CN102353693A - Experimental installation for drying characteristic of upgrading low rank coal - Google Patents
Experimental installation for drying characteristic of upgrading low rank coal Download PDFInfo
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- CN102353693A CN102353693A CN2011102072551A CN201110207255A CN102353693A CN 102353693 A CN102353693 A CN 102353693A CN 2011102072551 A CN2011102072551 A CN 2011102072551A CN 201110207255 A CN201110207255 A CN 201110207255A CN 102353693 A CN102353693 A CN 102353693A
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Abstract
The invention discloses an experimental installation with a simple structure and convenient operation for determining parameters of hot air flow, temperature, coal particle size and staying time of raw coal in a dryer of different low rank coal drying systems with different water contents. A hot-blast stove of the installation generates hot flue gas, which is mixed with discharge smoke guided back by a cycle flue gas pipeline and enters into a vertical dryer after temperature adjusting and flow adjusting by a cold air regulating valve. Wet coal in the vertical dryer falls from top to bottom according to a controlled time and exchanges heat with the hot flue gas entering the vertical dryer through convection to remove water. Dried coal is cooled by cooling air in a dry coal cooling device to a required temperature and enters into a tar coating apparatus for tar coating. According to microcomputer test, controlling of the wet coal staying time, flue gas flux and temperature in the dryer by the system control, observing components of exhaust smoke by a test instrument and repeat tests on different raw coals, the conditions of wet coal staying time hot air flow and temperature for producing dried, unsusceptible to spontaneous combustion and hydrophobic upgrading coal are finally found out.
Description
Technical field
The present invention relates to the experimental provision field of low-order coal drying and upgrading technological design researchs such as a kind of brown coal and subbituminous coal.
Background technology
The most of shallow in burial of low-order coal such as brown coal and subbituminous coal, the coal seam is thick, cost of winning is low, and active high, and sulfur-bearing is low, is the important energy source and the industrial chemicals of China.Low-order coal water cut height causes thermal value to reduce and cost of transportation height, has influenced its economic worth and has utilized efficiency.Low-order coal has greatly, and moisture is difficult to reject with the dehydration of traditional mechanical such as press filtration and centrifuge dripping in existing in the micropore capillary structure of coal.Low-order coal hot blast or flue gas drying are the effective ways of its upgrading, but current drying technology several key problems is still unresolved, directly affects applying of this technology, mainly comprises: the 1. moisture-free coal problem that absorbs water again; 2. the airborne dust problem in the moisture-free coal process; 3. moisture-free coal stores and transports than the easier spontaneous combustion problem of raw coal.Therefore the exploitation of low-order coal drying and upgrading technology is to the comprehensive utilization that enlarges low-order coal, the market competitiveness that improves low-order coal.
For shortening the development cycle of novel low-order coal drying and upgrading system; Be convenient to conduct a research to low-order coal drying and upgrading system core technical matters; And for the manufacturing of novel low-order coal drying and upgrading system provides technical parameter and lectotype selection foundation, the experimental provision of active demand employing low-order coal drying and upgrading new technology.
Summary of the invention
The present invention seeks to propose a kind of simple in structure, easy to operate; Can be applied to low-order coal drying and upgrading system core technical matters and conduct a research, and hot-air system flow, temperature, coal particle size and raw coal residence time in dryer isoparametric upgrading low-order coal drying property experimental provision are provided for designing coal drying system.
To achieve these goals, technical scheme of the present invention is following: a kind of upgrading low-order coal drying property experimental provision comprises hot blast feeding system, wet coal conveying drying system, dry coal cooling treatment system and microcomputer testing and control system;
The air supply system include cold air pipe, hot air ducts, blowers, stove, stove flue gas outlet, gas pipes, cold air regulating valves, the upper hot air pipe, the lower hot air ducts, adjusting air valve, vertical Dryer, exhaust pipes, Fan, chimneys and flue pipes circulation; air supply system with dry coal cold air pipe cooling device with a hot air blower inlet duct confluence connected to the blower outlet is connected with stove, stove flue gas outlet pipe connected to the flue pipe with cold air regulating valves, flue pipe and the upper and lower hot air duct hot air tube connected to the upper hot air pipe has tiaofeng valves, the upper hot air pipes and lower hot air ducts in different locations connected with the vertical dryer, vertical dryer and exhaust pipes connected to the exhaust pipe is connected with the induced draft fan, induced draft fan and chimney connected to the chimney flue pipe respectively, and circulation and atmospheric environment connected to the circulating gas stove flue gas duct and connected to the inlet;
Described wet coal carries drying system to comprise hoister, feed pipe, tower drier and discharge gate; Hoister links to each other with feed pipe, and feed pipe links to each other with tower drier, and the tower drier discharge gate links to each other with the dry coal cooling device;
Described dry coal cooling treatment system comprises dry coal cooling device, cooling air inlet, warm-air pipe, tar coating unit and tar jet atomization device; Described dry coal cooling device links to each other with warm-air pipe with cooling air inlet respectively; Described tar coating unit is provided with tar jet atomization device;
Described microcomputer testing and control system link to each other with fan blower, heat generator, cold wind control valve, adjusting valve door, tower drier, induced draft fan, hoister, dry coal cooling device, tar coating unit and tar jet atomization device with operation circuit through signal.
Tower drier of the present invention is equipped with the detection ladder outward, and tower drier links to each other with the detection ladder.
Microcomputer testing of the present invention and control system also link to each other with testing tool with operation circuit through signal.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention adopts the novel vertical dryer can be applied to improve dry energy efficient of coal and drying efficiency experimental study.
2, the present invention has adopted the flue gas recirculation heated-air drying, can be applied to reduce low temperature pyrogenation degree experimental study in the coal dry run.
3, the present invention adopts the dry coal cooling to apply the tar treatment technology, can be applied to improve the performance test research that the coal drying absorbs water again.
4, the present invention adopts the operation of microcomputer testing and control system regulating system, makes that the whole experiment device automaticity is high, experimental precision is high and easy to operate.
5, because the present invention is simple in structure, easy to operate, and adopt microcomputer testing and control system to control automatically, can hot-air system flow, temperature, coal particle size and raw coal parameter such as residence time in dryer be provided for the design coal drying system.
Description of drawings
2 in the total accompanying drawing of the present invention, wherein:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that A-A of the present invention cuts the structural representation of watching partial devices to the right open.
Among the figure, 1; Fan blower, 2; Cold air pipe; 3; Blower inlet, 4; Blower export, 5; Heat generator; 6; Exhanst gas outlet, 7; Fume pipe (near the heat generator pipeline section), 8; The cold wind control valve; 9; The top warm-air pipe, 10; Bottom warm-air pipe (near the dryer pipeline section), 11; The adjusting valve door; 12; Tower drier; 13; Smoke discharging pipe, 14; Induced draft fan, 15; Chimney; 16; The circulating flue gas pipeline; 17; The flue gas recirculation inlet, 18; Hoister, 19; Feed pipe; 20; Discharge gate; 21; The dry coal cooling device, 22; Cooling air inlet, 23; Warm-air pipe; 24; The tar coating unit; 25; Tar jet atomization device, 26; Microcomputer testing and control system, 27; Detect ladder.
Specific embodiments
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As depicted in figs. 1 and 2, described upgrading low-order coal drying property experimental provision comprises hot blast feeding system, wet coal conveying drying system, dry coal cooling treatment system and microcomputer testing and control system.
Described hot blast feeding system comprises hot blast feeding system cold air pipe 2, warm-air pipe 23, fan blower 1, heat generator 5, exhanst gas outlet 6, fume pipe 7, cold wind control valve 8, top warm-air pipe 9, bottom warm-air pipe 10, adjusting valve door 11, tower drier 12, smoke discharging pipe 13, induced draft fan 14, chimney 15 and circulating flue gas pipeline 16.Cold air pipe 2 converges the back with dry coal cooling device 21 warm-air pipes 23 and links to each other with blower inlet 3; Blower export 4 links to each other with hot-blast stove 5; Exhanst gas outlet 6 links to each other with fume pipe 7; Fume pipe 7 is provided with cold wind control valve 8; Fume pipe 7 links to each other with bottom warm-air pipe 10 with top warm-air pipe 9; Top warm-air pipe 9 is provided with adjusting valve door 11; Top warm-air pipe 9 links to each other with tower drier 12 at diverse location with bottom warm-air pipe 10; Tower drier 12 links to each other with smoke discharging pipe 13; Smoke discharging pipe 13 links to each other with air-introduced machine 14; Air-introduced machine 14 links to each other with chimney 15; Chimney 15 links to each other with atmospheric environment with circulating flue gas pipeline 16 respectively, and circulating flue gas pipeline 16 links to each other with hot-blast stove fume loop head 17.
Described wet coal carries drying system to comprise hoister 18, feed pipe 19, tower drier 12 and discharge gate 20.Hoister 18 links to each other with feed pipe 19, and feed pipe 19 links to each other with tower drier 12, and tower drier 12 discharge gates 20 link to each other with dry coal cooling device 21.
Described dry coal cooling treatment system comprises dry coal cooling device 21, cooling air inlet 22, warm-air pipe 23, tar coating unit 24 and tar jet atomization device 25.The dry coal cooling device 21 of dry coal cooling treatment system links to each other with cooling air inlet 22, and dry coal cooling device 21 links to each other with warm-air pipe 23.The tar coating unit 24 of dry coal cooling treatment system is provided with tar jet atomization device 25.
Microcomputer testing and control system 26 link to each other with fan blower 1, heat generator 5, cold wind control valve 8, adjusting valve door 11, tower drier 12, induced draft fan 14, hoister 18, dry coal cooling device 21, tar coating unit 24 and tar jet atomization device 25 with operation circuit through signal.
Tower drier of the present invention is equipped with the detection ladder outward.Tower drier 12 links to each other with detection ladder 27.Microcomputer testing of the present invention and control system 26 also link to each other with some testing tools with operation circuit through signal.
Principle of work of the present invention is following: during work, after cold air and dry coal cooling device generation hot-air converge, get into heat generator 5 through fan blower 1.Heat generator 5 produces hot flue gas, simultaneously with the smoke evacuation of drawing back by circulating flue gas pipeline 16 in blending, get into fume pipe 7 then.Utilize the temperature and the flow of the hot flue gas of cold wind control valve 8 adjustings that is provided with on the fume pipe 7, divide two-way to get into tower drier 12 then.Wet coal is promoted to tower drier 12 tops by hoister 18; Get into tower drier 12 by feed pipe 19; Wet coal is fallen according to the control time by control system 26 controls from top to bottom; Wet coal and top warm-air pipe 9 carry out convection heat transfer with the hot flue gas that bottom warm-air pipe 10 gets into tower drier, and are removed moisture and drying.Dried coal is discharged by tower drier discharge gate 20, gets into dry coal cooling device 25 again and is cooled to require temperature by cooling air, then, gets into tar coating unit 24 coating tars.After the cold air of dry coal cooling device 25 coolings is heated, introduce in the fan blower 1.The present invention in the course of the work; Through wet the coal residence time, flue gas flow and temperature in microcomputer testing and the control system control dryer; The composition of application testing Instrument observation smoke evacuation; To different raw coal; Repetition test; Finally find out and produce drying, be difficult for the wet coal residence time, hot air flow and the temperature conditions of spontaneous combustion and hydrophobic upgraded coal, for upgrading low-order coal drying system provides design parameter.
Claims (3)
1. a upgrading low-order coal drying property experimental provision is characterized in that: comprise hot blast feeding system, wet coal conveying drying system, dry coal cooling treatment system and microcomputer testing and control system (26);
The air supply system comprises a cold air duct (2), the hot air pipe (23), the blower (1), stove (5), gas outlet (6), the flue gas pipe (7), cold air regulating valve ( 8), the upper hot air tube (9), the lower air duct (10), adjusting air valve (11), vertical dryer (12), exhaust pipe (13), induced draft fan (14), chimney ( 15) and circulating flue gas duct (16); cold air supply system tube (2) and the dry coal cooling means (21) of the air pipe (23) confluent with the blower inlet (3) is connected to the blower outlet (4 ) and the hot air furnace (5) is connected, stove (5) of the gas outlet (6) and the flue gas pipe (7) connected to the gas pipe (7) is provided with a cold air regulating valve (8), gas tubes ( 7) and the upper air tube (9) and lower air duct (10) connected to the upper hot air tube (9) is provided with adjusting air valve (11), the upper hot air tube (9) and lower hot air pipe ( 10) in a different position and vertical dryer (12) connected to the vertical dryer (12) and the exhaust pipe (13) connected to the exhaust pipe (13) and the fan (14) connected to the fan ( 14) and chimney (15) connected to the chimney (15), respectively, the circulation flue gas duct (16) and connected to the atmospheric environment, the cycle gas pipe (16) and the hot air furnace (5) of the flue gas inlet (17) is connected;
Described wet coal carries drying system to comprise hoister (18), feed pipe (19), tower drier (12) and discharge gate (20); Hoister (18) links to each other with feed pipe (19), and feed pipe (19) links to each other with tower drier (12), and the discharge gate (20) of tower drier (12) links to each other with dry coal cooling device (21);
Described dry coal cooling treatment system comprises dry coal cooling device (21), cooling air inlet (22), warm-air pipe (23), tar coating unit (24) and tar jet atomization device (25); Described dry coal cooling device (21) links to each other with warm-air pipe (23) with cooling air inlet (22) respectively; Described tar coating unit (24) is provided with tar jet atomization device (25);
Described microcomputer testing and control system (26) link to each other with fan blower (1), heat generator (5), cold wind control valve (8), adjusting valve door (11), tower drier (12), induced draft fan (14), hoister (18), dry coal cooling device (21), tar coating unit (24) and tar jet atomization device (25) with operation circuit through signal.
2. a kind of upgrading low-order coal drying property experimental provision according to claim 1 is characterized in that: outer being equipped with of described tower drier (12) detected ladder (27), and tower drier (12) links to each other with detection ladder (27).
3. a kind of upgrading low-order coal drying property experimental provision according to claim 1 is characterized in that: described microcomputer testing and control system (26) also link to each other with testing tool with operation circuit through signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110207255 CN102353693B (en) | 2011-07-22 | 2011-07-22 | Experimental installation for drying characteristic of upgrading low rank coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110207255 CN102353693B (en) | 2011-07-22 | 2011-07-22 | Experimental installation for drying characteristic of upgrading low rank coal |
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| CN102353693A true CN102353693A (en) | 2012-02-15 |
| CN102353693B CN102353693B (en) | 2013-04-24 |
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| CN 201110207255 Expired - Fee Related CN102353693B (en) | 2011-07-22 | 2011-07-22 | Experimental installation for drying characteristic of upgrading low rank coal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941905A (en) * | 2015-06-30 | 2015-09-30 | 中国矿业大学 | Experimental system and method for vibration grading, drying and quality improving of low-rank coal |
| CN113019667A (en) * | 2021-01-29 | 2021-06-25 | 华电电力科学研究院有限公司 | System and method for adjusting flue gas volume at coal mill inlet of fan mill pulverizing system |
| CN113932580A (en) * | 2020-06-29 | 2022-01-14 | 红河锦东化工股份有限公司 | Spraying, granulating and drying process and granulating and drying equipment for humic acid compound fertilizer |
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| JPS5472202A (en) * | 1977-11-21 | 1979-06-09 | Mitsubishi Heavy Ind Ltd | Coal dry distillation system utilizing the heat of molten slag |
| JP2002309266A (en) * | 2001-04-16 | 2002-10-23 | Nippon Steel Corp | Horizontal fluidized-bed drying/cooling method and apparatus |
| CN1844814A (en) * | 2006-05-19 | 2006-10-11 | 登封电厂集团铝合金有限公司 | Pulverized coal drying process and apparatus |
| CN202246605U (en) * | 2011-07-22 | 2012-05-30 | 大连海事大学 | Drying characteristic experiment device for abstracting low rank coal |
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2011
- 2011-07-22 CN CN 201110207255 patent/CN102353693B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472202A (en) * | 1977-11-21 | 1979-06-09 | Mitsubishi Heavy Ind Ltd | Coal dry distillation system utilizing the heat of molten slag |
| JP2002309266A (en) * | 2001-04-16 | 2002-10-23 | Nippon Steel Corp | Horizontal fluidized-bed drying/cooling method and apparatus |
| CN1844814A (en) * | 2006-05-19 | 2006-10-11 | 登封电厂集团铝合金有限公司 | Pulverized coal drying process and apparatus |
| CN202246605U (en) * | 2011-07-22 | 2012-05-30 | 大连海事大学 | Drying characteristic experiment device for abstracting low rank coal |
Non-Patent Citations (1)
| Title |
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| 杨鹏，周成军，张健: "神东矿区煨煤干燥提质工艺及成套技术装备研究", 《陕西煤炭》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941905A (en) * | 2015-06-30 | 2015-09-30 | 中国矿业大学 | Experimental system and method for vibration grading, drying and quality improving of low-rank coal |
| CN104941905B (en) * | 2015-06-30 | 2017-06-16 | 中国矿业大学 | A kind of low-order coal vibration separation drying and upgrading experimental system and method |
| CN113932580A (en) * | 2020-06-29 | 2022-01-14 | 红河锦东化工股份有限公司 | Spraying, granulating and drying process and granulating and drying equipment for humic acid compound fertilizer |
| CN113019667A (en) * | 2021-01-29 | 2021-06-25 | 华电电力科学研究院有限公司 | System and method for adjusting flue gas volume at coal mill inlet of fan mill pulverizing system |
| CN113019667B (en) * | 2021-01-29 | 2022-06-14 | 华电电力科学研究院有限公司 | System and method for adjusting flue gas volume at coal mill inlet of fan mill pulverizing system |
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| CN102353693B (en) | 2013-04-24 |
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