CN201277704Y

CN201277704Y - Full water jacket coal burning boiler with flashback staged grate

Info

Publication number: CN201277704Y
Application number: CNU2008200147044U
Authority: CN
Inventors: 马秀俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-11
Filing date: 2008-08-11
Publication date: 2009-07-22
Anticipated expiration: 2018-08-11

Abstract

The utility model relates to a reverse-combustion, step-grate, full-jacket and coal-burning boiler. A front combustion chamber and a rear combustion chamber are arranged in the front of a boiler body, and water jacket baffles arranged in the boiler body divide the boiler body into a plurality of parts; moreover, a flue gas diversion hole is arranged on the front water jacket baffle, and the water jacket baffles divide the boiler body into flues in a five return path structure so that flue gas is dedusted twice under the action of gravity, and the dedusting effect is good. A herringbone dust baffle and a plurality of heat exchange water tubes are arranged at the rear part of the boiler body, a diversion fan hole is arranged on the outer wall of a rear dedusting chamber, and floor-type water jacket interlayers are respectively arranged around the boiler body. The utility model has the advantages of energy saving and environmental protection, widens the use range of coal types for reverse-combustion boilers and improves the utilization rate of inferior coal.

Description

Backfire, the full water jacket coal-burning boiler of staged fire grate

Technical field

The utility model relates to a kind of boiler, specifically, relates to a kind of backfire, the full water jacket coal-burning boiler of staged fire grate.

Background technology

Boiler is an important heat supply equipment in the national economy, and industry and civil heating all need to supply with a large amount of heat energy, and under the trend that energy prices rise steadily and environmental requirement is more and more higher, energy-conservation and clean burning just becomes extremely important.At present, though backfire gasification furnace commonly used has been done improvement on energy-conservation and clean burning, the coal seam is thick during owing to backfire, and the flue gas resistance coefficient is big, often ature of coal is required high, can not sintering the burnt and strong coal of clinkering property, and when banking up a fire, the past fire door is smoldered and is flowed coal tar, more especially the place that does not have high-quality lump coal, boiler can only direct combustion, not only wastes fuel, and a large amount of over-emitting black exhaust, contaminated environment, 30% dried cover between conventional boiler inner bag and the outer courage during boiler operatiopn, is not only lost heat, and water capacity is little, the bathing of the warming up needs of stove incompatiblely, conventional boiler does not have interior dust arrester, and dedusting can only be finished by deduster.

Summary of the invention

The purpose of this utility model provided a kind of rational in infrastructure, efficiency of combustion is high, pollute the little full water jacket coal-burning boiler of backfire, staged fire grate.

For achieving the above object, the utility model is realized by the following technical solutions:

Backfire, the full water jacket coal-burning boiler of staged fire grate, the body of heater front portion is provided with two combustion chambers, and preceding combustion chamber and after-burner are provided with the water leg dividing plate body of heater are divided into several parts in the body of heater, and anterior water leg dividing plate is provided with the flue gas pod apertures.

Described water leg dividing plate is divided into five return structures of flue with body of heater, makes flue gas twice dedusting under the gravity effect, good dedusting effect.

Be provided with double-deck ladder fire grate in the described combustion chamber, bottom, preceding combustion chamber (5) is provided with inclined grate (4-1), be provided with inclined grate (4-2) in the after-burner (8), and fire grate (4-2) and fire grate (4-1) be for being obliquely installed in the other direction, fire grate (4-2) is arranged at the below of fire grate (4-1).

Upper of furnace body is provided with the sun-roof dust-cleaning door of going up.

Dust-settling compartment and back dust-settling compartment before the body of heater rear portion is provided with.

The shell mechanism of body of heater is the full water jacket samdwich structure of console mode.

Compared with prior art, the beneficial effects of the utility model are:

1, the function of the entire infrastructure of body of heater is all obeyed energy-saving and environmental protection, principle easily.Burning is smokeless, and dustless, energy-conserving and environment-protective have reduced pollution, have protected environment.

2, widened the scope of application of anti-burning stove coal, can make the area of no fat coal can use environment-protection boiler, facilitation has been played in environmental protection for the entire people.

3, can select spontaneous firing and forced burning dual mode for use, improve the utilization rate of colm significantly, under the situation of equal heat supply,, save 20%, meet economizing type and feature of environmental protection social requirement than anti-burning stove than direct combustion stove fuel savings 50%.

4, adopt interior dust arrester, can use the user to reduce support expense, reduce floor space simultaneously.

Description of drawings

Fig. 1 is the structural representation of backfire, the full water jacket coal-burning boiler of staged fire grate.

Fig. 2 is the vertical view of backfire, the full water jacket coal-burning boiler of staged fire grate.

The left view of Fig. 3 backfire, the full water jacket coal-burning boiler of staged fire grate.

Among the figure: 1, firing door 2, clean-out door 3, ashpit 4-1, fire grate 4-2, fire grate 5, preceding combustion chamber (coal store) 6, water leg dividing plate 6-1 (band flue gas pod apertures) water leg dividing plate 7, poke door 8, after-burner 9, flue gas pod apertures 10, last dust-cleaning door 11, impact tube 12, chevron shaped dust board 13, air-introduced machine mouth 14, back dust-settling compartment 15, following dust-cleaning door 16, preceding dust-settling compartment 17, the heat exchanging water pipe 18, flue gas change-over panel 19, air register 20, water jacket samdwich

The specific embodiment

See Fig. 1, Fig. 2, Fig. 3, the body of heater front portion comprises preceding combustion chamber 5 and after-burner 8, dust-settling compartment 16 and back dust-settling compartment 14 before the body of heater rear portion comprises, this body of heater has adopted the coal-fired mode of backfire, boiler is that staged fire grate, inside and outside furnace shell become the full water jacket samdwich structure of console mode, the top of body of heater is provided with dust-cleaning door 10 and impact tube 11, establish flue gas change-over panel 18 in the impact tube 11, the purpose of flue gas change-over panel 18 is when spontaneous firing or machinery burning, adjust exhanst gas outlet by the flue gas change-over panel of regulating on the impact tube 11 18, the bottom is provided with two following dust-cleaning doors 15.Preceding combustion chamber 5, after-burner 8 sidewalls are provided with firing door 1, clean-out door 2, ashpit 3, see Fig. 3, and firing door 1 and clean-out door 2 are provided with air register 19.Be provided with inclined grate 4-1 in the preceding combustion chamber 5, after-burner 8 bottoms are provided with open type and vertically partly arrange casting furnace grate 4-2, two fire grates become reversed dip, leave enough gaps between two-layer fire grate, be convenient to hook and go out big clinker, be provided with water leg dividing plate 6 in the body of heater, the water leg dividing plate is divided into body of heater five return structures of flue, make flue gas twice dedusting under the gravity effect, good dedusting effect.

Have flue gas pod apertures 9 on the water leg dividing plate 6-1, coal gas and the tar that is produced in the preceding coal bunker can be drawn into burning in the after-burner 8 when banking up a fire, can be after-burner 8 during normal combustion and replenish secondary wind, poke door 7 is located at the bottom of water leg dividing plate 6-1 in the preceding combustion chamber 5, the coal of 5 cokings of preceding combustion chamber or carbonization can be dialled in after-burner 8 by poke door 7 and burn, the body of heater rear portion is provided with chevron shaped dust board 12 and a plurality of heat exchanging water pipe 17, back dust-settling compartment 14 outer walls are provided with air-introduced machine mouth 13, are provided with console mode water jacket samdwich 20 around the body of heater.

Flue gas after the combustion chambers burn must could be discharged by impact tube through four backhauls, during forced burning, flue gas could be discharged through five backhauls, so not only make flue gas flow obtain effective prolongation, flue gas is in the process of iterate simultaneously, 12 pairs of ash-laden gas of formed eddy current and chevron shaped dust board separate when utilizing flue gas to turn, and utilize 13 burnings of air-introduced machine mouth can overcome flue gas resistance effectively, make flue gas flow rate accelerate to be convenient to depositing dust simultaneously.

Claims

1, backfire, the full water jacket coal-burning boiler of staged fire grate, it is characterized in that, the body of heater front portion is provided with two combustion chambers, preceding combustion chamber (5) and after-burner (8), be provided with water leg dividing plate (6) in the body of heater body of heater is divided into several parts, and anterior water leg dividing plate (6-1) is provided with flue gas pod apertures (9).

2, backfire according to claim 1, the full water jacket coal-burning boiler of staged fire grate is characterized in that described water leg dividing plate (6) is divided into body of heater five return structures of flue.

3, backfire according to claim 1, the full water jacket coal-burning boiler of staged fire grate, it is characterized in that, be provided with double-deck ladder fire grate in the described combustion chamber, bottom, preceding combustion chamber (5) is provided with inclined grate (4-1), be provided with inclined grate (4-2) in the after-burner (8), and fire grate (4-2) is obliquely installed for opposite direction with fire grate (4-1), and fire grate (4-2) is arranged at the below of fire grate (4-1).

4, backfire according to claim 1, the full water jacket coal-burning boiler of staged fire grate is characterized in that, upper of furnace body is provided with the sun-roof dust-cleaning door (10) of going up.

5, backfire according to claim 1, the full water jacket coal-burning boiler of staged fire grate is characterized in that, the body of heater rear portion is provided with preceding dust-settling compartment (16) and back dust-settling compartment (14).

6, backfire according to claim 1, the full water jacket coal-burning boiler of staged fire grate is characterized in that, the shell mechanism of body of heater is the full water jacket samdwich structure of console mode.