CN202415457U - External material returning carbonization furnace for low temperature carbonization of coal by utilizing solid thermal carriers - Google Patents
External material returning carbonization furnace for low temperature carbonization of coal by utilizing solid thermal carriers Download PDFInfo
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- CN202415457U CN202415457U CN2012200441782U CN201220044178U CN202415457U CN 202415457 U CN202415457 U CN 202415457U CN 2012200441782 U CN2012200441782 U CN 2012200441782U CN 201220044178 U CN201220044178 U CN 201220044178U CN 202415457 U CN202415457 U CN 202415457U
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Abstract
The utility model provides an external material returning carbonization furnace for low temperature carbonization of coal by utilizing solid thermal carriers, wherein the front end of a cylinder body is provided with a material charge device; a material charge seal is utilized for sealing the cylinder body and the material charge device; a group of forward material guide spiral plates and a group of backward material guide spiral plates are arranged in the cylinder body; the rear end of the cylinder body is provided with a material discharge box; a graphite seal is used for sealing the material discharge box and the cylinder body; the outer part of the cylinder body is provided with a heating device consisting of a clamping sleeve and clamping sleeve seals; two ends of the clamping sleeve are respectively provided with the clamping seals; in the heating region of the cylinder body, the cylinder body is divided into a plurality of bins by a separation plate and a round pipe which is concentric with the cylinder body; and three material returning spiral pipes are distributed out of the cylinder body in a staggered mode. According to the utility model, the temperature of coal can be increased rapidly by utilizing the solid thermal carriers, thus the coal is rapidly subjected to pyrolitic reaction, and the tar yield and gas production quantity are improved.
Description
Technical field
The utility model relates to a kind of solid thermal carriers that utilize makes the coal low-temperature pyrolysis generate the outside returns gas retort of products such as blue charcoal, tar and coal gas.
Background technology
Along with the fast development of Chinese national economy and the quick raising of industrialized level, industrial and agricultural production and people's lives are increasing to the demands for energy amount, country to the comprehensive development and utilization of the energy and Sustainable development require increasingly high.China is energy starved country, and the external interdependency of oil realizes energy-conservation, consumption reduction up to more than 55% in the industrial and agricultural production process, and realizes the comprehensive utilization of the energy, adheres to walking the road of Sustainable development, must rely on scientific and technological advances and scientific and technical innovation.China's low-disintegration coal accounts for more than 60% of coal resources reserves; Employ new technology, novel process, new equipment process the comprehensive utilization that blue charcoal, tar and coal gas are realized low-disintegration coal to low-disintegration coal; The Energy policy and the industrial development planning that meet country; And ability efficient recovery China strategic resource in short supply, can create huge economic benefit.
The low-temperature pyrolysis of solid thermal carriers coal is to be warmed up to feed coal rapidly more than 450 ℃ by the high temperature semicoke; Again through the cylindrical shell indirect heating being made the reaction of coal generation fast pyrogenation; Maximum separate out coal gas and the tar ingredients in the coal; Because heat up rapidly, tar generation second pyrolysis is less, can significantly improve tar yield.The tar that recovery obtains can process diesel oil through subsequent disposal or gasoline is used for industrial and agricultural production; Coal gas is through collecting and purifying, and the purity of coal gas is very high to be better industrial raw material and domestic fuel.
Summary of the invention
The purpose of the utility model provides a kind of outside returns gas retort that utilizes solid thermal carriers to make the coal low-temperature pyrolysis, utilizes can raise the fast temperature of coal of solid thermal carriers, makes coal that pyrolytic reaction take place rapidly, has improved tar yield and gas yield.
The technical scheme of the utility model is: a kind of outside returns gas retort that utilizes solid thermal carriers to make the coal low-temperature pyrolysis; It is characterized in that: barrel front end is a feeding unit; Seal with charging between cylindrical shell and the feeding unit, in cylindrical shell, be furnished with one group of forward guide spiral plate and one group of reverse guide spiral plate; Cylinder back-end is a feed box, seals with graphite grazing between feed box and the cylindrical shell; The cylindrical shell outside is the heating unit of being made up of chuck and chuck sealing, and chuck sealing is respectively arranged at the chuck two ends; In the cylindrical shell heating zone, with the concentric pipe of cylindrical shell cylindrical shell is divided into a plurality of storehouses, the cylindrical shell outside three returning charge spiral tubes that are interspersed by division plate and one.
Graphite grazing links together through the flange of pressure plates II I and feed box; On pressure plates II I, have each one of semicircle and dovetail groove, in half slot, be pressed into graphite packing IV, in dovetail groove, be pressed into graphite packing III; Pressure plates I V and pressure plates II I link together; The two-layer graphite block that is interspersed of sandwich all has groove on each graphite block, wireline partly is stuck in the graphite block groove around a circle; Hang with balancing weight at the wireline two ends, graphite block is close on the backing plate of cylindrical shell.
Rotating ring bracing frame in the charging sealing is connected on the front end-plate of cylindrical shell; Rotating ring is connected on the rotating ring bracing frame, and rotating ring and stationary ring constitute mechanical seal, have oil-way in the stationary ring both sides; End face has oil groove; Stationary ring is installed on the stationary ring bracing frame, is connected with bellow expansion joint II between the pipe support that is provided with charging elephant trunk, escape pipe and the stationary ring bracing frame, and the cylinder that is used for holding out against stationary ring is housed on pipe support.
Pressure plates II in the chuck sealing is connected with chuck; On pressure plates II, have each one of semicircle and dovetail groove, in half slot, be pressed into graphite packing I, in dovetail groove, be pressed into graphite packing II; The pressure plates II outer end is two-layer many lobe annular graphite blocks; Its endoporus contacts with the cylindrical shell trim, and the graphite block outer end is a pressure plates I, and pressure plates I is connected with pressure plates II graphite block is clipped in the middle; The angle steel that fixed mandril is used is housed on pressure plates I and pressure plates II, is equipped with between push rod and the graphite block and is used for the spring of radial compaction graphite block.
Be provided with the polylith flight in each storehouse, respectively be provided with straight flight in each division plate both sides, all be furnished with the stiffening web plate between flight, division plate and cylindrical shell, the pipe, division plate radially adopts S shape.
This outside returns gas retort adopts multiple seal combination such as bellow expansion joint, mechanical seal at burner, adopt multiple seal combination such as graphite chuck sealing at the stove tail, and gas leak does not take place in steady running under the malleation 300Pa pressure working condition not being higher than to make rotary kiln; Adopt elephant trunk charge raw material coal to be difficult for being broken, elephant trunk is arranged on the end plate of charging sealing element; Cylindrical shell head design forward guide spiral plate and reverse guide spiral plate; Forward and reverse guide spiral plate makes feed coal and high temperature semicoke thorough mixing; Feed coal is rapidly heated more than 450 ℃, makes the coal fast pyrogenation separate out coal gas and tar, avoid the second pyrolysis of tar; Feed coal and high temperature semicoke are moving to the stove tail in the cylindrical shell rotation process behind the burner thorough mixing; Make the temperature of feed coal continue to raise with elevated temperature heat flue gas heating cylinder body outer wall and finally reach 650 ℃ of completion low-temperature pyrolysis processes; With cylindrical shell rotation returning charge spiral tube the high temperature semicoke is turned back to the body of heater head and mix with feed coal, another part semicoke gets into next process through feed box and cools off; The outside returns gas retort can be adjusted returning charge ratio, residence time of material flexibly, thereby satisfies the production requirement of different grain size coal.The elevated temperature heat flue gas heats cylinder body outer wall through chuck, realizes the recycle of elevated temperature heat flue gas, improves thermo-efficiency; The coal gas purity of utilizing solid thermal carriers that the outside returns gas retort of coal low-temperature pyrolysis is produced is high, and tar yield is high, and blue charcoal quality is high; Utilize solid thermal carriers to make the outside returns gas retort of coal low-temperature pyrolysis solve large-scale industrial production of small grain size low-disintegration coal and comprehensive utilization of energy problem; Can realize the variation of the energy; Meet the energy strategy planning and the industrial development planning of country, can create good economic benefit and social benefit.Outside returns gas retort advantage
1) this type gas retort has solved the problem of complex utilization of low-disintegration coal, and the coal gas purity of production is high, high, the blue charcoal quality of tar yield is high.
2) this type gas retort can utilize small grain size coal (diameter is not more than 30mm) to make the high-quality high coal gas of blue charcoal, tar and purity of raw material production.
3) flue gas recirculation of heating system elevated temperature heat utilizes, and thermo-efficiency is high.
4) utilize can raise the fast temperature of coal of solid thermal carriers, make coal that pyrolytic reaction take place rapidly, improved tar yield and gas yield.
5) motor adopts frequency control motor, can adapt under the different working conditions the rotating speed requirement.
6) adopt bellow expansion joint, mechanical seal at the equipment burner, the stove tail adopts multiple seal combination such as graphite grazing, makes equipment have good sealing property, has reduced environmental pollution, has guaranteed the safe operation of equipment.
7) the outside returns device is set outside cylindrical shell, can regulates returning charge flexibly than satisfying the requirement of client to variant prodn quality, productive rate.
8) adopt branch storehouse and fan-shaped flight technology in the cylindrical shell, material is heated prevents again that evenly material is broken.
Description of drawings
Fig. 1 is the structural representation of the utility model outside returns gas retort.
Fig. 2 is a barrel front end guide spiral plate distribution schematic diagram.
Fig. 3 is the A-A sectional view of Fig. 1, promptly divides storehouse, flight arrangement synoptic diagram.
Fig. 4 is that cut-away view is amplified in the part of Fig. 1, i.e. the structural representation of chuck sealing.
Fig. 5 is the structural representation of charging sealing.
Fig. 6 is the structural representation of graphite grazing.
Embodiment
As shown in Figure 1, the main body of equipment is a cylindrical shell 4, and rolling ring I3 and rolling ring II7 are arranged on cylindrical shell 4 two ends, and rolling ring I3 and rolling ring II7 are supported by retaining riding wheel apparatus 11 and riding wheel apparatus 10 respectively; Bull gear 2 is arranged on rolling ring I3 front end, bull gear 2 through with transmission mechanism 12 on pinion(gear) 13 engaged transmission, drive cylindrical shell 4 and upper-part thereof and rotate; Cylindrical shell 4 front ends are feeding unit 1, and feeding unit 1 is provided with charging elephant trunk 14, escape pipe 15, bellow expansion joint I16 etc.; Cylindrical shell 4 rear ends are feed box 8, and feed box 8 is provided with discharge port; Feed box 8 is supported by support 9; Seal with graphite grazing 17 between feed box 8 and the cylindrical shell 4; Cylindrical shell 4 outsides are the heating unit of being made up of chuck 5 and chuck sealing 6.
Like Fig. 4 and shown in Figure 1, cylindrical shell 4 external heated partly comprise chuck 5 and chuck sealing 6, and chuck sealing 6 is located at chuck 5 two ends, and the thermal insulation layer 25 and the flame retardant coating 26 of chuck 5 is positioned at the inside of chuck housing 27, is lined with heat-resisting liner 28 on flame retardant coating 26 surfaces.Begin to be furnished with a plurality of blast inlets 29 according to rational position from chuck 5 rearward end, air outlet 32 is positioned at chuck 5 front portions, and the intravital material of tube is carried out reverse heating; The chuck housing has for 27 times many group sliding supports 30 and one group of stationary bearing 31 to be used for supporting chuck 5.One chuck sealing 6 is respectively arranged at chuck 5 two ends; Pressure plates II 33 in the chuck sealing 6 is connected with chuck 5 usefulness bolts; On pressure plates II 33, have each one of semicircle and dovetail groove, in half slot, be pressed into graphite packing I34 during installation, in dovetail groove, be pressed into graphite packing II35.Pressure plates II 33 outer ends are two-layer many lobe annular graphite blocks 39, and its endoporus contacts with cylindrical shell trim 41.Graphite block 39 outer ends are pressure plates I 40; Pressure plates I 40 is connected with pressure plates II 33 usefulness bolts graphite block 39 is clipped in the middle; The angle steel 36 of fixed mandril 37 usefulness is housed on pressure plates I 40 and pressure plates II 33, is equipped with between push rod 37 and the graphite block 39 and is used for the spring 38 of radial compaction graphite block 39.
As shown in Figure 5, the front end of cylindrical shell 4 seals with charging.Rotating ring bracing frame 42 usefulness bolts in the charging sealing are connected on the front end-plate of cylindrical shell 4; Rotating ring 43 usefulness bolts are connected on the rotating ring bracing frame 42; Rotating ring 43 constitutes mechanical seal with stationary ring 44; Have oil-way 58 in stationary ring 44 both sides, end face has oil groove 59, is made by the automatic railway grease of supplying with of oiling system with assurance to have good lubricated and sealing between stationary ring 44 and rotating ring 43 binding faces; Stationary ring 44 is installed on the stationary ring bracing frame 45; Be connected with bellow expansion joint 46 between the pipe support 47 that is provided with charging elephant trunk 14, escape pipe 15 and the stationary ring bracing frame 45, the cylinder 48 that is used for holding out against stationary ring 44 also is housed on pipe support 47, together the compensation swell increment of being heated and producing owing to cylindrical shell 4.
As shown in Figure 6, seal with graphite grazing 17 between cylindrical shell 4 and the feed box 8.Graphite grazing 17 links together through the flange 50 of pressure plates II I52 and feed box 8, on pressure plates II I52, has each one of semicircle and dovetail groove, in half slot, is pressed into graphite packing IV51 during installation, in dovetail groove, is pressed into graphite packing III49.Pressure plates I V53 and pressure plates II I52 link together through bolt; The two-layer graphite block that is interspersed 54 of sandwich; All have groove on each graphite block 54; Wireline 56 partly is stuck in graphite block 54 grooves around a circle, hangs with balancing weight 57 at wireline 56 two ends, and graphite block 54 is close on the backing plate 55 of cylindrical shell 4.
Mesh by pinion(gear) on the transmission mechanism 12 13 and the bull gear 2 that is connected on the cylindrical shell 4 during the running of outside returns gas retort; Driving cylindrical shell 4 rotates on retaining riding wheel apparatus 11 and riding wheel apparatus 10 continuously; Main motor in the transmission mechanism 12 adopts frequency control motor, can adapt under the different working conditions the rotating speed requirement.Its concrete principle of work is following:
When the outside returns gas retort moves; Feed coal gets into cylindrical shells 4 front ends by charging elephant trunk 14, and feed coal and by high temperature semicoke thorough mixing under the effect of transport screw charging guide plate 18 and reverse screw charging guide plate 60 that returning charge spiral tube 24 returns is rapidly heated more than 450 ℃ feed coal; Make the coal fast pyrogenation separate out coal gas and tar; Avoid the second pyrolysis of tar, improve tar yield, divided to go into equably then and accomplish retort process after continuing to heat to certain temperature in each feed bin; Under the rotation of cylindrical shell 4, can make the coal thermally equivalent under the polylith flight 21 in each feed bin, 22 effects of straight flight; Material generates semicoke, tar, coal gas at dry distillation area through pyrolytic reaction, and the intact high temperature semicoke part returning charge on request of destructive distillation is heated raw coal than returned cylindrical shell 4 feed ends by the returning charge spiral tube 24 of rear end, and remainder is discharged through feed box 8; The coal gas that generates is discharged by the air outlet on the feeding unit 1 15.
