CN2373743Y - Anthracite boiler using compound circulating and with chain fire grate - Google Patents
Anthracite boiler using compound circulating and with chain fire grate Download PDFInfo
- Publication number
- CN2373743Y CN2373743Y CN 99203392 CN99203392U CN2373743Y CN 2373743 Y CN2373743 Y CN 2373743Y CN 99203392 CN99203392 CN 99203392 CN 99203392 U CN99203392 U CN 99203392U CN 2373743 Y CN2373743 Y CN 2373743Y
- Authority
- CN
- China
- Prior art keywords
- air
- boiler
- smoke
- box
- drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a compound circulating chain anthracite boiler, which comprises a base, a chain grate, an air distributing device, a hearth, a smoke chamber, a boiler cylinder, an air preheater and a water circulating system. The utility model adopts the technical measures of a compound circulating mode of a forced circulation body and a natural circulation part, an S-shaped smoke gas passage which can form a smoke gas flow hearth in an alpha shape, the air distributing device which is composed of multiple groups of closed type air chambers, etc. The utility model has the advantages of reasonable structural design, sufficient combustion, stable running, high thermal efficiency reaching 84.62 per cent, large output reaching 148 per cent, good thermal insulation of the boiler body, low surface temperature, less heat dissipation, and low dust removing concentration.
Description
The utility model relates to coal-burning boiler, particularly a kind of combined-circulation chain anthracite-fired boiler.
At present, chain-grate boiler is general all to burn bituminous coal.Anthracite-fired boiler is many from the bituminous coal fired boiler transformation, because anthracite ignition point is high and burning time is long, the structural change of boiler is little, combustion system exists ignition zone and primary zone temperature lower, can not guarantee normally to ignite and conflagration, fire grate length can not guarantee inadequately to burn with afterheat of slags and discharge.Exhaust gases passes mostly is direct current, series-mode frame greatly, and the high-temperature flue gas flow process is shorter, and heat transfer type is that transverse pipe is washed away outward, and heat transfer coefficient is little.
Boiler cloth wind system is the setting of uiform section non-tight formula, be difficult for to adjust, and string wind, to run wind serious, the contradiction of the excessive and local lack of air of local air usually occurs.
Boiler body adopts forced circulation or natural circulation mode, the former is difficult for guaranteeing that each closed circuit flow velocity satisfies the regulation requirement, the latter is prone to circulatory troubles such as bias current, crossfire, and boiler circulation security and stability and complex heat transfer effect are descended, and influences boiler output.In a word, the above-mentioned deficiency of existing anthracite-fired boiler causes fired coal combustion insufficient, and boiler thermal output is on the low side, undercapacity.
The purpose of this utility model is to overcome above-mentioned deficiency, and providing a kind of is the combined-circulation chain anthracite-fired boiler of fuel with the anthracite, with the thermal efficiency that improves boiler with go out power rate, reduces the dust exhausting concentration of boiler, reduces environmental pollution.
Combined-circulation chain anthracite-fired boiler of the present utility model comprises: smoke-box, drum (20), air preheater (26) and the water circulation system of base, traveling-grate stoker (7), air-distribution device, burner hearth (9), burner hearth top is characterized in that:
Described air-distribution device contains some groups of closed air compartments (3), and two air compartments of every configuration set (3) are set up in parallel in the middle of traveling-grate stoker (7);
Some pyrotechnics pipes (19) are set in the described drum (20):
Smoke-box (10) and last smoke-box (17) during described smoke-box divides, middle smoke-box (10), the some pyrotechnics pipes of going up in smoke-box (17) and the described drum (20) (19) constitute the serpentine exhaust gases passes;
Described water circulation system main body is the forced circulation part, and the part is the Natural Circulation part, and Natural Circulation partly is arranged at the rear portion of body of heater.
Description of drawings of the present utility model is as follows:
Fig. 1 is the overall structure front view of boiler;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the air compartment structural representation of its air-distribution device;
Fig. 4 is the side view of the air compartment structure of its air-distribution device;
Fig. 5 is its water circulation system structural representation.
Further describe below in conjunction with accompanying drawing.Each parts shown in Fig. 1～5 are respectively: coal bunker (1), coal gate (2), air compartment (3), air inlet (4), be communicated with air channel (5), fire grate supports (6), fire grate (7), rear arch (8), burner hearth (9), middle smoke-box (10), preceding collection case (11), preceding arch tube (12), face arch (13), aditus laryngis (14), upper collecting chamber (15), preceding upper collecting chamber (16), last smoke-box (17), preceding upper collecting chamber tedge (18), pyrotechnics pipe (19), drum (20), boiler discharging tube (21), tube connector (22), excessive header (23), gather collection case (24), tedge (25), down-comer (25 '), air preheater (26), rear set box water inlet pipe (27), rear arched tube (28), rear set box (29), left side lower condensate sump (30), right side lower condensate sump (31), water screen tube (32), water inlet pipe (33), convection tube (bundle) (34), main air case (35), transfer wind pull bar (36), air regulating board (37), draw grey bar (38), dust block board (39), ash port (40), hawk positioning track (41), air regulating board location (42), air compartment baffle (43), exhanst gas outlet (44), orifice plate (45), isolate water tank (46).
As shown in Figure 1, 2, the space that is surrounded by face arch (13), rear arch (8), fire grate (7), left and right sides water screen tube (32) and outer furnace wall is burner hearth (9).The space that is surrounded by rear arch (8), preceding arch tube (12), rear arched tube (28), the partition wall that gathers collection case (24) top and both walls is middle smoke-box (10).The space that is surrounded by described partition wall, drum (20) and last outer furnace wall is last cigarette (17).Some pyrotechnics pipes (19) are set in the drum (20), and the pyrotechnics pipe is to wash away passage in vertical pipe of flue gas.80～140 pyrotechnics pipes (19) are set in the drum in the embodiment (20), 109 pyrotechnics pipes can be set as the boiler of 4.2MW.Described middle smoke-box (10), the some pyrotechnics pipes of going up in smoke-box (17) and the drum (20) (19) constitute the serpentine exhaust gases passes; High-temperature flue gas is after smoke-box flows to stove in aditus laryngis enters, exhaust gases passes above rear arched tube imports and goes up smoke-box again, flow to the stokehold, enter the pyrotechnics pipe in the drum then, enter the air preheater in the back-end ductwork at last, this serpentine exhaust gases passes has increased the flow process of flue gas greatly, helps the heat exchange of boiler.
For anthracite is fully burnt, burner hearth suitably can be enlarged.The length and the width of fire grate (7) are increased by 25～45%, 8～15% respectively than existing boiler with capacity, and as the boiler of similar 4.2MW, the length of its fire grate is lengthened to 6m by 4.2m, and width is widened to 1.8m by 1.6m.The also corresponding lengthening of rear arch (8) of burner hearth (9) top, the rear arch cross section is slightly reclinate broken line shape, and the cross section of face arch (13) also is broken line shape, is " α " shape at intersection's flue gas stream of rear arch (8), face arch (13), fire grate (7) and aditus laryngis (14).This design helps the raising of burner hearth central temperature, has prolonged the coal-fired time of staying on fire grate simultaneously, and the chimney arch opacity reaches 88～92%.
The air-distribution device of this boiler contains some groups of closed air compartments (3), and embodiment contains 4～8 groups of closed air compartments (3), and two air compartments of every configuration set (3) are set up in parallel in the middle of fire grate (7).The structure of its air compartment is shown in Fig. 3,4.Air compartment (3) cross section is trapezoidal, the rear end of air compartment is provided with dividing plate (43), two ash ports (40) are set under the air compartment, dispose movably dust block board (39) on the ash port (40), the air inlet of air compartment front end (4) is provided with the air regulating board (37) that is driven by pull bar (36).
The embodiment of Fig. 1 is provided with six groups of totally 12 air compartments, and their divide two rows to be distributed in the middle of the fire grate, be fixed in the support (6) of fire grate, the supply of each air compartment air quantity by boiler two downsides main air case (35) in louver finish.Fig. 3, each air compartment of 4 are established two ash ports (40), and dust block board (39) can laterally move in hawk positioning track (41) by drawing grey bar (38), guarantees to leak ash (slag) and enters lower fire grating from air compartment at any time, and ash bin falls before entering again.The adjusting of each air compartment air quantity is by operation pull bar (36), and the air regulating board of drive (37) moves in air regulating board location (42), reaches the linear regulation air quantity.Need big burning zone at air quantity, the air regulating board aperture of corresponding air compartment is increased, need little burning zone, the air regulating board aperture of corresponding air compartment is reduced at air quantity.Avoid the relative deficiency and the string wind of air quantity, reached rationally effectively air distribution.The autonomous bellows of air distribution (35) enter air inlet (4) from the top down, enter air compartment (3) again, form isopiestic state in air compartment.This air intake prevents to form the dust stratification dead angle to helping deashing.
The water circulation system structure of this boiler as shown in Figure 5.It is forced circulation that its body water circulation system adopts main body, and the part is the compound recycle mode of Natural Circulation.Forced circulation and Natural Circulation partly are and are symmetrical set, and two kinds of circulations of water are carried out simultaneously in whole runnings of boiler.
Its Natural Circulation partly comprises drum (20), two isolation water tanks (46) of left and right side lower condensate sump rear end, be symmetrical set, UNICOM's drum (20) and the some tedges (25) and the down-comer (25 ') of isolating water tank (46).The every side of tedge (25) of the Natural Circulation part of Fig. 5 is provided with 8～14.
The flow process of its water circulation system is described below.The Natural Circulation flow process:
The forced circulation flow process is divided following three loops.
Back side loop: water source → water pump → water inlet pipe → rear set box → rear arched tube → excessively collect case
The loop, left side:
Loop, right side:, repeat no more with left loop.
Advantage of the present utility model is as follows.It has adopted main body is that forced circulation and part are the compound recycle mode of Natural Circulation, and the serpentine exhaust gases passes can form the burner hearth that " α " shape flue gas flows, and organize the technical measures such as air-distribution device that the closed air compartment is formed more, and reasonable in design, flue gas flow is long, sufficient combustion operates steadily, and the thermal efficiency is up to 84.62% (contain preheater and reclaim heat), it is big to exert oneself, reach 148%, furnace insulation is good, and surface temperature is low, radiation loss is little, and dust exhausting concentration reduces greatly.
Its exemplary embodiments product (FXL 4.2-0.8/95/70-WIII) is through the test of Yangquan City power-saving technology service centre, and its main performance sees Table one.
Table one
| Project | Symbol | Data | Unit |
| The anti-balance efficiency of the comprehensive energy consumption MW unit consumption of the boiler output unit consumption of fuel smoke evacuation temperature air coefficient table surface temperature boiler slag carbon content ash phosphorus content positive balance efficiency efficient that only weighs | D B ∑Q pd tpy αpy tb Clz Ch ηl ηf ηj | 6.23 1137.97 939.74 150.89 172.00 1.81 33.00 19.60 67.33 84.62 81.06 81.51 | MW kg/h KgN coal/coal/MW ℃ ℃ of % % % of h kgN % % |
Claims (7)
1, a kind of combined-circulation chain anthracite-fired boiler comprises: smoke-box, drum (20), air preheater (26) and the water circulation system of base, traveling-grate stoker (7), air-distribution device, burner hearth (9), burner hearth top is characterized in that:
Described air-distribution device contains some groups of closed air compartments (3), and two air compartments of every configuration set (3) are set up in parallel in the middle of traveling-grate stoker (7):
Some pyrotechnics pipes (19) are set in the described drum (20);
Smoke-box (10) and last smoke-box (17) during described smoke-box divides, middle smoke-box (10), the some pyrotechnics pipes of going up in smoke-box (17) and the described drum (20) (19) constitute the serpentine exhaust gases passes;
Described water circulation system main body is the forced circulation part, and the part is the Natural Circulation part, and Natural Circulation partly is arranged at the rear portion of body of heater.
2, boiler according to claim 1 is characterized in that: described air-distribution device contains 4～8 groups of closed air compartments (3).
3, according to claim 1 or 2 described boilers, it is characterized in that: described air compartment (3) cross section is trapezoidal, the rear end of air compartment is provided with division board (43), two ash ports (40) are set under the air compartment, dispose movably dust block board (39) on the ash port (40), the air inlet of air compartment front end (4) is provided with the air regulating board (37) that is driven by pull bar (36).
4, boiler according to claim 1, it is characterized in that: the Natural Circulation of water circulation system partly comprises drum (20), two isolation water tanks (46) of left and right side lower condensate sump rear end, be symmetrical set, UNICOM's drum (20) and the some tedges (25) and the down-comer (25 ') of isolating water tank (46).
5, boiler according to claim 4 is characterized in that: the every side of tedge (25) of described Natural Circulation part is provided with 8～14.
6, boiler according to claim 1 is characterized in that: 80～140 pyrotechnics pipes (19) are set in the described drum (20);
7, boiler according to claim 1, it is characterized in that: the length and the width of described fire grate (7) increase by 25～45%, 8～15% respectively than existing boiler, rear arch (8) cross section of burner hearth (9) top is slightly reclinate broken line shape, the cross section of face arch (13) is broken line shape, is " α " shape at intersection's flue gas stream of rear arch (8), face arch (13), fire grate (7) and aditus laryngis (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99203392 CN2373743Y (en) | 1999-02-09 | 1999-02-09 | Anthracite boiler using compound circulating and with chain fire grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99203392 CN2373743Y (en) | 1999-02-09 | 1999-02-09 | Anthracite boiler using compound circulating and with chain fire grate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373743Y true CN2373743Y (en) | 2000-04-12 |
Family
ID=33998515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99203392 Expired - Fee Related CN2373743Y (en) | 1999-02-09 | 1999-02-09 | Anthracite boiler using compound circulating and with chain fire grate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373743Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363527A (en) * | 2013-07-22 | 2013-10-23 | 华南理工大学 | Fire grate mechanism of marine incinerator |
-
1999
- 1999-02-09 CN CN 99203392 patent/CN2373743Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363527A (en) * | 2013-07-22 | 2013-10-23 | 华南理工大学 | Fire grate mechanism of marine incinerator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201047663Y (en) | Double barrel transverse type waterpipe coke boiler | |
| CN2373743Y (en) | Anthracite boiler using compound circulating and with chain fire grate | |
| CN2152182Y (en) | Tube changeable combined hot wind furnace | |
| CN2256085Y (en) | Coal air-heating furnace | |
| CN2935003Y (en) | Single drum horizontal type coal hot water boiler with boiler shell coal-saver angle pipe support structure | |
| CN1314922C (en) | Horizontal double-layer grate back firing boiler | |
| CN211233362U (en) | Double-drum double-hearth composite combustion settling chamber corner tube boiler | |
| CN209944290U (en) | Double-hearth composite combustion settling chamber corner tube boiler | |
| CN201327177Y (en) | Automatic two-way flame-gathering multi-cavity composite biomass-burning boiler | |
| CN112268270A (en) | Skid-mounted water pipe type low-nitrogen gas steam boiler | |
| CN211976863U (en) | L-shaped waste heat boiler for coal-to-olefin device | |
| CN206398686U (en) | Biomass direct-combustion boiler | |
| RU2220379C2 (en) | Water heater | |
| CN2126901Y (en) | Horizontal pipe hot-water boiler | |
| CN2441079Y (en) | Coal boiler with heating pipes | |
| CN203687352U (en) | Energy-saving environment-friendly boiler barrel longitudinally-arranged inclined push reciprocating grate hot water boiler | |
| CN215892427U (en) | Biomass particle hot blast stove | |
| CN216244878U (en) | Large-scale water pipe gas boiler of pin-connected panel | |
| CN220551890U (en) | Efficient angular tube type biomass steam boiler | |
| CN212108474U (en) | Water-cooled high-level feeding device of biomass boiler | |
| CN211060091U (en) | Biomass energy-saving steam boiler | |
| CN219160312U (en) | Double-drum longitudinally-arranged gas steam boiler | |
| CN217441595U (en) | Novel corner tube type superheated steam water tube boiler | |
| CN2101821U (en) | Horizontal circulating combustion boiler | |
| CN2256064Y (en) | Vertical reciprocating square water boiler working at normal pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |