CN102757800B - 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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- CN102757800B CN102757800B CN2012101879888A CN201210187988A CN102757800B CN 102757800 B CN102757800 B CN 102757800B CN 2012101879888 A CN2012101879888 A CN 2012101879888A CN 201210187988 A CN201210187988 A CN 201210187988A CN 102757800 B CN102757800 B CN 102757800B
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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 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 refers to solid organic matters and heat the process that pyrolytic reaction occurs under the state of isolated air, be broadly divided into low temperature, middle temperature, high temperature and ultrahigh-temperature destructive distillation according to different Heating temperatures, the industrial coal carbonization that is usually used in, and adopt low-temperature pyrolysis (500～650 ℃) can be widely used in the low-grade fossil energies such as low-rank coal and resinous shale, its product can obtain tar and the coal gas of high yield, and the remaining solid thing is that height contains the charcoal semicoke.Distillation process is for the treatment of the existing very long history such as coal, resinous shale and petroleum residue, take coal as example, its pyrogenation and carbonization technology started from for 20 beginnings of the century, low-temperature pyrolysis (pyrolysis) method for upgrading that a lot of coals once occurred in history, but industrial succeed only have several, these methods are divided into outside external-heat, internal heat type and interior heat hot hybrid by the type of heating of stove, can be divided into again gaseous heat-carrier, solid thermal carriers mode according to heating medium, whether contact with material according to heating medium and be divided into direct heating and indirect heating mode.
The 1950's, along with exploitation and the application of world wide oil, Sweet natural gas, the pyrolytic process of coal tempo slows down and even pauses, but, in the abundant country of some coal resources, never is interrupted the research and development to pyrolysis of coal.20 century 70s,, due to three times, world oil crisis with to the growth of clean energy demand, cause the attention to low-rank coal and resinous shale equal energy source pyrogenation and carbonization once again., along with people pay attention to again to the research and development of pyrolytic process of coal, develop successively some novel procesies.These novel procesies are directly burnt and are compared with coal, can produce the product of three kinds of different shapes of gas, liquid, solid, be actually heterogeneity in coal is carried out the sub-prime utilization, in pyrolysis product: hydrogenation of tar can be produced petroleum supplements and the refinery cokes such as gasoline, diesel oil, residual oil; Coal gas can be used as the unstripped gas of clean fuel and inhibition and generation work 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, is also gasification raw material, the sorbing material of high-quality.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 significant economic benefit and environmental benefit, meet national industrial policies.
Abroad, the states such as U.S., day, moral, Australia have extensively carried out research and test work, ratify and subsidize at Gillette town, Wyoming State Buckskin construction of coal mine one cover day and process the brown coal drying destructive distillation Industrial demonstration device of 1000 tons as USDOE in 1989, go into operation in June, 1992, nearly 5 years have been moved, the liquid product that extracts from coal (CDL), as oil replacement fuel, the commercialization factory that year processing coal is 3,000,000 tons is just among design and establishing.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, product easily separates.
China starts to carry out the R and D work of pyrolytic process of coal the 1950's.The 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 Group, successively developed the pyrolysis of coal technology of different process, and set up Large Scale Industrial Process.Start to build up a collection of internal heat type block furnace long-flame coal lump coal gas retort take three river coalification companies as representative at the beginning of area, Yulin 90, from single stove ability 3～50,000 ton/years, develop into present single stove ability 7.5～100,000 ton/years, the large-scale gas retort that single stove is 200,000 ton/years also puts into operation, has succeeded in developing simultaneously the type of furnaces such as externally heated retort oven, two-part gas retort.Total capacity reaches more than 2,600 ten thousand tons.
Less with respect to coal for the pyrogenation and carbonization technical study of resinous shale both at home and abroad, present stage is generally take low-temperature pyrolysis as main.At present, exist more than 20 kind of low-temperature pyrolysis technology both at home and abroad, various technology respectively have relative merits, and mostly there are the problems such as poor stability, efficiency ratio, low, the oily yield of gas production rate quality are low, energy dissipation, high cost in existing apparatus and technique, need to be resolved hurrily.
Summary of the invention
The invention provides a kind of Apparatus and method for of low-temperature pyrolysis 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 equipment of low-temperature pyrolysis for low-rank coal, resinous shale, formed 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;
Described gas retort revolution main frame is the tubular structure from feed end to the downward-sloping layout of discharge end; Tubular structure comprises feed zone minor diameter cylinder, conversion zone major diameter cylinder and discharging section minor diameter cylinder three parts, and conversion zone major diameter cylinder two ends are connected with discharging section minor diameter cylinder with feed zone minor diameter cylinder by cone section cylinder respectively; The feed end of feed zone minor diameter cylinder is connected with the charging inner end plate, and at the charging inner end plate, be covered with the charging outer end plate, the charging outer end plate is connected with towards the one side of charging inner end plate the feed end material delivering plate that is the transport screw distribution, and charging outer end plate one side center outwardly connects the charging quill shaft; The discharge end of discharging section minor diameter cylinder is connected with the discharging inner end plate, and at the discharging inner end plate, be covered with the discharging outer end plate, the discharging outer end plate is connected with towards the one side of discharging inner end plate the discharge end material delivering plate that is the reverse screw distribution, and discharging outer end plate one side center outwardly connects the discharging quill shaft; Tubular structure inside is distributed with vertically with one heart for the storage solid materials and as the inner helix pipe that reacts the bubbing flow passage, the inner helix pipe inwall is distributed with for the screw-blade that drives solid materials, charging inner end plate and discharging inner end plate are Cellular board, the inner helix pipe two ends are connected with the honeycomb hole that the charging inner end plate is connected with the discharging inner end plate respectively, conversion zone major diameter cylinder is internally connected with the support orifice plate of arranged transversely, and inner helix pipe passes the hole of supporting on orifice plate and props up that to be located at conversion zone major diameter cylinder inner;
Described feed zone minor diameter 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 feed zone minor diameter cylinder outer wall, feed zone minor diameter 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;
Described discharging section minor diameter 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 discharging section minor diameter cylinder outer wall, discharging section minor diameter 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;
Described gas retort revolution main frame is by main motor, main gear reducer, pinion(gear) and master wheel driven rotary, master wheel is connected to feed zone minor diameter 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;
Described material screw feeder comprises feeding serew, feeding serew casing, feeding serew drive-motor and feed chute; It is inner that feeding serew is installed on the feeding serew casing, the feeding serew front end drives rotation by the feeding serew drive-motor, the feeding serew end inserts in the cavity of gas retort revolution main frame, feeding serew casing rear portion is connected with the charging quill shaft of gas retort revolution main frame by the feed end seal head, feeding serew casing end face is having feeding mouth with the anterior corresponding position of feeding serew, and feed chute is connected with feeding mouth;
Described gas solid separation case comprises gas solid separation case body, gas exit and semicoke discharging blocking valve, the feeding mouth of gas solid separation case body side is connected with the discharging quill shaft of gas retort revolution main frame by the discharge end seal head, 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.
Described charging quill shaft inwall has the charging internal screw, and discharging quill shaft inwall has the discharging internal screw.
Described support orifice plate periphery is fixed by the tooth plate and the conversion zone major diameter inner wall of rotary drum that are the gear-like distribution.
The bottom of described 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 described 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.
Described tubular structure outer wall is enclosed with one deck refractory materials.
Be connected with expansion joint on the feeding mouth of described material screw feeder, feed chute is connected with feeding mouth through expansion joint.
Described feeding serew drive-motor and main motor are variable-frequency motor.