In retort process, coal is heated and generates a large amount of inflammable and explosive high-temperature gases, and this moment must be isolated with furnace gas and extraneous air, and this equipment adopts multiple seal combination structures such as bellow expansion joint, mechanical seal at burner.When equipment operation, cylindrical shell 4 expanded by heating, rotating ring 43 compresses stationary ring 44 along with cylindrical shell expands, and rotating ring 43 and 44 liang of trims of stationary ring are fitted tightly, and bellow expansion joint II46 pressurized shrinks simultaneously, adjusts the variable quantity that compensation cylindrical shell 4 receives thermal elongation; After cylindrical shell is stable; Stationary ring bracing frame 45 gives stationary ring 44 certain thrust through cylinder 48; Stationary ring 44 and rotating ring 43 are adjacent to all the time; The oil groove 59 that oil-way 58 and the trim of opening in stationary ring 44 both sides opened has guaranteed between stationary ring 44 and 43 liang of trims of rotating ring, to form good lubricated and sealing by the railway grease that oiling system is supplied with automatically.Adopt graphite grazing 17 at stove tail feed box 8 and 4 of cylindrical shells; Pressure plates II I52 forms sealing with 50 of the flanges of feed box 8 with graphite packing IV51; Form the sealing of second road with graphite packing III49 between the backing plate 55 of pressure plates II I52 and cylindrical shell 4 and the flange 50; Be clipped in the backing plate 55 of double-layer graphite piece 54 through wireline 56 and balancing weight 57 and cylindrical shell 4 between pressure plates I V53 and pressure plates II I52 and closely stick together and form three seals, several kinds of seal combination play good sealing effectiveness.
The hot blast of material in the indirect heating cylindrical shell 4; By the hot-air channel that the blast inlet on every section chuck 29 gets between cylindrical shell 4 and the chuck 5, discharge by air outlet 32 subsequently, get into hot air circulating system; Material in the reverse from back to front heating cylindrical shell 4 of hot blast makes the heat exchange better effects if; Because rolling ring I3 and rolling ring II7 are distributed in the two ends of cylindrical shell 4, chuck 5 is continuous chuck, thereby can guarantee the continuity of hot blast to the material heating.
Claims (5)
1. outside returns gas retort that utilizes solid thermal carriers to make the coal low-temperature pyrolysis; It is characterized in that: cylindrical shell (4) front end is feeding unit (1); Seal with charging between cylindrical shell (4) and the feeding unit (1), in cylindrical shell (4), be furnished with one group of forward guide spiral plate (18) and one group of reverse guide spiral plate (60); Cylindrical shell (4) rear end is feed box (8), seals with graphite grazing (17) between feed box (8) and the cylindrical shell (4); Cylindrical shell (4) outside is the heating unit of being made up of chuck (5) and chuck sealing (6), and chuck sealing (6) is respectively arranged at chuck (5) two ends; In cylindrical shell (4) heating zone, with the concentric pipe of cylindrical shell (20) cylindrical shell (4) is divided into a plurality of storehouses, cylindrical shell (4) the outside three returning charge spiral tubes (24) that are interspersed by division plate (19) and one.
2. a kind of outside returns gas retort that utilizes solid thermal carriers to make the coal low-temperature pyrolysis as claimed in claim 1; It is characterized in that: graphite grazing (17) links together with the flange (50) of feed box (8) through pressure plates II I (52); On pressure plates II I (52), have each one of semicircle and dovetail groove, in half slot, be pressed into graphite packing IV (51), in dovetail groove, be pressed into graphite packing III (49); Pressure plates I V (53) and pressure plates II I (52) link together; The two-layer graphite block that is interspersed of sandwich (54), each graphite block all has groove on (54), and wireline (56) partly is stuck in graphite block (54) groove around a circle; Hang with balancing weight (57) at wireline (56) two ends, graphite block (54) is close on the backing plate (55) of cylindrical shell.
3. a kind of outside returns gas retort that utilizes solid thermal carriers to make the coal low-temperature pyrolysis as claimed in claim 1; It is characterized in that: the rotating ring bracing frame (42) in the charging sealing is connected on the front end-plate of cylindrical shell (4); Rotating ring (43) is connected on the rotating ring bracing frame (42), and rotating ring (43) constitutes mechanical seal with stationary ring (44), has oil-way (58) in stationary ring (44) both sides; End face has oil groove (59); Stationary ring (44) is installed on the stationary ring bracing frame (45), is connected with bellow expansion joint II (46) between the pipe support (47) that is provided with charging elephant trunk (14), escape pipe (15) and the stationary ring bracing frame (45), and the cylinder (48) that is used for holding out against stationary ring (44) is housed on pipe support (47).
