CN2620186Y - Device for drying raw coal by boiler smoke - Google Patents
Device for drying raw coal by boiler smoke Download PDFInfo
- Publication number
- CN2620186Y CN2620186Y CN 03213257 CN03213257U CN2620186Y CN 2620186 Y CN2620186 Y CN 2620186Y CN 03213257 CN03213257 CN 03213257 CN 03213257 U CN03213257 U CN 03213257U CN 2620186 Y CN2620186 Y CN 2620186Y
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- Prior art keywords
- boiler
- exhaust gas
- boiler exhaust
- run coal
- gas
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Abstract
The utility model discloses a device for drying run coal by utilizing boiler exhaust-smoke, which comprises a closed run coal bin(2) which is connected with a boiler(1), and is characterized in that: the closed run coal bin(2)is provided with a boiler exhaust smoke inlet(3); the boiler exhaustsmoke inlet(3)is connected with an exhaust port of the boiler(1)through a flue gas pipe; the closed run coal bin(2)also is provided with a boiler exhaust-smoke outlet(5); and the boiler exhaustsmoke outlet(5)also is connected with a flue gas pipe, and is connected with a blower. The biggest differences is that the high-temperature flue gas generating from the boiler can be entered into the run coal bin, the run coal in the run coal bin can be dried by the heat of the flue gas. Due to the oxygen content in the flue gas, the self-ignition phenomenon of the run coal in the run coal bin caused by partial overheating in an environment with enough oxygen can be avoided, so the safety factor is high. After being dried, the run coal in the run coal bin is entered into the boiler for being burnt through a coaling device, thereby the shortcoming that the run coat has moisture can be overcome, the work efficiency of the boiler is improved.
Description
Technical field:
The utility model relates to a kind of device that can carry out drying to the raw coal in the run coal bin, and especially a kind of boiler exhaust gas that utilizes carries out dry device to raw coal.
Background technology:
Existing boiler combustion system generally all is provided with run coal bin, and raw coal enters the boiler internal combustion through the coal supply device, and the flue gas that the burning back produces causes chimney by blower fan again and discharges.Because existing raw coal not through any dry processing, contains than juicy in the raw coal in run coal bin.Its disadvantage is as follows: one. and be unfavorable for raw coal combustion, even raw coal caught fire difficulty takes place; Two. moisture becomes heat absorption into steam, has reduced the ignition temperature of raw coal, thereby has reduced the efficient of boiler; Three. the steam that is become by moisture will increase the volume of flue gas, and the load of blower fan is increased, and promptly strengthen blower fan power consumption, waste energy; Four. moisture will make the low temperature heating surface of whole boiler combustion system that corrosion phenomenon takes place easily, reduce the service life of boiler combustion system; Five. moisture will make the coal dust bonding, cause run coal bin coal spout, coal supply device to stop up easily, influence normal coal supply.And if any traditional heater (devices such as electrothermal tube, microwave radiation) is set in run coal bin, not only expend the energy, also make raw coal easily since in the environment of oxygen abundance hot-spot and, exist great potential safety hazard in the run coal bin internal combustion.
Summary of the invention:
The utility model is in order to solve in the prior art existing being difficult to raw coal in the run coal bin to be carried out dry technical problem, provides a kind of energy savings, utilized boiler exhaust gas that safety coefficient is high that raw coal is carried out dry device.
Technical solution of the present utility model is: a kind of boiler exhaust gas that utilizes carries out dry device to raw coal, be provided with the airtight run coal bin 2 that joins with boiler 1, on airtight run coal bin 2, be provided with boiler exhaust gas import 3, the exhaust opening 4 of boiler exhaust gas import 3 and boiler 1 joins by gas flue, on airtight run coal bin 2, also be provided with boiler exhaust gas outlet 5, also be connected to gas flue with boiler exhaust gas outlet 5, in gas flue, be connected to blower fan.
The described blower fan that is connected in gas flue is to be connected to boiler exhaust gas pressure fan 7 in the gas flue 6 between the exhaust opening 4 of boiler exhaust gas import 3 and boiler 1.
Described in gas flue, be connected to blower fan be with the gas flue 8 of boiler exhaust gas outlet 5 in be connected to boiler exhaust gas induced-draught fan 9.
Described in gas flue, be connected to blower fan be connected in the gas flue 6 between the exhaust opening 4 of boiler exhaust gas import 3 and boiler 1 boiler exhaust gas pressure fan 7 and with the gas flue 8 of boiler exhaust gas outlet 5 in be connected to boiler exhaust gas induced-draught fan 9.
Be connected to deduster 10 in the boiler exhaust gas of airtight run coal bin 2 outlet 6 gas flues that join 8, be connected to coal dust storage device 11 between airtight run coal bin 2 and the deduster 10.
The utility model is compared with prior art, and the difference of its maximum is exactly that the high-temperature flue gas that boiler can be produced feeds in the run coal bin, utilizes the heat in the flue gas that the raw coal in the run coal bin is carried out drying.Because the oxygen content in the flue gas is low, can avoid raw coal in the environment of oxygen abundance hot-spot and in run coal bin the phenomenon of spontaneous combustion the safety coefficient height takes place.Raw coal in the run coal bin enters boiler combustion by stoker after drying again, fully reduce the moisture in the raw coal, can overcome and contain the existing shortcoming of moisture in the raw coal, improved the ignition temperature of raw coal, then improve the efficient of boiler, can save a large amount of fire coals; Simultaneously, flue gas volume can reduce because steam reduces, and has reduced the load of blower fan, and the power consumption of blower fan is reduced, and then can save a large amount of electric energy; Whole boiler combustion system also can be avoided phenomenons such as burn into obstruction, and reliability is improved.
Description of drawings:
Fig. 1 is the schematic diagram of the utility model embodiment.
The specific embodiment:
Below in conjunction with the description of drawings specific embodiment of the present utility model.As shown in Figure 1: the utility model embodiment is provided with the airtight run coal bin 2 that joins by coal supply device 13 and boiler 1.Airtight run coal bin 2 promptly is added with capping 14 on run coal bin, capping 14 is provided with anti-explosion safety door 15 and run coal bin entrance door 16, and anti-explosion safety door 17, run coal bin entrance door 16 sealing parts all are provided with sealing ring, in case when work boiler exhaust gas reveal.On airtight run coal bin 2, be provided with boiler exhaust gas import 3, the exhaust opening 4 of boiler exhaust gas import 3 and boiler 1 joins by gas flue, on airtight run coal bin 2, also be provided with boiler exhaust gas outlet 5, also be connected to gas flue with boiler exhaust gas outlet 5, be connected to blower fan in gas flue, whole exhaust gases passes all should be in air-tight state.Can in the gas flue 6 between the exhaust opening 4 of boiler exhaust gas import 3 and boiler 1, be connected to boiler exhaust gas pressure fan 7, also can with the gas flue 8 of boiler exhaust gas outlet 5 in be connected to boiler exhaust gas induced-draught fan 9, not only be connected in the gas flue 6 between the exhaust opening 4 of boiler exhaust gas import 3 and boiler 1 boiler exhaust gas pressure fan 7 but also with the gas flue 8 of boiler exhaust gas outlet 5 in be connected to boiler exhaust gas induced-draught fan 9, form balanced draft.Discharge in order to prevent coal ash, can export in 6 gas flues that join 8 at boiler exhaust gas and be connected to deduster 10 (coal dust classifier) with airtight run coal bin 2, be connected to coal dust storage device 11 between airtight run coal bin 2 and the deduster 10, make through the coal dust that deduster 10 is produced and get back in the airtight run coal bin 2.Gas flue 6 between the exhaust opening 4 of boiler exhaust gas pressure fan 7 and boiler 1 joins with chimney inlet baffle 12, can distribute boiler exhaust gas.
Can be during work with gas flue 8, the other end of chimney inlet baffle 12 and chimney 17 join, when need be to raw coal dry, regulate the flue gas that leads to chimney 17 with chimney inlet baffle 12, at this moment, by boiler exhaust gas pressure fan 7 and (or) boiler exhaust gas induced-draught fan 9 delivers to the part boiler exhaust gas in the airtight run coal bin 2 by gas flue 6, boiler exhaust gas import 3, the boiler exhaust gas of high temperature carries out heat drying to the raw coal in the run coal bin 2, then, boiler exhaust gas enters chimney 17 discharges by boiler exhaust gas outlet 5, gas flue 8; Another part boiler exhaust gas enters chimney 17 by chimney inlet baffle 12 and discharges.If when not needing that raw coal carried out drying, blower fan quits work, boiler exhaust gas enters chimney 17 by chimney inlet baffle 12 fully and discharges.
Claims (6)
1. one kind can be utilized boiler exhaust gas that raw coal is carried out dry device, be provided with the airtight run coal bin (2) that joins with boiler (1), it is characterized in that: on airtight run coal bin (2), be provided with boiler exhaust gas import (3), the exhaust opening (4) of boiler exhaust gas import (3) and boiler (1) joins by gas flue, on airtight run coal bin (2), also be provided with boiler exhaust gas outlet (5), also be connected to gas flue with boiler exhaust gas outlet (5), in gas flue, be connected to blower fan.
2. the boiler exhaust gas that utilizes according to claim 1 carries out dry device to raw coal, it is characterized in that: the described blower fan that is connected in gas flue is to be connected to boiler exhaust gas pressure fan (7) in the gas flue (6) between the exhaust opening (4) of boiler exhaust gas import (3) and boiler (1).
3. the boiler exhaust gas that utilizes according to claim 1 carries out dry device to raw coal, it is characterized in that: described in gas flue, be connected to blower fan be with the gas flue (8) of boiler exhaust gas outlet (5) in be connected to boiler exhaust gas induced-draught fan (9).
4. the boiler exhaust gas that utilizes according to claim 1 carries out dry device to raw coal, it is characterized in that: the described blower fan that is connected in gas flue is to be connected to boiler exhaust gas pressure fan (7) in the gas flue (6) between the exhaust opening (4) of boiler exhaust gas import (3) and boiler (1) and to export in the gas flue (8) of (5) with boiler exhaust gas to be connected to boiler exhaust gas induced-draught fan (9).
5. according to claim 1 or 2 or the 3 or 4 described boiler exhaust gas that utilize raw coal is carried out dry device, it is characterized in that: be connected to deduster (10) in the gas flue (8) that joins with the boiler exhaust gas of airtight run coal bin (2) outlet (6), be connected to coal dust storage device (11) between airtight run coal bin (2) and the deduster (10).
6. according to claim 1 or 2 or the 3 or 4 described boiler exhaust gas that utilize raw coal is carried out dry device, it is characterized in that: the gas flue (6) between the exhaust opening (4) of boiler exhaust gas pressure fan (7) and boiler (1) joins with chimney inlet baffle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213257 CN2620186Y (en) | 2003-05-21 | 2003-05-21 | Device for drying raw coal by boiler smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213257 CN2620186Y (en) | 2003-05-21 | 2003-05-21 | Device for drying raw coal by boiler smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2620186Y true CN2620186Y (en) | 2004-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03213257 Expired - Fee Related CN2620186Y (en) | 2003-05-21 | 2003-05-21 | Device for drying raw coal by boiler smoke |
Country Status (1)
| Country | Link |
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| CN (1) | CN2620186Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893370A (en) * | 2010-07-07 | 2010-11-24 | 华北电力大学（保定） | System adopting high concentration CO2 flue gas as coal dust drying medium in boiler |
| CN102155744A (en) * | 2010-12-22 | 2011-08-17 | 上海锅炉厂有限公司 | System for pre-drying coal with high water content by utilizing residual heat of boiler gas |
| CN102759118A (en) * | 2011-04-29 | 2012-10-31 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Lignite drum smoke pre-drying power generation integrated system and process |
| CN102788346A (en) * | 2012-07-27 | 2012-11-21 | 濮阳县飞达炉料有限公司 | Improved boiler system |
| CN103688121A (en) * | 2011-07-19 | 2014-03-26 | 巴布考克日立株式会社 | Drying conveyer, and thermal electric power generation system provided with same |
| CN103925606A (en) * | 2014-04-04 | 2014-07-16 | 西安西热锅炉环保工程有限公司 | High-moisture lignite medium-speed coal mill pulverizing system heating primary air through coal gas burning |
| CN110079352A (en) * | 2019-05-10 | 2019-08-02 | 中国科学院青岛生物能源与过程研究所 | A kind of pulverized coal pyrolysis coal is dry and expects encapsulation technique |
| CN110285441A (en) * | 2019-07-06 | 2019-09-27 | 黄林 | A kind of boiler system with residual heat collection function |
-
2003
- 2003-05-21 CN CN 03213257 patent/CN2620186Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893370A (en) * | 2010-07-07 | 2010-11-24 | 华北电力大学（保定） | System adopting high concentration CO2 flue gas as coal dust drying medium in boiler |
| CN101893370B (en) * | 2010-07-07 | 2012-05-30 | 华北电力大学（保定） | System adopting high concentration CO2 flue gas as coal dust drying medium in boiler |
| CN102155744A (en) * | 2010-12-22 | 2011-08-17 | 上海锅炉厂有限公司 | System for pre-drying coal with high water content by utilizing residual heat of boiler gas |
| CN102155744B (en) * | 2010-12-22 | 2012-11-14 | 上海锅炉厂有限公司 | System for pre-drying coal with high water content by utilizing residual heat of boiler gas |
| CN102759118A (en) * | 2011-04-29 | 2012-10-31 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Lignite drum smoke pre-drying power generation integrated system and process |
| CN103688121A (en) * | 2011-07-19 | 2014-03-26 | 巴布考克日立株式会社 | Drying conveyer, and thermal electric power generation system provided with same |
| CN102788346A (en) * | 2012-07-27 | 2012-11-21 | 濮阳县飞达炉料有限公司 | Improved boiler system |
| CN102788346B (en) * | 2012-07-27 | 2015-02-04 | 濮阳县飞达炉料有限公司 | Improved boiler system |
| CN103925606A (en) * | 2014-04-04 | 2014-07-16 | 西安西热锅炉环保工程有限公司 | High-moisture lignite medium-speed coal mill pulverizing system heating primary air through coal gas burning |
| CN110079352A (en) * | 2019-05-10 | 2019-08-02 | 中国科学院青岛生物能源与过程研究所 | A kind of pulverized coal pyrolysis coal is dry and expects encapsulation technique |
| CN110285441A (en) * | 2019-07-06 | 2019-09-27 | 黄林 | A kind of boiler system with residual heat collection function |
| CN110285441B (en) * | 2019-07-06 | 2021-05-28 | 黄林 | Boiler system with waste heat collecting function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |