CN2660320Y

CN2660320Y - Verticle boiler to burn coal in clean way

Info

Publication number: CN2660320Y
Application number: CN 03237649
Authority: CN
Inventors: 佘顺元
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-30
Filing date: 2003-09-30
Publication date: 2004-12-01
Anticipated expiration: 2013-09-30

Abstract

The utility model relates to a vertical coal-cleaning burning boiler, which is characterized in that an upper, middle and lower compound boiler hump consists of orderly arranged transverse water pipes and flue baffles which seal among the transverse water pipes , which has the functions of smoke-eliminating and dust-removing to form a multi-return flue. A boiler grate is arranged as a moving grate, under which a horizontal secondary air-distributing pipe is arranged, which makes a simpler and more reasonable structure of the boiler, more convenient manufacturing and low cost. In addition, an efficient smoke-eliminating and dust-removing machine of the boiler comprises combined boiler arches and a secondary air-distributing and strong burning technology, which achieves the internal smoke-eliminating and dust-removing of the manual boiler and makes the fly ash separate and burn off within the boiler. The better smoke-eliminating and bust-removing effect and high thermal efficiency promote the extension and the utilization of the utility model.

Description

Coal clean combustion vertical boiler

Technical field

The utility model relates to the civil boiler technical field, specifically relates to a kind of coal clean combustion vertical boiler.

Background technology

Chinese patent " novel vertical air distribution burning the normal-pressure hot-water boiler " (patent No.: 02283895.3) provide a kind of combined furnace arch that on furnace binding, adopts, and set up the buffler that can prolong the flue flow process, but the water screen tube that enhanced rad is conducted heat is set in burner hearth high-temperature flue gas exit simultaneously, on combustion technology, adopt the new technology of the two blowing systems of single blower fan of energy overheavy firing process, have and to make coal completing combustion to greatest extent, reduce blackness of exhaustion, obviously improve the thermal efficiency of boiler, save advantages such as coal, but, in actual manufacture process, this boiler but exposes following defective and deficiency:

1) combined furnace arch in this technology, be that the upper, middle and lower chimney arch is abnormal curved surface intercalated water sleeve chimney arch, the requirement dimensional discrepancy is little, the accuracy of manufacture is high, accurate positioning, therefore make complicated, the production cost height, and upper, middle and lower abnormal curved surface intercalated water sleeve chimney arch will be separately fixed on the cylindrical inner bag shell, exists the assembly difficulty of chimney arch and cylindrical surface inner bag shell, the weld seam interface is many and occur problems such as mass defect, the security weakening of inner bag shell easily;

2) combinations thereof chimney arch especially descends furnace arch structure to be short of to some extent, smoke abatement and dust control function imperfection;

3) this technology adopts fixed grate, and the deashing that pokes fire is very inconvenient, and in the deashing process that pokes fire, cold wind enters burner hearth, reduces temperature in the burner hearth, influences normal combustion;

4) the horizontal airduct of secondary ring-type in this technology is installed in the burner hearth, not only takies furnace cavity, and is burnt out easily in the burner hearth hot environment, shortens its service life.

Summary of the invention

The purpose of this utility model is to overcome the defective of above-mentioned prior art, provide a kind of structure simple and direct rationally, easy to manufacture, with low cost, can guarantee workmanship, make coal completing combustion, can realize smoke abatement and dust control function in the handwarmer stove, flue gas cleaning discharging, the coal clean combustion vertical boiler of the deashing of being convenient to poke fire.

The purpose of this utility model is achieved through the following technical solutions:

A kind of coal clean combustion vertical boiler, comprise body of heater, horizontal water tube, combined furnace arch and fire grate, it is characterized in that: described fire grate below is equipped with the horizontal airduct of secondary ring-type and the horizontal airduct of ring-type successively, the horizontal airduct of described secondary ring-type is communicated with the vertical tube of arranging along inboard wall of burner hearth, has the air distribution nozzle on the vertical tube; Described combined furnace arch by chimney arch on the splayed, fall L shaped under chimney arch and the spill chimney arch form, above-mentioned upper, middle and lower chimney arch all is to be formed by connecting by the dividing plate that horizontal water tube is arranged between back and shutoff horizontal water tube by certain way, and the dislocation be arranged in the body of heater courage shell, constitute many backhauls flue; Described chimney arch inwall down is pasted with refractory concrete layer and wire netting overlapping layers successively;

Described fire grate links to each other by the handle of connecting rod with the body of heater outside;

Described inboard wall of burner hearth is pasted with the refractory concrete layer.

Technical characterstic of the present utility model is:

1. the utility model is directly arranged by certain mode with horizontal water tube, and by the buffler between the shutoff horizontal water tube form chimney arch on the splayed respectively, fall L shaped in chimney arch under chimney arch and the spill, the boiler structure of Zhi Zuoing is very simple like this, and is easy to make, with low cost;

2. the utility model is pasted refractory concrete or spraying high-temperature resistant coating on cylindrical shape burner hearth inwall, paste refractory concrete at the following chimney arch internal layer of upper furnace simultaneously, hang and paste the wire netting overlapping layers, thereby hot environment in the maintenance burner hearth, when rising to down, the burner hearth high-temperature flue gas is blocked when chimney arch is hung the wire netting overlapping layers that pastes, and mobile along lower wall surface, the exhanst gas outlet from the burner hearth both sides flows out burner hearth then; Meanwhile, the ickings of carrying secretly in the flue gas, dust, coke fines are held back, are burnt by high-temperature metal net overlapping layers or fall after rise again to burner hearth and burn away after the collision with it, thereby most of flying dust separates in burner hearth and burns, and can remove the dust stratification in the metal net shaped overlapping layers in normal operating process; The high-temperature flue gas that flows out from the exhanst gas outlet of burner hearth both sides, after many backhauls flue that combined furnace arch constitutes flows, because flue gas constantly changes flow velocity and direction, flying dust separates with flue gas under the effect of inertia force and gravity, falling is piled up at the upper surface of chimney arch, regularly remove, finally realized the interior smoke abatement and dust control of stove of handwarmer, and saved fuel by shoot door, reduced smoke contamination, prolonged flue gas flow, exhaust gas temperature is reduced greatly, smoke evacuation contains concentration less than 100mg/Nm ³

3. the utility model adopts hand moving grate, when poking fire deashing, with pulling moving fire grate handle, fire grate is gently moving, and the ash on the fire grate is fallen in the airtight grey thorax, so both can reduce fireman's labour intensity, can make again and not advance cold wind in the burner hearth, thereby guarantee normal combustion in the burner hearth;

4. the utility model is located at the horizontal airduct of the ring-type of secondary air distribution the below of fire grate, the horizontal airduct cross section of ring-type is suitably strengthened, promptly become a plenum chamber, help the secondary air distribution, and secondary air distribution vertical tube is communicated with horizontal airduct along hearth wall, thereby it is simple that secondary air distribution system is made, and air distribution is effective, and increase service life.

The utility model utilizes combinations thereof chimney arch and the strong combustion technology of air distribution to constitute efficiently smoke deduster in the stove, realized the interior smoke abatement and dust control of stove of handwarmer, making flying dust is separable burning in stove, thermal efficiency height, smoke medicining dust-removing effect is good, flue gas cleaning discharging, realized to greatest extent handwarmer energy-saving and environmental protection, be convenient to this three general objective of operational management.

Description of drawings

Fig. 1 is the structural representation of the utility model coal clean combustion vertical boiler.

The specific embodiment

Coal clean combustion vertical boiler of the present utility model comprises body of heater 1, and described body of heater 1 bottom is equipped with fire grate 3, and fire grate 3 links to each other with the handle 4 of body of heater 1 outside by connecting rod 16, becomes moving grate 3, and moving grate 3 is divided into burner hearth 15 and furnace base with body of heater 1 bottom; The horizontal airduct 6 of secondary ring-type and the horizontal airduct 5 of ring-type are located in the furnace base of moving grate 3 belows successively, and link to each other with body of heater 1 blower fan 19 outward, and a plurality of valves 7 are installed in respectively on the different airducts, are used for controlling the air quantity adjusting of combustion process; The horizontal airduct 6 of described secondary ring-type is and communicates along some arrangements of burner hearth 15 annular inner wall settings vertical tube 8 orderly, differing heights, and formation secondary blowing system, and vertical tube 8 is provided with the air distribution nozzle; Some horizontal water tubes 2 by certain way be arranged in burner hearth 15 tops and with form chimney arch 9 on the splayed respectively after the dividing plate 12 of 2 of shutoff horizontal water tubes is connected, fall L shaped in chimney arch 11 under chimney arch 10 and the spill, above-mentioned upward chimney arch 9, middle chimney arch 10 and 11 dislocation of following chimney arch are arranged in the body of heater 1 courage shell, constitute many backhauls flue; The below of following chimney arch 11 hangs the netted overlapping layers 13 of metal clad, has the flue dust of holding back, strengthens the burner hearth combustion process, and the combustible in the burner hearth is fully burnt, reach the effect of smoke abatement and dust control, water screen tube 17 is installed on body of heater 1 inwall, is used for radiant heat transfer, improves heat exchange effect.In order to remain the hot environment in the burner hearth, make in the burner hearth combustible fully, burning completely, the utility model is stickup refractory concrete layer 14 on the internal layer of burner hearth 15 inwalls and following chimney arch 11 also; Have shoot door 18 on the body of heater 1 on last chimney arch 9, following chimney arch 11 tops, regularly remove horizontal water tube 2 and the dust stratification above the chimney arch of upper, middle and lower.

Claims

1. coal clean combustion vertical boiler, comprise body of heater (1), horizontal water tube (2), combined furnace arch and fire grate (3), it is characterized in that: described fire grate (3) below is equipped with a horizontal airduct of secondary ring-type (6) and a horizontal airduct of ring-type (5) successively, the horizontal airduct of described secondary ring-type (6) is communicated with the vertical tube of arranging along burner hearth (7) inwall (8), and vertical tube has the air distribution nozzle on (8); Described combined furnace arch by chimney arch on the splayed (9), fall L shaped under chimney arch (10) and the spill chimney arch (11) form, above-mentioned upper, middle and lower chimney arch all is to be formed by connecting by the dividing plate (12) that horizontal water tube (2) is arranged between back and shutoff horizontal water tube (2) by certain way, and the dislocation be arranged in body of heater (1) the courage shell, constitute many backhauls flue; Described chimney arch (11) inwall down is pasted with refractory concrete layer (14) and wire netting overlapping layers (13) successively.

2. by the described coal clean combustion of claim 1 vertical boiler, it is characterized in that: described fire grate (3) links to each other by the outside handle (4) of connecting rod (16) and body of heater (1).

3. by the described coal clean combustion of claim 1 vertical boiler, it is characterized in that: described inboard wall of burner hearth is pasted with refractory concrete layer (14).