CN204612386U - A kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit waste heat - Google Patents
A kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit waste heat Download PDFInfo
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- CN204612386U CN204612386U CN201520300742.6U CN201520300742U CN204612386U CN 204612386 U CN204612386 U CN 204612386U CN 201520300742 U CN201520300742 U CN 201520300742U CN 204612386 U CN204612386 U CN 204612386U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit waste heat, comprise coal bunker, coal bunker comprises the cylindrical direct tube section of upper segment and the lower section conically section of cone, coal bunker is followed successively by run coal bin, interlayer and heat-insulation layer from the inside to surface, at the direct tube section of heat-insulation layer and the top of cone section, Multi-layer warming tube bank is set, in the middle part of coal bunker cone section, some layers of hot-air coil pipe are set along run coal bin inwall, at the lower position of coal bunker cone section, flue gas coil pipe are set along run coal bin inwall.The beneficial effects of the utility model are: the heat utilizing boiler controller system to produce carries out predrying to the raw coal in coal bunker, take full advantage of existing heat energy, reduce energy consumption, save the floor space of pre-dryers, but also dry run carry enter stove to coal before carry out, ensure longer drying time, as-fired coal matter can be improved economically.
Description
Technical field
The utility model belongs to the energy-conservation of coal-burning boiler unit and field of Environment Protection, and particularly one utilizes waste heat to carry out the pre-dried coal bunker structure of raw coal.
Background technology
Dry technology is one of key technology improving coal value, utilizes tool to be of great significance to efficient, the environmental protection of coal.Coal drying reduces moisture content, improves caloic and energy density; The dried coal burning thermal efficiency is higher, and smoke discharge amount reduces, and decreases exhaust gas heat loss and to become estranged the energy consumption of air-introduced machine; Dried coal is beneficial to and catches fire and after-flame, volatile matter can be discharged faster in burning, form coal tar, combine with low-NO_x combustion technology and be more conducive to the generation of stove combustion initial reduction atmosphere and nox adsorption medium, and the after-flame of later stage coal dust, be conducive to the generation reducing nitrogen oxide.
China scientific research personnel adopts the economic influence of brown coal drying to carry out analytic demonstration to certain typical 300MW coal-powder boiler, before dry, coal-fired moisture is 40%, dried moisture is 15%, research shows, under the identical condition of exerting oneself of boiler, dried furnace coal weight greatly reduces, and the exhaust gas volumn of generation reduces 13.6%, and boiler efficiency improves 1.16%.Show according to another research, if removed by the moisture of 50% in brown coal, then the discharge capacity of the greenhouse gases produced after brown coal burning will be reduced by 5 ~ 10%, the environmental benefit brought is considerable.
Existing coal drying process for upgrading many places are in scale demonstration phase.Foreign Experience, and domestic existing feasible predrying technology is investigated, comprise the predrying equipment of the newly-built relative complex of many drying process ubiquities of flue gas drying, steam drying, hot water contact drying etc., hot-blast stove need be set up, all face that investment is large, equipment is complicated, floor space is large, the problems such as moving component is many, poor reliability.
Coal bunker is used to the place storing feed stock for blast furnace, its volume is large, the coal storage time wherein generally reaches more than eight hours, coal-burning boiler unit can utilize waste heat or tow taste heat wide material sources, comprises heat, the heat contained by low-pressure steam, the heat entrained by discharge of furnace bottom slag, the heat etc. contained by Wet Limestone Desulfurization loop slurry contained in flue gas.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, provides a kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit.
In order to reach above-mentioned purpose, the utility model adopts following technical scheme:
A kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit waste heat, comprise coal bunker, coal bunker comprises the cylindrical direct tube section of upper segment and the lower section conically section of cone, coal bunker is followed successively by run coal bin, interlayer and heat-insulation layer from the inside to surface, at the direct tube section of coal bunker and the top of cone section, Multi-layer warming tube bank is set along run coal bin inwall, in the middle part of coal bunker cone section, some layers of hot-air coil pipe are set along run coal bin inwall, at the lower position of coal bunker cone section, flue gas coil pipe are set along run coal bin inwall.
Further, hot-air coil pipe has several perforates.
Further, arrange in the outer side of described heat-insulation layer and restrain with Multi-layer warming the water-inlet header all communicated, opposite side setting and Multi-layer warming restrain all communicate go out water manifold.
Further, flue gas coil pipe has several perforates.
Further, the porch of flue gas coil pipe passes into the flue gas exporting out from boiler controller system air preheater.
Further, rotary cleaner is set at the outlet section of run coal bin.
Further, arrange above described hot-air coil pipe for the ring flat-plate preventing coal dust, coal grain enters hot-air coil pipe.
Further, interlayer is hollow, and inside passes into hot water or low-pressure steam, for heating and thermal insulation medium use.
The beneficial effects of the utility model are:
1) heat utilizing boiler controller system to produce carries out predrying to the raw coal in coal bunker, take full advantage of existing heat energy, reduce energy consumption, save the floor space of pre-dryers, but also dry run carry enter stove to coal before carry out, ensure longer drying time, as-fired coal matter can be improved economically;
2) utilize the enter stove raw coal of waste heat to boiler to heat, recovery and the cascade utilization of heat can be realized, improve the thermal efficiency of unit entirety.The thermal source supply that coal-burning power plant is stable, fundamentally solves the energy source problem of restriction Coal Drying Technology, need not the heating facility such as construction fever wind furnace, steam oven, and Simplified flowsheet, reduces investment outlay;
3) at outer wall sandwich establishment and the heat-insulation layer of run coal bin, heat-insulation layer helps to reduce heat loss.
Accompanying drawing explanation
Fig. 1 is the structural representation of coal bunker in the utility model;
Wherein: 1 is run coal bin, 2 is interlayer, and 3 is heat-insulation layer, and 4 is water-inlet header, and 5 is heating tube bundle, and 6 for going out water manifold, and 7 is hot-air coil pipe, and 8 is flue gas coil pipe, and 9 is rotary cleaner.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, clear, complete description is carried out to the technical scheme in the utility model embodiment.
As shown in Figure 1, a kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit waste heat, comprise coal bunker, coal bunker comprises the cylindrical direct tube section of upper segment and the lower section conically section of cone, coal bunker is followed successively by run coal bin 1, interlayer 2 and heat-insulation layer 3 from the inside to surface, at the direct tube section of coal bunker and the top of cone section, Multi-layer warming tube bank 5 is set along run coal bin inwall, in the middle part of coal bunker cone section, some layers of hot-air coil pipe 7 are set along run coal bin 1 inwall, arrange flue gas coil pipe 8 at the lower position of coal bunker cone section along run coal bin 1 inwall, wherein Multi-layer warming tube bank be arranged in parallel.
Further, hot-air coil pipe 7 has several perforates.
Further, arrange in the outer side of described heat-insulation layer 3 and restrain with Multi-layer warming the water-inlet header 4 all communicated, opposite side setting and Multi-layer warming restrain 5 all communicate go out water manifold 6.
Further, flue gas coil pipe 8 has several perforates.
Further, the porch of flue gas coil pipe 8 passes into the flue gas exporting out from boiler controller system air preheater.
Further, rotary cleaner 9 is set at the outlet section of run coal bin 1.
Further, arrange above described hot-air coil pipe 7 for the ring flat-plate preventing coal dust, coal grain enters hot-air coil pipe.
Further, interlayer 2 is hollow, and inside passes into hot water or low-pressure steam.
Raw coal is sent to run coal bin from the Cang Ding of run coal bin and stores by raw coal conveying equipment, and the outer sandwich establishment of run coal bin, arranges heat-insulation layer outside interlayer; Heating tube bundle is arranged on the top of direct tube section and cone section, and adopt hot water as heat medium, hot water enters in heating tube bundle through water-inlet header 4, discharges through water outlet header 6 after raw coal heat release.Hot-air passes into from the air inlet of hot-air coil pipe; discharging from tapping enters in run coal bin; the flue gas that medium in flue gas coil pipe uses boiler controller system air preheater to export; pass in run coal bin and use as protective gas; waste gas after heat exchange is drained into the flue gas purification system of boiler controller system from the exhaust outlet at run coal bin top, and the coal after preheating is discharged from run coal bin cone end feed opening.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. one kind utilizes the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat, it is characterized in that, comprise coal bunker, coal bunker comprises the cylindrical direct tube section of upper segment and the lower section conically section of cone, coal bunker is followed successively by run coal bin, interlayer and heat-insulation layer from the inside to surface, at the direct tube section of coal bunker and the top of cone section, Multi-layer warming tube bank is set along run coal bin inwall, in the middle part of coal bunker cone section, some layers of hot-air coil pipe are set along run coal bin inwall, at the lower position of coal bunker cone section, flue gas coil pipe are set along run coal bin inwall.
2. utilize the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat as claimed in claim 1, it is characterized in that, described hot-air coil pipe has several perforates.
3. utilize the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat as claimed in claim 1, it is characterized in that, arrange in the outer side of described heat-insulation layer and restrain with Multi-layer warming the water-inlet header all communicated, opposite side setting and Multi-layer warming restrain all communicate go out water manifold.
4. utilize the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat as claimed in claim 1, it is characterized in that, described flue gas coil pipe has several perforates.
5. utilize the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat as claimed in claim 4, it is characterized in that, the porch of described flue gas coil pipe passes into the flue gas exporting out from boiler controller system air preheater.
6. utilize the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat as claimed in claim 1, it is characterized in that, rotary cleaner is set at the outlet section of described run coal bin.
7. utilize the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat as claimed in claim 1, it is characterized in that, arrange above described hot-air coil pipe for the ring flat-plate preventing coal dust, coal grain enters hot-air coil pipe.
8. utilize the coal bunker of the predrying raw coal of coal-burning boiler unit waste heat as claimed in claim 1, it is characterized in that, described interlayer is hollow, and inside passes into hot water or low-pressure steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520300742.6U CN204612386U (en) | 2015-05-11 | 2015-05-11 | A kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit waste heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520300742.6U CN204612386U (en) | 2015-05-11 | 2015-05-11 | A kind of coal bunker utilizing the predrying raw coal of coal-burning boiler unit waste heat |
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| CN204612386U true CN204612386U (en) | 2015-09-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258755A (en) * | 2015-10-20 | 2016-01-20 | 江苏大唐国际吕四港发电有限责任公司 | Coal bunker amount real-time measuring and calculating method |
| CN110595170A (en) * | 2019-09-27 | 2019-12-20 | 中冶焦耐(大连)工程技术有限公司 | Material storage bin with draining and drying functions |
| CN110779318A (en) * | 2019-03-14 | 2020-02-11 | 邢台旭阳科技有限公司 | Wet coal drying device and wet coal drying method using same |
-
2015
- 2015-05-11 CN CN201520300742.6U patent/CN204612386U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258755A (en) * | 2015-10-20 | 2016-01-20 | 江苏大唐国际吕四港发电有限责任公司 | Coal bunker amount real-time measuring and calculating method |
| CN105258755B (en) * | 2015-10-20 | 2018-11-02 | 江苏大唐国际吕四港发电有限责任公司 | A kind of real-time survey calculation method of coal bunker coal amount |
| CN110779318A (en) * | 2019-03-14 | 2020-02-11 | 邢台旭阳科技有限公司 | Wet coal drying device and wet coal drying method using same |
| CN110595170A (en) * | 2019-09-27 | 2019-12-20 | 中冶焦耐(大连)工程技术有限公司 | Material storage bin with draining and drying functions |
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Address after: 250014 5th floor, Swan Building, 157 Lishan Road, Lixia District, Jinan City, Shandong Province Patentee after: Guoneng (Shandong) energy environment Co.,Ltd. Address before: 250014 4th floor, South Block B, Lishan Mingjun, 173 Lishan Road, Jinan City, Shandong Province Patentee before: SHANDONG SHENHUA SHANDA ENERGY ENVIRONMENTAL Co.,Ltd. |
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