CN201475988U - Fly ash recirculation device - Google Patents

Fly ash recirculation device Download PDF

Info

Publication number
CN201475988U
CN201475988U CN200920139183XU CN200920139183U CN201475988U CN 201475988 U CN201475988 U CN 201475988U CN 200920139183X U CN200920139183X U CN 200920139183XU CN 200920139183 U CN200920139183 U CN 200920139183U CN 201475988 U CN201475988 U CN 201475988U
Authority
CN
China
Prior art keywords
ash
flow guide
water conservancy
conservancy diversion
valve
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
Application number
CN200920139183XU
Other languages
Chinese (zh)
Inventor
刘伟
陈飞
叶承勇
李传强
黄龙飞
徐立俊
饶盛进
吴金玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Yinlu Heavy Industry Co Ltd
Original Assignee
Xiamen Yinlu Heavy Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xiamen Yinlu Heavy Industry Co Ltd filed Critical Xiamen Yinlu Heavy Industry Co Ltd
Priority to CN200920139183XU priority Critical patent/CN201475988U/en
Application granted granted Critical
Publication of CN201475988U publication Critical patent/CN201475988U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model discloses a fly ash recirculation device. The device comprises an ash collecting hopper, an upper on-off valve, a flow guide ash bin, a lower on-off valve, an ash falling pipe, an air inlet pipe, and a flow guide pipe, wherein, the upper on-off valve is mounted between the ash collecting hopper and the flow guide ash bin; the lower on-off valve is mounted between the flow guide ash bin and the ash falling pipe; the inlet end of the flow guide pipe is connected to the side wall of the flow guide ash bin and is communicated with the inner chamber of the flow guide ash bin; the output end of the flow guide pipe is communicated with the main combustion zone of a hearth; the air inlet pipe is mounted on the side wall of the flow guide ash bin; and the air outlet of the air inlet pipe is communicated with the inlet of the flow guide pipe. In the utility model, the upper on-off valve and the lower on-off valve are respectively arranged at the upper and the lower parts of the flow guide ash bin, and the pipelines of the air inlet pipe and the flow guide pipe are arranged in the passage between the two valves, so that fly ash in the passage is blown to the flow guide pipe by air entering from the air inlet pipe, and then enters a combustion high-temperature zone again to participate in combustion through the flow guide pipe. Therefore, the utility model has the advantages that the boiler combustion efficiency is greatly improved, and the heat loss is low.

Description

The flying dust EGR
Technical field
The utility model relates to a kind of boiler, particularly relates to a kind of flying dust EGR.
Background technology
Fast assembling chain grate boiler, its compact conformation, small investment, advantage such as installation period is short, and is simple to operate, easy to maintenance and being applied.This type boiler divides the assembling of two big parts, boiler by up and down two form, two big parts behind the zoarium, carry out can coming into operation after part furnace wall, water power, blower fan, the pipeline installation on-site.Upper body comprises the both walls water-cooling wall, front-back wall water-cooling wall and convection bank part.The traveling-grate stoker of forward and backward, two side walls and bottom, front and back chimney arch and bottom side wall are formed burner hearth, organize the burning of fuel and absorb radiations heat energy; The bottom comprises coal bunker, traveling-grate stoker etc.Combustion apparatus adopts the light-duty traveling-grate stoker of being convenient to safeguard.Fire coal enters on the fire grate by adding coal bunker, falls into mucking machine and discharge after burning.Air enters fire grate bottom subregion and enters siege from the air channel, cause the economizer of independent layout behind high-temperature flue gas (these several words have repeated) the process secondary backhaul of the falling S transversal flow convection heating surface after the high-temperature flue gas that fire coal produces in burning back on the grate burns, air preheater enters deduster, air-introduced machine is discharged through chimney at last.
This model semi-packaged boiler is owing to be subjected to the restriction of shipping height, and the burner hearth of boiler is arranged relatively low, and flying dust time of staying in burner hearth is short, fails completing combustion.The supporting device of existing semi-packaged boiler all can not be carried the high-temperature flue gas that comes out from burner hearth secretly a large amount of unburnt fuel particles and send the high-temperature region back to and participate in burning again, but after by ash bucket flying dust being collected, by the vertical discharge device of opening/shutting valve, thereby a large amount of unburnt fuel particles are discharged to chain fire-gate low-temperature space, cause the solid imperfect combustion, heat loss is big, and the thermal efficiency of boiler is low.(could change " cause the solid incomplete combustion loss to increase, the thermal efficiency of boiler reduces " into)
The utility model content
The purpose of this utility model is to provide a kind of heat loss big (heat loss is little), the flying dust EGR that the thermal efficiency is high.
For achieving the above object, technical solution of the present utility model is:
The utility model is a kind of flying dust EGR, it comprise flue-dust retainer, on open and close valve, water conservancy diversion Hui Cang, keying valve, ash tube, blast pipe, mozzle down; Contract in the described flue-dust retainer lower part outlet be communicated with water conservancy diversion ash storehouse, described ash tube be arranged on water conservancy diversion Hui Cang bottom and with water conservancy diversion ash storehouse be integral member; The described keying valve of going up is installed between flue-dust retainer and the water conservancy diversion ash storehouse, and following keying valve is installed between water conservancy diversion ash storehouse and the ash tube; The arrival end of described mozzle is connected on the sidewall in water conservancy diversion ash storehouse and with water conservancy diversion ash storehouse inner chamber and is communicated with, and its port of export is communicated with the main combustion zone of burner hearth; Described blast pipe is installed on the sidewall in water conservancy diversion ash storehouse and the inlet of air outlet and mozzle relative.
Described mozzle bending is downward, and the main combustion zone of the relative burner hearth of its outlet port.
After adopting such scheme, because the upper and lower of the utility model in water conservancy diversion ash storehouse is provided with respectively and opens and closes valve and following keying valve, in two valve center-aisle parts (that is: water conservancy diversion ash storehouse) blast pipe and two pipelines of mozzle are set, wind enters from blast pipe the flying dust of passage is sent into mozzle and reentered the participation burning of combustion high temperature zone by mozzle, thereby improved boiler combustion efficiency greatly, heat loss is little.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
The specific embodiment
As shown in Figure 1 and Figure 2 be the overall structure of boiler, it comprise heating surface 6 behind burner hearth 1, face arch 2, rear arch 3, fire grate 4, drum 5, the burner hearth, flue-dust retainer 7, on open and close valve 81, wall 12, main combustion zone 13, burning low-temperature space 14, water conservancy diversion ash storehouse 15, ash tube 16, air 17, fuel 18, wind storehouse 19 behind keying valve 82, blast pipe 9, mozzle 10, burner hearth front wall 11, the burner hearth down.
As shown in Figure 1, flying dust EGR of the present utility model comprise flue-dust retainer 7, on open and close valve 81, water conservancy diversion ash storehouse 15, keying valve 82, ash tube 16, blast pipe 9, mozzle 10 down.
Contract in the described flue-dust retainer 7 lower part outlet be communicated with water conservancy diversion ash storehouse 15, described ash tube 16 is arranged on water conservancy diversion ash 15 bottoms, storehouse and is integral member with water conservancy diversion ash storehouse 15; The described valve 81 that go up to open and close is installed between flue-dust retainer 7 and the water conservancy diversion ash storehouse 15, and following keying valve 82 is installed between water conservancy diversion ash storehouse 15 and the ash tube 16, on open and close valve 81 and can open respectively or close with following keying valve 82; The bending of described mozzle 10 mozzles downwards, its arrival end is connected on the sidewall in water conservancy diversion ash storehouse 15 and with water conservancy diversion ash storehouse 15 inner chambers and is communicated with, the main combustion zone 13 of its port of export and burner hearth 1 connection and relative burner hearth; Described blast pipe 9 is installed on the sidewall in water conservancy diversion ash storehouse 15 and the inlet of its air outlet and mozzle 10 relative, so that the air that is blown into can be blown into unburnt flying dust mozzle 10 and reenter 13 territories, combustion high temperature district by mozzle 10.
Operation principle of the present utility model:
Fuel (coal) 18 produces a large amount of high-temperature flue gas after burning on the fire grate 4.In combustion process, smaller particles is risen by air compartment 19 hollow air-blowings, and a part enters rear portion heating surface 6 with the high-temperature flue gas burner hearth 1 of flowing through, this part particle is short in the burner hearth time of staying, fail completing combustion, the heating surface district separates by inertial collision in the back, falls in the flue-dust retainer 7.Put into water conservancy diversion ash storehouse 15 by last keying valve 81, air enters water conservancy diversion ash storehouse 15 by blast pipe 9, the unburnt particle in the water conservancy diversion ash storehouse 15, delivers to the high main combustion zone of fire grate temperature through mozzle 10, continues to participate in burning.
Emphasis of the present utility model just is: the mozzle that is provided with double valve and is connected with main combustion zone.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims (2)

1. flying dust EGR is characterized in that: it comprise flue-dust retainer, on open and close valve, water conservancy diversion Hui Cang, keying valve, ash tube, blast pipe, mozzle down; Contract in the described flue-dust retainer lower part outlet be communicated with water conservancy diversion ash storehouse, described ash tube be arranged on water conservancy diversion Hui Cang bottom and with water conservancy diversion ash storehouse be integral member; The described keying valve of going up is installed between flue-dust retainer and the water conservancy diversion ash storehouse, and following keying valve is installed between water conservancy diversion ash storehouse and the ash tube; The arrival end of described mozzle is connected on the sidewall in water conservancy diversion ash storehouse and with water conservancy diversion ash storehouse inner chamber and is communicated with, and its port of export is communicated with the main combustion zone of burner hearth; Described blast pipe is installed on the sidewall in water conservancy diversion ash storehouse and the inlet of air outlet and mozzle relative.
2. flying dust EGR according to claim 1 is characterized in that: described mozzle bending is downward, and the main combustion zone of the relative burner hearth of its outlet port.
CN200920139183XU 2009-06-24 2009-06-24 Fly ash recirculation device Expired - Fee Related CN201475988U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920139183XU CN201475988U (en) 2009-06-24 2009-06-24 Fly ash recirculation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920139183XU CN201475988U (en) 2009-06-24 2009-06-24 Fly ash recirculation device

Publications (1)

Publication Number Publication Date
CN201475988U true CN201475988U (en) 2010-05-19

Family

ID=42412240

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920139183XU Expired - Fee Related CN201475988U (en) 2009-06-24 2009-06-24 Fly ash recirculation device

Country Status (1)

Country Link
CN (1) CN201475988U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102980181A (en) * 2012-11-06 2013-03-20 镇江市电站辅机厂有限公司 Circulating fluidized bed boiler fly ash recirculation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102980181A (en) * 2012-11-06 2013-03-20 镇江市电站辅机厂有限公司 Circulating fluidized bed boiler fly ash recirculation device

Similar Documents

Publication Publication Date Title
CN101949535B (en) Low-ratio biomass circulating fluidized bed boiler and combustion method thereof
CN204693377U (en) High-moisture biomass fuel boiler
CN203571721U (en) Combustion heating system taking biomass as fuel
CN201463253U (en) Double-furnace horizontal type industrial pulverized coal fired boiler
CN101576245B (en) Chain-grate boiler for high-temperature combustion of biomass
CN102042585B (en) Reburning and discharging device of slag and soot of biomass direct-fired power generation boiler
CN201066195Y (en) Horizontal type reverse-combusting coal-firing boiler
CN200965260Y (en) High-temperature hot water boiler
CN201475988U (en) Fly ash recirculation device
CN201811194U (en) Horizontal coal gasification boiler
CN201212729Y (en) Biomass granular fuel boiler
CN104279548A (en) Energy-collecting heat exchange environment-friendly boiler
CN202392992U (en) Full-automatic horizontal-type hot air and hot water multipurpose boiler
CN201180981Y (en) Bidirectional combustion environment friendly energy-saving horizontal steam/water boiler
CN201652323U (en) Synchronous combustion chain furnace with function of full coal layer inflammation
CN201954528U (en) Secondary combustion and discharge device for slag and smoke dust of biomass direct combustion generating boiler
CN203336814U (en) Horizontal hot water boiler
CN103884009A (en) Biomass hot blast stove
CN201514032U (en) Normal-pressure hot-water boiler using biomass straw briquette fuel for combustion
CN204880674U (en) Living beings whirlwind gasification boiler
CN103471137A (en) Multiple-return-stroke reverse combustion heating boiler
CN203687352U (en) Energy-saving environment-friendly boiler barrel longitudinally-arranged inclined push reciprocating grate hot water boiler
CN102367989A (en) Smokeless environment-friendly boiler
CN202328763U (en) Full-automatic horizontal type hot air boiler
CN202328758U (en) Smokeless environment-friendly boiler

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100519

Termination date: 20110624