4. a kind of outside returns gas retort that utilizes solid thermal carriers to make the coal low-temperature pyrolysis as claimed in claim 1; It is characterized in that: the pressure plates II (33) in the chuck sealing (6) is connected with chuck (5); On pressure plates II (33), have each one of semicircle and dovetail groove, in half slot, be pressed into graphite packing I (34), in dovetail groove, be pressed into graphite packing II (35); Pressure plates II (33) outer end is two-layer many lobe annular graphite blocks (39); Its endoporus contacts with cylindrical shell trim (41), and graphite block (39) outer end is pressure plates I (40), and pressure plates I (40) is connected with pressure plates II (33) graphite block (39) is clipped in the middle; The angle steel (36) of fixed mandril (37) usefulness is housed on pressure plates I (40) and pressure plates II (33), is equipped with between push rod (37) and the graphite block (39) and is used for the spring (38) of radial compaction graphite block (39).
5. a kind of outside returns gas retort that utilizes solid thermal carriers to make the coal low-temperature pyrolysis as claimed in claim 1; It is characterized in that: be provided with polylith flight (21) in each storehouse; Respectively be provided with straight flight (22) in each division plate (19) both sides; All be furnished with stiffening web plate (23) between flight (21), division plate (19) and cylindrical shell (4), the pipe (20), division plate (19) radially adopts S shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200441782U CN202415457U (en) | 2012-02-10 | 2012-02-10 | External material returning carbonization furnace for low temperature carbonization of coal by utilizing solid thermal carriers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200441782U CN202415457U (en) | 2012-02-10 | 2012-02-10 | External material returning carbonization furnace for low temperature carbonization of coal by utilizing solid thermal carriers |
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| CN202415457U true CN202415457U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200441782U Expired - Lifetime CN202415457U (en) | 2012-02-10 | 2012-02-10 | External material returning carbonization furnace for low temperature carbonization of coal by utilizing solid thermal carriers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925175A (en) * | 2012-11-01 | 2013-02-13 | 长安大学 | Coal dry distillation method and device for realizing same |
| CN103642514A (en) * | 2013-12-11 | 2014-03-19 | 刘建波 | Efficient heat-collection type hot blast rotary cracking furnace |
| CN104789243A (en) * | 2015-04-03 | 2015-07-22 | 河南龙成煤高效技术应用有限公司 | Coal pyrolysis equipment |
| CN105349157A (en) * | 2015-11-23 | 2016-02-24 | 中国庆华能源集团有限公司 | Rotary type pyrolysis reactor and pyrolysis method |
| CN106350085A (en) * | 2016-09-09 | 2017-01-25 | 新疆广汇中化能源技术开发有限公司 | Dry distillation apparatus |
| CN113289630A (en) * | 2021-05-19 | 2021-08-24 | 哈尔滨工业大学（深圳） | Catalyst for diesel reforming reaction, preparation method thereof, hydrogen production reformer and system |
-
2012
- 2012-02-10 CN CN2012200441782U patent/CN202415457U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925175A (en) * | 2012-11-01 | 2013-02-13 | 长安大学 | Coal dry distillation method and device for realizing same |
| CN102925175B (en) * | 2012-11-01 | 2013-11-06 | 长安大学 | Coal dry distillation method and device for realizing same |
| CN103642514A (en) * | 2013-12-11 | 2014-03-19 | 刘建波 | Efficient heat-collection type hot blast rotary cracking furnace |
| CN104789243A (en) * | 2015-04-03 | 2015-07-22 | 河南龙成煤高效技术应用有限公司 | Coal pyrolysis equipment |
| CN105349157A (en) * | 2015-11-23 | 2016-02-24 | 中国庆华能源集团有限公司 | Rotary type pyrolysis reactor and pyrolysis method |
| CN106350085A (en) * | 2016-09-09 | 2017-01-25 | 新疆广汇中化能源技术开发有限公司 | Dry distillation apparatus |
| CN113289630A (en) * | 2021-05-19 | 2021-08-24 | 哈尔滨工业大学（深圳） | Catalyst for diesel reforming reaction, preparation method thereof, hydrogen production reformer and system |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20120905 |
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| CX01 | Expiry of patent term |