CN203671589U - Heat accumulating typecombustion system - Google Patents

Heat accumulating typecombustion system Download PDF

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Publication number
CN203671589U
CN203671589U CN201420014932.7U CN201420014932U CN203671589U CN 203671589 U CN203671589 U CN 203671589U CN 201420014932 U CN201420014932 U CN 201420014932U CN 203671589 U CN203671589 U CN 203671589U
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China
Prior art keywords
fuel
heat accumulating
heat
regenerator
air
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Expired - Fee Related
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CN201420014932.7U
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Chinese (zh)
Inventor
刘维
刘方侃
杨诚笑
楚红伟
曾铁平
何华
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Changsha Hengwei Heat Energy Science & Technology Co Ltd
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Changsha Hengwei Heat Energy Science & Technology Co Ltd
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Priority to CN201420014932.7U priority Critical patent/CN203671589U/en
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Abstract

The utility model discloses a heat accumulating typecombustion system. The heat accumulating typecombustion system comprises at least two heat accumulating typecombustors mounted on a kiln, an air supply system, a fuel supply system, a smoke discharge system, an ever-burning fire system and a reversing system, wherein each heat accumulating type combustor comprises a heat accumulating chamber comprising an upper heat accumulating chamber body and a lower heat accumulating chamber body; a front buffer chamber and a back buffer chamber are arranged before and behind each heat accumulating chamber and separated by each upper heat accumulating chamber body and each lower heat accumulating chamber body; the back buffer chambers are connected with the air supply system and the smoke discharge system respectively; a fuel cavity is arranged between each upper heat accumulating chamber body and each lower heat accumulating chamber body, connected with the fuel supply system and communicated with a combustion chamber of the kiln; an air distribution plate is arranged between the front buffer chambers and the combustion chamber of the kiln, and ever-burning fire burner holes, fuel spray nozzle holes and air distribution holes are formed in the air distribution plate. The system is long in service life, stable in working, high in heat efficiency and significant in energy conservation and emission reduction effect.

Description

A kind of regenerative combustion system
Technical field
The present invention relates to a kind of regenerative combustion system.
Background technology
Along with the development of China's economy, resource and Pressure on Energy are increasing, and economic transition and industry restructuring are more and more urgent.For industrial technology, walk resource-conserving, environmentally friendly Sustainable Development Road is our inevitable choice.In China, industrial furnace is energy consumption rich and influential family, and generally lower (20% left and right) of energy utilization rate, and average unit consumption of product exceeds 40% left and right than developed country; In addition, industrial furnace exhaust gas temperature is generally higher, and fume afterheat is not well utilized; Meanwhile, the energy-saving and emission-reduction potentiality of industrial furnace are also very huge.
The energy-saving and emission-reduction approach of industrial furnace mainly comprises following several respects:
1), improve the efficiency of combustion of burner, ensure the abundant burning of fuel, release heat to greatest extent;
2), improve the structure of industrial furnace, heat transfer process in strengthening stove, improves the thermal efficiency of industrial furnace;
3), the high-temperature flue gas indirect preheating combustion air that utilizes industrial furnace directly to discharge, reduce the final exhaust gas temperature of industrial furnace, reduce flue gas and take away the thermal waste that heat causes, improve the thermal efficiency of industrial furnace;
4), improve the automatic control level of industrial furnace, the perfect adaptation that realizes burner and stove working system with accurately control, reduce unnecessary thermal energy consumption, the thermal efficiency of raising industrial furnace.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide a kind of regenerative combustion system, this combustion system has long service life, working stability, the thermal efficiency is high, effects of energy saving and emission reduction is remarkable, automaticity high, is to realize the effective approach of one that Energy-saving in Industrial Furnaces reduces discharging.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of regenerative combustion system, comprise at least two heat-storage type burners that are contained on kiln, the air feed system, fuel system, smoke evacuation system, the ever-burning flame system that are connected with described heat-storage type burner respectively, and for switching the exchange system of heat-storage type burner to fired state or smoke evacuation state; Its design feature is that each described heat-storage type burner comprises regenerator, is provided with upper and lower two heat storage laydown areas in regenerator; In described heat-storage type burner, be furnished with the front combustion air or flue gas surge chamber and rear combustion air or the flue gas surge chamber that are positioned at regenerator, between described front combustion air or flue gas surge chamber and rear combustion air or flue gas surge chamber, separate by upper and lower two heat storage laydown areas; Described rear combustion air or flue gas surge chamber are connected with smoke evacuation system with described air feed system respectively by combustion air entrance or exhanst gas outlet; Between described upper and lower two heat storage laydown areas, be provided with fuel cavity, this fuel cavity is connected with described fuel system by main fuel pipe; Described fuel cavity is communicated with the burner hearth of described kiln by multiple fuel nozzles; Between described front combustion air or flue gas surge chamber and the burner hearth of described kiln, be provided with porous air distribution plate, on this porous air distribution plate, have ever-burning flame burner, multiple fuel nozzles hole and multiple wind distributing hole.
Thus, the present invention, by the setting of front combustion air or flue gas surge chamber and rear combustion air or flue gas surge chamber, makes the combustion efficiency of burner better, and the thermal efficiency of whole regenerative combustion system is higher.
Be below the technical scheme of further improvement of the present invention:
For air distribution more equably, tissue burning, described wind distributing hole is wind distributing hole with angle, this wind distributing hole inclination angle is with respect to the horizontal plane 0 ~ 60 °.
In order to prevent that air feed system and smoke evacuation system from adopting four-way change-over valve easily to produce and collaborate, and the problem that causes combustion system to work, described exchange system comprises the three-way diverter valve that is arranged on three-way diverter valve and smoke evacuation system on air feed system, two three-way diverter valve interlocks, thus, can avoid air feed system and smoke evacuation system to collaborate, improve the stability of combustion system.
In order to facilitate supply flow and the pressure of fuel metering, described fuel system is provided with stop valve.
Preferably, described regenerator adopts refractory material global formation, between this regenerator and fuel nozzle, is filled with ceramic fibre; Described fuel nozzle is reducing pipe, increaser or la farr pipe.
For for convenience detach, safeguard detachable regenerator baffle plate be housed in described regenerator.
Than existing single storage heater bulky (even exceeding 10 ㎡), the volume of single heat-storage type burner of the present invention is 0.5 ㎡ ~ 1 ㎡, has greatly reduced the floor space of system.
Further, the present invention also comprises combustion air flow pressure regulation device, fuel flow rate pressure controlling device, exhaust gas temperature regulation device and kiln working system control system.
By said structure, regenerative combustion system of the present invention comprises heat-storage type burner, air feed system, fuel system, exchange system, smoke evacuation system and ever-burning flame system and control system, it is characterized in that: the heat-storage type burner of described regenerative combustion system is arranged in pairs, the alternate wheel of realizing between burning and accumulation of heat by exchange system changes jobs, and heat-storage type burner is realized igniting by ever-burning flame system; Two burners arranged in pairs share a set of air feed system, fuel system and smoke evacuation system, and system realizes combustion air, flue gas and Fuel switching commutation by exchange system and stop valve; Whole regenerative combustion system can, according to the working system of target stove, by intelligence programming, be realized automatically and controlling; The exhaust gas temperature of regenerative combustion system is controlled at below 200 DEG C, takes full advantage of fume afterheat.
Described heat-storage type burner arranges in pairs, alternate wheel change jobs state, i.e. burning and accumulation of heat;
Regenerator adopts refractory material entirety moldings formed therefrom or builds moulding by laying bricks or stones, is divided into upper and lower two regenerator, wherein can filled honeycomb body or the heat storage material such as Ceramic Balls;
Fuel nozzle is in a row arranged between two regenerator, can arrange concrete nozzle quantity and size according to different quantity combusteds, between fuel nozzle and regenerator, fills pyroceram fibre;
Described fuel nozzle can be reducing pipe, increaser or la farr pipe, and can, according to the working condition requirement of target stove, design certain inclination angle;
Exchange system can be made up of two high temperature resistant three reversal valves, is arranged on air feed system and smoke evacuation system, and interlock commutation, or adopt a high temperature resistant four-way change-over valve to realize the commutation of air feed system and smoke evacuation system;
Air feed system is sent combustion air into heat-storage type burner by exchange system by flow, pressure after regulating, and flow, the pressure-regulating device selected can be realized automatic control function;
On smoke evacuation system, be connected with heat-storage type burner by exchange system, smoke evacuation system is furnished with exhaust gas temperature monitoring point, in order to monitor exhaust gas temperature, when exhaust gas temperature is during higher than default exhaust gas temperature, system automatically, adjustment commutating period, make exhaust gas temperature arrive system requirements;
Fuel system is sent into respectively two regenerator burners arranged in pairs by stop valve after inflow-rate of water turbine and pressure adjusting, realizes the distribution of fuel by the stop valve on pipeline;
Ever-burning flame system comprises two ever-burning flame burners, be arranged on two heat-storage type burners, for lighting a fire to heat-storage type burner, the fuel of ever-burning flame system and combustion air supply are carried by special pipeline, and be furnished with special electric ignition rifle and flame detector system, the normal operation of ever-burning flame system is the prerequisite of the normal work of regenerative combustion system;
The pressure stabilizing chamber of certain length is all left in regenerator leading portion and rear end, for giving combustion air and flue gas voltage stabilizing, makes combustion air and flue gas to pass through uniformly regenerator, well realizes accumulation of heat and heat exchange;
Regenerator rear end cap adopts flange to connect, and dismantled and assembled, heat storage packs regenerator into by opening regenerator rear end cap, conveniently installs and cleans, safeguards;
The leading portion of regenerator, combustion air, after heat storage preheating, after combustion air or the voltage stabilizing of flue gas surge chamber, adopts and has the perforated baffle air distribution at inclination angle, highly organized flame forms, pitch angle control is between 0-60 °, and far away apart from fuel nozzle, and inclination angle is larger;
Whole regenerative combustion system adopts automatic control mode, can be set as fixing commutating period commutating period, and can be detected and be carried out adjustment by flue-gas temperature, and be 15-60 s commutating period; Also can not be set as fixed value commutating period, be undertaken automatically adjusting by exhaust gas temperature in good time; The exhaust gas temperature of regenerative combustion system is controlled at below 200 DEG C;
Described regenerative combustion system control system comprises that combustion air flow, pressure controlling device, fuel flow rate, pressure controlling device, exhaust gas temperature regulation device and Target Furnace furnaceman make system control system.
Compared with prior art, the invention has the beneficial effects as follows:
Regenerative combustion system involved in the present invention designs taking above-mentioned Energy Saving for Industrial Furnace reduction of discharging direction as starting point, effectively raise burner efficiency of combustion, optimized stove heat transfer boundary condition, lowered the exhaust gas temperature of stove, realize the good combination of burner and stove working system, can be by intelligence programming, realize the automatic control of technique.
The present invention effectively raise burner efficiency of combustion, optimized stove heat transfer boundary condition, lowered the exhaust gas temperature of stove, realize the good combination of burner and stove working system, can be by intelligence programming, realize the automatic control of technique, on industrial furnace, use this regenerative combustion system, can improve the energy utilization rate of stove, realize the energy-saving and emission-reduction of industrial furnace.
In a word, regenerative combustion system of the present invention has long service life, working stability, the thermal efficiency is high, effects of energy saving and emission reduction is remarkable, automaticity high, can be used on all kinds of reverberatory furnaces such as market pot, glass kiln, molten aluminium stove and pot and stove, be applicable to all kinds of horse shoe flames and to the cross flame type of furnace.
Below in conjunction with drawings and Examples, the present invention is further elaborated.
Brief description of the drawings
Fig. 1 is the structure principle chart of one embodiment of the invention;
Fig. 2 is the structural representation of burner of the present invention;
Fig. 3 is the structural representation of air distribution plate of the present invention;
Fig. 4 is the structural representation of regenerator baffle plate of the present invention.
Detailed description of the invention
A kind of regenerative combustion system, as shown in Figure 1, comprise: air feed system 1, smoke evacuation system 2, fuel system 3, ever-burning flame system 4, heat-storage type burner 5, exchange system 6 and target stove 7, wherein on air feed system 1, be furnished with flow, pressure-regulating device, on smoke evacuation system 2, be furnished with flue-gas temperature monitoring device, fuel system 3 is furnished with stop valve on corresponding heat-storage type burner pipeline, controls the supply of fuel.
Heat-storage type burner profile as shown in Figure 2, comprise: main fuel pipeline 8, combustion air entrance or exhanst gas outlet 9, regenerator 10, heat storage 11, fuel nozzle 12, front porous air distribution plate 13, front combustion air or flue gas surge chamber 14, rear combustion air or flue gas surge chamber 15, end plate 16, heat storage layering is deposited in regenerator 10; Wherein front porous air distribution plate 13 concrete structures are referring to Fig. 3, comprise ever-burning flame burner 17 and can wind distributing hole 18 with angle; End plate 16 concrete structures, referring to Fig. 4, mainly comprise detachable regenerator baffle plate 19, can carry out the installation and removal of heat storage by opening detachable regenerator baffle plate 19, convenient cleaning and maintenance.
Burning and the smoke evacuation state in the regenerative combustion system course of work, realized between a pair of regenerator burner 5 by exchange system 6 switch, and fuel system 3 is also realized the interlock commutation of fuel system by the switching of the stop valve on corresponding heat-storage type burner simultaneously.In the regenerative combustion system course of work, can adopt and control in two ways commutating period, first kind of way is: the commutating period that default is fixing, adjust commutating period using exhaust gas temperature as auxiliary signal simultaneously; The second way is: system is not set commutating period, and concrete commutating period is only relevant to exhaust gas temperature, regulates in real time commutating period according to controlling exhaust gas temperature.Generally default can meet exhaust gas temperature restriction fixing commutating period, and be 15-60 s general commutating period, and exhaust gas temperature is controlled at below 200 DEG C.The ever-burning flame system 4 of regenerative combustion system is responsible for lighting a fire to heat-storage type burner 5, ever-burning flame system is provided with special air feed system and fuel system, be furnished with special igniter and flame detecting device, the prerequisite that the normal operation of ever-burning flame system is the normal operation of whole regenerative combustion system.In addition, flow, pressure-regulating device on air feed system 1 and fuel system 3 all can be realized automatic control, and therefore, for the working system of target stove, whole regenerative combustion system can be realized automatic control function.
A kind of regenerative combustion system of the present invention can be used for, on all kinds of reverberatory furnaces such as market pot, glass kiln, molten aluminium stove and pot and stove, being applicable to all kinds of horse shoe flame type flame and to the cross flame type of furnace, having good effects of energy saving and emission reduction.
The content that above-described embodiment is illustrated should be understood to these embodiment only for being illustrated more clearly in the present invention, limit the scope of the invention and be not used in, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present invention.

Claims (8)

1. a regenerative combustion system, comprise at least two heat-storage type burners (5) that are contained on kiln (7), the air feed system (1), fuel system (3), smoke evacuation system (2), the ever-burning flame system (4) that are connected with described heat-storage type burner (5) respectively, and for switching the exchange system (6) of heat-storage type burner (5) to fired state or smoke evacuation state; It is characterized in that, each described heat-storage type burner (5) comprises regenerator (10), is provided with upper and lower two heat storages (11) laydown area in regenerator (10); In described heat-storage type burner (5), be furnished with the front combustion air or flue gas surge chamber (14) and rear combustion air or the flue gas surge chamber (15) that are positioned at regenerator (10), between described front combustion air or flue gas surge chamber (14) and rear combustion air or flue gas surge chamber (15), separate by upper and lower two heat storages (11) laydown area; Described rear combustion air or flue gas surge chamber (15) are connected with smoke evacuation system (2) with described air feed system (1) respectively by combustion air entrance or exhanst gas outlet (9); Between described upper and lower two heat storages (11) laydown area, be provided with fuel cavity, this fuel cavity is connected with described fuel system (3) by main fuel pipe (8); Described fuel cavity is communicated with the burner hearth of described kiln (7) by multiple fuel nozzles (12); Between described front combustion air or flue gas surge chamber (14) and the burner hearth of described kiln (7), be provided with porous air distribution plate (13), on this porous air distribution plate (13), have ever-burning flame burner (17), multiple fuel nozzles hole and multiple wind distributing hole (18).
2. regenerative combustion system according to claim 1, is characterized in that, described wind distributing hole (18) is wind distributing hole with angle, and this wind distributing hole (18) inclination angle is with respect to the horizontal plane 0 ~ 60 °.
3. regenerative combustion system according to claim 1, is characterized in that, described exchange system comprises the three-way diverter valve that is arranged on the upper three-way diverter valve of air feed system (1) and smoke evacuation system (2), two three-way diverter valve interlocks.
4. regenerative combustion system according to claim 1, is characterized in that, described fuel system (3) is provided with stop valve.
5. regenerative combustion system according to claim 1, is characterized in that, described regenerator adopts refractory material global formation, between this regenerator and fuel nozzle, is filled with ceramic fibre; Described fuel nozzle is reducing pipe, increaser or la farr pipe.
6. regenerative combustion system according to claim 1, is characterized in that, detachable regenerator baffle plate (19) is housed in described regenerator (10).
7. regenerative combustion system according to claim 1, is characterized in that, the volume of single heat-storage type burner (5) is 0.5 ㎡ ~ 1 ㎡.
8. regenerative combustion system according to claim 1, is characterized in that, also comprises combustion air flow pressure regulation device, fuel flow rate pressure controlling device, exhaust gas temperature regulation device and kiln working system control system.
CN201420014932.7U 2014-01-10 2014-01-10 Heat accumulating typecombustion system Expired - Fee Related CN203671589U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759254A (en) * 2014-01-10 2014-04-30 长沙恒威热能科技有限公司 Regenerative combusting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759254A (en) * 2014-01-10 2014-04-30 长沙恒威热能科技有限公司 Regenerative combusting system
CN103759254B (en) * 2014-01-10 2016-08-24 长沙恒威热能科技有限公司 A kind of regenerative combustion system

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20140625

Termination date: 20210110