CN101845312A - Lignite drying and carbonization quality-improving tower with reciprocating and turning-back rolling bed - Google Patents
Lignite drying and carbonization quality-improving tower with reciprocating and turning-back rolling bed Download PDFInfo
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- CN101845312A CN101845312A CN201010170491A CN201010170491A CN101845312A CN 101845312 A CN101845312 A CN 101845312A CN 201010170491 A CN201010170491 A CN 201010170491A CN 201010170491 A CN201010170491 A CN 201010170491A CN 101845312 A CN101845312 A CN 101845312A
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Abstract
The invention relates to a lignite drying and carbonization quality-improving device, in particular to a lignite drying and carbonization quality-improving tower with a reciprocating and turning-back rolling bed. In the quality-improving tower, a drying and carbonization reaction chamber is surrounded by a furnace lining; the top of the reaction chamber is provided with a coal conduit, and the inside of the reaction chamber is divided into multiple layers of drying chambers and multiple layers of carbonization chambers from top to bottom; each drying chamber and each carbonization chamber are provided with an air inlet and an air outlet for introducing and discharging drier or carbonization agent; and each inclined reciprocating grate is installed in each drying chamber and each carbonization chamber, the inclination directions of the reciprocating grates form staggered arrangement from top to bottom, each reciprocating grate is provided with an eccentric drive device, an interlay barrier below the tail part of each reciprocating grate is provided with an interlayer coal seal, a coke quenching tank is connected to the lower part of the interlay coal seal of the carbonization chamber at the bottom layer, and a coal discharging screw conveyer is arranged at the bottom part of the coke quenching tank. The invention solves the problems of raised dust and gas explosion, poor coal layer air permeability, low gas-solid heat transfer efficiency, raw coal burst, nonuniform coal layer temperature and poor regulation and control maneuverability for different sections existing in the traditional lignite drying and carbonization device.
Description
Technical field
The present invention relates to brown coal drying destructive distillation upgrading device, particularly a kind of reciprocating and turning-back rolling bed brown coal drying destructive distillation upgrading tower.
Background technology
At present, known brown coal drying destructive distillation upgrading device has forms such as vibrations bed, fluidized-bed, net belt type moving-bed and cylinder upgrading.Above-mentioned brown coal drying, still there are the following problems for the destructive distillation upgrading device:
1. the broken problem in the brown coal drying process.
Brown coal are in the heat temperature raising process, the moisture vaporization of coal cinder inside causes that the coal cinder internal pressure raises, when heat-up rate acquires a certain degree, coal cinder internal moisture vaporization rate surpasses water vapour from inside to outside velocity of diffusion in kapillary, interior pressure value is too high, cause coal cinder explosion fragmentation, the coal cinder explosion brings the difficulty of four aspects for the coal course of processing:
1. coal bed ventilation difficulty.The broken fine powder that produces of brown coal explosion worsens the coal column ventilation, and the air-flow bias current is serious, and gas-particle heat transfer efficient is low, the unequal problem of coal seam temperature thereby cause.
2. the dehumidification system security descends.The a large amount of coal dust of the broken generation of brown coal explosion, in drying process, the coal dust of high density is easy to be ignited by static sparking and naked light, leads to disastrous consequence.
3. transport difficulty increases.Make the upgrading product granularity meticulous after the brown coal fragmentation, meticulous coal dust has increased the difficulty of way far away transportation.
4. quality of coke tar descends, tar deep processing difficulty.In retort process, a large amount of tiny coal dusts enter tar, and tar is seriously turned black, and flowability seriously descends, and bring serious problems for the tar purifying and the deep processing at rear portion.
2. the safety issue of coal gas in the brown coal drying process.
The brown coal volatile content is higher, and it is low that volatile matter is separated out temperature, and some brown coal volatile matter is separated out temperature and is low to moderate about 180 ℃.When the drying medium temperature was higher, fine powder was than large coal particles quick heating, and its temperature might surpass volatile matter in advance separate out temperature, the separating out initiation gas safety problem of volatile matter.Therefore, a large amount of fine powders of brown coal explosion generation descend the security of brown coal drying system.
3. the mobility issues of equipment.
Because the brown coal moisture content is very high, dry heat that need be a large amount of, variation has taken place in the matching relationship of brown coal drying and destructive distillation institute heat requirement, and advance rate dry, retort process is also inconsistent, when so brown coal drying system and distillation system are made of one machine, when ature of coal and operational condition changed, the coordination of two processes is difficulty very, and the maneuvering ability of equipment is relatively poor.
Summary of the invention
The present invention is intended to solve known brown coal drying, destructive distillation upgrading device in the problems that solve aspect the gas coal dust explosion, the aspects such as maneuvering ability of the transportation aspect, way far away of upgrading product and equipment exist, and a kind of reciprocating and turning-back rolling bed brown coal drying destructive distillation upgrading tower is provided, solve airborne dust gas explosion simultaneously, gas permeability of coal seam is poor, gas-particle heat transfer efficient is low, raw coal explosion, coal seam temperature uneven and the problem of different sections regulation and control maneuvering ability difference.
The alleged problem of the present invention is solved by following technical scheme:
A kind of reciprocating and turning-back rolling bed brown coal drying destructive distillation upgrading tower, between the drying and carbonization reaction that comprises vertical tower body, surrounds by furnace lining, its top is provided with fuel dropping pipe between described drying and carbonization reaction, be divided into from top to bottom in its space between multilayer drying room and multilayer destructive distillation, be provided with the blast inlet and the air outlet of siccative or destructive distillation agent turnover between each drying room and destructive distillation, the number of plies ratio between drying room and destructive distillation depends on the ature of coal parameter; The reciprocal grate that is in tilted layout all is housed between described drying room and destructive distillation, the vergence direction staggered arrangement of each reciprocal grate from top to bottom, each reciprocal grate is provided with eccentric driving device, be provided with interlayer coal envelope on the interlayer dividing plate of each reciprocal grate afterbody below, interlayer coal envelope below between the bottom destructive distillation connects the quenching jar, and this quenching pot bottom is equipped with the flood dragon of unloading coal.
Brown coal are turned back descending on reciprocal grate, carry out drying, retort process while move.The coal seam is in descending process, and neither boiling is not static again in vertical direction, but constantly rolls in order by the to-and-fro movement of fire grate, exists perfect coal seam to stir loose mechanism automatically.
Compared with prior art, technical superiority of the present invention is embodied in following several respects:
(1) can realize temperature subregion at random, thereby realize the subregion regulation and control on request of upgrading speed.In drying process, the initial stage can be reduced brown coal drying speed by reducing desiccant temperature and flow, finely prevents the coal cinder explosion, has better kept the granularity form of raw coal, makes the transportation of moisture-free coal very convenient; In retort process, can be by regulating different zones dry distillation medium temperature, flow, parameters such as thickness of coal seam, movement velocity accurately adapt to the matching relationship of tar yield and destructive distillation time.
(2) do not seethe with excitement in the coal seam, and coal dust concentration is very low in the kiln, no coal dust explosion hazard; The indoor flying dust concentration of destructive distillation reduces greatly, and the tar ash content reduces significantly, the tar good fluidity.
(3) reciprocal grate angle of inclination can make the coal seam descending smooth and easy, and diagonal movement has prolonged the coal movement path, and space availability ratio improves.
(4) motion of reciprocal grate is stirred the coal seam automatically, and gas permeability of coal seam increases, and the coal seam resistance is less, and rate of drying improves.
(5) the mutual blending of levels coal, the existing transmission of heat by convection mode of heat transfer type has the transmission of heat by contact mode again, also has the radiative transfer mode, and heat transfer rate is higher, and thermograde is less on the vertical direction of coal seam, and the situation of local superheating can not take place.
(6) reciprocal grate can adopt different materials in different zones, and using rate of metal is higher, and cost is lower.
(7) rolling resistance is adopted in the reciprocal grate motion, and power consumption is lower, and working cost is lower.
(8), make moisture-free coal possess the security that stores with transportation fully because the coal seam temperature is even, and flue gas can be drawn by subregion, can realize the depth drying of brown coal fully.
(9) reciprocal grate can be made moudle type, makes adjustable amount farthest satisfy the variation of ature of coal and production load by adjustment module quantity.
(10) reciprocating and turning-back rolling bed coal upgrading tower is vertical layout, and floor space is little.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is an eccentric driving device structural representation of the present invention.
Among the figure: fuel dropping pipe 1; Reciprocal grate 2; Eccentric driving device 3; Blast inlet 4; Interlayer coal envelope 5; Furnace lining 6; Tower body 7; The flood dragon 8 of unloading coal; Quenching jar 9; Air outlet 10; Interlayer dividing plate 11; Between drying and carbonization reaction 12; Worm reduction gear 13; Eccentric wheel 14; Crank connecting link 15; Walking beam 16.
Embodiment
Below in conjunction with drawings and Examples in detail the present invention is described in detail.
Referring to Fig. 1, described reciprocating and turning-back rolling bed its tower body 7 of brown coal drying destructive distillation upgrading tower of present embodiment is vertical structure, tower body 7 is provided with between the drying and carbonization reaction that is surrounded by furnace lining 6 12,12 its tops are provided with fuel dropping pipe 1 between described drying and carbonization reaction, be divided into from top to bottom in its space between multilayer drying room and multilayer destructive distillation, be provided with the blast inlet 4 and the air outlet 10 of siccative or destructive distillation agent turnover between each drying room and destructive distillation, the number of plies ratio between drying room and destructive distillation depends on the ature of coal parameter; The reciprocal grate 2 that is in tilted layout all is housed between described drying room and destructive distillation, the vergence direction staggered arrangement of each reciprocal grate 2 from top to bottom, each reciprocal grate 2 is provided with eccentric driving device 3, be provided with interlayer coal envelope 5 on the interlayer dividing plate 11 of each reciprocal grate 2 afterbodys below, interlayer coal between the bottom destructive distillation seals 5 belows and connects quenching jar 9, and the flood dragon 8 of unloading coal is equipped with in these quenching jar 9 bottoms.
Working process of the present invention is summarized as follows:
Raw coal to be processed is entered in the reciprocating and turning-back rolling bed brown coal drying destructive distillation upgrading tower by fuel dropping pipe 1, drops on the superiors' reciprocal grate 2, and under the promotion of reciprocal grate 2, the downward rolling movement in coal seam.The coal seam falls in the interlayer seal 5 after moving to reciprocal grate 2 afterbodys, form the sealing coal column, the sealing coal column is the fuel dropping pipe of the following one deck reciprocal grate 2 of conduct again, one deck reciprocal grate 2 is carried coal downwards, coal is fallen down to turn back on one deck reciprocal grate 2 by the sealing coal column and is moved downward, by that analogy.Simultaneously, after siccative or destructive distillation agent enter reciprocal grate 2 bottoms by blast inlet 4, in the ventilation hole of reciprocal grate 2, distribute, evenly pass the coal seam afterwards, and carry out thermal exchange based on convection current with the coal seam, make coal seam speed intensification in accordance with regulations, so that orderly drying and dry distillation reactor are carried out in the coal seam, siccative that heat exchange finishes and destructive distillation agent are discharged outside the towers by air outlet 10.Coal carries out several fold return motion afterreactions and finishes, and enters afterwards to adopt in the quenching jar 9 to do wet bonded method quenching, and qualified product is again by flood dragon 8 dischargings of unloading coal.The to-and-fro movement of reciprocal grate 2 is driven by eccentric driving device 3 and realizes.
Referring to Fig. 2, the described eccentric driving device 3 of present embodiment is made of worm reduction gear 13, eccentric wheel 14, crank connecting link 15, walking beam 16, worm reduction gear 13 is loaded on the tower body 7 of 12 outsides between the drying and carbonization reaction, eccentric wheel 14 is housed on its output shaft, this eccentric wheel 14 is connected with walking beam 16 by crank connecting link 15, reciprocal grate 2 is installed on this walking beam 16, and reciprocal grate 2 becomes 12 ° of angles with level.During work, worm reduction gear 13 drives crank connecting links 15 front-rear reciprocation movements by eccentric wheel 14, and crank connecting link 15 drives walking beams 16 front and back and moves horizontally, and is fixed in reciprocal grate 2 on the walking beam 16 with walking beam 16 front-rear reciprocation movements.
Claims (2)
1. reciprocating and turning-back rolling bed brown coal drying destructive distillation upgrading tower, between the drying and carbonization reaction that comprises vertical tower body, surrounds by furnace lining, it is characterized in that, its top is provided with fuel dropping pipe between described drying and carbonization reaction, be divided into from top to bottom in its space between multilayer drying room and multilayer destructive distillation, be provided with the blast inlet and the air outlet of siccative or destructive distillation agent turnover between each drying room and destructive distillation, the number of plies ratio between drying room and destructive distillation depends on the ature of coal parameter; The reciprocal grate that is in tilted layout all is housed between described drying room and destructive distillation, the vergence direction staggered arrangement of each reciprocal grate from top to bottom, each reciprocal grate is provided with eccentric driving device, be provided with interlayer coal envelope on the interlayer dividing plate of each reciprocal grate afterbody below, interlayer coal envelope below between the bottom destructive distillation connects the quenching jar, and this quenching pot bottom is equipped with the flood dragon of unloading coal.
2. reciprocating and turning-back rolling bed brown coal drying destructive distillation upgrading tower according to claim 1, it is characterized in that, described eccentric driving device is made of worm reduction gear, eccentric wheel, crank connecting link, walking beam, worm reduction gear is loaded on the tower body outside between the drying and carbonization reaction, on its output shaft eccentric wheel is housed, this eccentric wheel is connected with walking beam by crank connecting link, and reciprocal grate is installed on this walking beam, and reciprocal grate becomes 12 ° of angles with level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170491 CN101845312B (en) | 2010-05-13 | 2010-05-13 | Lignite drying and carbonization quality-improving tower with reciprocating and turning-back rolling bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010170491 CN101845312B (en) | 2010-05-13 | 2010-05-13 | Lignite drying and carbonization quality-improving tower with reciprocating and turning-back rolling bed |
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| CN101845312A true CN101845312A (en) | 2010-09-29 |
| CN101845312B CN101845312B (en) | 2013-04-17 |
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| CN 201010170491 Expired - Fee Related CN101845312B (en) | 2010-05-13 | 2010-05-13 | Lignite drying and carbonization quality-improving tower with reciprocating and turning-back rolling bed |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199437A (en) * | 2011-04-23 | 2011-09-28 | 华北电力大学（保定） | Large-scale low-order brown coal upgrading tower |
| CN102417823A (en) * | 2011-10-21 | 2012-04-18 | 山东天力干燥股份有限公司 | Drying and dry distillation combined quality improving process and system for low rank coal |
| WO2012055125A1 (en) * | 2010-10-26 | 2012-05-03 | 西峡龙成特种材料有限公司 | Coal material decomposing device by gravity propulsion |
| CN102776006A (en) * | 2012-08-17 | 2012-11-14 | 江西鹏源环保科技发展有限公司 | Device for destructive distillation and drying of biomass |
| CN102796568A (en) * | 2012-09-06 | 2012-11-28 | 刘宗礼 | Device and technology for producing blau-gas and carbon monoxide |
| CN103160291A (en) * | 2011-12-09 | 2013-06-19 | 新疆美特镁业有限公司 | Powdered coal coking device and powdered coal coking method |
| CN103265961A (en) * | 2013-05-31 | 2013-08-28 | 李秋生 | Carbon substance pyrolysis method and carbon substance vibration pyrolysis tower |
| CN103267405A (en) * | 2013-05-31 | 2013-08-28 | 李秋生 | Coal drying device and drying method |
| CN103265963A (en) * | 2013-05-28 | 2013-08-28 | 福建农正鸿发纸业有限责任公司 | Production manufacturing technology and production manufacturing equipment of biomass energy |
| CN103788973A (en) * | 2014-02-26 | 2014-05-14 | 中国科学院地球化学研究所 | Cracking box of continuous charcoal production equipment |
| CN104046371A (en) * | 2013-12-26 | 2014-09-17 | 聂红军 | Technology for retorting brown coal by using fixed bed brown coal drier, and system thereof |
| CN104789244A (en) * | 2015-04-13 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Gas-circulating method for pyrolysis production of anthracite in coal powder rotary furnace |
| CN106415176A (en) * | 2014-06-17 | 2017-02-15 | 韩国技术有限公司 | Apparatus for preventing spontaneous ignition of transferred coal in apparatus for drying coal using reheat steam |
| CN111282958A (en) * | 2020-02-21 | 2020-06-16 | 杭州匠琇科技有限公司 | Garbage deodorization treatment equipment |
| CN112175637A (en) * | 2020-09-28 | 2021-01-05 | 天津壹新环保工程有限公司 | Novel pyrolysis carbonization furnace |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055125A1 (en) * | 2010-10-26 | 2012-05-03 | 西峡龙成特种材料有限公司 | Coal material decomposing device by gravity propulsion |
| CN102199437A (en) * | 2011-04-23 | 2011-09-28 | 华北电力大学（保定） | Large-scale low-order brown coal upgrading tower |
| CN102199437B (en) * | 2011-04-23 | 2014-01-01 | 华北电力大学（保定） | Large-scale low-order brown coal upgrading tower |
| CN102417823A (en) * | 2011-10-21 | 2012-04-18 | 山东天力干燥股份有限公司 | Drying and dry distillation combined quality improving process and system for low rank coal |
| CN103160291A (en) * | 2011-12-09 | 2013-06-19 | 新疆美特镁业有限公司 | Powdered coal coking device and powdered coal coking method |
| CN103160291B (en) * | 2011-12-09 | 2016-06-08 | 新疆美特镁业有限公司 | Fine coal coke making apparatus and make burnt method |
| CN102776006A (en) * | 2012-08-17 | 2012-11-14 | 江西鹏源环保科技发展有限公司 | Device for destructive distillation and drying of biomass |
| CN102796568A (en) * | 2012-09-06 | 2012-11-28 | 刘宗礼 | Device and technology for producing blau-gas and carbon monoxide |
| CN102796568B (en) * | 2012-09-06 | 2015-07-08 | 刘宗礼 | Device and technology for producing blau-gas and carbon monoxide |
| CN103265963B (en) * | 2013-05-28 | 2014-12-24 | 福建农正鸿发纸业有限责任公司 | Production manufacturing technology and production manufacturing equipment of biomass energy |
| CN103265963A (en) * | 2013-05-28 | 2013-08-28 | 福建农正鸿发纸业有限责任公司 | Production manufacturing technology and production manufacturing equipment of biomass energy |
| CN103265961B (en) * | 2013-05-31 | 2015-08-05 | 李秋生 | Carbon species method for pyrolysis and carbon substance vibration pyrolysis tower |
| CN103267405A (en) * | 2013-05-31 | 2013-08-28 | 李秋生 | Coal drying device and drying method |
| CN103267405B (en) * | 2013-05-31 | 2015-10-21 | 李秋生 | Coal drying device and drying means |
| CN103265961A (en) * | 2013-05-31 | 2013-08-28 | 李秋生 | Carbon substance pyrolysis method and carbon substance vibration pyrolysis tower |
| CN104046371A (en) * | 2013-12-26 | 2014-09-17 | 聂红军 | Technology for retorting brown coal by using fixed bed brown coal drier, and system thereof |
| CN104046371B (en) * | 2013-12-26 | 2016-05-25 | 聂红军 | One is utilized fixed bed brown coal drying device destructive distillation brown coal technique and system |
| CN103788973A (en) * | 2014-02-26 | 2014-05-14 | 中国科学院地球化学研究所 | Cracking box of continuous charcoal production equipment |
| CN106415176A (en) * | 2014-06-17 | 2017-02-15 | 韩国技术有限公司 | Apparatus for preventing spontaneous ignition of transferred coal in apparatus for drying coal using reheat steam |
| CN104789244A (en) * | 2015-04-13 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Gas-circulating method for pyrolysis production of anthracite in coal powder rotary furnace |
| CN111282958A (en) * | 2020-02-21 | 2020-06-16 | 杭州匠琇科技有限公司 | Garbage deodorization treatment equipment |
| CN111282958B (en) * | 2020-02-21 | 2020-12-15 | 杭州匠琇科技有限公司 | Garbage deodorization treatment equipment |
| CN112175637A (en) * | 2020-09-28 | 2021-01-05 | 天津壹新环保工程有限公司 | Novel pyrolysis carbonization furnace |
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