CN205700485U - A kind of paste state bed reactor preparing ethylene - Google Patents
A kind of paste state bed reactor preparing ethylene Download PDFInfo
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- CN205700485U CN205700485U CN201620573410.XU CN201620573410U CN205700485U CN 205700485 U CN205700485 U CN 205700485U CN 201620573410 U CN201620573410 U CN 201620573410U CN 205700485 U CN205700485 U CN 205700485U
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Abstract
This utility model relates to a kind of paste state bed reactor preparing ethylene, and described paste state bed reactor includes that housing, heater and sieve plate, the bottom of described housing are provided with reaction gas inlet, liquid flux entrance, liquid outlet；The top of described housing is provided with gas outlet and liquid inlet；Described heater is arranged on the bottom in described housing；Described sieve plate is positioned at described housing, is fixed in described inner walls, is positioned under described liquid inlet, on described reaction gas inlet, described liquid flux entrance.The paste state bed reactor for preparing ethylene by selective hydrogenation of acetylene that this utility model provides, its gas phase and liquid phase entirety present the direction of adverse current, increase the effect of mass transfer and heat transfer.Owing to reactor having multiple sieve plate, increase the contact area that gas-liquid-solid three-phase is fully contacted, improve gas-liquid flow field distribution, it is to avoid fluid flows to short circuit, but also can strengthen turbulence and gas-liquid mass transfer, the quality fluidized in improving reactor.
Description
Technical field
This utility model generally relates to paste state bed reactor, is specifically related to a kind of paste state bed reactor preparing ethylene.
Background technology
Ethylene is a kind of important basic material in modern industry, is also one of maximum chemicals of world wide production, and it produces
Product are widely used in the fields such as national economy, people's lives, national defence, are " mothers of organic synthesis ".Shortage in the face of petroleum resources
Soaring with international oil price, raw material sources become the bottleneck of development ethylene industry, are also asking of must solving in face of people of pendulum
Topic.Therefore, a kind of new Technology is researched and developed to prepare ethylene, to be allowed to petroleum replacing as industrial raw materials, it is possible to
Alleviate the modern industry dependency to oil.
In coal chemical technology, with coal for raw material by carbide technique, or pass through Non-catalytic partial with natural gas for raw material
Oxidation technology produces acetylene, it has also become maturation process.Again with acetylene as raw material, under the effect of selective hydrocatalyst, logical
Cross hydrogenation process and obtain ethylene product, Coal Chemical Industry Route can be expanded further.Therefore, the new technology of producing ethylene with acetylene hydrogenation is developed
Technology, has broad application prospects.
Low concentration acetylene gas solid catalysis hydrogen addition technology is the most highly developed, is mainly used in ethylene removing
Acetylene impurities, the reactor of use is fixed bed reactors, and filling solid-phase catalyst carries out gas-solid phase reaction in the reactor.But
Owing to ethyne reactive is high, hydrogenation reaction thermal discharge is big, even there is a small amount of acetylene in cracking gas, traditional gas is solid phase fixed bed
Hydrogenation reactor there are still the serious problems such as green oil generating amount is big, catalyst cycle period is short, reactor easily " temperature runaway ".
Prior art one is fluidized-bed process and the device of a kind of producing ethylene with acetylene hydrogenation.This technique comprises the following steps:
Catalyst and diluent is added in fluidized-bed reactor；Catalyst is carried out heating reduction；Acetylene and hydrogen mixture are led to
Fluidized bed reactor；Selective hydrogenation of acetylene generates ethylene；Cooling medium is passed through reactor heat exchange component to remove reaction
Heat；Isolated ethylene product.This Technology has the disadvantage in that
Preparing ethylene by selective hydrogenation of acetylene is strong exothermal reaction, although when cooling medium is in order to remove reaction in the process
The substantial amounts of heat released, but still it is difficult to hidden danger that when reacting local gas temperature too high is completely eliminated；
The fluid bed used because of this technique, is just difficult to avoid that the mutual sharp impacts of catalyst particles intergranular, and this can bring catalysis
The problems such as the abrasion of the loss of agent, the difficulty of increase dedusting, increase heat exchange component and reactor.
Prior art two is continuously separated production line for a kind of ethylene, including oxygen hydrogenation reactor, cracking gas the second exsiccator,
Removal of mercaptans/cos reactor, dearsenization reactor, acetylene hydrogenation reactor.Its acetylene hydrogenation reactor used is used
Reactor is fixed bed reactors.It is merely able to process the acetylene of low concentration, and treating capacity is smaller；If acetylene content increases,
A large amount of green oil, the problem causing catalyst cycle period to shorten, even there will be reactor " temperature runaway " can be generated.
Therefore, so that reactor adapts to larger amount of reaction acetylene gas, reactor " temperature runaway " is not had
Problem, fundamentally improves gas-liquid flow field distribution, strengthening turbulence and gas-liquid mass transfer, and the quality fluidized in improving reactor, having must
A kind of new reactor preparing ethylene is proposed.
Utility model content
The purpose of this utility model is to provide a kind of paste state bed reactor preparing ethylene, to solve prior art employing
Fixed bed reactors or fluidized-bed reactor are prepared ethylene and are made internal heat be difficult to the problem spread out of.
This utility model provides a kind of paste state bed reactor preparing ethylene.Described paste state bed reactor include housing,
Heater and sieve plate, the bottom of described housing is provided with reaction gas inlet, liquid flux entrance, liquid outlet；Described housing
Top is provided with gas outlet and liquid inlet；Described heater is arranged on the bottom in described housing；Described sieve plate is positioned at described
In housing, being fixed in described inner walls, be positioned under described liquid inlet, described reaction gas inlet, described liquid are molten
On agent entrance.
Above-mentioned reactor, described inside reactor is dispersed with the sieve plate that multilamellar is parallel to each other, and stays between the sieve plate of adjacent layer
Having interval, the interval of each layer sieve plate is equal.
Above-mentioned system, every layer of described sieve plate includes seal pot, bubbling area, downflow weir and downspout；Wherein, described sieve plate
Part edge fix with described inner walls, the part that described fixing part edge and described downflow weir fence up is for by liquid
Dish, for holding the liquid flowed down from downspout described in upper strata；The centre of described seal pot is distributed sieve aperture, forms bubbling
District, described bubbling area is the main region of gas liquid reaction；Described downflow weir is located at revocable edge of described sieve plate, described excessive
Stream height of weir is in the seal pot of place layer, for keeping the height of liquid on every layer of described sieve plate；Described downspout is used for making liquid
It flow to the seal pot of sieve plate described in lower floor from the downflow weir of sieve plate described in upper strata, be positioned at the side of described downflow weir.
Further, the described downspout of above-mentioned reactor is by between the downflow weir of described sieve plate and described reactor wall
Gap is formed.
Further, described sieve aperture is equally distributed circular aperture, and the centre-to-centre spacing of described aperture is 1-5 times of aperture,
A diameter of 5-20mm of described aperture.
Above-mentioned reactor, the sieve aperture of described sieve plate can be provided with float valve or bubble-cap.
Above-mentioned reactor, the bottom of the downspout of sieve plate described in upper strata is not higher than the height of sieve plate downflow weir described in lower floor
Degree.
Further, the described downspout of described reactor adjacent layer projection on the direction being perpendicular to described seal pot
It is staggeredly arranged on circumferential angle.
Above-mentioned reactor, described heater is electric heater, steam heater, flue gas heater or heat-conducting oil heating
Device.
The beneficial effects of the utility model are, the utility model proposes a kind of new slurry reactor preparing ethylene
Device, this paste state bed reactor simple in construction, owing to there being multiple sieve plate in reactor, increase that gas-liquid-solid three-phase is fully contacted connects
Contacting surface is amassed, and improves gas-liquid flow field distribution, it is to avoid fluid flows to short circuit, but also can strengthen turbulence and gas-liquid mass transfer, improves
The quality of fluidisation in reactor.Make to utilize paste state bed reactor to carry out high concentration selective hydrogenation of acetylene and become a kind of important
The production ways of alkene processed.
