CN102698660A - Gas-solid moving bed reactor with double cylinders - Google Patents
Gas-solid moving bed reactor with double cylinders Download PDFInfo
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- CN102698660A CN102698660A CN2012101594614A CN201210159461A CN102698660A CN 102698660 A CN102698660 A CN 102698660A CN 2012101594614 A CN2012101594614 A CN 2012101594614A CN 201210159461 A CN201210159461 A CN 201210159461A CN 102698660 A CN102698660 A CN 102698660A
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Abstract
The invention relates to a gas-solid moving bed reactor with double cylinders, which comprises a Y-shaped double-cylinder structure and a reversed Y-shaped structure which are communicated on reaction sections. The Y-shaped double-cylinder structure comprises heat storage sections, the reaction sections, a conical structure and an ash discharge section; the reversed Y-shaped structure comprises a material box and a double-fork material feeding pipe; the upper ends of the heat storage sections are communicated with gas inlet and outlet pipes, and the gas inlet and outlet pipes are communicated with a raw gas inlet pipe and a product gas inlet pipe respectively; the upper ends of the reaction sections are provided with preheated gas branch pipes and coolant inlets; the lower end of the conical structure is provided with a coolant outlet; a heat-exchanging pipe is arranged above the ash discharge section in the Y-shaped double-cylinder structure; and the ash discharge section is arranged on the lower end of the conical structure and provided with an initiating gas pipe. The gas-solid moving bed reactor with double cylinders has a simple and reasonable structure, can recycle and utilize heat energy efficiently and is convenient to operate.
Description
Technical field
The present invention relates to a kind of moving-burden bed reactor, a kind of specifically double shell moving-burden bed reactor that is used for gas-solid reaction.
Background technology
CN20423274Y discloses " but moving bed reactor device of a kind of catalyst successive reaction and regeneration ", and this device is made up of moving-burden bed reactor, weighing hopper, the bucket of locking, following lock bucket, catalyst regeneration reactor and rotation discharge valve.This reactor is provided with the heat exchange tubulation, removable a part of heat in course of reaction, but the heat that carries of working off one's feeling vent one's spleen fails to be recovered utilization.
CN201586520U discloses " a kind of moving-burden bed reactor ", and this reactor is made up of loading hopper, reactor and regenerator.Reactor top links to each other with loading hopper through valve, and the lower end links to each other with regenerator through valve, and reactor bottom is provided with the reaction gas inlet, and top is provided with the reaction gas outlet, and the regenerator bottom is provided with the regeneration gas inlet, and top is provided with the regeneration gas outlet.The weak point of this moving-burden bed reactor is: the reactor part is not provided with heat-exchanger rig, in course of reaction, can produce the accumulation of heat, form high temperature, and the gas temperature in reaction gas exit is higher, and heat is not recovered.
CN201770681U discloses " a kind of fixed bed coal seam gas on-catalytic device for deoxidizing ".This device comprises capital equipments such as body of heater, water leg, drum, coal bin, water seal arrangement, spiral ash ejector and spray column.Its primary structure characteristics: the one, water leg surrounds sidewall of the furnace body, through regulating the flow of cooling water, controls the temperature in the body of heater; The 2nd, product gas escape pipe is provided with spray column, and deoxidation product gas is carried out cooling and dedusting; The 3rd, the coal bed gas escape pipe is provided with the circulating air recurrent canal.The part deoxidation product gas of circulation mixes with coal bed gas, regulates the air inlet oxygen content, reaches the purpose of control furnace temperature.The weak point of this device is: the water leg of the setting wall of only sitting around a fire, and heat exchange area is little, and heat transfer efficiency is low, and the inside reactor temperature distributing disproportionation is even; Have low-temperature space, and the burning of the coke of low-temperature space is insufficient, can get rid of with lime-ash, causes the coke waste.
Summary of the invention
The present invention is directed to the existing deficiency that is used for the reactor of gas-solid reaction, a kind of double shell gas-solid moving-burden bed reactor is provided, fail high efficiente callback and the problem of utilizing heat energy to solve in the prior art reactor.
Realize that above-mentioned purpose is a kind of double shell gas-solid moving-burden bed reactor with addressing the above problem the measure of being taked, said moving-burden bed reactor is that " Y " type binocular structure constitutes at the conversion zone Communicating with " Y " type structure that is arranged between " Y " type binocular structure; Wherein:
Said " Y " type binocular structure is first heat accumulating sections and second heat accumulating sections and corresponding first conversion zone and second conversion zone that is set up in parallel in " Y " type structure top, and the middle part is communicated with the ash discharge section of tapered structure and bottom;
Said " Y " type structure is the two fork feed pipes that are arranged at " people " font structure of the hopper connection bottom between " Y " type binocular structure;
Said first heat accumulating sections and second heat accumulating sections are that its upper end is communicated with the corresponding first turnover tracheae and the second turnover tracheae; Its turnover tracheae is communicated with unstripped gas air inlet pipe and product gas escape pipe;
Said first conversion zone and second conversion zone are that its upper end is provided with the corresponding first preheating gas branch pipe and the second preheating gas branch pipe and corresponding first coolant inlet and second coolant inlet; The lower end is provided with corresponding first coolant outlet and second coolant outlet, wherein is provided with corresponding first heat exchanger tube and second heat exchanger tube;
Said ash discharge section is to be positioned at the pyramidal structure lower end, and its top is provided with the initiation tracheae that links to each other with the first preheating gas branch pipe, the second preheating gas branch pipe, and this pipe gas outlet is provided with gas distributor.
In technique scheme; Its additional technical characterictic is that tapered structure and the horizontal plane angle at said " Y " type structure middle part are between 40 ° ~ 70 °; Apart from 1.5 ~ 2.0 times that are first conversion zone or the second conversion zone diameter, the tapered structure diameter and first conversion zone or the second conversion zone diameter ratio are between 1.1 ~ 1.2 between first conversion zone and second conversion zone.First conversion zone or second conversion zone and the first preheating gas branch pipe or the second preheating gas branch pipe diameter ratio are between 10 ~ 20.
A kind of double shell gas-solid moving-burden bed reactor provided by the present invention; Compare with existing reactors, the conversion zone set inside of this reactor heat exchanger tube, make uniformity of temperature profile in the gas-solid reaction process; Avoid localized hyperthermia, prevented the inhomogeneities of reaction; Set heat accumulating sections can in time absorb the heat of product gas, has reduced outlet temperature, can also preheating material gas, avoided energy dissipation, and realized the efficient utilization of waste heat; The design of reaction segment structure makes gas in first conversion zone or second conversion zone and solid following current, simultaneously in second conversion zone or first conversion zone and solid adverse current, has guaranteed the abundant contact between the reactant, carries out thereby react fully; The initiation tracheae that the ash discharge section is provided with links to each other with the preheating gas branch pipe, and preheating gas is transported to ash discharge section top, at this and unreacted solid reaction completely, has avoided the waste of solid material.The present invention is simple in structure, and is easy to operate, can effectively reclaim and utilize gas waste-heat, is particularly useful for having the gas-solid reaction of big fuel factor.
Description of drawings
Fig. 1 is the agent structure sketch map of apparatus of the present invention.
Among the figure: 1: the first heat accumulating sections; 2: the second heat accumulating sections; 3: the first conversion zones; 4: the second conversion zones; 5: tapered structure; 6: the ash discharge section; 7: the first heat exchanger tubes; 8: the second heat exchanger tubes; 9: hopper; 10: inlet valve; 11: two fork feed pipes; 12: the first coolant inlets; 13: the second coolant inlets; 14: the first coolant outlets; 15: the second coolant outlets; 16: the temperature survey point; 17: fire hole (manhole); 18: the unstripped gas air inlet pipe; 19: its escape pipe of product; 20: the first turnover tracheaes; 21: the second turnover tracheaes; 22: cause the gas air inlet pipe; 23: the first preheating gas branch pipes; 24: the second preheating gas branch pipes; 25: check-valves; 26: the first flow meter; 27: the first intake valves; 28: the second intake valves; 29: the first air outlet valves; 30: the second air outlet valves; 31: the first preheating air valves; 32: the second preheating air valves; 33: cause air valve; 34: the second flowmeters; 35: gas distributor; 36: ash-valve.
The specific embodiment
Make an explanation in the face of the specific embodiment of a kind of double shell gas-solid moving-burden bed reactor provided by the present invention down.
The present invention is based on existing structure of reactor and the gas-solid reaction method that is used for gas-solid reaction; Through analysis and research; One of problem of its existence be low temperature feedstock gas how by preheating, the sensible heat that how high-temperature product gas is cooled and product gas carries fails to be fully utilized; Two of problem is how to remove the unnecessary heat that is produced in the reactor, and the temperature distributing disproportionation in the reactor is even; Three of problem is to fail to select for use suitable gas flow pattern, and gas contacts insufficient with solid, and reaction not exclusively; Four of problem is that the solid material in the reactor is failed abundant complete reaction, causes waste.
