CN101655237A

CN101655237A - Straw pellet fuel combustor

Info

Publication number: CN101655237A
Application number: CN200910012947A
Authority: CN
Inventors: 程建平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-06
Filing date: 2009-08-06
Publication date: 2010-02-24

Abstract

The invention provides a straw pellet fuel combustor, comprising a round table surface furnace wall of which the lower part is a small circle and the upper part is a big circle, the great round opening above the furnace wall is a furnace mouth, the small round opening below the furnace wall is a furnace hearth provided with an ash discharging hole, an ash discharging hole door is arranged outsidethe ash discharging hole of the furnace hearth, air inlets are evenly distributed at the upper, the middle and the lower layers of the furnace wall along periphery direction, a jacket is arranged at the outside of the furnace wall, and a air inlet pipe is connected below the jacket and communicated with the inner cavity of the jacket. The invention can lead the straw pellet fuel in combusting to generate a great number of flammable volatile, charry smoke and other flammable gas which can be instantly and completely combusted after being generated so as to make full use of crop straw pellet fuel effectively and avoid emission of harmful gas such as flammable volatile, smoke and other flammable gas and the like and have no environment pollution. The invention is a clean combustor.

Description

Straw particle fuel combustor

Technical field

The present invention relates to a kind of burner of solid particle fuel, particularly a kind of is the burner of fuel with the agricultural crop straw particle.

Background technology

Agricultural crop straw can be squeezed into particle after pulverizing, agricultural crop straw particle volume after the extruding compacting is 1/20th～a thirtieth of a former agricultural crop straw volume, every kilogram of agricultural crop straw particle has 4,000 kilocalories heat approximately, stalk particle can be used as fuel combustion, being used for the cooking, warming oneself and heat up water, is a kind of novel renewable energy preferably.In the prior art, solid particle fuel can be in civilian combustion furnace internal combustion, and combustion furnace has the tubular furnace wall, is burner hearth in the furnace wall, and there is fire door furnace wall top, and the sidewall of top, furnace wall has outlet flue, the fire grate of having gone to the bottom of the burner hearth in the furnace wall.During use, granular fuel is placed on the fire grate top in the burner hearth and lights, enter wind one time from the fire grate below, pot or water heater are placed on the fire door, wind combustion-supporting burn of granular fuel because of entering in the burner hearth produces heat pot or water heater heating, and the flue gas that burning produces is discharged from outlet flue, with above-mentioned combustion furnace burning particles fuel the time, enter the burning that an enough wind just helps burner hearth endoparticle fuel from the fire grate below.The burning feature of most of agricultural crop straws is to be difficult for producing flame when burning, when burning, there was volatile matter to evaporate before this, then charing generates cigarette, volatile matter and cigarette all are combustibles, above-mentioned combustion furnace does not have overfiren air port, flammable volatile matter and cigarette do not have burning condition, the flammable volatile matter and the cigarette that produce are all discharged from outlet flue with flue gas, if one time wind enough greatly just can make the burning of volatile matter and cigarette, but can make the flame in the burner hearth go out higher upward like this, make flame be difficult to utilize, since the agricultural crop straw particle pressed very real particle, when burning stalk particle inside be difficult to touch combustion air, be difficult for from the outside more being easy to generate volatile matter during burning and becoming cigarette with charing to internal-combustion.Combustion furnace of the prior art can not make granular fuel with crop straw fully burning effectively, will discharge a large amount of volatile matters and cigarette during burning, and the volatile matter of discharge and cigarette all are pernicious gases, pollute surrounding environment.

When burning, generate flammable volatile matter, the cigarette of charing and the characteristics of other imflammable gas easily according to most agricultural crop straw, in the prior art, someone has manufactured the agricultural crop straw gasification furnace, allow agricultural crop straw in when burning, produce cigarette and other imflammable gas of great number of flammable volatile matter, charing when particularly allowing under the condition of agricultural crop straw in anoxic burning, the cigarette of the flammable volatile matter that the agricultural crop straw gasification furnace is produced, charing and other imflammable gas are drawn with pipeline and are delivered to the gas furnace internal combustion then.The agricultural crop straw gasification of this agricultural crop straw gasification furnace and flammable volatile matter, the cigarette of charing and the burning of other imflammable gas that produces separate, middle continuous with pipeline, agricultural crop straw flammable volatile matter when heating and gasifying evaporates because of temperature is high, become under flammable volatile matter can condense again when temperature reduces and heat up in a steamer oil, heat up in a steamer and not only contain the material very harmful in the oil human body, be difficult for the foul odour that leaves in addition, the volatile matter that diffuses out during the stalk gasifier burning greatly pollutes surrounding environment.

Summary of the invention

The objective of the invention is in order to overcome above-mentioned deficiency, propose a kind of granular fuel with crop straw that can make and fully burn, do not have noxious gas emissions such as flammable volatile matter, cigarette and other imflammable gas, straw particle fuel combustor free from environmental pollution effectively.

The present invention is achieved using the following method.

Invention scheme of the present invention is the characteristics according to stalk granular fuel, allow stalk granular fuel produce cigarette and other imflammable gas of great number of flammable volatile matter, charing, completing combustion immediately after the cigarette of flammable volatile matter, charing and other imflammable gas produce in when burning.

For realizing the foregoing invention scheme, straw particle fuel combustor has the tubular furnace wall, the upper end nozzle of furnace wall is a fire door, the lower end nozzle has furnace bottom, ash output opening is arranged on the furnace bottom, and the furnace bottom ash output opening has the ash output opening door outward, and the along the circumferential direction uniform fresh air inlet of upper, middle and lower-ranking is arranged on the furnace wall, there is chuck in the outside, furnace wall, and the below of chuck is connected with the blast pipe that communicates with the chuck inner chamber.

During use, connect air blast at blast pipe, close the ash output opening door, stalk particle is added in the tubular furnace wall, be burner hearth in the tubular furnace wall, allow and add near the top fresh air inlet of middle level, furnace wall of the interior stalk particle layer of burner hearth, light stalk particle in the furnace wall, blast air from blast pipe, air is from last, in, following three layers of fresh air inlet enter in the furnace wall, go in the stalk particle layer as a wind from the air that furnace wall lower floor fresh air inlet enters, stalk particle produces the great number of flammable volatile matter in burning, the cigarette of charing and other imflammable gas, the flammable volatile matter of above the stalk particle layer, emerging, the cigarette of charing and other imflammable gas have higher temperature, in burner hearth on, in between the two-layer fresh air inlet with from last, in the secondary wind facies that enters of two-layer fresh air inlet mix and fully burning in burner hearth.

The present invention allows stalk granular fuel burn under a wind action and produces cigarette and other imflammable gas of flammable volatile matter, charing, under the secondary wind action, make the cigarette and the completing combustion in burner hearth immediately of other imflammable gas of above-mentioned flammable volatile matter, charing, stalk granular fuel is fully burnt, burned flame mainly is in burner hearth, the convenient utilization, the fuel availability height does not have noxious gas emission, free from environmental pollution after the burning, be a kind of clean burning device.

Below in conjunction with accompanying drawing, the present invention is further described.

Description of drawings

Fig. 1 is that a kind of tubular furnace wall that proposes according to invention scheme of the present invention is the main cross-sectional schematic of columnar cylinder straw particle fuel combustor;

Fig. 2 is that schematic diagram cuts open in the side-looking office of Fig. 1;

Fig. 3 is that schematic diagram cuts open in the office of overlooking of Fig. 1;

Fig. 4 is that the tubular furnace wall is the main cross-sectional schematic of the frustum cone cylinder straw particle fuel combustor of round platform tubular;

Fig. 5 is that schematic diagram cuts open in the side-looking office of Fig. 4;

Fig. 6 is that schematic diagram cuts open in the office of overlooking of Fig. 5.

The specific embodiment

Among Fig. 1～Fig. 3, straw particle fuel combustor has cylindrical shape furnace wall 1, the upper end nozzle of furnace wall is a fire door 2, the lower end nozzle has furnace bottom 3, semicircle ash output opening 4 is arranged on the furnace bottom, the furnace bottom ash output opening has slideway 5 outward, board plug type ash output opening door 6 is arranged on the slideway, the along the circumferential direction uniform fresh air inlet of upper, middle and lower-ranking 7,8,9 is arranged on the furnace wall, the aperture of fresh air inlet is 2～4 millimeters, the quantity ratio of upper, middle and lower-ranking fresh air inlet is 6～10: 2～3: 1～2, and the outside, furnace wall has chuck 10, the below of chuck to be connected with the blast pipe 12 that communicates with chuck inner chamber 11.

The tubular furnace wall of above-mentioned straw particle fuel combustor is a cylindrical shape, is the cylinder straw particle fuel combustor.The tubular furnace wall of straw particle fuel combustor also can be the round platform tubular, and the tubular furnace wall is that the straw particle fuel combustor of round platform tubular is the frustum cone cylinder straw particle fuel combustor.

Among Fig. 4～Fig. 6, it is roundlet that the frustum cone cylinder straw particle fuel combustor has the lower end nozzle, the upper end nozzle is the round platform tubular furnace wall 13 of great circle, the nozzle of top, furnace wall is a fire door 14, the nozzle of below, furnace wall has furnace bottom 15, semicircle ash output opening 16 is arranged on the furnace bottom, the furnace bottom ash output opening has slideway 17 outward, board plug type ash output opening door 18 is arranged on the slideway, on having on the furnace wall, in, following three layers of along the circumferential direction uniform

fresh air inlet

19,20,21, the aperture of fresh air inlet is 2～4 millimeters, on, in, the quantity ratio of following three layers of fresh air inlet is 6～10: 2～3: 1～2, and the outside, furnace wall has chuck 22, the below of chuck to be connected with the blast pipe 24 that communicates with chuck inner chamber 23.

The number of degrees of the base angle A of the round platform tubular furnace wall of above-mentioned frustum cone cylinder straw particle fuel combustor can be 50 °～90 °, and the great circle of furnace wall frustum cone cylinder can be 1: 0.4～1 with little diameter of a circle ratio.

Claims

1. a straw particle fuel combustor has the tubular furnace wall, the upper end nozzle of furnace wall is a fire door, it is characterized in that: the lower end nozzle of furnace wall has furnace bottom, ash output opening is arranged on the furnace bottom, the furnace bottom ash output opening has the ash output opening door outward, the along the circumferential direction uniform fresh air inlet of upper, middle and lower-ranking is arranged on the furnace wall, and there is chuck in the outside, furnace wall, and the below of chuck is connected with the blast pipe that communicates with the chuck inner chamber.

2. by the described straw particle fuel combustor of claim 1, it is characterized in that: the aperture of described fresh air inlet is 2～4 millimeters, the quantity ratio of upper, middle and lower-ranking fresh air inlet is 6～10: 2～3: 1～2, ash output opening on the furnace bottom is a semi-circular hole, ash output opening has slideway outward, and board plug type ash output opening door is arranged on the slideway.

3. by claim 1 or 2 described straw particle fuel combustors, it is characterized in that: described tubular furnace wall is a cylindrical shape.

4. by claim 1 or 2 described straw particle fuel combustors, it is characterized in that: described tubular furnace wall is that the lower end nozzle is that roundlet, upper end nozzle are the round platform tubulars of great circle, the number of degrees at base angle, round platform tubular furnace wall are 50 °～90 °, and the great circle of furnace wall frustum cone cylinder is 1: 0.4～1 with little diameter of a circle ratio.