CN100451451C

CN100451451C - Burning method and device for energy saving and removing smoke of coal stove

Info

Publication number: CN100451451C
Application number: CNB2006100707889A
Authority: CN
Inventors: 彭中礼; 李彤; 韩卫平; 彭洁
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-12
Filing date: 2006-12-12
Publication date: 2009-01-14
Anticipated expiration: 2026-12-12
Also published as: CN1987206A

Abstract

An energy-saving combustion method without smoke for coal stove features that the mixture of powdered coal and combustible gas is burning in vortex mode in a high-temp combustion chamber consisting of upper stove basin, non-closed combustion ring, supporting frame, fire wall and the top opening of stove liner. Its combustion apparatus is composed of stove cover, upper stove basin, smoke outlet, fire wall, stove liner, combustion box, stove body, grate and ash storing base.

Description

A kind of energy-conservation, smoke abatement combustion method of coal stove and burner

Technical field

The invention belongs to field of combustion technology, relate to a kind of combustion method and burner of domestic briquet stove more specifically.

Background technology

Northern China rural area and the many residents of samll cities and towns still use the simple and easy coal stove that burns coal slime, diffusing coal to warm oneself, heat up water, cook in the winter time at present.These coal stoves are more outmoded, generally become furnace lining with the mud cover in the stove, because the furnace lining structure design is unreasonable, coal can not fully burn, and a large amount of superfine pulverized coal and imflammable gas are discharged from chimney, both waste energy, again contaminated environment.Simple and easy coal stove is from the fire door coal, coal preheating, high-temp combustion, soot emissions are all here, on the theory of combustion, preheating zone and high temperature combustion zone should separate on the locus, but simple and easy coal stove is limit by structure, and these two zones all overlap fire door, therefore, designing fire door, is the key that improves efficiency of combustion, reduces flue dust.

Summary of the invention

The present invention is for solving an above-mentioned difficult problem, and a kind of energy-conservation, smoke abatement combustion method and burner of coal stove is provided, and it can improve burning of coal efficient, reduces and pollutes, the protection environment.

The technical solution adopted in the present invention is: be provided with a high temperature combustors at furnace lining place suitable for reading, superfine pulverized coal, imflammable gas reach purpose energy-conservation, smoke abatement in the burning of high temperature combustors inside vortex.

Burner mainly comprises: bell, burner basin, outlet flue, firebreak, furnace lining, burner hearth, body of heater, fire grate, ash storing base is characterized in that: be provided with a high temperature combustors at furnace lining place suitable for reading.

Be provided with inc irony burning circle at furnace lining place suitable for reading, be welded with four Steel bar racks under the burning circle, Steel bar rack is placed on the furnace lining; Furnace lining directly is made on the inboard wall of furnace body with potter's clay or inorganic fire proof material, form the following big burner hearth of little toroidal of hollow, at the furnace lining inwall from bottom to top bottom air inlet mouth is arranged, the sidewall air inlet that penetrates the furnace lining wall is arranged on the furnace lining outer wall, and there is a bossing on furnace lining top as firebreak near the outlet flue place; Burner basin inwall, not closed burning circle, Steel bar rack, firebreak and furnace lining common formation high temperature combustors suitable for reading.

High-temp combustion is indoor, and the moment cracking reaction takes place for red-hot burning circle working surface and the water in the diffusing coal, produces a large amount of water-gas, participates in burning; Simultaneously, superfine pulverized coal, imflammable gas eddy combustion have increased the holdup time of flue gas at fire door, reach the smoke abatement purpose.

The invention has the beneficial effects as follows: can improve burning of coal efficient, reduce and pollute, the protection environment.

Description of drawings

Fig. 1 is the three-dimensional profile construction schematic diagram that product of the present invention removes the burner basin.

Fig. 2 is the vertical view that product of the present invention removes the burner basin.

Fig. 3 is the A-A face cutaway view that has the burner basin among Fig. 2.

1. bells, 2. burner basins, 3. burning circles, 4. Steel bar racks, 5. firebreaks, 6. outlet flues, 7. furnace linings, 8. bottom air inlet mouths, 9. sidewall air inlets, 10. burner hearths, 11. bodies of heater, 12. fire grates, 13. ash storing bases among the figure.

The specific embodiment

As shown in Figure 1, furnace lining 7 usefulness potter's clay or inorganic fire proof material directly are made on body of heater 11 inwalls, form the following big burner hearth 10 of little toroidal of hollow; Furnace lining 7 inwalls have bottom air inlet mouth 8 from bottom to top, and the sidewall air inlet 9 that penetrates the furnace lining wall is arranged on furnace lining 7 outer walls; There is a bossing on furnace lining 7 tops as firebreak 5 near outlet flue 6 places; Be slightly less than furnace lining 7 inc burning circle 3 suitable for reading with the curved coiled internal diameter of φ 14mm screw-thread steel, the not closing section of burning circle 3 clips the firebreak 5 of projection, and 2 mouthfuls in the upper edge of burning circle 3 and burner basin be 15mm apart; The burning circle is welded with the Steel bar rack 4 of four high 19mm for 3 times, and Steel bar rack 4 is placed on the furnace lining 7.

We adjust the thickness of screw-thread steel and the height of Steel bar rack through test of many times, change the lower space of high temperature combustors, can change the eddy combustion degree; Adjust the furnace lining height, change the upper space of high temperature combustors, can change the eddy combustion degree equally.

In the concrete application,, adjust the shape and size of the height and the firebreak of burning circle size and quality, Steel bar rack, directly cylinder iron make the combustion chamber product that meets the corresponding type of furnace by corresponding size to the stove of different model.With the contrast of conventional coal stove, use the embodiment of the product of the cast iron type high temp combustion chamber that we make to economize on coal about 30%.If with the combustion chamber product of the same type that potter's clay or other inorganic fire proof material are made, effect is less better.We also find in the use, set up the product of high temperature combustors, and it is fast to ignite, and its fire time of returning does not adopt the fire time of returning of high temperature combustors coal stove to lack more than one times than routine behind the banking.

In conjunction with the embodiments, analyze burning of coal process in this programme:

I. a coal-based burning: coal adds from fire door, burning circle 3 is write out falsely coal, coal is subjected to hyperthermia radiation, the preheating of burner hearth 10, mix with the air that enters after the preheating from fire grate 12, bottom air inlet mouth 8, sidewall air inlet 9, coal-based burning, volume reduces behind the coal combustion, and red-hot burning circle 3 is equivalent to heating ring, continues to the cooker radiations heat energy.

II. coal high-temp combustion: in the present embodiment, burner basin 2 inwalls, not closed burning circle 3, Steel bar rack 4, firebreak 5 and furnace lining 7 common formation high temperature combustors suitable for reading, high temperature combustors is the center with burning circle 3, top is the space that burning circle 3 and burner basin 2 lower edges form, and the bottom is the space of burning circle 3 by interruption-forming on Steel bar rack 4 and the furnace lining 7.After coal-based the burning, flame is met firebreak 5 and is obstructed, and has changed burning direction, irony burning circle 3 intensifications of being heated, and the screw thread of burning circle 3 has further increased the flame burning area, the formation high temperature combustion zone.The high-temp combustion of coal need consume a large amount of oxygen, and at this moment, air enters additional from 2 mouthfuls of slits of burner basin, and coal is at the high temperature combustors eddy combustion.

III. smoke abatement: produce a large amount of superfine pulverized coals during high-temp combustion, simultaneously, the moment cracking reaction takes place with the water in the diffusing coal in red-hot screw thread working surface, produces a large amount of water-gas, and participation is burnt.Because the vortex effect of air-flow has increased the holdup time of flue gas at fire door, superfine pulverized coal fully burns, and reaches the smoke abatement purpose.

Claims

1. energy-conservation bituminous coal stove that removes, mainly comprise: bell, burner basin, outlet flue, firebreak, not closed irony burning circle, Steel bar rack, furnace lining, burner hearth, body of heater, fire grate, ash storing base is characterized in that: burner basin inwall, not closed irony burning circle, Steel bar rack, firebreak and furnace lining common formation high temperature combustors suitable for reading; Inc burning circle has screw thread, is welded with four Steel bar racks under the burning circle, and Steel bar rack is placed on the furnace lining.