CN205939123U - Dry distillation system that circulating fluidized bed grey distributor of heat and circulating fluidized bed burning and rotary kiln pyrolysis combined together - Google Patents

Abstract

The utility model relates to a dry distillation system that circulating fluidized bed grey distributor of heat and circulating fluidized bed burning and rotary kiln pyrolysis combined together, include circulating fluidized bed, cyclone, the solid heat carrier dry distillation machine of following the grey direction of advance of heat and setting gradually, the cyclone import is connected to the circulating fluidized bed exhanst gas outlet, and cyclone dust outlet connects the grey distributor's of heat receiving port, the grey distributor's of heat loop exit passes through material returning device and connects circulating fluidized bed dense region, the mutual interference problem of existence between regulation allocation problem and circulating fluidized bed boiler system and the rotary kiln dry distillation system of process mesocycle ash has mainly been solved, the stability of process is improved, not only the heat of usable circulating fluidized bed boiler heat ash carries out the interior hot type dry distillation of solid heat carrier, still can effectively utilize the heat in the hot flue gas of boiler to carry out the outer hot type dry distillation of gaseous heat carrier, but unnecessary hot flue gas is through waste heat recovery still byproduct steam and middle pressure steam, system security nature is higher, energy utilization is higher.

Description

A kind of recirculating fluidized bed heat ash distributor and CFBC and rotary kiln heat The distillation system that solution combines

Technical field

This utility model belong to derived energy chemical technical field and in particular to a kind of recirculating fluidized bed heat ash distributor and will CFBC and rotary kiln pyrogenation combine and the carbonaceous materials such as coal, oil shale carry out the process system of low temperature distillation.

Background technology

Coal low temperature distillation is one of coal carbonization method, specifically refers in relatively low heating final temperature（500~600℃）And every Absolutely under conditions of air, make coal decomposes be semicoke, the process of coalite tar, coal gas and pyrolysis water.

By the difference of mode of heating, the method for industrial low temperature distillation is broadly divided into external-heat, internal heat type and inside and outside mixing Three kinds of formula.By the difference of heat carrier form, gas heat carrier, solid thermal carriers and three kinds of gas-solid heat carrier can be divided into.

For heating up mode, external-heat retorting technique heat carrier and coal are not directly contacted with, and the thermal efficiency is low, and there is heat transfer Unbalanced phenomena.And internal heat type retorting technique heat carrier and raw material directly contact, thermal efficiency height, heat transfer equilibrium, raw material heats up fast Speed, pyrolysis time is short, and secondarily cracking tar is few, and oil yield is high.But in retort process, due to the importing of a large amount of heat carriers, deposit Big, the low shortcoming of dry distillation efficiency in equipment operating load.

For heat carrier form, gas heat carrier dry distilling has internal heat type and two kinds of techniques of external-heat.Internal-heating gas The heat smoke that fuel combustion is typically produced by heat carrier pyrolysis technique is introduced directly in pyrolysis oven, but makes pyrolysis while pyrolysis Coal gas significantly dilutes it is impossible to obtain the higher coal gas product of quality, and system dust removing load is larger.Hot solid carrier devolatilization with Directly it is mixed into heat exchange mode, heat exchange efficiency is high, gas quality is good, receives the very big concern in field between material.Typically For, gas heat carrier is applied to external-heat low temperature distillation, and solid thermal carriers are applied to internal heat type low-temperature dry distillation.

At present, solid heat carrier pyrolysis technology can be divided into heat carrier and two kinds of external heat carrier in system again, as the term suggests, As heat carrier, conventional has circulating ash and semicoke to the material that system interior-heat carrier technique is produced using in technique, and external heat carries Heat carrier needed for body technique is provided by outside system, and conventional has high-temperature ceramicss ball.By contrast, using thermal decomposition product in system During as heat carrier, the heat of high temperature of system generation can be made full use of it is not necessary to additionally add solid-solid separation device, system sets Standby simple, small investment, energy utilization efficiency is high, and the loss problem without worry heat carrier.In addition, being carried using system interior-heat Body is also higher to the adaptability of pyrolysis coal, has preferable practicality.

Dry distilling skill based on fluid bed generally can be divided into the retorting technique as thermal source for the solid thermal carriers in system again Art and the retorting technique based on moving bed etc..Wherein, fluidization, as a kind of coal combustion technology of high effect cleaning, has Have the advantages that it is unique.First, fluidized-bed combustion boiler ignition temperature is 900 DEG C about, and nitrogen oxide emission is low.Same in burning When can achieve desulfuration in furnace, the operating cost of desulfurization is low and efficiency high.Secondly, the subject range to Coal rank for the fluidized-bed combustion boiler Extensively, especially to low heat value colm, equally there is good adaptability.In addition, the ash content carbon that fluidized-bed combustion boiler produces is low, No cinder pollution, and the adjustable elastic of burning load is big, obtains in fields such as station boiler, Industrial Boiler, offal treatments Apply to extensive.

In terms of gas retort, existing gas retort is divided into fixed bed gas retort, fluidized bed dry distillation stove, revolution kiln drying according to the type of furnace Furnace and gas combustion retort four big class.Wherein, rotary kiln gas retort, the strong adaptability of raw materials size, adapt to different types of Carbonaceous material.The revolution of kiln body can make carbonaceous material be sufficiently mixed and constantly crush, heat and mass efficiency high, and pyrolysis is fully.Only By rotary kiln rotating speed and inclination angle just can time of staying in kiln for the flexible carbonaceous material, mixing intensity and treating capacity, heat The solution extent of reaction is easily controlled, and has broad application prospects.Additionally, rotary kiln is suitable for multiple heating mode, have very well Embeddability, distillation process can be developed jointly with gas heat carrier method and solid heat carrier method.

This patent by CFBB and rotary kiln distillation system are combined, using boiler produce heat ash and Heat smoke carries out low temperature distillation as heat carrier, has both included the retorting technique of gas heat carrier external-heat, includes simultaneously again The retorting technique of solid thermal carriers internal heat type, and in the middle of internal heat type hot solid carrier devolatilization, using the heat ash of system itself Use as heat carrier in system, multiple for low temperature distillation field advantage method for destructive distillation are organically combined, fully excavate each technology excellent Gesture, is simultaneously introduced steam, generating multi-production process, has wide in the clean utilization field of the carbonaceous materials such as coal, oil shale Development prospect.

Patent CN102533296A discloses a kind of Oil shale rotary kiln dry distilling and CFBC technique, will turn round Kiln drying furnace is organically combined with recirculating fluidized bed, and oil shale particle is followed with the thermal cycle ash from CFBB and part The mixing of circulation fluidized bed boiler bottom ash is sent into rotary kiln dry distilling and is produced shale oil and dry distillation gas.

The defect that existing correlation technique exists

（1）Prior art shale ashes collecting tank realizes the distribution of heat ash by discharge valve.Firstly, since the burning of boiler Situation is that there is fluctuation, and the ash quantity of circulating ash there is also fluctuation, and that is, the ash quantity fed of shale ashes collecting tank is that there is fluctuation.Its Secondary, due to ash gentle in fluctuation, the ash quantity fed of retorting machine need corresponding adjust, the stablizing of guarantee retorted product quality Property.Again, entering boiler air temperature in heat exchanger affects the combustion position of boiler, and its temperature also need to be adjusted by ash quantity and grey temperature Section.Finally, the returning charge amount in material-returning device affects the combustion position of boiler.In summary it can be seen, due in shale ashes collecting tank Enter ash quantity and go out ash quantity and there are multiple uncertainties, adjusted with a feed bin merely, technology stability is poor, if hot in feed bin Ash is very few, the stable operation of the equipment such as impact retorting machine.The too high normal operation by impact whirlwind of material position, and then affect boiler Stable burning.And in actual production process, the material position in feed bin should keep stable it is impossible to there is the trend changing always.

（2）The pyrolysis char of distillation system is directly passed through in boiler by semicoke collecting tank or gas-solid separating device, a side Face does not adjust the device of discharge quantity, and the fluctuation of retorting machine discharge quantity will produce disturbance to the burning of boiler.Meanwhile, boiler system The gas phase of system and distillation system does not have strict separating.In actual production, it is necessary to assure destructive distillation device and downstream gas purification System be micro-negative pressure operation, using gas cleaning system downstream gas fan by outside coal gas carrying device.And dry distilling in technique Machine and boiler gas phase UNICOM, will lead to downstream gas fan load to increase, simultaneously impact gas quality and security of system.

（3）High-temperature hot ash and pyrolysis feed coal mix in a mixer, then send into rotary kiln pyrogenation by auger.Due to heat Grey temperature is too high, begins to be pyrolyzed in the moment of contact, produces a large amount of raw coke oven gas, and blender downstream is auger, no matter mixes Clutch or auger, narrow space, gaseous pressure is larger, leads to generation coal gas upstream to be collaborated, and has gas phase to leak in valve etc. Leak at point and be condensed out tar.On the one hand, it is unfavorable for the steady production of device, affect the normal work of the equipment such as discharge valve, Putty seriously may be produced.On the other hand, the safety stability of technique is relatively low.

（4）Boiler is not provided with single heat carrier and coal-fired feed system, when driving and boiler combustion situation need to adjust Must be adjusted by retorting machine feed system during section, be unfavorable for the stable operation of distillation system, simultaneously because can not one-side adjust Section steam generator system or the inlet amount of distillation system, the less stable of package unit, the feedback time of regulation is long, especially can lead Cause driving difficulty larger.

Content of the invention

For the technical problem existing for the low temperature distillation process of the carbonaceous materials such as coal, oil shale, the utility model proposes The distillation system that a kind of recirculating fluidized bed heat ash distributor and CFBC are combined with rotary kiln pyrogenation.

This utility model employs the following technical solutions：

As one side of the present utility model, a kind of recirculating fluidized bed heat ash distributor, including carrier and an appearance Receive the cavity of flying dust, described cavity includes reception cavity, torus, conveyor chamber, and described reception cavity connects with conveyor chamber and centrage Overlap, described torus pass through to circulate inlet communication reception cavity and/or conveyor chamber, and described reception cavity is included for receiving flying dust Receiving port, described torus include the loop exit for conveying flying dust to fluid bed, and described conveyor chamber is included for conveying Device conveys the delivery port of flying dust, the angle β of the centrage of the centrage of circulation import and loop exit and receiving port and delivery port For acute angle.

Preferably, for the ease of the design of cavity, also allow for installing it is easy to heat flowing in cavity for the ash, described reception The cross-sectional area of chamber any place is identical, described conveyor chamber any place cross-sectional area is identical, described torus any place Cross-sectional area is identical.

Preferably, in order to cache more heat ash it is ensured that heat ash buffer memory it is ensured that hot solid carrier devolatilization machine enter ash Amount, described conveyor chamber, its have a cross-sectional area be more than conveyor chamber body cross-section area the first buffering chamber, described first Buffering chamber can extending partially or entirely along conveyor chamber body.

Preferably, in order to adapt to the actual installation of equipment and production and application needs, described reception cavity, conveyor chamber, torus Cross section be circle, ellipse, tetragon, polygonal any one or a few.

Preferably, in order that the hot ash accumulating circulation inlet is more convenient for entering torus, described torus, it is close The cross-sectional area increasingly greater than away from circulation inlet for the cross-sectional area of circulation inlet.

As other side of the present utility model, including the recirculating fluidized bed setting gradually along heat ash direction of advance, rotation Wind cleaner unit, hot solid carrier devolatilization machine, described recirculating fluidized bed exhanst gas outlet connects cyclone dust extractor import, and described whirlwind removes Dirt device dust export connects the receiving port of heat ash distributor, and the loop exit of described heat ash distributor is by material-returning device even Connect recirculating fluidized bed emulsion zone；First carrier of described heat ash distributor is with the feed end of hot solid carrier devolatilization machine even Connect；First batcher by treat dry distilling carbonaceous material send into hot solid carrier devolatilization machine in heat ash mixed pyrolysis；Described solid The solids exit end of heat carrier retorting machine is connected with recirculating fluidized bed emulsion zone；Described hot ash be equipped be set to described ciculation fluidized Any one of bed heat ash distributor.

Optionally, in order to solve the isolating problem of gas phase between recirculating fluidized bed and hot solid carrier devolatilization machine, described solid The 5th buffering chamber being sequentially connected is passed through at the solids exit end of body heat carrier retorting machine and the 5th carrier is close with recirculating fluidized bed Phase region connects.First buffering chamber of feed end of cooperation hot solid carrier devolatilization machine and the first carrier, by recirculating fluidized bed pot The gas phase of the high temperature gas phase of stove and hot solid carrier devolatilization machine is kept apart.

Optionally, in order to further purify pyrolysis oil gas, the pyrolysis oil gas vent of described hot solid carrier devolatilization machine is even Connect the first dust arrester.

Optionally, in general, in order to meet different needs, described first dust arrester is metal film dust-remover or washing Cleaner unit.

Optionally, in order to preferably store carbonaceous material and adjust the carbonaceous materials such as coal, oil shale inlet amount it is ensured that The stablizing of system, the upstream of described first batcher is provided with the second buffering chamber of storage carbonaceous material.

Optionally, in order to solve to be not suitable in some engineer applied producing steam and steam-electric power, different productions are adapted to Demand, improves capacity usage ratio, and described cyclone dust extractor exhanst gas outlet connects gas heat carrier retorting machine, and the second batcher will be treated The carbonaceous material of dry distilling sends into pyrolysis in gas heat carrier retorting machine；Solids exit end one tunnel of described gas heat carrier retorting machine It is connected with recirculating fluidized bed emulsion zone, the pyrolysis product such as another rood to such as coke.

Optionally, the solids exit end of gas heat carrier retorting machine pass through the 4th buffering chamber that is sequentially connected and carrier with Recirculating fluidized bed emulsion zone connects.

Optionally, in order to preferably store carbonaceous material and adjust the inlet amount of carbonaceous material it is ensured that stablizing of system, The upstream of the second batcher is provided with the 3rd buffering chamber of storage carbonaceous material.

Optionally, in order to further purify pyrolysis coal gas, the gas exit end of gas heat carrier retorting machine connects second Dust arrester.

Optionally, in general, in order to meet different needs, described second dust arrester is metal film dust-remover or washing Cleaner unit.

Optionally, in order to produce steam and the convenient heat smoke air inflow adjusting gas heat carrier retorting machine, air heat The flue gas outlet side of carrier retorting machine is sequentially connected the first waste heat boiler and the first smoke induced draught fan.

Optionally, in order to produce steam, cyclone dust extractor exhanst gas outlet is also sequentially connected the second waste heat boiler and the second cigarette Gas air-introduced machine.

Optionally, in order to solve to drive or other need the condition of production that recirculating fluidized bed individually adjusts, reduce adjust difficult It is ensured that the stability of system, described recirculating fluidized bed is provided with independent carbonaceous material charging gear to degree and solid heat carrier feed fills Put；Described recirculating fluidized bed connects lag cooler.

Optionally, hot solid carrier devolatilization machine is solid thermal carriers rotary dry distillation machine.

Optionally, gas heat carrier retorting machine is gas multitube rotary retorting machine.Gas multitube rotary distillation system is Shen Ask someone independent development declare the retorting technique of patent, Patent No. 201110269683.7, disclose a kind of single-stage fine coal many Pipe revolution low temperature distillation technique and system, has that fine coal treating capacity is big, carbonizing gas treating capacity is little, and tar dust content is low, coal The advantages of gas calorific value is high.

This technology mainly solves regulation assignment problem and the circulating fluidized bed boiler systems of circulating ash in technical process The stability interfering problem, improve technical process existing and rotary kiln distillation system between.This technology not only can profit Carry out solid thermal carriers internal heat type dry distilling with the heat of CFBB Hot Ash, also can be in effectively utilizes boiler hot flue gas Heat carries out gas heat carrier external-heat dry distilling, and unnecessary heat smoke also can byproduct steam and middle pressure steam through waste heat recovery.No Only improve capacity usage ratio, solve simultaneously and be not suitable in some engineer applied producing steam and steam-electric power, or to two The limited situation of the production capacity of person.

For the low temperature distillation of coal, this technique stable and process operation situation while ensureing product quality is more easy to In regulation, the safety of system is higher, and capacity usage ratio is higher.And there are different demands occasion, this technique for product category Promoted extension wider.

Brief description

The structure of the distillation system that Fig. 1 is combined with rotary kiln pyrogenation for a kind of CFBC of this utility model is shown It is intended to.

Fig. 2 is a kind of structural representation of this utility model heat ash distributor.

Fig. 3 is another kind of structural representation of this utility model heat ash distributor.

Fig. 4 is another kind of structural representation of this utility model heat ash distributor.

Fig. 5 is another kind of structural representation of this utility model heat ash distributor.

Fig. 6 is another kind of structural representation of this utility model heat ash distributor.

In figure：1st, 24,25- raw material；2- heat carrier；3- heat carrier buffer storage；4- raw material buffer storage；The solid heat carrier of 5- Charging gear；6- carbonaceous material charging gear；7- recirculating fluidized bed；8- steam；9- second waste heat boiler；10- the first waste heat pot Stove；11- second smoke induced draught fan；12- first smoke induced draught fan；13- cyclone dust extractor；14- first buffering chamber；15- second delays Storage, 16- the 3rd buffering chamber；17- the 4th buffering chamber；18- the 5th buffering chamber；19- first carrier；20- the 5th carrier； 22- the 4th carrier；37- carrier；21- heat ash distributor；26- material-returning device；27- hot solid carrier devolatilization machine；28- One dust arrester；29- second dust arrester；23- first batcher；30- second batcher；31- gas heat carrier retorting machine； 32- high-temperature oil gas；33- lag cooler；34- lime-ash；35- flue gas；36- steam；38- multitube retorting machine smoke inlet；39- multitube is done Evaporate machine exhanst gas outlet；40- gas exit；101- receiving port；102- loop exit；103- delivery port；104- circulates import；110- Reception cavity；111- conveyor chamber；112- torus；120- cavity.

Specific embodiment

With reference to Figure of description 2-5, as one side of the present utility model, a kind of hot ash of recirculating fluidized bed is equipped with Put, including the cavity 120 of the first carrier 19 and a receiving flying dust, cavity 120 includes reception cavity 110, torus 112, conveying Chamber 111, reception cavity 110 connects with conveyor chamber 111 and centrage overlaps, and torus 112 pass through to circulate import 104 connection reception cavity 110 and/or conveyor chamber 111, reception cavity 110 includes the receiving port 101 for receiving flying dust, and torus 112 are included for stream Change the loop exit 102 that bed conveys flying dust, conveyor chamber 111 includes the delivery port 103 for conveying flying dust to the first carrier 19, Circulation import 104 and the centrage of loop exit 102 are acute angle with the angle β of receiving port 101 and the centrage of delivery port 103.

Preferably, as shown in Fig. 2 design for the ease of cavity, also allow for installing it is easy to stream in cavity for the heat ash Dynamic, the cross-sectional area of reception cavity 110 any place is identical, and the cross-sectional area of conveyor chamber 111 any place is identical, torus 112 The cross-sectional area of any place is identical, and based on this design, the hot ash of whereabouts constantly accumulates, first when defeated in conveyor chamber 111 When sending the hot ash in chamber 111 to accumulate circulation import 104 position, hot ash will slip into material-returning device 26 by torus 112 automatically, Unnecessary hot ash is sent back to recirculating fluidized bed 7.Conveyor chamber 111 shown in Fig. 2 can play the effect of caching heat ash.

As shown in Figure of description 3,4, further, in order to can cache more heat ash it is ensured that heat ash buffer memory, Ensure the ash quantity fed of hot solid carrier devolatilization machine, conveyor chamber 111, can have a cross-sectional area and be more than conveyor chamber 111 body First buffering chamber 14 of cross-sectional area, described first buffering chamber 14 can extend to conveyor chamber 111 body along conveyor chamber 111 body Part or all of.Shown in Figure of description 3, the first buffering chamber 14 extends to conveyor chamber 111 body along conveyor chamber 111 body Part；Shown in Figure of description 4, the first buffering chamber 14 extends to the whole of conveyor chamber 111 body along conveyor chamber 111 body.The One buffering chamber 14 is used for caching heat ash it will be understood that the shape of the first buffering chamber 14 is also dependent on practical situation flexible design, example As shown in figure 3, the first buffering chamber 14 is cuboid for upper end, its lower end is straight tube cavity；As shown in figure 4, the first buffering chamber 14 is cuboid for upper end, and lower end is bucket-shaped.

When the first buffering chamber 14 material full to the first buffering chamber 14 top or the first half and at overflowing to circulation import 104 when, Automatically slipped into material-returning device 26 by torus 112, unnecessary hot ash is sent back to recirculating fluidized bed 7.

Preferably, as seen in figs. 5-6, torus 112, its cross-sectional area at circulation import 104 is increasingly greater than remote Cross-sectional area away from circulation import 104, this design, make accumulation be more convenient for entering circulation to the hot ash at circulation import 104 In chamber 112.It will of course be understood that, its conveyor chamber 111, it is possible to have it is horizontal that a cross-sectional area is more than conveyor chamber 111 body First buffering chamber 14 of area of section, the shape of the first buffering chamber 14 is also dependent on practical situation flexible design, such as Fig. 3, Fig. 4 The first shown buffering chamber 14.

Preferably, in order to adapt to the actual installation of equipment and production and application needs, reception cavity 110, conveyor chamber 111, circulation The cross section in chamber 112 be circle, ellipse, tetragon, polygonal any one or a few.

As another aspect of the present utility model, the dry distilling system that a kind of CFBC is combined with rotary kiln pyrogenation System, with reference to Figure of description 1, including the recirculating fluidized bed 7 setting gradually along heat ash direction of advance, cyclone dust extractor 13, solid Heat carrier retorting machine 27, described recirculating fluidized bed 7 exhanst gas outlet connects cyclone dust extractor 13 import, and cyclone dust extractor 13 dust goes out Mouth connects the receiving port 101 of heat ash distributor, and the loop exit 102 of the grey distributor of heat passes through material-returning device 26 and connects circulation Fluid bed 7 emulsion zone；First carrier 19 of heat ash distributor is connected with the feed end of hot solid carrier devolatilization machine 27；First The carbonaceous material treating dry distilling is sent in hot solid carrier devolatilization machine 27 and heat ash mixed pyrolysis by batcher 23；Solid thermal carriers are done The solids exit end evaporating machine 27 is connected with recirculating fluidized bed 7 emulsion zone；Hot ash is equipped with and is set to following described in above-mentioned first aspect Any one in ring fluid bed heat ash distributor.

Further, the 5th buffering chamber 18 and the 5th being sequentially connected is passed through at hot solid carrier devolatilization machine 27 solids exit end Carrier 20 is connected with recirculating fluidized bed 7 emulsion zone.

Start-up, using solid heat carrier charging gear 5, carbonaceous material charging gear 6, will be buffered in heat carrier caching dress Put solid thermal carriers 2 in 3（The quartz sand of granularity≤25mm）With the raw material 1 being buffered in particle diameter≤25mm in raw material buffer storage 4 It is added separately in recirculating fluidized bed 7, is passed through combustion air, so that raw material is fully burnt in CFBB.Burning produces Carry the high-temperature flue gas of heat ash secretly（600~1000℃）, carry out dedusting using cyclone dust extractor 13, high-temperature flue gas and hot ash carried out Separate, heat ash enters the receiving port 101 of heat ash distributor 21 by cyclone dust extractor 13 dust export.

As shown in figures 1 to 6, the receiving port 101 of reception cavity 110 receives the detached heat ash of cyclone dust extractor 13, the heat ash of whereabouts Constantly accumulate in conveyor chamber 111 first.When heat ash accumulation reaches the position of circulation import 104, hot ash will slip to automatically Torus 112, the loop exit 102 of torus 112 is connected with material-returning device 26, and material-returning device 26 exports and recirculating fluidized bed 7 Connect, unnecessary hot ash is sent back to recirculating fluidized bed 7.The heat ash of accumulation in conveyor chamber 111（500~900℃）By delivery port The control of the first carrier 19 of 103 connections is delivered in hot solid carrier devolatilization machine 27.

Selectable, as shown in Figure 3-4, conveyor chamber 111, can have a cross-sectional area and be more than conveyor chamber 111 body The first buffering chamber 14, described first buffering chamber 14 can extend to the part of conveyor chamber 111 body or complete along conveyor chamber 111 body Portion.So, when the first buffering chamber 14 material full to the first buffering chamber 14 top or the first half and at overflowing to circulation import 104 when, Automatically slipped into material-returning device 26 by torus 112, unnecessary hot ash is sent back to recirculating fluidized bed 7.In addition, as seen in figs. 5-6, follow Ring cavity 112, its cross-sectional area at circulation import 104 is increasingly greater than away from the cross-sectional area circulating at import 104, circulation The shape in chamber 112 can be arranged according to the practical situation of production run.

Meanwhile, the raw material 24 of particle diameter≤25mm, after the first batcher 23 conveying, is added to solid thermal by another elephant trunk In carrier retorting machine 27.Under the revolution stirring action of hot solid carrier devolatilization machine 27, raw material and hot ash are sufficiently mixed and are pyrolyzed, Produce semicoke and oil gas, wherein pyrolysis time controlled at 5 ~ 30 minutes, the gas temperature that pyrolysis produces, at 300 ~ 700 DEG C, is pyrolyzed Produce semicoke temperature at 300 ~ 700 DEG C.The semicoke that pyrolysis produces and heat ash send into the 5th of hot solid carrier devolatilization machine 27 bottom In buffering chamber 18, the 5th buffering chamber 18 lower end connects the 5th carrier 20, and the semicoke that pyrolysis produces and heat ash are through the 5th carrier 20 return circulating fluidized bed boiler systems emulsion zones.

It should be noted that arranging conveyor chamber 111 and the first carrier 19 in hot solid carrier devolatilization machine 27 feed end, when So, conveyor chamber 111 can preferably employ the first buffering chamber 14, and the 5th buffering chamber 18 being sequentially connected is passed through at solids exit end simultaneously It is connected with recirculating fluidized bed 7 emulsion zone with the 5th carrier 20.Can be by the high temperature gas phase of recirculating fluidized bed 7 and solid thermal carriers The gas phase of retorting machine 27 is kept apart, and improves stability and the safety of system.

Preferably, the recirculating fluidized bed 7 that this utility model provides is provided with independent carbonaceous material charging gear 6 and solid heat carries Body charging gear 5；Described recirculating fluidized bed bottom connects lag cooler 33.Solve driving or other need CFBB The condition of production individually adjusting, adjusts complexity and substantially reduces, and needs individually to adjust boiler combustion situation some Under production status, considerable influence will not be produced to two sets of distillation systems.

Hot solid carrier devolatilization machine 27 is provided with independent charging gear：First batcher 23, the first batcher 23 upper Trip is provided with the second buffering chamber 15 of storage carbonaceous material.Enter for heat ash and raw material and easily shift to an earlier date before hot solid carrier devolatilization system It is pyrolyzed the problem upstream collaborated, raw material and hot ash are divided into hot solid carrier devolatilization machine 27, effectively avoid because shifting to an earlier date It is pyrolyzed the problem that the coal gas leading to is collaborated upwards.

Preferably, hot solid carrier devolatilization machine 27 is solid thermal carriers rotary dry distillation machine.

Preferably, Gu heat carrier charging gear 5, carbonaceous material charging gear 6, the first batcher 23, the second batcher 30 Using quantitative spiral conveyor, it is easy to control the addition of raw material and heat carrier.

It should be noted that the link position of material-returning device 26 and recirculating fluidized bed 7 and the 5th carrier 20 and recycle stream The link position setting that can overlap changing bed 7 can also be provided separately.

Further, the high-temperature flue gas of dedusting are separated by cyclone dust extractor 13（500~1000℃）It is sent at two, at one even Connect the second waste heat boiler 9, for byproduct steam 8, the other end of waste heat boiler 9 connects the second smoke induced draught fan 11；Another place by Multitube retorting machine smoke inlet 38 enters gas heat carrier retorting machine 31.Using the second batcher 30 by grain in the 3rd buffering chamber 16 The raw material of degree≤25mm is sent in gas heat carrier retorting machine 31, is pyrolyzed raw material using the heat that high-temperature flue gas provide, Pyrolysis time controlled at 5 ~ 30 minutes, produced semicoke and coal gas, product temperatur is at 300 ~ 700 DEG C.The semicoke that pyrolysis produces is in gas Buffer in 4th buffering chamber 17 of body heat carrier retorting machine 31 bottom, a road returns circulating fluidized bed boiler systems through carrier 37 Emulsion zone, separately leads up to the 4th carrier 22 and obtains as the pyrolysis product such as coke.Through gas heat carrier retorting machine 31 High-temperature flue-gas reduce, and form middle temperature flue gas（300~800℃）, discharged by multitube retorting machine exhanst gas outlet 39, be sent to first Waste heat boiler 10, for producing steam 36, the other end of waste heat boiler 10 connects the first smoke induced draught fan 12.Two sets of waste heat boilers In after low-temperature flue gas 35 out converge, be jointly sent to flue gas purification system, finally emptied by chimney.The pyrolysis of multitube retorting machine is produced Raw coal gas is discharged by gas exit 40, produces coal gas and closes with hot solid carrier devolatilization machine after metal film dust-remover dedusting And, collectively as oil gas product transmitting system.

Preferably, the 4th buffering chamber 17 being sequentially connected and conveying are passed through in the solids exit end of gas heat carrier retorting machine 31 Device 37 is connected with recirculating fluidized bed 7 emulsion zone.

The upstream of the second batcher 30 is provided with the 3rd buffering chamber 16 of storage carbonaceous material.

It should be noted that the flue gas of gas heat carrier retorting machine 31 can be adjusted by controlling the first smoke induced draught fan 12 Amount is it is ensured that the stablizing of gas heat carrier retorting machine 31.

Preferably, gas heat carrier retorting machine 31 selects gas multitube rotary retorting machine.

Preferably, in order to further purify pyrolysis oil gas, the pyrolysis oil gas vent of hot solid carrier devolatilization machine 27 connects First dust arrester 28；The gas exit end of gas heat carrier retorting machine 31 connects the second dust arrester 29, in order to meet difference Demand, the first dust arrester 28, the second dust arrester 29 preferably employ as metal film dust-remover or scrubber.High temperature oil Gas 32 converges after dedusting respectively, is jointly sent to oil gas purifier, produces the products such as tar, coal gas.First dust arrester 28 is received The dust of collection is sent in the 5th buffering chamber 18 of hot solid carrier devolatilization machine bottom, is together sent to CFBB with semicoke 7.The dust that second dust arrester 29 is collected is sent in the 4th buffering chamber 17 of gas heat carrier retorting machine bottom.Recirculating fluidized bed The unnecessary lime-ash 34 after lag cooler 33 is processed in 7 bottoms is periodically discharged, and after cooling down, can be used as the former of construction material Material.

Further, the raw material 1,24,25 adding in this utility model refers to carbonaceous material, such as coal, oil shale.

（1）CFBB has been coupled solid thermal carriers rotary dry distillation system by present patent application simultaneously and gas is many Pipe rotary dry distillation system, wherein gas multitube rotary distillation system are applicant's independent development the retorting technique declaring patent, Patent No. 201110269683.7, has that fine coal treating capacity is big, carbonizing gas treating capacity is little, and tar dust content is low, coal gas The advantages of calorific value is high.The heat ash that boiler produces is as the pyrolysis heat carrier of solid thermal carriers rotary dry distillation machine.The cigarette that boiler produces Gas can be not only used for producing steam, can be utilized gas multitube rotary destructive distillation device to produce coal gas, the produce load of the two is adjustable again.Solution Determine and be not suitable in some engineer applied producing steam and steam-electric power, or the situation limited to the production capacity of the two, make Obtain the better adaptability to different Production requirements of this patent, be easy to promote.

（2）Present patent application is directed to heat ash assignment problem produced by boiler and proposes new apparatus structure, that is, in whirlwind Cleaner unit bottom setting heat ash distributor.

The high-temperature hot ash collected by cyclone dust extractor is received by the receiving port 101 of reception cavity 110, and the heat ash of whereabouts is first First not section accumulation in conveyor chamber 111.When heat ash accumulation reaches the position of circulation import 104, hot ash will automatically slip to and follow Ring cavity 112, the loop exit 102 of torus 112 is connected with material-returning device 26, and material-returning device 26 exports and CFBB 7 connections, unnecessary hot ash is sent back to CFBB 7.The heat ash of accumulation in conveyor chamber 111（500~1000℃）By defeated The control sending the first carrier 19 of mouth 103 connection is delivered in hot solid carrier devolatilization machine 27.Compared to heat of the prior art The grey method of salary distribution, present patent application has following technological merit：（1）Apparatus structure simple it is only necessary to a feed bin and one defeated Send device can complete distribution between boiler and distillation system for the heat ash.（2）Adjust simple, be adjusted merely by the discharging speed of carrier Degree, you can adjust heat ash sendout between steam generator system and distillation system.（3）Regulative mode is reliable, in the hot ash of this patent In formula formula, the hot ash quantity of retorting machine is guaranteed all the time, and not depositing heat ash distribution in the prior art needs each system mutually to assist Adjust, interactional situation between system.Do not deposit in the prior art, heat ash distribution storage bin-level is easily subject to system operation shape yet Condition affects, and material position easily fluctuates, the shortcoming of fluctuation of service or the frequent regulation of needs.（4）System independence is strong, when boiler combustion goes out Now fluctuate, change in the lower amount of heat ash and ash temperature, due to the caching effect to heat ash for the caching feed bin, can effectively offset heat ash The fluctuation of parameter, substantially reduces retorting machine and enters the regulating frequency of grey valve it is ensured that the stable and product quality of retort process It is stable,

（3）The application is directed to the perturbed problem between boiler combustion system and distillation system, dry in solid thermal carriers revolution Evaporate the heat ash feed end of machine, pyrolysis char discharge end, and gas multitube rotary retorting machine discharge end and be respectively provided with buffering chamber, and The heat smoke that boiler produces can be with real-time regulation in the sendout of waste heat boiler and gas multitube rotary distillation system.When boiler system When fluctuation in the combustion position of system, by the caching to heat ash for the buffer storage before solid thermal carriers rotary dry distillation machine, and adjust The heat smoke air inflow of throttle body multitube distillation system is so that the combustion fluctuation of boiler will not be larger to two sets of distillation systems generations Impact is it is ensured that the stablizing of retorted product quality.On the other hand, when fluctuation in two sets of distillation systems, the semicoke that dry distilling produces When change in amount, the fluctuation making dry distilling is unlikely to the burning to boiler and produces by the semicoke buffer storage after two sets of distillation systems Raw impact.This patent system stability in actual production is higher.

（4）For the isolating problem of gas phase between boiler and distillation system, this patent is in solid thermal carriers rotary dry distillation machine Enter grey end and semicoke discharge end, and gas multitube rotary retorting machine discharge end setting buffering chamber, using the material of buffering chamber itself Envelope acts on, and by the high temperature gas phase of boiler, and the gas phase of dry distilling is kept apart, and makes to be unlikely between steam generator system and distillation system to produce Collaborate., the safety of one side system greatly improves, and on the other hand ensure that the quality of coal gas.

（5）Enter for heat ash and destructive distillation coal and before hot solid carrier devolatilization system, be easily pyrolyzed asking of upstream collaborating in advance Topic, this patent utilizes rotary kiln pyrogenation stove itself to be beneficial to the characteristic of storeroom mutually blending, directly adopts oblique cutting elephant trunk respectively will Two materials slip and blend into rotary kiln, and are pyrolyzed in larger space, effectively avoid because being pyrolyzed the coal gas leading in advance The problem collaborated upwards.

（6）For driving or other need the condition of production that CFBB individually adjusts, this patent is recycle stream Fluidized bed boiler system is provided with individually to be entered device for coal and enters heat carrier device, whole compared to being adjusted using the feed system of dry distilling Set process operation state, adjusts complexity and substantially reduces, and needs individually to adjust the production of boiler combustion situation some Under situation, considerable influence will not be produced to two sets of distillation systems.

Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect Step describes in detail, be should be understood that and the foregoing is only specific embodiment of the utility model, is not limited to this Utility model, all of the present utility model spirit and principle within, any modification, equivalent substitution and improvement done etc., all should wrap It is contained within protection domain of the present utility model.

Claims (43)

1. a kind of recirculating fluidized bed heat ash distributor, including the first carrier（19）Cavity with a receiving flying dust（120）, its It is characterised by：Described cavity（120）Including reception cavity（110）, torus（112）, conveyor chamber（111）, described reception cavity（110） And conveyor chamber（111）Connection and centrage coincidence, described torus（112）By circulating import（104）Connection reception cavity（110） And/or conveyor chamber（111）, described reception cavity（110）Including the receiving port for receiving flying dust（101）, described torus（112） Including the loop exit for conveying flying dust to fluid bed（102）, described conveyor chamber（111）Including for the first carrier （19）The delivery port of conveying flying dust（103）, described circulation import（104）With loop exit（102）Centrage and receiving port （101）And delivery port（103）Centrage angle β be acute angle.

2. a kind of recirculating fluidized bed heat ash distributor according to claim 1 it is characterised in that：Described reception cavity （110）The cross-sectional area of any place is identical, described conveyor chamber（111）The cross-sectional area of any place is identical, described torus （112）The cross-sectional area of any place is identical.

3. a kind of recirculating fluidized bed heat ash distributor according to claim 1 it is characterised in that：Described conveyor chamber （111）, it has a cross-sectional area and is more than conveyor chamber（111）First buffering chamber of body cross-section area（14）, described One buffering chamber（14）Can be along conveyor chamber（111）The extending partially or entirely of body.

4. a kind of recirculating fluidized bed heat ash distributor according to claim 1 or 3 it is characterised in that：Described torus （112）, it is near circulation import（104）The cross-sectional area at place is increasingly greater than away from circulation import（104）The cross-sectional area at place.

5. a kind of recirculating fluidized bed heat ash distributor according to claim 1-3 any claim it is characterised in that： Described reception cavity（110）, conveyor chamber（111）, torus（112）Cross section be circle, ellipse, tetragon, polygonal Any one or a few.

6. a kind of recirculating fluidized bed heat ash distributor according to claim 4 it is characterised in that：Described reception cavity （110）, conveyor chamber（111）, torus（112）Cross section be circle, ellipse, tetragon, polygonal any one or Several.

7. a kind of CFBC is combined with rotary kiln pyrogenation distillation system it is characterised in that：Including along before heat ash Enter the recirculating fluidized bed that direction sets gradually（7）, cyclone dust extractor（13）, hot solid carrier devolatilization machine（27）, described recycle stream Change bed（7）Exhanst gas outlet connects cyclone dust extractor（13）Import, described cyclone dust extractor（13）Dust export connects heat ash distribution The receiving port of device（101）, the loop exit of described heat ash distributor（102）By material-returning device（26）Connect ciculation fluidized Bed（7）Emulsion zone；First carrier of described heat ash distributor（19）With hot solid carrier devolatilization machine（27）Feed end even Connect；First batcher（23）The carbonaceous material treating dry distilling is sent into hot solid carrier devolatilization machine（27）Interior and hot ash mixed pyrolysis； Described hot solid carrier devolatilization machine（27）Solids exit end and recirculating fluidized bed（7）Emulsion zone connects；Described hot ash is equipped with Be set to the heat ash distributor of recirculating fluidized bed described in claim 1 to 5 any one.

