CN2823840Y

CN2823840Y - Coal gasification burning boiler

Info

Publication number: CN2823840Y
Application number: CNU2005201043265U
Authority: CN
Inventors: 郭科新
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-26
Filing date: 2005-07-26
Publication date: 2006-10-04
Anticipated expiration: 2015-07-26

Abstract

The utility model relates to a coal gasification burning boiler, which has the purpose for providing a coal gasification burning boiler with quick temperate rise of ignition, smoke and dust elimination, environmental protection and energy saving. The utility model is mainly provided with a primary combustion boiler which is the existing ordinary boiler. The utility model is characterized in that the outside wall of a boiler shell of the primary combustion boiler is fixedly connected with an igniting furnace, and a fire grate, a coal throwing port and an ash removing port are arranged in the igniting furnace; a combustion chamber A of the primary combustion boiler is communicated with the combustion chamber B of the ignite furnace through two communicating pipes, a furnace arch A is arranged in the primary combustion boiler and is arranged between the two communicating pipes, and thus, two hearths which are not directly communicated are formed in the primary combustion boiler; the primary combustion boiler, the lower part of a grate of the igniting furnace and the communicating pipe B of the ignition furnace are correspondingly arranged on the boiler shell, and are respectively provided with a wind supply pipe. The furnace wall of the igniting furnace is composed of a supporting tube which is composed of a plurality of convection banks which are communicated and a fire-proof wall. The utility model has the advantages of easy ignition, quick temperature raise, large power, sufficient combustion of fuels, smoke and dust elimination, energy saving and environment protection.

Description

The coal gasification combustion boiler

Affiliated technical field

The utility model belongs to a kind of burning boiler, particularly a kind of coal gasification combustion boiler with main burner and ignition furnace.

Background technology

Conventional boiler makes the exhaust gas temperature height because fuel combustion is insufficient, over-emitting black exhaust reduces the thermal efficiency, wastes energy, and the dust concentration height causes environmental pollution in the flue gas.Particularly in the incipient stage of ignition of the boiler and a large amount of coals, because temperature is low in the stove, make fuel combustion insufficient, over-emitting black exhaust contains a large amount of fuel gas in the cigarette of discharge, and it is slow to heat up.

Summary of the invention

The purpose of this utility model provide a kind of firing up rapidly, the coal gasification combustion boiler of smoke abatement and dust control, environmental protection and energy saving.

The purpose of utility model is realized by following technical scheme: a kind of coal gasification combustion boiler, has main burner, just common existing boiler, be characterized in: on the shell lateral wall of main burner, be fixedly connected with ignition furnace, the ignition furnace middle part is provided with fire grate, with the fire grate is the boundary, the shell first half at ignition furnace is provided with coal feeding hole, Lower Half is provided with cleaning door, the combustion chamber A of main burner and the combustion chamber B of ignition furnace were connected by two communicating pipes, in main burner, be provided with chimney arch A, chimney arch A placed between two communicating pipes, make and form two burner hearths that directly do not communicate, main burner in the main burner, the fire grate below of ignition furnace and the communicating pipe B corresponding position of ignition furnace are respectively equipped with the air feed pipe on shell.

Between two communicating pipe of ignition furnace, be provided with overshooting shape chimney arch B.

Stay pipe and refractory wall that the furnace wall of ignition furnace is made up of the convection bank of some connections constitute, and refractory wall outside.

The course of work and the principle thereof of present technique are: the coke of lighting ignition furnace earlier, after the interior temperature of ignition furnace is raise rapidly, light the coal of main burner, coal is drying in the A of the combustion chamber of main burner, destructive distillation produces flue gas, enter the combustion chamber B of ignition furnace through communicating pipe A, the flue gas of main burner further decomposes gasification under the high temperature of ignition furnace, obtain abundant, thorough after-flame, get back to the convection tube place of main burner then through another communicating pipe B, behind the convection tube dust-collecting and heat exchanging, discharge, the interior water of convection tube is heated up rapidly.When the coal after-flame, a part of charcoal fire of getting main burner makes it keep high temperature to ignition furnace combustion chamber B, and the flue gas that main then burner stoking produces enters ignition furnace combustion chamber B, and process circulates repeatedly like this.

The purpose of establishing overshooting shape chimney arch B between two communicating pipe of ignition furnace is to make that temperature remains on the condition of high temperature in the ignition furnace, the burning of the inner flue gas of the stove that helps igniting, through the designer repeatedly long period of experiments obtain.The effect of the stay pipe in the ignition furnace is for strengthening ignition furnace intensity and making heat exchange more abundant.

The utility model has the advantages that: 1, because the flue gas of main burner enters ignition furnace, flue gas has at high temperature obtained fully, thoroughly burning, boiler thermal output is significantly improved, can save more than 50% than moulded coal stove, can save more than 70% than oil oven, steam stove and electric furnace, for the user has saved fund greatly.2, behind the full combustion of fuel again through convection tube smoke abatement and dust control voluntarily, so it is colourless to discharge fume, the smoke evacuation lingemann blackness be the 0-1 level, dust concentration reaches discharging standards in the flue gas.3, because gas-fired, make ignition of the boiler easy, on fire fast, heat up rapidly, power is big.4, the ignition furnace structure is little, cost is low, manufacturing process is simple.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1.

1 airducts, 2 refractory walls, 3 secondary air channels, 4 stay pipes, 5 combustion chamber B, 6 tertiary-air pipe, 7 ignition furnaces, 8 fire grates, 9 coal feeding holes, 10 cleaning doors, 11 combustion chamber A, 12 main burners, 13 communicating pipe A, 14 chimney arch A, 15 chimney arch B, 16 communicating pipe B, flue among the figure.

The specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawing illustrated embodiment.

As Fig. 1, Fig. 2, shown in Figure 3, the applicant has implemented a kind of horizontal coal gasification combustion boiler, it is by having main burner 12, just common existing traditional horizontal boiler, its structure is a prior art, fire grate is also arranged, cleaning door, coal feeding hole, see the burner door, convection tube, flue, structures such as tank, on the shell lateral wall of main burner 12, be fixedly connected with ignition furnace 7, the ignition furnace middle part is provided with fire grate 8, with the fire grate is the boundary, the shell first half at ignition furnace is provided with coal feeding hole 9, Lower Half is provided with cleaning door 10, the combustion chamber A11 of main burner and the combustion chamber B5 of ignition furnace being connected communicating pipe by two horizontal parallel, be respectively communicating pipe A13, communicating pipe B16, communicating pipe A13 is a smoke inlet, communicating pipe B16 is an exhanst gas outlet, in main burner 12, be provided with chimney arch A14, chimney arch A14 placed between two communicating pipes, make and form two chambeies that directly do not communicate in the main burner, main burner, the fire grate below of ignition furnace and the communicating pipe B corresponding position of ignition furnace are respectively equipped with the air feed pipe on shell, be respectively airduct 1 one time, secondary air channel 3, tertiary air 6.Be provided with overshooting shape chimney arch B15 between two communicating pipe of ignition furnace, chimney arch A14 and chimney arch B15 are respectively fixed on the flue 17.Stay pipe 4 and refractory wall 2 that the furnace wall of ignition furnace is made up of the convection bank of some connections constitute, refractory wall 2 outside, stay pipe 4 has supporting role heat exchange action is arranged again.

When main burner was used vertical boiler, just communicating pipe A and communicating pipe B became plumbness up and down by level, and other technology is constant, makes it to become vertical coal gasification combustion boiler.

Claims

1, a kind of coal gasification combustion boiler, has main burner, just common existing boiler, it is characterized in that: on the shell lateral wall of main burner, be fixedly connected with ignition furnace, the ignition furnace middle part is provided with fire grate, with the fire grate is the boundary, the shell first half at ignition furnace is provided with coal feeding hole, Lower Half is provided with cleaning door, the combustion chamber A of main burner and the combustion chamber B of ignition furnace were connected by two communicating pipes, were provided with chimney arch A in main burner, and chimney arch A placed between two communicating pipes, make and form two burner hearths that directly do not communicate, main burner in the main burner, the fire grate below of ignition furnace and the communicating pipe B corresponding position of ignition furnace are respectively equipped with the air feed pipe on shell.

2, coal gasification combustion boiler as claimed in claim 1 is characterized in that: be provided with overshooting shape chimney arch B between two communicating pipe of ignition furnace.

3, as claim 1,2 described coal gasification combustion boilers, it is characterized in that: stay pipe and refractory wall that the furnace wall of ignition furnace is made up of the convection bank of some connections constitute, and refractory wall outside.