CN2036638U

CN2036638U - Multipurpose atmospheric smoke-free burning boiler

Info

Publication number: CN2036638U
Application number: CN 88216787
Authority: CN
Inventors: 林彦奇
Original assignee: Liaoning environmental protection research institute
Current assignee: Liaoning environmental protection research institute
Priority date: 1988-08-17
Filing date: 1988-08-17
Publication date: 1989-04-26

Abstract

The utility model belongs to a normal pressure boiler. The utility model is mainly characterized in that the side of a furnace door on a single layer grate is provided with a dry distillation chamber and a secondary combustion chamber provided with a secondary air duct on the side, and the dry distillation chamber is communicated with the secondary combustion chamber through a passageway. The utility model has the characteristics of smokeless combustion, high thermal efficiency, suitability of various coal, simple structure, low manufacturing cost, convenient operation, etc.

Description

Multipurpose atmospheric smoke-free burning boiler

The utility model is to belong to normal-pressure boiler.

The coal fired boiler that is used for heat supply water, steam, most smoke densities are big, even surpassed discharging standards, not only environment caused severe contamination, and because burning is insufficient, wasted a large amount of energy.The combustion system that adopts double-layer grate is also arranged at present, basically realized smokeless combustion, but because the heat absorption of the water in the water pipe furnace grate of upper strata, cause the coal ignition condition above the upper grate poor, influenced combustion efficiency, and this stove is selectively to coal, for example, the coal that ash fusion point is low easily burns the coal seam, big bituminous coal does not then reach smokeless effect fully, and the coal of small grain size more is not suitable for using; Moreover the upper furnace door position of this stove is higher, is unfavorable for operation, and therefore, the majority operation personnel are in fact without upper fire-grating, and this that is to say that the boiler of this boiler being used as traditional individual layer fire grate has equally used.

The purpose of this utility model is exactly at the problems referred to above, designs a kind of thermal efficiency height, easy and simple to handle, the normal pressure smokeless combustion boiler that is suitable for using various coals.

Boiler of the present utility model comprises chimney, pyrotechnics pipe, hydroecium, water jacket, burner hearth, individual layer fire grate, an air compartment, and its major technique is characterised in that above the individual layer fire grate: door side has the secondary combustion chamber that destructive distillation chamber, side have secondary air duct; The destructive distillation chamber communicates with secondary combustion chamber by passage.

Coal obtains giving heat in that destructive distillation is indoor, after drying, destructive distillation, the disassociation, discharge fuel gas, fuel gas burns in the process of passing red-hot carbon fire bed, coke that coal produces after destructive distillation and unburnt fuel gas enter secondary combustion chamber by passage, because secondary wind enters into secondary combustion chamber through secondary ventilating ducting, makes coke and fuel gas be able to abundant burning.Certainly, the coal storage floor of destructive distillation chamber is thick more, and combustion efficiency is good more.

Fig. 1 is the structural representation of boiler of the present utility model.

1 backwater, filling pipe, 2 blow-off pipes, 3 individual layer fire grates, 4 poke fire clean-out door, 5 secondary combustion chambers, 6 secondary air ducts, 7 lug bosses, 8 water jackets, 9 water pipes, 10 pyrotechnics pipes, 11 hydroeciums, 12 steam discharges, feed pipe, 13 flues, flashboard, 14 chimneys, 15 smoke pipes sweep up dust door, 16 burner hearths, 17 fire doors, 18 water jacket partition walls, 19 ash doors, 20 air compartments,

destructive distillation chambers

21,22 passages.

Fig. 2 is an A-A cutaway view of the present utility model,

Below in conjunction with accompanying drawing structure of the present utility model is described further:

Boiler of the present utility model comprises chimney 14, pyrotechnics pipe 10, hydroecium 11, water jacket 8,

burner hearth

16,3, air compartments 20 of individual layer fire grate, top fire door 17 sides of individual layer fire grate 3 have the secondary combustion chamber 5 that destructive distillation chamber 21 and side have secondary air duct 6, and destructive distillation chamber 21 communicates with secondary combustion chamber 5 by passage 22.

Destructive distillation chamber 21 and secondary combustion chamber 5 can be surrounded by water jacket 8 and the water jacket partition wall 18 above the individual layer fire grate 3, so that the heat that burning discharges is in time absorbed by the water in the hydroecium 11.

Can lug boss 7 be set on the sidewall above the secondary combustion chamber 5, lug boss 7 can be made by refractory material; Because the effect of lug boss 7 forms the high temperature reflection and make the high-temperature fuel gas burning of being circled round in secondary combustion chamber 5.

The arrival end of secondary air duct 6 can be annular, and the secondary wind energy is fully mixed with fuel gas.

The individual layer fire grate 3 that hand burns the formula boiler can be tilting, and self-propelled individual layer fire grate can be horizontal.

Advantage of the present utility model:

1. smokeless combustion, thermal efficiency height: mainly be that fire coal is able to abundant burning, has realized smokeless combustion, and saves the coal of using of half than similar boiler owing to the effect of destructive distillation chamber and secondary combustion chamber;

2. be applicable to various coals, especially can also be applicable to colm;

3. simple in structure, cost is low, has adopted solid individual layer fire grate, has greatly simplified the manufacturing process of this stove;

4. be convenient to operation: this stove is lower than the fire door of double grate, the custom of suitable people's operation.

Claims

1, normal pressure smokeless combustion multipurpose boiler comprises chimney, the pyrotechnics pipe, and hydroecium, water jacket, burner hearth, individual layer fire grate, an air compartment is characterized in that above the individual layer fire grate: door side has the secondary combustion chamber that destructive distillation chamber, side have secondary air duct; The destructive distillation chamber communicates with secondary combustion chamber by passage.

2, normal pressure smokeless combustion multipurpose boiler according to claim 1 is characterized in that destructive distillation chamber and secondary combustion chamber are surrounded by the water sleeve water jacket partition wall above the individual layer fire grate.

3, normal pressure smokeless combustion multipurpose boiler according to claim 1 and 2 is characterized in that on the top sidewall of combustion chamber lug boss being set.

4, normal pressure smokeless combustion multipurpose boiler according to claim 1 is characterized in that the arrival end of secondary air duct is annular.