this employing is used for low-rank coal, the low-temperature cracking process of the low-temperature pyrolysis equipment of resinous shale, material is by the feeding mouth of material screw feeder, under the feeding serew drive-motor drives, rotation by feeding serew pushes to material in the charging quill shaft, again in the charging quill shaft enters cavity between charging outer end plate and charging inner end plate, and along with the rotation of gas retort revolution main frame is fed in different inner helix pipes by the feed end material delivering plate, revolution along with gas retort revolution main frame, inner helix pipe revolves round the sun around the gas retort axis, and along with public affairs turn around, each root inner helix pipe is also from turning around, material under the rotation of the screw-blade of inner helix pipe promotes in pipe to the pitch of front advancing, high-temperature flue gas enters in high-temperature flue gas air inlet ring case from the high-temperature flue gas inlet pipe simultaneously, spend hole to enter in feed zone minor diameter cylinder by high-temperature flue gas entry again, high-temperature flue gas directly contacts and transfers heat to the interior material of inner helix pipe with the outer wall of inner helix pipe, pyrolytic reaction after heating up, material occurs, and separate out carbonizing gas, carbonizing gas is in inner helix pipe imports the gas solid separation case backward, after reaction, remaining solids semicoke constantly moves to low level from the high position of inner helix pipe under the effect of gravity, enter finally in the cavity between discharging outer end plate and discharging inner end plate, kick up and be sent in the discharging quill shaft by the discharge end material delivering plate of tubular structure afterbody, again in the discharging quill shaft enters gas solid separation case body, semicoke sinks down into semicoke discharging blocking valve in gas solid separation case body, semicoke discharging blocking valve only allows the solid semicoke to discharge and does not allow carbonizing gas to discharge, carbonizing gas is discharged by 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 minor diameter cylinder of with the inner helix pipe heat exchange, completing enters in low-temperature flue gas air inlet ring case, final by the discharge of low-temperature flue gas outlet pipe.
Beneficial effect of the present invention is as follows:
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 interior stacking factor of gas retort, improved stand-alone device output.Because material and flue gas belong to indirect contact, and with the rotation material of tubular structure in inner helix pipe with the abundant heat exchange of tube wall, thermal conduction is fast, heat exchange efficiency is high.Adopt the mode of indirect heating, hot flue gas not with mixing of materials, so material is heated the rear carbonization gas of separating out and do not contain other impurity, gas purity is high, 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 the process of rotating, material be unloaded to the gas solid separation case.Whole gas retort whole set adopts refractory materials to do insulation, and heat loss is few, and is energy-conservation.
Gas retort revolution main frame and feeding serew rotate by separately variable-frequency motor and actuator drives, thereby realize lifting and the propelling of material and porcelain ball.Owing to adopting variable-frequency motor, thus feeding capacity and gas retort tubular structure velocity of rotation all adjustable, 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 has improved security and the controllability of equipment.
Low-temperature pyrolysis simple in equipment of the present invention, process that output is large, heat-exchange efficient energy-saving, carbonizing gas purity be high, the low-temperature pyrolysis of the 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, the products such as high-grade coal gas, tar, shale oil, semicoke can be obtained.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is 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, the 6-feed chute, 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-cone 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 minor diameter 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 minor diameter cylinder, 47-feed end seal head, 48-feeding serew casing, 49-discharge end seal head, the 50-refractory materials.
Embodiment
Embodiment is shown in Figure 1, this equipment of low-temperature pyrolysis for low-rank coal, resinous shale, formed 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;
Described gas retort revolution main frame is the tubular structure from feed end to the downward-sloping layout of discharge end; Tubular structure comprises feed zone minor diameter cylinder 46, conversion zone major diameter cylinder 19 and discharging section minor diameter cylinder 36 3 parts, the tubular structure outer wall is enclosed with one deck refractory materials 50, is connected and is connected with discharging section minor diameter cylinder with feed zone minor diameter cylinder 46 by cone section cylinder 17 respectively in conversion zone major diameter cylinder 19 two ends; The feed end of feed zone minor diameter cylinder 46 is connected with charging inner end plate 10, and at charging inner end plate 10, be covered with charging outer end plate 8, charging outer end plate 8 is connected with towards the one side of charging inner end plate 10 the feed end material delivering plate 9 that is the transport screw distribution, 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 minor diameter cylinder 36 is connected with discharging inner end plate 25, and at discharging inner end plate 25, be covered with discharging outer end plate 27, discharging outer end plate 27 is connected with towards the one side of discharging inner end plate 25 the discharge end material delivering plate 26 that is the reverse screw distribution, 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; Tubular structure inside is distributed with vertically with one heart for the storage solid materials and as the inner helix pipe 15 that reacts the bubbing flow passage, inner helix pipe 15 inwalls are distributed with for the screw-blade 16 that drives 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 the honeycomb hole on the discharging inner end plate is connected 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 orifice plate 18 and props up and be located at conversion zone major diameter cylinder 19 inside;
Described feed zone minor diameter 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 minor diameter cylinder 46 outer walls, feed zone minor diameter 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;
Described discharging section minor diameter 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 minor diameter cylinder 36 outer walls, discharging section minor diameter 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;
Described 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 to feed zone minor diameter 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;
described material screw feeder comprises feeding serew 4, feeding serew casing 48, feeding serew drive-motor 3 and feed chute 6, feeding serew 4 is installed on feeding serew casing 48 inside, feeding serew 4 front ends drive rotation by feeding serew drive-motor 3, feeding serew 4 ends insert in the cavity of gas retort revolution main frame, feeding serew casing 48 rear portions are connected with the charging quill shaft 7 of gas retort revolution main frame by feed end seal head 47, feeding serew casing 48 end faces are having feeding mouth with the anterior corresponding position of feeding serew 4, be connected with expansion joint 5 on feeding mouth, feed chute 6 is connected with feeding mouth through expansion joint 5, feeding serew casing 48 is seated on feeding serew movable base 2 with the bottom of feeding serew drive-motor 3, feeding serew movable base 2 is walked on feed end guide rail 1 by roller, when equipment generation thermal expansion, base can move on guide rail.
