CN2784752Y

CN2784752Y - Environment-friendly vertical coal-gasified and coal-fired boiler

Info

Publication number: CN2784752Y
Application number: CN 200520019074
Authority: CN
Inventors: 胡玉成; 胡晓莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-19
Filing date: 2005-05-19
Publication date: 2006-05-31
Anticipated expiration: 2015-05-19

Abstract

The utility model relates to an environment-friendly vertical coal-gasified and coal-fired boiler. The utility model is characterized in that a once air pipe, a quadric air pipe, a cubic air pipe and a quartic air pipe and a radiation boiler arch, a herringbone deflection baffle and a reverse splay deflection baffle are combined into integration, wherein the once air pipe is communicated with a once air box, and the inside periphery of the once air box is provided with the once air pipe. The lower part of the periphery of the inside wall of the boiler chamber is provided with the quadric air pipe and a gasification vent hole that is matched with the quadric air pipe, and the middle part of the boiler chamber is provided with the cubic air pipe and a tangent rotation blast nozzle that is matched with the cubic air pipe. The upper side of the radiation boiler arch is provided with the quartic air pipe and a quartic vent hole that is matched with the quartic air pipe. The quadric air pipe, the cubic air pipe and the quartic air pipe are all communicated with the quadric air box. The utility model makes solid combustion between coal seams converted into gas space combustion in the boiler chamber, and carries out sectional air supply and staging combustion to make coal-gasified combustion complete and combust cleanly to obtain smoke prevention and dust control in the boiler. The utility model has the following advantages of high thermal efficiency, good smoke prevention and dust control effect and colorless exhausting smoke, and is an ideal environment-friendly boiler.

Description

The vertical coal gasification combustion boiler of environment-friendly type

One, technical field

The utility model belongs to the special equipment technical field, and a kind of specifically is the vertical coal gasification combustion boiler of environment-friendly type of fuel with the coal.

Two, background technology

It is domestic that what now moved is the vertical boiler of fuel with the coal, because its chamber structure, determined the incomplete of coal combustion, promptly lack necessary burning condition, do not join secondary wind mostly, and adopt natural ventilation system, flue gas flow rate is low, coal seam on the fire grate and air loose contact, the burning reflection is slow, and the coal grain is difficult to grill thoroughly in burner hearth.And its structure is a horizontal water tube, does not establish chimney arch, and by flue and tube bank heat exchange, flue gas flow is short, causes the exhaust gas temperature height, and heat loss is big, and the thermal efficiency is low, serious over-emitting black exhaust, and dust exhausting concentration is up to 400mg/Nm ³, blackness of exhaustion woods lattice Manda is to the 2-3 level.Though the indivedual vertical boilers that have have adopted the fire grate bottom to send wind one time, burner hearth send secondary wind, how based on a wind, fails to carry out reasonable wind distribution according to the characteristic condition of coal combustion, fails to reach the effect of completing combustion.Though dust exhausting concentration, blackness of exhaustion descend to some extent, do not reach the new century environmental requirement yet.

Three, summary of the invention

The purpose of this utility model is the vertical coal gasification combustion boiler of a kind of environment-friendly type that proposes at above-mentioned the deficiencies in the prior art part.This boiler is converted into gas compartment burning in the burner hearth with the interlayer solid combustion of coal on grate, by multistage, layering air-supply, realizes overheavy firing, reaches smoke abatement and dust control in the stove, realizes that smoke evacuation is colourless.With radiation chimney arch, the combination of two S shape flue, improve fire box temperature again, strengthen the heat transfer of convective region, improve boiler thermal output, the vertical coal gasification combustion boiler that provide the smoke abatement and dust control of environment-friendly type good, the thermal efficiency is high.

The utility model is combined into one an airduct of coal gasification combustion, secondary air channel, tertiary-air pipe, four airducts, radiation chimney arch and herringbones and herringbone baffle plate.

Its structure is:

(1), an airduct communicates with bellows, on the inside circumference of bellows, establishes the tilt airduct at 20 ° of-30 ° of angles of 4-6 root;

(2), secondary air channel, tertiary-air pipe, four airducts all communicate with secondary air box, establish several secondary air channels and gasification wind with matching hole in the inwall circumference bottom of flue, several tertiary-air pipe and tangential rotation tertiary air mouth with matching are established in the middle part, and the upside of radiation chimney arch is established 2 four airducts and four wind holes with matching.

Herringbone and herringbone baffle plate are located at both sides, the centre of horizontal water tube, and the angle of inclination is road, 45 ° of-60 ° of two roads to four.

Outstanding feature of the present utility model:

1, the burner hearth overall structure is that traditional gas generator and grate furnace are organically combined, and coal gasification-burning-radiation-heat transfer process is finished in burner hearth.

2, according to coal combustion character, realize air zoning, distribution according to need realizes that coal is at the burning of burner hearth internal classification, after-flame.Make the flame temperature in the burner hearth be balanced trend, eliminate producing localized hyperthermia's anoxia condition in the combustion process, making the coal seam upper space is that the interior fuel gas of burner hearth fully burns, after-flame.

3, hoop is arranged the stove inner air-distributing system that is made up of many multistage airducts, a plurality of wind hole and tangential tuyere in stove, the furnace high-temperature flue gas forms in burner hearth and necessarily cuts angle, produce the high speed swirling eddy, one side makes air fully be mixed with combustible and contacts, flying dust is separated with flue gas and the sedimentation burner hearth in, realize burner hearth internal combustion and dedusting.

4, burner hearth outlet flue place is provided with the radiation chimney arch, has both strengthened the radiant heat transfer in the stove, has increased flue gas holdup time in burner hearth again, has prolonged flue gas in the burner hearth internal combustion time.Simultaneously separating of interior flying dust of stove and flue gas, combustion efficiency is strengthened.

5, high-temperature flue gas is under the inducing of herringbone and herringbone baffle plate, and circuitous upwards transversal flow water pipe has prolonged high-temperature flue gas holdup time in stove in the convection current area under control, has increased heat-transfer effect, reduces exhaust gas temperature.

The utility model has the advantages that:

(1), fume and dust is thorough, blackness of exhaustion, smoke dust discharge concentration are low, meet national I class area environmental requirement, need not the outer cleaner of stove.

(2), fuel gasification classification overheavy firing and chimney arch, two S shape flue make up efficiency of combustion and thermal efficiency height, fuel saving greatly.

(3), fuel tolerance strong (II, III class bituminous coal, anthracite), cheaply easily purchase, energy charge only is the 1/7-1/8 of similar fuel vapor boiler.

(4) but, direct scatter fire of raw coal, need not special processing and handle, the saving of work and time expense is low.

(5), boiler attendance is simple, installs easy to adjust.

Four, description of drawings

Accompanying drawing (1) is a structural representation of the present utility model;

Accompanying drawing (2) is the structural representation of an air distribution device of the utility model.

Wherein: (1) air blast, (2) bellows, (3) louver, (4) secondary air box, (5) fire grate, (6) secondary air channel, (7) gasification wind hole, (8) radiation chimney arch, (9) herringbone and herringbone baffle plate, (10) horizontal water tube, (11) flue, (12) shell, (13) furnace gall head, (14) impact tube, (15) safety valve, (16) Pressure gauge, (17) water level meter, (18) four wind holes, (19) four airducts, (20) tertiary air mouth, (21) tertiary-air pipe, (22) airducts.

Five, the specific embodiment

With reference to the accompanying drawings 1, shown in Figure 2, enforcement of the present utility model is described further:

Structure of the present utility model is that air blast (1) is connected with bellows (2), secondary air box (4) respectively by louver (3), flue (11) inwall is provided with secondary air channel (6), tertiary-air pipe (21), four airducts (19) respectively, all communicates in secondary air box (4).Gasification wind with matching hole (7), tertiary air mouth (20), four wind holes (18) are all arranged on secondary air channel (6), tertiary-air pipe (21), four airducts (19).Establish radiation chimney arch (8) in burner hearth, lower furnace portion is established fire grate (5).The district is provided with herringbone and herringbone baffle plate (9) respectively at horizontal water tube (10), and baffle plate (9) is connected with flue (11).Establish an airduct (22) in fire grate (5) bottom, an airduct (22) communicates with bellows (2).

The utility model improves boiler thermal output and smoke abatement and dust control for reaching, realize that smoke evacuation is colourless, the wind of giving in the stove by air blast (1) passes through louver (3), according to a wind, secondary wind, tertiary air, the ratio of four wind needs is sent into bellows (2) and secondary air box (4) respectively, No. one time the interior wind of bellows evenly concentrates supply fire grate (5) bottom combustion-supporting by an airduct (22), wind in the secondary air box is by secondary air channel (6), tertiary-air pipe (21), four airducts (19) and gasification wind with matching hole (7), four wind holes (18), tertiary air mouth (20) hierarchical classification is tangentially injected burner hearth, realize gasification, and combustion in the burner hearth, rotary combustion and after-flame arrive smoke abatement and dust control in the stove.The high-temperature flue gas that produces after the burner hearth internal combustion enters horizontal water tube (10) district after the stopping of radiation chimney arch (8), form two S shape flues by herringbone and herringbone baffle plate (9), and the flue gas after the heat transfer enters chimney by impact tube (14) and discharges.

In sum, realize the overall process of coal gasification-burning-radiation-heat transfer in stove, reach the raising boiler thermal output, smoke abatement and dust control in the stove realizes that smoke evacuation is colourless.

Claims

1, the vertical coal gasification combustion boiler of a kind of environment-friendly type, form by shell, flue, furnace gall head, horizontal water tube, impact tube, safety valve, Pressure gauge and water level meter, it is characterized in that: an airduct (22), secondary air channel (6), tertiary-air pipe (21), four airducts (19), the radiation chimney arch (8) of coal gasification combustion are combined into one with herringbone and herringbone baffle plate (9), and its structure is:

(1), an airduct (22) communicates with bellows (2), on the inside circumference of bellows (2), establishes the tilt airduct (22) at 20 ° of-30 ° of angles of 4-6 root;

(2), secondary air channel (6), tertiary-air pipe (21), four airducts (19) all communicate with secondary air box (4), establish several secondary air channels (6) and gasification wind with matching hole (7) in the inwall circumference bottom of flue (11), several tertiary-air pipe (21) and tangential rotation tertiary air mouth with matching (20) are established in the middle part, and the upside of radiation chimney arch (8) is established 2 four airducts (19) and four wind holes with matching (18).

2, the vertical coal gasification combustion boiler of a kind of environment-friendly type according to claim 1 is characterized in that: herringbone and herringbone baffle plate (9) are located at centre, the both sides of horizontal water tube (10), and the angle of inclination is road, 45 ° of-60 ° of two roads to four.