CN205061979U - Gas -solid heat of mixing carrier is whitewashed coal pyrolysis device fast - Google Patents
Gas -solid heat of mixing carrier is whitewashed coal pyrolysis device fast Download PDFInfo
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- CN205061979U CN205061979U CN201520796980.0U CN201520796980U CN205061979U CN 205061979 U CN205061979 U CN 205061979U CN 201520796980 U CN201520796980 U CN 201520796980U CN 205061979 U CN205061979 U CN 205061979U
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Abstract
The utility model discloses a gas -solid heat of mixing carrier is whitewashed coal pyrolysis device fast, pyrolytic reaction ware including the reducing, pyrolysis oil gas collector is installed in the top export of pyrolytic reaction ware, the middle part is built -in to have a whirl blender, the lower part is equipped with ventilative heat accumulation layer, the bottom is equipped with two hot semicoke exports, hot semicoke is discharged in an export, another export is connected with pipe type returning charge ware, pipe type returning charge ware links to each other with simple separator through the burning riser, the bottom of simple separator is equipped with L type high temperature semicoke control valve, dry raw materials coal bunker bottom is equipped with the dry raw materials coal control valve of L type, the export of two control valves is continuous with two entrys of whirl blender respectively, pyrolysis oil gas collector links to each other with box multitube cyclone dust collector's oil gas inlet manifold case, box multitube cyclone dust collector's export links to each other with high temperature centrifugal fan, the export of high temperature centrifugal fan links to each other with dry feed coal control valve of L type and L type high temperature semicoke control valve respectively, and the shortage of the prior art is overcome.
Description
Technical field
The utility model belongs to fine coal (resinous shale) pyrolysis art, is specifically related to the quick pulverized coal pyrolysis device of a kind of gas-solid mixing thermal barrier.
Background technology
China's coal heavy wool is few, although coal resources relative abundance, the low-rank coal such as brown coal, long-flame coal occupies about 53% of coal in China total amount, and such coal is mostly direct as fuel used to generate electricity at present; So develop a kind of pulverized coal pyrolysis technique, extract the coal tar of hydrogen-rich component and carried out deep processing to it before coal combustion, improving the added value of fine coal, reduce combustion processes medium sulphide content and discharged nitrous oxides, environment protection tool is of great significance.
China carries out pyrolysis with lump coal for a long time and produces the technique of semicoke for representative in upright carbide furnace, and the coal gas utilizing self to produce directly or indirectly heats, Heating temperature all at about 800 DEG C, output solid semicoke, coal gas and middle coalite tar.But it is low to there is caloric power of gas in this technique, and tar yield is low, the shortcoming that environmental pollution is large.And China combines and adopts coal-mining technique and obtain and develop rapidly in recent years, and the productive rate of progress of coal mining medium-sized coal has been down to less than 36%, the price Continued of market lump coal, creates serious disadvantageous effect to the pyrolytic process technology that lump coal is raw material.The numerous enterprises domestic in fine coal hot coal field, colleges and universities and scientific research institutions have done pulverized coal pyrolysis and have studied widely, and obtain a large amount of basic datas.But China starts late in pulverized coal pyrolysis field, there is no maturation, reliable, stable Technology, be in product structure for a long time simple, the backward stage that treatment scale is little.The following deficiency of the pulverized coal pyrolysis industrial demonstration unit appearance all in various degree of simultaneously having built up: (1) pyrolysis oil gas dust-laden is comparatively large, the coal tar of generation is difficult to recycle; (2) technique is unstable, and the cycle of operation is short, operation easier is large; (3) complex process, flow process are longer, investment is higher, be unfavorable for applying.
Utility model content
In order to solve prior art Problems existing and deficiency, the utility model provides the quick pulverized coal pyrolysis device of a kind of gas-solid mixing thermal barrier.
The utility model is achieved through the following technical solutions:
The quick pulverized coal pyrolysis device of a kind of gas-solid mixing thermal barrier, comprise the pyrolysis reactor of dried feed coal bunker and reducing, the top exit of described pyrolysis reactor is provided with pyrolysis oil gas collector, cyclone mixer is kept in middle part, bottom is provided with ventilative recuperation layer, bottom is provided with two hot semicoke outlets, hot semicoke is discharged by an outlet, another outlet connects the entrance of tobacco pipe type material returning device by pipeline, the outlet of tobacco pipe type material returning device connects vertically disposed combustion rise pipe, the import of simple separation device is connected to after the upper horizontal direction of combustion rise pipe bends 90 degree, the outlet at bottom of simple separation device is provided with L-type high-temperature semi-coke control valve, L-type dried feed coal control valve is provided with bottom dried feed coal bunker, the outlet of L-type high-temperature semi-coke control valve and the outlet of L-type dried feed coal control valve enter from the cylinder lateral wall of pyrolysis reactor respectively and are connected with two of cyclone mixer entrances, the outlet of simple separation device is connected with the entrance of cyclonic separator, the outlet of cyclonic separator is connected with the entrance of the thermal insulation layer of box-type multi-tube tornado dust collector, the pyrolysis oil gas collector that pyrolysis reactor top is arranged is connected with the oil gas inlet manifold case of box-type multi-tube tornado dust collector, the outlet of box-type multi-tube tornado dust collector is connected with high-temperature centrifugal fan, high-temperature centrifugal fan outlet is connected with L-type high-temperature semi-coke control valve with L-type dried feed coal control valve respectively.
This device also comprises multiple tube screwed feeding machine and heat pipe semicoke water cooler, and one bottom pyrolysis reactor hot semicoke outlet is connected with multiple tube screwed feeding machine, and multiple tube screwed feeding machine is connected with heat pipe semicoke water cooler.
The pyrolysis reactor epimere of described reducing is expanding reach, and hypomere is conversion zone, and expanding reach diameter is 1.1 ~ 1.8 times of conversion zone diameter, and the pyrolysis reactor expanding reach height of reducing is 0.75 ~ 1.12 times of conversion zone height; The base plate that described pyrolysis oil gas collector comprises cylindrical shape and the blinds be arranged on base plate, the tangent line angle of the base plate cylindrical of louvres and pyrolysis oil gas collector is 30 ~ 65 degree.
The pyrolysis reactor expanding reach diameter of described reducing is 1.2 ~ 1.6 times of conversion zone diameter, and expanding reach height is 0.8 ~ 1.0 times of conversion zone height; The tangent line angle of the base plate cylindrical of louvres and pyrolysis oil gas collector is 35 ~ 45 degree.
Described cyclone mixer comprises cylindrical shell and the cone of cylinder shape, cone is connected with below the cylindrical shell of cylinder shape, the tangential place on cylindrical shell top respectively opposed be provided with two be tilted under feed-pipe, cylindrical shell top is provided with vapor pipe, exhaust outlet correspondence is provided with distribution cap, and cone bottom is provided with tremie pipe, and the cylindrical shell arranged outside of tremie pipe has the drainage conduit of two groups of totally 8 identical inclination angle different lengthss, the end of drainage conduit is provided with flutter valve, and cone height is 1.2 ~ 2.7 times of cylindrical shell height.
Described tobacco pipe type material returning device comprises the outer cylinder body of cylinder shape, outer cylinder body inside is provided with columniform guide shell, the height of guide shell is lower than outer cylinder body height, returning charge blast main is connect bottom guide shell, be provided with pore bottom returning charge blast main, be provided with between guide shell and outer cylinder body for carrying out the base plate sealed, outer cylinder body sidepiece surface thereof is provided with solid material feeder pipe, the upper end of outer cylinder body is provided with a conical head, and conical head top connects combustion rise pipe.
Described simple separation device comprises cylindrical tube, head slab shape end socket and bottom pyramidal end socket, described cylindrical tube, head slab shape end socket and bottom pyramidal end socket are sealed to form, the tangential level connection joint of cylindrical tube has the feed-pipe of cyclone mixer, the centre of head slab shape end socket is provided with gaseous phase outlet, this gaseous phase outlet is connected with cyclonic separator, and bottom pyramidal end socket connects L-type high-temperature semi-coke control valve.
Described box-type multi-tube tornado dust collector are square-box-shaped structure, comprise casing, box house staggered floor Heterogeneous Permutation has multiple cyclonic separator, the outlet of each cyclonic separator is all provided with trip valve, box house is tiltedly installed with dividing plate, and casing is divided into two portions by this dividing plate, and a part is the pyrolysis oil gas inlet manifold case of box-type multi-tube tornado dust collector, a part is the thermal insulation layer of box-type multi-tube tornado dust collector, and preferred cyclonic separator number is 20 ~ 1000.
Described ventilative recuperation layer comprises the heavy wall concentric reducer that multilayer is arranged, the preferred specification of concentric reducer has 100 × 80,125 × 80,150 × 100,200 × 150,250 × 200,300 × 200,300 × 250,350 × 200,350 × 250 ventilative recuperation layers are that multilayer is arranged, preferably 6 ~ 25 layers.
Described combustion rise pipe is made up of outer field stainless steel basic unit and inner ceramic wearing coat.
Described heat pipe semicoke water cooler comprises casing, the top of described casing is provided with long strip type opening for feed, bottom is discharge gate, this opening for feed connects with the multiple tube screwed feeding machine with multiple outlet, multiple heat pipes that box house establishes S type to arrange, the bottom of heat pipe is filling pipe end, top is water return outlet, heat pipe is through the corresponding casing arranged, heat pipe part is made to be placed in casing outside, outside heat pipe surface arranges radiating fin, is placed in 0.6 ~ 1.5 times that outside heat pipe total length is inner heat pipe, preferably 0.8 ~ 1.2 times.
Compared with prior art, the utility model has following useful technique effect:
(1) have employed gas-solid mixing thermal barrier, gas phase thermal barrier is the pyrolysis high-temperature oil gas produced by pyrolysis self, after high-temperature centrifugal fan pressurization, is entered by L-type valve inlet pipe, while control inlet amount, has the function of gas heating concurrently; A part, based on the hot semicoke produced after completing pyrolytic reaction, controls flow through tobacco pipe type material returning device, and the gravity carrying out heating by ignition and semicoke particle in combustion rise pipe promotes, and the high-temperature semi-coke of generation is as solid thermal carriers.Gaseous heat-carrier (pyrolysis oil gas), solid thermal carriers (high-temperature semi-coke), in cyclone mixer, contact with feed coal respectively and mix, and pyrolytic reaction occurs.
(2) pyrolysis reactor top arranges pyrolysis oil gas collector, under the effect of contraction of pyrolysis oil gas collector blinds, the air-flow risen in pyrolysis reactor (is observed) counterclockwise from top to bottom, and spin helically propradation, can prevent upstream turbulent entrainment dust granules.
(3) because the temperature of dried feed coal is about 130 ~ 150 DEG C, after contacting with gas-solid mixing thermal barrier, can heated fast generation pyrolysis, effectively can promote the fracture of organic compound key in coal molecule, improve the productive rate of oil gas.
(4) adopt the cyclone mixer of mechanical rotating part, solid thermal carriers can be made fully to mix with feed coal.
(5) reactor bottom is provided with ventilative recuperation layer, combine owing to have employed steel thick wall concentric reducer, effectively can solve reactor bottom material level when changing, inside reactor thermal capacity fluctuates, Absorbable organic halogens pyrolysis reaction temperature and pyrolysis oil temperature degree, ensure technique smooth running; Simultaneously ventilative recuperation layer make to move down in the semicoke particle gas that produces or carry secretly fully discharge.
(6) have employed the collocation method that simple separation device is connected successively with efficient cyclonic separator, utilize simple separation device inferior separating effect, dust granules in high-temperature semi-coke after heating is brought in cyclonic separator by air-flow and traps, dust granules in minimizing solid thermal carriers and the quantity of fine particle, and then the effective dust content reduced in pyrolysis oil gas.
(7) box-type multi-tube tornado dust collector, have employed multiple whirly separator parallel combination and form, whirly is many misarrangements layer, and dislocation is arranged, is conducive to the even air inlet of pyrolysis oil gas, improves efficiency of dust collection.Simultaneously at each Cyclone outlet, often arrange cyclonic separator general export and trip valve is set, the quantity of the cyclonic separator put into operation can be controlled in real time, make the operating load of the cyclonic separator run reach 100%, be in optimal operational condition all the time.
(8) have employed multiple spiral tube feeding machine be arranged in parallel, screw feeder arranges multiple import and outlet simultaneously, add the horizontal feed scope of feeding machine, achieve the double-acting of feed sub-material, secondly progressive pitch is adopted to arrange, prevent get stuck, putty, improve the reliability of equipment.
(9) adopted heat pipe semicoke water cooler, hot semicoke is mobile by horizontally disposed heat pipe gap from top to bottom, and heat pipe, through box body wall, extends to outside, and arranges fin to the heat pipe surface of outside, increases radiating effect.The water of flowing is used to remove medium as heat in heat pipe inside.Effectively raise speed of cooling and the efficiency of semicoke, and can not airborne dust be produced.
(10) pyrolysis reactor adopted due to this device reaction material belongs to quick travel bed-type formula, because pyrolysis reactor conversion zone diameter is little, volume is little, and treatment capacity is large, thus effectively reduce the volume in pyrolysis reactor, simple separation device, dried feed storehouse, improve the utilization ratio of equipment.This pyrolysis installation structure is simple, and number of devices is few, and equipment apportion is arranged, does not have overlap, can effectively reduce the height of device, be conducive to industrialization, fully demonstrated the technological merit of gas-solid mixing thermal barrier fine coal fast pyrolysis process.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.Sequence number a in figure is pyrolysis reactor, b is pyrolysis oil gas collector, c is cyclone mixer, d is ventilative recuperation layer, e is multiple tube screwed feeding machine, f is heat pipe semicoke water cooler, g is tobacco pipe type material returning device, h is combustion rise pipe, i is simple separation device, j is cyclonic separator, k is box-type multi-tube tornado dust collector, l is high-temperature centrifugal fan, m is dried feed coal bunker, n is L-type dried feed coal control valve, o is L-type high-temperature semi-coke control valve, v is trip valve, 1 is air lift air, 2 is returning charge air, 3 is high-temperature semi-coke powder, 4 is heat smoke, 5 is dry fine coal, 6 is semicoke dust, 7 is pyrolysis oil gas, 8 is powdery semicoke, 9 is the upper water of cooling, 10 is cooling backwater.
Fig. 2 is pyrolysis reactor scantlings of the structure schematic diagram.Sequence number a1 in figure is expanding reach, and a2 is conversion zone, and A-d1 is expanding reach diameter, and A-h1 is expanding reach height, and A-d2 is conversion zone diameter, and A-h2 is conversion zone height.
Fig. 3 is the structural representation of pyrolysis oil gas collector.Sequence number b1 in figure is base plate, and b2 is blinds.
Fig. 4 is cyclone mixer structural representation.Sequence number c1 in figure is feed-pipe, and c2 is feed-pipe, and c3 is vapor pipe, and c4 is distribution cap, and c5 is cylindrical shell, and c6 is cone, and c7 is tremie pipe, and c8 is drainage conduit, and c9 is flutter valve.
Fig. 5 is cyclone mixer top view.
Fig. 6 is tobacco pipe type material returning device structural representation.Sequence number g1 in figure is guide shell, and g2 is outer cylinder body, and g3 is conical head, and g4 is feed-pipe, and g5 is pore, and g6 is base plate, and g7 is returning charge blast main.
Fig. 7 is box-type multi-tube tornado dust collector inner cyclone layout drawing.Sequence number k1 in figure is casing, and k2 is cyclonic separator, and k3 is inlet tube, and k4 is inlet manifold case.
Fig. 8 is heat pipe semicoke cooler construction schematic diagram.Sequence number f1 in figure is opening for feed, and f2 is casing, and f3 is water return outlet, and f4 is filling pipe end, and f5 is discharge gate, and f6 is fin, and f7 is heat pipe.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail, described in be to explanation of the present utility model instead of restriction.
See Fig. 1 to Fig. 8, the quick pulverized coal pyrolysis device of a kind of gas-solid mixing thermal barrier, comprise the pyrolysis reactor a of dried feed coal bunker m and reducing, the top exit of described pyrolysis reactor a is provided with pyrolysis oil gas collector b, cyclone mixer c is kept in the middle part of pyrolysis reactor a, the bottom of pyrolysis reactor a is provided with ventilative recuperation layer d, the bottom of pyrolysis reactor a is provided with two hot semicoke outlets, an outlet connects multiple tube screwed feeding machine, hot semicoke is delivered to heat pipe semicoke water cooler to carry out after cooling and to discharge, another outlet connects the entrance of tobacco pipe type material returning device g by pipeline, the outlet of tobacco pipe type material returning device g connects vertically disposed combustion rise pipe h, the import of simple separation device i is connected to after the upper horizontal direction of combustion rise pipe h bends 90 degree, the outlet at bottom of simple separation device i is provided with L-type high-temperature semi-coke control valve o, L-type dried feed coal control valve n is provided with bottom dried feed coal bunker m, the outlet of L-type high-temperature semi-coke control valve and the outlet of L-type dried feed coal control valve enter from the cylinder lateral wall of pyrolysis reactor a respectively and are connected with two of cyclone mixer c entrances, the outlet i of simple separation device is connected with the entrance of cyclonic separator j, the outlet of cyclonic separator j is connected with the entrance of the thermal insulation layer of box-type multi-tube tornado dust collector k, the pyrolysis oil gas collector b that pyrolysis reactor a top is arranged is connected with the oil gas inlet manifold case of box-type multi-tube tornado dust collector k, the outlet of box-type multi-tube tornado dust collector k is connected with high-temperature centrifugal fan 1, high-temperature centrifugal fan 1 exports and is connected with L-type high-temperature semi-coke control valve with L-type dried feed coal control valve respectively.
This device also comprises multiple tube screwed feeding machine e and heat pipe semicoke water cooler f, and one bottom pyrolysis reactor a hot semicoke outlet is connected with multiple tube screwed feeding machine e, and multiple tube screwed feeding machine e is connected with heat pipe semicoke water cooler f.
The pyrolysis reactor epimere of described reducing is expanding reach a1, and hypomere is conversion zone a2, and expanding reach diameter A-d1 is 1.1 ~ 1.8 times of conversion zone diameter A-d2, and the pyrolysis reactor expanding reach height A-h1 of reducing is 0.75 ~ 1.12 times of conversion zone height A-h2; The base plate b1 that described pyrolysis oil gas collector comprises cylindrical shape and the blinds b2 be arranged on base plate b1, the tangent line angle of the base plate cylindrical of louvres and pyrolysis oil gas collector is 30 ~ 65 degree.
The pyrolysis reactor expanding reach diameter of described reducing is 1.2 ~ 1.6 times of conversion zone diameter, and expanding reach height is 0.8 ~ 1.0 times of conversion zone height; The tangent line angle of the base plate cylindrical of louvres and pyrolysis oil gas collector is 35 ~ 45 degree.
Described cyclone mixer c comprises cylindrical shell c5 and the cone c6 of cylinder shape, cone c6 is connected with below the cylindrical shell c5 of cylinder shape, the tangential place on cylindrical shell c5 top be respectively equipped with two be tilted under feed-pipe c1, c2, cylindrical shell top is provided with vapor pipe c3, exhaust outlet correspondence is provided with distribution cap c4, cone c6 bottom is provided with tremie pipe c7, the cylindrical shell arranged outside of tremie pipe c7 has the drainage conduit c8 of two groups of identical inclination angle different lengthss, two groups of drainage conduit c8 are total up to 8, 4 long drainage conduit c8, 4 short drainage conduit c8, 4 long and arrange in rice font between 4 short two groups, the end of drainage conduit c8 is provided with flutter valve c9, cone c6 height is 1.2 ~ 2.7 times of cylindrical shell c5 height.
Described ventilative recuperation layer comprises the heavy wall concentric reducer that multilayer is arranged, preferred specification has 100 × 80,125 × 80,150 × 100,200 × 150,250 × 200,300 × 200,300 × 250,350 × 200,350 × 250, preferably 6 ~ 25 layers.
Described tobacco pipe type material returning device comprises the outer cylinder body g2 of cylinder shape, outer cylinder body g2 inside is provided with columniform guide shell g1, the height of guide shell g1 is lower than outer cylinder body g2 height, base plate g6 is adopted to seal between guide shell g1 and outer cylinder body g2, returning charge blast main g7 is met bottom guide shell g1, pore g5 is provided with bottom returning charge blast main, make on the base plate g6 being distributed between outer cylinder body g2 and guide shell g1 of returning charge even air, outer cylinder body g2 sidepiece surface thereof is provided with solid material feeder pipe g4, the upper end of outer cylinder body g2 is provided with a conical head g3, conical head g3 top connects combustion rise pipe.
Described combustion rise pipe h is made up of outer field stainless steel basic unit and inner ceramic wearing coat.
Described simple separation device comprises cylindrical tube, head slab shape end socket and bottom pyramidal end socket, described cylindrical tube, head slab shape end socket and bottom pyramidal end socket are sealed to form, the tangential level connection joint of cylindrical tube has the feed-pipe of cyclone mixer, the centre of head slab shape end socket is provided with gaseous phase outlet, this gaseous phase outlet is connected with cyclonic separator, and bottom pyramidal end socket connects L-type high-temperature semi-coke control valve.
Described box-type multi-tube tornado dust collector are square-box-shaped structure, comprise casing k1, and the inner staggered floor Heterogeneous Permutation of casing k1 has multiple cyclonic separator k2, and the outlet of each cyclonic separator is all provided with trip valve v, for the corresponding cyclonic separator that quits work; Box house is tiltedly installed with dividing plate, casing is divided into two portions by this dividing plate, a part is the pyrolysis oil gas inlet manifold case k4 of box-type multi-tube tornado dust collector, and a part is the thermal insulation layer of box-type multi-tube tornado dust collector, and preferred cyclonic separator number is 20 ~ 1000.
Described cyclonic separator is preferred structure formation and scantlings of the structure, has higher separation efficiency.
Described heat pipe semicoke water cooler comprises rectangular box f2, the top of described casing f2 is provided with long strip type opening for feed f1, bottom is discharge gate f5, this opening for feed f1 connects with the multiple tube screwed feeding machine e with multiple outlet, casing f2 inside is provided with multiple heat pipe f7 that S type is arranged, the bottom of heat pipe f7 is that filling pipe end f4 connects the upper water of cooling, top is that water return outlet f3 discharges cooling backwater, heat pipe f7 is through the corresponding casing f2 arranged, heat pipe part is made to be placed in casing outside, outside heat pipe surface arranges radiating fin f6, be placed in 0.6 ~ 1.5 times that outside heat pipe total length is inner heat pipe, preferably 0.8 ~ 1.2 times.
Technological process of the present utility model:
(1) adopt the processing method known to carry out sub-sieve to raw coal, select the fine coal of its certain granules, after being heated drying, as the dry fine coal raw material of pyrolysis installation, and send in dried feed coal bunker.Dry fine coal in dried feed coal bunker enters in L-type dried feed coal control valve from bottom discharge mouth, converges with the pyrolysis oil gas from high-temperature centrifugal fan, enters in the cyclone mixer in the middle part of interior plant pyrolysis reactor.
(2) high-temperature semi-coke come from simple separation device enters through L-type high-temperature semi-coke control valve from bottom discharge mouth, converge with the pyrolysis oil gas from high-temperature centrifugal fan, under the impellent effect of pyrolysis oil gas, enter in the cyclone mixer in the middle part of interior plant pyrolysis reactor.
(3) from dry fine coal, pyrolysis oil gas and high-temperature semi-coke that cyclone mixer cylindrical shell tangentially enters, in Dual-Phrase Distribution of Gas olid.Dual-Phrase Distribution of Gas olid produces strong rotation under the guide functions of cyclone mixer cylinder inboard wall, and under screw in moving process, dry fine coal mixes rapidly with high-temperature semi-coke, and heat transfer and pyrolysis occur.Mixed solid particulate is thrown toward barrel under centrifugal action, and under gravity, falls to tremie pipe along barrel, and the drainage conduit distributed by tremie pipe surrounding drains into the conversion zone of pyrolysis reactor, and drainage conduit end is provided with the flutter valve of automatic open close.The air-flow rotated shrinks to center flow under the effect of contraction of conical shell, and upwards formation secondary vortex flow is discharged through vapor pipe, and exhaust outlet is provided with distribution cap, makes discharge air dispersion to pyrolysis reactor surrounding.
(4) the dry fine coal of the mixing from cyclone mixer drainage conduit and high-temperature semi-coke proceed heat transfer and pyrolysis, until heat transfer or pyrolysis terminate.In the dry fine coal of mixing and the process that moves down of high-temperature semi-coke pyrolysis reactor breathe freely recuperation layer effect under, dry fine coal and the high-temperature semi-coke of mixing constantly change radial flow direction, the gas carried secretly in particle or pyrolysis produces is discharged from space, and in the process of flowing, high temperature has concentric reducer and composite grain also constantly heat trnasfer occurring, the temperature in integral reactor is made to remain on a steady state, the not fluctuation because of technique change.
(5) pyrolytic reaction terminates the semicoke temperature of rear generation between 450 ~ 650 DEG C, discharge via the discharge port bottom pyrolysis reactor, wherein a part of hot semicoke enters multiple tube screwed feeding machine, enters heat pipe semicoke water cooler, delivers to storage coke installation and store after being cooled to 35 ~ 65 DEG C.Another part slips to tobacco pipe type material returning device through pipeline.
(6) entering the hot semicoke of tobacco pipe type material returning device rests between outer cylinder body and guide shell, under the returning charge air effect entered from bottom, hot semicoke particle expands, upwards toward the indentation, there flowing between outer cylinder body and guide shell, and then entered combustion rise pipe by the air lift air-lift unit come in guide shell from bottom to top.
(7) the hot semicoke in combustion rise pipe, returning charge air, air lift air is converged to, while gravity castering action is carried out to hot semicoke, oxygen components effect generating portion in the carbon component of hot semicoke and air is burnt, the heat that burning produces, by semicoke particle and gas absorption, forms the heat smoke of high-temperature semi-coke and high temperature.
(8) carrying out first time after high-temperature semi-coke and heat smoke enter simple separation device is separated, and the high-temperature semi-coke separated, after the L-type high-temperature semi-coke controller adjust flux bottom simple separation device, enters cyclone mixer as solid thermal carriers.The heat smoke separated be entrained with powdery semi-coke powder enter cyclonic separator do further whirlwind trapping, semicoke dust trap, through cooling process after storage.Heat smoke is after the thermal insulation layer of box-type multi-tube tornado dust collector, and discharger carries out heat recuperation process.
(9) box-type multi-tube tornado dust collector are entered from the pyrolysis oil gas collector pyrolysis oil gas out at pyrolysis reactor top, under the dustproof function of multicyclone, pyrolysis oil gas is purified, pyrolysis oil gas after purification is a part of after high-temperature centrifugal fan pressurization, as conveying gas and gaseous heat-carrier; Part carrying device, adopts the processing method known carry out cooling process to it and reclaim coal tar.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier, it is characterized in that, comprise the pyrolysis reactor (a) of dried feed coal bunker (m) and reducing, the top exit of described pyrolysis reactor (a) is provided with pyrolysis oil gas collector (b), cyclone mixer (c) is kept in middle part, bottom is provided with ventilative recuperation layer (d), bottom is provided with two hot semicoke outlets, hot semicoke is discharged by an outlet, another outlet connects the entrance of tobacco pipe type material returning device (g) by pipeline, the outlet of tobacco pipe type material returning device (g) connects combustion rise pipe (h), the import of simple separation device (i) is connected to behind bending 90 degree of the upper horizontal direction of combustion rise pipe (h), the outlet at bottom of simple separation device (i) is provided with L-type high-temperature semi-coke control valve, dried feed coal bunker (m) bottom is provided with L-type dried feed coal control valve (n), the outlet of L-type high-temperature semi-coke control valve and the outlet of L-type dried feed coal control valve enter from the cylinder lateral wall of pyrolysis reactor (a) respectively and are connected with two of cyclone mixer (c) entrances, the outlet (i) of simple separation device is connected with the entrance of cyclonic separator (j), the outlet of cyclonic separator (j) is connected with the entrance of the thermal insulation layer of box-type multi-tube tornado dust collector (k), pyrolysis oil gas collector (b) that pyrolysis reactor (a) top is arranged is connected with the oil gas inlet manifold case of box-type multi-tube tornado dust collector (k), the outlet of box-type multi-tube tornado dust collector (k) is connected with high-temperature centrifugal fan (1), high-temperature centrifugal fan (1) outlet is connected with L-type high-temperature semi-coke control valve with L-type dried feed coal control valve respectively.
2. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 1, it is characterized in that, this device also comprises multiple tube screwed feeding machine (e) and heat pipe semicoke water cooler (f), a hot semicoke outlet of pyrolysis reactor (a) bottom is connected with multiple tube screwed feeding machine (e), and multiple tube screwed feeding machine (e) is connected with heat pipe semicoke water cooler (f).
3. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 1, it is characterized in that, the pyrolysis reactor epimere of described reducing is expanding reach (a1), hypomere is conversion zone (a2), expanding reach diameter (A-d1) is 1.1 ~ 1.8 times of conversion zone diameter (A-d2), 0.75 ~ 1.12 times that the pyrolysis reactor expanding reach height (A-h1) of reducing is conversion zone height (A-h2); The base plate (b1) that described pyrolysis oil gas collector comprises cylindrical shape and the blinds (b2) be arranged on base plate (b1), the tangent line angle of the base plate cylindrical of louvres and pyrolysis oil gas collector is 30 ~ 65 degree.
4. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 1, is characterized in that, the pyrolysis reactor expanding reach diameter of described reducing is 1.2 ~ 1.6 times of conversion zone diameter, and expanding reach height is 0.8 ~ 1.0 times of conversion zone height; The tangent line angle of the base plate cylindrical of louvres and pyrolysis oil gas collector is 35 ~ 45 degree.
5. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 1, it is characterized in that, described cyclone mixer (c) comprises cylindrical shell (c5) and the cone (c6) of cylinder shape, cylindrical shell (c5) below of cylinder shape is connected with cone (c6), the tangential place on cylindrical shell top respectively opposed be provided with two be tilted under feed-pipe (c1), cylindrical shell top is provided with vapor pipe (c3), exhaust outlet correspondence is provided with distribution cap (c4), cone (c6) bottom is provided with tremie pipe (c7), the cylindrical shell arranged outside of tremie pipe (c7) has the drainage conduit (c8) of two groups of totally 8 identical inclination angle different lengthss, the end of drainage conduit (c8) is provided with flutter valve (c9), cone (c6) height is 1.2 ~ 2.7 times of cylindrical shell (c5) height.
6. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 1, it is characterized in that, described tobacco pipe type material returning device comprises the outer cylinder body (g2) of cylinder shape, outer cylinder body (g2) inside is provided with columniform guide shell (g1), the height of guide shell (g1) lower than outer cylinder body (g2) highly, guide shell (g1) bottom connects returning charge blast main (g7), pore is provided with bottom returning charge blast main, be provided with for carrying out the base plate (g6) sealed between guide shell (g1) and outer cylinder body (g2), outer cylinder body sidepiece surface thereof is provided with solid material feeder pipe (g4), the upper end of outer cylinder body (g2) is provided with a conical head (g3), conical head (g3) top connects combustion rise pipe.
7. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 1, it is characterized in that, described simple separation device comprises cylindrical tube, head slab shape end socket and bottom pyramidal end socket, described cylindrical tube, head slab shape end socket and bottom pyramidal end socket are sealed to form, the tangential level connection joint of cylindrical tube has the feed-pipe of cyclone mixer, the centre of head slab shape end socket is provided with gaseous phase outlet, this gaseous phase outlet is connected with cyclonic separator, and bottom pyramidal end socket connects L-type high-temperature semi-coke control valve.
8. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 2, is characterized in that, described ventilative recuperation layer comprises the heavy wall concentric reducer that multilayer is arranged;
Described box-type multi-tube tornado dust collector are square-box-shaped structure, comprise casing, box house staggered floor Heterogeneous Permutation has multiple cyclonic separator, the outlet of each cyclonic separator is all provided with trip valve, box house is tiltedly installed with dividing plate, casing is divided into two portions by this dividing plate, and a part is the pyrolysis oil gas inlet manifold case of box-type multi-tube tornado dust collector, and a part is the thermal insulation layer of box-type multi-tube tornado dust collector;
Described heat pipe semicoke water cooler comprises casing (f2), the top of described casing (f2) is provided with long strip type opening for feed, bottom is discharge gate, this opening for feed connects with multiple tube screwed feeding machine (e) with multiple outlet, casing (f2) inside is provided with multiple heat pipes (f7) that S type is arranged, the bottom of heat pipe (f7) is filling pipe end, top is water return outlet, heat pipe (f7) is through the corresponding casing (f2) arranged, heat pipe part is made to be placed in casing outside, outside heat pipe surface arranges radiating fin (f6), be placed in 0.6 ~ 1.5 times that outside heat pipe total length is inner heat pipe.
9. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 8, is characterized in that, described cyclonic separator number is 20 ~ 1000;
The specification of described concentric reducer has 100 × 80,125 × 80,150 × 100,200 × 150, and 250 × 200,300 × 200,300 × 250,350 × 200,350 × 250; Described ventilative recuperation layer comprises 6 ~ 25 layers of heavy wall concentric reducer arranged;
Described is placed in 0.8 ~ 1.2 times that outside heat pipe total length is inner heat pipe.
10. the quick pulverized coal pyrolysis device of gas-solid mixing thermal barrier according to claim 1, is characterized in that, described combustion rise pipe (h) is made up of outer field stainless steel basic unit and inner ceramic wearing coat.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105238425A (en) * | 2015-10-15 | 2016-01-13 | 陕西美斯林能源科技研究院 | Gas-solid mixed heat carrier quick pulverized coal pyrolysis process and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105238425A (en) * | 2015-10-15 | 2016-01-13 | 陕西美斯林能源科技研究院 | Gas-solid mixed heat carrier quick pulverized coal pyrolysis process and device |
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