CN2921600Y

CN2921600Y - Smokeless coal-saving large mechanical grating heat conducting oil furnace

Info

Publication number: CN2921600Y
Application number: CN 200620086353
Authority: CN
Inventors: 王树洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-29
Filing date: 2006-06-29
Publication date: 2007-07-11
Anticipated expiration: 2016-06-29

Abstract

The utility model relates to a smokeless coal-saving large mechanical grating heat conducting oil furnace having a heating zone and a hot gas supplying zone, wherein, the furnace body of the heating zone is provided with an endothermic tube bundle; the bottom of the heating zone is provided with a hot gas inlet; the top of the heating zone is provided with an induced draft fan; the hot gas supplying zone is provided with a coal-burning device having a burning furnace, a mechanical grate and a high temperature gas outlet; the high temperature gas outlet is positioned in front of a back furnace arch, and correspondingly arranged with the hot gas inlet of the heating zone; the furnace comprises an upper furnace and a lower furnace which are interlinked; the cross section of the furnace shows two R-shaped structures with bilateral symmetry; the lower furnaces of two R-shaped furnaces are interlinked; the furnace sidewall is provided with a combustion-supporting tuyere open into the upper furnace; the combustion-supporting tuyere is tangent to the arc arch of the furnace top; the rear of the furnace is the high temperature gas outlet. The utility model is simple in structure, low in cost and easy for operation, and thoroughly solves the problem of the black smoke from burning coal, which saves coal resources and protects environment.

Description

Smokeless, coal saving type heat transfer oil stove with large mechanical fire grate

Technical field

The utility model relates to a kind of improved smokeless, coal saving type heat transfer oil stove with large mechanical fire grate.

Background technology

Heat-conducting oil furnace also claims boiler of organic heat carrier, is a kind of novel industrial boiler that just develops rise recent years.Conduction oil series boiler plant because volume is little, is installed and flexible arrangement, and operating cost is low, receives praises from customers, and market prospects are wide.

The thermal energy transfer of heat-conducting oil furnace and the form of circulation are to be medium with the conduction oil, utilize oil circulating pump to force conduction oil to carry out the liquid phase circulation, heat energy is flowed to the hot equipment of using by pipeline, conduction oil after overheated transmission cooling is got back to heating furnace by Returning pipe again and is reheated, and forms closed cycle.

Owing to use oil as heat transfer medium, can under lower pressure, obtain higher operating temperature (about 300 ℃), can control temperature accurately, need not water resource and water treatment facilities, service condition there is not harsh demand, can accurately control temperature, and simple structure, the maintenance and move very convenient, be a kind of safety coefficient than higher heating equipment, be widely used in industries such as weaving, printing and dyeing, food processing, paint coating, chemical industry equipment, materials for construction, artificial leather, wood-based plate, papermaking, timber production.

Heat-conducting oil furnace, the overwhelming majority is a fuel with the coal, has only only a few natural gas fuel, liquefied petroleum gas, light diesel under specific condition, because the petroleum fuel problem of ultra-high price, most of user still is that multiselect is made fuel with fire coal.All there is the sufficient inadequately problem of fired coal combustion basically in existing heat-conducting oil furnace coal-burning installation, the black smoke discharging is serious, (comprise chain furnace grate for some large-scale stoker fired grates, reciprocating fire grate etc.) coal-fired utility, situation is a little better, the discharging flue gas also is grey or grey black look, cause environmental pollution on the one hand, what exist on the other hand is the serious waste of the energy, the large-scale coal-burning installation of combustion power more than 2.8MW, coal consumption are 6-20 ton/24 hour, even more, coal consumption is quite big, coal-fired flue-gas pollutes quite serious, and the coal resource waste also is quite surprising, has seriously restricted the smooth implementation of environmental protection and energy saving societies.

The utility model content

The purpose of this utility model is to provide a kind of smokeless, coal saving type heat transfer oil stove with large mechanical fire grate, can solve coal-fired over-emitting black exhaust problem, saves coal resource, the protection environment.

Smokeless, coal saving type heat transfer oil stove with large mechanical fire grate described in the utility model has the thermal treatment zone and hot gas supply area, equipped heat absorption tube bank in the body of heater of the thermal treatment zone, and bottom, the thermal treatment zone is provided with the hot gas import, and the top of the thermal treatment zone is fitted with air-introduced machine; The hot gas supply area has coal-burning installation, coal-burning installation has burner hearth, stoker fired grate, coal supply apparatus and high-temperature gas outlet, the high-temperature gas outlet is positioned at chimney arch front, back, high-temperature gas outlet and the corresponding setting of the hot gas import of the thermal treatment zone, its burner hearth divides upper furnace and lower hearth, last lower hearth communicates, the burner hearth cross section is two symmetrical R shape structures, the lower hearth of two R shape burner hearths communicates, burner hearth sidewall is fitted with the combustion-supporting air port of leading to upper furnace, the arc arch at combustion-supporting air port and upper furnace top is tangent, and the rear portion of burner hearth is the high-temperature gas outlet.

Under coal-fired operation at stoker fired grate drives, be transported to burner hearth preheating zone and combustion zone successively, in the preheating zone, fugitive constituent in the fire coal begins to separate out and burn, after entering the combustion zone, remaining fugitive constituent continues to separate out fast burning, fugitive constituent and flammable dust form flue gas, upwards pour in the swirl flow combustion zone of roof of the furnace together, form the rotation type air current burning, the burner hearth sidewall combustion air combustion-supporting down, burning gases and combustion air mix stirring, and quicken the rotation reinforcement simultaneously and mix, and quick fierce burning produces a large amount of heat energy, fire box temperature is raise fast, promoted the condition of effect of combustion and elimination flue dust more.When combustion mixture stream reaches the exit at burner hearth rear portion, orderly gas cyclone by export expansion, fill the air, form the high temperature turbulent area, collide mutually between all gases, tear and turn round, be ground into some irregular gas whirlpools, be full of whole high temperature turbulent area, burning is peaked, form the high-temperature region of burner hearth, become coke along with fugitive constituent consumes substantially, the coke of necessary process high temperature ability after-flame is at the further after-flame in this high-temperature region.Self rising power of combustion-gas flow, in conjunction with the power of air-introduced machine, the negative pressure that forms in the thermal treatment zone makes the combustion-gas flow bending upwards; along with burning, rush in the thermal treatment zone, with the thorough in the lump after-flame of all combustibles; flue gas will not exist; lingemann blackness is false, and traditional smoke-discharging pollution and burning energy waste not to the utmost are solved, and do not have black smoke or grey cigarette; has only pure, clean, colourless, tasteless hot gas; save resource, protected environment, improved the thermal efficiency.The two pass burning, burning capacity is big, satisfies the requirement of large-scale heat-conducting oil furnace.

Clean clean red-hot air-flow and in the thermal treatment zone of body of heater, carry out heat exchange with the heat absorption tube bank, the intrafascicular conduction oil of endothermic tube is heated, provide power that heat energy is sent in streams to a place with on the hot equipment by the work oil pump, conduction oil after the release heat returns heat-conducting oil furnace by oil returning tube, reheated, formed closed cycle.

Burner hearth sidewall is equipped with the combustion-supporting air channel of leading to upper furnace along two pins of R shape, and it is more abundant to burn.

Burner hearth sidewall is provided with the combustion-supporting air channel of leading to lower hearth along the pin of R shape, further promotes burning preferably to be equipped with the combustion-supporting air channel of leading to lower hearth along two pins.

So-called R shape also can be anti-R shape, can form clockwise eddy flow burning and counterclockwise swirl flow combustion respectively.

Cross section is the also just approximate pictograph of R shape structure to be described, can there be distortion to a certain degree to develop, as two pins of R shape can be that symmetry tilts, and can set up the combustion-supporting air channel of leading to lower hearth along two inclination pins, and the cross section of vortex furnace can be rounded or ellipse etc., burner hearth can be positioned at the middle part of body of heater, especially during symmetrical structure, generally be positioned at the middle part, at this moment, R shape structure will develop into approximate Ω shape, or the like.

In practice, the longitudinal length and the transverse width of body of heater is set as required, when the longitudinal length of body of heater was big, combustion-supporting air channel can distribute on longitudinal length and be provided with severally, guarantees fully to burn.

For large-scale coal-burning installation, in order to strengthen structural strength, can in coal-burning installation, set up supporting rib, increase the circulation cooling duct again near being preferably in supporting rib, logical recirculated cooling water avoids the temperature of supporting rib too high, guarantees safe and reliable to operation.

With existing smokeless, coal saving type heat transfer oil stove with large mechanical fire grate, just coal-burning installation partly to be improved, other parts can be continued to use original structure fully, therefore, can directly carry out scene transformation to existing similar machines fire grate heat-conducting oil furnace.

The utility model smokeless, coal saving type heat transfer oil stove with large mechanical fire grate; simple in structure, cheap, implement easily; thoroughly solved coal-fired over-emitting black exhaust problem; the waste gas water white transparency of discharging, clean, pollution-free has reached pure smokeless effect, and lingemann blackness is 0; difference according to ature of coal can be saved coal-fired 30%-40%; both saved coal resource, protected environment again, economic benefit and obvious social benefit.

Description of drawings

Fig. 1, the utility model one example structure schematic diagram.

The A-A cross-sectional structure schematic diagram of coal-burning installation 16 among Fig. 2, Fig. 1.

Among the figure: 1, body of

heater

2,3, heat absorption tube bank 4, air-introduced machine connects the mouth of pipe 5, hot gas import 6, high-temperature gas outlet 7, back chimney arch 8, chain furnace grate 9, chain drum 10, lime-ash outlet 11, following coal flashboard 12, coal bunker 13, combustion-supporting air port 14, following coal flashboard lifting wheel 15, combustion-supporting air port 16, coal-burning

installation

17,18,22,23, combustion-supporting air channel 19, circulation cooling duct 20, supporting steelframe 21, channel partition F1, F2, F3, F4, F5, combustion air.

The specific embodiment

Below in conjunction with the embodiment accompanying drawing the utility model is further described.

As depicted in figs. 1 and 2, smokeless, coal saving type heat transfer oil stove with large mechanical fire grate described in the utility model, the thermal treatment zone and hot gas supply area are arranged, equipped heat

absorption tube bank

2,3 in the body of heater of the thermal treatment zone, bottom, the thermal treatment zone is provided with hot gas import 5, and the top of the thermal treatment zone connects the mouth of pipe 4 equipped air-introduced machines by air-introduced machine; The hot gas supply area has coal-burning installation, coal-burning installation has burner hearth, chain furnace grate 8, coal supply apparatus and high-temperature gas outlet 6, high-temperature gas outlet 6 is positioned at chimney arch 7 fronts, back, the hot gas import 5 corresponding settings of high-temperature gas outlet 6 and the thermal treatment zone, coal supply apparatus is by coal bunker 12, following coal flashboard 11 and following coal flashboard lifting wheel 14 are formed, burner hearth divides upper furnace and lower hearth, last lower hearth communicates, the burner hearth cross section is two symmetrical R shape structures, the lower hearth of two R shape burner hearths communicates, burner hearth sidewall is fitted with the combustion-supporting air port 15 of leading to upper furnace, 18, combustion-supporting

air port

15,18 is tangent with the arc arch at upper furnace top, burner hearth sidewall is provided with the combustion-supporting air channel 23 of leading to lower hearth along the pin of R shape, and introducing can be concentrated in middle combustion-supporting air channel, and the rear portion of burner hearth is high-temperature gas outlet 6.There is anti-slag grey iron block chain fire-gate both sides, also claim the sealing iron block, are used for the both sides of sealed chain fire grate to prevent to leak out and leaks coal, and the lime-ash that also prevents molten state simultaneously sticks in and forms slag nodule on the inboard wall of burner hearth, and influence normally moves.

Have additional supporting steelframe 20 in coal-burning installation, supporting is provided with circulation cooling duct 19 near the steelframe 20, feeds cooling water in circulation cooling duct 19, and the temperature that prevents to support places such as steelframe 20 is too high, influences bearing strength.

Running:

Under coal-fired operation at the chain-type stoker fired grate drives, from left to right be transported to burner hearth preheating zone and combustion zone successively, in the preheating zone, fugitive constituent in the fire coal begins to separate out and burn, after entering the combustion zone, remaining fugitive constituent continues to separate out fast burning, fugitive constituent and flammable dust form flue gas, upwards pour in the swirl flow combustion zone of roof of the furnace together, the burning of formation rotation type air current, in the combustion-supporting air channel 17 of burner hearth sidewall, 18,22,23 combustion airs that provide are combustion-supporting down, burning gases and combustion air mix stirring, and quicken the rotation reinforcement simultaneously and mix, and quick fierce burning produces a large amount of heat energy, fire box temperature is raise fast, promoted the condition of effect of combustion and elimination flue dust more.When the high-temperature gas that combustion mixture stream reaches the burner hearth rear portion exports 6 places, orderly gas cyclone by export expansion, fill the air, and two-way mixes, and forms the high temperature turbulent area, collides mutually between all gases, tears and turn round, be ground into some irregular gas whirlpools, be full of whole high temperature turbulent area, burning is peaked, form the high-temperature region of burner hearth, become coke along with fugitive constituent consumes substantially, the coke of necessary process high temperature ability after-flame is at the further after-flame in this high-temperature region.Self rising power of combustion-gas flow, in conjunction with the power of air-introduced machine, the negative pressure that forms in the thermal treatment zone makes the combustion-gas flow bending upwards, along with burning, rushes in the thermal treatment zone, and with all combustibles thorough after-flame in the lump, clean white lime-ash is discharged from lime-ash outlet 10.Clean clean red-hot air-flow and carry out heat exchange with heat

absorption tube bank

2,3 respectively, the heat-conducting oil heating that endothermic tube is intrafascicular, provide power that heat energy is sent in streams to a place with on the hot equipment by the work oil pump, conduction oil after the release heat returns heat-conducting oil furnace by oil returning tube, reheated, formed closed cycle.

Cloth wind box can be passed through in each combustion-supporting air channel, realizes that as required cloth wind distributes, and provides cloth pneumatic power by same power source, simplifies auxiliary equipment.

Air feed system can be equipped with the automation frequency-changing control system, realizes automation mechanized operation.Mode as the available frequency control of adjusting of wind supply quantity solves, that is changes the method control wind supply quantity of the rotating speed of blower fan by the frequency that changes fan power.Utilize flue gas sensor (the industrial electronic retail department all has commercially available), as zirconium dioxide flue gas sensor, it presents " gas sensitive effect " to carbon monoxide, as long as it is exactly anoxic that flue gas is arranged, as long as anoxic just certainly leads to carbon monoxide, so the content of detection CO gas how much, also just directly reflected " air distribution coefficient " and the combustion conditions of combustion apparatus inside.The content of CO gas is become on the voltage signal input terminal that voltage signal is input to frequency converter, can utilize the voltage signal controlled frequency to change, the frequency conversion out-put supply is exactly the power supply of air blast.

Claims

1, a kind of smokeless, coal saving type heat transfer oil stove with large mechanical fire grate has the thermal treatment zone and hot gas supply area, equipped heat absorption tube bank in the body of heater of the thermal treatment zone, and bottom, the thermal treatment zone is provided with the hot gas import, and the top of the thermal treatment zone is fitted with air-introduced machine; The hot gas supply area has coal-burning installation, coal-burning installation has burner hearth, stoker fired grate, coal supply apparatus and high-temperature gas outlet, the high-temperature gas outlet is positioned at chimney arch front, back, high-temperature gas outlet and the corresponding setting of the hot gas import of the thermal treatment zone, it is characterized in that burner hearth divides upper furnace and lower hearth, last lower hearth communicates, the burner hearth cross section is two symmetrical R shape structures, the lower hearth of two R shape burner hearths communicates, burner hearth sidewall is fitted with the combustion-supporting air port of leading to upper furnace, the arc arch at combustion-supporting air port and upper furnace top is tangent, and the rear portion of burner hearth is the high-temperature gas outlet.

2, smokeless, coal saving type heat transfer oil stove with large mechanical fire grate according to claim 1 is characterized in that burner hearth sidewall is equipped with the combustion-supporting air channel of leading to upper furnace along two pins of R shape.

3, smokeless, coal saving type heat transfer oil stove with large mechanical fire grate according to claim 1 and 2 is characterized in that burner hearth sidewall is provided with the combustion-supporting air channel of leading to lower hearth along the pin of R shape.

4, smokeless, coal saving type heat transfer oil stove with large mechanical fire grate according to claim 3, the sidewall that it is characterized in that burner hearth is equipped with the combustion-supporting air channel of leading to lower hearth along two pins of R shape.

5, smokeless, coal saving type heat transfer oil stove with large mechanical fire grate according to claim 4 is characterized in that having additional supporting rib in the coal-burning installation, is provided with the circulation cooling duct near the supporting rib.