CN202470049U - Biomass powder cyclone burning device - Google Patents

Abstract

The utility model discloses a cyclone combustion device for biomass powder, which comprises a combustion cylinder and a powder spray gun installed in the combustion cylinder. The middle part of the nozzle of the powder spray gun is provided with a cone for dispersing biomass powder; the powder The body spray gun is connected with the dosing device through the conveying pipe, and is used to controlly provide biomass powder fuel in a quantitative manner; the dosing device is connected to include a hopper, a dosing mechanism and an air compressor, and the hopper is installed on the At the material inlet of the quantitative feeding mechanism, the material outlet of the quantitative feeding mechanism is connected to the delivery pipe, and one end of the delivery pipe is connected to the air compressor. The utility model has the following beneficial effects: high combustion efficiency, easier ignition and burnout, dual-purpose coal powder and biomass powder, good environmental protection, compared with coal burning, can greatly reduce dust discharge; main pollutant discharge is also large To reduce, more environmentally friendly.

Description

Biomass powder cyclone combustion device

technical field

The utility model belongs to the technical field of combustion, in particular to a biomass powder cyclone combustion device.

Background technique

my country is a big country of energy consumption. In the total energy consumption of the country, coal occupies a large proportion, reaching more than 75%. At present, in industrial boilers, a large number of layer-fired furnaces are still used. The layer-fired furnaces burn lump coal (bituminous coal) and cannot burn pulverized coal, especially anthracite coal powder. This leads to aggravation of environmental pollution, and with the rise of coal prices, the cost of combustion is also getting higher and higher.

Biomass fuel is mostly block-packed environmentally friendly new energy produced by processing stem-shaped crops. Its diameter is generally 6-8 mm, and its length is 4-5 times its diameter. The breakage rate is less than 1.5%-2.0%. Less than 10%-15%, the ash content is less than 1.5%, the sulfur content and chlorine content are both less than 0.07%, and the nitrogen content is less than 0.5%. Part of the biomass fuel is made from artificial forests after crushing and drying.

Biomass fuel has the following advantages:

1. The calorific value of biomass fuel is large, the calorific value is about 3900-4800 kcal/kg, and the calorific value after carbonization is as high as 7000-8000 kcal/kg;

2. Biomass fuel has high purity and does not contain other sundries that do not generate heat. Its carbon content is 75-85%, ash content is 3-6%, water content is 1-3%, and absolutely does not contain coal gangue, stones, etc. Impurities that generate heat but consume heat will directly reduce costs for enterprises;

3. Biomass fuel does not contain sulfur and phosphorus, does not corrode the boiler, can prolong the service life of the boiler, and the enterprise will benefit greatly;

4. Since biomass fuel does not contain sulfur and phosphorus, it does not produce sulfur dioxide and phosphorus pentoxide during combustion, so it will not cause acid rain, pollute the atmosphere, and do not pollute the environment;

5. Biomass fuel is clean and hygienic, easy to feed, reduces labor intensity of workers, greatly improves the working environment, and enterprises will reduce labor costs;

6. After the biomass fuel is burned, there is very little ash, which greatly reduces the site for piling up coal ash and reduces the cost of ash;

7. The ashes after biomass fuel combustion are high-quality organic potassium fertilizers with high grades, which can be recycled for profit;

8. Biomass fuel is a renewable energy gifted to us by nature; it is inexhaustible and inexhaustible.

Therefore, biomass fuel is the best substitute for coal or fuel oil. However, due to the relatively high moisture content of biomass powder, it is difficult to catch fire. If the feed combustion is carried out according to the current combustion equipment, it will be difficult to ignite and burn out.

Utility model content

The purpose of the utility model is to provide a biomass powder whirlwind combustion device with simple structure and easy ignition in view of the shortcomings of the above-mentioned prior art.

The utility model is realized in the following way: the biomass powder cyclone combustion device includes a combustion cylinder and a powder spray gun installed in the combustion cylinder, the middle part of the nozzle of the powder spray gun is provided with a cone for dispersing the biomass powder, so that Biomass powder is evenly sprayed around the cone, making it easier to catch fire and burn more fully.

The powder spray gun is connected with a quantitative feeding device through a delivery pipe, and is used for controllable quantitative supply of biomass powder fuel.

The dosing device is connected to include a hopper, a dosing mechanism and an air compressor, the hopper is installed at the material inlet of the dosing mechanism, and the material outlet of the dosing mechanism is connected to the delivery pipe , one end of the delivery pipe is connected to the air compressor.

The quantitative feeding mechanism may be a screw feeder.

The combustion cylinder may be a cyclone combustion cylinder, and at least one tangential air inlet is provided on the side wall above the cyclone combustion cylinder.

The cyclone combustion tube is connected with the boiler furnace through a flue gas channel.

The utility model has the following beneficial effects: ① High combustion efficiency: the biomass powder fuel is sprayed into the cyclone combustion cylinder after high-pressure dispersion, and the combustion is more complete and the efficiency is higher; ② The ignition point is easier: the ignition point of the biomass powder is dispersed. lower, easier and faster to ignite; ④Coal and biomass powder dual-use, no need to change the original structure of the boiler, can realize dual-use coal powder and biomass powder, without any risk of transformation, providing users with a variety of choices; no need to stop Furnace installation does not affect production; during the transformation period, the original combustion equipment is retained, the chain grate and coal scuttle are not changed, and during the production and installation of the pre-combustion chamber, the original boiler works as usual without affecting production; In comparison, it can greatly reduce the emission of dust; the emission of main pollutants is also greatly reduced, which is more environmentally friendly.

Description of drawings

Fig. 1 is a schematic structural view of a biomass powder cyclone combustion device of the present invention.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The biomass powder cyclone combustion device, as shown in Figure 1, includes a combustion cylinder 11 and a powder spray gun 6 installed in the combustion cylinder, the middle part of the nozzle of the powder spray gun 6 is provided with a cone 7 for dispersing biomass powder , so that the biomass powder is evenly sprayed out around the cone in a diffused shape, making it easier to catch fire and burn more fully. The cone 7 may be fixed to the middle of the nozzle of the powder spray gun 6 by welding. The powder spray gun 6 is connected with the dosing device through the conveying pipe 5, and is used for controllable quantitative supply of biomass powder fuel. Described dosing device connects and comprises hopper 2, dosing mechanism 4 and air compressor 3, and described hopper 2 is installed at the material inlet of described dosing mechanism 4, and the material outlet of described dosing mechanism 4 It is connected with the delivery pipe 5 , and one end of the delivery pipe 5 is connected with the air compressor 3 . The quantitative feeding mechanism 4 may be a screw feeder, and one end thereof is provided with a motor 1 for driving a feeding screw for feeding. The combustion cylinder 11 may be a cyclone combustion cylinder, and at least one tangential air inlet 8 is provided on the side wall above the cyclone combustion cylinder. The cyclone combustion tube is connected to the boiler furnace through a flue gas channel 9, and a liquid slag discharge device 10 is provided at the lower part of the cyclone combustion tube.

The above implementation examples are not limitations of the present utility model, and those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the present utility model, so all equivalent technical solutions are also It should belong to the category of the utility model, and the patent protection scope of the utility model should be defined by each claim.

Claims (6)

1. the living beings braize vortex burning device comprises combustion barrel and the powder spray gun that is installed on said combustion barrel, it is characterized in that: the nozzle middle part of said powder spray gun is provided with the cone that is used to disperse the living beings powder.

2. according to the described living beings braize vortex burning device of claim 1, it is characterized in that: said powder spray gun is connected with metering device through carrier pipe.

3. according to the described living beings braize vortex burning device of claim 2; It is characterized in that: said metering device connects and comprises hopper, dosing mechanism and air compressor; Said hopper is installed on the material inlet place of said dosing mechanism; The material outlet of said dosing mechanism is connected with said carrier pipe, and an end of said carrier pipe is connected with said air compressor.

4. according to the described living beings braize vortex burning device of claim 3, it is characterized in that: said dosing mechanism is the spiral blanking device.

5. according to the described living beings braize vortex burning device of claim 1, it is characterized in that: said combustion barrel is the cyclone firing tube, and the sidewall of said cyclone firing tube top is provided with at least one tangent air inlet.

6. according to the described living beings braize vortex burning device of claim 5, it is characterized in that: said cyclone firing tube is connected with said boiler furnace through exhaust gases passes.

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