CN102757800A - Low-temperature dry distillation equipment and method for low-rank coal and oil shale - Google Patents
Low-temperature dry distillation equipment and method for low-rank coal and oil shale Download PDFInfo
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- CN102757800A CN102757800A CN2012101879888A CN201210187988A CN102757800A CN 102757800 A CN102757800 A CN 102757800A CN 2012101879888 A CN2012101879888 A CN 2012101879888A CN 201210187988 A CN201210187988 A CN 201210187988A CN 102757800 A CN102757800 A CN 102757800A
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Abstract
The invention provides low-temperature dry distillation equipment and method for low-rank coal and oil shale. The equipment comprises a gas retort gyring main engine, a material spiral feeding machine and a gas-solid separating box, wherein the material spiral feeding machine is connected with a material inlet end of the gas retort gyring main engine; the gas-solid separating box is connected with a material outlet end of the gas retort gyring main engine; the gas retort gyring main engine adopts a cylindrical structure which is downward obliquely arranged from the material inlet end to the material outlet end; and internal pipes are coaxially concentrically distributed in a barrel body and capable of storing solid materials and reacting to separate out of a gas flowing channel. A high-temperature smoke inlet ring box is circumferentially connected to the external wall of a small-diameter roller at a material inlet section, and a low-temperature smoke inlet ring box is circumferentially connected to the external wall of a small-diameter roller at a material outlet section. The equipment provided by the invention has the advantages of simple structure, high processing output, heat transfer performance, high efficiency, energy conservation and high purity of gas under dry distillation, can be widely used for low-temperature dry distillation on low-grade fossil energies such as various low-rank coal, low-rank oil shale and petroleum residue, and can produce high-grade products such as coal, coke, shale oil and semi-coke.
Description
Technical field
The invention belongs to the low-temperature pyrolysis equipment and the low-temperature cracking process in derived energy chemical field, particularly a kind of low-grade fossil energy.
Background technology
Thereby destructive distillation generally is meant solid organic matters and under the state of secluding air, heats the process that pyrolytic reaction takes place; Be broadly divided into low temperature, middle temperature, high temperature and ultrahigh-temperature destructive distillation according to different heating temperature; Be usually used in coal carbonization in the industry; And adopt low-temperature pyrolysis (500～650 ℃) can be widely used in low-grade fossil energies such as low-rank coal and resinous shale, and its product can obtain the tar and the coal gas of high yield, and the remaining solid thing is that height contains the charcoal semicoke.Distillation process is used to handle existing very long history such as coal, resinous shale and petroleum residue; With the coal is example; Its pyrogenation and carbonization technology started from for 20 beginnings of the century; Low-temperature pyrolysis (pyrolysis) method for upgrading that once occurred a lot of coals in history, but industry go up succeed have only several kinds, these methods by the type of heating of stove be divided into external-heat, internal heat type and in the outer heat of heat hybrid; Can be divided into gaseous heat-carrier, solid thermal carriers mode again according to heating medium, whether contact with material and be divided into direct heating and indirect heating mode according to heating medium.
The 1950's, along with the exploitation and the application of world wide oil, Sweet natural gas, coal cracking technological development speed slows down even pauses, but in the abundant country of some coal resources, never is interrupted the research and development to coal cracking.The seventies in 20th century,, cause attention once again to low-rank coal and resinous shale equal energy source pyrogenation and carbonization owing to three oil crisises in the world with to the clean energy growth of requirement.Along with people's is paid attention to the research and development of coal cracking technology again, develops some novel procesies successively.These novel procesies are directly burnt with coal and are compared; Can produce the product of three kinds of different shapes of gas, liquid, solid; Be actually heterogeneity in the coal is carried out the utilization of branch matter, in the pyrolysis product: hydrogenation of tar can be produced petroleum supplements and refinery cokes such as gasoline, diesel oil, residual oil; Coal gas can be used as the virgin gas of clean fuel and inhibition and generation worker synthetic gas; Semicoke is the high-quality smokeless fuel, can be used as domestic fuel and calcium carbide, iron alloy, iron-smelting blast furnace blowing material, also is that the fine gasification is with raw material, sorbing material.Therefore the pyrogenation and carbonization of coal is the effective ways of the clean high-efficiency comprehensive utilization of coal; Both can reduce the environmental pollution that fire coal causes; Can improve low-rank coal comprehensive utilization of resources rate and value-added content of product again, have remarkable economic efficiency and environmental benefit, meet national industrial policies.
Abroad; States such as U.S.A, day, moral, Australia have extensively carried out research and test work, one cover day of Gillette town Buckskin construction of coal mine handle 1000 tons brown coal drying destructive distillation industry demonstration unit, in June, 1992 operation like USDOE's approval in 1989 and subsidy in the Wyoming State; Nearly 5 years have been moved; The liquid product that from coal, extracts (CDL) is as oil replacement fuel, among the commercialization factory that year processing coal is 3,000,000 tons is designing and building.The Coalcon company of U.S. combinating carbide company has developed advanced on-catalytic hydropyrolysis technology, and pyrolysis temperature is 560 ℃, and hydrogenation pressure is up to 6.9MPa, and its liquids and gases productive rate is high, the product separate easily.
China begins to carry out the R and D work of coal cracking technology the 1950's.Units such as petroleum institute, Beijing, Dalian University of Technology, Zhejiang University, Shanxi coalification institute of the Chinese Academy of Sciences, Beijing coalification institute, Shaanxi coal industry chemical industry group have successively developed the coal cracking technology of different process, and have set up the large scale industry device.Beginning to build up a collection of at the beginning of the area, Yulin 90 is the internal heat type block furnace long-flame coal lump coal gas retort of representative with three river coalification companies; From single stove ability 3～50,000 ton/year; Develop into present single stove ability 7.5～100,000 ton/year; The large-scale gas retort that single stove is 200,000 tons/year also puts into operation, has succeeded in developing the type of furnaces such as externally heated retort oven, two-part gas retort simultaneously.Total capacity reaches more than 2,600 ten thousand tons.
Less with respect to coal as far as the pyrogenation and carbonization technical study of resinous shale both at home and abroad, present stage generally is to be main with low-temperature pyrolysis.At present, exist more than 20 kind of low-temperature pyrolysis technology both at home and abroad, various technology respectively have relative merits, and existing apparatus and technology exist mostly that poor stability, efficiency ratio, low, the oily yield of gas production rate quality are low, problems such as height are crossed in energy dissipation, cost, and the assistant officer is to be solved.
Summary of the invention
The present invention provides a kind of low-temperature pyrolysis Apparatus and method for that is used for low-rank coal, resinous shale, solve that little, the oily yield of low, the single covering device output of poor stability, efficiency ratio, gas production rate quality that existing low-temperature pyrolysis Apparatus and method for exists is low, energy dissipation, production cost cross high technical problem.
This low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale; Constitute by gas retort revolution main frame, material screw feeder, gas solid separation case three parts; The material screw feeder is connected with the feed end of gas retort revolution main frame, and the gas solid separation case is connected with the discharge end of gas retort revolution main frame;
Said gas retort revolution main frame is the tubular structure from the downward-sloping layout of feed end to discharge end; Cylindrical shell comprises feed zone small dia cylinder, conversion zone major diameter cylinder and discharging section small dia cylinder three parts, and conversion zone major diameter cylinder two ends are connected with discharging section small dia cylinder with feed zone small dia cylinder by awl section cylinder respectively; The feed end of feed zone small dia cylinder is connected with the charging inner end plate; And be covered with the charging outer end plate at the charging inner end plate; The charging outer end plate is connected with the feed end material delivering plate that is the transport screw distribution towards the one side of charging inner end plate, and charging outer end plate one side center outwardly connects the charging quill shaft; The discharge end of discharging section small dia cylinder is connected with the discharging inner end plate; And be covered with the discharging outer end plate at the discharging inner end plate; The discharging outer end plate is connected with the discharge end material delivering plate that is the reverse screw distribution towards the one side of discharging inner end plate, and discharging outer end plate one side center outwardly connects the discharging quill shaft; Barrel is distributed with the inner helix pipe that is used to store solid materials and conduct reaction bubbing flow passage vertically with one heart; The inner helix pipe inwall is distributed with the screw-blade that is used to drive solid materials; Charging inner end plate and discharging inner end plate are Cellular board; The inner helix pipe two ends are connected with honeycomb hole on the discharging inner end plate with the charging inner end plate respectively; Conversion zone major diameter drum is connected with the support orifice plate of arranged transversely, and inner helix pipe passes the hole of supporting on the orifice plate and props up and be located at conversion zone major diameter drum;
Said feed zone small dia cylinder outer wall hoop is connected with high-temperature flue gas air inlet ring case; Be provided with the sealing of high-temperature flue gas ring case between high-temperature flue gas air inlet ring case and the feed zone small dia cylinder outer wall; Feed zone small dia cylinder outer wall is being distributed with high-temperature flue gas entry flower hole with high-temperature flue gas air inlet ring case corresponding position; High-temperature flue gas air inlet ring box top is connected with the high-temperature flue gas inlet pipe, and high-temperature flue gas air inlet ring case bottom is provided with high temperature ash discharge blocking valve;
Said discharging section small dia cylinder outer wall hoop is connected with low-temperature flue gas air inlet ring case; Be provided with the sealing of low-temperature flue gas ring case between low-temperature flue gas air inlet ring case and the discharging section small dia cylinder outer wall; Discharging section small dia cylinder outer wall is being distributed with low-temperature flue gas outlet flower hole with low-temperature flue gas air inlet ring case corresponding position; Low-temperature flue gas air inlet ring box top is connected with the low-temperature flue gas outlet pipe, and low-temperature flue gas air inlet ring case bottom is provided with low temperature ash discharge blocking valve;
Said gas retort revolution main frame is by main motor, main gear reducer, pinion(gear) and master wheel driven rotary; Master wheel is connected feed zone small dia cylinder outer wall; Revolution is supported by inboardend rolling ring, inboardend lateral part wheel and inboardend support roller in conversion zone major diameter cylinder front portion, and revolution is supported by sliding end rolling ring, sliding end lateral part wheel and sliding end support roller in conversion zone major diameter cylinder rear portion;
Said material screw feeder comprises feeding serew, feeding serew casing, feeding serew drive-motor and charging elephant trunk; Feeding serew is installed on the feeding serew interior; The feeding serew front end is rotated by the feeding serew drive motor drives; In the cavity of the terminal insertion of feeding serew gas retort revolution main frame; Feeding serew casing rear portion is connected by the charging quill shaft of feed end seal head with gas retort revolution main frame, and feeding serew casing end face is having feeding mouth with the anterior corresponding position of feeding serew, and the charging elephant trunk is connected with feeding mouth;
Said gas solid separation case comprises gas solid separation case body, gas exit and semicoke discharging blocking valve; The lateral feeding mouth of gas solid separation case body is connected by the discharging quill shaft of discharge end seal head with gas retort revolution main frame; Gas exit is located at gas solid separation case bodies top, and semicoke discharging blocking valve is located at gas solid separation case body bottom.
Said charging quill shaft inwall has the charging internal screw, and discharging quill shaft inwall has the discharging internal screw.
Said support orifice plate periphery is by being the tooth plate that gear-like distributes. fixes with conversion zone major diameter inner wall of rotary drum.
The bottom of said feeding serew casing and feeding serew drive-motor is seated on the feeding serew movable base, and the feeding serew movable base is walked on the feed end guide rail by roller.
The bottom of said gas solid separation case body is seated on the separator box movable base, and the separator box movable base is walked on the discharge end guide rail by roller.
Said cylinder body outer wall is enclosed with one deck refractory materials.
Be connected with expansion joint on the feeding mouth of said material screw feeder, the charging elephant trunk is connected with feeding mouth through expansion joint.
Said feeding serew drive-motor and main motor are variable-frequency motor.
This employing is used for the low-temperature cracking process of the low-temperature pyrolysis equipment of low-rank coal, resinous shale; The feeding mouth of material through the material screw feeder, under the feeding serew drive-motor drove, the rotation through feeding serew pushed to material in the charging quill shaft; Again in the charging quill shaft gets into the cavity between charging outer end plate and the charging inner end plate; And along with the rotation of gas retort revolution main frame is fed in the different inner helix pipes by the feed end material delivering plate, along with the revolution of gas retort revolution main frame, inner helix pipe revolves round the sun around the gas retort axis; And along with public affairs turn around; Also from turning around, material rotates the pitch of before the pipe introversion, advancing under the promotion at the screw-blade of inner helix pipe to each root inner helix pipe, and high-temperature flue gas gets in the high-temperature flue gas air inlet ring case from the high-temperature flue gas inlet pipe simultaneously; Get in the feed zone small dia cylinder through high-temperature flue gas entry flower hole again; High-temperature flue gas directly contacts with the outer wall of inner helix pipe and with the material in the heat transferred inner helix pipe, after material heats up pyrolytic reaction takes place, and separate out carbonizing gas; Carbonizing gas is in inner helix pipe imports the gas solid separation case backward; The remaining solids semicoke in reaction back is constantly moved to low level by the high position from inner helix pipe under the effect of gravity, gets at last in the cavity between discharging outer end plate and the discharging inner end plate, is kicked up and is sent in the discharging quill shaft by the discharge end material delivering plate of cylindrical shell afterbody; Again in the discharging quill shaft gets into gas solid separation case body; Semicoke sinks down into semicoke discharging blocking valve in gas solid separation case body, and semicoke discharging blocking valve only allows the solid semicoke to discharge and do not allow carbonizing gas to discharge, and carbonizing gas is then discharged through the gas exit of gas solid separation box top; The low-temperature flue gas outlet flower hole of low-temperature flue gas on discharging section small dia cylinder of accomplishing with the inner helix pipe heat exchange gets in the low-temperature flue gas air inlet ring case, finally discharges through the low-temperature flue gas outlet pipe.
Beneficial effect of the present invention is following:
Gas retort revolution main frame inner concentric distribution inner helix pipe of the present invention can be used for storing the flow passage of material and conduct reaction bubbing.Adopt a plurality of inner helix pipe members to increase the stacking factor in the gas retort, improved stand-alone device output.Because material and flue gas belong to indirect contact, and with the rotation material of cylindrical shell in inner helix pipe with the abundant heat exchange of tube wall, thermal conduction is fast, the heat exchange efficiency height.Adopt the mode of indirect heating, hot flue gas not with mixing of materials, so material is heated the back destructive distillation gas of separating out and do not contain other impurity, the gas purity height is applicable to the raw material as Coal Chemical Industry.The discharging outer end plate of gas retort revolution main frame afterbody is connected with and is the discharge end material delivering plate that reverse screw distributes, and can conveniently material be fed in the discharging quill shaft, and discharging quill shaft inwall has internal screw, can in rotating process, material be unloaded to the gas solid separation case.Whole gas retort whole set adopts refractory materials to do insulation, and heat scatters and disappears few, and is energy-conservation.
Gas retort revolution main frame and feeding serew rotate through separately variable-frequency motor and actuator drives, thereby realize the lifting and the propelling of material and porcelain ball.Owing to adopt variable-frequency motor, so feeding capacity and gas retort cylindrical shell velocity of rotation are all adjustable, and equipment has good modulability, can adapt to different materials, and is controlled good.
Material screw feeder and gas-solid separator box are equipped with the base of walking on guide rail, and when equipment generation thermal expansion, base can move on guide rail, thereby have improved the security and the controllability of equipment.
Low-temperature pyrolysis simple in equipment of the present invention, handle that output is big, heat-exchange efficient energy-saving, carbonizing gas purity be high; The low-temperature pyrolysis of low-grade fossil energies such as all kinds of low-rank coal (as: brown coal, long-flame coal, non-caking coal, weakly caking coal) and resinous shale, petroleum residue can be widely used in, products such as high-grade coal gas, tar, shale oil, semicoke can be obtained.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of Figure 1A-A section.
Fig. 3 is the structural representation of Figure 1B-B section.
Fig. 4 is the structural representation of Fig. 1 C-C section.
Fig. 5 is the structural representation of inner helix pipe.
Reference numeral: 1-feed end guide rail; 2-feeding serew movable base; 3-feeding serew drive-motor; The 4-feeding serew; The 5-expansion joint; 6-charging elephant trunk; 7-charging quill shaft; 8-charging outer end plate; 9-feed end material delivering plate; 10-charging inner end plate; 11-high-temperature flue gas inlet pipe; 12-high-temperature flue gas air inlet ring case; 13-high-temperature flue gas entry flower hole; The 14-master wheel; The 15-inner helix pipe; The 16-screw-blade; 17-awl section cylinder; 18-supports orifice plate; 18.1-tooth plate; 19-conversion zone major diameter cylinder; The rolling ring of 20-inboardend; The rolling ring of 21-sliding end; 22-low-temperature flue gas outlet flower hole; The 23-low-temperature flue gas goes out the compression ring case; 24-low-temperature flue gas outlet pipe; 25-discharging inner end plate; 26-discharge end material delivering plate; 27-discharging outer end plate; The 28-gas exit; 29-gas solid separation case body; 30-discharge end guide rail; 31-separator box movable base; 32-semicoke discharging blocking valve; 33-discharging quill shaft; 34-low temperature ash discharge blocking valve; The sealing of 35-low-temperature flue gas ring case; 36-discharging section small dia cylinder; 37-sliding end lateral part wheel; 38 sliding end support rollers; 39-inboardend lateral part wheel; 40-inboardend support roller; 41-master's motor; The 42-main gear reducer; The 43-pinion(gear); 44-high temperature ash discharge blocking valve; The sealing of 45-high-temperature flue gas ring case; 46-feed zone small dia cylinder; 47-feed end seal head; 48-feeding serew casing; 49-discharge end seal head; The 50-refractory materials.
Embodiment
Embodiment is referring to shown in Figure 1; This low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale; Constitute by gas retort revolution main frame, material screw feeder, gas solid separation case three parts; The material screw feeder is connected with the feed end of gas retort revolution main frame, and the gas solid separation case is connected with the discharge end of gas retort revolution main frame;
Said gas retort revolution main frame is the tubular structure from the downward-sloping layout of feed end to discharge end; Cylindrical shell comprises feed zone small dia cylinder 46, conversion zone major diameter cylinder 19 and discharging section small dia cylinder 36 3 parts; Cylinder body outer wall is enclosed with one deck refractory materials 50, and conversion zone major diameter cylinder 19 two ends are connected with discharging section small dia cylinder 36 with feed zone small dia cylinder 46 by awl section cylinder 17 respectively; The feed end of feed zone small dia cylinder 46 is connected with charging inner end plate 10; And be covered with charging outer end plate 8 at charging inner end plate 10; Charging outer end plate 8 is connected with the feed end material delivering plate 9 that is the transport screw distribution towards the one side of charging inner end plate 10; Charging outer end plate 8 one side center outwardly connects charging quill shaft 7, and charging quill shaft 7 inwalls have the charging internal screw; The discharge end of discharging section small dia cylinder 36 is connected with discharging inner end plate 25; And be covered with discharging outer end plate 27 at discharging inner end plate 25; Discharging outer end plate 27 is connected with the discharge end material delivering plate 26 that is the reverse screw distribution towards the one side of discharging inner end plate 25; Discharging outer end plate 27 one side center outwardly connects discharging quill shaft 33, and discharging quill shaft 33 inwalls have the discharging internal screw; Barrel is distributed with the inner helix pipe 15 that is used to store solid materials and conduct reaction bubbing flow passage vertically with one heart; Inner helix pipe 15 inwalls are distributed with the screw-blade 16 that is used to drive solid materials; Charging inner end plate 10 is Cellular board with discharging inner end plate 25; Inner helix pipe 15 two ends are connected with honeycomb hole on the discharging inner end plate 25 with charging inner end plate 10 respectively; Conversion zone major diameter cylinder 19 is internally connected with the support orifice plate 18 of arranged transversely, and inner helix pipe 15 passes the hole of supporting on the orifice plate 18 and props up and be located at conversion zone major diameter cylinder 19 inside;
Said feed zone small dia cylinder 46 outer wall hoops are connected with high-temperature flue gas air inlet ring case 12; Be provided with high-temperature flue gas ring case sealing 45 between high-temperature flue gas air inlet ring case 12 and feed zone small dia cylinder 46 outer walls; Feed zone small dia cylinder 46 outer walls are being distributed with high-temperature flue gas entry flower hole 13 with high-temperature flue gas air inlet ring case 12 corresponding positions; High-temperature flue gas air inlet ring case 12 tops are connected with high-temperature flue gas inlet pipe 11, and high-temperature flue gas air inlet ring case 12 bottoms are provided with high temperature ash discharge blocking valve 44;
Said discharging section small dia cylinder 36 outer wall hoops are connected with low-temperature flue gas air inlet ring case 23; Be provided with low-temperature flue gas ring case sealing 35 between low-temperature flue gas air inlet ring case 23 and discharging section small dia cylinder 36 outer walls; Discharging section small dia cylinder 36 outer walls are being distributed with low-temperature flue gas outlet flower hole 22 with low-temperature flue gas air inlet ring case 23 corresponding positions; Low-temperature flue gas air inlet ring case 23 tops are connected with low-temperature flue gas outlet pipe 24, and low-temperature flue gas air inlet ring case 23 bottoms are provided with low temperature ash discharge blocking valve 34;
Said gas retort revolution main frame is by main motor 41, main gear reducer 42, pinion(gear) 43 and master wheel 14 driven rotary; Master wheel 14 is connected feed zone small dia cylinder 46 outer walls; Revolution is supported by inboardend rolling ring 20, inboardend lateral part wheel 39 and inboardend support roller 40 in conversion zone major diameter cylinder 19 front portions, and revolution is supported by sliding end rolling ring 21, sliding end lateral part wheel 37 and sliding end support roller 38 in conversion zone major diameter cylinder 19 rear portions;
Said material screw feeder comprises feeding serew 4, feeding serew casing 48, feeding serew drive-motor 3 and charging elephant trunk 6; Feeding serew 4 is installed on feeding serew casing 48 inside; Feeding serew 4 front ends are by feeding serew drive-motor 3 driven in rotation; In the cavity of feeding serew 4 terminal insertion gas retort revolution main frames, feeding serew casing 48 rear portions are connected by the charging quill shaft 7 of feed end seal head 47 with gas retort revolution main frame, and feeding serew casing 48 end faces are having feeding mouth with feeding serew 4 anterior corresponding positions; Be connected with expansion joint 5 on the feeding mouth; Charging elephant trunk 6 is connected with feeding mouth through expansion joint 5, and feeding serew casing 48 is seated on the feeding serew movable base 2 with the bottom of feeding serew drive-motor 3, and feeding serew movable base 2 is walked on the feed end guide rail 1 by roller; When equipment generation thermal expansion, base can move on guide rail.
Said gas solid separation case comprises gas solid separation case body 29, gas exit 28 and semicoke discharging blocking valve 32; Gas solid separation case body 29 lateral feeding mouths are connected by the discharging quill shaft 33 of discharge end seal head 49 with gas retort revolution main frame; Gas exit 28 is located at gas solid separation case body 29 tops; Semicoke discharging blocking valve 32 is located at gas solid separation case body 29 bottoms, and the bottom of gas solid separation case body 29 is seated on the separator box movable base 31, and separator box movable base 31 is walked on the discharge end guide rail 30 by roller; When equipment generation thermal expansion, base can move on guide rail.
Referring to shown in Figure 2, said feed end material delivering plate 9 is transport screw and distributes.
Referring to shown in Figure 3, be distributed with cellular perforation on the plate face of said support orifice plate 18, support orifice plate 18 peripheries and fix with conversion zone major diameter cylinder 19 inwalls by the tooth plate 18.1 that is the gear-like distribution.
Referring to shown in Figure 4, said discharge end material delivering plate 26 is reverse screw and distributes.
Referring to shown in Figure 5, said inner helix pipe 15 is from the downward-sloping layout of feed end to discharge end, and inner helix pipe 15 inwalls are distributed with screw-blade 16.
This employing is used for the low-temperature cracking process of the low-temperature pyrolysis equipment of low-rank coal, resinous shale; The feeding mouth of material through the material screw feeder, under feeding serew drive-motor 3 drove, the rotation through feeding serew 4 pushed to material in the charging quill shaft 7; Again in the cavity that charging quill shaft 7 gets between charging outer end plate 8 and the charging inner end plate 10; And along with the rotation of gas retort revolution main frame is fed in the different inner helix pipe 15 by feed end material delivering plate 9, along with the revolution of gas retort revolution main frame, inner helix pipe revolves round the sun around the gas retort axis; And along with public affairs turn around; Also from turning around, material rotates the pitch of before the pipe introversion, advancing under the promotion at the screw-blade 16 of inner helix pipe 15 to each root inner helix pipe, and high-temperature flue gas gets in the high-temperature flue gas air inlet ring case 12 from high-temperature flue gas inlet pipe 11 simultaneously; Get in the feed zone small dia cylinder 46 through high-temperature flue gas entry flower hole 13 again; High-temperature flue gas directly contacts with the outer wall of inner helix pipe 15 and with the material in the heat transferred inner helix pipe, after material heats up pyrolytic reaction takes place, and separate out carbonizing gas; Carbonizing gas is in inner helix pipe 15 imports the gas solid separation case backward; The remaining solids semicoke in reaction back is constantly moved to low level by the high position from inner helix pipe 15 under the effect of gravity, gets at last in the cavity between discharging outer end plate 27 and the discharging inner end plate 25, is kicked up and is sent in the discharging quill shaft 33 by the discharge end material delivering plate 26 of cylindrical shell afterbody; Again in discharging quill shaft 33 gets into gas solid separation case body 29; Semicoke sinks down into semicoke discharging blocking valve 32 in gas solid separation case body 29, and 32 of semicoke discharging blocking valves allow the solid semicoke to discharge and do not allow carbonizing gas to discharge, and carbonizing gas is then discharged through the gas exit 28 of gas solid separation box top; The low-temperature flue gas outlet flower hole 22 of low-temperature flue gas on discharging section small dia cylinder 36 of accomplishing with inner helix pipe 15 heat exchange gets in the low-temperature flue gas air inlet ring case 23, finally discharges through low-temperature flue gas outlet pipe 24.
Claims (9)
1. low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale; It is characterized in that: constitute by gas retort revolution main frame, material screw feeder, gas solid separation case three parts; The material screw feeder is connected with the feed end of gas retort revolution main frame, and the gas solid separation case is connected with the discharge end of gas retort revolution main frame;
Said gas retort revolution main frame is the tubular structure from the downward-sloping layout of feed end to discharge end; Cylindrical shell comprises feed zone small dia cylinder (46), conversion zone major diameter cylinder (19) and discharging section small dia cylinder (36) three parts, and conversion zone major diameter cylinder (19) two ends are connected with discharging section small dia cylinder (36) with feed zone small dia cylinder (46) by awl section cylinder (17) respectively; The feed end of feed zone small dia cylinder (46) is connected with charging inner end plate (10); And be covered with charging outer end plate (8) at charging inner end plate (10); Charging outer end plate (8) is connected with the feed end material delivering plate (9) that is the transport screw distribution towards the one side of charging inner end plate (10), and charging outer end plate (8) one side center outwardly connects charging quill shaft (7); The discharge end of discharging section small dia cylinder (36) is connected with discharging inner end plate (25); And be covered with discharging outer end plate (27) at discharging inner end plate (25); Discharging outer end plate (27) is connected with the discharge end material delivering plate (26) that is the reverse screw distribution towards the one side of discharging inner end plate (25), and discharging outer end plate (27) one side center outwardly connects discharging quill shaft (33); Barrel is distributed with the inner helix pipe (15) that is used to store solid materials and conduct reaction bubbing flow passage vertically with one heart; Inner helix pipe (15) inwall is distributed with the screw-blade (16) that is used to drive solid materials; Charging inner end plate (10) and discharging inner end plate (25) are Cellular board; Inner helix pipe (15) two ends are connected with honeycomb hole on the discharging inner end plate (25) with charging inner end plate (10) respectively; Conversion zone major diameter cylinder (19) is internally connected with the support orifice plate (18) of arranged transversely, and inner helix pipe (15) passes the hole of supporting on the orifice plate (18) and props up and be located at conversion zone major diameter cylinder (19) inside;
Said feed zone small dia cylinder (46) outer wall hoop is connected with high-temperature flue gas air inlet ring case (12); Be provided with high-temperature flue gas ring case sealing (45) between high-temperature flue gas air inlet ring case (12) and feed zone small dia cylinder (46) outer wall; Feed zone small dia cylinder (46) outer wall is being distributed with high-temperature flue gas entry flower hole (13) with high-temperature flue gas air inlet ring case (12) corresponding position; High-temperature flue gas air inlet ring case (12) top is connected with high-temperature flue gas inlet pipe (11), and high-temperature flue gas air inlet ring case (12) bottom is provided with high temperature ash discharge blocking valve (44);
Said discharging section small dia cylinder (36) outer wall hoop is connected with low-temperature flue gas air inlet ring case (23); Be provided with low-temperature flue gas ring case sealing (35) between low-temperature flue gas air inlet ring case (23) and discharging section small dia cylinder (36) outer wall; Discharging section small dia cylinder (36) outer wall is being distributed with low-temperature flue gas outlet flower hole (22) with low-temperature flue gas air inlet ring case (23) corresponding position; Low-temperature flue gas air inlet ring case (23) top is connected with low-temperature flue gas outlet pipe (24), and low-temperature flue gas air inlet ring case (23) bottom is provided with low temperature ash discharge blocking valve (34);
Said gas retort revolution main frame is by main motor (41), main gear reducer (42), pinion(gear) (43) and master wheel (14) driven rotary; Master wheel (14) is connected feed zone small dia cylinder (46) outer wall; Conversion zone major diameter cylinder (19) is anterior to support revolution by inboardend rolling ring (20), inboardend lateral part wheel (39) and inboardend support roller (40), and revolution is supported by sliding end rolling ring (21), sliding end lateral part wheel (37) and sliding end support roller (38) in conversion zone major diameter cylinder (19) rear portion;
Said material screw feeder comprises feeding serew (4), feeding serew casing (48), feeding serew drive-motor (3) and charging elephant trunk (6); Feeding serew (4) is installed on feeding serew casing (48) inside; Feeding serew (4) front end is by feeding serew drive-motor (3) driven in rotation; In the cavity of the terminal insertion of feeding serew (4) gas retort revolution main frame; Feeding serew casing (48) rear portion is connected by the charging quill shaft (7) of feed end seal head (47) with gas retort revolution main frame; Feeding serew casing (48) end face is having feeding mouth with the anterior corresponding position of feeding serew (4), and charging elephant trunk (6) is connected with feeding mouth;
Said gas solid separation case comprises gas solid separation case body (29), gas exit (28) and semicoke discharging blocking valve (32); The lateral feeding mouth of gas solid separation case body (29) is connected by the discharging quill shaft (33) of discharge end seal head (49) with gas retort revolution main frame; Gas exit (28) is located at gas solid separation case body (29) top, and semicoke discharging blocking valve (32) is located at gas solid separation case body (29) bottom.
2. the low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale according to claim 1 is characterized in that: said charging quill shaft (7) inwall has the charging internal screw, and discharging quill shaft (33) inwall has the discharging internal screw.
3. the low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale according to claim 1 is characterized in that: said support orifice plate (18) periphery is fixed with conversion zone major diameter cylinder (19) inwall by the tooth plate (18.1) that is the gear-like distribution.
4. the low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale according to claim 1; It is characterized in that: said feeding serew casing (48) is seated on the feeding serew movable base (2) with the bottom of feeding serew drive-motor (3), and feeding serew movable base (2) is walked on the feed end guide rail (1) by roller.
5. the low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale according to claim 1; It is characterized in that: the bottom of said gas solid separation case body (29) is seated on the separator box movable base (31), and separator box movable base (31) is walked on the discharge end guide rail (30) by roller.
6. the low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale according to claim 1 is characterized in that: said cylinder body outer wall is enclosed with one deck refractory materials (50).
7. the low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale according to claim 1 is characterized in that: be connected with expansion joint (5) on the feeding mouth of said material screw feeder, charging elephant trunk (6) is connected with feeding mouth through expansion joint (5).
8. the low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale according to claim 1 is characterized in that: said feeding serew drive-motor (3) and main motor (41) are variable-frequency motor.
9. one kind is adopted any said low-temperature cracking process that is used for the low-temperature pyrolysis equipment of low-rank coal, resinous shale of claim 1～8; It is characterized in that: material is through the feeding mouth of material screw feeder; Under feeding serew drive-motor (3) drives; Rotation through feeding serew (4) pushes to material in the charging quill shaft (7); Again in charging quill shaft (7) gets into the cavity between charging outer end plate (8) and the charging inner end plate (10); And along with the rotation of gas retort revolution main frame is fed in the different inner helix pipe (15) by feed end material delivering plate (9), along with the revolution of gas retort revolution main frame, inner helix pipe revolves round the sun around the gas retort axis; And along with public affairs turn around; Also from turning around, the screw-blade (16) of material in inner helix pipe (15) rotates the pitch of before the pipe introversion, advancing under the promotion to each root inner helix pipe, and high-temperature flue gas gets in the high-temperature flue gas air inlet ring case (12) from high-temperature flue gas inlet pipe (11) simultaneously; Get in the feed zone small dia cylinder (46) through high-temperature flue gas entry flower hole (13) again; High-temperature flue gas directly contacts with the outer wall of inner helix pipe (15) and with the material in the heat transferred inner helix pipe, after material heats up pyrolytic reaction takes place, and separate out carbonizing gas; Carbonizing gas imports in the gas solid separation case through inner helix pipe (15) backward; The remaining solids semicoke in reaction back is constantly moved to low level by the high position from inner helix pipe (15) under the effect of gravity, gets at last in the cavity between discharging outer end plate (27) and the discharging inner end plate (25), is kicked up and is sent in the discharging quill shaft (33) by the discharge end material delivering plate (26) of cylindrical shell afterbody; Again in discharging quill shaft (33) gets into gas solid separation case body (29); Semicoke sinks down into semicoke discharging blocking valve (32) in gas solid separation case body (29), and semicoke discharging blocking valve (32) only allows the solid semicoke to discharge and do not allow carbonizing gas to discharge, and carbonizing gas is then discharged through the gas exit (28) of gas solid separation box top; The low-temperature flue gas outlet flower hole (22) of low-temperature flue gas on discharging section small dia cylinder (36) of accomplishing with inner helix pipe (15) heat exchange gets in the low-temperature flue gas air inlet ring case (23), finally discharges through low-temperature flue gas outlet pipe (24).
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| CN113736496A (en) * | 2021-09-24 | 2021-12-03 | 山东祥桓环境科技有限公司 | Organic waste drying pyrolysis carbonization powder making system and method and heat and mass transfer ball |
| CN113736496B (en) * | 2021-09-24 | 2022-05-20 | 山东祥桓环境科技有限公司 | Organic waste drying pyrolysis carbonization powder making system and method and heat and mass transfer ball |
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| CN102757800B (en) | 2013-11-13 |
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