CN104907011A - Gas regulation and control internal circulation slurry bed circulation reactor - Google Patents
Gas regulation and control internal circulation slurry bed circulation reactor Download PDFInfo
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- CN104907011A CN104907011A CN201510222386.5A CN201510222386A CN104907011A CN 104907011 A CN104907011 A CN 104907011A CN 201510222386 A CN201510222386 A CN 201510222386A CN 104907011 A CN104907011 A CN 104907011A
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Abstract
A gas regulation and control internal circulation slurry bed circulation reactor comprises a reactor cylinder body, a center descending pipe, a gas chamber, a gas jetting hole, a liquid collector, a guide plate, a distribution baffle plate, a gas distributor, a primary gas inlet pipe, a secondary gas inlet pipe, a liquid distributor, a liquid inlet pipe, a slag discharge port, a liquid discharge port, an axial flow cyclone separator, a reactant outlet and the like; the reactor cylinder body is axially provided with the center descending pipe, the upper part of the descending pipe is connected with the liquid collector, the periphery of the lower part of the descending pipe is provided with the annular gas chamber, the side wall of the center descending pipe in the gas chamber is provided with the jetting hole inclined downwards, and the gas inlet of the gas chamber is connected with the secondary gas inlet pipe; an outlet of the center descending pipe directly faces to the distribution baffle plate; the gas distributor arranged below the distribution baffle plate is connected with the primary gas inlet pipe; the middle of the gas distributor is provided with the slag discharge port; the bottom of the reactor cylinder body is provided with the liquid discharge port; the liquid distributor is arranged between a gas distribution plate and the distribution baffle plate and is connected with the liquid inlet pipe; the upper part of the reactor cylinder body is provided with the guide plate and the axial flow cyclone separator successively, and the top of the reactor cylinder body is provided with the reactant outlet.
Description
1. technical field
The invention provides a kind of gas regulating Inner eycle slurry bed circulatory flow reactor, relate to the bio oil of chemical field, coal tar or oil liquid phase catalytic hydrogenation reaction process.
2. background technology
Bio oil, coal tar or oil being carried out Hydrobon is one of common method improving oil quality and added value at present.Liquid-phase hydrogenatin utilizes the molten hydrogen characteristic of liquid HTHP, by liquid circulate in a large number carry hydrogen realize highly effective hydrogenation reaction, avoid the high-low pressure separator using hydrogen recycle compressor and the rear liquid of reaction and hydrogen, simplify technological process, high-tension apparatus quantity reduces more than 70%, considerably reducing hydrogenation energy consumption and investment, is the developing direction of following oil hydrogenation technique.At present conventional oil product liquid phase hydrogenation reactor has the slurry bed circulatory flow reactor forced the fixed bed reactors of outer circulation and fluidized bed reactor and developing.Fixed bed reactors advantage is that structure is simple, large granular catalyst loads simply, it is little to wear and tear, catalyst bed activity successively reduces, the high activity cycle is long, be easy to operation, but there is dead angle or stagnant area due to inside reactor thus cause the easy coking of catalyst granules, large granular catalyst and the effective contact area of gas-liquid is little causes that hydrogenation efficiency is low and liquid circulation amount is large and catalyst change is difficult.Fluidized bed reactor is in order to eliminate the defect of fixed bed reactors, adopt fine catalyst and fluidization technology, gas-liquid-solid is contacted fully mix, hydrogenation efficiency is high, in reactor, substantially there is not dead angle or stagnant area, coking phenomenon alleviates, and catalyst change is convenient.Force the fixed bed reactors of outer circulation and fluidized bed reactor by arranging liquid circulation pump and hydrogen dissolving blender outside reactor, force liquid Matter Transfer and take hydrogen, greatly increase hydrogen and liquid material and dissolve mixed dissolution speed in blender and degree at hydrogen, increase substantially hydrogenation efficiency, avoid the hydrogen recycle compressor of hydrogen circulation and use high energy consumption, but this requires that circulating pump will bear high temperature, high pressure, the harsh conditions such as airwater mist cooling material and hydrogen attack, circulating pump expensive and running risk is larger for a long time, the bottleneck becoming the liquid phase hydrogenation technology application of restriction oil product and promote.
Slurry bed circulatory flow reactor is the efficient heterophase reactor of another kind developed on the basis of fluidized bed reactor, the density contrast inside and outside fluid race way is utilized to realize the Inner eycle of liquid material, avoid using outer circulation pump to force Matter Transfer, both the large high viscosity oil material for the treatment of capacity had been applicable to, Gu be conducive to again gas-liquid-between heterogeneous reaction, also have that structure is simple, cost is low simultaneously, can the advantage such as long-term operation, be the ideal reactor carrying out oil product catalytic hydrogenation.The modal circulation flow reactor being annulus decline and circulating at present, the reactor diameter that treating capacity is larger is about large, and the circulation area proportion of annulus is larger, and liquid circulation velocity reduces greatly, and the holdup time lengthens; In addition the wall surface of oil product contact is long-pending increases, and oil coke probability increases greatly, and this is also the Main Bottleneck of current heavy oil floating bed hydrogenation industrial applications.The circulation flow reactor of central tube decline circulation, the defect of annulus decline circulation is overcome from structure, be suitable as the paste state bed reactor of high throughput, but compared with forced-circulation boiling bed bioreactor, existing center down-comer flow rate of liquid is on the low side, and the liquid-circulating multiplying power that causes is low, can not meet the requirement of liquid-phase hydrogenatin big cycle volume, hydrogen dispersion in addition, mixing and solubility property are poor, and hydro-conversion efficiency has much room for improvement.Therefore the high liquid-circulating multiplying power of exploitation and the excellent Novel ring flow reactor of hydrogen miscible characteristic is badly in need of, meet the circulation needs of oil product liquid-phase hydrogenatin, increase contact area and the turbulence intensity of airwater mist cooling, improve the uniformity of solids fluidized distribution, enhancing mass and heat transfer, improve hydrogenation reaction efficiency, avoid coking and improve reactor for treatment ability.
3. summary of the invention
The object of the invention is the deficiency in order to overcome existing forced circulation suspended-bed reactor and circulation flow reactor and a kind of gas regulating Inner eycle slurry bed circulatory flow reactor invented, being suitable for middle-size and small-size liquid-phase hydrogenatin device.By arranging multiple gas high velocity jet hole in down-comer bottom, center, the ejection at a high speed of the gas jetting hole of hydrogen through down-comer bottom, ring-shaped air chamber voltage stabilizing current-sharing Hou Jing center, pumping liquid forced circulation, strengthening hydrogen mixes and dissolving with oil product, eliminates the coking of decline race way; Gas is divided into two-stage charging, utilizes charge proportion to realize the regulation and control of circulating fluid multiplying power, improves liquid-phase hydrogenatin efficiency.
Technical scheme of the present invention:
A kind of gas regulating Inner eycle slurry bed circulatory flow reactor, comprises reactor shell, center down-comer, air chamber, gas jetting hole, liquid trap, deflector, distribution baffle plate, gas distributor, one-level air inlet pipe, secondary inlet pipe, liquid distribution trough, feed tube, slag-drip opening, leakage fluid dram, axial flow cyclone separator, reactant outlet etc.; Reactor shell is axially middle arranges center down-comer, and down-comer top, center connects conical liquid collector; The down-comer lower periphery ring-shaped air chamber coaxial with it in center is connected, and the center decline tube edge wall in air chamber is provided with two row or multi-row gas jetting hole obliquely, and the air inlet of air chamber is connected with the secondary inlet pipe of reactor shell; Center down-comer outlet is just to distribution baffle plate; The gas distributor arranged under distribution baffle plate is connected with the one-level air inlet pipe of reactor shell, arranges slag-drip opening in the middle of gas distributor; Bottom reactor shell, leakage fluid dram is set; Between gas distribution grid with distribution baffle plate, liquid distribution trough is set and is connected with the feed tube of reactor shell; Down-comer top, center arranges liquid trap, and reactor shell top sets gradually deflector and axial flow cyclone separator, and the circular passage area between liquid trap and deflector is greater than the annulus area of reactor shell and center down-comer; Reactor shell top arranges reactant outlet.
4. accompanying drawing explanation
Accompanying drawing is the equipment structure chart of invention.Wherein: Fig. 1 is a kind of overall diagram of gas regulating Inner eycle slurry bed circulatory flow reactor; Fig. 2 is ring-shaped air chamber top view; Fig. 3 is ring-shaped air chamber sectional view.
Wherein: 1, reactor shell; 2, center down-comer; 3, air chamber; 4, gas jetting hole; 5, liquid trap; 6, deflector; 7, distribute baffle plate; 8, gas distributor; 9, one-level air inlet pipe; 10, secondary inlet pipe; 11, feed tube; 12, leakage fluid dram; 13, slag-drip opening; 14, reactant outlet; 15, liquid distribution trough; 16. axial flow cyclone separators.
5. detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in detail: a kind of gas regulating Inner eycle slurry bed circulatory flow reactor, comprise reactor shell (1), center down-comer (2), air chamber (3), gas jetting hole (4), liquid trap (5), deflector (6), distribution baffle plate (7), gas distributor (8), one-level air inlet pipe (9), secondary inlet pipe (10), feed tube (11), leakage fluid dram (12), slag-drip opening (13), reactant outlet (14), liquid distribution trough (15), axial flow cyclone separator (16) etc., reactor shell (1) is axially middle arranges center down-comer (2), and center down-comer (2) top connects taper liquid trap (5), center down-comer (2) lower periphery is connected with its coaxial ring-shaped air chamber (3), center down-comer (2) Bian Bishang in air chamber (3) is provided with two row or multi-row gas jetting hole obliquely (4), and the air inlet of air chamber (3) is connected with the secondary inlet pipe (10) of reactor shell (1), center down-comer (2) outlet is just to distribution baffle plate (7), the gas distributor (8) arranged under distribution baffle plate (7) is connected (9) with the one-level air inlet pipe of reactor shell (1), arranges slag-drip opening (13) in the middle of gas distributor (8), reactor shell (1) bottom arranges leakage fluid dram (12), between gas distribution grid (8) with distribution baffle plate (7), liquid distribution trough (15) is set and is connected with the feed tube (11) of reactor shell (1), center down-comer (2) top arranges liquid trap (5), reactor shell (1) top sets gradually deflector (6) and axial flow cyclone separator (16), and the circular passage area between liquid trap (5) and deflector (6) is greater than the annulus area of reactor shell (1) and center down-comer (2), reactor shell (1) top arranges reactant outlet (14).
The angle of liquid trap (5) is 60-120 °.
Gas jetting hole (4) is uniform at the periphery of center down-comer (2), is 10-45 ° with center down-comer (2) axial direction; The 1%-10% of down-comer (2) cross-sectional area centered by the percent opening of gas jetting hole (4); The aperture of gas jetting hole (4) is 3-6mm.
The cone angle of distribution baffle plate (7) is 90-150 °.
Distribution baffle plate (7) is 1-1.5 with the vertical range of center down-comer (2) bottom and the ratio of center down-comer (2) diameter.
Gas distributor (8) can be the one of gas distributor existing or newly developed, preferred sieve plate type gas distributor.
Reactor shell (1) is 1.8-2.5 with the diameter ratio of center down-comer (2).
Deflector (6) lower edge diameter is the 1/3-2/3 of reactor shell (1) diameter.
Liquid trap (5) upper edge diameter 0-400mm larger than deflector (6) lower edge diameter.
Vertical range between liquid trap (5) upper edge and deflector lower edge (6) and the ratio of deflector diameter are 1-1.5.
Concrete technology path is: carry the coal tar of fresh catalyst, bio oil or petroleum oil enter reactor shell (1) from feed tube (12), through liquid distribution trough (15) and distribute baffle plate (7) dispersed after flow from bottom to top; Hydrogen divides two strands to enter reactor shell (1), one from one-level air inlet pipe (9) after gas distributor (8) is dispersed with reaction oil product and catalyst exposure, carry out bubbling mass transfer reaction; Another stock at a high speed sprays into center down-comer (2) through air chamber (3) by gas jetting hole (4) obliquely from secondary inlet pipe (10), under the swabbing action of air-flow, flow into liquid trap (5) containing the annular space between reaction oil product autoreactor cylindrical shell (1) of catalyst and center down-comer (2) and in center down-comer (2) sharp downward movement; The foam flow sprayed from center down-comer (2) disperses to periphery under the water conservancy diversion of baffle plate (7), then the annular space entered between reactor shell (1) and center down-comer (2) of turning back moves upward, a reaction oil product part containing catalyst flows into liquid trap (5) and moves downward formation Rapid Circulation, and another part is autoreaction thing outlet (14) discharge after settled catalyst under the effect of deflector (6) and axial flow cyclone separator (16); Leakage fluid dram (15) is set in reactor shell (1) bottom for shut-down (breakdown) mainteance discharge opeing or irregular deslagging.
A kind of gas regulating Inner eycle slurry bed circulatory flow reactor provided by the present invention, has following characteristics:
(1) by arranging two row or multi-row gas jetting hole obliquely in center down-comer lower periphery, hydrogen sprays into center down-comer at a high speed from gas jetting hole after the uniform and current stabilization of air chamber, pumping liquid forced circulation, strengthening hydrogen mixes and dissolving with oil product, improve the circulating ratio of liquid in reactor and molten hydrogen amount, eliminate the coking of decline race way, extend airwater mist cooling time of contact, improve reaction efficiency, and without the need to oil product outer circulation, eliminate expensive outer circulation pump, greatly reduce the risk of reactor long-term operation.
(2) gas is divided into two-stage charging, utilizes charge proportion to realize the regulation and control of circulating fluid multiplying power, improves liquid-phase hydrogenatin efficiency, be suitable for middle-size and small-size liquid-phase hydrogenatin device.
Special instruction, gas regulating Inner eycle slurry bed circulatory flow reactor not only may be used for oil product liquid-phase hydrogenatin course of reaction, also may be used for other chemical reaction process and sewage disposals.
Claims (8)
1. a gas regulating Inner eycle slurry bed circulatory flow reactor, comprise reactor shell, center down-comer, air chamber, gas jetting hole, liquid trap, deflector, distribution baffle plate, gas distributor, one-level air inlet pipe, secondary inlet pipe, liquid distribution trough, feed tube, slag-drip opening, leakage fluid dram, axial flow cyclone separator, reactant outlet etc., it is characterized in that arranging center down-comer in the middle of reactor shell axially, down-comer top, center connects conical liquid collector; The down-comer lower periphery ring-shaped air chamber coaxial with it in center is connected, and the center decline tube edge wall in air chamber is provided with two row or multi-row gas jetting hole obliquely, and the air inlet of air chamber is connected with the secondary inlet pipe of reactor shell; Center down-comer outlet is just to distribution baffle plate; The gas distributor arranged under distribution baffle plate is connected with the one-level air inlet pipe of reactor shell, arranges slag-drip opening in the middle of gas distributor; Bottom reactor shell, leakage fluid dram is set; Between gas distribution grid with distribution baffle plate, liquid distribution trough is set and is connected with the feed tube of reactor shell; Down-comer top, center arranges liquid trap, and reactor shell top sets gradually deflector and axial flow cyclone separator, and the circular passage area between liquid trap and deflector is greater than the annulus area of reactor shell and center down-comer; Reactor shell top arranges reactant outlet.
2. a kind of gas regulating Inner eycle slurry bed circulatory flow reactor according to claim 1, is characterized in that the angle of liquid trap is 60-120 °.
3. a kind of gas regulating Inner eycle slurry bed circulatory flow reactor according to claim 1, it is characterized in that gas jetting hole is uniform at the periphery of center down-comer, is 10-45 ° with center down-comer axial direction; The 1%-10% of down-comer cross-sectional area centered by the percent opening of gas jetting hole; The aperture of gas jetting hole is 3-6mm.
4. a kind of gas regulating Inner eycle slurry bed circulatory flow reactor according to claim 1, is characterized in that the cone angle of distribution baffle plate is 0-180 °, preferred 90-150 °; Distribution baffle plate is 1-1.5 with the vertical range of down-comer bottom, center and the ratio of center down-comer diameter.
5. a kind of gas regulating Inner eycle slurry bed circulatory flow reactor according to claim 1, is characterized in that reactor shell is 1.8-2.5 with the diameter ratio of center down-comer.
6. a kind of gas regulating Inner eycle slurry bed circulatory flow reactor according to claim 1, is characterized in that deflector lower edge diameter is the 1/3-2/3 of reactor shell diameter.
7. a kind of gas regulating Inner eycle slurry bed circulatory flow reactor according to claim 1, is characterized in that liquid trap upper edge diameter 0-400mm larger than deflector lower edge diameter.
8. a kind of gas regulating Inner eycle slurry bed circulatory flow reactor according to claim 1, is characterized in that the ratio of vertical range between liquid trap upper edge and deflector lower edge and deflector diameter is 1-1.5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510222386.5A CN104907011B (en) | 2015-05-05 | 2015-05-05 | Circulating Slurry Reactor circulation flow reactor in a kind of gas regulating |
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| CN201510222386.5A CN104907011B (en) | 2015-05-05 | 2015-05-05 | Circulating Slurry Reactor circulation flow reactor in a kind of gas regulating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106753557A (en) * | 2016-12-09 | 2017-05-31 | 上海河图工程股份有限公司 | A kind of high-efficiency heavy oil conversion process |
| CN107088387A (en) * | 2017-06-24 | 2017-08-25 | 天津如有科技有限公司 | Integrated tower type circulating flow reactor applied to fine chemical production and production method |
| CN108148739A (en) * | 2018-02-08 | 2018-06-12 | 沈阳农业大学 | Circulating degasification formula fluidized bed aerosol generator |
| CN108554330A (en) * | 2018-05-25 | 2018-09-21 | 北京中科诚毅科技发展有限公司 | Water conservancy diversion technique and its design method and purposes in a kind of hydrogenation reactor |
| CN109967002A (en) * | 2019-04-26 | 2019-07-05 | 河南百优福生物能源有限公司 | The three phase separator of biomass pyrolysis liquid fluidized bed reactor and its application |
| EP4090646A4 (en) * | 2020-01-13 | 2024-02-28 | Kellogg Brown & Root LLC | Slurry phase reactor with internal cyclones |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753557A (en) * | 2016-12-09 | 2017-05-31 | 上海河图工程股份有限公司 | A kind of high-efficiency heavy oil conversion process |
| CN107088387A (en) * | 2017-06-24 | 2017-08-25 | 天津如有科技有限公司 | Integrated tower type circulating flow reactor applied to fine chemical production and production method |
| CN107088387B (en) * | 2017-06-24 | 2023-12-26 | 天津如有科技有限公司 | Integrated tower type circulating flow reactor applied to fine chemical production and production method |
| CN108148739A (en) * | 2018-02-08 | 2018-06-12 | 沈阳农业大学 | Circulating degasification formula fluidized bed aerosol generator |
| CN108148739B (en) * | 2018-02-08 | 2023-05-16 | 沈阳农业大学 | Circulation degassing type fluidized bed bioreactor |
| CN108554330A (en) * | 2018-05-25 | 2018-09-21 | 北京中科诚毅科技发展有限公司 | Water conservancy diversion technique and its design method and purposes in a kind of hydrogenation reactor |
| CN108554330B (en) * | 2018-05-25 | 2024-04-02 | 北京中科诚毅科技发展有限公司 | Internal flow guiding process of hydrogenation reactor and design method and application thereof |
| CN109967002A (en) * | 2019-04-26 | 2019-07-05 | 河南百优福生物能源有限公司 | The three phase separator of biomass pyrolysis liquid fluidized bed reactor and its application |
| EP4090646A4 (en) * | 2020-01-13 | 2024-02-28 | Kellogg Brown & Root LLC | Slurry phase reactor with internal cyclones |
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