CN2212169Y - Multiple wind-temp coal burning hot-wind stove - Google Patents
Multiple wind-temp coal burning hot-wind stove Download PDFInfo
- Publication number
- CN2212169Y CN2212169Y CN 95201622 CN95201622U CN2212169Y CN 2212169 Y CN2212169 Y CN 2212169Y CN 95201622 CN95201622 CN 95201622 CN 95201622 U CN95201622 U CN 95201622U CN 2212169 Y CN2212169 Y CN 2212169Y
- Authority
- CN
- China
- Prior art keywords
- air
- hot
- stove
- fume
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a hot-air stove which adopts a horizontal structure. The lower part of the hot-wind stove is provided with a grate and a furnace chamber for the combustion of the fuel, and the upper part is provided with a heat exchanger. The fume carries out the heat exchange with the cold air through a flue. The heat exchanger is composed of a fume pipe, a front tube plate, a back tube plate, a middle tube plate, a deflection fume box, an air inlet, air outlets and a frame. The middle tube plate makes the air divided into a plurality of channels, and each air outlet supplies one kind of hot air with a certain temperature. In order to improve the heat resistance of the metal in high-temperature zone, the front tube plate and the fume tube in the high temperature zone are carried out the calorizing, and the expansion of the fume tube is compensated by expansion joints. The heating surface of the hot-air stove is made of carbon steel.
Description
The utility model relates to a kind of hot-blast stove, specifically a kind of drying hot-blast stove that is used for dry certain material.
At present, the technology that is used for the cereal drying mainly contains high temperature drying, high temperature tempering drying, low temperature drying, high temperature-low temperature combination drying, dry and wet grain combination drying etc.Wherein, concurrent drying, adverse current process for cooling in the high temperature tempering drying have higher productivity, and hear rate is lower, can dry high water content grain, can guarantee grain quality, is used widely.But in multistage concurrent drying technology, each concurrent drying section need be used the hot blast of different temperatures, and for this reason, the drying machine thermal source has two kinds of configuration modes:
1, with many low profile thermal wind furnaces, every hot-blast stove is supplied a kind of hot blast of temperature, the dryer system complexity of this configuration mode, and the hot-blast stove thermal efficiency is lower, and operator's labour intensity is bigger, operation maintenance complexity, cost height.
2, produce high-temperature hot-air with a big heating load hot-blast stove, hot blast is divided into several branch roads, mix cold wind, obtain the hot blast of different temperatures with this to each branch road in the hot air furnace hot air outlet.In this method, though the hot-blast stove thermal efficiency increases, operator's labour intensity reduces, for mixing cold wind, need in each branch road, air-introduced machine to be set, power consumption is increased, regulate difficulty, and because the air of hot-blast stove is in negative pressure, flue gas might bleed in the air, influence the hot blast quality, this system (particularly cold wind mixes mouth) is still complicated simultaneously, and cost is higher.
The purpose of this utility model is a kind of hot-blast stove that the various temperature hot blast can be provided simultaneously of design, simplify dryer system, improve the hot-blast stove thermal efficiency, this hot-blast stove is sent cold wind into hot-blast stove with air blast, the hot-blast stove air side is in barotropic state, flue gas can not bleed in the air, guarantees the hot blast cleaning, reduces drying machine heat source system total cost.Further improve hot-blast stove functional reliability and service life.
This hot-blast stove adopts horizontal type structure, and the bottom is the stoker fired grate 1 and the burner hearth 2 of fuel combustion, and top is for passing to flue gas heat on the heat exchanger of air.
Heat exchanger is by smoke pipe 6, front tube sheet 7, back tube sheet 8, middle tube sheet 9, the smoke box 10 of turning back, air inlet 11, air outlet 12 and heat exchanger framework 13 constitute, wherein a plurality of air inlets 11 and a plurality of air outlet are along flow of flue gas direction horizontally set, and smoke pipe 6 vertically is provided with along the flow of flue gas direction, and the smoke box 10 of turning back connects first backhaul and second backhaul of smoke pipe 6.
The high-temperature flue gas that flows out from stove hall 2 vertically flows in first backhaul of smoke pipe 6, parallel baffled in the smoke box 10 of turning back enters second backhaul of smoke pipe 6, and along flue gas flow direction, velocity of flue gas reduces gradually.Air enters heat exchanger from air inlet 11, lateral flow outside smoke pipe 6, and flue gas is by smoke pipe and cold air heat exchange.Air themperature raises gradually.
When air enters each air inlet, temperature is identical, but in heat exchanger, the cold air that enters from different air inlets carries out heat exchange with the flue gas of different cigarette temperature, and the heat transfer temperature and pressure of the place that the cigarette temperature is high (near front tube sheet 7) flue gas and air are big, velocity of flue gas is big, make the fume side exothermic coefficient big, the heat transfer coefficient height is when heating surface area is identical, the air caloric receptivity is many, the outlet air temperature height, and the heat transfer temperature and pressure of the low place of cigarette temperature (near back tube sheet 8) flue gas and air are little, compare with the place that the cigarette temperature is high, velocity of flue gas is little, make the fume side exothermic coefficient little, heat transfer coefficient is low, when heating surface area is identical, the air caloric receptivity is few, and outlet air temperature is low.Like this, though air themperature is identical when entering hot-blast stove, the air themperature of coming out from hot-blast stove is different, reaches the purpose that windy warm wind is provided with a hot-blast stove.
This hot-blast stove can provide various temperature cleaning hot blast simultaneously, the hot-blast stove thermal efficiency, functional reliability are higher, this hot-blast stove with require the different temperatures hot blast as the supporting use of the drying machine of thermal source, simplified dryer system, assurance hot blast cleaning reduces drying machine heat source system total cost.Further improve hot-blast stove functional reliability and service life.For providing efficient, energy-conservation, reliable thermal source, grain department guarantees.
Technical indicator: rated heating capacity 0.7MW(60 * 10
4Kcal/h)
1.4MW（120×10
4kcal／h）
2.8MW（240×10
4kcal／h）
3.6MW（360×10
4kcal／h）
10MW（600×10
4kcal／h）
100 ℃～240 ℃ of hot blast temperatures
The thermal efficiency 〉=72%
The extent of spreading amd application: grain depot, grain factory, feed factory, seed stations are used for the oven dry of grain, feed, seed.
Fig. 1 is the front section view of this hot-blast stove;
Fig. 2 is the vertical view of this hot-blast stove.
Embodiment:
An example of the windy temperature coal-fired hot-blast stove of the utility model is as follows, in burner hearth 2 heating surface is not set, but is provided with height and short face arch 3 and low and long rear arch 4 in burner hearth, front and back are encircleed total coverage rate and are reached 70%, furnace wall 5 all adopts brickwork construction, and chimney arch 3,4 usefulness refractory concretes are built.Heating surface does not directly contact flame, and flue gas is by smoke pipe and cold air heat exchange.
Heat exchanger is by smoke pipe 6, front tube sheet 7, back tube sheet 8, middle tube sheet 9, the smoke box 10 of turning back, air inlet 11, air outlet 12, heat exchanger framework 13 constitutes, each air outlet is confessed a kind of hot blast of temperature, the smoke pipe two ends respectively with front tube sheet 7, back tube sheet 8 welding, front tube sheet 7 and the smoke pipe that is in the high-temperature region carry out aluminising to be handled, to improve its heat resistance, front tube sheet 7, middle tube sheet 9, the smoke box 10 of turning back, air inlet 11, air outlet 12 all welds with heat exchanger framework 13,13 of back tube sheet 8 and heat exchanger frameworks can relatively move, with the expansion joint sealing, compensate the expansion of smoke pipe simultaneously.The hot-blast stove heating surface is made of carbon steel.
High-temperature flue gas vertically flows in smoke pipe, and air is lateral flow outside pipe, and flue gas is by smoke pipe and cold air heat exchange.
Claims (1)
1, a kind of windy temperature coal-fired hot-blast stove comprises stoker fired grate [1], burner hearth [2] and heat exchanger, it is characterized in that heat exchanger is by smoke pipe [6], front tube sheet [7], back tube sheet [8], middle tube sheet [9], the smoke box [10] of turning back, air inlet [11], air outlet [12] and heat exchanger framework [13] constitute, and wherein a plurality of air inlets [11] and a plurality of air outlet [12] are along flow of flue gas direction horizontally set, smoke pipe [6] vertically is provided with along the flow of flue gas direction, and the smoke box of turning back [10] connects first backhaul and second backhaul of smoke pipe [6].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95201622 CN2212169Y (en) | 1995-01-11 | 1995-01-11 | Multiple wind-temp coal burning hot-wind stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95201622 CN2212169Y (en) | 1995-01-11 | 1995-01-11 | Multiple wind-temp coal burning hot-wind stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212169Y true CN2212169Y (en) | 1995-11-08 |
Family
ID=33855008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95201622 Expired - Fee Related CN2212169Y (en) | 1995-01-11 | 1995-01-11 | Multiple wind-temp coal burning hot-wind stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212169Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841348A (en) * | 2016-05-31 | 2016-08-10 | 贵州大学 | Adjustable combined heat exchanger air heating furnace and working method thereof |
| CN110940090A (en) * | 2019-12-20 | 2020-03-31 | 济南伊斯达自控工程有限公司 | Efficient energy-saving multi-temperature stepped hot air system |
| CN111473517A (en) * | 2020-04-16 | 2020-07-31 | 吉林市安瑞克能源科技开发有限公司 | Adjustable tube bundle type heat exchanger, drying tower heat exchange adjusting system and method |
-
1995
- 1995-01-11 CN CN 95201622 patent/CN2212169Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841348A (en) * | 2016-05-31 | 2016-08-10 | 贵州大学 | Adjustable combined heat exchanger air heating furnace and working method thereof |
| CN110940090A (en) * | 2019-12-20 | 2020-03-31 | 济南伊斯达自控工程有限公司 | Efficient energy-saving multi-temperature stepped hot air system |
| CN111473517A (en) * | 2020-04-16 | 2020-07-31 | 吉林市安瑞克能源科技开发有限公司 | Adjustable tube bundle type heat exchanger, drying tower heat exchange adjusting system and method |
| CN111473517B (en) * | 2020-04-16 | 2022-04-15 | 吉林市安瑞克能源科技开发有限公司 | Adjustable tube bundle type heat exchanger, drying tower heat exchange adjusting system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |