CN1061844A - Stepped drive fire grate - Google Patents
Stepped drive fire grate Download PDFInfo
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- CN1061844A CN1061844A CN 90109668 CN90109668A CN1061844A CN 1061844 A CN1061844 A CN 1061844A CN 90109668 CN90109668 CN 90109668 CN 90109668 A CN90109668 A CN 90109668A CN 1061844 A CN1061844 A CN 1061844A
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- grate
- fire grate
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Abstract
The invention discloses a kind of stepped drive fire grate that changes existing combustion system.Be arranged in order by furnace grate component and form closed driving system and under the drive of driving-chain, as escalator, move up from bottom to top.Coal-in port is following, and slag notch makes from bottom to top stepped upwards operation on grate surface of fire coal last, finishes each combustion phases.Coal-fired traffic direction and flue gas ascent direction are basic identical, and coal seam in service produces the changing of the relative positions and prevented coking.Furnace grate component has last air vent and primary air separating duct.
Description
The present invention relates to a kind of stepped drive fire grate, is a kind of grate firing equipment that is applied to Industrial Boiler and kiln buring solid fuel.
Existing grate firing combustion apparatus is distinguished from combustion system and is mainly contained two kinds of reciprocal grate and traveling-grate stokers.The combustion process of chain furnace is that fire grate is constantly moved coal brought in the stove by coal bunker behind stove by the stokehold and catches fire, burns, burnouts, discharges slag gradually.Coal-fired in stove with the traveling-grate stoker level run.Coal-in port and slag notch are tending towards level.The fuel of reciprocal grate catches fire gradually, burning, after-flame, moves down along ladder by the reciprocating motion of movable furnace grate plate via coal-in port, to the last discharges the slag mouth.Coal-fired traffic direction is from top to bottom, and slag notch is lower than coal feed point (compile " Industrial Boiler " and king referring to Xi'an Communications University and mill " boiler and the auxiliary equipment thereof " that people such as celebrating writes).The problem that these combustion apparatus mainly exist is the development along with flame mechanism, high-temperature flue gas and high temperature coal are parted company with each other, can't cause mutual insulation, short combustion, promote to mix, promote the condition of overheavy firing, therefore, it is insufficient to burn, the boiler slag carbon content height, flue dust is big, and ubiquity wastes energy and contaminated environment.People are from the ventilation of fire grate itself, the coal-fired changing of the relative positions and the shape of chimney arch for this reason, and many-sides such as secondary wind are improved so that creates coal-fired and the high-temperature flue gas a kind of like this combustion atmosphere of overheavy firing (routine Chinese patent 85100988 88208920.x, publication number of having authorized is 90100514.2) of mutually promoting.But because coal-fired traffic direction remains from top to bottom or level run, high-temperature flue gas and high temperature coal can't be realized mutually closely effect mutually, therefore are difficult to receive desirable effect.
The objective of the invention is: set about to realize the change of combustion system from the structure that changes existing combustion apparatus.Design a kind of new grate firing combustion apparatus, fire coal is burnt therein more fully reach the raising efficiency of combustion, smoke abatement and dust control, the effect of energy savings.
The solution of the present invention is: the stepped from bottom to top transmission of the kind of drive that makes burning realizes the overall process of burning to cause each stage of fuel combustion bottom-up along highly distributing.The furnace grate component of promptly forming fire grate is arranged in order, under the drive of driving-chain (7), move up as staged the escalator from bottom to top, make and coal-firedly on fire grate segment, locate the stepped slag-drip opening (8) that is positioned at combustion apparatus top that moves to and locate to slag tap by the coal bunker that is positioned at the transmission system bottom (9).Furnace grate component (1) is driven by driving-chain.Furnace grate component is arranged in order the circulating transmission system that forms sealing.The gap must be left between grate surface (14) and the gap will keep constant.Must there be last air vent and preceding ventilating duct in above the grate surface of each furnace grate component and front, makes fire grate that the function of level air-supply and vertical ventilation be arranged.The traffic direction of combustion layer and high-temperature flue gas flow direction are made progress substantially roughly be parallel shape.
The present invention has formed a kind of new combustion system.Coal-fired gas radiation and the furnace wall radiation that enters fire grate horizontal segment absorption fuel bed top from coal bunker is preheated the operation of lighting along with fire grate and enters the ladder ascent stage, and the fire grate assembly rises gradually and becomes staged.Fire grate head primary air separating duct (13) is progressively opened and is made hot-air blow to new coal approach axis, and strengthens air quantity gradually, makes the more abundant of coal combustion.So fire coal has prevented coking owing to stepped rising coal seam obtains the changing of the relative positions.Rise to the ladder section when last, the fire grate air-supply is taken away institute's heat content in the lime-ash through the lime-ash of porous matter near slag notch, sends the burner hearth sky to, plays the secondary wind action, quickens the unburnt gas burning, has eliminated flue dust.Slag physics heat is fully used, and the lime-ash self-temperature reduces, and has prevented slagging scorification.In the section of slagging tap, fire grate tends to level again, makes slag blanket obtain the changing of the relative positions, is convenient to slag and gets rid of from fire grate.The present invention makes coal-in port down, has reduced the power that defeated coal operation is consumed.Slag notch is at the last slag removal of being convenient to, and technology arrangement is very convenient.
It is stepped from bottom to top when mobile that the combustion system difference of the present invention and existing combustion apparatus is fire coal at the fire grate band, and the fuel that is in operation has vertical changing of the relative positions peace row to move with fire grate; The fuel bed traffic direction all makes progress with the flow of flue gas direction and is tending towards parallel substantially, has caused stereo burning; The fire grate air-supply has level air-supply and vertical ventilation dual mode, coal-fired multiaspect wind-engaging.Horizontal air supply direction faces toward into coal direction, and with the crosscut of flue gas ascent direction, the high temperature coal that helps blowing afloat covers on new coal, quickens igniting of new coal.Also help high-temperature flue gas and form the turbulent shape postpone retention time, help the fusion of fuel gas and air, accelerated combustion, after-flame, smoke abatement and dust control improves efficiency of combustion.Especially be apparent that because burner hearth internal combustion high-temperature region is had on the stepped fire grate shutoff of high temperature coal, in stove, played the effect of high temperature arch, more help flue dust after-flame and anthracite and grill thoroughly, so its energy-saving and smoke-removing effect of the combustion apparatus of this species stage ascending manner is obvious especially.
The drawings and Examples explanation:
Fig. 1 is principle of the invention figure.
Furnace grate component (1) is under the effect of chain or conveyer belt (7), along the stepped slag notch (8) that rises to of guide rail (3).Coal-in port (9) and slag notch (8) are located conveyer belt all the level run section.Direction shown in the thin arrow is the fire grate air supply direction among the figure.The traffic direction of coal is shown in big arrow among the figure.Thin dashed line arrow and thin dashed line are represented flue gas turbulent condition and flue gas ascent direction among the figure.
1,2-furnace grate component; The 3-guide rail; The 4-drive shaft; The 5-drive system; The 6-support; The 7-driving-chain.
Fig. 2 is one embodiment of the present of invention.
Fire grate segment (10) is arranged piecewise by arranging by pin (11) and is fixed on upward formation furnace grate component (1) of fire grate beam (20).Fire grate beam main shaft (21), main wheel (22), auxiliary wheel (23), respectively and driving-chain (7) and guide rail (3) cooperate stepped upwards operation, fire grate segment (10) is arranged piecewise and is constituted grate surface (14), and air vent on the fire grate (12) and primary air separating duct (13) are arranged between fire grate segment.
Embodiment 2:
Fire grate segment is that full wafer constitutes, and air vent is arranged on the grate surface, and full wafer is contained on the shelf-type fire grate beam.Have primary air separating duct on the shelf-type fire grate beam, and main shaft, main wheel and auxiliary wheel are arranged.
Embodiment 3:
Fire grate segment is that multi-disc is arranged in piecewise on the shelf-type fire grate beam and constitutes fire grate, constitutes between fire grate segment and goes up air vent, has primary air separating duct on the shelf-type fire grate beam.
Embodiment 4:
Fire grate segment is a multi-disc, is arranged in piecewise on the shelf-type fire grate beam to constitute grate surface.Constitute between fire grate segment and go up air vent and primary air separating duct.
Claims (5)
1, a kind of stepped drive fire grate, the furnace grate component (1) that it is characterized in that forming fire grate be arranged in order form enclosed transmission system (6,7,3,4,5) under the drive of driving-chain (7) from bottom to top as stepped moving up the escalator, make coal-fired traffic direction by the following horizontal segment of coal-in port (9) to the staged fire grate, and by descending horizontal segment progressively to enter acclivitous ladder section, locate to slag tap up to the slag notch that is positioned at transmission system top (8), whole combustion process is carried out from bottom to top.The grate surface (14) of above-mentioned furnace grate component (1) must have last air vent and primary air separating duct to make fire grate that level air-supply and vertical ventilation be arranged.Must be gapped between the grate surface (14) of furnace grate component (1), and the gap is constant.
2, a kind of furnace grate component according to claim 1, it is characterized in that above-mentioned grate surface (14) is arranged by fire grate bearing pin (11) piecewise by fire grate segment (10) is fixed on the fire grate beam (20), have on the fire grate beam (20) fire grate beam main shaft (21), driving wheel (22), auxiliary wheel (23) respectively and driving-chain (7) and guide rail (3) cooperate, last air vent (12) and fire grate primary air separating duct (13) are arranged between fire grate segment.
3, a kind of furnace grate component according to claim 1, it is characterized in that above-mentioned fire grate segment (10) can full wafer be contained in constitutes grate surface (14) on the shelf-type fire grate beam, grate surface (14) has air vent (12) and directly contacts with coal-fired, carries primary air separating duct (13) on the shelf-type fire grate beam (20).
4, a kind of furnace grate component according to claim 1, it is characterized in that above-mentioned fire grate segment (10) also can be arranged in shelf-type fire grate beam (20) piecewise and go up the formation grate surface, constitute between fire grate segment and go up air vent (12), the shelf-type fire grate beam has primary air separating duct (13).
5, a kind of furnace grate component according to claim 1 is characterized in that above-mentioned fire grate segment (10) also can be arranged in shelf-type fire grate beam (20) piecewise and go up formation grate surface (14), constitutes between fire grate segment and goes up air vent (12) and primary air separating duct (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109668 CN1061844A (en) | 1990-12-01 | 1990-12-01 | Stepped drive fire grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109668 CN1061844A (en) | 1990-12-01 | 1990-12-01 | Stepped drive fire grate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1061844A true CN1061844A (en) | 1992-06-10 |
Family
ID=4881540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90109668 Pending CN1061844A (en) | 1990-12-01 | 1990-12-01 | Stepped drive fire grate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061844A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434800C (en) * | 2007-01-31 | 2008-11-19 | 袁水成 | Rotary water-cooled grate boiler |
| CN105258139A (en) * | 2015-10-19 | 2016-01-20 | 张家界三木能源开发有限公司 | Automatic feeding and layered burning flame bridge |
-
1990
- 1990-12-01 CN CN 90109668 patent/CN1061844A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434800C (en) * | 2007-01-31 | 2008-11-19 | 袁水成 | Rotary water-cooled grate boiler |
| CN105258139A (en) * | 2015-10-19 | 2016-01-20 | 张家界三木能源开发有限公司 | Automatic feeding and layered burning flame bridge |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |