is most of exposes outside, is not subjected to the influence of heating-up temperature, different according to the shape of catalyst and particle diameter and proportion, the angle of cylindrical duct and reactor is required different, the angle a that generally requires cylindrical duct and reactor is at 20 °～80 °, 30 °～60 ° of preferable range, thereby make catalyst when filling, keep evenly can not influencing the investigation result of catalyst.At the susceptible to plugging situation of device after-treatment system, the utility model is by below beds 4, the technical scheme of Web materials 9 (semi-circular network structure) is installed above the metal cylinder, can prevent in unloading the catalyst process, catalyst is brought after-treatment system into, the situation of blocking filter takes place, and has solved the problems referred to above preferably, has obtained better technical effect.
Description of drawings
Fig. 1 is former reactor.
Fig. 2 is the isothermal bed bioreactor that is used for catalytic reaction of the present utility model.
Among Fig. 1,1 is metal cylinder, and 3 is filter, and 4 is beds, and 5 are the reactor feedstocks inlet, and 6 is the reactor discharging opening, and 7 is reactor shell.
Among Fig. 2,1 is the metal cylinder of different-diameter up and down, and 2 is the catalyst charge door, and 3 is filter, and 4 is beds, and 5 is the reactor feedstocks charging aperture, and 6 is the reactor discharging opening, and 7 is reactor shell, and 8 is space reactor, and 9 is Web materials.D
1Be reactor inside diameter, D
2Be the diameter of metal cylinder 1, D
3Be the epimere diameter of metal cylinder 1, L
1Be reactor length, L
2Be the length of metal cylinder 1, L
3Length for metal cylinder 1 epimere.
Reaction raw materials enters reactor through reactor feedstocks charging aperture 5, issues biochemical reaction in certain process conditions, and reacted product is system after reactor discharging opening 6 enters.
Below by embodiment the utility model is further elaborated.
The specific embodiment
[comparative example 1]
At former reactor Fig. 1, adopt three sections temperature control heat blocks, constant temperature zone length reaches 6 centimetres, and the temperature difference is 1 ℃.The catalyst of removing stage makeup and costume needs two people to carry out, and just can finish with about 30 minutes, and influence sealing effectiveness.The plugged filter phenomenon will take place after moving February in device, change filter, long-time running, and system discovery catalyst dust behind reactor often damages Liquid level adjusting valve.
[embodiment 1]
Use this reactor at the toluene disproportionation device, adopt three sections temperature control heat blocks, constant temperature zone length reaches 15 centimetres, and the temperature difference is less than 0.5 ℃.People catalyst of removing stage makeup and costume only needed about 15 minutes, and device through the operation half a year plugged filter phenomenon does not take place, and catalyst granules and dust are not seen by system yet behind reactor.
Claims (7)
1, a kind of isothermal bed bioreactor that is used for catalytic reaction, comprise feed(raw material)inlet (5), product outlet (6) and reactor shell (7), beds (4) is set in the reactor shell (7), it is characterized in that below reactor shell (7) inner catalyst bed (4), being provided with metal cylinder (1), the length L of metal cylinder (1)
2With reactor length L
1Ratio L
2: L
1=1: 3～5, the diameter D of metal cylinder (1)
2With reactor inside diameter D
1Difference be 0.5～5 centimetre.
2,, it is characterized in that the diameter D of metal cylinder (1) according to the described isothermal bed bioreactor that is used for catalytic reaction of claim 1
2With reactor inside diameter D
1Difference be 0.5～2 centimetre.
3,, it is characterized in that metal cylinder (1) is the coaxial metal cylinder of different-diameter up and down, the epimere diameter D of metal cylinder (1) according to the described isothermal bed bioreactor that is used for catalytic reaction of claim 2
3With reactor inside diameter D
1Difference be 1～10 centimetre, the hypomere diameter is D
2, the length L of metal cylinder (1) epimere
3Be metal cylinder (1) length L
25～30%.
4,, it is characterized in that the epimere diameter D of metal cylinder (1) according to the described isothermal bed bioreactor that is used for catalytic reaction of claim 3
3With reactor inside diameter D
1Difference be 1～5 centimetre, the length L of metal cylinder (1) epimere
3Be metal cylinder (1) length L
210～20%.
5, according to the described isothermal bed bioreactor that is used for catalytic reaction of claim 1, it is characterized in that beds (4) below, the top installation Web materials (9) of metal cylinder.
6, according to the described isothermal bed bioreactor that is used for catalytic reaction of claim 1, it is characterized in that beds (4) above, oblique installation one cylindrical duct in the top of reactor, cylindrical duct axially becomes 20 °～80 ° angle α with reactor.
7,, it is characterized in that the axial angle α of cylindrical duct and reactor is 30 °～60 ° according to the described isothermal bed bioreactor that is used for catalytic reaction of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042771 CN2796822Y (en) | 2005-06-22 | 2005-06-22 | Isothermal bed reactor used for catalytic reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042771 CN2796822Y (en) | 2005-06-22 | 2005-06-22 | Isothermal bed reactor used for catalytic reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2796822Y true CN2796822Y (en) | 2006-07-19 |
Family
ID=36868060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042771 Expired - Lifetime CN2796822Y (en) | 2005-06-22 | 2005-06-22 | Isothermal bed reactor used for catalytic reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2796822Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536065A (en) * | 2019-09-20 | 2021-03-23 | 中国石油化工股份有限公司 | Method for preparing propylene by propane dehydrogenation |
-
2005
- 2005-06-22 CN CN 200520042771 patent/CN2796822Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536065A (en) * | 2019-09-20 | 2021-03-23 | 中国石油化工股份有限公司 | Method for preparing propylene by propane dehydrogenation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150622 Granted publication date: 20060719 |