CN201413003Y - Superheated steam lignite predrying system - Google Patents
Superheated steam lignite predrying system Download PDFInfo
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- CN201413003Y CN201413003Y CN 200920026493 CN200920026493U CN201413003Y CN 201413003 Y CN201413003 Y CN 201413003Y CN 200920026493 CN200920026493 CN 200920026493 CN 200920026493 U CN200920026493 U CN 200920026493U CN 201413003 Y CN201413003 Y CN 201413003Y
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- fluidized bed
- internal heating
- superheated steam
- heating fluidized
- drying machine
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Abstract
The utility model discloses a superheated steam lignite predrying system, which comprises an internal heating fluidized bed dryer with at least one internal heat exchanger which is provided with a feeder, a discharge valve II and at least one stage of deduster; the internal heat exchanger is connected with saturated steam, a fluidized bed of the internal heating fluidized bed dryer is connected with superheated steam, and the internal heat exchanger is also connected with a condensed water system; after the steam exhaust of the internal heating fluidized bed dryer is dedusted by the deduster,part of the steam exhaust returns to the fluidized bed via a pressurizer, and the other part of the steam exhaust is exhausted.
Description
Technical field
The utility model is a kind of drying device, and is a kind of specifically with the internal heating fluidized bed and superheated steam brown coal pre-drying device grafting of superheated steam technology.
Background technology
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 owing to brown coal fugitive constituent height, easy catching fire, and drying efficiency is low and equipment investment is huge.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.
The commercial Application of present domestic brown coal drying does not also have actual expansion, and at the brown coal power plant of existing use pulverized-coal fired boiler, domestic present commercial scale brown coal pre-dehydration device is blank.
The utility model summary
The purpose of this utility model is exactly in order to address the above problem, a kind of superheated steam brown coal pre-drying device is provided, it is with internal heating fluidized bed and superheat steam drying technology grafting, can be directly with the brown coal drying of moisture 30%-50% to moisture 12%, filled up the blank of domestic industry scale brown coal pre-drying device.
For achieving the above object, the utility model adopts following technical scheme:
A kind of superheated steam brown coal pre-drying device, it comprises the internal heating fluidized bed drying machine that has at least one built-in heat exchanger, internal heating fluidized bed drying machine is provided with feeding device, discharge valve II and one-level dust arrester at least; Wherein, built-in heat exchanger is connected with saturated vapor, and the fluid bed of internal heating fluidized bed drying machine is connected with superheated steam, and built-in heat exchanger also is connected with condensate system; The weary gas of internal heating fluidized bed drying machine is leaded up to pressue device and is returned fluid bed after the dust arrester dedusting; Another road emptying.
Described dust arrester is a two-stage, is made up of the cyclone dust collectors and the electric cleaner of series connection; Wherein weary gas is after the cyclone dust collectors dedusting, and the dry powder of collection is sent into the finished product district, and weary gas then one the tunnel returns internal heating fluidized bed drying machine, the emptying after the electric cleaner dedusting of another road after the pressue device pressurization.
Described feeding device comprises feed bin, and feed bin cooperates with conveying worm, and conveying worm is connected with discharge valve I, and discharge valve I is connected with internal heating fluidized bed drying machine.
Described pressue device is a blower fan.
Superheated steam brown coal pre-drying device of the present utility model is made up of feed arrangement, internal heating fluidized bed drying machine, cyclone dust collectors, electric cleaner, finished product material conveying device, circulating fan etc.With internal heating fluidized bed drying machine and the grafting of superheat steam drying technology, internal heating fluidized bed drying machine is that interior heat exchanger is set in fluid bed, provides dry materials required most of heat.Superheated steam as fluidizing agent in order to carry the steam that brown coal drying is deviate from.The whole return boilers of condensed water utilize again.
The beneficial effects of the utility model: energy-saving effect is remarkable, has improved the thermal efficiency with superheat steam drying, and whole overheated dry run is oxygen-free environment, and is safe and reliable, continued operation, but with the process matched therewith seamless link of original power plant.Aspect raising thermoelectricity industry energy-saving consumption reduction, because the predrying technology of superheated steam brown coal has been compared remarkable advantages with conventional hot blast with steam contact drying technology, technical-economic index greatly improves, and 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, the predrying technology of develop and spread superheated steam brown coal energetically, technology upgrading innovation and energy-saving and emission-reduction work to China's electric power energy industry, to play crucial impetus, be environmentally friendly, water resource economizing type clean coal technological project.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein, 1. feed bin 2. conveying worms 3. discharge valve I 4. internal heating fluidized bed drying machine 5. discharge valve II 6. cyclone dust collectors 7. discharge valve III 8. electric cleaners 9. blower fans.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Among Fig. 1, superheated steam brown coal pre-drying device comprises internal heating fluidized bed drying machine 4, is provided with at least one built-in heat exchanger in internal heating fluidized bed drying machine 4.The fluid bed of internal heating fluidized bed drying machine 4 is connected with superheated steam, and built-in heat exchanger then is connected with saturated vapor.The top of internal heating fluidized bed drying machine 4 is provided with discharge valve I3, and it is connected with conveying worm 2, and conveying worm 2 cooperates with feed bin 1.The bottom of internal heating fluidized bed drying machine 4 is provided with discharge valve II5, and gained finished product dry powder is sent into the finished product district thus, and the dry powder that while cyclone dust collectors 6 are collected is then sent into the finished product district through the discharge valve III7 of cyclone dust collectors 6 bottoms.Weary gas is after cyclone dust collectors 6 dedustings, and the weary gas one tunnel of gained is sent fluid bed back to, emptying after another Lu Zejing electric cleaner 8 dedustings after blower fan 9 pressurizations.
Drying process of the present utility model is: the wet brown coal of moisture 30%-50% are fallen in the bed by the charging aperture that conveying worm 2, discharge valve I3 are delivered to internal heating fluidized bed drying machine 4.Superheated steam enters fluid bed by internal heating fluidized bed bottom air compartment, through entering bed behind the equal wind of air-distribution device.The superheated steam that enters bed in this process is controlled effectively, thereby makes an interior material keep stable fluidization.The heat heat drying that brown coal are provided by built-in heat exchanger and superheated steam in fluid bed, by the control time of staying of brown coal in bed, after being dried to the moisture of requirement, discharging opening discharge valve II5 by fluid bed dryer discharges, and the dry powder of collecting with 6 times discharge valve III7 of cyclone dust collectors is delivered to subsequent processing.Drying separates out moisture and partial material is carried by the superheated steam in the bed, flow out internal heating fluidized bed drying machine 4, after cyclone dust collectors 6 dedustings, a part is sent back to the air compartment of internal heating fluidized bed drying machine 4 by blower fan 9 pressurizations, as drying medium, another part is emptying matter after 8 dedustings of one-level electric cleaner.The whole return boilers of condensed water in internal heating fluidized bed drying machine 4 built-in heat exchangers utilize again.
Claims (4)
1. a superheated steam brown coal pre-drying device is characterized in that, it comprises the internal heating fluidized bed drying machine that has at least one built-in heat exchanger, and internal heating fluidized bed drying machine is provided with feeding device, discharge valve II and one-level dust arrester at least; Wherein, built-in heat exchanger is connected with saturated vapor, and the fluid bed of internal heating fluidized bed drying machine is connected with superheated steam, and built-in heat exchanger also is connected with condensate system; The weary gas of internal heating fluidized bed drying machine is leaded up to pressue device and is returned fluid bed after the dust arrester dedusting; Another road emptying.
2. superheated steam brown coal pre-drying device as claimed in claim 1 is characterized in that described dust arrester is a two-stage, is made up of the cyclone dust collectors and the electric cleaner of series connection; Wherein weary gas is after the cyclone dust collectors dedusting, and the dry powder of collection is sent into the finished product district, and weary gas then one the tunnel returns internal heating fluidized bed drying machine, the emptying after the electric cleaner dedusting of another road after the pressue device pressurization.
3. superheated steam brown coal pre-drying device as claimed in claim 1 is characterized in that described feeding device comprises feed bin, and feed bin cooperates with conveying worm, and conveying worm is connected with discharge valve I, and discharge valve I is connected with internal heating fluidized bed drying machine.
4. superheated steam brown coal pre-drying device as claimed in claim 1 or 2 is characterized in that described pressue device is a blower fan.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920026493 CN201413003Y (en) | 2009-06-04 | 2009-06-04 | Superheated steam lignite predrying system |
| RU2011129266/06A RU2527904C2 (en) | 2009-06-04 | 2009-12-24 | Multistage system and method of preliminary drying brown coal using superheated steam |
| TR2011/12915T TR201112915T1 (en) | 2009-06-04 | 2009-12-24 | Very effective brown coal pre-drying system using superheated steam and related process. |
| AU2009347547A AU2009347547B2 (en) | 2009-06-04 | 2009-12-24 | Multi-effect brown coal predrying system using superheated steam and process thereof |
| PCT/CN2009/001541 WO2010139103A1 (en) | 2009-06-04 | 2009-12-24 | Multi-effect brown coal predrying system using superheated steam and process thereof |
| US13/179,580 US20110265342A1 (en) | 2009-06-04 | 2011-07-11 | Superheated vapor pre-drying systems for lignite and methods for drying lignite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920026493 CN201413003Y (en) | 2009-06-04 | 2009-06-04 | Superheated steam lignite predrying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201413003Y true CN201413003Y (en) | 2010-02-24 |
Family
ID=41714886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920026493 Expired - Fee Related CN201413003Y (en) | 2009-06-04 | 2009-06-04 | Superheated steam lignite predrying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201413003Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870897A (en) * | 2010-07-09 | 2010-10-27 | 山东天力干燥设备有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| CN102650494A (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 superheated steam 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 |
-
2009
- 2009-06-04 CN CN 200920026493 patent/CN201413003Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870897A (en) * | 2010-07-09 | 2010-10-27 | 山东天力干燥设备有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| CN101870897B (en) * | 2010-07-09 | 2013-03-27 | 山东天力干燥股份有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| 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 |
| CN102650494A (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 superheated steam and high frequency |
| CN102650494B (en) * | 2012-05-21 | 2014-08-13 | 山东天力干燥股份有限公司 | Device and technology for drying lignite by jointly using superheated steam and high frequency |
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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: 250014 Shandong Province, Lixia District, Ji'nan City Hospital Road, No. 19 Patentee before: Tianli Drying Equipment Co., Ltd., Shandong |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20180604 |