8. the distillation system that a kind of CFBC according to claim 7 is combined with rotary kiln pyrogenation, it is special Levy and be：Described hot solid carrier devolatilization machine（27）Solids exit end pass through the 5th buffering chamber that is sequentially connected（18）With the 5th Carrier（20）With recirculating fluidized bed（7）Emulsion zone connects.

9. the distillation system that CFBC according to claim 8 is combined with rotary kiln pyrogenation, its feature exists In：Described hot solid carrier devolatilization machine（27）Pyrolysis oil gas vent connect the first dust arrester（28）.

10. the distillation system that a kind of CFBC according to claim 9 is combined with rotary kiln pyrogenation, it is special Levy and be：Described first dust arrester（28）For metal film dust-remover or scrubber.

It is dry that 11. CFBCs according to claim 7-10 any claim are combined with rotary kiln pyrogenation Evaporate system it is characterised in that：Described first batcher（23）Upstream be provided with storage carbonaceous material the second buffering chamber（15）.

It is dry that 12. CFBCs according to claim 7-10 any claim are combined with rotary kiln pyrogenation Evaporate system it is characterised in that：Described cyclone dust extractor（13）Exhanst gas outlet connects gas heat carrier retorting machine（31）, the second feed Machine（30）The carbonaceous material treating dry distilling is sent into gas heat carrier retorting machine（31）Interior pyrolysis；Described gas heat carrier retorting machine （31）Solids exit end one tunnel and recirculating fluidized bed（7）Emulsion zone connects, the pyrolysis product such as another rood to such as coke.

The distillation system that 13. CFBCs according to claim 11 are combined with rotary kiln pyrogenation, its feature It is：Described cyclone dust extractor（13）Exhanst gas outlet connects gas heat carrier retorting machine（31）, the second batcher（30）To wait to do The carbonaceous material evaporating sends into gas heat carrier retorting machine（31）Interior pyrolysis；Described gas heat carrier retorting machine（31）Solids exit Hold a road and recirculating fluidized bed（7）Emulsion zone connects, the pyrolysis product such as another rood to such as coke.

The distillation system that 14. CFBCs according to claim 12 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）Solids exit end pass through the 4th buffering chamber that is sequentially connected（17）And carrier （37）With recirculating fluidized bed（7）Emulsion zone connects.

The distillation system that 15. CFBCs according to claim 12 are combined with rotary kiln pyrogenation, its feature It is：Described second batcher（30）Upstream be provided with storage carbonaceous material the 3rd buffering chamber（16）.

The distillation system that 16. CFBCs according to claim 15 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）Gas exit end connect the second dust arrester（29）.

The distillation system that 17. CFBCs according to claim 16 are combined with rotary kiln pyrogenation, its feature It is：Described second dust arrester（29）For metal film dust-remover or scrubber.

The distillation system that 18. CFBCs according to claim 17 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）Smoke outlet be sequentially connected the first waste heat boiler（10）Draw with the first flue gas Blower fan（12）.

It is dry that 19. CFBCs according to claim 7-10 any claim are combined with rotary kiln pyrogenation Evaporate system it is characterised in that：Described cyclone dust extractor（13）Exhanst gas outlet is also sequentially connected the second waste heat boiler（9）With the second cigarette Gas air-introduced machine（11）.

It is dry that 20. CFBCs according to claim 7-10 any claim are combined with rotary kiln pyrogenation Evaporate system it is characterised in that：Described recirculating fluidized bed（7）It is provided with independent carbonaceous material charging gear（6）Give with solid heat carrier Material device（5）；Described recirculating fluidized bed（7）Bottom connects lag cooler（33）.

It is dry that 21. CFBCs according to claim 7-10 any claim are combined with rotary kiln pyrogenation Evaporate system it is characterised in that：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 22. CFBCs according to claim 12 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.

The distillation system that 23. CFBCs according to claim 13 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）Solids exit end pass through the 4th buffering chamber that is sequentially connected（17）And carrier （37）With recirculating fluidized bed（7）Emulsion zone connects.

The distillation system that 24. CFBCs according to claim 13 are combined with rotary kiln pyrogenation, its feature It is：Described second batcher（30）Upstream be provided with storage carbonaceous material the 3rd buffering chamber（16）.

The distillation system that 25. CFBCs according to claim 14 are combined with rotary kiln pyrogenation, its feature It is：Described second batcher（30）Upstream be provided with storage carbonaceous material the 3rd buffering chamber（16）.

The distillation system that 26. CFBCs according to claim 23 are combined with rotary kiln pyrogenation, its feature It is：Described second batcher（30）Upstream be provided with storage carbonaceous material the 3rd buffering chamber（16）.

27. CFBCs according to claim 23-26 any claim are combined with rotary kiln pyrogenation Distillation system it is characterised in that：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.

The distillation system that 28. CFBCs according to claim 11 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 29. CFBCs according to claim 12 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 30. CFBCs according to claim 13 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 31. CFBCs according to claim 14 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 32. CFBCs according to claim 15 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 33. CFBCs according to claim 16 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 34. CFBCs according to claim 17 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 35. CFBCs according to claim 18 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 36. CFBCs according to claim 19 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 37. CFBCs according to claim 20 are combined with rotary kiln pyrogenation, its feature It is：Described hot solid carrier devolatilization machine（27）For solid thermal carriers rotary dry distillation machine.

The distillation system that 38. CFBCs according to claim 13 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.

The distillation system that 39. CFBCs according to claim 14 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.

The distillation system that 40. CFBCs according to claim 15 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.

The distillation system that 41. CFBCs according to claim 16 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.

The distillation system that 42. CFBCs according to claim 17 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.

The distillation system that 43. CFBCs according to claim 18 are combined with rotary kiln pyrogenation, its feature It is：Described gas heat carrier retorting machine（31）For gas multitube rotary retorting machine.