CN110953712A - Semi-gasification biomass combustion hot blast stove - Google Patents
Semi-gasification biomass combustion hot blast stove Download PDFInfo
- Publication number
- CN110953712A CN110953712A CN201911422120.XA CN201911422120A CN110953712A CN 110953712 A CN110953712 A CN 110953712A CN 201911422120 A CN201911422120 A CN 201911422120A CN 110953712 A CN110953712 A CN 110953712A
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- Prior art keywords
- grate
- fixedly connected
- wall
- arch
- semi
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 20
- 238000002309 gasification Methods 0.000 title claims abstract description 20
- 239000002028 Biomass Substances 0.000 title claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 25
- 239000002893 slag Substances 0.000 claims abstract description 7
- 239000000779 smoke Substances 0.000 claims description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000011449 brick Substances 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 238000005336 cracking Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/027—Air heaters with forced circulation using solid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1877—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/189—Arrangement or mounting of combustion heating means, e.g. grates or burners using solid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The invention discloses a semi-gasification biomass combustion hot blast stove, which comprises a grate and a stove body, wherein one end of the grate close to a front shaft is fixedly connected with a hopper for placing fuel, a plurality of air chambers are arranged at one third part of the grate far away from the hopper, one end of the grate far away from the hopper is provided with a slag outlet, and the stove body is fixedly connected with one end of the hopper far away from the grate.
Description
Technical Field
The invention relates to a hot blast stove, in particular to a semi-gasification biomass combustion hot blast stove.
Background
Hot blast stove is a heat power machine, and is widely used in China in the end of the 20 th century 70 years, and has become the replacement product of electric heat source and traditional steam power heat source in many industries, the hot blast stove has many varieties and complete series, the hot blast stove is divided into hand burning and machine burning in a coal feeding mode, the hot blast stove is divided into coal, oil, gas stove and the like in fuel type, and through long-time production practice, people have recognized that the heat utilization rate and the heat working effect can be greatly improved only by using hot air as a medium and a carrier.
The form that present living beings hot-blast furnace adopted the combustor more, burn in fixed combustion chamber through biomass fuel, blow in flame in furnace by force, easy coking, the fuel utilization ratio is low, the incomplete combustion loss of solid is great, the boiler inefficiency, nitrogen oxide exceeds standard, to exhaust hot-blast, still there is some heat after the use, most hot-blast furnaces adopt modes such as direct discharge to handle the hot-blast after using, can not realize cyclic utilization, cause very big waste to hot-blast energy, simultaneously because the influence of deposit room structure, the uncontrollable dust discharges, the polluted atmosphere environment.
In view of the above problems, an improved semi-gasification biomass burning hot blast stove is now designed.
Disclosure of Invention
The invention aims to provide a semi-gasification biomass combustion hot blast stove to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a semi-gasification biomass combustion hot blast stove comprises a grate and a stove body, wherein the grate is fixed in a frame through a front shaft and a rear shaft, one end of the grate, close to the front shaft, is fixedly connected with a hopper for placing fuel, a plurality of air chambers are arranged at the position, far away from one third of the hopper, of the grate, the air chambers are distributed in front of the rear shaft, far away from one side of the hopper, of the grate, the air chambers are fixedly connected below the surface of the grate, and one end, far away from the hopper, of the grate is provided with a.
The furnace body is fixedly connected with one end of the hopper far away from the fire grate, the inner wall of the furnace body is fixedly connected with a refractory brick inner wall, the inner wall of the furnace body close to the hopper is fixedly connected with a front arch built by refractory bricks, one end of the slag outlet far away from the fire grate is fixedly connected with a rear arch smoke wall, one side of the rear arch smoke wall close to the fire grate is fixedly connected with a rear arch poured by refractory cement, the front arch and the rear arch form a fuel combustion area, a throat is formed between the front arch and the rear arch, the throat is positioned above the fire grate, one side of the front arch close to the throat is fixedly connected with a secondary air chamber, the upper end of the inner wall of the furnace body is fixedly connected with a front interference smoke wall and a rear interference smoke wall, the rear arch, the front interference smoke wall and the rear arch smoke wall form a combustible gas combustion area, the rear arch smoke wall and the rear interference smoke wall form a settling chamber, and a smoke outlet is formed in the furnace body of the settling chamber far away from the rear interference smoke wall.
As a further scheme of the invention: the fire grate is formed by welding and assembling a steel plate and a mechanical structure.
As a still further scheme of the invention: and a fuel cracking area for cracking the biomass fuel at high temperature and in an anoxic way to separate out combustible gas is formed between the front arch and the fire grate.
As a still further scheme of the invention: and a recycling flue for recycling residual heat of the flue gas is arranged in the furnace body above the throat.
As a still further scheme of the invention: and a dust cover for preventing dust from entering the recirculation flue is fixedly connected to the recirculation flue.
As a still further scheme of the invention: the furnace body is built by refractory bricks, red bricks and refractory cement.
As a still further scheme of the invention: and a filter screen for preventing fuel residues from entering the air chamber is fixedly connected to the air chamber.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention forms a fuel cracking area by arranging the exhaust chamber of the chain furnace, and forms the semi-gasification combustion of the biomass fuel by utilizing the characteristic of high volatile component of the biomass fuel.
2. The invention improves the chain grate, widens and lengthens the chain grate, so that the biomass fuel has enough burning time, the fuel utilization rate is improved, and the solid heat loss is reduced.
3. The invention recycles the residual heat of the flue gas by arranging the recirculation flue, controls the temperature of a high-temperature area in the hearth and reduces the formation of nitrogen oxides.
4. The invention achieves the aim of controlling the dust emission by arranging the interference wall of the settling chamber to change the direction and speed of the flue gas in the settling chamber.
Drawings
Fig. 1 is a front view of a semi-gasification biomass-burning hot blast stove.
Fig. 2 is a side view of a semi-gasification biomass-fired hot blast stove.
Fig. 3 is a top view of a semi-gasification biomass-burning hot blast stove.
Wherein: the furnace comprises a furnace body 1, a refractory brick inner wall 2, a recirculation flue 3, a front interference smoke wall 4, a rear arch 5, a rear arch smoke wall 6, a settling chamber 7, a rear interference smoke wall 8, a smoke outlet 9, a slag outlet 10, a grate 11, an air chamber 12, a secondary air chamber 13, a front arch 14 and a hopper 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in the embodiment of the invention, a semi-gasification biomass combustion hot blast stove comprises a grate 11 and a stove body 1, wherein the grate 11 is fixed in a frame through a front shaft and a rear shaft, one end of the grate 11 close to the front shaft is fixedly connected with a hopper 15 for placing fuel, a plurality of air chambers 12 are arranged at one third of the grate 11 far away from the hopper 15, the air chambers 12 are distributed in front of the rear shaft at one side of the grate 11 far away from the hopper 15, the air chambers 12 are fixedly connected below the surface of the grate, and one end of the grate 11 far away from the hopper 15 is provided with a slag outlet 10.
The furnace body 1 is fixedly connected with one end of a hopper 15 far away from a fire grate 11, a refractory brick inner wall 2 is fixedly connected with the inner wall of the furnace body 1, a front arch 14 built by refractory bricks is fixedly connected with the inner wall of the furnace body 1 near the hopper 15, a fuel cracking area for separating out combustible gas by high-temperature anoxic cracking of biomass fuel is formed between the front arch 14 and the fire grate 11, one end of a slag outlet 10 far away from the fire grate 11 is fixedly connected with a rear arch flue wall 6, one side of the rear arch flue wall 6 near the fire grate 11 is fixedly connected with a rear arch 5 poured by refractory cement, the front arch 14 and the rear arch 5 form a fuel combustion area, a throat is formed between the front arch 14 and the rear arch 5 and is positioned above the fire grate 11, one side of the front arch 14 near the throat is fixedly connected with a secondary air chamber 13, and a recirculation flue 3 for recycling residual heat of flue gas is arranged in the furnace body 1 above the throat, the furnace body is characterized in that a front interference smoke wall 4 and a rear interference smoke wall 8 are fixedly connected to the upper end of the inner wall of the furnace body 1, a combustible gas combustion area is formed by the rear arch 5, the front interference smoke wall 4 and the rear arch smoke wall 6, a settling chamber 7 is formed by the rear arch smoke wall 6 and the rear interference smoke wall 8, and a smoke outlet 9 is formed in the furnace body 1 far away from the rear interference smoke wall 8 of the settling chamber 7.
The working principle of the invention is as follows:
as shown in figure 1, the arrow direction in the figure is the air and flue gas flowing direction, the air enters an air chamber 12 through a blower, then enters a hearth through a gap of a grate 11 above the air chamber 12, fuel enters the grate 11 through a hopper 15, high-temperature anoxic cracking is carried out below a front arch 14 to separate out combustible gas, the combustible gas gradually moves backwards along with the grate 11 and is discharged out of the furnace through a slag hole 10 after complete combustion, secondary air of a hot blast stove is provided by a secondary air chamber 13, the combustible gas generated in the fuel cracking and combustion process is fully combusted in the oxygen supply environment of the secondary air blown out from the secondary air chamber 13, the flue gas enters a settling chamber 7 under the interference of a front interference flue wall 4 and a rear arch flue wall 6 and forms a downward-flushing steering under the action of a rear interference flue wall 8, most of dust is settled, the flue gas is discharged out of a furnace body 1 through a flue gas outlet 9 and enters a heat exchanger, and meanwhile, hot air discharged from the flue gas outlet, the residual heat of the flue gas is recycled, and meanwhile, the temperature of a high-temperature area in the hearth is controlled, so that the formation of nitrogen oxides is reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A semi-gasification biomass combustion hot blast stove comprises a grate (11) and a stove body (1), wherein the grate (11) is fixed in a frame through a front shaft and a rear shaft, and one end of the grate (11) close to the front shaft is fixedly connected with a hopper (15) used for putting fuel, and the semi-gasification biomass combustion hot blast stove is characterized in that a plurality of air chambers (12) are arranged at one third of the grate (11) far away from the hopper (15), the air chambers (12) are distributed in front of the rear shaft at one side of the grate (11) far away from the hopper (15), the air chambers (12) are fixedly connected below the surface of the grate, and one end of the grate (11) far away from the hopper (15) is provided with;
the furnace body (1) is fixedly connected with one end of the hopper (15) far away from the fire grate (11), a refractory brick inner wall (2) is fixedly connected onto the inner wall of the furnace body (1), a front arch (14) built by refractory bricks is fixedly connected onto the inner wall of the furnace body (1) near the hopper (15), one end of the slag hole (10) far away from the fire grate (11) is fixedly connected with a rear arch smoke wall (6), one side of the rear arch smoke wall (6) near the fire grate (11) is fixedly connected with a rear arch (5) poured by refractory cement, the front arch (14) and the rear arch (5) form a fuel combustion area, a throat is formed between the front arch (14) and the rear arch (5), the throat is positioned above the fire grate (11), one side of the front arch (14) near the throat is fixedly connected with a secondary air chamber (13), the upper end of the inner wall of the furnace body (1) is fixedly connected with a front interference smoke wall (4) and a rear interference smoke wall (, the rear arch (5), the front interference smoke wall (4) and the rear arch smoke wall (6) form a combustible gas combustion area, the rear arch smoke wall (6) and the rear interference smoke wall (8) form a settling chamber (7), and a smoke outlet (9) is formed in the furnace body (1) of the settling chamber (7) far away from the rear interference smoke wall (8).
2. The semi-gasification biomass-burning hot-blast stove according to claim 1, wherein the grate (11) is assembled by welding steel plates and mechanical structures.
3. The semi-gasification biomass-burning hot blast stove according to claim 1, wherein the front arch (14) and the grate (11) form a fuel cracking zone for high-temperature anoxic cracking of biomass fuel to produce combustible gas.
4. The semi-gasification biomass-burning hot blast stove according to claim 1, wherein a recirculation flue (3) for recycling residual heat of flue gas is arranged in the stove body (1) above the throat.
5. The semi-gasification biomass-burning hot blast stove according to claim 4, wherein a dust cover for preventing dust from entering the recirculation flue (3) is fixedly connected to the recirculation flue (3).
6. The semi-gasification biomass-burning hot-blast stove according to claim 1, wherein the stove body (1) is built of refractory bricks, red bricks and refractory cement.
7. The semi-gasification biomass-fired hot blast stove according to claim 1, wherein a filter screen for preventing fuel residues from entering the plenum (12) is fixedly connected to the plenum (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911422120.XA CN110953712A (en) | 2019-12-31 | 2019-12-31 | Semi-gasification biomass combustion hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911422120.XA CN110953712A (en) | 2019-12-31 | 2019-12-31 | Semi-gasification biomass combustion hot blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110953712A true CN110953712A (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911422120.XA Pending CN110953712A (en) | 2019-12-31 | 2019-12-31 | Semi-gasification biomass combustion hot blast stove |
Country Status (1)
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2019
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Application publication date: 20200403 |