CN101413658B - Gas making compound combustion chain furnace - Google Patents
Gas making compound combustion chain furnace Download PDFInfo
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- CN101413658B CN101413658B CN 200810079816 CN200810079816A CN101413658B CN 101413658 B CN101413658 B CN 101413658B CN 200810079816 CN200810079816 CN 200810079816 CN 200810079816 A CN200810079816 A CN 200810079816A CN 101413658 B CN101413658 B CN 101413658B
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- coal
- furnace
- grate
- gas
- vertical heater
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Abstract
The invention relates a gas making compound combustion chain furnace; a preposing preburning vertical furnace is arranged at the front end of a chain grate, the two sides of the inner wall of the vertical furnace are provided with wind chambers provided with air outlets; a fire coal inlet which is arranged at one end of the upper part of the preposing preburning vertical furnace is connected with a coal supply scuttle, and the other end of the upper part of the vertical furnace is provided with a coal gas outlet that is communicated with a grate-fired furnace; the lower part of the preposing preburning vertical furnace is provided with a coal outlet which is communicated with the chain grate; a gas chamber is internally provided with an induction air duct, the front end of the grate-fired furnace is provided with a declinate face arch used for supplemental firing and a gas lighting-up tuyere, and the preposing preburning vertical furnace is arranged in the front of the chain grate; the coal is on fire to burn in advance in the preposing preburning vertical furnace, and coal gas is generated in a following way, so that furnace combustion is greatly strengthened, and the flying ash quantity is further reduced, thus not only maintaining the advantages of the combustion of the chain grate, but also thoroughly overcoming the inherent disadvantages of the combustion of the chain grate.
Description
Technical field
The present invention relates to a kind of traveling-grate stoker coal gas compound combustion chain furnace with self-made gas function.
Technical background
The traveling-grate stoker burning is the most widely used combustion technology of coal-burned industrial boiler and Industrial Stoves, its advantage is that system is simple, reliable, the operation power consumption is low, the flying dust share is more much smaller than coal dust, water-coal-slurry, CFBC, the gas cleaning cost is low, lime-ash is processed easily, relatively be fit to Industrial Boiler and Industrial Stoves are small-sized and the characteristics of disperseing, the countries in the world coal-burned industrial boiler is all take chain-grate boiler as main.Its intrinsic shortcoming is can not catch fire immediately after fire coal enters burner hearth, need to be through one section long drying and preheating process, drying and preheating and the heat that needs with postignition are from burner hearth burned flame and the radiant heat that encircleed before and after the roasting red refractory material, coal can only be first drawing from the upper surface in coal seam, the flame that is drawing is propagated below the coal seam more gradually, and the needed air that burns is to send facing up from lower, the reverse circulation way of this flame and air is unfavorable for burning very much, so traveling-grate stoker combustion intensity and efficiency of combustion are low, it is little to be difficult to again to adapt to volatile matter, the coal that moisture or ash content are large.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of combustion intensity is large, efficient is high, it is little to pollute, and fire coal need not preliminary treatment, the gas making compound combustion chain furnace of additional energy consumption.
The present invention adopts following technical scheme:
The present invention is provided with a preposition pre-burning vertical heater at the traveling-grate stoker front end, its inwall both sides are provided with the air compartment with air outlet, top one end of preposition pre-burning vertical heater has coal-fired import to link to each other with feeding-coal bucket, the other end is provided with gas exit and grate-fired furnace is connected, the bottom of preposition pre-burning vertical heater has coal outlet to be connected with traveling-grate stoker, in fuel chamber, be provided with the injection airduct, be provided with dipping type face arch and the coal gas ignition mouth of overheavy firing at the grate-fired furnace front end, preposition vertical heater air blast and injection airduct are connected, and preposition vertical heater air blast was connected by air compartment communicating pipe and air compartment.
The preposition pre-burning vertical heater of the present invention inwall vertical section becomes inverted trapezoidal.
The present invention is provided with the face arch bottom air compartment that is connected by fire grate bottom air inlet and boiler blower in the lower end of dipping type face arch.
Good effect of the present invention is as follows:
The present invention arranges a preposition pre-burning vertical heater in the traveling-grate stoker front portion, coal shifts to an earlier date ignition in preposition pre-burning vertical heater, supervene coal gas, the whole thickness in coal seam that enters burner hearth on the traveling-grate stoker is ignition all, the dipping type face arch is arranged in the burner hearth, and upper furnace has gas-fired, and the stove internal combustion is strengthened greatly, the flying dust share further reduces, the advantage that had both kept the traveling-grate stoker burning has thoroughly overcome again the intrinsic shortcoming of traveling-grate stoker burning.When adopting normal combustion of the present invention, boiler slag carbon content can drop to below 10～12%, compares with general chain-grate boiler, and the thermal efficiency can improve 4～5 percentage points, and flue dust initial ejection concentration reduces by 30～40%, coal gas blackness stably reaching standard.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 for the A-A of accompanying drawing 1 of the present invention to the sectional structure schematic diagram.
In the accompanying drawings: 1 preposition pre-burning vertical heater, 2 coal outlets, 3 traveling-grate stokers, 4 air outlets, 5 louvers, 6 air compartments, 7 coal-fired imports, 8 feeding-coal buckets, 9 fuel chamber, 10 injection airducts, 11 coal seam free accumulation faces, 12 gas exits, 13 gas burners, 14 grate-fired furnaces, 15 Boiler doors, 16 dipping type face arch, 17 face arch bottom air compartments, 18 coal gas ignition mouths, 19 boiler heating surfaces, 20 combustion gas flame-observing holes, 21 inspection openings, 22 fire grate bottom air inlets, 23 preposition vertical heater air blasts, 24 air compartment communicating pipes, 25 injection airduct air registers, 26 coal seams.
The specific embodiment
As shown in Figure 1, the present invention is provided with a preposition pre-burning vertical heater 1 at traveling-grate stoker 3 front ends, its inwall both sides are provided with the air compartment 6 with air outlet 4, top one end of preposition pre-burning vertical heater 1 has coal-fired import 7 to link to each other with feeding-coal bucket 8, the other end is provided with gas exit 12 and grate-fired furnace 14 is connected, the bottom of preposition pre-burning vertical heater 1 has coal outlet 2 to be connected with traveling-grate stoker 3, in fuel chamber 9, be provided with injection airduct 10, be provided with dipping type face arch 16 and the coal gas ignition mouth 18 of overheavy firing at grate-fired furnace 14 front ends, preposition vertical heater air blast 23 and injection airduct 10 are connected, as shown in Figure 2, preposition vertical heater air blast 23 is connected by air compartment communicating pipe 24 and air compartment 6.As shown in Figure 2, the present invention is provided with the face arch bottom air compartment 17 that is connected by fire grate bottom air inlet 22 and boiler blower in the lower end of dipping type face arch 16.
There is a preposition pre-burning vertical heater 1 traveling-grate stoker of the present invention 3 front portions, its inwall vertical section becomes inverted trapezoidal, there are air compartment 6 and air outlet 4 in the inverted trapezoidal two sides, top has coal-fired import 7 to link to each other with feeding-coal bucket 8, the bottom has coal outlet 2 to communicate with traveling-grate stoker 3, the fuel chamber 9 that the free accumulation face 11 that forms on the preposition vertical heater coal seam and boiler heating surface 19 form, between boiler heating surface 19 pipes, be provided with injection airduct 10, be provided with dipping type face arch 16 and the coal gas ignition mouth 18 of overheavy firing at grate-fired furnace 14 front ends, combustion gas flame-observing hole 20, preposition vertical heater air blast 23, inspection opening 21, air compartment communicating pipe 24, injection airduct air register 25 parts such as grade.The present invention is in use fallen spent coal on the traveling-grate stoker 3 by the coal outlet 2 of preposition pre-burning vertical heater 1 bottom, and ablaze coal seam 26 enters respectively grate-fired furnace 14 with the gas burner 13 of supervening, and forms compound combustion.The present invention had both kept the advantage of traveling-grate stoker burning, need not specially fire coal to be carried out preliminary treatment, had effectively overcome again the intrinsic shortcoming of traveling-grate stoker burning, and combustion intensity is large, efficient is high, it is little to pollute, and was a kind of clean combustion of coal chain furnace that does not increase additional energy consumption.
Use the present invention, when putting into operation for the first time, as shown in Figure 1, open Boiler door 15, on traveling-grate stoker 3, drop into kindling material and the new coal of part first, successively open boiler induced-draft fan and air blast, behind new coal ignition, turn off the blast, it is interior as kindling material that the spent coal shovel of a part is entered preposition pre-burning vertical heater 1, another part pushes dipping type face arch 16 belows, add respectively suitably new coal on traveling-grate stoker 3 spent coals and in the preposition vertical heater by Boiler door 15 and feeding-coal bucket 8, as shown in Figure 2, reopen boiler blower and pass through fire grate bottom air inlet 22 to the 17 interior air-supplies of face arch bottom air compartment, dipping type face arch 16 underlying seams 26 interior ignitions form flame, open preposition vertical heater air blast 23, regulate simultaneously injection airduct air register 25, air enters air compartment 6 by preposition vertical heater air compartment communicating pipe 24, provide the burning required air by air outlet 4 to preposition pre-burning vertical heater 1 interior coal seam 26, the large I of air quantity is regulated by louver 5, after new coal combustion wherein is stable, by feeding-coal bucket 8, to preposition pre-burning vertical heater 1 interior normal coal, get final product self-assembling formation coal seam free accumulation face 11 through coal-fired import 7.Coal seam in the preposition pre-burning vertical heater 1 will form oxidation, reduction, destructive distillation, drying layer, the coal gas that produces is through fuel chamber 9, under the double action of boiler induced-draft fan and injection airduct 10, enter dipping type face arch 16 tops, flame by 18 ejections of coal gas ignition mouth is lighted burning, speed according to payload adjusting chain fire grate 3, preposition pre-burning vertical heater 1 interior spent coal is sent into continuously grate-fired furnace 14 by coal outlet 2 by traveling-grate stoker 3 and is burnt away, enter out pit until after-flame is slag, realize the coal gas on top and the coal two-phase compound combustion of bottom.
Claims (2)
1. gas making compound combustion chain furnace, it is characterized in that being provided with a preposition pre-burning vertical heater (1) at traveling-grate stoker (3) front end, the inwall both sides of front preheating process vertical heater (1) are provided with the air compartment (6) with air outlet (4), one end of the upper furnace of preposition pre-burning vertical heater (1) has coal-fired import (7) to link to each other with feeding-coal bucket (8), the other end of upper furnace is provided with gas exit (12) and grate-fired furnace (14) is connected, the bottom of preposition pre-burning vertical heater (1) has coal outlet (2) to be connected with traveling-grate stoker (3), in the fuel chamber (9) of upper furnace, be provided with injection airduct (10), be provided with dipping type face arch (16) and the coal gas ignition mouth (18) of overheavy firing at grate-fired furnace (14) front end, preposition vertical heater air blast (23) and injection airduct (10) are connected, and preposition vertical heater air blast (23) is connected by air compartment communicating pipe (24) and air compartment (6).
2. a kind of gas making compound combustion chain furnace according to claim 1 is characterized in that the inwall vertical section of preposition pre-burning vertical heater (1) becomes inverted trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810079816 CN101413658B (en) | 2008-11-21 | 2008-11-21 | Gas making compound combustion chain furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810079816 CN101413658B (en) | 2008-11-21 | 2008-11-21 | Gas making compound combustion chain furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101413658A CN101413658A (en) | 2009-04-22 |
| CN101413658B true CN101413658B (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810079816 Expired - Fee Related CN101413658B (en) | 2008-11-21 | 2008-11-21 | Gas making compound combustion chain furnace |
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| Country | Link |
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| CN (1) | CN101413658B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671694A (en) * | 2019-09-30 | 2020-01-10 | 大唐东营发电有限公司 | Environment-friendly boiler for power plant |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000029788A1 (en) * | 1998-11-17 | 2000-05-25 | Kmw Energi Ab | Solid fuel furnace |
| RU2171438C2 (en) * | 2000-07-31 | 2001-07-27 | Белгородская государственная технологическая академия строительных материалов | Heat exchanger arranged behind the rotating furnace |
| CN2608841Y (en) * | 2003-03-05 | 2004-03-31 | 张成基 | Semi-gas cleaning burning environmental protection energy-saving boiler |
| CN1844817A (en) * | 2006-05-19 | 2006-10-11 | 哈尔滨工业大学 | Coal-fired hot blast furnace with pre-combustion hearth and smoke circulating device |
| CN201310876Y (en) * | 2008-11-21 | 2009-09-16 | 河北华林机械设备有限公司 | Gas-making compound combustion chain furnace |
-
2008
- 2008-11-21 CN CN 200810079816 patent/CN101413658B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000029788A1 (en) * | 1998-11-17 | 2000-05-25 | Kmw Energi Ab | Solid fuel furnace |
| RU2171438C2 (en) * | 2000-07-31 | 2001-07-27 | Белгородская государственная технологическая академия строительных материалов | Heat exchanger arranged behind the rotating furnace |
| CN2608841Y (en) * | 2003-03-05 | 2004-03-31 | 张成基 | Semi-gas cleaning burning environmental protection energy-saving boiler |
| CN1844817A (en) * | 2006-05-19 | 2006-10-11 | 哈尔滨工业大学 | Coal-fired hot blast furnace with pre-combustion hearth and smoke circulating device |
| CN201310876Y (en) * | 2008-11-21 | 2009-09-16 | 河北华林机械设备有限公司 | Gas-making compound combustion chain furnace |
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| Publication number | Publication date |
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| CN101413658A (en) | 2009-04-22 |
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Granted publication date: 20130403 Termination date: 20191121 |