described gas solid separation case comprises gas solid separation case body 29, gas exit 28 and semicoke discharging blocking valve 32, the feeding mouth of gas solid separation case body 29 sides is connected with the discharging quill shaft 33 of gas retort revolution main frame by discharge end seal head 49, 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, the bottom of gas solid separation case body 29 is seated on separator box movable base 31, separator box movable base 31 is walked on discharge end guide rail 30 by roller, when equipment generation thermal expansion, base can move on guide rail.
Shown in Figure 2, described feed end material delivering plate 9 is transport screw and distributes.
Shown in Figure 3, be distributed with cellular perforation on the plate face of described support orifice plate 18, support orifice plate 18 peripheries and fixed with conversion zone major diameter cylinder 19 inwalls by the tooth plate 18.1 that is the gear-like distribution.
Shown in Figure 4, described discharge end material delivering plate 26 is reverse screw and distributes.
Shown in Figure 5, described inner helix pipe 15 is from feed end to the downward-sloping layout of discharge end, and inner helix pipe 15 inwalls are distributed with screw-blade 16.
this employing is used for low-rank coal, the low-temperature cracking process of the low-temperature pyrolysis equipment of resinous shale, material is by the feeding mouth of material screw feeder, under feeding serew drive-motor 3 drives, rotation by feeding serew 4 pushes to material in charging quill shaft 7, again in charging quill shaft 7 enters cavity between charging outer end plate 8 and charging inner end plate 10, and along with the rotation of gas retort revolution main frame is fed in different inner helix pipe 15 by feed end material delivering plate 9, revolution along with gas retort revolution main frame, inner helix pipe revolves round the sun around the gas retort axis, and along with public affairs turn around, each root inner helix pipe is also from turning around, material under screw-blade 16 rotation of inner helix pipe 15 promotes in pipe to the pitch of front advancing, high-temperature flue gas enters in high-temperature flue gas air inlet ring case 12 from high-temperature flue gas inlet pipe 11 simultaneously, spend hole 13 to enter in feed zone minor diameter cylinder 46 by high-temperature flue gas entry again, high-temperature flue gas directly contacts and transfers heat to the interior material of inner helix pipe with the outer wall of inner helix pipe 15, pyrolytic reaction after heating up, material occurs, and separate out carbonizing gas, carbonizing gas is in inner helix pipe 15 imports the gas solid separation case backward, after reaction, remaining solids semicoke constantly moves to low level from the high position of inner helix pipe 15 under the effect of gravity, enter finally in the cavity between discharging outer end plate 27 and discharging inner end plate 25, kick up and be sent in discharging quill shaft 33 by the discharge end material delivering plate 26 of tubular structure afterbody, again in discharging quill shaft 33 enters gas solid separation case body 29, sink down into semicoke discharging blocking valve 32 at gas solid separation case body 29 interior semicokes, 32 of semicoke discharging blocking valves allow the solid semicoke to discharge and do not allow carbonizing gas to discharge, carbonizing gas is discharged by 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 minor diameter cylinder 36 of with inner helix pipe 15 heat exchange, completing enters in low-temperature flue gas air inlet ring case 23, final by 24 discharges of low-temperature flue gas outlet pipe.
Claims (7)
1. low-temperature pyrolysis equipment that is used for low-rank coal, resinous shale, it is characterized in that: by gas retort revolution main frame, material screw feeder, gas solid separation case three parts, formed, 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;
described gas retort revolution main frame is the tubular structure from feed end to the downward-sloping layout of discharge end, tubular structure comprises feed zone minor diameter cylinder (46), conversion zone major diameter cylinder (19) and discharging section minor diameter cylinder (36) three parts, and conversion zone major diameter cylinder (19) two ends are connected 36 with feed zone minor diameter cylinder (46) with discharging section minor diameter cylinder by cone section cylinder (17) respectively) be connected, the feed end of feed zone minor diameter cylinder (46) is connected with charging inner end plate (10), and at charging inner end plate (10), be covered with charging outer end plate (8), charging outer end plate (8) is connected with towards the one side of charging inner end plate (10) the feed end material delivering plate (9) that is the transport screw distribution, and charging outer end plate (8) one side center outwardly connects charging quill shaft (7), the discharge end of discharging section minor diameter cylinder (36) is connected with discharging inner end plate (25), and at discharging inner end plate (25), be covered with discharging outer end plate (27), discharging outer end plate (27) is connected with towards the one side of discharging inner end plate (25) the discharge end material delivering plate (26) that is the reverse screw distribution, and discharging outer end plate (27) one side center outwardly connects discharging quill shaft (33), tubular structure inside is distributed with vertically with one heart for the storage solid materials and as the inner helix pipe (15) that reacts the bubbing flow passage, inner helix pipe (15) inwall is distributed with for the screw-blade (16) that drives solid materials, charging inner end plate (10) and discharging inner end plate (25) are Cellular board, inner helix pipe (15) two ends are connected 25 with charging inner end plate (10) with the discharging inner end plate respectively) on honeycomb hole be connected, conversion zone major diameter cylinder (19) is internally connected with the support orifice plate (18) of arranged transversely, inner helix pipe (15) passes the hole of supporting on orifice plate (18) and props up and be located at conversion zone major diameter cylinder (19) inside,
Described feed zone minor diameter 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 minor diameter cylinder (46) outer wall, feed zone minor diameter 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);
Described discharging section minor diameter 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 minor diameter cylinder (36) outer wall, discharging section minor diameter 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);
Described 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 to feed zone minor diameter cylinder (46) outer wall, conversion zone major diameter cylinder (19) is anterior supports 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;
Described material screw feeder comprises feeding serew (4), feeding serew casing (48), feeding serew drive-motor (3) and feed chute (6); Feeding serew (4) is installed on feeding serew casing (48) inside, feeding serew (4) front end drives rotation by feeding serew drive-motor (3), feeding serew (4) end inserts in the cavity of gas retort revolution main frame, feeding serew casing (48) rear portion is connected with the charging quill shaft (7) of gas retort revolution main frame by feed end seal head (47), feeding serew casing (48) end face is having feeding mouth with the anterior corresponding position of feeding serew (4), and feed chute (6) is connected with feeding mouth;
Described gas solid separation case comprises gas solid separation case body (29), gas exit (28) and semicoke discharging blocking valve (32), the feeding mouth of gas solid separation case body (29) side is connected with the discharging quill shaft (33) of gas retort revolution main frame by discharge end seal head (49), 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;
Described charging quill shaft (7) inwall has the charging internal screw, and discharging quill shaft (33) inwall has the discharging internal screw;
Described 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.
2. the equipment of the low-temperature pyrolysis for low-rank coal, resinous shale according to claim 1, it is characterized in that: described feeding serew casing (48) is seated on feeding serew movable base (2) with the bottom of feeding serew drive-motor (3), and feeding serew movable base (2) is walked on feed end guide rail (1) by roller.
3. the equipment of the low-temperature pyrolysis for low-rank coal, resinous shale according to claim 1, it is characterized in that: the bottom of described gas solid separation case body (29) is seated on separator box movable base (31), and separator box movable base (31) is walked on discharge end guide rail (30) by roller.
4. the equipment of the low-temperature pyrolysis for low-rank coal, resinous shale according to claim 1, it is characterized in that: described tubular structure outer wall is enclosed with one deck refractory materials (50).
5. the equipment of the low-temperature pyrolysis for low-rank coal, resinous shale according to claim 1, it is characterized in that: be connected with expansion joint (5) on the feeding mouth of described material screw feeder, feed chute (6) is connected with feeding mouth through expansion joint (5).
6. the equipment of the low-temperature pyrolysis for low-rank coal, resinous shale according to claim 1, it is characterized in that: described feeding serew drive-motor (3) and main motor (41) are variable-frequency motor.
7. one kind is adopted claim 1～6 any one described for low-rank coal, the low-temperature cracking process of the low-temperature pyrolysis equipment of resinous shale, it is characterized in that: material is by the feeding mouth of material screw feeder, under feeding serew drive-motor (3) drives, rotation by feeding serew (4) pushes to material in charging quill shaft (7), again in charging quill shaft (7) enters cavity between charging outer end plate (8) and charging inner end plate (10), and along with the rotation of gas retort revolution main frame is fed in different inner helix pipe (15) by feed end material delivering plate (9), revolution along with gas retort revolution main frame, inner helix pipe revolves round the sun around the gas retort axis, and along with public affairs turn around, each root inner helix pipe is also from turning around, material under the rotation of the screw-blade (16) of inner helix pipe (15) promotes in pipe to the pitch of front advancing, high-temperature flue gas enters in high-temperature flue gas air inlet ring case (12) from high-temperature flue gas inlet pipe (11) simultaneously, spend hole (13) to enter in feed zone minor diameter cylinder (46) by high-temperature flue gas entry again, high-temperature flue gas directly contacts and transfers heat to the interior material of inner helix pipe with the outer wall of inner helix pipe (15), pyrolytic reaction after heating up, material occurs, and separate out carbonizing gas, carbonizing gas imports in the gas solid separation case backward through inner helix pipe (15), after reaction, remaining solids semicoke constantly moves to low level from the high position of inner helix pipe (15) under the effect of gravity, enter finally in the cavity between discharging outer end plate (27) and discharging inner end plate (25), kick up and be sent in discharging quill shaft (33) by the discharge end material delivering plate (26) of tubular structure afterbody, again in discharging quill shaft (33) enters gas solid separation case body (29), semicoke sinks down into semicoke discharging blocking valve (32) in gas solid separation case body (29), semicoke discharging blocking valve (32) only allows the solid semicoke to discharge and does not allow carbonizing gas to discharge, carbonizing gas is discharged by 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 minor diameter cylinder (36) of with inner helix pipe (15) heat exchange, completing enters in low-temperature flue gas air inlet ring case (23), final by low-temperature flue gas outlet pipe (24) discharge.
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| CN102942940B (en) * | 2012-11-22 | 2013-09-04 | 北京国电龙源环保工程有限公司 | Dual-cone spiral forced feeding device |
| CN103421523A (en) * | 2013-09-02 | 2013-12-04 | 潍坊金丝达环境工程股份有限公司 | Penetrating heating furnace body for cracking furnace continuous gasifying |
| CN104830359A (en) * | 2015-05-06 | 2015-08-12 | 徐州曹氏化工机械制造有限公司 | External heating type coal dry distillation rotary furnace |
| CN105131998A (en) * | 2015-07-09 | 2015-12-09 | 北京中矿科能技术有限公司 | Biomass and coal medium-low temperature pyrolysis quality improving system and technology thereof |
| CN105907415A (en) * | 2016-06-06 | 2016-08-31 | 山东天时空间钢结构工程有限公司 | Horizontal oil shale dry distillation device |
| CN107892933A (en) * | 2017-11-22 | 2018-04-10 | 洛阳建材建筑设计研究院有限公司 | A kind of heating technique of oil shale swinging gas retort indirect heating apparatus |
| 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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| CN1876762A (en) * | 2005-06-08 | 2006-12-13 | 廊坊中石油科学技术研究院 | Horizontal rotating carbonization furnace |
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| GB347121A (en) * | 1929-10-17 | 1931-04-17 | Thomas Malcolm Davidson | Improvements in and relating to rotary retorts for the treatment of oil shale and the like |
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