CN203629234U - Device for assisting in drying coal-fired power plant coal by utilizing solar energy - Google Patents
Device for assisting in drying coal-fired power plant coal by utilizing solar energy Download PDFInfo
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- CN203629234U CN203629234U CN201320847412.XU CN201320847412U CN203629234U CN 203629234 U CN203629234 U CN 203629234U CN 201320847412 U CN201320847412 U CN 201320847412U CN 203629234 U CN203629234 U CN 203629234U
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- coal
- pipeline
- solar heater
- air door
- drying
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Abstract
The utility model discloses a device for assisting in drying coal-fired power plant coal by utilizing solar energy. High-moisture coal usually has the typical features of high moisture, high volatile components, high ash content, low heating values and low ash fusion points. Although all the coal can be directly used for boiler combustion, moisture may absorb a large amount of heat in the vaporization process, the high-moisture coal can directly enter a boiler, the combustion efficiency is low, and a series of problems are brought to operation of a boiler unit. The device comprises a solar heater 8 which is connected with a dryer 9 through a pipe system, and a set of aperture adjustable air doors are arranged in the pipe system. A drying medium self-circulation pipeline of the pipe system is internally provided with a fan 14. The pipe system comprises a cold air inlet channel, a solar heater inlet pipeline, an evacuation pipeline, a coal mill inlet pipeline, a solar heater outlet pipeline, the drying medium self-circulation pipeline and a high-temperature flue gas inlet pipeline. The device is used for assisting in drying the coal by utilizing the solar energy.
Description
technical field:
the utility model relates to one and utilizes solar energy to coal-burning power plant's ature of coal drying aid device.
background technology:
power Plant in China is take coal as main fuel, for example, because hydrogenous coal (brown coal) price is lower, so increasing new power plant construction is using hydrogenous coal as design coal, and the power plant that more and more puts into operation also starts to mix burning hydrogenous coal, in order to improve profit from power plant.
hydrogenous coal often has the typical feature of " three Senior Two are low ", both high-moisture, high volatile, high ash content, low heat value, low ash smelting point, wherein water content is on average higher than 30%, soprano has arrived 50%, although these coals can be directly used in boiler combustion, but because moisture can absorb in a large number heat in vaporescence, so it is not high that hydrogenous coal directly enters the efficiency of combustion of people's boiler, and bring a series of problem to the operation of boiler unit: high-moisture causes vapour content in flue gas to increase, and flue gas loss is increased; High volatile, low ash smelting point makes hydrogenous coal have stronger Slagging Characteristics; Low heat value increases coal consumption amount, and the investments such as the adopting of fuel, transportation, storage, processing increase.These all make efficiency of plant generally on the low side.Therefore adopt efficient electricity generation system, the heat-economy that improves power station has very important effect.
under current Energy situation, the efficient utilization of hydrogenous coal has very important realistic meaning.Therefore reduce moisture, improve energy density just become one of key issue of hydrogenous coal processing and utilization.Grinding all in coal pulverizer through row of the dry and coal dust of tradition coal-burning power plant ature of coal, for some high-moisture atures of coal, such drying effect can not be satisfactory.And as the one of clean energy resource, solar energy highly effective utilization has also been subject to people's generally attention, the mist that utilizes solar energy heating air, flue gas or flue gas/air is drying medium, hydrogenous coal in order to drying aid as boiler oil, can increase undoubtedly boiler heat utilization ratio, the thermal loss such as smoke evacuation are reduced, can further reduce power plant's operating cost, strengthen unit security, the energy-saving and emission-reduction of power plant are produced to obvious facilitation.
utility model content:
the purpose of this utility model is to provide one and utilizes solar energy to coal-burning power plant's ature of coal drying aid device.
above-mentioned object realizes by following technical scheme:
one utilizes solar energy to coal-burning power plant's ature of coal drying aid device, its composition comprises: solar heater, described solar heater is connected by piping with drier, in described piping, be furnished with one group of opening angle adjustable air door, in the drying medium self-loopa pipeline of described piping, blower fan is installed, described piping comprises inlet of cold air passage, solar heater inlet pipeline, emptying pipe, coal pulverizer inlet pipeline, solar heater outlet conduit, described drying medium self-loopa pipeline, high-temperature flue gas entry pipeline, in described inlet of cold air passage, be provided with air door A, in described solar heater inlet pipeline, be provided with air door B, in described emptying pipe, be provided with air door C, in described coal pulverizer inlet pipeline, be provided with air door D, in described solar heater outlet conduit, be provided with air door E, in described drying medium self-loopa pipeline, be provided with air door F, in described high-temperature flue gas entry pipeline, be provided with air door G, described solar heater is by described solar heater inlet pipeline, described solar heater outlet conduit is in parallel with described drying medium self-loopa pipeline.
described utilizes solar energy to coal-burning power plant's ature of coal drying aid device, and described drier comprises charging aperture, discharging opening, in the hothouse of described drier, conveyer belt is installed.
beneficial effect:
the utility model for improve or strengthen boiler to the adaptability problem of hydrogenous coal through having gone improvement, to increase boiler efficiency and security as object, utilize the mist heating of solar energy to air, flue gas or flue gas/air, make its drying aid medium as ature of coal.Utilize blower fan, drying medium can form a closed circuit, can partly enter coal pulverizer or to sky discharge, can regulate like this water content of drying medium, can improve the drying capacity of drying medium.In the time that intensity of sunshine meets solar energy heating requirement, system does not extract inner flue gas of the stove as drying medium, and in the time that the satisfied heating of intensity of sunshine requires, system drying medium can be the mist of flue gas or flue gas/air.Can guarantee like this drying capacity of this system to coal.The utility model, considering, on adaptive basis, to utilize clean, cheap solar energy, has reduced the water content of ature of coal, can assist coal pulverizer being dried hydrogenous coal.Concerning newly constructed boiler, can reduce because of the caused design difficulty of coal reason, improve the flexibility of design work; Concerning the power plant of mixing burning hydrogenous coal to put into operation, the utility model can improve security and the economy of boiler.Apparatus structure described in the utility model is simple, be easy to realize, easy for installation, have a good application prospect.
the utility model utilizes solar energy to heat these three kinds of drying mediums of the mist of air, flue gas or flue gas/air, gas after heating to ature of coal through row drying aid, gas flow power resources are in system inner blower, can reduce like this ature of coal and enter coal pulverizer moisture in the past, the water content that can better guarantee coal pulverizer outlet coal dust is reduced to the level that requires, and is conducive to power plant's efficient stable operation.
this utilizes solar energy as follows to the air door control method of coal-burning power plant's ature of coal drying aid device: when intensity of sunshine enough high; solar heater outlet hot air temperature is higher, can meet while being dried the requiring of ature of coal, and air door A opens; extraneous cold air enters system; the aperture of damper B and E, utilizes solar energy to air heat simultaneously, produces hot-air; hot-air is as drying medium; the dry ature of coal being entered by charging aperture, at this moment closes air door A, in order to maintain intrasystem temperature; Make intrasystem part air without solar heater, in order to the temperature in regulating system by the aperture of damper F, B and E; Close air door A, C and d system and form the circulation of sealing, the aperture of damper A, C and D makes new cold air enter system and hot-air is discharged system, in order to the temperature and humidity of air in regulating system, the aperture of damper C and D can select to make hot-air enter coal pulverizer or enter in ambient atmosphere;
when undercapacity at sunshine, solar heater outlet hot air temperature is lower, can not meet the requiring of dry ature of coal time, the aperture of damper G makes high-temperature flue gas enter system, in order to dry ature of coal, at this moment the aperture of damper A, select using flue gas as single drying medium or using flue gas/air gas mixture as drying medium, same damper F, the aperture of B and E makes solar heater heating flue gas or flue gas/air gas mixture, the temperature of regulating system inner drying medium like this, the aperture of closing air door C damper D makes dry gas enter coal pulverizer.
accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present utility model.
the specific embodiment:
embodiment 1:
one utilizes solar energy to coal-burning power plant's ature of coal drying aid device, its composition comprises: solar heater 8, described solar heater is connected by piping with drier 9, in described piping, be furnished with one group of opening angle adjustable air door 14, in the drying medium self-loopa pipeline of described piping, blower fan be installed.Described piping comprises inlet of cold air passage, solar heater inlet pipeline, emptying pipe, coal pulverizer inlet pipeline, solar heater outlet conduit, described drying medium self-loopa pipeline, high-temperature flue gas entry pipeline, in described inlet of cold air passage, be provided with air door A, piece number: 1, in described solar heater inlet pipeline, be provided with air door B, piece number: 2, in described emptying pipe, be provided with air door C, piece number: 3, in described coal pulverizer inlet pipeline, be provided with air door D, piece number: 4, in described solar heater outlet conduit, be provided with air door E, piece number: 5, in described drying medium self-loopa pipeline, be provided with air door F, piece number: 6, in described high-temperature flue gas entry pipeline, be provided with air door G, piece number: 7, described solar heater is by described solar heater inlet pipeline, described solar heater outlet conduit is in parallel with described drying medium self-loopa pipeline.7 throttle openings are adjustable and control and do not link mutually, and each air door can be in standard-sized sheet or full-shut position.
embodiment 2:
according to utilizing solar energy to coal-burning power plant's ature of coal drying aid device described in embodiment 1, described drier comprises charging aperture 10, discharging opening 11, in the hothouse 13 of described drier, conveyer belt 12 is installed.Described charging aperture is the device with adjustable aperture, can control the coal amount that enters drier.Described conveyer belt is speed-adjustable conveyer belt, can control the time that ature of coal stops in drier.
Claims (2)
1. one kind is utilized solar energy to coal-burning power plant's ature of coal drying aid device, its composition comprises: solar heater, it is characterized in that: described solar heater is connected by piping with drier, in described piping, be furnished with one group of opening angle adjustable air door, in the drying medium self-loopa pipeline of described piping, blower fan is installed, described piping comprises inlet of cold air passage, solar heater inlet pipeline, emptying pipe, coal pulverizer inlet pipeline, solar heater outlet conduit, described drying medium self-loopa pipeline, high-temperature flue gas entry pipeline, in described inlet of cold air passage, be provided with air door A, in described solar heater inlet pipeline, be provided with air door B, in described emptying pipe, be provided with air door C, in described coal pulverizer inlet pipeline, be provided with air door D, in described solar heater outlet conduit, be provided with air door E, in described drying medium self-loopa pipeline, be provided with air door F, in described high-temperature flue gas entry pipeline, be provided with air door G, described solar heater is by described solar heater inlet pipeline, described solar heater outlet conduit is in parallel with described drying medium self-loopa pipeline.
2. the solar energy that utilizes according to claim 1, to coal-burning power plant's ature of coal drying aid device, is characterized in that: described drier comprises charging aperture, discharging opening, in the hothouse of described drier, conveyer belt is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847412.XU CN203629234U (en) | 2013-12-21 | 2013-12-21 | Device for assisting in drying coal-fired power plant coal by utilizing solar energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847412.XU CN203629234U (en) | 2013-12-21 | 2013-12-21 | Device for assisting in drying coal-fired power plant coal by utilizing solar energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203629234U true CN203629234U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320847412.XU Withdrawn - After Issue CN203629234U (en) | 2013-12-21 | 2013-12-21 | Device for assisting in drying coal-fired power plant coal by utilizing solar energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203629234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697669A (en) * | 2013-12-21 | 2014-04-02 | 哈尔滨锅炉厂有限责任公司 | Device for performing secondary drying on coal-fired power plant coal through solar energy and air door adjustment method |
-
2013
- 2013-12-21 CN CN201320847412.XU patent/CN203629234U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697669A (en) * | 2013-12-21 | 2014-04-02 | 哈尔滨锅炉厂有限责任公司 | Device for performing secondary drying on coal-fired power plant coal through solar energy and air door adjustment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20160217 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |