CN205102163U - Dry waste heat of brown coal and water recovery system - Google Patents
Dry waste heat of brown coal and water recovery system Download PDFInfo
- Publication number
- CN205102163U CN205102163U CN201520887244.6U CN201520887244U CN205102163U CN 205102163 U CN205102163 U CN 205102163U CN 201520887244 U CN201520887244 U CN 201520887244U CN 205102163 U CN205102163 U CN 205102163U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a dry waste heat of brown coal and water recovery system, wherein, the raw coal gets into the desiccator through the feeder, moisture heat absorption back vaporization in the desiccator in the raw coal, the raw coal becomes the dry coal, and the weary gas of desiccator gets into the sack cleaner and removes dust, and the buggy isolated gets into together with the dry coal through the tube cell that falls that the coal pulverizer is capable to grind, sack dust -exhaust's weary gas gets into the formula heat exchanger that condenses, accomplishes evacuation after the heat exchange with recirculated cooling water in the formula heat exchanger that condenses, recycle -water from the formula heat exchanger output utilization of condensing, recirculated cooling water after the heating passes through that the pipeline gets into one, the overgrate air heater, the cold air one, in the overgrate air heater with the heating after recirculated cooling water carry out the heat exchange, the cold air is heated, then gets into air preheater in the boiler flue and heat once more and become heat no. 1, overgrate air, recirculated cooling water after exothermic gets back to the formula heat exchanger heat absorption of condensing once more, forms complete closed loop system, has realized weary gas waste heat of desiccator and water recovery simultaneously.
Description
Technical field:
The utility model belongs to the weary gas waste heat recovery of drying brown coal and application, is specifically related to a kind of brown coal drying waste heat and water reclamation system.
Background technology:
On the existing station boiler using the drying brown coal that the predrying system of brown coal produces, by coagulating type heat exchanger to the weary air water of drying divide reclaim time, except employing condensate water is as except the weary gas heat of recoverable during cooling medium, adopt recirculated water as the mode that it adopts Air-Cooling Island to cool multipair during cooling medium, the heat of recirculated water scatters and disappears in a large number and does not obtain Appropriate application, so just causes a large amount of energy wastes.
For improving the economy of joining the predrying system unit of brown coal, while water saving, reducing units consumption further, the weary gas heat recovery system of a kind of novel drying machine need be developed.
Utility model content:
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides a kind of brown coal drying waste heat and water reclamation system.
For achieving the above object, the utility model adopts following technical scheme to be achieved:
A kind of brown coal drying waste heat and water reclamation system, comprise feeder, circulating cooling water pump, primary air fan and pressure fan, wherein, feeder outlet is connected to drying machine raw coal entrance, the outlet of drying machine dry coal is connected to coal pulverizer inlet, coal pulverizer outlet is connected to the burner of boiler, the weary gas outlet of drying machine is connected to sack cleaner entrance, sack cleaner is provided with discharge and the outlet of weary gas, its discharge is connected to coal pulverizer inlet, its weary gas outlet is connected to coagulating type heat exchanger entrance, and coagulating type heat exchanger is provided with recycle-water outlet and the outlet of weary gas;
Primary air fan is connected with Secondary Air entrance respectively by First air heater, Secondary Air heater and the air preheater First air entrance be arranged in boiler flue with pressure fan outlet, and heat one wind, the hot Secondary Air of air preheater outlet are used for coal pulverizer dry wind and boiler combustion hot blast;
Circulating cooling water pump forms a cooling water recirculation system by pipeline through coagulating type heat exchanger and the First air heater be arranged in parallel and Secondary Air heater.
The utility model further improves and is, the pipeline that the outlet of sack cleaner weary gas is connected to coagulating type heat exchanger entrance is provided with weary gas blower fan.
The utility model further improves and is, also comprises the receipts water tank reclaiming recycle-water.
The utility model further improves and is, also comprises the coal bunker for providing raw coal for feeder.
The utility model further improves and is, boiler flue exit is provided with electric cleaner, and electric cleaner outlet is connected to air-introduced machine entrance.
The utility model further improves and is, is also provided with the low-pressure coal saver for Mist heat recovering in the boiler flue between air preheater and electric cleaner.
Relative to prior art, the utility model has following beneficial effect:
A kind of brown coal drying waste heat of the utility model and water reclamation system, closed-type circulating cooling water is utilized to absorb the weary gas waste heat of heat recovery brown coal drying machine at coagulating type heat exchanger, then make heated recirculated water reclaim recirculated water heat by the cold primary and secondary air heater of boiler to the cold wind preheating of air preheater entrance, the recirculated water that thermal release completes finally gets back to again the heat absorption of coagulating type heat exchanger and forms circulation.
Use this brown coal drying waste heat and apparatus for recovering and system, effectively can reclaim the heat of the weary gas of brown coal drying, neither waste cooling water, the water in the weary gas of drying brown coal can be reclaimed again, brown coal drying unit generation economy can also be improved further.
Accompanying drawing illustrates:
Fig. 1 is the structured flowchart of a kind of brown coal drying waste heat of the utility model and water reclamation system.
In figure: 1 is coal bunker, 2 is feeder, and 3 is drying machine, 4 is coal pulverizer, and 5 is sack cleaner, and 6 is weary gas blower fan, 7 is coagulating type heat exchanger, and 8 for receiving water tank, and 9 is boiler, 10 is circulating cooling water pump, and 11 is air preheater, and 12 is low-pressure coal saver, 13 is electric cleaner, and 14 is air-introduced machine, and 15 is First air heater, 16 is Secondary Air heater, and 17 is primary air fan, and 18 is pressure fan.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, a kind of brown coal drying waste heat of the utility model and water reclamation system, its key problem in technology be following some:
1) the utility model produces system primarily of the drying brown coal of coal bunker 1, feeder 2, steam pipe swinging brown coal drying machine 3, sack cleaner 5, weary gas blower fan 6 composition, the drying brown coal pulverized coal preparation of coal pulverizer 4, boiler 9 composition and the system of use, the weary gas waste heat of the composition such as coagulating type heat exchanger 7, circulating cooling water pump 10, First air heater 15, Secondary Air heater 16, primary air fan 17, pressure fan 18 and water reclamation system, and the boiler auxiliaries such as air preheater 11, low-pressure coal saver 12, electric cleaner 13, air-introduced machine 14 composition.
2) in the utility model, coal bunker 1 is for being feeder 2 coal supply, the outlet of feeder 2 connects the raw coal entrance of drying machine 3, the dry coal outlet of drying machine 3 connects coal pulverizer import, the weary gas outlet of drying machine 3 connects the import of sack cleaner 5, the isolated coal dust of sack cleaner 5 connects coal pulverizer 4 import by powder sinking tube, is entered the burner combustion of boiler 9 after dry coal and coal dust complete and grind in coal pulverizer 4 by pulverized coal feed pipe.Boiler smoke after burning flows through boiler furnace, air preheater 11, low-pressure coal saver 12 and electric cleaner 13 successively, then discharges through air-introduced machine 14.
The weary gas outlet of sack cleaner 5 connects the entrance of weary gas blower fan 6, the outlet of weary gas blower fan 6 connects the entrance of coagulating type heat exchanger 7, weary gas is emptying complete heat exchange with recirculated cooling water in coagulating type heat exchanger 7 after, recycle-water exports return water tank 8 to from coagulating type heat exchanger 7 bottom and then utilizes, and the recirculated cooling water after heating enters First air heater 15, Secondary Air heater 16 by pipeline.
Cold air is introduced from primary air fan 17 and pressure fan 18 inlet conduits, two Fans outlets connect the import of First air heater 15, Secondary Air heater 16 respectively, the recirculated cooling water of cold air in First air heater 15, Secondary Air heater 16 and after heating carries out heat exchange, cold air is heated, then the air preheater 11 entering boiler 9 heats again, and then hot primary and secondary air uses as coal pulverizer 4 dry wind and boiler 9 burning hot blast.
3) after air preheater 11 import first and second wind-warm syndrome improves, for the waste heat in the smoke evacuation of continuation recovery boiler 9, prevent exhaust gas temperature too high, boiler 9 need arrange the low-pressure coal saver 12 of heat-recoverable by flue before electric cleaner 13, and exhaust gas temperature is reduced to 90 ~ 110 DEG C further.
4) smoke evacuation after cooling enters electric cleaner 13, can improve the efficiency of dust collection of electric cleaner 13, reduce the discharge of dust pollution thing.
In order to increase understanding of the present utility model further, now an explanation is done to its course of work:
Raw coal in coal bunker 1 enters drying machine 3 through coal spout and feeder 2, the heat that former moisture in coal absorbs steam in steam pipe in drying machine 3 gasifies, raw coal becomes dry coal, be rich in water vapour and enter sack cleaner 5 containing the weary gas of drying machine of finite concentration coal dust and carry out dedusting, enter coal pulverizer 4 together with the dry coal that isolated coal dust is exported by powder sinking tube and drying machine 3 to grind, qualified coal dust enters boiler-burner burning by pulverized coal feed pipe.The weary gas that sack cleaner 3 exports enters coagulating type heat exchanger 7 through weary gas blower fan 6, emptying complete heat exchange with recirculated cooling water in coagulating type heat exchanger 7 after, recycle-water exports return water tank 8 to from coagulating type heat exchanger 7 bottom and then utilizes, and the recirculated cooling water after heating enters First air heater 15, Secondary Air heater 16 by pipeline.First air heater 15, Secondary Air heater 16 manage interior medium be heating after recirculated cooling water, it is the primary and secondary air from primary air fan 17 and pressure fan 18 outside pipe, the recirculated cooling water of cold air in First air heater 15, Secondary Air heater 16 and after heating carries out heat exchange, cold air is heated, then enter boiler air preheater 11 and be again heated into hot primary and secondary air, then hot primary and secondary air uses as coal pulverizer 4 dry wind and boiler combustion hot blast.Recirculated cooling water after heat release is again got back to coagulating type heat exchanger 7 and is absorbed heat, forms cooling to weary gas, thus forms complete closed-loop system, achieves the weary gas waste heat of drying machine 3 and Water Sproading simultaneously.
Because air preheater 11 import wind-warm syndrome improves, exhaust gas temperature raises, and for this reason, arrange low-pressure coal saver 12 Mist heat recovering of heat-recoverable at front flue of dust collector, flue gas is discharged by electric cleaner 13, air-introduced machine 14 after cooling again.
Claims (6)
1. a brown coal drying waste heat and water reclamation system, it is characterized in that, comprise feeder (2), circulating cooling water pump (10), primary air fan (17) and pressure fan (18), wherein, feeder (2) outlet is connected to drying machine (3) raw coal entrance, the outlet of drying machine (3) dry coal is connected to coal pulverizer (4) entrance, coal pulverizer (4) outlet is connected to the burner of boiler (9), the weary gas outlet of drying machine (3) is connected to sack cleaner (5) entrance, sack cleaner (5) is provided with discharge and the outlet of weary gas, its discharge is connected to coal pulverizer (4) entrance, its weary gas outlet is connected to coagulating type heat exchanger (7) entrance, coagulating type heat exchanger (7) is provided with recycle-water outlet and the outlet of weary gas,
Primary air fan (17) is connected with Secondary Air entrance respectively by First air heater (15), Secondary Air heater (16) and air preheater (11) the First air entrance be arranged in boiler (9) flue with pressure fan (18) outlet, and heat one wind that air preheater (11) exports, hot Secondary Air are for coal pulverizer (4) dry wind and boiler (9) burning hot blast;
Circulating cooling water pump (10) by pipeline through coagulating type heat exchanger (7) and the First air heater (15) be arranged in parallel and Secondary Air heater (16) composition cooling water recirculation system.
2. a kind of brown coal drying waste heat according to claim 1 and water reclamation system, it is characterized in that, the pipeline that the outlet of sack cleaner (5) weary gas is connected to coagulating type heat exchanger (7) entrance is provided with weary gas blower fan (6).
3. a kind of brown coal drying waste heat according to claim 1 and water reclamation system, is characterized in that, also comprises the receipts water tank (8) reclaiming recycle-water.
4. a kind of brown coal drying waste heat according to claim 1 and water reclamation system, is characterized in that, also comprises the coal bunker (1) for providing raw coal for feeder (2).
5. a kind of brown coal drying waste heat according to claim 1 and water reclamation system, it is characterized in that, boiler (9) flue outlet place is provided with electric cleaner (13), and electric cleaner (13) outlet is connected to air-introduced machine (14) entrance.
6. a kind of brown coal drying waste heat according to claim 5 and water reclamation system, it is characterized in that, in boiler (9) flue between air preheater (11) and electric cleaner (13), be also provided with the low-pressure coal saver (12) for Mist heat recovering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887244.6U CN205102163U (en) | 2015-11-06 | 2015-11-06 | Dry waste heat of brown coal and water recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887244.6U CN205102163U (en) | 2015-11-06 | 2015-11-06 | Dry waste heat of brown coal and water recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN205102163U true CN205102163U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520887244.6U Expired - Fee Related CN205102163U (en) | 2015-11-06 | 2015-11-06 | Dry waste heat of brown coal and water recovery system |
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| Country | Link |
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| CN (1) | CN205102163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276608A (en) * | 2015-11-06 | 2016-01-27 | 西安热工研究院有限公司 | Lignite drying residual heat and water recovery system |
-
2015
- 2015-11-06 CN CN201520887244.6U patent/CN205102163U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276608A (en) * | 2015-11-06 | 2016-01-27 | 西安热工研究院有限公司 | Lignite drying residual heat and water recovery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160323 Termination date: 20181106 |