CN2913991Y - Coal powder drying apparatus - Google Patents

Coal powder drying apparatus Download PDF

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Publication number
CN2913991Y
CN2913991Y CN 200620115345 CN200620115345U CN2913991Y CN 2913991 Y CN2913991 Y CN 2913991Y CN 200620115345 CN200620115345 CN 200620115345 CN 200620115345 U CN200620115345 U CN 200620115345U CN 2913991 Y CN2913991 Y CN 2913991Y
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CN
China
Prior art keywords
rotating cylinder
pipeline
circular rotating
discharging opening
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200620115345
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Chinese (zh)
Inventor
张天清
谢奇
杨明生
汪利峰
闫海洋
刘勇
康朝阳
高涛欣
杨学范
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALUMINIUM ALLOY Co Ltd OF DENGFENG POWER PLANT GROUP
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ALUMINIUM ALLOY Co Ltd OF DENGFENG POWER PLANT GROUP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to CN 200620115345 priority Critical patent/CN2913991Y/en
Application granted granted Critical
Publication of CN2913991Y publication Critical patent/CN2913991Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a pulverized coal drying device, which comprises a pulverized coal bunker having bottom material outlet communicated with the material inlet of a feeding screw conveyer via pipe; a rotary dryer having a rotary drum with axial line ascending rightwards, a material inlet arranged on the right end of the rotary drum and communicated with the material outlet of the feeding screw conveyer, multiple heating tubes arranged in the rotary drum along axial direction, and a material outlet arranged on the lower sidewall on the left end of the rotary drum; a discharging screw conveyer having material inlet communicated with the material outlet of the rotary drum; and an air circulating pipeline including an exhaust pipe having an inlet communicated with the upper sidewall on the left end of the rotary drum, an explosion-proof device connected with the exhaust pipe, a bag dust collector having an air inlet communicated with the outlet of the exhaust pipe via pipe, and a circulating blower having an air inlet communicated with the air outlet of the bag dust collector via pipe. The utility model has advantages of high pulverized coal drying efficiency, stable product quality, high safety, low energy consumption, and low moisture content in dried pulverized coal.

Description

The coal dust drying equipment
Technical field
The utility model relates to a kind of coal dust drying equipment.
Background technology
Existing coal dust drying equipment adopts traditional power plant coal mill system usually, comprises ball mill, high power Powder discharging fan, cyclone dust collectors, coal bunker and dust-filtering emptier.Drying for wet coal only considers at 80~100 ℃ of hot blasts of ball mill import blowback, do not influencing under the situation that coal dust flows, and there is no strict demand for the definite water content of coal dust.This system will be equipped with the grinding machine and the Powder discharging fan of high energy consumption usually, to the volatile matter height, burning-point is low, when the coal dust that moisture is low and stable is handled, consume higher energy, and unstable product quality, various contingencies such as coal dust explosion take place easily, can't guarantee safety and stability production, therefore can't satisfy the needs of in some metallurgical industry the low coal dust of moisture being produced.
The utility model content
It is low that the purpose of this utility model provides a kind of energy consumption, the efficient height of production low moisture content coal dust, constant product quality, the coal dust drying equipment that security performance is good.
Coal dust drying equipment of the present utility model, comprise Pulverized Coal Bin, the bottom of Pulverized Coal Bin is provided with discharging opening, the discharging opening of Pulverized Coal Bin is by the feeding inlet of pipeline and reinforced conveying worm, the discharging opening of reinforced conveying worm and the feeding inlet that is positioned at the circular rotating cylinder right-hand member of rotary drying machine, the axis of circular rotating cylinder is low right high setting the in a left side, be provided with a plurality of heating tubes along axis direction in the circular rotating cylinder, the side-walls of circular rotating cylinder left end below is provided with discharging opening, the discharging opening of circular rotating cylinder and the feeding inlet of load displacing screw conveyer, the side-walls of circular rotating cylinder left end top links to each other with the entrance point of the blast pipe of gas circulation pipeline, be connected with explosion-protection equipment on the blast pipe, the port of export of blast pipe communicates with the air inlet of sack cleaner by pipeline, the gas outlet of sack cleaner communicates with the air inlet of circulating fan by pipeline, the air outlet of circulating fan communicates by the air inlet of pipeline with evacuated tube and condenser respectively, be connected with the joint door on the evacuated tube, the gas outlet of condenser communicates with the air inlet of demister by pipeline, the gas outlet of demister communicates with the air inlet of steam heater by pipeline, the gas outlet of steam heater communicates by the sidewall of muffler with described circular rotating cylinder right-hand member respectively, be connected with explosion-protection equipment on the muffler, the discharging opening of described load displacing screw conveyer and the feeding inlet that is positioned at the rotating cylinder right-hand member that turns round cooler, the axis of rotating cylinder is low right high setting the in a left side, be connected with bleeder pipe on its sidewall, be connected with the joint door on the bleeder pipe, be provided with a plurality of cooling tubes along axis direction in the rotating cylinder, cooling tube links to each other with cooling water pipe, the side-walls of described rotating cylinder left end is provided with discharging opening, the discharging opening of rotating cylinder and the feeding inlet that sends filling, send in the filling and be filled with nitrogen, sending the discharging opening of irritating links to each other with the cloth-bag type dust collector by pipeline, coal dust is transported in the cloth-bag type dust collector by means of the nitrogen stream that sends the compressor cycle driving of irritating, after reclaiming, the cloth-bag type dust collector enters in the dried coal powder storehouse, the exhaust outlet of cloth-bag type dust collector links to each other with the air inlet of nitrogen reflux pipe, be connected with surge tank and cooler on the nitrogen reflux pipe, the gas outlet of nitrogen reflux pipe links to each other with the compressor inlet that described transmission is irritated.
Coal dust drying equipment of the present utility model, the lower end of wherein said condenser, described demister links to each other with drainage system by U type water seal pipeline, be connected with oxygen concentration tester and pressure and temp hygronom on described gas circulation pipeline and the described bleeder pipe respectively, described circular rotating cylinder adopts buncher to drag.
Coal dust drying equipment of the present utility model, be connected with deduster on the wherein said bleeder pipe, described oxygen concentration tester is installed on the pipeline that connects between demister and the steam heater, the joint door of contacting on the described evacuated tube is the emptying butterfly valve, the axioversion degree of described circular rotating cylinder and described rotating cylinder is 1: 100-3: 100, and be connected with cycloidal-pin wheel on the described pipeline and close the wind unloader.
Coal dust drying equipment of the present utility model, wherein said nitrogen reflux pipe is provided with riot gear, is in series with filter on the connecting line between described sack cleaner and the described circulating fan, and the axioversion degree of described circular rotating cylinder and described rotating cylinder is 2: 100.
Compare with existing coal dust drying equipment, coal dust drying equipment of the present utility model, because its circular rotating cylinder at rotary drying machine, the rotating cylinder of revolution cooler with gas circulation pipeline that two ends of circular rotating cylinder link to each other in charged into and done recycling nitrogen, can prevent that coal dust from blasting, make equipment be able to safe operation, effective energy savings, improve drying efficiency, because Processes and apparatus is reasonable in design, so it is pollution-free that coal dust drying equipment of the present utility model has, energy consumption is low, the efficient height of production low moisture content coal dust, constant product quality, the characteristics that security performance is good.
Be described in further detail below in conjunction with the specific embodiment of accompanying drawing coal dust drying equipment of the present utility model.
Description of drawings
Fig. 1 is the fundamental diagram of coal dust drying equipment of the present utility model.
The specific embodiment
As shown in Figure 1, coal dust drying equipment of the present utility model, comprise Pulverized Coal Bin 19, the bottom of Pulverized Coal Bin 19 is provided with discharging opening, the discharging opening of Pulverized Coal Bin 19 is by the feeding inlet of pipeline 20 with reinforced conveying worm 2, the discharging opening of reinforced conveying worm 2 and the feeding inlet that is positioned at circular rotating cylinder 21 right-hand members of rotary drying machine 3, the axis of circular rotating cylinder 21 is low right high setting the in a left side, circular rotating cylinder 21 adopts buncher to drag, the axioversion degree of circular rotating cylinder 21 is 1: 100 or 2: 100 or 3: 100, be provided with a plurality of heating tubes 27 along axis direction in the circular rotating cylinder 21, the side-walls of circular rotating cylinder 21 left ends below is provided with discharging opening, the discharging opening of circular rotating cylinder 21 and the feeding inlet of load displacing screw conveyer 11, the side-walls of circular rotating cylinder 21 left ends top links to each other with the entrance point of the blast pipe 22 of gas circulation pipeline 26, be connected with explosion-protection equipment 23 on the blast pipe 22, the port of export of blast pipe 22 communicates by the air inlet of pipeline with sack cleaner 4, the gas outlet of sack cleaner 4 communicates by the air inlet of pipeline with circulating fan 5, be in series with filter 35 on the connecting line between sack cleaner 4 and the circulating fan 5, the air outlet of circulating fan 5 communicates by the air inlet of pipeline with evacuated tube 24 and condenser 7 respectively, be connected with emptying butterfly valve 6 on the evacuated tube 24, the gas outlet of condenser 7 communicates by the air inlet of pipeline with demister 8, the gas outlet of demister 8 communicates by the air inlet of pipeline with steam heater 9, the gas outlet of steam heater 9 communicates by the sidewall of muffler 28 with circular rotating cylinder 21 right-hand members respectively, be connected with explosion-protection equipment 23 on the muffler 28, the discharging opening of load displacing screw conveyer 11 and the feeding inlet that is positioned at rotating cylinder 31 right-hand members that turn round cooler 12, the axis of rotating cylinder 31 is low right high setting the in a left side, the axioversion degree of rotating cylinder 31 is 1: 100 or 2: 100 or 3: 100, be connected with bleeder pipe 34 on its top sidewall, be connected with joint door (not drawing among the figure) on the bleeder pipe 34, be provided with a plurality of cooling tubes 33 along axis direction in the rotating cylinder 31, cooling tube 33 links to each other with cooling water pipe (not drawing among the figure), the side-walls of rotating cylinder 31 left ends below is provided with discharging opening, the discharging opening of rotating cylinder 31 and the feeding inlet that sends filling 14, send to irritate in 14 and be filled with nitrogen, the discharging opening that sends filling 14 links to each other with cloth-bag type dust collector 15 by pipeline, coal dust is transported in the cloth-bag type dust collector 15 by means of the nitrogen stream that compressor 13 circulations that send filling 14 drive, after reclaiming, cloth-bag type dust collector 15 enters in the dried coal powder storehouse 32, the exhaust outlet of cloth-bag type dust collector 15 links to each other with the air inlet of nitrogen reflux pipe 36, be connected with surge tank 16 and cooler 17 on the nitrogen reflux pipe 36, the gas outlet of nitrogen reflux pipe 36 links to each other with compressor 13 air inlets of described transmission filling 14, is connected with oxygen concentration tester (not drawing among the figure) and pressure and temp hygronom 10 on gas circulation pipeline 26 and the bleeder pipe 34 respectively.
The two ends of circular rotating cylinder 21 and rotating cylinder 31 are respectively equipped with blind flange, are connected with deduster 18 on the bleeder pipe 34, and oxygen concentration tester (not drawing among the figure) is installed on the pipeline that connects between demister 8 and the steam heater 9.On pipeline 20, be connected with cycloidal-pin wheel and close wind unloader 1.
Nitrogen reflux pipe 36 is provided with riot gear 29, and the tapering of the conically shaped of circular rotating cylinder 21 and rotating cylinder 31 is 2: 100.
Above-mentioned cycloidal-pin wheel closes wind unloader 1 and is provided by the production of Yongtai, Jinan star environmental protection equipment Co., Ltd, and its unit type is YJD-Z-C; Reinforced conveying worm 2 is produced by the high-new culminant star machine-building in Jinan Co., Ltd and is provided, and its unit type is LSS-300; Rotary drying machine 3 is produced by the big chemical industry equipment Manufacturing Co., Ltd in east, Tai'an and is provided, and its design pressure is tube side 0.7MPa, and operating pressure is tube side 0.6MPa, and design temperature is 160 ℃ of tube sides, circular rotating cylinder 21 internal diameter 1600mm, 400 square metres of heat exchange areas; Sack cleaner 4 is produced by Tianli Drying Equipment Co., Ltd., Shandong and is provided, and its unit type is DMC48-II; Circulating fan 5 is produced by Ji'nan Blower Factory and is provided, and its unit type is 9-19; Condenser 7 is produced by Chengdu bull wheel thermal hardware manufactory and is provided, and its unit type is LD-III; Demister 8 is produced by Chengdu bull wheel thermal hardware manufactory and is provided, and its unit type is CHS-19; Steam heater 9 is produced by Chengdu bull wheel thermal hardware manufactory and is provided, and its unit type is SRZ5*5D; Load displacing screw conveyer 11 is produced by the high-new culminant star machine-building in Jinan Co., Ltd and is provided, and its unit type is LSS-300; Revolution cooler 12 is produced by the big chemical industry equipment Manufacturing Co., Ltd in east, Tai'an and is provided, and its design pressure is tube side 0.4MPa, and operating pressure is tube side 0.3MPa, and design temperature is 40 ℃ of tube sides, rotating cylinder 31 internal diameter 1400mm, 100 square metres of heat exchange areas; Compressor 13 is produced by Nanjing Compressor Co and is provided, and its unit type is the VW-6/8 type; Sending filling 14 is provided by the production of Zhejiang Hang Te container Co., Ltd, and its (vessel) class is 1LS; Cloth-bag type dust collector 15 is produced by environmental protection equipment factory in continent in the Fuyang, Zhejiang city and is provided, and its unit type is MFL-16; Surge tank 16 is produced by subsidiary engine subsidiary factory of Nanjing Compressors Factory and is provided, and its (vessel) class is D1; Cooler 17 by Nanjing with the wind Pai Erni air cleaning equipment Co., Ltd produce and to provide, its unit type is AC6W-1.3-N2; Deduster 18 is produced by Tianli Drying Equipment Co., Ltd., Shandong and is provided.
As shown in Figure 1, coal dust drying equipment of the present utility model in use, it comprises the steps:
(1) will need dry coal dust to be placed in the Pulverized Coal Bin 19, the moisture of coal dust is less than 15% or less than 12% or less than 10%, and the particle diameter of coal dust is less than 1.5mm or less than 1.2mm or less than 1.0mm, and the temperature in the Pulverized Coal Bin 19 is lower than 40 ℃; And in the circular rotating cylinder 21 of rotary drying machine 3, charge into the nitrogen of 0.05MPa or 0.06MPa or 0.08MPa or 0.10MPa or 0.11MPa or 0.12MPa or 0.13MPa or 0.15MPa, the concentration of volume percent that charges into nitrogen is more than 99.5%, open the emptying butterfly valve 6 of polyphone on the evacuated tube 24 on the gas circulation pipeline 26 that links to each other with two ends of circular rotating cylinder 21 simultaneously, discharge original gas in the circular rotating cylinder 21, and by being installed in concentration of oxygen in the oxygen concentration tester observation gas circulation pipeline 26 on the gas circulation pipeline 26, charge into nitrogen in the rotating cylinder 31 to revolution cooler 12 simultaneously and open joint door on the bleeder pipe 34 of revolution cooler 12, emit original gases in the rotating cylinder 31;
(2) when the circular rotating cylinder 21 of rotary drying machine 3, concentration of oxygen is lower than 12% or 14% or at 16% o'clock in revolution rotating cylinder 31 of cooler 12 and the gas circulation line 26, open the circulating fan 5 on the gas circulation pipeline 26, and adjustment turns down the joint door on emptying butterfly valve 6 and the bleeder pipe 34, in circular rotating cylinder 21 and rotating cylinder 31, charge into simultaneously the nitrogen of 0.03MPa or 0.04MPa or 0.05MPa or 0.06MPa or 0.07MPa or 0.08MPa or 0.09MPa or 0.1MPa, the concentration of volume percent that charges into nitrogen is more than 99.5%, continue to discharge original gas in circular rotating cylinder 21 and the rotating cylinder 31, when circular rotating cylinder 21, after oxygen content in rotating cylinder 31 and the gas circulation line 26 is lower than 8% or 10%, close the joint door on the bleeder pipe 34 of emptying butterfly valve 6 and revolution cooler 12 again, and stop in circular rotating cylinder 21 and rotating cylinder 31, charging into nitrogen;
(3) start rotary drying machine 3 and revolution cooler 12, make the circular rotating cylinder 21 of rotary drying machine 3 and the rotating cylinder 31 of revolution cooler 12 rotate, and be the water vapour of 110 ℃ or 120 ℃ or 130 ℃ or 140 ℃ or 150 ℃ by heating tube 27 delivery temperatures of steam pipework in circular rotating cylinder 21, carry cooling water by the cooling tube of cooling line in rotating cylinder 31, utilize the reinforced conveying worm 2 that communicates with the discharging opening of Pulverized Coal Bin bottom that the coal dust in the Pulverized Coal Bin 19 is transported to the interior end of circular rotating cylinder 21 continuously from the charging aperture of rotary drying machine 3 then, the coal dust that enters in the circular rotating cylinder 21 can simultaneously roll, one side is moved towards the other end in the circular rotating cylinder 21, the contained moisture of coal dust can be converted into steam in this course under the heat effect of heating tube 27, and in the blast pipe 22 of the circulating fan 5 suction gas circulation pipelines of having been opened on the gas circulation pipeline 26 26, the gas that contains steam then enters and carries out dedusting in the sack cleaner 4, pass through circulating fan 5 again, the gas that contains steam enters condenser 7 more successively, demister 8 and steam heater 9, through condenser 7, the condensation of demister 8, condensed water is discharged in demist, be heated by steam device 9 heat treated again and become dry unsaturation gas, gas can be got back in the circular rotating cylinder 21 of rotary drying machine 3 by muffler 28 then;
(4) dried moisture less than 3% or enter load displacing screw conveyer 11 by the coal dust discharging opening of the other ends in the circular rotating cylinder 21 less than 2% coal dust, the coal dust temperature of being come out by the coal dust discharging opening of circular rotating cylinder 21 is 90 ℃-110 ℃, and the coal dust that dried is transported in the rotating cylinder 31 of revolution cooler 12 by load displacing screw conveyer 11, after coal dust cools off in rotating cylinder 31, discharge by rotating cylinder 31 enters transmission filling 14, send to irritate in 14 and be filled with nitrogen, the discharging opening that sends filling 14 links to each other with cloth-bag type dust collector 15 by pipeline, coal dust is transported in the cloth-bag type dust collector 15 by means of the nitrogen stream that is driven by compressor 13 circulations that send filling 14, enters in the dried coal powder storehouse 32 after cloth-bag type dust collector 15 reclaims; Adjust the rotating speed of circular rotating cylinder 21, can regulate and control the moisture and the temperature of the coal dust that the coal dust discharging opening by circular rotating cylinder 21 comes out;
(5) when the circular rotating cylinder 21 of rotary drying machine 3, concentration of oxygen is through being higher than at 16% o'clock after the operation after a while in the rotating cylinder 31 of revolution cooler 12 and the gas circulation line 26, open the joint door on the bleeder pipe 34 of emptying butterfly valve 6 and revolution cooler 12, in circular rotating cylinder 21 and rotating cylinder 31, charge into simultaneously the nitrogen of 0.03MPa or 0.04MPa or 0.05MPa or 0.06MPa or 0.07MPa or 0.08MPa or 0.09MPa or 0.1MPa, the concentration of volume percent that charges into nitrogen is more than 99.5%, discharge original gas in circular rotating cylinder 21 and the rotating cylinder 31, when circular rotating cylinder 21, after oxygen content in rotating cylinder 31 and the gas circulation line 26 is lower than 8% or 10%, close the joint door on emptying butterfly valve 6 and the bleeder pipe 34 again, and stop in circular rotating cylinder 21 and rotating cylinder 31, charging into nitrogen, continue according to described step (3) and described step (4) operation.
Cloth-bag type dust collector 15 in sack cleaner 4 in the above-mentioned steps (3) and the described step (4) adopt respectively concentration of volume percent more than 99.5%, pressure is that dirt is taken off in the nitrogen blowback of 0.3MPa-0.5MPa.
When starting rotary drying machine 3 and revolution cooler 12 first; perhaps when rotary drying machine 3 and revolution cooler surpass 7 days 12 downtimes; when perhaps overhauling rotary drying machine 3 and revolution cooler 12 with the circular rotating cylinder 21 of rotary drying machine 3; after nitrogen in the rotating cylinder 31 of revolution cooler 12 is emitted; when starting rotary drying machine 3 and revolution cooler 12 first; elder generation is to the circular rotating cylinder 21 of rotary drying machine 3; input kaolin in the rotating cylinder 31 of revolution cooler 12; carry out false material test run, after false material test run is normal again to the circular rotating cylinder 21 of rotary drying machine 3; input coal dust in the rotating cylinder 31 of revolution cooler 12.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design concept prerequisite; common engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Claims (4)

1. coal dust drying equipment, it is characterized in that comprising Pulverized Coal Bin (19), the bottom of Pulverized Coal Bin (19) is provided with discharging opening, the discharging opening of Pulverized Coal Bin (19) is by the feeding inlet of pipeline (20) with reinforced conveying worm (2), the discharging opening of reinforced conveying worm (2) and the feeding inlet that is positioned at circular rotating cylinder (21) right-hand member of rotary drying machine (3), the axis of circular rotating cylinder (21) is low right high setting the in a left side, be provided with a plurality of heating tubes (27) along axis direction in the circular rotating cylinder (21), the side-walls of circular rotating cylinder (21) left end below is provided with discharging opening, the discharging opening of circular rotating cylinder (21) and the feeding inlet of load displacing screw conveyer (11), the side-walls of circular rotating cylinder (21) left end top links to each other with the entrance point of the blast pipe (22) of gas circulation pipeline (26), be connected with explosion-protection equipment (23) on the blast pipe (22), the port of export of blast pipe (22) communicates by the air inlet of pipeline with sack cleaner (4), the gas outlet of sack cleaner (4) communicates by the air inlet of pipeline with circulating fan (5), the air outlet of circulating fan (5) communicates by the air inlet of pipeline with evacuated tube (24) and condenser (7) respectively, be connected with the joint door on the evacuated tube (24), the gas outlet of condenser (7) communicates by the air inlet of pipeline with demister (8), the gas outlet of demister (8) communicates by the air inlet of pipeline with steam heater (9), the gas outlet of steam heater (9) communicates by the sidewall of muffler (28) with described circular rotating cylinder (21) right-hand member respectively, be connected with explosion-protection equipment (23) on the muffler (28), the discharging opening of described load displacing screw conveyer (11) and the feeding inlet that is positioned at rotating cylinder (31) right-hand member that turns round cooler (12), the axis of rotating cylinder (31) is low right high setting the in a left side, be connected with bleeder pipe (34) on its sidewall, be connected with the joint door on the bleeder pipe (34), be provided with a plurality of cooling tubes (33) along axis direction in the rotating cylinder (31), cooling tube (33) links to each other with cooling water pipe, the side-walls of described rotating cylinder (31) left end below is provided with discharging opening, the discharging opening of rotating cylinder (31) and the feeding inlet that sends filling (14), send to irritate in (14) and be filled with nitrogen, sending the discharging opening of irritating (14) links to each other with cloth-bag type dust collector (15) by pipeline, coal dust is transported in the cloth-bag type dust collector (15) by means of the nitrogen stream that sends compressor (13) the circulation driving of irritating (14), after reclaiming, cloth-bag type dust collector (15) enters in the dried coal powder storehouse (32), the exhaust outlet of cloth-bag type dust collector (15) links to each other with the air inlet of nitrogen reflux pipe (36), be connected with surge tank (16) and cooler (17) on the nitrogen reflux pipe (36), the gas outlet of nitrogen reflux pipe (36) links to each other with compressor (13) air inlet that (14) are irritated in described transmission.
2. a kind of coal dust drying equipment according to claim 1, the lower end that it is characterized in that described condenser (7), described demister (8) links to each other with drainage system by U type water seal pipeline, be connected with oxygen concentration tester and pressure and temp hygronom (10) on described gas circulation pipeline (26) and the described bleeder pipe (34) respectively, described circular rotating cylinder (21) adopts buncher to drag.
3. a kind of coal dust drying equipment according to claim 2, it is characterized in that being connected with on the described bleeder pipe (34) deduster (18), described oxygen concentration tester is installed on the pipeline that connects between demister (8) and the steam heater (9), the joint door that described evacuated tube (24) goes up polyphone is emptying butterfly valve (6), the axioversion degree of described circular rotating cylinder (21) and described rotating cylinder (31) is 1: 100-3: 100, and be connected with cycloidal-pin wheel on the described pipeline (20) and close wind unloader (1).
4. a kind of coal dust drying equipment according to claim 3, it is characterized in that described nitrogen reflux pipe (36) is provided with riot gear (29), be in series with filter (35) on the connecting line between described sack cleaner (4) and the described circulating fan (5), the axioversion degree of described circular rotating cylinder (21) and described rotating cylinder (31) is 2: 100.
CN 200620115345 2006-05-19 2006-05-19 Coal powder drying apparatus Expired - Fee Related CN2913991Y (en)

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Application Number Priority Date Filing Date Title
CN 200620115345 CN2913991Y (en) 2006-05-19 2006-05-19 Coal powder drying apparatus

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Application Number Priority Date Filing Date Title
CN 200620115345 CN2913991Y (en) 2006-05-19 2006-05-19 Coal powder drying apparatus

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100422677C (en) * 2006-05-19 2008-10-01 登封电厂集团铝合金有限公司 Pulverized coal drying process and apparatus
CN102071628A (en) * 2010-08-06 2011-05-25 无锡华中科技有限公司 Regeneration discharge box
CN102564067A (en) * 2010-12-10 2012-07-11 天华化工机械及自动化研究设计院 Rotary cylindrical drier catalyst drying method and equipment
CN102918345A (en) * 2009-10-01 2013-02-06 罗斯科技公司 Coal fine drying method and system
CN104815838A (en) * 2015-05-25 2015-08-05 山东百川同创能源有限公司 Biomass solid waste and hazardous waste pre-treatment system
CN104889139A (en) * 2015-05-25 2015-09-09 山东百川同创能源有限公司 Pre-treatment technology for biomass solid waste and dangerous waste
CN111729480A (en) * 2020-07-07 2020-10-02 大峘集团有限公司 Self-circulation hot air exhaust gas dehumidifying device of coal powder preparation system and working method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100422677C (en) * 2006-05-19 2008-10-01 登封电厂集团铝合金有限公司 Pulverized coal drying process and apparatus
CN102918345A (en) * 2009-10-01 2013-02-06 罗斯科技公司 Coal fine drying method and system
CN102071628A (en) * 2010-08-06 2011-05-25 无锡华中科技有限公司 Regeneration discharge box
CN102564067A (en) * 2010-12-10 2012-07-11 天华化工机械及自动化研究设计院 Rotary cylindrical drier catalyst drying method and equipment
CN104815838A (en) * 2015-05-25 2015-08-05 山东百川同创能源有限公司 Biomass solid waste and hazardous waste pre-treatment system
CN104889139A (en) * 2015-05-25 2015-09-09 山东百川同创能源有限公司 Pre-treatment technology for biomass solid waste and dangerous waste
CN111729480A (en) * 2020-07-07 2020-10-02 大峘集团有限公司 Self-circulation hot air exhaust gas dehumidifying device of coal powder preparation system and working method thereof

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Granted publication date: 20070620