CN104848262A - Return air furnace capable of recycling waste heat - Google Patents

Return air furnace capable of recycling waste heat Download PDF

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Publication number
CN104848262A
CN104848262A CN201510275235.6A CN201510275235A CN104848262A CN 104848262 A CN104848262 A CN 104848262A CN 201510275235 A CN201510275235 A CN 201510275235A CN 104848262 A CN104848262 A CN 104848262A
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CN
China
Prior art keywords
water
furnace
heat
heater
slag
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.)
Pending
Application number
CN201510275235.6A
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Chinese (zh)
Inventor
不公告发明人
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Permanent Electronic Science And Technology Co Ltd Of Suzhou Welfare
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Permanent Electronic Science And Technology Co Ltd Of Suzhou Welfare
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 Permanent Electronic Science And Technology Co Ltd Of Suzhou Welfare filed Critical Permanent Electronic Science And Technology Co Ltd Of Suzhou Welfare
Priority to CN201510275235.6A priority Critical patent/CN104848262A/en
Publication of CN104848262A publication Critical patent/CN104848262A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a return air furnace capable of recycling waste heat. The return air furnace comprises a furnace shell, a smoke pipe and a slag-water heat exchanger, a furnace body is arranged in the furnace shell, a furnace hearth and a furnace ash chamber are arranged in the furnace body, the furnace ash chamber is provided with an ash box which is filled with water, the slag-water heat exchanger is arranged in the water in the ash box and disposed in a heat-storage water tank outside through a pipeline to form a closed circulating pipeline, a valve and a water pump are arranged on the pipeline, the heat-storage water tank is connected with a controller controlling water temperature inside the heat-storage water tank, the furnace hearth is provided with a filling port, the furnace ash chamber is provided with a furnace ash port, and a furnace grate is arranged between the furnace hearth and the furnace ash chamber. Heat in the ash box is exchanged out through the slag-water heat exchanger and recycled to heat the water in the heat-storage water tank, and the water in the heat-storage water tank can be used for bathing and heating of staff in a boiler room, so that utilization of energy resources in an economical manner is realized.

Description

A kind of air return stove carrying out waste heat recovery
Technical field
The present invention relates to boiler plant technical field, specifically a kind of air return stove carrying out waste heat recovery.
Background technology
Current boiler, after lighting a fire, stove and accessory environment temperature raises from lower to upper, the heat that fuel produces, and the tail gas that a part is produced by burning is discharged through exhaust outlet.Exhaust outlet is generally arranged on the top of shaft, and this heat just making fuel produce can not be utilized more fully.And in fuel combustion process, the temperature increase of shaft and boiler face is comparatively large, and the temperature increase of whole stove seat not obvious.In addition; it is danger close that slag in boiler after coal burning discharges at relatively high temperatures; usual way be slag is placed in special except after carrying out cooling down in the water of slag chute; again slag is circulated by scraper plate and taken away; like this except the water in slag chute can keep 70 degrees centigrade usually, but this part heat removed in slag chute of current existing boiler room is not all recycled substantially; but directly evaporate in atmosphere, define very large energy waste.
Summary of the invention
The object of the present invention is to provide a kind of air return stove carrying out waste heat recovery, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of air return stove carrying out waste heat recovery, comprise furnace shell, smoke pipe and slag-water heat exchanger, body of heater is provided with in described furnace shell, burner hearth and ashes room is provided with in body of heater, ashes room is provided with ash bin, ash bin inside is marked with water, slag-water heat exchanger is arranged in the water in ash bin, slag-water heat exchanger by pipeline be placed in outside heat storage water tank and form a closed circulation line, pipeline is provided with valve and water pump, described heat storage water tank is also connected with the controller controlling its water temperature inside, described burner hearth is provided with feeding port, ashes room is provided with ashes mouth, fire grate is provided with between burner hearth and ashes room, cavity is provided with between described furnace shell and body of heater, furnace shell top be provided with bell and bell higher than body of heater, the surrounding of body of heater is provided with hot-water line, the top of body of heater is provided with delivery port, bottom is provided with water inlet, described furnace shell is provided with smoke pipe, smoke pipe is connected with cavity.
As the further scheme of the present invention: the inwall of described burner hearth is provided with fire-resistant soil layer, between fire-resistant soil layer and burner hearth, secondary wind inleting tube is set, is connected with ashes room bottom secondary wind inleting tube.
As the further scheme of the present invention: the inwall of described fire-resistant soil layer is provided with pipe with spiral pipe, and pipe with spiral pipe is connected with hot-water line.
Compared with prior art, structure of the present invention is simple, rationally, easy to use, adopt and cavity is set between furnace shell and body of heater, and at body of heater outer setting hot-water line, burner hearth heating pipe can be made like this, the flue gas produced upwards flows and to be flowed out by smoke pipe through cavity, post bake can be carried out to hot-water line at flue gas simultaneously, and be also provided with pipe with spiral pipe in burner hearth, the heat of burner hearth and fume afterheat are effectively utilized, improve heat utilization efficiency, in addition, between burner hearth and fire-resistant soil layer, secondary wind inleting tube is set, secondary wind inleting tube is when coal burns, carry out secondary air feed, improve burning of coal efficiency, burn vigorous, firepower is pure, the thermal efficiency is high, the present invention by slag-water heat exchanger by the exchange heat in ash bin out, and then this part heat recovery is got up for heating the water in heat storage water tank, water in heat storage water tank can be used for employee's bathing, heating etc. in boiler room, thus the saving achieving the energy utilizes.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is internal structure schematic diagram of the present invention.
In figure: 1-furnace shell, 2-smoke pipe, 3-body of heater, 4-burner hearth, 5-ashes room, 6-cavity, 7-bell, 8-feeding port, 9-ashes mouth, 10-fire grate, 11-hot-water line, 12-delivery port, 13-water inlet, the fire-resistant soil layer of 14-, 15-secondary wind inleting tube, 16-pipe with spiral pipe, 17-ash bin, 18-valve, 19-water pump, 20-heat storage water tank, 21-slag-water heat exchanger, 22-pipeline.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 ~ 2, in the embodiment of the present invention, a kind of air return stove carrying out waste heat recovery, comprise furnace shell 1, smoke pipe 2 and slag-water heat exchanger 21, body of heater 3 is provided with in described furnace shell 1, burner hearth 4 and ashes room 5 is provided with in body of heater 3, ashes room 5 is provided with ash bin 17, ash bin 17 inside is marked with water, slag-water heat exchanger 21 is arranged in the water in ash bin 17, slag-water heat exchanger 21 is for by the exchange heat of water in ash bin 17 out, slag-water heat exchanger 21 by pipeline 22 be placed in outside heat storage water tank 20 and form a closed circulation line, the water of its internal reservoir heats by the heat exchanged for slag-water heat exchanger 21, pipeline is provided with valve 18 and water pump 19, described heat storage water tank 20 is also connected with the controller controlling its water temperature inside, by slag-water heat exchanger 21 by the exchange heat in ash bin out, and then this part heat recovery is got up for heating the water in heat storage water tank 20, water in heat storage water tank 20 can be used for employee's bathing in boiler room, heating etc., thus the saving achieving the energy utilizes, described burner hearth 4 is provided with feeding port 8, the inwall of burner hearth 4 is provided with fire-resistant soil layer 14, between fire-resistant soil layer 14 and burner hearth 4, secondary wind inleting tube 15 is set, be connected with ashes room 5 bottom secondary wind inleting tube 15, the inwall of fire-resistant soil layer 14 is provided with pipe with spiral pipe 16, pipe with spiral pipe 16 is connected with hot-water line, ashes room 5 is provided with ashes mouth 9, fire grate 10 is provided with between burner hearth 4 and ashes room 5, cavity 6 is provided with between described furnace shell 1 and body of heater 3, furnace shell 1 top be provided with bell 7 and bell 7 higher than body of heater 3, the surrounding of body of heater 3 is provided with hot-water line 11, the top of body of heater 3 is provided with delivery port 12, bottom is provided with water inlet 13, described furnace shell 1 is provided with smoke pipe 2, smoke pipe 2 is connected with cavity 6, adopt and cavity 6 is set between furnace shell 1 and body of heater 3, and at body of heater 3 outer setting hot-water line 11, burner hearth 4 heating pipe can be made like this, the flue gas produced upwards flows and to be flowed out by smoke pipe 2 through cavity, post bake can be carried out to hot-water line 11 at flue gas simultaneously, and be also provided with pipe with spiral pipe 16 in burner hearth 4, the heat of burner hearth 4 and fume afterheat are effectively utilized, improve heat utilization efficiency, in addition, secondary wind inleting tube 15 is set between burner hearth 4 and fire-resistant soil layer 14, secondary wind inleting tube 15 is when coal burns, carry out secondary air feed, improve burning of coal efficiency, burn vigorous, firepower is pure, the thermal efficiency is high.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.

Claims (3)

1. one kind can be carried out the air return stove of waste heat recovery, comprise furnace shell, smoke pipe and slag-water heat exchanger, it is characterized in that, body of heater is provided with in described furnace shell, burner hearth and ashes room is provided with in body of heater, ashes room is provided with ash bin, ash bin inside is marked with water, slag-water heat exchanger is arranged in the water in ash bin, slag-water heat exchanger by pipeline be placed in outside heat storage water tank and form a closed circulation line, pipeline is provided with valve and water pump, described heat storage water tank is also connected with the controller controlling its water temperature inside, described burner hearth is provided with feeding port, ashes room is provided with ashes mouth, fire grate is provided with between burner hearth and ashes room, cavity is provided with between described furnace shell and body of heater, furnace shell top be provided with bell and bell higher than body of heater, the surrounding of body of heater is provided with hot-water line, the top of body of heater is provided with delivery port, bottom is provided with water inlet, described furnace shell is provided with smoke pipe, smoke pipe is connected with cavity.
2. a kind of air return stove carrying out waste heat recovery according to claim 1, is characterized in that, the inwall of described burner hearth is provided with fire-resistant soil layer, arranges secondary wind inleting tube between fire-resistant soil layer and burner hearth, is connected bottom secondary wind inleting tube with ashes room.
3. a kind of air return stove carrying out waste heat recovery according to claim 1, is characterized in that, the inwall of described fire-resistant soil layer is provided with pipe with spiral pipe, and pipe with spiral pipe is connected with hot-water line.
CN201510275235.6A 2015-05-26 2015-05-26 Return air furnace capable of recycling waste heat Pending CN104848262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510275235.6A CN104848262A (en) 2015-05-26 2015-05-26 Return air furnace capable of recycling waste heat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510275235.6A CN104848262A (en) 2015-05-26 2015-05-26 Return air furnace capable of recycling waste heat

Publications (1)

Publication Number Publication Date
CN104848262A true CN104848262A (en) 2015-08-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510275235.6A Pending CN104848262A (en) 2015-05-26 2015-05-26 Return air furnace capable of recycling waste heat

Country Status (1)

Country Link
CN (1) CN104848262A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025043A (en) * 1974-08-05 1977-05-24 Ridgway Steel Fabricators, Inc. Fireplace heating system
CN201090948Y (en) * 2007-04-06 2008-07-23 马成虎 Multi circulating domestic heating stove
CN103968398A (en) * 2014-05-14 2014-08-06 金洪文 Waste heat recovery device for deslagging trough of boiler
CN204100300U (en) * 2014-08-04 2015-01-14 徐立新 Energy-saving and efficient return air furnace
CN204757012U (en) * 2015-05-26 2015-11-11 苏州福利恒电子科技有限公司 Waste heat recovery's return air stove can carry out

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025043A (en) * 1974-08-05 1977-05-24 Ridgway Steel Fabricators, Inc. Fireplace heating system
CN201090948Y (en) * 2007-04-06 2008-07-23 马成虎 Multi circulating domestic heating stove
CN103968398A (en) * 2014-05-14 2014-08-06 金洪文 Waste heat recovery device for deslagging trough of boiler
CN204100300U (en) * 2014-08-04 2015-01-14 徐立新 Energy-saving and efficient return air furnace
CN204757012U (en) * 2015-05-26 2015-11-11 苏州福利恒电子科技有限公司 Waste heat recovery's return air stove can carry out

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Application publication date: 20150819