CN2483609Y - Smoke eliminating vertical boiler using coal as fuel - Google Patents

Abstract

The utility model discloses a coal-fired smoke-eliminating vertical boiler. It improves the original vertical boiler, the grate bars in the middle are arranged in straight lines and parallel, the surrounding bars are arranged in concentric circles, and the top of the furnace is equipped with a heat storage device; the furnace is equipped with 2 to 5 layers of air supply. As for the air supply device, a cylindrical wind blocking device is arranged under the grate bars arranged in a straight line. It has the advantages of compact and reasonable structure, sufficient coal combustion, energy saving, easy maintenance, good effect of smoke and dust removal, and conforms to national environmental protection requirements.

Description

Coal-fired smoke elimination vertical boiler

The utility model relates to a coal-fired smoke-eliminating vertical boiler, which belongs to a vertical boiler.

Most of the existing coal-fired vertical boilers are air-supplied under the grate. This kind of boilers have insufficient combustion, low efficiency, and the concentration of flue gas and dust discharged from the chimney is high, which cannot meet the national environmental protection requirements. There is an air supply port in the furnace, which is helpful to the combustion of coal and burns more fully, but this kind of air supply cannot form an air curtain, and there is still a large amount of smoke and dust discharged from the chimney.

The purpose of the utility model is to overcome the deficiencies in the background technology and provide a coal-fired smoke-elimination vertical boiler with good smoke and dust removal effect, sufficient coal combustion, energy saving, reasonable structure and easy maintenance.

The purpose of this utility model is achieved in that it includes a furnace body, water inlet pipe, water outlet pipe, furnace door, hearth, fire grate, ash cleaning door, bellows, chimney, etc., and the middle furnace bars of the fire grate are arranged in parallel in a straight line. The surrounding furnace bars are arranged in concentric circles, and there are 2 to 5 layers of air supply devices in the furnace; a heat storage device is installed on the top of the furnace; a cylindrical wind blocking device is installed below the parallel arranged furnace bars.

The purpose of this utility model can also be achieved through the following technical measures: the air supply device is composed of an air supply pipe and an air nozzle; layer to the wind. The heat storage device is hemispherical and fixed on the partition. The bellows are living bellows placed on the furnace body below the grate. The bellows are disc-shaped with a partition in the middle and divided into upper and lower chambers. There are air supply holes, and an air nozzle is arranged on the inner wall of the basement.

Compared with the prior art, the utility model has the following advantages:

1. Compact and reasonable structure;

2. Since the grate adopts the middle grate to be arranged in a straight line and parallel, and the surrounding grate is arranged in concentric circles, the two are combined to form a grate, and a cylindrical wind blocking device is provided under the linear arrangement, and the concentric grate part and The direction of the blast is corresponding, thereby increasing the air supply volume under the grate, so that the coal above is fully combusted, forming a high-temperature combustion zone, and the part arranged in parallel in a straight line is insufficient due to insufficient air supply, so that the coal on this part of the grate is at a high temperature. Under the dry distillation, the combustible gas produced is completely burned under the action of the air curtain, so the coal burns fully and saves coal;

3. Since there are 2 to 5 layers of air supply devices in the furnace, that is, multi-layer air supply pipes are arranged around the inner tank of the combustion zone, and the air nozzles of multiple air supply pipes blow air to the boiler at the same time during combustion, forming a multi-layer Air curtain, the flue gas produced by the coal combustion on the grate stays in the furnace under the obstruction of the air curtain, and continues to burn under the condition of high temperature and oxygen addition. The pure hot air breaks through the air curtain and enters the convective heat exchange area for heat exchange, thus improving the thermal efficiency, and the smoke and dust removal effect is good, which fully meets the national environmental protection requirements;

4. Since there is a heat storage device on the top of the furnace to adjust the temperature of the furnace, when the coal in the furnace burns normally, the temperature of the furnace is high, and the heat storage device absorbs heat for storage. Heat release is performed to increase the temperature of the furnace, thereby realizing rapid heating of the furnace for combustion.

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is the utility model bellows structure schematic diagram

Fig. 3 is a schematic diagram of the structure of the utility model fire grate

In the figure: horizontal water pipe 1, water jacket 2, clapboard 3, heat storage device 4, air supply pipe 5, water inlet pipe 6, air supply pipe 7, wind blocking device 8, dust cleaning door 9, air volume regulating valve 10, air supply pipe Tuyere 11, bellows 12, fire grate 13, furnace door 14, air nozzle 15, furnace 16, liner 17, shell 18, outlet pipe 19, chimney 20, air supply hole 21

Describe the utility model in detail below in conjunction with accompanying drawing and embodiment:

It is improved on the basis of the existing vertical boiler. As shown in Figure 1, the furnace body is a double-layer structure of an outer shell 18 and an inner tank 17, with a water jacket 2 in between, and a partition is provided in the middle of the inner tank 17. 3. Divide the boiler into a convective heat transfer zone and a combustion zone (furnace 16). The convective heat transfer zone has a horizontal water tube structure in the liner. A water outlet pipe 19, a furnace door 14 and a water inlet pipe 6 are arranged at the lower part of the furnace body, and the water inlet pipe 6 communicates with the water jacket 2. The top of the furnace 16 is provided with a heat storage device 4, which is hemispherical and made of refractory material. The straight lines are arranged in parallel, and the surrounding furnace bars are arranged in concentric circles, as shown in Figure 3. Bellows 12 is a living bellows, its structure as shown in Figure 2, it is placed on the body of heater below fire grate 13, bellows 12 is disc-shaped, is provided with blower port 11 and is connected with blower, is provided with dividing plate in the middle of bellows, It is divided into upper and lower chambers, two air volume regulating valves 10 are provided on the bellows 12 corresponding to the upper and lower chambers, and an upwardly inclined air nozzle 7 is provided on the inner wall of the lower chamber for feeding the fire grate 13 lower parts. The top of the upper chamber is provided with a plurality of air supply holes 21, and the upper chamber communicates with the air supply pipe 5 through the air supply holes 21. There are 2 to 5 layers of air supply devices for air supply in the furnace 16. The air supply device is composed of an air supply pipe 5 and an air nozzle 15. The air supply nozzles 15 on the same horizontal line on the air supply pipe 5 form a layer of air supply. The utility model Give wind to the third floor. A cylindrical wind-blocking device 8 is provided below the grates 13 arranged in parallel, and a dust-cleaning door 9 is provided at the bottom of the furnace body.

Claims (4)

1, a kind of coal-fired smoke elimination vertical boiler comprises body of heater, water inlet pipe, outlet pipe, fire door, burner hearth, fire grate, shoot door, bellows, chimney, it is characterized in that:

Fire bars in the middle of a, the fire grate is that straight line parallel is arranged, and fire bars on every side is that concentric circles is arranged;

Establish 2～5 layers of wind apparatus of giving of giving wind in b, the burner hearth;

C, roof of the furnace are provided with heat-storing device;

D, fire grate fire bars below arranged in a straight line are provided with a columnar choke device.

2, coal-fired smoke elimination vertical boiler according to claim 1 is characterized in that being chewed by ajutage and wind to wind apparatus and forms, and ajutage is communicated with chamber on the bellows by the wind pushing hole of chamber on the bellows, and the wind on the same level is chewed and constituted one deck and give wind.

3, coal-fired smoke elimination vertical boiler according to claim 1 is characterized in that heat-storing device is a hemispherical, is fixed on the dividing plate.

4, coal-fired smoke elimination vertical boiler according to claim 1 is characterized in that bellows place on the body of heater of fire grate below, and bellows are disc, and the centre has dividing plate to be divided into upper and lower two Room, and top, last chamber is provided with the air-supply oral pore, and following chamber interior walls is provided with wind and chews.

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