CN2101821U

CN2101821U - Horizontal circulating combustion boiler

Info

Publication number: CN2101821U
Application number: CN 91208625
Authority: CN
Inventors: 贾振航; 杨恒瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-05-20
Filing date: 1991-05-20
Publication date: 1992-04-15

Abstract

The utility model relates to a horizontal type circulating combustion boiler furnace which relates to the technical improvement of the existing hand-fired horizontal type boiler furnace. The utility model is characterized in that a middle partition wall is arranged in a furnace cavity; the back wall part of the partition wall is provided with two sliding type louver partition board doors for controlling the trend of smoke gas; in addition, the outlet point of the louver is provided with a burnout chamber and a fly-ash settling chamber which are favorable for further burnout and are used for collecting falling ashes. Since two groups of convection banks are installed at both sides of the furnace cavity, the flow path of the smoke gas is extended. The utility model has the advantages that after the structure is adopted, smoke exhausting amount is reduced, and simultaneously, combustion coal is saved.

Description

Horizontal circulating combustion boiler

The utility model belongs to the coal-burning boiler technical field, is specifically related to a kind of improved hand and burns horizontal burning boiler.

Existing hand burns horizontal boiler, and because of artificial periodically coal periodicity over-emitting black exhaust, reason is that coal combustion is insufficient, and flue gas flow is shorter, and its result not only brings smoke discharge amount big, serious environment pollution, and cause that boiler thermal output is low, coal consumption amount is big.

It is good that the purpose of this utility model provides a kind of smoke medicining dust-removing effect, and burning is complete, and thermal efficiency height has energy-conservation and horizontal circulating combustion boiler environmental benefit.

The technical solution of the utility model is as follows: mainly by drum (13); First convection bank (4); Second convection bank (8); Lower collecting box (3); Base (16); Midfeather (2); Stokehold flue and face arch (1); Back wall (14); Louver type baffle door (7); After-flame and flying dust expansion chamber (15); Flying dust collection bucket (12); Exhaust pass (9) and fire door (10) and (11) are formed, and are primarily characterized in that:

One, with midfeather burner hearth is divided into two parts in horizontal burner hearth, along reaching the below of stokehold flue and face arch (1), two burner hearths communicate and use when rotating the coal circulating combustion partition wall under face arch by back wall (14).Two, on wall behind the burner hearth (14), open two plug-type shutter dividing plate doors (7) with control flue gas trend.Three, secondary furnace and flying dust expansion chamber (15) are set in the shutter exit, also collect ash in order to the further after-flame of fuel.Four, first convection bank (4) and second convection bank (8) are installed in the both sides of burner hearth, make flue gas center on body of heater,, help conducting heat along having grown flue gas flow around 360 °.Five, below the flue of both sides, be equipped with grey collection bucket (12), in order to ash discharge.

Dynamic duty process of the present utility model has mainly adopted the method for recycle combustion, fixed grate.During burning, two parts of burner hearth replace coal by turns, when the left hearth coal, this burner hearth louver type baffle door is closed, right bearth louver type baffle door is opened, and thermal-flame enters right bearth from burner hearth face arch below in the left hearth, and right bearth is in burning mid-term or latter stage, excess oxygen makes in the flue gas that left hearth comes the combustible component totally and not over-emitting black exhaust that at high temperature burns.In like manner, during the right bearth coal, right bearth louver type baffle door is closed and left hearth louver type baffle door is opened, and flue gas is flowed out through left hearth and left hearth baffle door through the face arch below by right bearth, has realized left and right sides circulating combustion.Flue gas flows out the louver type baffle door and burns away in after-flame and flying dust expansion chamber (15).Simultaneously, because this chamber volume becomes big, cigarette speed reduces suddenly, and a large amount of dust settlings are got off.Then high-temperature flue gas enters first convection pass (4), enters second convection pass (8) through face arch top (1), and stream exhanst gas outlet (9) enters chimney.Because flue gas flow is longer, and transversal flow convection bank (4) and (8), and exhaust gas temperature is reduced to below 220 ℃, heat transfer and after-flame are effective.Do in 360 ° of process of flowing around body of heater at flue gas, flying dust can continue sedimentation again in two convection pass, is regularly discharged by flying dust collection bucket (12), thereby reaches the purpose that smoke abatement and dust control improves boiler thermal output.

The utility model has the advantages that: dust exhausting concentration is low, and smoke medicining dust-removing effect is good, thermal efficiency height, fuel savings.The thermal efficiency can reach 70%, and smoke discharge amount is at 200mg/m ³Below, use in suitable class area.This furnace structure compactness, floor space is little, and is simple to operate, promptly can be used for gravity-flow ventilation, can be used for forced ventilation again, and suitable various bands are pressed and horizontal small boiler not with pressure.

Fig. 1 is the main pseudosection of horizontal circulating combustion boiler.

Fig. 2 is along A--A among Fig. 1, the top plan view of B--B.

Fig. 3 is along C--C among Fig. 1, the left pseudosection of D--D.

Fig. 4 is that outside drawing is looked on the left side of Fig. 1.

Wherein:

1--stokehold flue and face arch, the 2--partition wall,

The 3--lower collecting box, 4--first convection bank,

5--left side burner hearth and fixed grate,

6--right side burner hearth and fixed grate,

7--louver type baffle door, 8--second convection bank,

The 9--exhanst gas outlet, the 10--fire door, the 11--fire door,

12--flying dust collection bucket, the 13--drum, wall behind the 14--,

15--secondary furnace and flying dust expansion chamber, the 16--boiler foundation,

17--burner hearth both sides refractory wall.

The concrete structure of the utility model embodiment such as Fig. 1--shown in Figure 4, its structure is by drum (13), first convection bank (4), second convection bank (8), next part case (3), base (16), midfeather (2), stokehold flue and face arch (1), back wall (14), louver type baffle door (7), secondary furnace and flying dust expansion chamber (15), flying dust collection bucket (12), exhanst gas outlet (9) and fire door (11), (10) are formed.By both sides refractory wall in the burner hearth body of heater is divided into middle burner hearth and both sides convection pass.The left side refractory wall extends to the stokehold from the back wall, locates to reserve suitable hole so that flue gas flows into second convection pass by first convection bank through face arch (1) at stokehold flue and face arch (1).The right side refractory wall is also at the stokehold flue and face arch (1) locates to reserve hole so that flue gas enters second convection bank (8), and the right side refractory wall extends to exhanst gas outlet (9) always behind stove, enters chimney so that flue gas is discharged by body of heater.The both sides jug is in order to operation outside stove for plug-type louver type baffle door (7), and all water screen tube and convection bank are all formed with the seamless steel pipe of φ 51 in the stove.This stove can form the series of products of miniature boiler below a ton, can be used for steam boiler and hot-water boiler under the various pressure (comprising normal pressure).

Claims

1, a kind of horizontal circulating combustion boiler, mainly form by drum, convection bank, midfeather, stokehold flue, after-flame and flying dust expansion chamber, shutter shelves door-plate and related accessories, it is characterized in that: a, in horizontal burner hearth, burner hearth is divided into two parts with midfeather, along the below that reaches stokehold flue and face arch (1), two burner hearths communicate partition wall under face arch by back wall (14); B, on wall behind the burner hearth (14), offer two plug-type shutter dividing plate doors (7);

C, secondary furnace and flying dust expansion chamber (15) are set in the shutter exit;

D, first convection bank (4) and second convection bank (8) are installed in the both sides of burner hearth;

E, grey collection bucket (12) is installed below the flue of both sides.