CN109539316A - A kind of low volatile moulded coal environment-friendly and energy-saving furnace - Google Patents

A kind of low volatile moulded coal environment-friendly and energy-saving furnace Download PDF

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Publication number
CN109539316A
CN109539316A CN201811367919.9A CN201811367919A CN109539316A CN 109539316 A CN109539316 A CN 109539316A CN 201811367919 A CN201811367919 A CN 201811367919A CN 109539316 A CN109539316 A CN 109539316A
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China
Prior art keywords
air
furnace wall
friendly
furnace
low volatile
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Granted
Application number
CN201811367919.9A
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Chinese (zh)
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CN109539316B (en
Inventor
王长安
袁茂博
王鹏乾
赵林
孙瑞金
杜勇博
车得福
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Xian Jiaotong University
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Xian Jiaotong University
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Priority to CN201811367919.9A priority Critical patent/CN109539316B/en
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Publication of CN109539316B publication Critical patent/CN109539316B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00Stoves or ranges
    • F24B1/02Closed stoves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00Heating of air supplied for combustion
    • F23L15/04Arrangements of recuperators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B13/00Details solely applicable to stoves or ranges burning solid fuels 
    • F24B13/002Surrounds
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B13/00Details solely applicable to stoves or ranges burning solid fuels 
    • F24B13/02Arrangement or mountings of fire-grate assemblies; Arrangement or mountings of linings for fire-boxes, e.g. fire-backs 
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

The invention discloses a kind of low volatile moulded coal environment-friendly and energy-saving furnaces, including vibrating-grate stoker, blower unit, preceding furnace wall, rear furnace wall, First air heater, back-end ductwork and heat-exchanging water tank etc..Effect of the invention is, improves positive burning furnace chamber structure, strengthens furnace gas disturbance, reduce soot emission, increase flue gas and lime-ash waste-heat recovery device, pre- heat primary air enhances the ability of low volatile fuel, promotes the clean and effective cascade utilization of coal;Chamber structure is novel in the present invention, compared to traditional positive burning stove, it can be improved furnace temperature, reinforce furnace gas disturbance, enhance Combustion of Mould Coal effect, moulded coal burn-off rate is improved, self-heating secondary air system and waste-heat recovery device is introduced, improves the efficiency of combustion of stove, using the vibrating-grate stoker of adjustable frequency and the air supply device of variable wind rate, the firepower regulating power of stove is improved, stove is adaptable to pluralities of fuel on the whole, has the characteristics that economical and practical.

Description

A kind of low volatile moulded coal environment-friendly and energy-saving furnace
Technical field
The invention belongs to coal briquette for civillan use combustion fields, and in particular to a kind of low volatile moulded coal environment-friendly and energy-saving furnace.
Background technique
Household coal burning is the main domestic energy of the northern area of China rural area and residents from villages and towns, especially in heating season It is the warm major way passed the winter of resident.However, due to the combustion system that domestic stove takes direct combustion in line, to atmospheric environment dirt Dye is serious, is one of the main cause for inducing haze weather.Stove can be substantially divided into according to combustion system and positive burn class stove, counter burn class Stove and decoupling burning stove.Reverse burning furnace and decoupling furnace, can mainly for the higher solid fuel of volatile matter content is used Effectively reduce black smoke and NOxDischarge.And the fuel effects such as anthracite lower for volatile matter, semicoke are not significant.For ruler Very little in Centimeter Level other coal cinder, combustion process is often in dynamic combustion area and transition region, improves in-furnace temperature and reinforces in furnace Gas disturbance can strengthen Combustion of Mould Coal effect significantly.It is positive to burn furnace often excessive internal heat speed with higher and intensity of fire, it can Higher in-furnace temperature is provided, promotes low volatilization moulded coal full combustion, but its chimney is often accompanied by a large amount of black smokes in use It emerges, flue gas pollutant concentration of emission is high, and exhaust gas temperature is higher, averagely reaches 300 DEG C, causes just to burn thermal efficiency of stoves It is low.With the fast development of China's coal chemical industry, there is the high-quality cleaning low volatile carbon such as a large amount of pyrolysis of coal semicoke at present Base fuel urgently efficiently utilizes, and therefore, improves positive burning furnace chamber structure, strengthens furnace gas disturbance, reduce soot emission, increase Flue gas and lime-ash waste-heat recovery device, have a very important significance, and to low volatile fuel, promote the cleaning of coal high Effect cascade utilization has impetus.
In conclusion a kind of efficient and environment-friendly type coal furnace for using low volatile fuels, it would be highly desirable to which development and utilization are in coal briquette for civillan use Field.
Summary of the invention
The purpose of the present invention is to provide a kind of low volatile moulded coal environment-friendly and energy-saving furnaces, for low volatile moulded coal in stove In be difficult to substantially stabilized burning, heat loss due to exhaust gas and the excessively high problem of deslagging heat loss, optimize the structure in the stove of existing stove, Increase First air preheater, self-heating Secondary Air and residual neat recovering system.
The present invention adopts the following technical scheme that realize:
A kind of low volatile moulded coal environment-friendly and energy-saving furnace, including the air compartment, burner hearth and hearth face being sequentially communicated from bottom to top, with And vertically upward with the flue being circumferentially connected in hearth face;Wherein,
Burner hearth is made of preceding furnace wall and rear furnace wall, and the outer one end close to preceding furnace wall of air compartment is provided with blower, close in air compartment The other end of furnace wall is provided with First air preheater afterwards, and air compartment bottom offers ash discharging hole, and wind is indoor to be sequentially arranged above Have several compartment, the top in each compartment offers air outlet, at each air outlet above be provided with vibration stove Row, to the entrance of First air preheater, the outlet of First air preheater is connected to each the outlet of blower by air supply tube Compartment;
Feed inlet is offered below preceding furnace wall, and stove shell is provided in the circumferential direction above preceding furnace wall and rear furnace wall, and There is hollow cavity, the front and back of stove shell offers the adjustable lower air port forehearth wall of several apertures between stove shell and burner hearth Uptake is offered in the circumferential direction above rear furnace wall;
Water tank is provided in the circumferential direction of flue, and the bottom of flue offers slag-drip opening.
A further improvement of the present invention lies in that being provided with rear fire door below rear furnace wall.
A further improvement of the present invention lies in that being provided with strainer in flue above slag-drip opening.
A further improvement of the present invention lies in that being provided in side wall circumferential direction between flue and water tank several through side wall Heat exchanger.
A further improvement of the present invention lies in that longitudinal screenshot profile of preceding furnace wall is parabolic type, the longitudinal direction of rear furnace wall is cut Map contour successively includes that lower section is inclination alpha straightway, and specially 10 ° -20 °, intermediate arc section smooth transition and upper section are another One straightway.
A further improvement of the present invention lies in that each vibrating-grate stoker is provided with inclination angle, vibrating-grate stoker can be adjusted in synchronism The air output of frequency and supply air system achievees the purpose that adjust stove firepower size.
A further improvement of the present invention lies in that the adjustable lower air port of aperture include opened up before and after stove shell it is several Round air holes, and can up and down adjustment aperture plate for adjust round air holes size.
The present invention has following beneficial technical effect:
A kind of low volatile moulded coal environment-friendly and energy-saving furnace provided by the invention, chamber structure is novel, compared to traditional positive burning furnace Tool can be improved furnace temperature, reinforces furnace gas disturbance, enhances Combustion of Mould Coal effect, improve moulded coal burn-off rate;In addition, drawing Enter First air preheater, self-heating secondary air system and flue gas waste heat recovery apparatus, improves the efficiency of combustion of stove, use First air preheater recycles lime-ash waste heat and flue gas heat-exchange unit Mist heat recovering, improves energy utilization efficiency;Using having The air supply device of the vibrating-grate stoker and variable wind rate of inclination angle and frequency, improves the firepower regulating power of stove, stove is on the whole It is adaptable to pluralities of fuel, have the characteristics that economical and practical;Back-end ductwork will generate suction force and draw flue gas in burner hearth, cigarette Heat exchanger is arranged in road tail portion, absorbs fume afterheat, heat-exchanging water tank is in flue tail, for absorbing fume afterheat.
Further, preceding furnace wall and rear furnace wall shape change chamber structure, open up adjustable opening air inlet hole, can pass through tune Whole two wall surfaces curvature and air inlet hole size reach and reinforce furnace air disturbance, improve the effect of combustion zone temperature.
Further, there are certain inclination angles for vibrating-grate stoker, can be adjusted in synchronism the air-supply of vibrating-grate stoker frequency and supply air system Amount achievees the purpose that adjusting stove firepower size specifically can make coal cinder bound forward, and control advanced speed, inclination angle energy Enough coal cinder is assisted to be fed forward, achievees the effect that change stove load.
Further, flue corner setting strainer and slag-drip opening, filter the biggish particulate matter of partial size in flue gas.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of low volatile moulded coal environment-friendly and energy-saving furnace of the present invention.
Fig. 2 is the structural schematic diagram in air port under adjustable air volume.
Fig. 3 is preceding protecting wall structure schematic diagram.
Fig. 4 is rear protecting wall structure schematic diagram.
Description of symbols: 1 is heat exchanger, and 2 be water tank, and 3 be flue, and 4 be strainer, and 5 be slag-drip opening, and 6 be uptake, 7 For rear furnace wall, 8 be burner hearth, and 9 be rear fire door, and 10 be ash discharging hole, and 11 be First air preheater, and 12 be air compartment, and 13 be air supply tube, 14 It is blower for compartment, 15,16 be vibrating-grate stoker, and 17 be feed inlet, and 18 be the adjustable lower air port of aperture, and 19 be preceding furnace wall, and 20 are Hearth face, 21 for can up and down adjustment aperture plate, 22 be several round air holes.
Specific embodiment
Below in conjunction with attached drawing, by specific embodiment, invention is further described in detail.
As shown in Figure 1, the present invention provides a kind of low volatile moulded coal environment-friendly and energy-saving furnace, including vibrating-grate stoker 16, air inducing dress It sets and (is made of air compartment 12, air supply tube 13, compartment 14 and blower 15), burner hearth 8 (including preceding furnace wall 19 and rear furnace wall 7), once Wind preheater 11, back-end ductwork (by flue 3, strainer 4 and slag-drip opening 5 are formed), water tank 2.
As shown in Fig. 2, the adjustable lower air port of aperture includes can up and down adjustment aperture plate 21 and round air holes 22.
As shown in figure 3, preceding furnace wall is parabolic type, design parameter size is by a1, h1Control.
As shown in figure 4, it is α straightway that rear furnace wall lower section, which is inclination angle, and specially 10 ° -20 °, intermediate arc section smooth transition, Upper section is another straightway.
It is specifically: being fed forward by the moulded coal that burner hearth 8 is added in feed inlet 17 by vibrating-grate stoker 16,16 leading portion of vibrating-grate stoker On moulded coal be rapidly heated kindling by the heat radiation of preceding furnace wall 19, moulded coal is stirred in 16 operational process of vibrating-grate stoker, is played The effect of poking fire, under 16 back segment of vibrating-grate stoker is acted in rear furnace wall 7, space compression, local temperature rises, flue gas disturbance aggravation, type The burn-off rate of coal is guaranteed, and after-flame slag charge falls into burner hearth rear end, primary using lime-ash waste-heat by First air preheater 11 Wind, ash discharging hole 10 is for clearing up lime-ash;The adjustable lower air port 18 of aperture is arranged on stove shell, and air is entered by lower air port 18 After the squeeze preheating of shell and furnace wall, is sucked in burner hearth 8 by the uptake 6 opened up on furnace wall, reach the flue gas meeting on 8 top of burner hearth Enter mixing from preheated air for burner hearth 8 with uptake 6, reinforces flue gas disturbance, promote unburned gas after-flame, it can be in certain journey Mitigate " over-emitting black exhaust " phenomenon on degree;Tail flue gas is filtered by the strainer 4 in back-end ductwork 3, is absorbed heat by heat exchanger 1 and water tank 2 It is discharged after fume afterheat, strainer 4 and slag-drip opening 5 need periodic cleaning to block flue 3 with accumulatingdust;Hearth face 20 and burner hearth 8 are spaced It opens, proper temperature is kept to carry out cooking operation.
Core of the invention thought is: Combustion of Mould Coal primarily for dynamic combustion area and transition region, improve ignition temperature and Gas flow rate is obvious to Combustion of Mould Coal effect promoting, and core of the invention seeks to introduce self-heating by improving chamber structure Secondary Air promotes fire box temperature and flue gas disturbance, guarantees that low volatile moulded coal stablizes full combustion.
Preferably, lime-ash waste heat, pre- heat primary air can be recycled by adjusting 11 arrangement form of First air preheater.
Preferably, gas liquid form and combustion zone temperature in burner hearth can be improved by adjusting preceding furnace wall and rear furnace wall shape Degree adjusts lower air port aperture and controls Secondary Air air quantity, so as to improve efficiency of combustion.
Stove firepower size can be controlled by adjusting vibrating-grate stoker frequency and air output, promote the operability of stove.
Preferably, preceding furnace wall is in fire grate front charging side, opens up row's ventilation hole above furnace wall;Main function is to absorb Radiant heat from flame and high-temperature flue gas, and be intensively radiated on fresh fuel, it is allowed to heating kindling, from shell bottom end Burner hearth is entered for fuel gas after-flame by ventilation hole after the air preheat of entrance.
Preferably, rear furnace wall is in back of furnace row, row's ventilation hole is opened up above furnace wall, main function is will be strong on fire grate The high-temperature flue gas of strong combustion zone is transported to preceding furnace wall, strengthens the ignition action of preceding furnace wall, the reverse flow of high-temperature flue gas is to burner hearth Middle atmosphere can play disturbance, and entering burner hearth by ventilation hole after the air preheat that shell bottom end enters makes fuel gas after-flame Obtain fuel gas full combustion.

Claims (7)

1. a kind of low volatile moulded coal environment-friendly and energy-saving furnace, which is characterized in that including air compartment (12), the furnace being sequentially communicated from bottom to top Thorax (8) and hearth face (20), and vertically upward with the flue (3) being circumferentially connected to of hearth face (20);Wherein,
Burner hearth (8) is made of preceding furnace wall (19) and rear furnace wall (7), and the one end of air compartment (12) outside close to preceding furnace wall (19) is provided with wind Machine (15), the other end in air compartment (12) close to rear furnace wall (7) is provided with First air preheater (11), and air compartment (12) bottom is opened Equipped with ash discharging hole (10), being sequentially arranged above several compartment (14) in air compartment (12) is upper on each compartment (14) Side offers air outlet, at each air outlet above be provided with vibrating-grate stoker (16), the outlet of blower (15) to one The outlet of the entrance of secondary wind preheater (11), First air preheater (11) is connected to each compartment by air supply tube (13) (14);
It offers feed inlet (17) below preceding furnace wall (19), is provided in the circumferential direction above preceding furnace wall (19) and rear furnace wall (7) Stove shell, and there is hollow cavity between stove shell and burner hearth (8), the front and back of stove shell offers several apertures can It adjusts and offers uptake (6) in the circumferential direction above lower air port (18) preceding furnace wall (19) and rear furnace wall (7);
It is provided in the circumferential direction of flue (3) water tank (2), and the bottom of flue (3) offers slag-drip opening (5).
2. a kind of low volatile moulded coal environment-friendly and energy-saving furnace according to claim 1, which is characterized in that under rear furnace wall (7) Side is provided with rear fire door (9).
3. a kind of low volatile moulded coal environment-friendly and energy-saving furnace according to claim 1, which is characterized in that above slag-drip opening (5) Flue (3) in be provided with strainer (4).
4. a kind of low volatile moulded coal environment-friendly and energy-saving furnace according to claim 1, which is characterized in that flue (3) and water tank (2) several heat exchangers (1) through side wall are provided in the side wall circumferential direction between.
5. a kind of low volatile moulded coal environment-friendly and energy-saving furnace according to claim 1, which is characterized in that preceding furnace wall (19) is indulged It is parabolic type to screenshot profile, longitudinal screenshot profile of rear furnace wall (7) successively includes that lower section is inclination alpha straightway, specially 10 ° -20 °, intermediate arc section smooth transition and upper section are another straightway.
6. a kind of low volatile moulded coal environment-friendly and energy-saving furnace according to claim 1, which is characterized in that each vibrating-grate stoker (16) it is provided with inclination angle, the air output of vibrating-grate stoker frequency and supply air system can be adjusted in synchronism, reaches and adjusts stove firepower The purpose of size.
7. a kind of low volatile moulded coal environment-friendly and energy-saving furnace according to claim 1, which is characterized in that aperture is adjustable lower air port It (18) include several round air holes (22) opened up before and after stove shell, and for adjusting round air holes (22) size Can up and down adjustment aperture plate (21).
CN201811367919.9A 2018-11-16 2018-11-16 Low-volatile-component coal-fired environment-friendly energy-saving furnace Active CN109539316B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113251443A (en) * 2021-06-18 2021-08-13 李建军 Low-order clean bituminous coal burning civil stove

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2272527Y (en) * 1996-04-15 1998-01-14 刘雪华 Multi-fuction uniformly layered combustion device
KR20050020624A (en) * 2003-08-22 2005-03-04 피시아 밥콕 엔비론멘트 게엠베하 Process for NOx-reduction in combustion chamber and device for carrying out said process
CN1916491A (en) * 2006-08-10 2007-02-21 上海锅炉厂有限公司 Method for cooling bottom dregs at fluid bed boiler
CN201269534Y (en) * 2008-08-01 2009-07-08 国电龙源电力技术工程有限责任公司 Apparatus used for burning biomass stalk
CN201983253U (en) * 2011-01-04 2011-09-21 华北电力大学 Biomass direct-fired boiler
CN106016714A (en) * 2016-06-28 2016-10-12 哈尔滨市金京锅炉有限公司 Household boiler rapidly heating water tank
WO2017014299A1 (en) * 2015-07-22 2017-01-26 藤崎電機株式会社 Biomass power generation system using bamboo as main fuel, and method for combusting bamboo in said biomass power generation system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2272527Y (en) * 1996-04-15 1998-01-14 刘雪华 Multi-fuction uniformly layered combustion device
KR20050020624A (en) * 2003-08-22 2005-03-04 피시아 밥콕 엔비론멘트 게엠베하 Process for NOx-reduction in combustion chamber and device for carrying out said process
CN1916491A (en) * 2006-08-10 2007-02-21 上海锅炉厂有限公司 Method for cooling bottom dregs at fluid bed boiler
CN201269534Y (en) * 2008-08-01 2009-07-08 国电龙源电力技术工程有限责任公司 Apparatus used for burning biomass stalk
CN201983253U (en) * 2011-01-04 2011-09-21 华北电力大学 Biomass direct-fired boiler
WO2017014299A1 (en) * 2015-07-22 2017-01-26 藤崎電機株式会社 Biomass power generation system using bamboo as main fuel, and method for combusting bamboo in said biomass power generation system
CN106016714A (en) * 2016-06-28 2016-10-12 哈尔滨市金京锅炉有限公司 Household boiler rapidly heating water tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113251443A (en) * 2021-06-18 2021-08-13 李建军 Low-order clean bituminous coal burning civil stove

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