CN2379750Y

CN2379750Y - Boiler using anthracite as fuel

Info

Publication number: CN2379750Y
Application number: CN 99215882
Authority: CN
Inventors: 赵会棠
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-03
Filing date: 1999-07-03
Publication date: 2000-05-24
Anticipated expiration: 2009-07-03

Abstract

The utility model relates to a boiler using anthracite as fuel. The utility model is characterized in that a water jacket which is integral is arranged at the front side, the rear side, the left side, the right side, and the upper side of a hearth; the water jacket at one side of the left side and the right side of the rear lower part of the hearth is provided with a flue port; the inner part of the arched water jacket at the upper side is uniformly distributed with longitudinal smoke pipes, and the front part and the rear part of the arched water jacket are respectively provided with a front flue and a rear flue; the outer side of the flue port is provided with convection pipes, the rear lower end of the flue port is provided with a water inlet pipe which is communicated with the lower part of the water jacket, and the upper end is communicated with the upper part of the water jacket; the upper part of the water jacket is provided with a water outlet pipe; the inner part of the hearth is provided with a front boiler arch and a rear boiler arch which are in an inversed Y shape; a grate becomes narrow and long. The boiler can sufficiently utilize heat, and the thermal efficiency reaches eighty per cent; compared with a boiler using soft coal as fuel, the utility model has the advantages of economy, energy saving, less coal dust, low pollution nuisances, small volume, and light weight; the utility model is an ideal boiler.

Description

Anthracite-fired boiler

The utility model relates to boiler, be a kind ofly protect environment, reduce to pollute, anthracite-fired boiler that the thermal efficiency is high.

At present, the normal-pressure boiler no matter industry is still lived and warmed oneself and use, it mostly is bituminous coal fired boiler, be to constitute by coal bunker, fire grate, burner hearth, ashpit, water jacket, convection tube and exhaust opening, this boiler furnace floss hole is at rear side, about water jacket and rear side be equipped with convection tube, the outside is provided with fire-resistant, heat-insulation layer, the only suitable bituminous coal that burns of this boiler, be not suitable for burning anthracite, the bituminous coal flue dust is big, pollutant atmosphere, to the anthracite producing region, it is uneconomical also will to transport bituminous coal from the other places, and this boiler volume is big, and the refractory-lined ovens wall area is big, the refractory material consumption is big, and the thermal efficiency is low.

The purpose of this utility model provides a kind of anthracite-fired boiler, is not suitable for burning anthracite to solve bituminous coal fired boiler, and it is big to burn the bituminous coal flue dust, pollutant atmosphere, uneconomical, and boiler volume is big, problems such as the refractory-lined ovens wall area is big, and the refractory material consumption is big, and the thermal efficiency is low.

The purpose of this utility model is achieved in that this boiler is to be made of coal bunker, fire grate, burner hearth, ashpit, water jacket, convection tube, exhaust opening.Water jacket is whole water jacket, be arranged on the burner hearth all around and above, one side water jacket is provided with floss hole about the burner hearth rear lower, top arch water jacket leading section is provided with preceding flue, be evenly equipped with vertical smoke pipe in the top water jacket, there is rear pass the smoke pipe back, and exhaust opening is arranged on the rear pass; The floss hole outside is provided with convection tube, and there is water inlet pipe the convection tube posterior end, and it is connected with the water jacket bottom, and the convection tube upper end is connected with water jacket top, and outlet pipe is arranged at water jacket top, is provided with forward and backward chimney arch in the burner hearth, cooperates to be herringbone.

Fire coal burns on fire grate, flame quirk through between forward and backward chimney arch enters burner hearth, then backward, go out from floss hole and to enter two return, forward, upwards carry out heat exchange, enter three backhaul smoke pipes through preceding flue again, carry out heat exchange once more with convection tube, through the rear pass exhaust opening, deduster is discharged from chimney.

The existing bituminous coal chimney arch of forward and backward chimney arch reduces 20-30% respectively, back chimney arch lengthening 10-20%.

The existing narrow 10-20% of bituminous coal fire grate of fire grate, lengthening 10-20%.

This utility model compared with prior art has the following advantages: 1. water jacket is whole water jacket, be arranged on the burner hearth all around and above, the burner hearth Btu utilization is abundant; 2. be evenly equipped with horizontal smoke pipe in the upper water sleeve, the flue gas heat exchange is abundant, and exhaust gas temperature is low; 3. one side has convection tube about burner hearth, and convection tube and fire-resistant furnace wall are few, and the refractory material consumption is few, and the boiler thermal output height can reach 80%; 4. the fire grate lengthening that narrows down, the front and back chimney arch reduces, and back chimney arch lengthening can satisfy that the anthracite flue gas is lacked, burning time is long, and ash content is few, the characteristics that calorific value is high, heat energy utilization is abundant; 5. boiler volume little, in light weight, take up an area of less, the material saving; 6. burn anthracite than bituminous coal economy, save the energy; 7. it is few to burn the anthracite flue dust, pollution-free, and public hazards are few.

Be described further below in conjunction with accompanying drawing:

Fig. 1 anthracite-fired boiler structural representation;

Fig. 2 anthracite-fired boiler side diagrammatic sketch.

Among Fig. 1-2, coal bunker (15), convection tube (17), ashpit (3), maintenance fire door (4), fire-resistant furnace wall (18), heat-insulation layer (8), steam vent (9) are same as the prior art; Ashpit is arranged on the fire grate back, above the back chimney arch (2), below the convection tube (17) and on the front and back flue (11), (6); Fire grate (1) 10-20% that narrows down, lengthening 10--20%; Water jacket (12) is whole water jacket, be arranged on burner hearth (13) all around and above, the burner hearth Btu utilization is abundant, one side water jacket is provided with floss hole (5) about the burner hearth rear lower, forward and backward front and back flue (11), (6) of being provided with of top arch water jacket, be evenly equipped with smoke pipe (10) in the arch water jacket, exhaust opening (7) is arranged on the rear pass (6), connect deduster, chimney; Floss hole (5) outside is provided with convection tube (17), fire-resistant furnace wall (18), the convection tube posterior end has water inlet pipe (19) to be connected with the water jacket bottom, its upper end is connected with water jacket top, outlet pipe (16) is arranged at water jacket top, steam vent (9) is arranged on the top, chimney arch (14) before and after being provided with in the burner hearth (13), (2), reduce 20-30% than chimney arch before and after the bituminous coal, back chimney arch lengthening 10-20%, before, back chimney arch cooperates and is the herringbone arch, further impels the preheating zone to burn as early as possible, is equipped with heat-insulation layer (8) at water jacket (12) and fire-resistant furnace wall (18) outside, in order to lift by crane conveniently, going up solid welding at water jacket (12) has hanger (20).

Claims

1, a kind of anthracite-fired boiler, be to constitute by coal bunker (15), fire grate (1), ashpit (3), water jacket (12), burner hearth (13), convection tube (17), exhaust opening (7), it is characterized in that: water jacket (12) is whole water jacket, be arranged on the burner hearth all around and above, the left and right side water jacket of burner hearth rear lower is provided with floss hole (5), top arch water jacket leading section has preceding flue (11), rearward end has rear pass (6), be evenly equipped with vertical smoke pipe (10) in the water jacket, exhaust opening (7) is arranged on the rear pass; The floss hole outside is provided with convection tube (17), and its posterior end has water inlet pipe (19) to be connected with the water jacket bottom, and its upper end is connected with water jacket top, and outlet pipe (16) is arranged at water jacket top, and chimney arch (14), (2) before and after having in the burner hearth (13) cooperate to be herringbone.

2, boiler according to claim 1 is characterized in that: forward and backward chimney arch (14), (2) reduce 20--30% respectively than the bituminous coal chimney arch, back chimney arch (2) lengthening 10--20%.

3, anthracite-fired boiler according to claim 1 is characterized in that: fire grate (1) is than the narrow 10--20% of bituminous coal fire grate, and 10--20% extends.