Accompanying drawing explanation
Fig. 1 is the structural representation that technical solutions of the utility model prepare the paste state bed reactor of ethylene；
Fig. 2 is the plan structure schematic diagram of sieve plate in technical solutions of the utility model；
Wherein: 1, reaction gas inlet；2, liquid outlet；3, gas outlet；4, liquid inlet；5, sieve plate；6, downspout；
7, heater；8, solvent liquid entrance.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in more details, with
Just the advantage that better understood when scheme of the present utility model and its various aspects.But, specific implementations described below
Mode and embodiment are only descriptive purposes rather than to restriction of the present utility model.
If Fig. 1 is the structure chart of the paste state bed reactor in this utility model.The principle of paste state bed reactor be gas with
Bubbling form is by being suspended with liquid (serosity) layer of solid fine grain, to realize the reactor of gas-liquid-solid phase reaction process.
This utility model is for the paste state bed reactor of preparing ethylene by selective hydrogenation of acetylene, and described paste state bed reactor includes
Reactor shell, heater 7 and sieve plate 5.
Reactor shell bottom is provided with reaction gas inlet 1, solvent liquid entrance 8 and liquid outlet 2, reactor shell
Gas outlet 3 is arranged at top.
At the bottom having heaters 7 of reactor, it penetrates in reactor enclosure body.Wherein, heater 7 can make solvent steam
Send out, it is provided that the steam air-flow risen continuously, provide thermal source for whole reactor simultaneously.
Described sieve plate 5 is positioned at described housing, is fixed in described inner walls, is positioned under described liquid inlet 4, institute
State on reaction gas inlet 1, described liquid flux entrance 8.
Middle part in reactor enclosure body, is evenly distributed sieve plate 5.Every layer of sieve plate 5 has seal pot, downflow weir,
Downspout 6 and bubbling area.The part edge of sieve plate is fixed with inner walls, and revocable edge is provided with downflow weir.Fixing portion
The part that point edge and described downflow weir fence up is seal pot, for holding the liquid flowed down from upper strata downspout.
The top view of sieve plate 5 is as shown in Figure 2.Effect at the downflow weir of one end of sieve plate 5 is to maintain on every layer of sieve plate to be had
The liquid of certain altitude.It is next to downspout 6 at downflow weir.Specifically, downspout 6 can be by the downflow weir of described sieve plate and institute
The gap stating reactor wall is formed.Certainly downspout 6 may also be other structure is such as pipeline configuration.The effect of downspout 6
It it is the seal pot allowing liquid flow to lower floor's sieve plate at the downflow weir of upper strata sieve plate.The bottom of the downspout 6 of upper strata sieve plate 5 is the highest
Height in adjacent lower sieve plate 5 downflow weir.So design is to realize fluid-tight, i.e. prevents gas from rising at downspout 6
Each layer gas is caused to connect and short-circuit.Central region on sieve plate 5 is bubbling area, and it is uniform-distribution with circular aperture.Little
Hole is the main thoroughfare that gas rises, it is possible to make gas and liquid uniform contact.
Described downspout 6 being projected on circumferential angle on the direction being perpendicular to described seal pot of reactor adjacent layer
It is staggeredly arranged.The most conveniently realize the liquid that upper strata sieve plate 5 flows down and be stored in adjacent lower sieve plate 5 upper certain time, until liquid
Height goes out the downflow weir of this lower floor and flows out to the sieve plate 5 of lower floor again.
Aperture can keep pitching row's state with the flow direction of liquid, and the arrangement mode of aperture can be positive trigonometric expression.Small hole center away from
For 1-5 times of aperture, the centre-to-centre spacing between preferred hole is 1.5 times；A diameter of 10mm in the preferred hole of a diameter of 5-20mm in hole.
The sieve aperture of sieve plate also can be provided with float valve or bubble-cap.Float valve can float, along with gas flow on sieve plate
Change and change its open degree.There is riser in bubble-cap, between bubble-cap and riser, form rotary space.Riser is fixed on
On sieve plate, gas phase enters rotary space by riser, sprays by slot with certain spouting velocity, with the liquid shape on sieve plate
Become bubbling contact.
When preparing ethylene, the gaseous mixture of acetylene and hydrogen is entered by the reaction gas inlet 1 bottom paste state bed reactor
In reactor；Reacting gas along with solvent vapo(u)r together by the aperture on the sieve plate of inside reactor enter into liquid phase it
In.Wherein solvent vapo(u)r is generated by 7 liquid flux heating evaporations of heater of reactor bottom.Catalyst and carrier solvent
The liquid inlet 4 on autoreactor top flows into.Because aperture is equally distributed on sieve plate 5, so reacting gas is the most therewith
Evenly spread in the middle of liquid.In a liquid, occur instead under the catalytic action of reacting gas catalyst in being suspended in liquid
Should.Reacted gas departs from this layer of sieve plate 5, then is entered in the middle of supernatant liquid by the aperture of upper strata sieve plate 5.The most repeatedly
Until by reactor sieve plate 5 topmost, going out from the gas outlet 3 of reactor top.
In the reactor, gas be to lower and on the flow direction, liquid is the flow direction from top to down, gas phase and liquid phase overall in
Reveal the direction of adverse current, increase the effect of mass transfer and heat transfer.Owing to reactor having multiple sieve plate, namely mean reaction
Device also exists multiple little paste state bed reactor, increases the contact area that gas-liquid-solid three-phase is fully contacted, improve gas-liquid
Flow Field Distribution, it is to avoid short circuit, but also turbulence and gas-liquid mass transfer can be strengthened, the quality fluidized in improving reactor.
From reactor top reaction gas out, more i.e. can get product ethylene by condensation, separation.
After the solvent of reactor bottom carries out reclaiming filtration by liquid outlet 2, catalyst can be filtered from solvent
Out.Solvent after filtration is recycling.
In the present embodiment, the solvent of use is distilled water (electrical conductivity ＜ 5 μm/cm).Rise from reactor bottom
Steam is the thermal source of whole reactor, keeps the most stable of system temperature.When starting selective hydrogenation of acetylene reaction, release
Substantial amounts of heat, can be shifted by the evaporation of solvent, it is to avoid local temperature is too high.
The heater of this utility model reactor can be that electric heater, steam heater, flue gas heater or conduction oil add
Hot device.
Compared with the technology of acetylene hydrogenation a small amount of with current ethylene, this technology can realize being added by high concentration selective acetylene
Hydrogen ethylene, expands the technology path of Coal Chemical Industry further.
Further, in the reactor of technical solutions of the utility model, gas be to lower and on the flow direction, liquid be to
Upper and the lower flow direction, gas phase and liquid phase entirety present direction countercurrently, increase the effect of mass transfer and heat transfer.
Further, the reactor of the technical solution of the utility model there is multiple sieve plate, namely mean reactor
In there is multiple little paste state bed reactor, increase the contact area that gas-liquid-solid three-phase is fully contacted, improve gas-liquid flow
Field distribution, can avoid short circuit, but also can strengthen turbulence and gas-liquid mass transfer, the quality fluidized in improving reactor.
The technical solution of the utility model utilize liquid phase solvent sensible heat (sensible heat refers to when this heat adds or after removing,
The change of mass temperature can be caused, and do not undergo phase transition), heat-sinking capability significantly improves, and can be quickly moved out because of selective acetylene
The heat being hydrogenated to ethylene and produce, reduces the temperature of reaction bed, improves conversion ratio and the selectivity of ethylene of acetylene.
It addition, the reactor heating system of the technical program is simple, the heater 7 only relying on reactor bottom just can be real
Existing heat supply.
In a word, this utility model provide paste state bed reactor, carry out selective hydrogenation of acetylene reaction time, can be preferably
The appearance of focus in the beds caused because of exothermic reaction during suppression preparation of ethylene through selective hydrogenation of acetylene, and then avoid
Catalysqt deactivation, improves the stability of catalyst.The equipment that the utility model proposes solves well and adds at selective acetylene
The problem of the ethylene reaction produced middle reactor of hydrogen easily " temperature runaway ", and due to the mutual sharp impacts of catalyst particles intergranular in fluid bed, and
Cause the loss of catalyst, the difficulty of dedusting and the corrasion due to solid particle, cause the mill of heat exchange component and reactor
Damage serious problem.
It is last that it is noted that obviously above-described embodiment is only for clearly demonstrating this utility model example,
And not restriction to embodiment.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And thus
That is amplified out obviously changes or changes among still in protection domain of the present utility model.
Claims (9)
1. the paste state bed reactor preparing ethylene, it is characterised in that described paste state bed reactor include housing, heater and
Sieve plate,
The bottom of described housing is provided with reaction gas inlet, liquid flux entrance, liquid outlet；The top of described housing is provided with gas
Body outlet and liquid inlet；
Described heater is arranged on the bottom in described housing；
Described sieve plate is positioned at described housing, is fixed in described inner walls, is positioned under described liquid inlet, described reaction
On gas access, described liquid flux entrance.
Reactor the most according to claim 1, it is characterised in that described inside reactor is dispersed with what multilamellar was parallel to each other
Sieve plate, spaced between the sieve plate of adjacent layer, the interval of each layer sieve plate is equal.
Reactor the most according to claim 1, it is characterised in that every layer of described sieve plate includes seal pot, bubbling area, overflow
Weir and downspout；Wherein, the part edge of described sieve plate is fixed with described inner walls；
The part that described fixing part edge and described downflow weir fence up is seal pot, is used for holding from descending liquid described in upper strata
Liquid under pipe flow；
The centre of described seal pot is distributed sieve aperture, forms bubbling area, and described bubbling area is the main region of gas liquid reaction；
Described downflow weir is located at revocable edge of described sieve plate, and described downflow weir is higher than the seal pot of place layer；Described excessive
Stream weir is for keeping the height of liquid on every layer of described sieve plate；
Described downspout, for making liquid flow to the seal pot of sieve plate described in lower floor from the downflow weir of sieve plate described in upper strata, is positioned at institute
State the side of downflow weir.
Reactor the most according to claim 3, it is characterised in that described downspout by the downflow weir of described sieve plate with described
The gap of reactor wall is formed.
Reactor the most according to claim 3, it is characterised in that described sieve aperture is equally distributed circular aperture, described
The centre-to-centre spacing of aperture is 1-5 times of aperture, a diameter of 5-20mm of described aperture.
Reactor the most according to claim 3, it is characterised in that the sieve aperture of described sieve plate is provided with float valve or bubble-cap.
Reactor the most according to claim 3, it is characterised in that under the bottom of the downspout of sieve plate described in upper strata is not higher than
The height of the described sieve plate downflow weir of layer.
Reactor the most according to claim 3, it is characterised in that the described downspout of adjacent layer be perpendicular to described by liquid
Being projected on circumferential angle on the direction of dish is staggeredly arranged.
Reactor the most according to claim 1, it is characterised in that described heater is electric heater, steam heater, cigarette
Hot-air heater or hotline heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620573410.XU CN205700485U (en) | 2016-06-14 | 2016-06-14 | A kind of paste state bed reactor preparing ethylene |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620573410.XU CN205700485U (en) | 2016-06-14 | 2016-06-14 | A kind of paste state bed reactor preparing ethylene |
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| CN205700485U true CN205700485U (en) | 2016-11-23 |
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| CN201620573410.XU Expired - Fee Related CN205700485U (en) | 2016-06-14 | 2016-06-14 | A kind of paste state bed reactor preparing ethylene |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903414A (en) * | 2016-06-14 | 2016-08-31 | 北京神雾环境能源科技集团股份有限公司 | Slurry-bed reactor for preparing ethylene |
-
2016
- 2016-06-14 CN CN201620573410.XU patent/CN205700485U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903414A (en) * | 2016-06-14 | 2016-08-31 | 北京神雾环境能源科技集团股份有限公司 | Slurry-bed reactor for preparing ethylene |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 102200 Beijing City, Changping District science and Technology Park Chang Huai Lu No. 155 Patentee after: Shenwu Technology Group Co.,Ltd. Address before: 102200 Beijing City, Changping District science and Technology Park Chang Huai Lu No. 155 Patentee before: BEIJING SHENWU ENVIRONMENT AND ENERGY TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Slurry-bed reactor for preparing ethylene Effective date of registration: 20180330 Granted publication date: 20161123 Pledgee: Tianfeng Securities Co.,Ltd. Pledgor: Shenwu Technology Group Co.,Ltd. Registration number: 2018990000247 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190121 Granted publication date: 20161123 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220921 Granted publication date: 20161123 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |