CN201569260U - Indirect heat-exchange rotation superheating steam brown coal drying system - Google Patents
Indirect heat-exchange rotation superheating steam brown coal drying system Download PDFInfo
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- CN201569260U CN201569260U CN 200920318687 CN200920318687U CN201569260U CN 201569260 U CN201569260 U CN 201569260U CN 200920318687 CN200920318687 CN 200920318687 CN 200920318687 U CN200920318687 U CN 200920318687U CN 201569260 U CN201569260 U CN 201569260U
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- indirect heat
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Abstract
The utility model discloses an indirect heat-exchange rotation superheating steam brown coal drying system, which comprises a feeding device connected to a drying device, wherein a discharging end of the drying device is connected to a finished product area; one part of the tail gas enters into the feeding device to preheat materials after the tail gas passes through at least one level dust removing device; the other part is returned to the drying device to form a close loop after being heated in the heating device; and the drying device is connected with a steam heat resource and a water dredging device. The utility model combines the indirect heat-exchange rotation dryer with superheating steam drying technique so as to directly dry the brown coal containing 30% to 50% water to the brown coal containing 5% water. The utility model has the advantages of continuous operation, reliable safety, large dealing quantity and energy saving effect.
Description
Technical field
The utility model is a kind of drying process, and a kind of specifically indirect heat exchange with indirect heat exchange rotary dryer and the grafting of superheated steam technology turns round class superheated steam brown coal drying system, is used for the drying of brown coal.
Background technology
China's lignite resource is abundant, and explored reserves reach 1,303 hundred million tons.Because brown coal are coals that a kind of high volatile, high-moisture, high ash content, low heat value (about 14MJ/kg), low ash smelting point, pollution are heavy, utilization rate is low, carry out large-scale application to it, must improve its economy by methods such as drying and upgradings.
Conventional brown coal drying technology is to adopt the direct heated drums drying machine of hot flue gas and adopt steam to make the indirect whizzer of thermal source.The former is subjected to the influence of EAT because brown coal fugitive constituent height, catching fire easily, and light damage equipment then, heavy then cause casualties, bring very big hidden danger to safety in production, drying efficiency is low, and equipment investment is big.Adopt the whizzer of indirect owing to need to carry humid gas, dry power consumption is high: about 1350kg steam/ton water, and also single machine yield is little, and about 60 tons/hour of the pre-dehydrating amount of the brown coal of 300MW unit needs many parallel connections.Consider security reason, increase nitrogen gas generation system, to prevent brown coal burning in the dry run, equipment investment is big.
Novel brown coal drying technology has superheated steam fluidisation bed drying process, is medium with the overheated steam, walks steam with the direct contact zones of brown coal, and system is oxygen-free environment, and is safe.In superheat steam drying, leave drier, the superheated steam of Hui Liuing is not exactly the water vapour that material is evaporated, can utilize its heat energy easily, and system is more energy-conservation.But there is following shortcoming in fluidized bed drying system: (1) because the static bed of fluid bed is higher, and for keeping its fluidization, blower fan will have higher startup pressure head, the consumption of running medium power is also higher, the operating cost height; (2) owing to the multilayer built-in heat exchanger arrangement in the fluid bed, the whole height of fluid bed is higher, causes factory building higher, needs the multilayer operation.
The utility model content
The purpose of this utility model is exactly the advantage that absorbs brown coal superheat steam drying technology and rotating cylinder class drying equipment, overcomes the shortcoming of fluidized-bed process, proposes a kind of different brown coal superheat steam drying technology.And according to the characteristics of turning round kind equipment, supporting corresponding process system, the producer or the factory building condition that are used for familiar revolution kind equipment serviceability are suitable for arranging under the situation of revolution kind equipment.A kind of indirect heat exchange revolution class superheat steam drying system promptly is provided, can be directly with the brown coal drying of moisture 30%-50% extremely moisture 5%.
For achieving the above object, the utility model adopts following technical scheme:
A kind of indirect heat exchange turns round class superheated steam brown coal drying system, and it comprises feeding device, and feeding device is connected with drying device, and the drying device discharge end is connected into the product district; Tail gas part behind one-level dust arrester at least enters in the feeding device, pre-thermal material; Another part is sent drying device back to and is formed closed cycle after the reheat machine heating; Drying device also is connected with steam source and steam trap connection.
Described drying device is the inner indirect heat exchange rotary dryer that has inner-heating tube; Feeding device is connected with the indirect heat exchange rotary dryer, and indirect heat exchange rotary dryer discharge end is connected with the finished product district by the finished product discharge valve, and inner-heating tube one end is connected with saturated vapor, and the other end is connected with steam trap connection.
Described feeding device comprises feed bin, and feed bin is connected with conveying worm by the raw material discharge valve, and conveying worm is connected with the drying device feed end, and feed bin is provided with chuck, the emptying behind chuck of the tail gas of dust arrester, and the chuck lower end is connected with water treatment system.
Described dust arrester is cyclone dust collectors, and the discharge end of cyclone dust collectors is connected with the finished product district through the whirlwind discharge valve, and the tail gas end is connected with circulating fan, one road tail gas is sent into chuck, another road tail gas is sent drying device back to after the reheat machine heating, reheat machine is a reheater.
Indirect heat exchange revolution class superheat steam drying system of the present utility model is made up of feed arrangement, indirect heat exchange rotary dryer, cyclone dust collectors, reheater, drawing mechanism, circulating fan etc.With indirect heat exchange rotary dryer and the grafting of superheat steam drying technology, the indirect heat exchange rotary dryer is in inner barrel inner-heating tube to be set, and provides dry materials required most of heat.Indirect heat exchange revolution class Superheated Steam Drying Technology is to be drying medium with the superheated vapour in the indirect heat exchange rotary dryer, walks steam and heat is provided with the direct contact zones of brown coal.The whole return boilers of condensed water in the inner-heating tube of indirect rotary dryer utilize again, and after vapor evaporated was utilized its heat energy from brown coal, the water inlet treatment system was carried out the recovery of moisture.
The beneficial effects of the utility model: but the native system continued operation, and treating capacity is big.Whole dry run is oxygen-free environment, and is safe and reliable.All the evaporation aqueous vapor reclaims its heat energy and moisture, and energy-saving effect is remarkable.The superheated steam consumption is little, and the cleaner specification of system is little, and power consumption is low, and operating cost is low.The setting height(from bottom) of indirect heat exchange rotary dryer is low, and system's factory building is low, and is easy to operate.Because superheated steam brown coal drying technology has been compared remarkable advantages with conventional hot blast with steam contact drying technology, technical-economic index greatly improves, but and with the process matched therewith seamless link of original power plant, be environmentally friendly, water resource economizing type clean coal technological project, therefore great promotion prospect is at home and abroad arranged.In China is under the Strategic Context of main energy sources with coal, quick growth trend at brown coal generating ratio, develop and spread superheated steam brown coal drying technology to the technology upgrading innovation and the energy-saving and emission-reduction work of China's electric power energy industry, will play crucial impetus energetically.
Description of drawings
Fig. 1 is the structural representation of the utility model drying system;
Wherein, 1. feed bin, 2. raw material discharge valve, 3. conveying worm, 4. indirect heat exchange rotary dryer, 5. finished product discharge valve, 6. cyclone dust collectors, 7. whirlwind discharge valve, 8. circulating fan, 9. reheater.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Embodiment 1:
Present embodiment is the example of dry run.
Among Fig. 1, indirect heat exchange revolution class superheated steam brown coal drying system comprises that an interstation connects the heat exchange rotary dryer, and indirect heat exchange rotary dryer 4 is provided with inner-heating tube.Feed bin 1 is connected with indirect heat exchange rotary dryer 4 by raw material discharge valve 2, conveying worm 3; Indirect heat exchange rotary dryer 4 is connected with the finished product district by finished product discharge valve 5.Indirect heat exchange rotary dryer 4 cyclone dust collectors 6 of also connecting.Wherein, the inner-heating tube of indirect heat exchange rotary dryer 4 is connected with saturated vapor.The tail gas of cyclone dust collectors 6 enters emptying behind the pre-thermal material of chuck of feed bin 1 by pressurized circulation blower fan 8 pressurization back one tunnel, the chuck bottom is connected with water treatment system; Another road tail gas enters reheater 9, sends indirect heat exchange rotary dryer 4 at last back to.
Drying process of the present utility model is:
Drying technology process is: the wet brown coal of moisture 30%-50% are delivered to the charging aperture of indirect heat exchange rotary dryer 4 by conveying worm 3, fall in the cylindrical shell.Saturated vapor enters the inner-heating tube of indirect heat exchange rotary dryer 4, along with the moisture in the brown coal is constantly separated out with the form of steam, original dry air is replaced into superheated steam gradually as taking humid gas in the cylindrical shell under the effect of circulating fan 8 and reheater 9.In rotary dryer, the heat heat drying that brown coal are provided by inner-heating tube and superheated steam, by the control time of staying of brown coal in cylindrical shell, after being dried to the moisture of requirement, finished product discharge valve 5 by rotary dryer is discharged, and the dry powder of collecting with 6 times whirlwind discharge valves of cyclone dust collectors 7 is delivered to subsequent processing.From the superheated steam of indirect heat exchange rotary dryer 4 outflows and the partial material of carrying secretly, after cyclone dust collectors 6 dedustings, be recycled blower fan 8 suctions, a part enters indirect heat exchange rotary dryer 4 as drying medium through after the heating of reheater 9, another part enters in feed bin 1 chuck, utilize emptying behind the pre-thermal material of its heat energy, the chuck bottom is connected the recovery of carrying out moisture with the treatment system of intaking.The whole return boilers of condensed water in indirect heat exchange rotary dryer 4 inner-heating tubes utilize again.
Certain drying system of the present utility model and drying process include but not limited to the foregoing description, and simple replacement and extension that those skilled in the art carry out on the utility model design basis all belong to protection domain of the present utility model.
Claims (4)
1. an indirect heat exchange revolution class superheated steam brown coal drying system is characterized in that it comprises feeding device, and feeding device is connected with drying device, and the drying device discharge end is connected into the product district; Tail gas part behind one-level dust arrester at least enters in the feeding device, pre-thermal material; Another part is sent drying device back to and is formed closed cycle after the reheat machine heating; Drying device also is connected with steam source and steam trap connection.
2. indirect heat exchange as claimed in claim 1 turns round class superheated steam brown coal drying system, it is characterized in that, described drying device is the inner indirect heat exchange rotary dryer that has inner-heating tube; Feeding device is connected with the indirect heat exchange rotary dryer, and indirect heat exchange rotary dryer discharge end is connected with the finished product district by the finished product discharge valve, and inner-heating tube one end is connected with saturated vapor, and the other end is connected with steam trap connection.
3. indirect heat exchange as claimed in claim 1 turns round class superheated steam brown coal drying system, it is characterized in that, described feeding device comprises feed bin, feed bin is connected with conveying worm by the raw material discharge valve, conveying worm is connected with the drying device feed end, feed bin is provided with chuck, the emptying behind chuck of the tail gas of dust arrester, and the chuck lower end is connected with water treatment system.
4. indirect heat exchange as claimed in claim 3 turns round class superheated steam brown coal drying system, it is characterized in that, described dust arrester is cyclone dust collectors, the discharge end of cyclone dust collectors is connected with the finished product district through the whirlwind discharge valve, the tail gas end is connected with circulating fan, and one road tail gas is sent into chuck, and another road tail gas is after the reheat machine heating, send drying device back to, reheat machine is a reheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920318687 CN201569260U (en) | 2009-12-28 | 2009-12-28 | Indirect heat-exchange rotation superheating steam brown coal drying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920318687 CN201569260U (en) | 2009-12-28 | 2009-12-28 | Indirect heat-exchange rotation superheating steam brown coal drying system |
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| CN201569260U true CN201569260U (en) | 2010-09-01 |
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| CN 200920318687 Expired - Lifetime CN201569260U (en) | 2009-12-28 | 2009-12-28 | Indirect heat-exchange rotation superheating steam brown coal drying system |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183122A (en) * | 2011-03-01 | 2011-09-14 | 中国中轻国际工程有限公司 | Drying dehydration steam-recycle process and device for solid containing water |
| CN102183133A (en) * | 2011-03-18 | 2011-09-14 | 中国石油化工股份有限公司 | Brown coal transporting process |
| CN102564095A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Lignite drying device by aid of low-pressure superheated steam and method |
| CN102564096A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Device used for drying materials by aid of low-pressure superheated steam |
| CN102650493A (en) * | 2012-05-21 | 2012-08-29 | 山东天力干燥股份有限公司 | Device and technology for drying lignite by jointly using rotary steam tubes and high frequency |
| CN102679689A (en) * | 2012-04-25 | 2012-09-19 | 曲靖众一精细化工股份有限公司 | Low energy consumption, low emission, coal quality guaranteed and safe drying method and device for chemical feed coal |
| CN102748923A (en) * | 2012-07-01 | 2012-10-24 | 王号德 | Method for drying coal slime |
| CN103062993A (en) * | 2013-01-23 | 2013-04-24 | 天津大学 | System device for drying lignite by superheated steam |
| CN103627467A (en) * | 2013-10-21 | 2014-03-12 | 中信重工机械股份有限公司 | Drying, upgrading and forming process of lignite rich in water |
| CN105526792A (en) * | 2015-12-22 | 2016-04-27 | 神华集团有限责任公司 | Material drying system |
| CN105659044A (en) * | 2013-10-30 | 2016-06-08 | 韩国技术有限公司 | Apparatus for drying coal using reheat steam |
| CN106766828A (en) * | 2016-11-11 | 2017-05-31 | 中国五环工程有限公司 | Brown coal drying and upgrading and Water Sproading is dried using technique and its system |
| CN108266967A (en) * | 2016-12-31 | 2018-07-10 | 天津泓泉混凝土搅拌有限公司 | A kind of wet sand drying and exhaust treatment system |
| CN109883151A (en) * | 2019-04-01 | 2019-06-14 | 江苏天合嘉能再生资源有限公司 | The furnace drying method of tailings after a kind of sorting of waste incineration slag |
| CN111504007A (en) * | 2020-04-29 | 2020-08-07 | 山东德曦环境科技有限公司 | Steam closed-loop pulsating movement combined drying system |
| CN113218151A (en) * | 2021-05-31 | 2021-08-06 | 辽宁元创石化技术有限公司 | Closed-cycle pulverized coal drying process |
| CN113758182A (en) * | 2021-08-18 | 2021-12-07 | 池州西恩新材料科技有限公司 | Ternary precursor rotary kiln drying device |
| CN115507621A (en) * | 2022-10-08 | 2022-12-23 | 中国矿业大学 | Continuous drying method for lignite |
| CN115523729A (en) * | 2022-10-08 | 2022-12-27 | 中国矿业大学 | Continuous drying device and drying method for lignite |
-
2009
- 2009-12-28 CN CN 200920318687 patent/CN201569260U/en not_active Expired - Lifetime
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183122A (en) * | 2011-03-01 | 2011-09-14 | 中国中轻国际工程有限公司 | Drying dehydration steam-recycle process and device for solid containing water |
| CN102183133A (en) * | 2011-03-18 | 2011-09-14 | 中国石油化工股份有限公司 | Brown coal transporting process |
| CN102564095A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Lignite drying device by aid of low-pressure superheated steam and method |
| CN102564096A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Device used for drying materials by aid of low-pressure superheated steam |
| CN102679689A (en) * | 2012-04-25 | 2012-09-19 | 曲靖众一精细化工股份有限公司 | Low energy consumption, low emission, coal quality guaranteed and safe drying method and device for chemical feed coal |
| CN102679689B (en) * | 2012-04-25 | 2014-10-22 | 曲靖众一精细化工股份有限公司 | Low energy consumption, low emission, coal quality guaranteed and safe drying method and device for chemical feed coal |
| CN102650493A (en) * | 2012-05-21 | 2012-08-29 | 山东天力干燥股份有限公司 | Device and technology for drying lignite by jointly using rotary steam tubes and high frequency |
| CN102650493B (en) * | 2012-05-21 | 2014-05-28 | 山东天力干燥股份有限公司 | Device and technology for drying lignite by jointly using rotary steam tubes and high frequency |
| CN102748923B (en) * | 2012-07-01 | 2014-07-02 | 王号德 | Method for drying coal slime |
| CN102748923A (en) * | 2012-07-01 | 2012-10-24 | 王号德 | Method for drying coal slime |
| CN103062993B (en) * | 2013-01-23 | 2015-02-18 | 天津大学 | System device for drying lignite by superheated steam |
| CN103062993A (en) * | 2013-01-23 | 2013-04-24 | 天津大学 | System device for drying lignite by superheated steam |
| CN103627467A (en) * | 2013-10-21 | 2014-03-12 | 中信重工机械股份有限公司 | Drying, upgrading and forming process of lignite rich in water |
| CN105659044A (en) * | 2013-10-30 | 2016-06-08 | 韩国技术有限公司 | Apparatus for drying coal using reheat steam |
| CN105526792A (en) * | 2015-12-22 | 2016-04-27 | 神华集团有限责任公司 | Material drying system |
| CN106766828A (en) * | 2016-11-11 | 2017-05-31 | 中国五环工程有限公司 | Brown coal drying and upgrading and Water Sproading is dried using technique and its system |
| CN108266967A (en) * | 2016-12-31 | 2018-07-10 | 天津泓泉混凝土搅拌有限公司 | A kind of wet sand drying and exhaust treatment system |
| CN109883151A (en) * | 2019-04-01 | 2019-06-14 | 江苏天合嘉能再生资源有限公司 | The furnace drying method of tailings after a kind of sorting of waste incineration slag |
| CN111504007A (en) * | 2020-04-29 | 2020-08-07 | 山东德曦环境科技有限公司 | Steam closed-loop pulsating movement combined drying system |
| CN111504007B (en) * | 2020-04-29 | 2021-10-12 | 山东德曦环境科技有限公司 | Steam closed-loop pulsating movement combined drying system |
| CN113218151A (en) * | 2021-05-31 | 2021-08-06 | 辽宁元创石化技术有限公司 | Closed-cycle pulverized coal drying process |
| CN113758182A (en) * | 2021-08-18 | 2021-12-07 | 池州西恩新材料科技有限公司 | Ternary precursor rotary kiln drying device |
| CN115507621A (en) * | 2022-10-08 | 2022-12-23 | 中国矿业大学 | Continuous drying method for lignite |
| CN115523729A (en) * | 2022-10-08 | 2022-12-27 | 中国矿业大学 | Continuous drying device and drying method for lignite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG TIANLI DRYING CO., LTD. Free format text: FORMER NAME: TIANLI DRYING EQUIPMENT CO., LTD., SHANDONG |
|
| CP03 | Change of name, title or address |
Address after: 250101, Shandong Province, Ji'nan hi tech Zone, No. 554 Feng Feng Road, environmental science and Technology Park, building 8, Feng Feng building, room 230 Patentee after: Shandong Tianli Drying Co., Ltd. Address before: Three Cun Cai Shi Zhen Xi Cai Shi Licheng District 250103 Shandong city of Ji'nan province No. 403 Patentee before: Tianli Drying Equipment Co., Ltd., Shandong |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |