CN212178850U - Biomass fuel formula semi-gasification combustion device - Google Patents

Abstract

The utility model relates to a tobacco leaf modulating device of biomass fuel formula semi-gasification burning belongs to flue-cured tobacco modulating equipment technical field. The utility model discloses a technical key: the biomass fuel formula is subjected to semi-gasification combustion: mixing different biomass fuels to be combusted according to a certain proportion, feeding the mixed biomass fuels into a storage bin, carrying out semi-gasification at the temperature of 60-180 ℃, and then respectively combusting volatile gas and residues (mainly fixed carbon). The biomass fuel is the original ecological biomass fuel with irregular shape, and the length, width and height of the original ecological biomass fuel are less than or equal to 30 cm. The biomass fuel bin is positioned at the upper part of the solid combustion chamber in the device. The biomass volatile gas is connected with the two combustion chambers of the remainder (mainly fixed carbon). The gas combustion chamber is positioned at the position of the bottom 31 of the pipeline of the solid combustion chamber, wherein the flue gas flow firstly rises and then sinks. The utility model discloses compare with current living beings granule combustor, have that construction cost is low, the modulation cost is low, the energy saving, practice thrift the advantage of labour cost, be applicable to the intensive modulation equipment of metal cooling tube of different grade type.

Description

Biomass fuel formula semi-gasification combustion device

Technical Field

The utility model relates to a biomass fuel formula semi-gasification combustion device, which belongs to the technical field of tobacco leaf modulation equipment.

Background

The biomass particle burner is widely applied to various heat supply fields such as boilers, industrial incineration, smelting, food processing, building materials, tobacco leaf modulation and the like. However, processing of biomass feedstock into a particulate state requires significant costs: firstly, the biomass raw materials need to be crushed, and then the raw materials are added with the formula and pressed into particles, so that the process is complex, labor and time are wasted, and the production cost is higher. At present, biomass fuels at home and abroad are mostly in particle shapes, and the particle biomass needs to be processed, so that the operation cost of heat supply combustion equipment is high.

Through the literature search, the public reports the same as the utility model are not found.

Disclosure of Invention

The utility model aims to provide a biomass fuel formula semi-gasification burning's device with two combustion chambers can directly use former ecological biomass raw and other materials, lets former ecological biomass raw and other materials semi-gasification, has carried out twice burning (volatile gas natural combustion, solid-state carbon reburning above the grate) at the device of semi-gasification burning, directly uses former ecological biomass fuel, can reduce heat supply running cost, lets intensive roast room popularize and apply biomass material in the great range of china.

The utility model discloses half gasification burner of biomass fuel formula is accomplished through following structure: its characterized in that combustion apparatus that partly gasifies comprises feed bin (1), solid-state combustion chamber (2), gas combustion chamber (3), radiator (4), ash hole/ventilation support passageway (5) and heat supply room (6), place in heat supply room (6) in feed bin (1), heat supply room (6) have accomplished biomass fuel's half gasification, the half gasification's of biomass fuel product when storing fuel: solid combustion substances and combustible gas enter the solid combustion chamber (2); the solid combustion objects are fully combusted in the solid combustion chamber to form ash content falling into an ash hole/ventilation and supply channel (5); the combustible gas is partially combusted in the solid combustion chamber, the rest part of the combustible gas is mixed with the smoke gas flow to enter the radiator (4), flows into the gas combustion chamber (3) through the pipeline, is fully combusted twice in the gas combustion chamber (3), then enters the radiator (4), and finally is discharged into the atmosphere through the chimney (7).

Two opening and closing hinge doors (8) are arranged at the bottom of the stock bin (1), and the opening and closing hinge doors (8) are respectively connected with herringbone suspension chains (9); the upper end of the sling chain (9) is connected with an automatically controlled stepping motor (10) to control the discharging speed of the stock bin (1).

The solid combustion chamber (2) is connected and communicated with the two combustion chambers of the gas combustion chamber (3).

The combustion point in the gas combustion chamber (3) is arranged at a first bottom position (31) of a sinking pipeline after the smoke gas flow of the solid combustion chamber (2) rises.

The silo (1) is used for carrying out a semi-gasification process at the temperature of 60-180 ℃, and then the generated volatile gas and the fixed carbon residues are respectively and completely combusted.

The biomass fuel is irregular in shape and is original ecological biomass fuel with the length, width and height being less than or equal to 30 cm.

The rated thermal power of the biomass fuel combustion device is 420000 kJ/h or 210000 kJ/h.

The semi-gasification combustion device is used for tobacco leaf modulation, or is used for tobacco leaf modulation in a bulk curing barn.

The utility model discloses a technical key: (1) the biomass fuel formula is subjected to semi-gasification combustion: mixing different biomass fuels to be combusted according to a certain proportion, feeding the mixed biomass fuels into a storage bin, carrying out semi-gasification at the temperature of 60-180 ℃, and then respectively combusting volatile gas and residues (mainly fixed carbon). (2) The biomass fuel is the original ecological biomass fuel with irregular shape, and the length, width and height of the original ecological biomass fuel are less than or equal to 30 cm. (3) The biomass fuel bin is positioned at the upper part of the solid combustion chamber in the device. (4) The biomass volatile gas is connected with the two combustion chambers of the remainder (mainly fixed carbon). (5) The gas combustion chamber is positioned at the position of the bottom 31 of the pipeline of the solid combustion chamber, wherein the flue gas flow firstly rises and then sinks.

The utility model discloses a structure that two combustion chambers put through each other lets primitive biomass fuel (like straw, sawdust, bagasse, rice chaff etc.) need not the shaping (like cubic, graininess etc.), simply smashes or cuts for a short time, only needs the appearance to be irregularly shaped, long, wide, height ≦ 30cm within range, can directly use.

Description of the drawings:

fig. 1 is a structural sectional view of the device of the present invention.

1-a storage bin, 2-a solid combustion chamber; 3-a gas combustion chamber; 31-combustion point, 4-radiator; 5-ash hole/ventilation feeding channel; 6-a heat supply chamber; 7, a chimney; 8, opening and closing the hinge door; 9-hanging chain; 10-a step motor, wherein the step motor is provided with a motor,

the specific implementation mode is as follows:

the actual biomass fuel formula semi-gasification combustion device is adopted for verification:

when the biomass fuel is used, the biomass fuel can be mixed according to a certain proportion according to different calorific values of biomass fuels to be combusted, and can also be controlled by controlling the wind speed of the fan.

The biomass fuel enters the bin 1, the bin gate of the feeding port is closed, partial biomass fuel firstly falls into the hearth of the solid combustion chamber 2 by controlling the opening and closing hinge door 8 at the bottom of the bin 1, then after the fire of the hearth of the solid combustion chamber 2 is ignited, the bottom fan is started simultaneously, the biomass fuel falling into the hearth of the solid combustion chamber 2 is firstly combusted, the combusted biomass fuel generates hot gas to rise and enters the bin 1, the biomass fuel in the bin 1 is smoldered under the anoxic state, small molecular substances in the biomass fuel in the bin 1 are gasified to form volatile combustible gas, the bin gate of the feeding port is sealed and closed, so the generated volatile combustible gas can only return to the solid combustion chamber 2 from the opening at the bottom of the bin 1 for the first combustion, and the residual volatile combustible gas which is not combusted enters the pipeline of the gas combustion chamber 3 from the side pipeline of the solid combustion chamber 2, carry out the postcombustion/ignition burning in 3 pipelines of gas combustion chamber, the residual material is solid carbon material fuel after 1 indoor gasification of feed bin, solid carbon material fuel falls into the grate top of solid combustion chamber 2 naturally after through the fire bars, continue the burning, the production heat also gets into radiator 4 from 2 lateral part pipelines of solid combustion chamber and carries out the heat exchange, in the pipeline of volatility gas combustion chamber 3, produce heat energy and become the hot-air through the fin of 3 pipeline outer walls of gas combustion chamber, the hot-air passes through the pipeline and gets into the flue-cured tobacco smoke house, it is dry to fresh tobacco leaf.

Furthermore, the utility model discloses the heat of 2 releases of solid-state combustion chamber provides higher temperature environment for gas combustion chamber 1, 1 bottom opening part of feed bin is located solid-state combustion chamber 2's upper portion, be favorable to the half gasification of biomass fuel in the feed bin, let the volatile gas that half gasification produced sink 1 room bottom of feed bin, pass solid-state combustion chamber 2 and carry out the first combustion earlier, the volatile gas that has not burnt, rethread lateral part pipeline gas combustion chamber 3 carries out the secondary combustion, guarantee the complete combustion of volatile gas.

The utility model discloses with the burning point setting in the gas combustion chamber producing the flue gas stream and rising the sunken first pipeline bottom 31 position in back behind the gas combustion chamber pipeline, burning easily in this local ignition, because when we utilized the sunken pipeline bottom of combustible flue gas, its gas density is big, the characteristics of lighting easily, the burning is complete moreover.

Example 1: (for air-flow lifting horizontal type intensive curing barn heating)

When the tobacco leaf is prepared, different biomass fuels to be combusted are mixed in a storage bin according to a specific proportion, semi-gasification is carried out at the temperature of 60-180 ℃, and then volatile gas and residues (mainly fixed carbon) are combusted respectively. The biomass fuel is simply crushed or cut into small pieces, and can be put into a storage bin when the length, width and height of the biomass fuel in an irregular shape are less than or equal to 30 cm.

The rated thermal power of the biomass fuel combustion device is 420000 kJ/h.

The biomass fuel formula semi-gasification combustion device has the following construction cost: 10000.00 yuan/set; stable performance and high tobacco leaf quality.

And (3) modulation cost accounting: the remuneration of the modulating personnel is not counted, the fuel and electricity charge is modulated, the dry tobacco is 1.57 yuan/kg, compared with the modulating cost of 2.70 yuan/kg of dry tobacco in the large-area airflow ascending horizontal type intensive curing barn, the modulating cost is saved by 41.85%, and the economic benefit is very obvious.

The tobacco leaf modulation result is as follows: the color is golden yellow and orange, and the oil content is more; the middle-first grade smoke proportion is 94%; and (3) evaluating the smoking result of the expert on the tobacco leaves: the incense has the advantages of pure quality, sufficient amount of incense, rich smoke concentration, small irritation, moderate strength, light miscellaneous gas, good taste and high use value.

The verification process and results are shown in table 1:

TABLE 1 tobacco leaf modulating device for biomass fuel formula semi-gasification combustion

Verification process and result applied to airflow ascending type horizontal intensive curing barn

Example 2: (for air-flow descending horizontal type intensive curing barn heating)

The rated thermal power of the biomass fuel combustion device is 210000 kJ/h

Performance evaluation of a biomass fuel formula semi-gasification combustion device: stable performance and high tobacco leaf quality.

The tobacco leaf modulating device for biomass fuel formula semi-gasification combustion has the following construction cost: 10000.00 yuan/set.

And (3) modulation cost accounting: the remuneration of the modulating personnel is not counted, the fuel and electricity charge is modulated, the dry tobacco is 1.50 yuan/kg, compared with the modulating cost of 2.70 yuan/kg of dry tobacco in the large-area airflow ascending horizontal type intensive curing barn, the modulating cost is saved by 44.44%, and the economic benefit is very obvious.

The tobacco leaf modulation result is as follows: the color is golden yellow and orange, and the oil content is more; the middle-high grade smoke proportion is 97%; and (3) evaluating the smoking result of the expert on the tobacco leaves: the incense has the advantages of pure quality, sufficient amount of incense, rich smoke concentration, small irritation, moderate strength, light miscellaneous gas, good taste and high use value.

1100.00 yuan/ton of granular biomass fuel and 440.00 yuan/ton of original ecological biomass fuel in Yunnan province in 2019; the difference between the two is large. The utility model discloses the achievement has realized the application of biomass fuel formula semi-gasification burner, has that construction cost is low, modulation cost is low, the energy saving, practice thrift the characteristics of labour cost.

Claims (8)

1. The utility model provides a biomass fuel formula semi-gasification burner which characterized in that semi-gasification burner comprises feed bin (1), solid-state combustion chamber (2), gas combustion chamber (3), radiator (4), ash hole/ventilation support passageway (5) and heat supply room (6), place in heat supply room (6) in feed bin (1), heat supply room (6) have accomplished biomass fuel's semi-gasification, the half gasification's of biomass fuel product when storing fuel: solid combustion substances and combustible gas enter the solid combustion chamber (2); the solid combustion objects are fully combusted in the solid combustion chamber to form ash content falling into an ash hole/ventilation and supply channel (5); the combustible gas is partially combusted in the solid combustion chamber, the rest part of the combustible gas is mixed with the smoke gas flow to enter the radiator (4), flows into the gas combustion chamber (3) through the pipeline, is fully combusted twice in the gas combustion chamber (3), then enters the radiator (4), and finally is discharged into the atmosphere through the chimney (7).

2. The biomass fuel formula semi-gasification combustion device according to claim 1, characterized in that the bottom of the storage bin (1) is provided with two opening and closing hinge doors (8), and the opening and closing hinge doors (8) are respectively connected with a herringbone suspension chain (9); the upper end of the sling chain (9) is connected with an automatically controlled stepping motor (10) to control the discharging speed of the stock bin (1).

3. The biomass fuel formula semi-gasification combustion device according to claim 1, characterized in that the solid combustion chamber (2) is communicated with the gas combustion chamber (3).

4. The biomass fuel formulation semi-gasification combustion device according to claim 1, characterized in that the combustion point in the gas combustion chamber (3) is arranged at a first bottom position (31) of a sinking pipe after the flue gas flow of the solid combustion chamber (2) rises.

5. The biomass fuel formula semi-gasification combustion device according to claim 1, characterized in that the silo (1) is used for semi-gasification at 60-180 ℃, and then the produced volatile gas and the fixed carbon residue are respectively completely combusted.

6. The biomass fuel formulation semi-gasification combustion device of claim 1, wherein the biomass fuel is a raw biomass fuel having a length, width, and height ≦ 30 cm.

7. The biomass fuel formulation semi-gasification combustion device of claim 1, wherein the biomass fuel combustion device has a rated thermal power of 420000 kJ/h or 210000 kJ/h.

8. The biomass fuel formulation semi-gasification combustion device of claim 1, wherein the semi-gasification combustion device is used for tobacco leaf curing, or tobacco leaf curing in a bulk curing barn.

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