CN112709982A - High-efficiency energy-saving gasification combustion hot-blast stove - Google Patents

High-efficiency energy-saving gasification combustion hot-blast stove Download PDF

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Publication number
CN112709982A
CN112709982A CN202110133687.6A CN202110133687A CN112709982A CN 112709982 A CN112709982 A CN 112709982A CN 202110133687 A CN202110133687 A CN 202110133687A CN 112709982 A CN112709982 A CN 112709982A
Authority
CN
China
Prior art keywords
combustion chamber
heat exchange
air
gasification
combustion
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.)
Pending
Application number
CN202110133687.6A
Other languages
Chinese (zh)
Inventor
魏广廷
魏泓
魏杰
赵蕊
周泽艳
王鹤笛
赵利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chifeng Hongshan Shenghuo Biomass Energy Technology Development Co ltd
Original Assignee
Chifeng Hongshan Shenghuo Biomass Energy Technology Development Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chifeng Hongshan Shenghuo Biomass Energy Technology Development Co ltd filed Critical Chifeng Hongshan Shenghuo Biomass Energy Technology Development Co ltd
Priority to CN202110133687.6A priority Critical patent/CN112709982A/en
Publication of CN112709982A publication Critical patent/CN112709982A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B90/00Combustion methods not related to a particular type of apparatus
    • F23B90/04Combustion methods not related to a particular type of apparatus including secondary combustion
    • F23B90/06Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00Air heaters
    • F24H3/02Air heaters with forced circulation
    • F24H3/06Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/088Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using solid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates or heating means
    • F24H9/1854Arrangement or mounting of grates or heating means for air heaters

Abstract

The invention discloses a high-efficiency energy-saving gasification combustion hot blast stove, which comprises a combustion part and a heat exchange part, wherein the combustion part comprises a main combustion chamber, a plurality of gasification combustion chambers are annularly arranged around the main combustion chamber, the middle lower part of each gasification combustion chamber is provided with a fire passing pipe communicated with the main combustion chamber, and combustion hot air cavities are arranged around the main combustion chamber, the gasification combustion chambers and the fire passing pipes; the heat exchange part comprises a heat exchange combustion chamber positioned at the upper part of the main combustion chamber, and three layers of barrel sleeves are sequentially arranged on the periphery of the heat exchange combustion chamber from inside to outside to form two layers of annular heat exchange air cavities and one layer of annular smoke cavity; the lower part of the outer layer heat exchange air cavity is provided with a second air inlet, the lower part of the inner layer heat exchange air cavity is provided with a second air outlet, and the lower part of the smoke cavity is provided with a smoke outlet. The novel energy-saving boiler has the characteristics of reasonable structure, convenience in use, full combustion, high heat exchange efficiency, small smoke emission pollution and suitability for various fuels.

Description

High-efficiency energy-saving gasification combustion hot-blast stove
Technical Field
The invention belongs to the technical field of hot blast stoves, and particularly relates to a high-efficiency energy-saving gasification combustion hot blast stove.
Background
The hot blast stove has wide application in production and life of people, the working mode is heat released by fuel combustion, air is heated by high-temperature flue gas, so that the temperature of the air reaches the use standard, and the hot blast stove is used in the fields of life heating, industrial production, thermocuring, grain drying and the like. The hot blast stove is mainly divided into an internal combustion type, an external combustion type and a top combustion type, the overall structure of the hot blast stove can be divided into two parts, one part is a combustion part and is a fuel combustion heat production part, the other part is a heat exchange part and is a structural device for carrying out heat exchange between heat carried by high-temperature gas generated by a combustion chamber and external fresh air, and the fresh air at the external lower temperature is heated and heated to form hot air after being subjected to heat exchange with high-temperature flue gas generated in the combustion chamber in a heat exchanger.
At present, hot blast stoves are also the main problems of most hot blast stoves in two aspects, namely, coal or biomass fuel is directly combusted in a combustion chamber to generate smoke and fire, the smoke and fire enter a heat exchanger, the fuel cannot be fully combusted, the heat value of the fuel cannot be fully utilized, and the smoke emission pollution is serious; on the other hand, the heat exchange area of the heat exchange part is small, the heat exchange efficiency is low, the temperature of the flue gas exhausted from the flue is high, and the heat is not fully absorbed and utilized.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an efficient energy-saving gasification combustion hot blast stove which has the characteristics of reasonable structure, convenience in use, full combustion, high heat exchange efficiency, low smoke emission pollution and suitability for various fuels.
The technical scheme of the invention is as follows: the utility model provides an energy-efficient gasification burning hot-blast furnace, it includes combustion section and heat transfer part, its characterized in that: the combustion part comprises a furnace shell consisting of a furnace table surface and a furnace cylinder wall, a main combustion chamber with the upper end higher than the furnace table surface is arranged in the middle of the furnace shell, a plurality of gasification combustion chambers are annularly arranged around the main combustion chamber in the furnace shell, a fire tube communicated with the main combustion chamber is arranged at the middle lower part of each gasification combustion chamber, outer sleeve layers are arranged around the main combustion chamber, the gasification combustion chambers and the fire tube, mutually communicated combustion hot air cavities are formed among the outer sleeve layers, the main combustion chamber, the gasification combustion chambers and the outer wall of the fire tube, an annular air supply channel is arranged on the furnace cylinder wall, an air supply pipe communicated with the air supply channel and the combustion hot air cavities is arranged at the corresponding position of each gasification combustion chamber, a first air inlet is arranged at the outer side of the air supply channel, and a first air outlet communicated with the combustion hot air cavities is arranged at the upper part of the main combustion chamber; the heat exchange part comprises a heat exchange combustion chamber positioned on the upper part of the main combustion chamber, a first barrel sleeve, a second barrel sleeve and a third barrel sleeve are sequentially arranged on the periphery of the heat exchange combustion chamber from inside to outside, an annular inner layer heat exchange air cavity is formed between the heat exchange combustion chamber and the first barrel sleeve, an annular outer layer heat exchange air cavity is formed between the second barrel sleeve and the third barrel sleeve, an annular smoke cavity is formed between the first barrel sleeve and the second barrel sleeve, a smoke passing pipe communicated with the smoke cavity is arranged on the upper part of the heat exchange combustion chamber, a wind passing pipe communicated with the outer layer heat exchange air cavity is arranged on the upper part of the inner layer heat exchange air cavity, a second air inlet is arranged on the lower part of the outer layer heat exchange air cavity, a second air outlet is arranged on the lower part of the inner layer heat exchange air cavity, and a smoke outlet is arranged.
Furthermore, one or more oxygen supply and distribution pipes communicated to the outside of the furnace shell are arranged at the bottom of the main combustion chamber. The beneficial effect of adopting this further scheme is, can increase the oxygen supply volume of burning the combustion chamber, the oxygen suppliment is sufficient, and the fuel burning is more abundant, and the increasing heat efficiency reduces the fume emission pollution.
Furthermore, an ash discharge port is arranged at the bottom of the main combustion chamber, a turning plate type furnace bottom is arranged on the ash discharge port, and an operating rod extending out of the furnace shell is arranged on the turning plate type furnace bottom. The further proposal has the advantages of adjusting the oxygen supply amount of the main combustion chamber and facilitating the discharge of the soot.
Furthermore, a grate is arranged at the lower part of the gasification combustion chamber, an ash beating device is arranged below the grate, the ash beating device comprises an ash beating rotating shaft extending out of the furnace shell, and a plurality of ash beating claws corresponding to ash leaking strip holes of the grate are connected to the ash beating rotating shaft. The further proposal has the advantages of conveniently removing slag and ash accumulated on the grate, improving the ventilation of the grate and being beneficial to the gasification combustion of fuel in the gasification combustion chamber.
Furthermore, an air deflector is arranged on the outer wall of the gasification combustion chamber. The beneficial effect who adopts this further scheme is that, water conservancy diversion air supply flow direction for the air current is at hot blast intracavity evenly distributed of burning, improves the heat transfer effect.
Furthermore, heat exchange fins are arranged on the outer sides of the heat exchange combustion chamber, the first barrel sleeve and the second barrel sleeve. The heat exchange area is increased, and the heat exchange effect is improved.
Furthermore, the upper part of each gasification combustion chamber is provided with a heightened fuel bin and a fuel bin cover. The beneficial effect of adopting this further scheme is that, can once add more fuel, it is more convenient to use.
Furthermore, the first air inlet and the second air inlet are connected with an air blower through a three-way air pipe, and the smoke outlet is communicated with an induced draft fan.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention is composed of a combustion part and a heat exchange part, which are two relatively independent parts, and is convenient for processing, manufacturing and transportation.
(2) The combustion part of the invention comprises a main combustion chamber and a plurality of gasification combustion chambers annularly arranged around the main combustion chamber, the fuel can be biomass fuel or coal, and the gasification combustion mode is adopted, so that the fuel can be fully combusted, the temperature of combustion tail gas is low, the heat efficiency is high, the smoke emission pollution is small, and the environment-friendly requirement of smoke emission is met; it can also start different quantities of gasification combustion chambers according to the heating requirement, and has large heating power and strong adaptability.
(3) The heat exchange part comprises a heat exchange combustion chamber positioned at the upper part of the main combustion chamber, and a first barrel sleeve, a second barrel sleeve and a third barrel sleeve are sequentially arranged on the periphery of the heat exchange combustion chamber from inside to outside.
(4) The combustion hot air cavity and the heat exchange air cavity are reasonable in design, and air flow is balanced and stable, and jet flow, turbulence, vibration and noise are avoided.
Drawings
FIG. 1 is a schematic perspective view of an energy-efficient gasification combustion hot blast stove according to the present invention;
FIG. 2 is a perspective view of the upper side of the combustion section of the present invention;
FIG. 3 is a perspective view of the underside of the combustion section of the present invention;
FIG. 4 is a schematic side view of the combustion section of the present invention;
FIG. 5 is a cross-sectional view AA in FIG. 4;
FIG. 6 is a schematic perspective view of the combustion part of the present invention, partially cut away;
FIG. 7 is a schematic perspective view of a gasification combustor in accordance with the present invention;
FIG. 8 is a schematic side view of the heat exchange portion of the present invention;
FIG. 9 is a cross-sectional view of BB of FIG. 8;
FIG. 10 is a schematic sectional view showing the heat exchange portion of the present invention.
In the figure: 1-furnace table surface, 2-furnace cylinder wall, 3-main combustion chamber, 4-gasification combustion chamber, 5-fire tube, 6-external sleeve layer, 7-combustion hot air cavity, 8-annular air supply channel, 9-air supply tube, 10-first air inlet, 11-first air outlet, 12-heat exchange combustion chamber, 13-first barrel sleeve, 14-second barrel sleeve, 15-third barrel sleeve, 16-inner layer heat exchange air cavity, 17-outer layer heat exchange air cavity, 18-smoke cavity, 19-fire tube, 20-air tube, 21-second air inlet, 22-second air outlet, 23-smoke outlet, 24-oxygen supply air tube, 25-ash discharge port, 26-turnover type furnace bottom, 27-operating rod, 28-furnace grate, 29-ash beating rotating shaft, 30-ash beating claws, 31-air deflectors, 32-heat exchange fins, 33-fuel bins, 34-fuel bin covers, 35-air blowers and 36-induced draft fans.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 10, a high-efficiency energy-saving gasification combustion hot blast stove comprises a combustion part and a heat exchange part; the combustion part comprises a furnace shell consisting of a furnace table surface 1 and a furnace cylinder wall 2, a main combustion chamber 3 with the upper end higher than the furnace table surface is arranged in the middle of the furnace shell, six gasification combustion chambers 4 are annularly arranged around a main combustion chamber 3 in a furnace shell, a fire passing pipe 5 communicated with the main combustion chamber 3 is arranged at the middle lower part of each gasification combustion chamber 4, outer sleeve layers 6 are arranged around the main combustion chamber 3, the gasification combustion chambers 4 and the fire passing pipe 5, combustion hot air cavities 7 communicated with each other are formed among the outer sleeve layers 6 and the outer walls of the main combustion chamber 3, the gasification combustion chambers 4 and the fire passing pipe 5, an annular air supply channel 8 is arranged outside the furnace cylinder wall 2, an air supply pipe 9 communicated with the air supply channel 8 and the combustion hot air cavity 7 is arranged at the corresponding position of each gasification combustion chamber 4, a first air inlet 10 is arranged at the outer side of the air supply channel 8, and a first air outlet 11 communicated with the combustion hot air cavity 7 is arranged at the upper part of the main combustion chamber 3; the heat exchange part comprises a heat exchange combustion chamber 12 positioned at the upper part of the main combustion chamber 3, a first barrel sleeve 13, a second barrel sleeve 14 and a third barrel sleeve 15 are sequentially arranged on the periphery of the heat exchange combustion chamber 12 from inside to outside, an annular inner layer heat exchange air cavity 16 is formed between the heat exchange combustion chamber 12 and the first barrel sleeve 13, an annular outer layer heat exchange air cavity 17 is formed between the second barrel sleeve 14 and the third barrel sleeve 15, an annular smoke cavity 18 is formed between the first barrel sleeve 13 and the second barrel sleeve 14, four smoke passing pipes 19 communicated with the smoke cavity 18 are arranged at the upper part of the heat exchange combustion chamber 12, an air passing pipe 20 communicated with the outer layer heat exchange air cavity 17 is arranged at the upper part of the inner layer heat exchange air cavity 16, a second air inlet 21 is arranged at the lower part of the outer layer heat exchange air cavity 17, a second air outlet 22 is arranged at the lower part of the inner layer heat exchange air cavity 16, and a smoke outlet 23 is arranged at the lower part. Three oxygen supply and distribution pipes 24 communicated to the outside of the furnace shell are arranged at the bottom of the main combustion chamber 3. An ash discharge port 25 is arranged at the bottom of the main combustion chamber 3, a turning plate type furnace bottom 26 is arranged on the ash discharge port 25, and an operating rod 27 extending out of the furnace shell is arranged on the turning plate type furnace bottom 26. The lower part of the gasification combustion chamber 4 is provided with a grate 28, an ash beating device is arranged below the grate 28, the ash beating device comprises an ash beating rotating shaft 29 extending out of the furnace shell, and a plurality of ash beating claws 30 corresponding to ash leaking strip holes of the grate 28 are connected to the ash beating rotating shaft 28. An air guide plate 31 is provided on the outer wall of the gasification combustion chamber 4. Heat exchange fins 32 are provided on the outer sides of the heat exchange combustion chamber 12, the first barrel casing 13, and the second barrel casing 14. An elevated bunker 33 and a bunker cover 34 are provided at the upper part of each gasification combustion chamber 4. The first air inlet 10 and the second air inlet 21 are connected with an air blower 25 through a tee air pipe, and the smoke outlet 23 is communicated with an induced draft fan 36.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. The utility model provides an energy-efficient gasification burning hot-blast furnace, it includes combustion section and heat transfer part, its characterized in that: the combustion part comprises a furnace shell consisting of a furnace table surface and a furnace cylinder wall, a main combustion chamber with the upper end higher than the furnace table surface is arranged in the middle of the furnace shell, a plurality of gasification combustion chambers are annularly arranged around the main combustion chamber in the furnace shell, a fire tube communicated with the main combustion chamber is arranged at the middle lower part of each gasification combustion chamber, outer sleeve layers are arranged around the main combustion chamber, the gasification combustion chambers and the fire tube, mutually communicated combustion hot air cavities are formed among the outer sleeve layers and the outer walls of the main combustion chamber, the gasification combustion chambers and the fire tube, an annular air supply channel is arranged on the furnace cylinder wall, an air supply pipe communicated with the air supply channel and the combustion hot air cavities is arranged at the corresponding position of each gasification combustion chamber, a first air inlet is arranged at the outer side of the air supply channel, and a first air outlet communicated with the combustion hot air cavities is arranged at the upper part of the main combustion chamber; the heat exchange part comprises a heat exchange combustion chamber positioned on the upper part of the main combustion chamber, a first barrel sleeve, a second barrel sleeve and a third barrel sleeve are sequentially arranged on the periphery of the heat exchange combustion chamber from inside to outside, an annular inner layer heat exchange air cavity is formed between the heat exchange combustion chamber and the first barrel sleeve, an annular outer layer heat exchange air cavity is formed between the second barrel sleeve and the third barrel sleeve, an annular smoke cavity is formed between the first barrel sleeve and the second barrel sleeve, a smoke passing pipe communicated with the smoke cavity is arranged on the upper part of the heat exchange combustion chamber, a wind passing pipe communicated with the outer layer heat exchange air cavity is arranged on the upper part of the inner layer heat exchange air cavity, a second air inlet is arranged on the lower part of the outer layer heat exchange air cavity, a second air outlet is arranged on the lower part of the inner layer heat exchange air cavity, and a smoke outlet is arranged.
2. The high-efficiency energy-saving gasification combustion hot blast stove according to claim 1, characterized in that: one or more oxygen supply and distribution pipes communicated to the outside of the furnace shell are arranged at the bottom of the main combustion chamber.
3. The high-efficiency energy-saving gasification combustion hot blast stove according to claim 2, characterized in that: the bottom of the main combustion chamber is provided with an ash discharge port, the ash discharge port is provided with a turning plate type furnace bottom, and the turning plate type furnace bottom is provided with an operating rod extending out of the furnace shell.
4. The high-efficiency energy-saving gasification combustion hot blast stove according to claim 3, characterized in that: the lower part of the gasification combustion chamber is provided with a grate, an ash beating device is arranged below the grate, the ash beating device comprises an ash beating rotating shaft extending out of the furnace shell, and a plurality of ash beating claws corresponding to ash leaking strip holes of the grate are connected to the ash beating rotating shaft.
5. The high-efficiency energy-saving gasification combustion hot blast stove according to claim 4, characterized in that: the outer wall of the gasification combustion chamber is provided with an air deflector.
6. The high-efficiency energy-saving gasification combustion hot blast stove according to any one of claims 1 to 5, characterized in that: and heat exchange fins are arranged on the outer sides of the heat exchange combustion chamber, the first barrel sleeve and the second barrel sleeve.
7. The high-efficiency energy-saving gasification combustion hot blast stove according to claim 6, characterized in that: the upper part of each gasification combustion chamber is provided with a heightened fuel bin and a fuel bin cover.
8. The high-efficiency energy-saving gasification combustion hot blast stove according to claim 7, characterized in that: the first air inlet and the second air inlet are connected with an air blower through a three-way air pipe, and the smoke outlet is communicated with an induced draft fan.
CN202110133687.6A 2021-02-01 2021-02-01 High-efficiency energy-saving gasification combustion hot-blast stove Pending CN112709982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110133687.6A CN112709982A (en) 2021-02-01 2021-02-01 High-efficiency energy-saving gasification combustion hot-blast stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110133687.6A CN112709982A (en) 2021-02-01 2021-02-01 High-efficiency energy-saving gasification combustion hot-blast stove

Publications (1)

Publication Number Publication Date
CN112709982A true CN112709982A (en) 2021-04-27

Family

ID=75549877

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110133687.6A Pending CN112709982A (en) 2021-02-01 2021-02-01 High-efficiency energy-saving gasification combustion hot-blast stove

Country Status (1)

Country Link
CN (1) CN112709982A (en)

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