CN102641695B - Circulating accelerating pipe used in annular fluidized bed reactor - Google Patents
Circulating accelerating pipe used in annular fluidized bed reactor Download PDFInfo
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- CN102641695B CN102641695B CN201210132398.5A CN201210132398A CN102641695B CN 102641695 B CN102641695 B CN 102641695B CN 201210132398 A CN201210132398 A CN 201210132398A CN 102641695 B CN102641695 B CN 102641695B
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Abstract
The invention provides a circulating accelerating pipe used in an annular fluidized bed reactor, which comprises a 90-degree elbow pipe, a riser pipe, a reducing joint, a three-way pipe, a straight-through pipe joint, a connecting pipe, a first nut, a conical pipe, an O-shaped ring, a gasket and a second nut. The upper end of a main pipe of the three-way pipe is vertically successively connected with the reducing joint, the riser pipe and the 90-degree elbow pipe, the lower end of the main pipe of the three-way pipe is vertically successively connected with the straight-through pipe joint and the connecting pipe, the straight-through pipe joint is fixedly connected with the connecting pipe via the first nut, the conical pipe is mounted in the straight-through pipe joint, the lower end of the conical pipe is clamped in a sunken table at the lower end of a center through hole of the straight-through pipe joint, the top end of the conical pipe is higher than the axis of a side branch pipe of the three-way pipe, the O-shaped ring is disposed between the lower end surface of the conical pipe and the upper end surface of the connecting pipe, the lower end of the connecting pipe is a spraying nozzle, and the side branch pipe of the three-way pipe is an air inlet of the circulating accelerating pipe. The conical pipe is added in the circulating accelerating pipe, so that fluid circulation can be accelerated, and the conversion rate of objective products is improved.
Description
Technical field
The present invention relates to a kind of velocity hooster, be specifically related to a kind ofly for the circulation velocity hooster in annular fluidized bed reactor, belong to fluidized-bed reactor technical field.
Background technology
Fluidized-bed reactor is that a kind of gas or liquid of utilizing makes solid particle in suspended motion state by granular solids layer, and the reactor of the promoting the circulation of qi solid phase reaction process of going forward side by side or liquid and solid phase reaction process, when for gas-solid system, claims again fluidized bed reactor.Fluidization, due to its peculiar advantage, as efficient heat and mass, uniform temperature field, the high throughput of particle, very wide opereating specification etc., is all widely used it, and still has extraordinary industrial prospect in many industrial circles.But fluid bed still exists a lot of drawbacks: 1) violent circulation and the stirring in continuous-flow process due to solid particle and bubble, gas phase or solid phase all exist wider time of staying distribution, cause unsuitable product to distribute, battle array the is low conversion ratio of target product; 2) reactant, with bubble form by bed, has reduced the touch opportunity between Gas-solid phase, has reduced reaction conversion ratio; 3) when using solid catalyst, violent shock and the friction of bed material particle in flow process, makes catalyst accelerate efflorescence, adds taking out of of the explosion of bed top bubble and high-speed motion, a large amount of particulate catalyst, causes obvious catalyst loss; 4) complex fluid mechanics, the transport phenomenon in bed, makes process under non-Steady, is difficult to disclose and summarize unified rule, is also difficult to the bottleneck of the amplification of breakthrough experience and experiential operating.
On fluid bed operation principle basis, several dissimilar consersion units have been developed at present.Wherein, the popular fluidized bed boiler technology that circulates is the high-efficiency low-pollution clean burning branch art developing rapidly in recent ten years.During work, the effect that material is subject to fluidized carrier gas presents fluidized state.Bulky grain falls into lower furnace portion by self gravitation along inboard wall of burner hearth, and so circulation, is called interior circulation.Tiny particle is raised suction, is entrained in cyclone separator and by centrifugal force, gravity, falls into material returning device and send into burner hearth by returning charge wind, loosening wind by flue gas.Formed outer circulation.Thin ash is sucked deduster by air-introduced machine, after dedusting completes, enters flue.But this structure of recirculating fluidized bed makes the abrasion of boiler device more serious, and need to drop into extra power source, so its economy is not high.
Spain university developed spouted bed cracker, during work, cracking steam can leave reactor immediately, and solid material can circulate in reactor, until the complete sharp word of cracking just takes out of with gas after diminishing, thereby can solve the contradiction that raw material particle and product vapor required the time of staying.Another advantage of this device is, the cracking of living beings and the refining of cracked oil can together with complete.Because the inert particle that often can add certain density in spouted reactor is to promote heat transfer and mass transfer, if the catalyst replaced inert particle that has catalytic pyrolysis effect, can improve the quality of cracked oil.Although spouted bed can solve the problem of fluid bed to a certain extent, so far, it is only applicable to small-sized device.
Summary of the invention
In view of this, the invention provides a kind of for the circulation velocity hooster in annular fluidized bed reactor, can be by promoting the mode of inside reactor Fluid Circulation improve the heat transfer efficiency of reactor.
A kind of for the circulation velocity hooster in annular fluidized bed reactor, described fluidized-bed reactor comprises shell of reactor and combustion chamber, shell of reactor and combustion chamber are cylindrical shell, combustion chamber is vertically arranged in shell of reactor and forms annular reaction district between the two, it is characterized in that, circulation velocity hooster comprises 90 ° of bend pipes, riser, reducing joint, three-way pipe, free flow coupling, adapter, the first nut, conical pipe, O type circle, pad and the second nut, and ancillary equipment is blower fan; Wherein the center of free flow coupling has through hole, and the lower end of through hole is processed with heavy stand, and is processed with draw-in groove on the periphery of middle part, is processed with thread segment and lower thread segment on the periphery of lower end, and the positioning table corresponding with free flow coupling lower end heavy stand arranged at conical pipe bottom;
Annexation is: three-way pipe supervisor's upper end is vertically connected with reducing joint in turn, riser and 90 ° of bend pipes, the small end of reducing joint is communicated with three-way pipe and the uncovered of 90 ° of bend pipes is the exhaust outlet of circulation velocity hooster, three-way pipe supervisor's lower end is vertically connected with free flow coupling and adapter in turn, between free flow coupling and adapter, by the first nut, be connected, the first nut coordinates with the lower thread segment of free flow coupling, the inner conical pipe of installing of free flow coupling, the lower end of conical pipe is stuck in the heavy stand of free flow coupling central through hole lower end, and its top is higher than the axis of three-way pipe side branch pipe, between the lower surface of conical pipe and the upper surface of adapter, be provided with O type circle, the lower end of taking over is spouted mouthful, in the draw-in groove of free flow coupling periphery, install on pad and upper thread segment the second nut is installed, the arm of three-way pipe sidepiece is the air inlet of circulation velocity hooster,
Circulation velocity hooster is vertically arranged on inside, combustion chamber, 90 ° of bend pipes of circulation velocity hooster and three-way pipe side branch pipe are communicated with through the periphery Bing Yu annular reaction district of combustion chamber, the lower end of circulation velocity hooster is passed the bottom surface of combustion chamber and is fixed by the second nut, and the lower end of adapter is communicated with blower fan.
Described conical pipe internal cavities is divided into two sections, and epimere cavity is cylindrical, and hypomere cavity is taper, and the cone angle of hypomere taper is 20～40 °.
Beneficial effect: (1) the present invention increases conical pipe in circulation velocity hooster, the air inlet pressure of velocity hooster of making to circulate is less than the pressure of reaction zone, can accelerate the circulation of fluid and reduce solid particle and the time of staying of bubble in continuous-flow process, product is evenly distributed, improves the conversion ratio of target product; (2) the present invention increases reducing joint between three-way pipe and riser, increases the cross section that fluid rises, and accelerates the circulation of fluid; (3) the present invention can according to the capacity of reactor and actual demand increases or the quantity of minimizing circulation velocity hooster, and the duty of reactor can be tuned into the melt.
Accompanying drawing explanation
Fig. 1 is the circulate structure chart of velocity hooster of the present invention.
Fig. 2 is the circulate partial enlarged drawing of velocity hooster of the present invention.
Wherein, 1-90 ° of bend pipe, 2-riser, 3-reducing joint, 4-three-way pipe, 5-free flow coupling, 6-adapter, 7-the first nut, 8-conical pipe, 9-O type circle, 10-exhaust outlet, 11-air inlet, the spouted mouth of 12-, 13-pad, 14-the second nut
The specific embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
As shown in accompanying drawing 1 and accompanying drawing 2, the invention provides a kind of for the circulation velocity hooster in annular fluidized bed reactor, this circulation velocity hooster comprises 90 ° of bend pipes 1, riser 2, reducing joint 3, three-way pipe 4, free flow coupling 5, takes over the 6, first nut 7, conical pipe 8, O type circle 9, pad 13 and the second nut 14, and ancillary equipment is blower fan; Wherein the center of free flow coupling 5 has through hole, and the lower end of through hole is processed with heavy stand, and is processed with draw-in groove on the periphery of middle part, is processed with two joint screw threads on the periphery of lower end; The internal cavities of conical pipe 8 is divided into two sections, and epimere cavity is cylindrical, and hypomere cavity is taper, and the cone angle of hypomere taper is that the positioning table corresponding with free flow coupling 5 lower end heavy stands arranged at 20 ° and bottom;
Annexation is: three-way pipe 4 supervisors' upper end is vertically connected with reducing joint 3 in turn, riser 2 and 90 ° of bend pipes 1, the small end of reducing joint 3 is communicated with three-way pipe 4 and the uncovered of 90 ° of bend pipes 1 is the exhaust outlet 10 of circulation velocity hooster 16, three-way pipe 4 supervisors' lower end is vertically connected with free flow coupling 5 in turn and takes over 6, between free flow coupling 5 and adapter 6, by the first nut 7, be connected, the first nut 7 coordinates with the lower thread segment of free flow coupling 5, the inner conical pipe 8 of installing of free flow coupling 5, the lower end of conical pipe 8 is stuck in the heavy stand of free flow coupling 5 central through hole lower ends, and its top is higher than the axis of three-way pipe 4 side branch pipe, between the upper surface of the lower surface of conical pipe 8 and adapter 6, be provided with O type circle 9, the lower end of adapter 6 is spouted mouthful 12, in the draw-in groove of free flow coupling 5 peripheries, install on pad 13 and upper thread segment the second nut 14 is installed, the arm of three-way pipe 4 sidepieces is the air inlet 11 of circulation velocity hooster 16.
Fluidized-bed reactor comprises shell of reactor and combustion chamber, shell of reactor and combustion chamber are cylindrical shell, combustion chamber is vertically arranged in shell of reactor and forms annular reaction district between the two, circulation velocity hooster is vertically arranged on inside, combustion chamber, 90 ° of bend pipes 1 of circulation velocity hooster and three-way pipe 4 side branch pipe are communicated with through the periphery Bing Yu annular reaction district of combustion chamber, the lower end of circulation velocity hooster is also fixing by the second nut 14 through the bottom surface of combustion chamber, and the lower end of adapter 6 is communicated with blower fan.
Operation principle: start blower fan, fluidized carrier gas is entered in circulation velocity hooster by spouted mouthful 12, fluidized carrier gas just can be passed through conical pipe 8, because the inlet diameter of conical pipe 8 is large, outlet diameter is little, fluidized carrier gas therefrom can decline to a great extent by rear pressure, the outlet pressure that is conical pipe 8 is less, and because the bed in annular reaction district presents certain malleation, therefore the fluid in annular reaction district just can enter in circulation velocity hooster by air inlet 11 because of the effect of pressure, and the peak of conical pipe 8 is higher than the axis of three-way pipe 4 side branch pipe (air inlet 11), so can directly enter in riser 2 and can not flow out from three-way pipe 4 side branch pipe from the fluidized carrier gas of conical pipe 8 ejection, fluid and fluidized carrier gas rise after mixing in circulation velocity hooster, finally from exhaust outlet 10, get back in annular reaction district, can realize like this circulation of fluid in reactor, fluid in reactor is in depth contacted with thermal source, improve heat utilization rate, increase the heat transfer efficiency of reactor, in addition due to the viscous effect of fluid, the fluidized carrier gas that blower fan blasts can drive the motion together thereupon of static gas around the outlet ejection from conical pipe 8, this just makes the former interior gas molecule quantity of having living space in air inlet 11 places reduce, cause negative pressure to a certain degree.Due to the effect of negative pressure, the fluid that can accelerate in reaction zone enters in circulation velocity hooster from air inlet 11, accelerates the circulation of fluid.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. one kind for the circulation velocity hooster in annular fluidized bed reactor, described fluidized-bed reactor comprises shell of reactor and combustion chamber, shell of reactor and combustion chamber are cylindrical shell, combustion chamber is vertically arranged in shell of reactor and forms annular reaction district between the two, it is characterized in that, circulation velocity hooster comprises 90 ° of bend pipes (1), riser (2), reducing joint (3), three-way pipe (4), free flow coupling (5), take over (6), the first nut (7), conical pipe (8), O type circle (9), pad (13) and the second nut (14), ancillary equipment is blower fan, wherein the center of free flow coupling (5) has through hole, the lower end of through hole is processed with heavy stand, and be processed with draw-in groove on the periphery of middle part, on the periphery of lower end, be processed with thread segment and lower thread segment, the positioning table corresponding with free flow coupling (5) lower end heavy stand arranged at conical pipe (8) bottom, and conical pipe (8) internal cavities is divided into two sections, and epimere cavity is cylindrical, hypomere cavity is taper, and the cone angle of hypomere taper is 20～40 °,
Annexation is: three-way pipe (4) supervisor's upper end is vertically connected with reducing joint (3) in turn, riser (2) and 90 ° of bend pipes (1), the small end of reducing joint (3) is communicated with three-way pipe (4) and the uncovered of 90 ° of bend pipes (1) is the exhaust outlet (10) of circulation velocity hooster, three-way pipe (4) supervisor's lower end is vertically connected with free flow coupling (5) in turn and takes over (6), between free flow coupling (5) lower end and adapter (6), by the first nut (7), be connected, the first nut (7) coordinates with the lower thread segment of free flow coupling (5), the inner conical pipe (8) of installing of free flow coupling (5), the lower end of conical pipe (8) is stuck in the heavy stand of free flow coupling (5) central through hole lower end, and its top is higher than the axis of three-way pipe (4) side branch pipe, between the upper surface of the lower surface of conical pipe (8) and adapter (6), be provided with O type circle (9), the lower end of taking over (6) is spouted mouthful (12), in the draw-in groove of free flow coupling (5) periphery, install on pad (13) and upper thread segment the second nut (14) is installed, the arm of three-way pipe (4) sidepiece is the air inlet (11) of circulation velocity hooster, circulation velocity hooster is vertically arranged on inside, combustion chamber, 90 ° of bend pipes (1) of circulation velocity hooster and three-way pipe (4) side branch pipe are communicated with through the periphery Bing Yu annular reaction district of combustion chamber, the lower end of circulation velocity hooster is also fixing by the second nut (14) through the bottom surface of combustion chamber, and the lower end of taking over (6) is communicated with blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210132398.5A CN102641695B (en) | 2012-04-28 | 2012-04-28 | Circulating accelerating pipe used in annular fluidized bed reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210132398.5A CN102641695B (en) | 2012-04-28 | 2012-04-28 | Circulating accelerating pipe used in annular fluidized bed reactor |
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| Publication Number | Publication Date |
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| CN102641695A CN102641695A (en) | 2012-08-22 |
| CN102641695B true CN102641695B (en) | 2014-03-26 |
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| CN103666514B (en) * | 2013-11-22 | 2015-07-01 | 胥利先 | Method for on-line catalytic cracking of biomass through gushing bed-revolving bed two-step method |
| CN109046185A (en) * | 2018-07-14 | 2018-12-21 | 深圳市星聚工业自动化有限公司 | A kind of microwave boiling reactor |
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| GB8530020D0 (en) * | 1985-12-05 | 1986-01-15 | British American Tobacco Co | Treatment of particulate materials |
| DE19949193C2 (en) * | 1999-10-13 | 2001-11-29 | Messer Griesheim Gmbh | Method and device for carrying out a reaction between gaseous and solid reactants in a fluidized particle layer |
| CN202538745U (en) * | 2012-04-28 | 2012-11-21 | 北京林业大学 | Circulating velocity booster for annular fluidized bed reactor |
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| CB03 | Change of inventor or designer information |
Inventor after: Si Hui Inventor after: Wang Xiao Inventor after: Chang Jianmin Inventor after: Ren Xueyong Inventor before: Wang Xiao Inventor before: Si Hui Inventor before: Ren Xueyong Inventor before: Chang Jianmin |
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Free format text: CORRECT: INVENTOR; FROM: WANG XIAO SI HUI REN XUEYONG CHANG JIANMIN TO: SI HUI WANG XIAO CHANG JIANMIN REN XUEYONG |
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Granted publication date: 20140326 Termination date: 20200428 |