The present invention is directed to the problem that above-mentioned prior art exists, the technical scheme of a kind of double shell gas-solid moving-burden bed reactor that provides, its mentality of designing is following:
(1) heat accumulating sections is set.It mainly is: the one, absorb the also heat of storage products gas, and reduce its outlet temperature; The 2nd, release heat, preheating material gas.
(2) at inside reactor heat exchanger tube is set, increases heat exchange area, regulate coolant flow; Can effectively control the temperature in the reactor; Avoid forming the high-temperature region, reactor temperature is evenly distributed, thereby prevent the inhomogeneous side reaction that causes of conversion zone internal reaction.
(3) be equipped with gas delivery control system.Through the control of this system, make gas in reactor, have the liquid form that is beneficial to gas-solid reaction: when the gas in the reactor left-half made progress or flows downward, the type of flow between gas and the solid was adverse current or following current; Gas in the reactor right half part flows downwards or upwards simultaneously, and the type of flow between gas and the solid is following current or adverse current.
(4) the preheating gas branch pipe is set.This preheating gas branch pipe can make unstripped gas and the unreacted or the not solid material reaction of complete reaction of preheating.Effectively utilize solid material, cut the waste.
The present invention is based on above-mentioned mentality of designing, the technical scheme of a kind of double shell gas-solid moving-burden bed reactor that is provided comprises feeding section, heat accumulating sections, conversion zone and ash discharge section, and has been equipped with gas delivery control system.Its described heat accumulating sections comprises first heat accumulating sections 1 and second heat accumulating sections 2; Two heat accumulating sections upper end is connected with the corresponding first turnover tracheae 20 and the second turnover tracheae 21 respectively, and the first turnover tracheae 20 is connected with unstripped gas air inlet pipe 18, product gas escape pipe 19 with the second turnover tracheae 21.Heat storage medium in the heat accumulating sections can be chosen heat storage mediums such as checker brick, heat accumulation pipe or heat-storing sphere according to the size of institute's amount of stored heat.Heat accumulating sections can be cooled off deoxidation product gas, reduces its outlet temperature, reclaims the heat that product gas carries, preheating material gas.Feeding section comprises the hopper 9 of upper end and two fork feed pipes 11 of lower end.
Distance is first conversion zone 3 or second conversion zone, 4 diameters 1.5 ~ 2.0 times between said first conversion zone 3 and second conversion zone 4.If ratio is too small, distance is too small between the two, tapered structure 5 sizes that can dwindle the conversion zone lower end, thus reduce the bearing capacity of 5 pairs of top solid materials of tapered structure, increase the weight of the bearing capacity of the gas distributor 35 of ash discharge section 6 upper ends.If ratio is excessive, two fork feed pipes 11 are elongated, and the potential energy when increasing material decline is broken easily when solid material is descended.
First conversion zone 3 and second conversion zone, 4 upper ends are provided with the corresponding first preheating gas branch pipe 23 and the second preheating gas branch pipe 24, and the other end of the first preheating gas branch pipe 23 and the second preheating gas branch pipe 24 links to each other with the initiation tracheae that links to each other with ash discharge section 6 upper ends 22.The purpose that is provided with like this is to make a part of unstripped gas after the preheating arrive the upper end and the solid reaction of ash discharge section 6 through this pipe, avoids the waste of solid material, the treating capacity of corresponding increase gas of while.This external conversion zone set inside has first heat exchanger tube 7 and second heat exchanger tube 8, and the conversion zone upper end is provided with first coolant inlet 12 and second coolant inlet 13, and the pyramidal structure lower end is provided with first coolant outlet 14 and second coolant outlet 15.When gas flows downward in first conversion zone 3 or second conversion zone 4, and be following current between the cooling agent, because just begun reaction, so temperature is not high, its following current form can reach the heat exchange requirement.Simultaneously gas second conversion zone 4 or first conversion zone 3 in on flow, and temperature is higher, and is adverse current between cooling agent and the gas at this moment, this type of flow can satisfy the heat exchange requirement here.The tapered structure of conversion zone lower end and the angle of horizontal plane are between 40 ° ~ 70 °.Angle helps the smooth decline of lime-ash in this scope, avoid lime-ash to stop up ash discharging hole.The diameter ratio of tapered section diameter and first conversion zone 3 or second conversion zone 4 is between 1.1 ~ 1.2.After gas got into tapered structure by first conversion zone 3 or second conversion zone 4, flow velocity reduced, and has increased the time of staying of gas in reactor, and after gas left tapered structure, flow velocity increased again, and the product gas that helps having reacted in time leaves reactor.First conversion zone 3 or second conversion zone 4 and the first preheating gas branch pipe 23 or the second preheating gas branch pipe, 24 diameter ratios are 10 ~ 20.Its concrete ratio should be confirmed according to the solid material content in the lime-ash.
The specific embodiment below in conjunction with 1 pair of a kind of double shell gas-solid moving-burden bed reactor provided by the present invention of accompanying drawing is made further explanation.
Identical like accompanying drawing 1, the first heat accumulating sections 1 with second heat accumulating sections, 2 structures, link to each other with second conversion zone, 4 upper ends with corresponding first conversion zone 3 through flange respectively.First heat accumulating sections 1 links to each other with the second turnover tracheae 21 with the corresponding first turnover tracheae 20 respectively with second heat accumulating sections, 2 upper ends, and the first turnover tracheae 20 is connected with product gas escape pipe 19 with unstripped gas air inlet pipe 18 through threeway with the second turnover tracheae 21.
First conversion zone 3 and second conversion zone, 4 upper ends are provided with corresponding first coolant inlet 12 and second coolant inlet 13, and its coolant inlet upper end is provided with the corresponding first preheating gas branch pipe 23 and the second preheating gas branch pipe 24.Be provided with two fork feed pipes 11 at the middle part of first conversion zone 3 and second conversion zone 4.The tapered structure of conversion zone bottom is provided with first coolant outlet 14 and second coolant outlet 15.
In the conversion zone set inside corresponding first heat exchanger tube 7 and second heat exchanger tube 8 are arranged.The conversion zone bottom is the tapered structure 5 that becomes 40 ° ~ 70 ° of angles with horizontal plane.Tapered structure 5 diameters and first conversion zone 3 or second conversion zone, 4 diameter ratios are between 1.1 ~ 1.2.Ash discharge section 6 tops are provided with the initiation tracheae, and should link to each other with the second preheating gas branch pipe 24 with the first preheating gas branch pipe 23 by pipe, and this pipe gas outlet is provided with gas distributor 35; The tapered structure of gas distributor 35 upper ends is provided with fire hole (manhole) 17 and temperature survey point 16.
Hopper 9 is arranged at two fork feed pipes, 11 tops, and links to each other with two fork feed pipes 11 through two fork portions.
Two fork two ends, feed pipe 11 below link to each other with second conversion zone 4 with first conversion zone 3.
Is that example is explained to operating process of the present invention below in conjunction with accompanying drawing 1 with the coal bed gas deoxidation, but the present invention is not limited only to this example.
Open and cause air valve 33, first air outlet valve 29 and second air outlet valve 30, cause gas through causing gas air inlet pipe 22, gas distributor 35 entering first conversion zone 3 and second conversion zones 4; Open inlet valve 10, deoxidier arrives first conversion zone 3 and second conversion zone 4 through two fork feed pipes 11, closes inlet valve 10 then.Deoxidier begins to heat up, and when the temperature of deoxidier bed reaches 300 ℃, closes and causes the air valve 33 and second air outlet valve 30, opens first intake valve 27 simultaneously, begins to feed unstripped gas.
Unstripped gas gets into conversion zone and begins deoxygenation through check-valves 25, first flow meter 26, first intake valve 27, turnover tracheae 20, first heat accumulating sections 1 successively; After reaction was accomplished, product gas got into second heat accumulating sections 2, and its heat that carries is absorbed and storage by second heat accumulating sections 2, left reactor through turnover tracheae 21, first air outlet valve 29 with product gas escape pipe 19 then.
Close first intake valve 27, first air outlet valve 29; Open second intake valve 28, second air outlet valve 30, unstripped gas gets into second heat accumulating sections 2 by preheating through check-valves 25, first flow meter 26, second intake valve 28, the second turnover tracheae 21, gets into conversion zone and begins deoxygenation; After deoxidation is accomplished; Product gas is through first heat accumulating sections 1, and its heat that carries is absorbed storage, leaves reactor through the first turnover tracheae 20, second air outlet valve 30, product gas escape pipe 19 then.
Close second intake valve 28, second air outlet valve 30, open first intake valve 27, first air outlet valve 29, repeat aforesaid operations.When deoxygenation carries out, feed cooling agent, the temperature of control conversion zone avoids forming the high-temperature region.Open ash-valve 36 ash discharges in per 15 minutes, open inlet valve 10 feed supplements simultaneously.
Claims (5)
1. double shell gas-solid moving-burden bed reactor is characterized in that:
Said moving-burden bed reactor is that " Y " type binocular structure and " Y " type structure of falling of being arranged between " Y " type binocular structure constitute at the conversion zone Communicating;
Said " Y " type binocular structure is first heat accumulating sections (1) and second heat accumulating sections (2) and corresponding first conversion zone (3) and second conversion zone (4) that is set up in parallel in " Y " type structure top, and the middle part is communicated with the ash discharge section (6) of tapered structure (5) and bottom;
Said " Y " type structure is the two fork feed pipes (11) that are arranged at " people " font structure of hopper (9) the connection bottom between " Y " type binocular structure;
Said first heat accumulating sections (1) and second heat accumulating sections (2) are that its upper end is communicated with the corresponding first turnover tracheae (20) and the second turnover tracheae (21); Its turnover tracheae is communicated with unstripped gas air inlet pipe (18) and product gas escape pipe (19);
Said first conversion zone (3) and second conversion zone (4) are that its upper end is provided with the corresponding first preheating gas branch pipe (23) and the second preheating gas branch pipe (24) and corresponding first coolant inlet (12) and second coolant inlet (13); The lower end is provided with corresponding first coolant outlet (14) and second coolant outlet (15), wherein is provided with corresponding first heat exchanger tube (7) and second heat exchanger tube (8);
Said ash discharge section (6) is to be positioned at pyramidal structure (5) lower end, and its top is provided with the initiation tracheae (22) that links to each other with the first preheating gas branch pipe (23), the second preheating gas branch pipe (24), and this pipe gas outlet is provided with gas distributor (35).
2. moving-burden bed reactor as claimed in claim 1, its said pyramidal structure (5) and horizontal plane angle are between 40 ° ~ 70 °.
3. moving-burden bed reactor as claimed in claim 1, distance is first conversion zone (3) or second conversion zone (4) diameter 1.5 ~ 2.0 times between its said first conversion zone (3) and second conversion zone (4).
4. moving-burden bed reactor as claimed in claim 1, the diameter ratio of its said tapered structure (5) diameter and first conversion zone (3) or second conversion zone (4) is between 1.1 ~ 1.2.
5. moving-burden bed reactor as claimed in claim 1, its said first conversion zone (3) or second conversion zone (4) and the first preheating gas branch pipe (23) or second preheating gas branch pipe (24) diameter ratio are between 10 ~ 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210159461.4A CN102698660B (en) | 2012-05-22 | 2012-05-22 | Gas-solid moving bed reactor with double cylinders |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210159461.4A CN102698660B (en) | 2012-05-22 | 2012-05-22 | Gas-solid moving bed reactor with double cylinders |
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| Publication Number | Publication Date |
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| CN102698660A true CN102698660A (en) | 2012-10-03 |
| CN102698660B CN102698660B (en) | 2014-01-29 |
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| CN201210159461.4A Expired - Fee Related CN102698660B (en) | 2012-05-22 | 2012-05-22 | Gas-solid moving bed reactor with double cylinders |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0399416A1 (en) * | 1989-05-23 | 1990-11-28 | Kawasaki Jukogyo Kabushiki Kaisha | Method for removal of dust contained in a gas and for reaction of a toxic component of said gas |
| US5169607A (en) * | 1990-02-20 | 1992-12-08 | Avt Anlagen- Und Verfahrenstechnik Gmbh | Moving-bed reactor, in particular for the treatment of flue gases |
| JPH1171196A (en) * | 1997-08-25 | 1999-03-16 | Hitachi Ltd | Production of single crystal structure and device for producing the same |
| CN102240527A (en) * | 2011-04-21 | 2011-11-16 | 浙江大学 | Apparatus with multistage moving bed reaction system for technology of preparing propylene by methanol |
-
2012
- 2012-05-22 CN CN201210159461.4A patent/CN102698660B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0399416A1 (en) * | 1989-05-23 | 1990-11-28 | Kawasaki Jukogyo Kabushiki Kaisha | Method for removal of dust contained in a gas and for reaction of a toxic component of said gas |
| US5169607A (en) * | 1990-02-20 | 1992-12-08 | Avt Anlagen- Und Verfahrenstechnik Gmbh | Moving-bed reactor, in particular for the treatment of flue gases |
| JPH1171196A (en) * | 1997-08-25 | 1999-03-16 | Hitachi Ltd | Production of single crystal structure and device for producing the same |
| CN102240527A (en) * | 2011-04-21 | 2011-11-16 | 浙江大学 | Apparatus with multistage moving bed reaction system for technology of preparing propylene by methanol |
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| CN102698660B (en) | 2014-01-29 |
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