CN204513437U - A kind of cold air heating device and boiler milling system - Google Patents
A kind of cold air heating device and boiler milling system Download PDFInfo
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- CN204513437U CN204513437U CN201520221329.0U CN201520221329U CN204513437U CN 204513437 U CN204513437 U CN 204513437U CN 201520221329 U CN201520221329 U CN 201520221329U CN 204513437 U CN204513437 U CN 204513437U
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- coal
- heating device
- air
- blast stove
- cold air
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 47
- 238000003801 milling Methods 0.000 title claims abstract description 11
- 239000003245 coal Substances 0.000 claims abstract description 57
- 239000000779 smoke Substances 0.000 claims abstract description 11
- 239000000446 fuel Substances 0.000 claims description 16
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000003818 cinder Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 13
- 239000000843 powder Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000010884 boiler slag Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
Abstract
The utility model discloses a kind of cold air heating device, comprising: coal-fired hot-blast stove (1); Cool air hose (2), is the female pipe blast pipe of heat primary air, is communicated with the air inlet of described coal-fired hot-blast stove (1); Warm-air pipe (3), is the female pipe discharge pipe of the heat primary air leading to coal pulverizer, is communicated with the air outlet of described coal-fired hot-blast stove (1); Combustion-supporting airduct (4), draws from described warm-air pipe (3), is communicated with the combustion-supporting air port of described coal-fired hot-blast stove (1).This cold air heating device is when using plasma ignition system or micro oil ignition system cold start coal pulverizer, for coal pulverizer provides powder process hot blast, the powder process requirement of each coal can be adapted to, do not affect First air oxygen amount, the heat smoke simultaneously produced directly enters boiler furnace, plays the effect of preboiler.The utility model is also openly provided with the boiler milling system of described cold air heating device.
Description
Technical field
The utility model relates to pulverized-coal fired boiler technical field, particularly the cold air heating device of pulverized-coal fired boiler pulverized coal preparation system.The utility model also relates to the boiler milling system being provided with described cold air heating device.
Background technology
When unit pulverized-coal system Boiler Using Plasma body ignition system or few-oil ignition system ignition trigger, need to carry out black furnace powder process, the hot blast source that coal pulverizer powder process needs has two kinds usually, i.e. the heat smoke that the hot-air of cold wind steam heater generation and cold wind fuel heater produce.
Cold wind steam-heating system is primarily of compositions such as cold wind steam heater, air doors, system architecture is fairly simple, cost is also lower, and cold wind steam heater can be arranged in stokehold hot blast mother pipe, furnace side hot blast female pipe, coal pulverizer inlet bypass air channel etc., and concrete arrangement is depending on actual conditions.
Cold wind fuel heating system is primarily of the composition such as heating air duct, elbow, oil burner supercharging wind system, oil supply system, combustion chamber image fire monitor probe and visible ray flame detecting probe containing oil burner, cold wind fuel heater can be arranged in coal pulverizer inlet hot-flow flue, coal pulverizer inlet hot-flow flue bypass air channel, coal pulverizer inlet cold air duct, cold wind bypasses etc., field condition needed for different arrangements is different.
Mandate publication number is the utility model patent " a kind of coal-fired fuel pulverizing plant of generating plant pulverized coal boiler " of CN201218515Y, and steam heater is arranged on the bypass duct of heat primary air pipeline by it, for coal pulverizer provides hot blast.
Mandate publication number is the utility model patent " a kind of coal for producing powder equipment of generating plant pulverized coal boiler " of CN201218516Y, which propose a kind of steam heater mounting arrangements mode, a steam heater is arranged on the female pipe of front wall hot blast, for one or more coal pulverizer provides hot blast.
These two kinds of fuel pulverizing plants are all adopt cold wind steam heater to heat First air, and cold wind steam heater is because adopting Steam Heating air, by vapo(u)rous temperature limiting, when as-fired coal moisture as received coal is greater than 25% (as brown coal etc.), cold wind steam heater can not meet the hot blast temperature required by coal pulverizer, and the application of cold wind steam heater is limited in such cases.
When the moisture as received coal of as-fired coal is greater than 25% (as brown coal etc.), the hot blast temperature adopting the mode of cold air heaters heating to obtain can not meet the requirement of coal pulverizer powder process drying capacity, need the mode adopting fuel Heating, and the flue gas that oil inflame produces directly is mixed in First air, the oxygen amount in First air can be reduced, be unfavorable for plasma burner or oil-minimum start-up burner firing coal-dust First air mixture, affect ignition results, and cold wind fuel heating system is also comparatively complicated, need space more, site layout project restriction may be subject to, owing to relating to the use of fuel oil, there is certain risk, also there are certain requirements with the security of oil.
In addition, when using plasma ignition system or few-oil ignition system carry out boiler cold-state igniting, by the restriction of coal pulverizer minimum load, the starting ignition initial stage can cause certain thermal shock to boiler furnace.
Utility model content
The purpose of this utility model is to provide a kind of cold air heating device.This cold air heating device is when using plasma ignition system or micro oil ignition system cold start coal pulverizer, for coal pulverizer provides powder process hot blast, the powder process requirement of each coal can be adapted to, do not affect First air oxygen amount, the heat smoke simultaneously produced directly enters boiler furnace, plays the effect of preboiler.
Another object of the present utility model is to provide a kind of boiler milling system being provided with described cold air heating device.
For achieving the above object, the utility model provides a kind of cold air heating device, comprising:
Coal-fired hot-blast stove;
Cool air hose, is communicated with the air inlet of described coal-fired hot-blast stove, is the female pipe blast pipe of heat primary air;
Warm-air pipe, is communicated with the air outlet of described coal-fired hot-blast stove, is the female pipe discharge pipe of the heat primary air leading to coal pulverizer;
Combustion-supporting airduct, draws from described warm-air pipe, is communicated with the combustion-supporting air port of described coal-fired hot-blast stove.
Preferably, also comprise smoke exhaust pipe, its one end is communicated with the exhanst gas outlet of described coal-fired hot-blast stove, and the other end leads to bottom boiler furnace and enters boiler.
Preferably, described combustion-supporting airduct is provided with combustion air control valve.
Preferably, also comprise feeder, connect with unit coal bunker, for fire coal is sent into described coal-fired hot-blast stove from fuel inlet.
Preferably, the dragveyer that coal-fired hot-blast stove and boiler share is comprised further.
Preferably, described coal hot-air furnace bottom side is located in described combustion-supporting air port.
Preferably, the cinder outlet of described coal-fired hot-blast stove is located at bottom it relative to the described opposite side stating combustion-supporting air port.
Preferably, described fuel inlet is located at the position of described coal-fired hot-blast stove side close to bottom.
Preferably, described exhanst gas outlet is located at the position of described coal-fired hot-blast stove opposite side close to top.
For realizing another object above-mentioned, the utility model also provides a kind of boiler milling system, and comprise coal pulverizer and provide the cold air heating device of hot blast for described coal pulverizer, described cold air heating device is the cold air heating device described in above-mentioned.
Cold air heating device provided by the utility model, can either avoid because as-fired coal moisture as received coal is too large and can not meet the requirement of coal pulverizer powder process drying capacity, can not reduce the oxygen content in First air again and affect ignition system fires; Preheating can be carried out to boiler simultaneously, reduce the thermal shock that ignition of the boiler initial stage boiler furnace is subject to.
Boiler milling system provided by the utility model is provided with described cold air heating device, and because described cold air heating device has above-mentioned technique effect, the boiler milling system being provided with this cold air heating device also should possess corresponding technique effect.
Accompanying drawing explanation
Fig. 1 provides by the utility model the structural representation of a kind of detailed description of the invention of cold air heating device.
In figure:
1. coal-fired hot-blast stove 2. cool air hose 3. warm-air pipe 4. combustion-supporting airduct 4-1. combustion air control valve 5. smoke exhaust pipe 6. boiler 7. feeder 8. boiler slag remover
Detailed description of the invention
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1, Fig. 1 provides by the utility model the structural representation of a kind of detailed description of the invention of cold air heating device.
In a kind of specific embodiment, cold air heating device provided by the utility model is primarily of compositions such as coal-fired hot-blast stove 1, cool air hose 2, warm-air pipe 3, combustion-supporting airduct 4, smoke exhaust pipe 5, feeder 7, boiler slag removers 8.
Coal-fired hot-blast stove 1 is a kind of is fuel with coal, adds the heat transmission equipment of hot-air, which is provided with fuel inlet, air inlet, air outlet, combustion-supporting air port, cinder outlet and exhanst gas outlet.
Wherein, side bottom coal-fired hot-blast stove 1 is located in combustion-supporting air port, cinder exports the opposite side be located at relative to combustion-supporting air port bottom coal-fired hot-blast stove 1, and fuel inlet is located at the position of coal-fired hot-blast stove 1 side close to bottom, and exhanst gas outlet is located at the position of coal-fired hot-blast stove 1 opposite side close to top.
Cool air hose 2 is communicated with the air inlet of coal-fired hot-blast stove 1, blast pipe as the female pipe of heat primary air uses, warm-air pipe 3 is communicated with the air outlet of coal-fired hot-blast stove 1, coal pulverizer (not shown) is led to as the female pipe discharge pipe of heat primary air, combustion-supporting airduct 4 is for drawing the branch road of self-heating airduct 3, the combustion-supporting air port of coal-fired hot-blast stove 1 is communicated with from warm-air pipe 3, one end of smoke exhaust pipe 5 is communicated with the exhanst gas outlet of coal-fired hot-blast stove 1, the other end leads to bottom boiler furnace and enters boiler 6, feeder 7 connects with unit coal bunker, for fire coal is sent into coal-fired hot-blast stove 1 from fuel inlet, boiler slag remover 8 is arranged on below boiler furnace, by coal-fired hot-blast stove 1 and boiler 6 are shared.
Its operation principle is as follows: feeder 7 connects with unit coal bunker, fire coal is sent in coal-fired hot-blast stove 1 and burn, the required combustion air of burning is drawn from removing the female pipe of the heat primary air of coal pulverizer, bottom coal-fired hot-blast stove 1, combustion air entrance enters and participates in burning, after burning, flue gas leads to boiler 6 burner hearth bottom from exhanst gas outlet, enter boiler 6, flue gas enters air through the smoke eliminator of boiler and chimney; The cinder that produces of burning directly drains into dragveyer 8, and First air enters after coal-fired hot-blast stove 1 is heated to powder process requirement hot blast temperature and enters coal pulverizer, after boiler successfully starts and reaches steady combustion state, and stoppage in transit coal-fired hot-blast stove 1.
Here, coal-fired hot-blast stove 1 regulates hot blast temperature by adjustment coal amount and combustion air, and its heat smoke produced that burns directly enters boiler 6, plays pre-heat effect to boiler 6.
This cold air heating device has temperature controlling function, the hot-air of 140 DEG C-420 DEG C can be provided continuously for one or multiple stage coal pulverizer, with cold wind steam heater, cold wind fuel heater etc. is compared, there is wind-warm syndrome high, easy to operate, the advantage such as safe and reliable, add the temperature range that heat primary air can reach wide, not by the restriction of as-fired coal moisture, the powder process requirement of arbitrary coal can be met, and, do not affect the oxygen content in First air, the heat smoke that burning produces directly enters boiler, pre-heat effect is played to boiler, the starting ignition initial stage is avoided to cause thermal shock to boiler furnace.
Above-described embodiment is only preferred version of the present utility model, is specifically not limited thereto, and can make pointed adjustment according to actual needs on this basis, thus obtain different embodiments.Such as, coal-fired hot-blast stove can be replaced to self-action fuel oil (combustion gas) indirect Air hot-blast furnace or other similar hot air apparatus having same effect, etc.Because mode in the cards is more, just illustrate no longer one by one here.
Except cold air heating device, the utility model also provides a kind of boiler milling system, and comprise coal pulverizer and provide the cold air heating device of hot blast for described coal pulverizer, described cold air heating device is cold air heating device mentioned above, all the other structures please refer to prior art, repeat no more herein.
Particularly, can be direct blow boiler pulverized coal preparation system.
Above cold air heating device provided by the utility model and boiler milling system are all described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (10)
1. a cold air heating device, is characterized in that, comprising:
Coal-fired hot-blast stove (1);
Cool air hose (2), is the female pipe blast pipe of heat primary air, is communicated with the air inlet of described coal-fired hot-blast stove (1);
Warm-air pipe (3), is the female pipe discharge pipe of the heat primary air leading to coal pulverizer, is communicated with the air outlet of described coal-fired hot-blast stove (1);
Combustion-supporting airduct (4), draws from described warm-air pipe (3), is communicated with the combustion-supporting air port of described coal-fired hot-blast stove (1).
2. cold air heating device according to claim 1, it is characterized in that, also comprise smoke exhaust pipe (5), its one end is communicated with the exhanst gas outlet of described coal-fired hot-blast stove (1), and the other end leads to bottom boiler furnace and enters boiler (6).
3. cold air heating device according to claim 1, is characterized in that, described combustion-supporting airduct (4) is provided with combustion air control valve (4-1).
4. cold air heating device according to claim 1, is characterized in that, also comprises feeder (7), connects with unit coal bunker, for fire coal is sent into described coal-fired hot-blast stove (1) from fuel inlet.
5. cold air heating device according to claim 1, is characterized in that, comprises the dragveyer (8) that coal-fired hot-blast stove (1) shares with boiler (6) further.
6. the cold air heating device according to any one of claim 1 to 5, is characterized in that, side, described coal-fired hot-blast stove (1) bottom is located in described combustion-supporting air port.
7. cold air heating device according to claim 6, is characterized in that, the cinder outlet of described coal-fired hot-blast stove (1) is located at bottom it relative to the described opposite side stating combustion-supporting air port.
8. the cold air heating device according to any one of claim 1 to 5, is characterized in that, described fuel inlet is located at the position of described coal-fired hot-blast stove (1) side close to bottom.
9. cold air heating device according to claim 8, is characterized in that, described exhanst gas outlet is located at the position of described coal-fired hot-blast stove (1) opposite side close to top.
10. a boiler milling system, comprise coal pulverizer and provide the cold air heating device of hot blast for described coal pulverizer, it is characterized in that, described cold air heating device is the cold air heating device described in any one of the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221329.0U CN204513437U (en) | 2015-04-13 | 2015-04-13 | A kind of cold air heating device and boiler milling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221329.0U CN204513437U (en) | 2015-04-13 | 2015-04-13 | A kind of cold air heating device and boiler milling system |
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| Publication Number | Publication Date |
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| CN204513437U true CN204513437U (en) | 2015-07-29 |
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| CN201520221329.0U Active CN204513437U (en) | 2015-04-13 | 2015-04-13 | A kind of cold air heating device and boiler milling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847621A (en) * | 2021-10-22 | 2021-12-28 | 西安热工研究院有限公司 | Cold-state starting system and method for boiler |
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2015
- 2015-04-13 CN CN201520221329.0U patent/CN204513437U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847621A (en) * | 2021-10-22 | 2021-12-28 | 西安热工研究院有限公司 | Cold-state starting system and method for boiler |
| CN113847621B (en) * | 2021-10-22 | 2024-02-27 | 西安热工研究院有限公司 | Cold start system and method for boiler |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |