CN87200699U

CN87200699U - Boiler with in two opposite directions burning mode

Info

Publication number: CN87200699U
Application number: CN 87200699
Authority: CN
Inventors: 陈星照
Original assignee: Beijing Daxing County River Camp Boiler Factory; BEIJING ENVERIONMENT PROTECTION TECHNIQUE AND EQUIPMENTS CENTRE
Current assignee: Beijing Daxing County River Camp Boiler Factory; BEIJING ENVERIONMENT PROTECTION TECHNIQUE AND EQUIPMENTS CENTRE
Priority date: 1987-01-26
Filing date: 1987-01-26
Publication date: 1987-10-21

Abstract

The utility model belongs to a burning boiler, which is characterized in that the burning device of the burning boiler adopts an arc fire grate to form the condition that in a same hearth, a center fire grate part does positive direction burning, and peripheric fire grate parts are reverse direction burning. The utility model has the advantages of positive and inverse two burning mode and good smoke prevention and dust control. Ringelmann blackness is less than 0.5 stage, and the heat efficiency of the boiler is 75%.

Description

Boiler with in two opposite directions burning mode

The utility model belongs to a kind of coal-burning boiler.

Common coal-burning boiler adopts forward combustion, be that fire bed is layered on the horizontal casting furnace grate, air is infeeded by the fire grate bottom, fresh fuel is added on the fire bed that is firing, and it is subjected to the hot heat temperature raising of conduction of the high-temperature flue gas of top and flame that the fervid fire bed of the radiation heating of brick wall and bottom upwards flows and fervid fire bed and destructive distillation is caught fire.Its firing rate is fast, and burner hearth conducts heat, the temperature height, and coal adapts to, but that fuel gas is separated out is too fast, and the oxygen supply deficiency flow to top heating surface cooling very soon and is difficult to after-flame, therefore has the over-emitting black exhaust problem, causes environmental pollution and energy waste.

For addressing these problems and having developed the reverse burning system, be that air is entered by fuel bed top, fresh fuel is added on the fire bed, through fire bed heat conduction and destructive distillation is caught fire, flue gas flows downward, fuel gas at first mixes with oxygen on top like this, can burn totally through fervid fire bed downwards, has solved the over-emitting black exhaust problem, but it is slow that the heating of this kind combustion method fuel is caught fire, coal adaptability is poor, and the upper furnace temperature is low, influences boiler output.

The purpose of this utility model is the problem that solves above-mentioned two kinds of combustion systems for comprehensive, improves the single combustion system of boiler and improves boiler efficiency, and the energy is saved in smoke abatement and dust control, reduces cost and has designed a kind of boiler that can carry out positive and negative burning in same stove.

Design of the present utility model is; Adopt a vertical fire coal boiler, it is mainly by smoke pipe, drum, and end socket, impact tube, parts such as fire grate are formed, and feature is, boiler grate is designed to an arc fire grate, and fire grate lower central position is provided with the center air compartment of a special sealing.Fire coal is added in the fire grate center and carries out forward combustion because fire grate is that arc tilts laterally, fuel can slide to the fire grate outside form around fervid fire bed district.The thermal-flame that forward combustion produces reaches, and the fuel gas of burning-out also will pass through fervid fire bed, burning-out once more all around before flowing out burner hearth.Institute's anoxic gas can replenish from part outside upper furnace door and the center air compartment, and this two places intake all is provided with fender plate and regulates on door, and the burning-out flue gas drains into the convection heating surface part from the fervid fire bed outside through smoke pipe.Like this, reached in same stove the center fire grate and partly be forward combustion, fire grate partly is reverse burning all around.

Below in conjunction with description of drawings embodiment.

Fig. 1 is the structural front view of forward and reverse combustion furnace

Fig. 2 is the structure left view of forward and reverse combustion furnace

Fig. 3 is the structure vertical view (A-A section) of forward and reverse combustion furnace

Fig. 4 is the structure vertical view (B-B section) of forward and reverse combustion furnace

Among the figure, (1) is impact tube, and (2) are end socket, (3) be last smoke-box, (4) are drum, and (5) are smoke pipe, (6) be hand-hole, (7) are smoke-box down, and (8) are anti-fire arch, (9) be the combustion chamber, (10) are coal feeding hole, and (11) are furnace bottom, (12) be fire grate, (13) are the center air compartment, and (14) are the deashing shutter, (15) be outer air compartment, (16) are mechanical air blast hole, and (17) are hand hole.(18) be last shoot door, (19) are fire tube.Drum and combustion chamber, fire tube is heated hydrospace (20) between the smoke pipe.

The flue gas of this boiler moves towards, and fire coal is dropped into by coal feeding hole (10), burns on fire grate, and center air compartment (13) is blown by mechanical air blast hole (16).Combustion flame rises to anti-fire arch (8), return down fervid burning zone then through the fire grate both sides, burning-out after all around 8 square fire tubes (19) upwards enter down smoke-box (7), flue gas upwards enters smoke-box (3) through 7 smoke pipes (5) from following smoke-box, enters chimney through impact tube (1) then.

The boiler with in two opposite directions burning mode that the utility model provides namely has forward combustion and catches fire soon, heats, and the advantage that coal adaptability is strong has again not over-emitting black exhaust of reverse burning, the advantage of efficiency of combustion height. Its lingemann blackness is less than 0.5 grade, and boiler thermal output reaches 75%, and the arc fire grate structure is simple, and is easy to manufacture, and convenient various small boilers use.

Claims

1, a kind of burning boiler comprises drum [4], end socket [2], and impact tube [1], fire tube [19], smoke pipe [5], fire grate parts such as [12] is characterized in that it adopts an arc fire grate [12].

2, by the described burning boiler of claim 1, it is characterized in that center air compartment (13) being set at fire grate lower central position.