CN106399612A - Preheating energy saving system and preheating method - Google Patents
Preheating energy saving system and preheating method Download PDFInfo
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- CN106399612A CN106399612A CN201610976618.0A CN201610976618A CN106399612A CN 106399612 A CN106399612 A CN 106399612A CN 201610976618 A CN201610976618 A CN 201610976618A CN 106399612 A CN106399612 A CN 106399612A
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- 238000000034 method Methods 0.000 title description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 77
- 239000003034 coal gas Substances 0.000 claims description 46
- 239000007789 gas Substances 0.000 claims description 43
- 238000009825 accumulation Methods 0.000 claims description 31
- 238000002156 mixing Methods 0.000 claims description 30
- 239000002912 waste gas Substances 0.000 claims description 26
- 230000008859 change Effects 0.000 claims description 25
- 238000011534 incubation Methods 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000005276 aerator Methods 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004321 preservation Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000001717 pathogenic effect Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- MGCQZNBCJBRZDT-UHFFFAOYSA-N midodrine hydrochloride Chemical compound [H+].[Cl-].COC1=CC=C(OC)C(C(O)CNC(=O)CN)=C1 MGCQZNBCJBRZDT-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/14—Preheating the combustion air
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a blast furnace preheating system and particularly relates to a preheating energy saving system. The preheating energy saving system comprises a hot blast furnace, matching pipelines and control valves installed in the matching pipelines; the matching pipelines are provided with front combustion furnaces; a front air blower is connected to a pipeline located at the front end of one front combustion furnace; the matching pipelines comprise the gas heat exchange pipeline and the combustion air heat exchange pipeline; and air inlet ends of the gas heat exchange pipeline and the combustion air heat exchange pipeline communicate with air outlets of the front combustion furnaces. According to the preheating energy saving system, as the technical scheme is adopted, gas and combustion air are heated by arranging the two loops; meanwhile, a heat preservation device is arranged, the pipelines are optimized, and the energy saving and emission reduction effect is further achieved; and accordingly, the heat exchange efficiency is higher, heat exchange energy sources are utilized maximally, the temperature of the combustion air is ensured, consumption of combustion raw materials is reduced, and the combustion efficiency is improved.
Description
Technical field
The present invention relates to a kind of high furnace preheating system, specifically a kind of preheating energy-saving systems and pre-heating mean.
Background technology
With the development of process for making technology, reduce blast-furnace roasting consumption and seem more and more important, reduce what burning consumed
Major measure is improved pathogenic wind-warm, improves gas utilization rate and improves material condition etc., because China's blast furnace air temperature is generally relatively low, because
This improves the also very big potentiality of pathogenic wind-warm, and the flue gas that air stove enters flue is the waste gas after burning, and this flue gas is after combustion still
So there is Yu Wen, its temperature is about 200 degree of -300 degree, and exhaust gas volumn is larger, therefore, by using the heat of hot-blast stove fume
Carrying out warm-up combustion-supporting air is also research direction main in recent years, but this is using the mode shortcoming of smoke pre-heating merely：
Air themperature after preheating is much not up to combustion-supporting standard, and repeatedly preheating time is longer repeatedly, and the pipeline of needs is equally longer,
And energy input is big, in heat transfer process, combustion air loss, causes utilization rate relatively low.
Such as Patent No.：200410070660.3, patent name is：Blast furnace combustion air stove high temperature primary heater unit and its
Mention by arranging combustion air preheated in high temperature stove before combustion air stove in the patent of technique, by preheating furnace by air
Heating, the waste gas that the air after heating is discharged with air stove mixes, and combustion air is heated, and combustion air enters air stove
In, improve the pathogenic wind-warm in combustion process, advantage of this is that raising pathogenic wind-warm, reduce burning and consume, but shortcoming is its loop
Setting is complicated, and is intended to improve combustion air temperature, and the utilization rate of coal gas does not improve, meanwhile, in this system and be not provided with heat
Can store and attemperator, in hot blast transmit process, thermal energy consumption is larger, causes energy waste, meanwhile, in burning,
Reach during required hot blast rate it is impossible to be stored as needed, to provide the burning needs of next stage, pipeline transmit process is relatively
Long, design is simultaneously unreasonable, does not meet the fundamental policies of energy-saving and emission-reduction.
Content of the invention
In order to make up above deficiency, the invention provides the preheating energy-saving systems that a kind of loop is reasonable in design, energy consumption is relatively low
And pre-heating mean, to solve the problems, such as in above-mentioned background technology.
The technical scheme is that：
A kind of preheating energy-saving systems, including air stove, supporting pipeline and be arranged on control valve in supporting pipeline, described
In supporting pipeline, front combustion is set, preposition aerator connected on the front end pipeline of described front combustion, described join
Circuits include coal gas heat exchanging pipe and combustion air heat exchanging pipe, described coal gas heat exchanging pipe and combustion air heat exchanging pipe
Inlet end is connected with the gas outlet of front combustion, the outlet side of described coal gas heat exchanging pipe and combustion air heat exchanging pipe with heat
The inlet end of wind furnace is connected, and Ling You mixing chamber is connected in coal gas heat exchanging pipe, and the gas outlet of described air stove connects gives up
Air pipe, described exhaust pipe end of giving vent to anger is communicated in mixing chamber, gas change heater of connecting in described coal gas heat exchanging pipe,
Described mixing chamber is located at the front portion of gas change heater, the inlet end connection coal gas air blast of described gas change heater in pipeline
Machine, the waste gas outlet of described gas change heater is connected with the chimney being arranged in supporting pipeline by pipeline, described preposition combustion
Heat-storing device of connecting is burnt on the pipeline between stove and mixing chamber, the pipeline between described heat-storing device and mixing chamber is connected
Unidirectionally controlled valve.
As preferred technical scheme, described heat-storing device includes heat accumulation chamber and the incubation cavity being wrapped in outside heat accumulation chamber,
The air inlet pipe in described heat accumulation chamber, escape pipe and bypass escape pipe both pass through incubation cavity and extend to outside, the air inlet in described heat accumulation chamber
Gutron is crossed connecting line and is connected with the gas outlet of front combustion, and the escape pipe in described heat accumulation chamber is communicated to coal gas heat exchanging pipe
In, the bypass escape pipe in described heat accumulation chamber is communicated in combustion air heat exchanging pipe, described combustion air pipeline and coal gas heat exchange
In pipeline, equal serial temperature measures device, and the escape pipe in described heat accumulation chamber and bypass escape pipe are respectively provided with electric-controlled switch
Valve, described electric-controlled switch is connected by signal with temperature measuring apparatus.
As preferred technical scheme, the outer wall of described incubation cavity has opening, separately have the vacuum being connected with vacuum pump
Pipe is inserted in this opening.
As preferred technical scheme, the outer wall of described incubation cavity has opening, separately have the inflation being connected with inflator pump
Pipe is inserted in this opening.
As preferred technical scheme, described heat accumulation intracavity also connects compression tube, and one section of described compression tube passes through incubation cavity
Extend to outside, described compression tube is connected with the pressue device outside incubation cavity.
As preferred technical scheme, described gas change heater all includes housing shape heat exchanging chamber and is wrapped in outside heat exchanging chamber
External heat-exchanging chamber, plug-in mounting heat exchanger tube in described heat exchanging chamber, the outer end of described heat exchanger tube extends to outside through external heat-exchanging chamber,
The inner of described heat exchanger tube pass through heat exchanging chamber side wall be connected with external heat-exchanging chamber, the heat exchange air inlet pipe connecting with heat exchanging chamber and
Heat exchange escape pipe each extends to the outside in external heat-exchanging chamber, and described external heat-exchanging chamber has waste gas and outputs mouth, and described waste gas is discharged
In mouthful, plug-in mounting carries the exhaust emission tube of control valve.
As preferred technical scheme, described heat exchanger tube and external heat-exchanging chamber connectivity part are communicated with valve, described communicating valve
The valve plate inner including being fitted in heat exchanger tube, valve plate is provided with can be described by rotating the intercommunicating pore connecting with heat exchanger tube the inner
Connection rotating shaft on valve plate, rotating shaft one end extends to outside external heat-exchanging chamber by the axle sleeve being arranged on external heat-exchanging cavity outer wall,
And the roller end outside externally-located heat exchanging chamber is provided with turning handle.
As preferred technical scheme, the outside of described heat exchanger tube connects the cincture heat exchanger tube in divergent shape and arranges the wing that goes for a drive
Piece, the section of described fin is arc-shaped.
As preferred technical scheme, described external heat-exchanging chamber has the pumping being connected with air pump by connecting tube
Mouthful, the outlet side of described air pump is connected with chimney by connecting line.
A kind of pre-heating mean of preheating energy-saving systems, comprises the steps：
Step one：Produce hot blast
Air is sent into into front combustion by preposition aerator, the air sending into front combustion is heated to 1200
Degree -1500 degree, the hot blast after heating respectively enters in coal gas heat exchanging pipe and combustion air heat exchanging pipe.
Step 2：Heat exchange
The hot blast entering combustion air heat exchanging pipe is directly sent in air stove by pipeline, carries out combustion-supporting, enters coal gas
The hot blast of heat exchanging pipe initially enters in mixing chamber, and the waste gas that air stove simultaneously produces likewise enters in mixing chamber, with heat
Wind is mixed, and the hot blast producing after mixing enters in gas change heater, by gas-blowing engine, coal gas is passed through coal gas heat exchange
Device and mixed hot blast carry out heat exchange, and the coal gas after heat exchange reaches 500 degree of -600 degree, is passed through in air stove.
Step 3：Energy storage
The hot blast discharged from front combustion initially enters in energy storage device, after temperature measuring apparatus are to energy storage device
Pipeline in temperature detected, when the temperature is too low, temperature measuring apparatus send signal to electric-controlled switch, and electric-controlled switch controls
Valve opening, enters in combustion air heat exchanging pipe and coal gas heat exchanging pipe positioned at the hot blast in energy storage device, is subsequently sent
Wind step, when temperature measuring apparatus temperature of the measurement is too high, temperature measuring apparatus send signal, electric-controlled switch control to electric-controlled switch
Valve closing processed, hot blast is stored in energy storage device, no longer blows.
Step 4：Waste gas is discharged
After heat exchange in heat exchanger, the waste gas of cooling, will by the pipeline being connected with the chimney of least significant end in whole pipeline
Waste gas is sent in chimney, by carrying out a series of purifying and dedusting in chimney, by smoke stack emission in air.
Due to employing technique scheme, a kind of preheating energy-saving systems of the present invention pass through to arrange double loop by coal
Gas and help hot air, meanwhile, arranges energy-storage system, stores unnecessary heat energy, need for follow-up burning, it is to avoid the energy
Consume, meanwhile, attemperator is set, pipeline is optimized, further energy-saving and emission-reduction, make heat exchange efficiency higher, maximally utilize and change
Heat energy, it is ensured that the temperature of combustion air, reduces the consumption of combustion material, improves efficiency of combustion.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, also may be used
So that other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the structural representation of present invention heat exchanger；
Fig. 3 is the structural representation of heat-storing device of the present invention；
Fig. 4 is the sectional schematic diagram of heat exchanger tube of the present invention.
In figure：1st, air stove；2nd, front combustion；3rd, preposition aerator；4th, coal gas heat exchanging pipe；5th, combustion air heat exchange
Pipeline；6th, mixing chamber；7th, exhaust pipe；8th, gas change heater；9th, exhaust gas control valve door；10th, gas-blowing engine；11st, chimney；
12nd, heat-storing device；13rd, unidirectionally controlled valve；14th, temperature measuring apparatus；15th, electric-controlled switch valve；16th, preposition air-supply valve；
101st, heat accumulation chamber；102nd, incubation cavity；103rd, air inlet pipe；104th, escape pipe；105th, bypass escape pipe；106th, vacuum pump；108th, add
Pressure device；201st, heat exchanging chamber；202nd, external heat-exchanging chamber；203rd, heat exchanger tube；204th, control valve；205th, exhaust emission tube；206th, change
Hot air inlet pipe；207th, heat exchange escape pipe；208th, valve plate；209th, rotating shaft；210th, fin；211st, air pump；
Specific embodiment
Embodiment one：As shown in figure 1, a kind of preheating energy-saving systems of the present invention, including air stove 1, supporting pipeline
And it is arranged on control valve 18 in supporting pipeline, described control valve 18 is arranged on the connecting line connecting between stream oriented device
On, described air stove 1 is common blast furnace, will not be described here, and arranges front combustion 2 in described supporting pipeline, described before
Put combustion furnace 2 and be located at pipeline foremost, the air inlet of front combustion 2 is connected with preposition aerator 3 by connecting line, institute
State and preposition air-supply valve 16 is arranged on the connecting line between preposition aerator 3 and front combustion 2, open preposition air-supply valve
16, air is injected into front combustion 2 by preposition aerator 3, the air of injection passes through front combustion 2 heating and reaches finger
Constant temperature degree, generally 1200 degree -1500 degree, open air-supply step.
Described supporting pipeline includes coal gas heat exchanging pipe 4 and combustion air heat exchanging pipe 5, described coal gas heat exchanging pipe 4 He
The inlet end of combustion air heat exchanging pipe 5 is connected with the gas outlet of front combustion 2, described coal gas heat exchanging pipe 4 and combustion-supporting sky
The outlet side of gas heat exchanging pipe 5 is connected with the inlet end of air stove 1, sends into coal gas heat exchanging pipe 4 and combustion air heat exchanger tube
Hot blast in road 5 passes through heat exchange, energy storage enters in air stove 1, and Ling You mixing chamber 6 is connected in coal gas heat exchanging pipe 4, described
The gas outlet of air stove 1 connects exhaust pipe 7, and described exhaust pipe 7 end of giving vent to anger is communicated in mixing chamber 6, described waste gas
Series connection exhaust gas control valve door 9 in pipeline 7, described mixing chamber 6 is used for mixing hot blast stove 1 waste gas and front combustion 2 heating
Hot blast, by the opening and closing of exhaust gas control valve door 9, control that hot blast is mixed with waste gas two, thus reach needing heat exchange
Temperature.
In described coal gas heat exchanging pipe 4 connect gas change heater 8, gas change heater 8 have gas entry, gas exit,
Recuperated gas entrance and waste gas outlet, described mixing chamber 6 is located at the front portion of gas change heater 8 in pipeline, mixing chamber 6 with
Control valve, the inlet end connection gas-blowing engine 10 of described gas change heater 8, institute are arranged on the pipeline between gas change heater 8
The waste gas outlet stating gas change heater 8 is connected with the chimney 11 being arranged in supporting pipeline by pipeline, the waste gas after heat exchange
Temperature drop, by discharge of pipes in chimney, through purification runs such as dust removals by filtration, is discharged in air.
Connect on pipeline between described front combustion 2 and mixing chamber 6 heat-storing device 12, described heat-storing device 12 with
Connect on pipeline between mixing chamber 6 unidirectional control valve 13, the gas flow heat-storing device 12 in mixing chamber 6, it is to avoid
Gas backstreaming.
As shown in figure 3, the incubation cavity 102 that described heat-storing device includes heat accumulation chamber 101 and is wrapped in heat accumulation chamber 101 outside,
Hot blast after described front combustion 2 heating enters in heat accumulation chamber 101, by being arranged on the incubation cavity 102 in heat accumulation chamber 101 outside
It is incubated, in incubation cavity 102, is placed insulation material, described insulation material is had in prior art, heat-insulating property is good
Material, will not be described here, and the air inlet pipe 103 in described heat accumulation chamber 102, escape pipe 104 and bypass escape pipe 105 both pass through insulation
Chamber 102 extends to outside, and the air inlet pipe 103 in described heat accumulation chamber 101 is connected with the gas outlet of front combustion 2 by connecting line
Logical, the escape pipe 104 in described heat accumulation chamber 101 is communicated in coal gas heat exchanging pipe 4, the bypass escape pipe 105 in described heat accumulation chamber 101
It is communicated in combustion air heat exchanging pipe 5, in described combustion air pipeline 5 and coal gas heat exchanging pipe 4, equal serial temperature measures dress
Put 14, the escape pipe 104 in described heat accumulation chamber 101 and bypass escape pipe 105 are respectively provided with the valve 15 with electric-controlled switch, described
Electric-controlled switch is connected by signal with temperature measuring apparatus 14.
In the pipeline of temperature measuring apparatus measurement, temperature reaches designated value, and temperature measuring apparatus send a signal to automatically controlled opening
Close, control valve 15 is closed, and the hot blast in heat accumulation chamber 101 no longer exports, and is incubated, after being easy in heat accumulation chamber 101
Afterflame burns to be needed, and when in the pipeline of temperature measuring apparatus measurement, temperature is not up to designated value, temperature measuring apparatus send a signal to
Electric-controlled switch, control valve 15 is opened, and the hot blast in heat accumulation chamber 101 continues to output, and the afterflame burning for air stove 1 needs
Will.
While described incubation cavity 102 filling insulation material, vacuum or pressurized treatments can be carried out, increase its insulation further
Effect, it is to avoid heat energy loss is excessive, the outer wall of described incubation cavity 102 is had opening, separately has the vacuum being connected with vacuum pump 106
Pipe is inserted in this opening.Opening on described incubation cavity 102 outer wall can be connected with pressue device, in incubation cavity 102
Pressurization.
Further is to increase heat insulation effect, also connects pressue device 108, described pressue device in described heat accumulation chamber 101
108 1 sections extend to outside through incubation cavity 102, by pressue device 108, the hot blast in heat accumulation chamber 101 are pressurizeed, and pressure increases
While big, its temperature has raised.
As shown in Fig. 2 described gas change heater 8 includes housing shape heat exchanging chamber 201 and is wrapped in the outer of heat exchanging chamber 201 outside
Portion's heat exchanging chamber 202, plug-in mounting heat exchanger tube 203 in described heat exchanging chamber 201, described in described heat exchanger tube 203, the outer end of heat exchanger tube 203 passes through
External heat-exchanging chamber 202 extends to outside, and hot blast enters in heat exchanger tube 203, and the inner of described heat exchanger tube 203 passes through heat exchanging chamber 201
Side wall be connected with external heat-exchanging chamber 202, described external heat-exchanging chamber 202 carries out heat exchange in the outside of heat exchanging chamber 201, meanwhile,
Avoid the recuperated gas in heat exchanging chamber 201 in heat transfer process to contact cool exterior air, reduce thermal energy consumption, with heat exchanging chamber 201 even
Logical heat exchange air inlet pipe 206 and heat exchange escape pipe 207 each extend to the outside in external heat-exchanging chamber 202, heat exchange air inlet pipe 206 and changing
Hot escape pipe 207 is used for the inlet and outlet of coal gas, and described external heat-exchanging chamber 202 has waste gas and outputs mouth, cooling after heat exchange
Air is discharged by outlet port, and in described outlet port, plug-in mounting carries the exhaust emission tube 205 of control valve 204, described
Exhaust emission tube more than 205 chimney 11 connects.
Described heat exchanger tube 203 is communicated with valve with external heat-exchanging chamber 202 connectivity part, and described communicating valve includes being fitted in heat exchange
The inner valve plate 208 of pipe, valve plate 208 is provided with can be by rotating the intercommunicating pore connecting with heat exchanger tube 203 the inner, on described valve plate
Connection rotating shaft 209, rotating shaft 209 one end extends to external heat-exchanging chamber 202 by the axle sleeve being arranged on the outer wall of external heat-exchanging chamber 202
Outside, and the roller end in externally-located heat exchanging chamber 202 outside is provided with turning handle, rotating shaft, makes the connection on valve plate 208
Hole is connected with heat exchanger tube 203, and the hot blast in heat exchanger tube 203 enters external heat-exchanging chamber 202, rotational valve plate 208 again, makes intercommunicating pore
Do not connect with heat exchanger tube 203, only can carry out heat exchange in heat exchanging chamber 201, be not required to external heat-exchanging.
As shown in figure 4, the outside of described heat exchanger tube 203 connects arranges, around heat exchanger tube 203, the fin that goes for a drive in divergent shape
210, the section of described fin 210 is arc-shaped, and described fin 210 plays and slows down the coal gas wind speed entering in heat exchanging chamber 201
Effect, improves heat transfer effect.
Described external heat-exchanging chamber 202 has the bleeding point being connected with air pump 211, described air pump by connecting tube
211 outlet side is connected with chimney 11 by connecting line.
A kind of pre-heating mean of application preheating energy-saving systems, comprises the steps：
Step one：Produce hot blast
Air is sent into into front combustion by preposition aerator, the air sending into front combustion is heated to 1200
Degree -1500 degree, the hot blast after heating respectively enters in coal gas heat exchanging pipe and combustion air heat exchanging pipe.
Step 2：Heat exchange
The hot blast entering combustion air heat exchanging pipe is directly sent in air stove by pipeline, carries out combustion-supporting, enters coal gas
The hot blast of heat exchanging pipe initially enters in mixing chamber, and the waste gas that air stove simultaneously produces likewise enters in mixing chamber, with heat
Wind is mixed, and the hot blast producing after mixing enters in gas change heater, by gas-blowing engine, coal gas is passed through coal gas heat exchange
Device and mixed hot blast carry out heat exchange, and the coal gas after heat exchange reaches 500 degree of -600 degree, is passed through in air stove.
Step 3：Energy storage
The hot blast discharged from front combustion initially enters in energy storage device, after temperature measuring apparatus are to energy storage device
Pipeline in temperature detected, when the temperature is too low, temperature measuring apparatus send signal to electric-controlled switch, and electric-controlled switch controls
Valve opening, enters in combustion air heat exchanging pipe and coal gas heat exchanging pipe positioned at the hot blast in energy storage device, is subsequently sent
Wind step, when temperature measuring apparatus temperature of the measurement is too high, temperature measuring apparatus send signal, electric-controlled switch control to electric-controlled switch
Valve closing processed, hot blast is stored in energy storage device, no longer blows.
Step 4：Waste gas is discharged
After heat exchange in heat exchanger, the waste gas of cooling, will by the pipeline being connected with the chimney of least significant end in whole pipeline
Waste gas is sent in chimney, by carrying out a series of purifying and dedusting in chimney, by smoke stack emission in air.
Ultimate principle, principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.
Claims (10)
1. a kind of preheating energy-saving systems, including air stove, supporting pipeline and be arranged on control valve in supporting pipeline, its feature
It is：In described supporting pipeline, front combustion is set, preposition air blast is connected on the front end pipeline of described front combustion
Machine, described supporting pipeline includes coal gas heat exchanging pipe and combustion air heat exchanging pipe, described coal gas heat exchanging pipe and combustion air
The inlet end of heat exchanging pipe is connected with the gas outlet of front combustion, described coal gas heat exchanging pipe and combustion air heat exchanging pipe
Outlet side is connected with the inlet end of air stove, and Ling You mixing chamber is connected in coal gas heat exchanging pipe, the going out of described air stove
QI KOU connects exhaust pipe, and described exhaust pipe end of giving vent to anger is communicated in mixing chamber, connects in described coal gas heat exchanging pipe
Gas change heater, described mixing chamber is located at the front portion of gas change heater in pipeline, and the inlet end of described gas change heater is even
Ventilating coal gas aerator, the waste gas outlet of described gas change heater is connected with the chimney being arranged in supporting pipeline by pipeline,
Connect on pipeline between described front combustion and mixing chamber heat-storing device, between described heat-storing device and mixing chamber
Connect on pipeline unidirectional control valve.
2. as claimed in claim 1 a kind of preheating energy-saving systems it is characterised in that：Described heat-storing device includes heat accumulation chamber and bag
It is rolled in the incubation cavity outside heat accumulation chamber, the air inlet pipe in described heat accumulation chamber, escape pipe and bypass escape pipe both pass through incubation cavity and extend
To outside, the air inlet pipe in described heat accumulation chamber is connected with the gas outlet of front combustion by connecting line, described heat accumulation chamber
Escape pipe is communicated in coal gas heat exchanging pipe, and the bypass escape pipe in described heat accumulation chamber is communicated in combustion air heat exchanging pipe, institute
State equal serial temperature in combustion air pipeline and coal gas heat exchanging pipe and measure device, the escape pipe in described heat accumulation chamber and bypass are given vent to anger
Valve with electric-controlled switch is respectively provided with pipe, described electric-controlled switch is connected by signal with temperature measuring apparatus.
3. as claimed in claim 2 a kind of preheating energy-saving systems it is characterised in that：Have out on the outer wall of described incubation cavity
Mouthful, separately there is the vacuum tube being connected with vacuum pump to be inserted in this opening.
4. as claimed in claim 3 a kind of preheating energy-saving systems it is characterised in that：Have out on the outer wall of described incubation cavity
Mouthful, separately there is the gas tube being connected with inflator pump to be inserted in this opening.
5. a kind of preheating energy-saving systems as described in claim 3 or 4 it is characterised in that：Described heat accumulation intracavity also connects pressurization
Pipe, one section of described compression tube passes through outside incubation cavity extends to, described compression tube and the pressue device phase outside incubation cavity
Connect.
6. a kind of preheating energy-saving systems as described in claim 1,2,3 or 4 it is characterised in that：Described gas change heater all wraps
The external heat-exchanging chamber including housing shape heat exchanging chamber and being wrapped in outside heat exchanging chamber, plug-in mounting heat exchanger tube in described heat exchanging chamber, described heat exchange
The outer end of pipe extends to outside through external heat-exchanging chamber, and the inner of described heat exchanger tube passes through side wall and the external heat-exchanging chamber of heat exchanging chamber
It is connected, the heat exchange air inlet pipe connecting with heat exchanging chamber and heat exchange escape pipe each extend to the outside in external heat-exchanging chamber, described outside
Heat exchanging chamber has waste gas and outputs mouth, and in described outlet port, plug-in mounting carries the exhaust emission tube of control valve.
7. as claimed in claim 6 a kind of preheating energy-saving systems it is characterised in that：Described heat exchanger tube is connected with external heat-exchanging chamber
Place is communicated with valve, and described communicating valve includes being fitted in the inner valve plate of heat exchanger tube, and valve plate is provided with can be by rotation and heat exchange
The intercommunicating pore of the inner connection of pipe, connection rotating shaft on described valve plate, rotating shaft one end is by being arranged on the axle on external heat-exchanging cavity outer wall
Set extends to outside external heat-exchanging chamber, and the roller end outside externally-located heat exchanging chamber is provided with turning handle.
8. a kind of preheating energy-saving systems as claimed in claims 6 or 7 it is characterised in that：The outside of described heat exchanger tube connects
Divergent shape arranges, around heat exchanger tube, the fin that goes for a drive, and the section of described fin is arc-shaped.
9. as claimed in claim 7 a kind of preheating energy-saving systems it is characterised in that：Described external heat-exchanging chamber has and air pump
The bleeding point being connected by connecting tube, the outlet side of described air pump is connected with chimney by connecting line.
10. a kind of application claim 1 preheating energy-saving systems pre-heating mean it is characterised in that：Comprise the steps：
Step one：Produce hot blast
Air is sent into into front combustion by preposition aerator, send into front combustion air be heated to 1200 degree-
1500 degree, the hot blast after heating respectively enters in coal gas heat exchanging pipe and combustion air heat exchanging pipe.
Step 2：Heat exchange
The hot blast entering combustion air heat exchanging pipe is directly sent in air stove by pipeline, carries out combustion-supporting, enters coal gas heat exchange
The hot blast of pipeline initially enters in mixing chamber, and the waste gas that air stove simultaneously produces likewise enters in mixing chamber, enters with hot blast
Row mixing, after mixing produce hot blast enter gas change heater in, by gas-blowing engine by coal gas be passed through gas change heater with
Mixed hot blast carries out heat exchange, and the coal gas after heat exchange reaches 500 degree of -600 degree, is passed through in air stove.
Step 3：Energy storage
The hot blast discharged from front combustion initially enters in energy storage device, and temperature measuring apparatus are to the pipe after energy storage device
In road, temperature is detected, when the temperature is too low, temperature measuring apparatus send signal, electric-controlled switch control valve to electric-controlled switch
Open, enter in combustion air heat exchanging pipe and coal gas heat exchanging pipe positioned at the hot blast in energy storage device, step of subsequently being blown
Suddenly, when temperature measuring apparatus temperature of the measurement is too high, temperature measuring apparatus send signal, electric-controlled switch control valve to electric-controlled switch
Door is closed, and hot blast is stored in energy storage device, no longer blows.
Step 4：Waste gas is discharged
After heat exchange in heat exchanger cooling waste gas by the pipeline being connected with the chimney of least significant end in whole pipeline, by waste gas
Send in chimney, by carrying out a series of purifying and dedusting in chimney, by smoke stack emission in air.
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| CN116334335A (en) * | 2023-03-02 | 2023-06-27 | 扬州岱发环保科技有限公司 | A hot blast stove with a uniform preheating mechanism |
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| CN106399612B (en) | 2019-01-25 |
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