CN2594647Y

CN2594647Y - Improved vertical smokeless coal boilers

Info

Publication number: CN2594647Y
Application number: CN 03201989
Authority: CN
Inventors: 严胡平
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-11
Filing date: 2003-01-11
Publication date: 2003-12-24
Anticipated expiration: 2013-01-11

Abstract

The utility model discloses a vertical smokeless coal-burning boiler. Grate bars are arranged at the bottom of an inner boiler cylinder thereof; a coal throwing port is arranged on an outer boiler cylinder; a fire collecting arch is arranged on upper part of the inner boiler cylinder; a hollow splayed arch is transversally arranged on the inner boiler cylinder wall under the fire collecting arch; both bottom ends of the splayed arch are respectively connected with a smoke blocking wall which is in sealing contact with the inner boiler cylinder wall; the lower ends of the two smoke blocking walls are respectively connected with a hollow fire blocking collecting box; a water pipe grate is transversally arranged on the inner boiler wall under the splayed arch; the water pipe grate, the splayed arch and two fire blocking collecting boxes can respectively communicate relative inner boiler cylinder walls; an inner boiler cylinder cavity between the water pipe fire grate and the splayed arch forms a dry distillation chamber; the top ends of the splayed arch and a secondary air pipe form the sealing connection; air holes are uniformly distributed on the pipe wall of the secondary air pipe which can supply air through a blower, which faces the dry distillation chamber; the coal throwing port is communicated with the dry distillation chamber. The utility model can reduce the discharge of smoke; the layout of the heating surfaces is reasonable; the heat energy utilization rate is high; the loss of heat energy is less.

Description

Improved vertical fire coal less boiler

Technical field

The utility model belongs to the improvement of vertical fire coal boiler structure, particularly improved vertical fire coal less boiler.

Background technology

At present the various vertical fire coal boiler ubiquities that use make because of structural design is unreasonable or big, the problem such as coal burning is insufficient of smoke discharge amount.Existing vertical fire coal boiler is directly rendered to coal in use on the fire bars of bottom, body of heater inner combustion chamber and is burnt, severe depletion of oxygen in the combustion chamber of coal top when causing coal burning, a large amount of black wood charcoal grains below 5 microns can not completing combustion, but, atmosphere is caused serious smoke contamination along with flue gas is discharged.Prior art rests on handles, replenishes combustion adjuvant or fuel is carried out deep processing in the coal burning process boiler exhaust gas, does the operating cost that has increased boiler greatly like this.In addition, the heating surface layout in traditional vertical fire coal boiler is unreasonable, and the flow of flue gas speed that contains a large amount of heat energy that coal burning produces is too fast, and heat-energy losses is big, and the thermal efficiency is low.

Summary of the invention

The purpose of this utility model is to provide a kind of improved vertical fire coal less boiler, and it is rational in infrastructure, and coal burning is fully thorough, and can greatly reduce the discharging of flue dust, improves the heat energy utilization rate, reduces heat-energy losses.

The purpose of this utility model is achieved in that the smokeless whirlpool of a kind of improved vertical fire coal stove, comprise by interior, the body of heater that outer furnace tube constitutes, the bottom of interior stove tube is provided with fire bars, outer furnace tube is provided with coal feeding hole, interior stove tube top is provided with inside stove tube poly-fire projecting inward and positioned opposite and encircles, the inner furnace tube wall of poly-fire arch below is provided with the hollow splayed arch of lateral arrangement, two bottoms of splayed arch are connecting the retaining cigarette wall that contacts with the inner furnace tube wall sealing respectively, the lower end of two retaining cigarette walls is connecting the firestopping container of hollow respectively, be horizontally arranged with water pipe furnace grate on the inner furnace tube wall of splayed arch below, water pipe furnace grate, splayed arch and two firestopping containers are communicated with relative inner furnace tube wall respectively, form the destructive distillation chamber in the interior stove tube chamber between water pipe furnace grate and the splayed arch, form gasification combustion chamber in the interior stove tube chamber of water pipe furnace grate below, the top of splayed arch and secondary air channel formation are tightly connected, by the uniform eye of wind that is provided with on the tube wall of destructive distillation chamber of the secondary air channel of air blast air-supply, coal feeding hole is connected with the destructive distillation chamber.

The utility model in use, coal is put on the water pipe furnace grate from coal feeding hole, in entering from the bottom of secondary air channel and body of heater respectively, air helps coal burning in the stove tube, disclose the coal after heating up in a steamer on the fire bars of falling the setting of body of heater bottom from water pipe furnace grate, further burning, gas fume after burning is turned back upwards from the fireworks channel that forms between firestopping container and the inner furnace tube wall, is stopped for poly-fire encircles again, convergence, depositing dust, discharges at last.The splayed arch of hollow and firestopping container can absorb the huge heat energy that is contained in the flue gas of coal burning generation effectively, the glide path complications of flue gas, also make the heat energy in the flue gas fully to be absorbed, thereby improve the heat energy utilization rate greatly, reduce heat-energy losses by each heat-absorbent surface.The improved structure of the utility model can provide sufficient air for the coal burning in the combustion chamber, the coal present position is surrounded by the air of abundance, make coal be able to abundant burning, thereby eliminate because anoxic and the abundant black wood charcoal grain of after-flame, reach the discharging purpose of minimizing flue dust.Its reasonable in design, simple, low cost of manufacture, dust removing effects is remarkable, is easy to promote.

Description of drawings

Fig. 1 looks cross-sectional view for master of the present utility model, and Fig. 2 is a side-looking cross-sectional view of the present utility model.

The specific embodiment

As Fig. 1, shown in Figure 2, a kind of improved vertical fire coal less boiler comprises the body of heater that is made of interior stove tube 3 and outer furnace tube 1, is provided with the recirculated water medium between the interior outer furnace tube.The bottom of interior stove tube 3 is provided with fire bars 9, and the top of interior stove tube 3 is provided with inside stove tube 3 poly-fire projecting inward and positioned opposite and encircles 2, and poly-fire arch 2 is arc or oval shape, in order to the flow velocity of reducing smoke.The inner furnace tube wall of poly-fire arch 2 belows is provided with the hollow splayed arch 15 of lateral arrangement, and two bottoms of splayed arch 15 are connecting the firestopping container 7 that lower end that the retaining cigarette wall 5, two that contact with the inner furnace tube wall sealing keeps off cigarette walls 5 is connecting hollow respectively respectively.

As shown in Figure 1, vertically two firestopping containers 7 that are provided with are symmetric arrangement, splayed arch 15 is communicated with relative inner furnace tube wall respectively with two firestopping containers 7, be horizontally arranged with water pipe furnace grate 6 on the inner furnace tube wall of splayed arch 15 belows, water pipe furnace grate 6 is communicated with relative inner furnace tube wall, form destructive distillation chamber 23 in the interior stove tube chamber between water pipe furnace grate 6 and the splayed arch 15, form gasification combustion chamber 24 in the interior stove tube chamber of water pipe furnace grate 6 belows, the inner furnace tube wall of gasification combustion chamber 24 is provided with the natural wind blast pipe 16 that is connected with outer furnace tube 1, can be to replenish combustion air in the gasification combustion chamber 24 where necessary by blast pipe 16.The top of splayed arch 15 and secondary air channel 14 formations are tightly connected, the uniform eye of wind that is provided with on the tube wall of destructive distillation chamber 23 of the secondary air channel 14 that the one end links to each other with air blast 18, secondary air channel 14 on the tube wall of destructive distillation chamber 23, can also be provided with airduct 26 so that wind direction is more concentrated.The coal feeding hole 21 that is provided with on the outer furnace tube 1 is connected with destructive distillation chamber 23.The bottom of body of heater is respectively arranged with air compartment 12 and secondary air chamber 10, the inwall of air compartment 12 close fire bars 9 is provided with the airduct of arranging in the shape of a spiral 11, one end of secondary air channel 14 is connected with secondary air chamber 10, two discharge pipes 17 that link to each other with

air blast

18,19 are connected with two air compartments of bottom of furnace body setting respectively, wherein a discharge pipe 17 is connected with secondary air chamber 10, and another root discharge pipe 19 is connected with an air compartment 12.

As shown in Figure 2, on external furnace body 1, be respectively arranged with cleaning door 20, coal feeding hole 21 and slag notch 22 from top to bottom.Cleaning door 20 is corresponding with poly-fire arch 2 present positions and be connected with interior stove tube 3, and slag notch 22 is connected with gasification combustion chamber 22.

As Fig. 1, shown in Figure 2, seal respectively between 15 liang of bottoms of two firestopping containers, 7 tops and splayed arch and be provided with retaining cigarette wall 5, be embedded with the retaining smoke pipe 4 of horizontally set in the retaining cigarette wall 5, retaining cigarette wall 5 two ends contact with the inner furnace tube wall sealing respectively, and the two ends of retaining smoke pipe 4 are communicated with relative inner furnace tube wall respectively.Be positioned at the uniform radiant walls 8 that is provided with on the inner furnace tube wall of firestopping container 7 belows, the flue-gas temperature that radiant walls 8 can keep coal burning to produce guarantees that the coal that drops on the fire bars 9 can also effectively fully burn.

Claims

1. improved vertical fire coal less boiler, comprise by interior, outer furnace tube (3,1) body of heater of Gou Chenging, the bottom of interior stove tube (3) is provided with fire bars (9), outer furnace tube (1) is provided with coal feeding hole (21), it is characterized in that: interior stove tube (3) top is provided with inside stove tube poly-fire projecting inward and positioned opposite and encircles (2), the inner furnace tube wall of poly-fire arch (2) below is provided with the hollow splayed arch (15) of lateral arrangement, two bottoms of splayed arch (15) are connecting the retaining cigarette wall (5) that contacts with the inner furnace tube wall sealing respectively, the lower end of two retaining cigarette walls (5) is connecting the firestopping container (7) of hollow respectively, be horizontally arranged with water pipe furnace grate (6) on the inner furnace tube wall of splayed arch (15) below, water pipe furnace grate (6), splayed arch (15) and two firestopping containers (7) are communicated with relative inner furnace tube wall respectively, form destructive distillation chamber (23) in the interior stove tube chamber between water pipe furnace grate (6) and the splayed arch (15), form gasification combustion chamber (24) in the interior stove tube chamber of water pipe furnace grate (6) below, the top of splayed arch (15) and secondary air channel (14) formation are tightly connected, by the uniform eye of wind that is provided with on the tube wall of destructive distillation chamber (23) of the secondary air channel (14) of air blast (18) air-supply, coal feeding hole (21) is connected with destructive distillation chamber (23).

2. improved vertical fire coal less boiler according to claim 1 is characterized in that: said poly-fire arch (2) is arc or oval shape.

3. improved vertical fire coal less boiler according to claim 1 is characterized in that: the uniform radiant walls (8) that is provided with of inner furnace tube wall that is positioned at firestopping container (7) below.

4. improved vertical fire coal less boiler according to claim 1 is characterized in that: the inner furnace tube wall of gasification combustion chamber (24) is provided with the natural wind blast pipe (16) that is connected with outer furnace tube (1).

5. improved vertical fire coal less boiler according to claim 1, it is characterized in that: the bottom of body of heater is respectively arranged with a separate air compartment (12) and secondary air chamber (10), an air compartment (12) is provided with airduct (11) near the inwall of fire bars (9), one end of secondary air channel (14) is connected with secondary air chamber (10), two discharge pipes (17 that link to each other with air blast (18), 19) be connected with two air compartments of bottom of furnace body setting respectively, wherein a discharge pipe (17) is connected with secondary air chamber (10), and another root discharge pipe (19) is connected with an air compartment (12).

6. improved vertical fire coal less boiler according to claim 1 is characterized in that: be embedded with the retaining smoke pipe (4) of horizontally set in the retaining cigarette wall (5), the two ends of retaining smoke pipe (4) are communicated with relative inner furnace tube wall respectively.