CN110500779A - Three casees regenerative heat-exchange stoving process of one kind and working principle - Google Patents
Three casees regenerative heat-exchange stoving process of one kind and working principle Download PDFInfo
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- CN110500779A CN110500779A CN201910805472.7A CN201910805472A CN110500779A CN 110500779 A CN110500779 A CN 110500779A CN 201910805472 A CN201910805472 A CN 201910805472A CN 110500779 A CN110500779 A CN 110500779A
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- heat
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- temperature
- accumulation
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/025—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using fluid fuel
- F24H7/0258—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using fluid fuel the transfer fluid being air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/006—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for regenerative heat-exchange apparatus
Abstract
A kind of three casees regenerative heat-exchanges stoving process of the present invention is to realize drying gas and the exchange of high-temperature flue gas indirect heat by three casees heat regenerators, pass through PLC control system simultaneously, it is precisely controlled smog discharge temperature, during heat maximum in flue gas is used for drying materials, the purpose of drying course environmental protection and energy saving is realized.
Description
Technical field
The present invention relates to drying technology fields, are related specifically to a kind of three casees regenerative heat-exchange stoving process and the original that works
Reason.
Background technique
Drying materials are the processes that water in material is transformed into vapor and feed separation in the way of heat, drying heat
The mode of amount supply has very much, wherein be one of the most common type stoving process using hot wind as heat source material drying, it is traditional
Hot-flue dryer is to directly heat material with hot wind, and moisture is transformed into vapor and feed separation in material, realizes that material dries
It is dry, when drying odorous material, to dry in gas and carry a large amount of smells, gas direct emission causes secondary environmental pollution,
The bad control of exhaust emissions temperature is dried simultaneously, and exhaust temperature is high, causes drying heat largely to waste, one kind proposed by the present invention
Three casees regenerative heat-exchange stoving process can solve the above problem.
Summary of the invention
A kind of three casees regenerative heat-exchanges stoving process of the present invention is to realize drying by three casees heat regenerators
Gas and the exchange of high-temperature flue gas indirect heat, at the same by PLC control system, it is precisely controlled smog discharge temperature, it will be in flue gas
Maximum heat is used for during drying materials, realizes the purpose of drying course environmental protection and energy saving.
Three casees regenerative heat-exchange stoving process of one kind are by dryer (1), carrier gas dehydration equipment (2), circulating fan
(3), three casees heat regenerators (4), burner (5), hot-blast stove (6), fume treatment auxiliary (7), air-introduced machine (8), discharge drum
(9), high pressure gas generation system (10) forms；Dryer (1) use hot-air seasoning type equipment, frequently with device type
There are the drying equipments such as belt drying machine, roller dryer, whirlwind spray dryer；Carrier gas dehydration equipment (2) is to pass through
The cooling method that exchanges heat reduces carrier gas temperature, and the vapor in carrier gas is condensed into the equipment that water droplet removes, and commonly uses
Equipment has the combining process equipment of spray column, condenser, air-air heat exchanger or three kinds of equipment；Three casees heat regenerator (4) is
The heat of high-temperature flue gas is converted into carrier gas heat, while controlling smog discharge temperature in range of set value, was avoided
High smoke temperature discharges the equipment for causing heat waste；Three casees heat regenerators (4) are by three cabinet channels (41), 15 power
Valve (42) and PLC control system are composed, and heat-storing material (411) are arranged in cabinet channel (41), common heat-storing material
For heat-storing sphere, heat storage or accumulation of heat filler；Three casees heat regenerators (4) control power valve by PLC control system (43)
(42), be in different working conditions in three cabinet channels (41) of same period, be respectively accumulation of heat heating, accumulation of heat cooling,
Accumulation of heat purging, accumulation of heat heating are that the high-temperature flue gas that hot-blast stove generates is heated to heat-storing material (411), and high-temperature flue-gas reduces,
The raised process of heat-storing material (411) temperature, when accumulation of heat cooling is that carrier gas passes through heat-storing material (411), heat-storing material
(411) heat in is released to carrier gas, and carrier gas temperature increases, the process that heat-storing material (411) temperature reduces, accumulation of heat
Purging is to remain in the carrier gas in heat-storing material (411) to enter carrier gas under high pressure gas purging, avoids carrier gas
Body enters flue gas, and flue gas stink is caused to pollute；(4) three cabinet channel (41) the state switchings of three casees heat regenerators are according to row
The signal that temperature instrument (431) on smoke pipeline gives, is controlled by PLC control program, works as temperature instrument
(431) when detection temperature value reaches setting value, power valve switches under PLC control, and three cabinets are not parked in accumulation of heat and add
Do not stop cyclic switching between heat, accumulation of heat cooling, accumulation of heat purging, realizes indirect heat exchange between high-temperature flue gas and carrier gas；Burning
Device (5) is fuel and oxygen cooperation combustion apparatus, different burners is selected according to fuel type, there are commonly biomass combustions
Device, gas burner, oil burner etc., carrier gas oxygen content is suitable with air, there is stink, by three casees regenerative heat-exchanges
After device heating, temperature is high, and carrier gas is used to use as burner oxygen-fed gas, is improving system thermal efficiency resolved vector simultaneously
The extra air quantity deodorization problem of gas.
Three casees regenerative heat-exchange stoving process working principles of one kind are that burner passes through fuel and Component Vectors gas mixing ratio
Burning generates high-temperature flue gas and enters hot-blast stove, subsequently into three casees heat regenerator (4) accumulation of heat heated condition cabinet channels
(41) in, to heat-storing material (411) heating in cabinet, flue-gas temperature is reduced, and heat-storing material (411) temperature rises, when accumulation of heat material
When material absorption heat reaches certain temperature, discharge flue-gas temperature is increased, and temperature instrument (431) detected value, which reaches, on flue sets
When definite value, PLC control system starts power valve (42) switching, the cabinet of former accumulation of heat purging state according to regulatory process automatically
Channel enters accumulation of heat heated condition, and the cabinet channel of former accumulation of heat heated condition enters accumulation of heat cooling state, former accumulation of heat cooling state
Cabinet channel enter accumulation of heat purging state, after switching in this way, high-temperature flue gas gives temperature lower heat-storing material heating, storage again
Hot material absorbs heat, and the temperature of flue gas emission is reduced to setting value hereinafter, in continuous heating process, and heat-storing material temperature will
It gradually rises, flue-gas temperature will also be gradually increased, and switch triggering next time when reaching setting value, by three casees regenerative heat-exchanges
Flue gas after device (4) enters after exhaust treatment system processing and enters discharge drum discharge through air-introduced machine；Carrier gas circulates, In
Dryer (1), carrier gas dehydration equipment (2), circulating fan (3), three casees heat regenerator (4) accumulation of heats cooling state cabinet
Channel circulates in (41), and the carrier gas temperature into dryer is high, and gas water amount is small, into dryer after with material
It contacts, water is transformed into vapor and is taken out of by carrier gas in material, and material water ratio reduces, drying materials, then carrier gas
Into in carrier gas dehydration equipment (2), heat exchange occurs with water or gas, temperature reduces, and vapor is cold in carrier gas
It congeals into water droplet to remove from gas, be sent out subsequently into three casees heat regenerator (41) accumulation of heats cooling channel and heat-storing material
Heat exchange, carrier gas heating, carrier gas carry the enhancing of moisture ability, have the ability for carrying moisture again, to guarantee
The closed negative pressure of circulation line, the gas of accumulation of heat blowback and the extraneous gas for entering circulation line enter secondary through burner blower
High-temp combustion in combustion furnace thoroughly solves drying carrier gas stink pollution problem.
Detailed description of the invention
Fig. 1 three casees regenerative heat-exchange stoving process flow charts of one kind, tri- casees heat regenerator composition figures of Fig. 2
(1) dryer, (2) carrier gas dehydration equipment, (3) circulating fan, (4) three casees heat regenerators, (5) burner,
(6) hot-blast stove, (7) fume treatment auxiliary, (8) air-introduced machine, (9) discharge drum, (10) high pressure gas generation system, (41) cabinet are logical
Road, (42) power valve, (411) heat-storing material, (431) temperature instrument.
Specific embodiment
Embodiment 1
Three casees regenerative heat-exchange stoving process specific embodiments of one kind are that dryer (1) selects band drier, carrier gas
Dehydration equipment (2) air-air heat exchanger+condenser combination, circulating fan (3), three casees heat regenerators (4), burning
Device (5) is using biomass burner, hot-blast stove (6), fume treatment auxiliary (7) using bag filter, air-introduced machine (8), discharge
Cylinder (9), high pressure gas generation system (10) composition；Above equipment is connected with each other according to Fig. 1 sequence, constitutes a whole set of drying
Process system.Biomass burner is burnt by biomass granule fuel and Component Vectors gas mixing ratio, generate high-temperature flue gas into
Enter hot-blast stove, be in accumulation of heat heated condition cabinet channel (41) subsequently into three casees heat regenerators (4), is stored in cabinet
Hot material (411) heating, flue-gas temperature reduce, and heat-storing material (411) temperature rises, and reach certain when heat-storing material absorbs heat
When temperature, discharge flue-gas temperature is increased, when temperature instrument (431) detected value reaches setting value on flue, PLC control system
System starts power valve (42) switching according to regulatory process automatically, and the cabinet channel of former accumulation of heat purging state enters accumulation of heat heating shape
State, the cabinet channel of former accumulation of heat heated condition enter accumulation of heat cooling state, and the cabinet channel of former accumulation of heat cooling state enters accumulation of heat
Purging state, after switching in this way, high-temperature flue gas gives temperature lower heat-storing material heating again, and heat-storing material absorbs heat, cigarette
The temperature of gas discharge is reduced to setting value hereinafter, in continuous heating process, and heat-storing material temperature will gradually rise, flue-gas temperature
Also it will be gradually increased, switch triggering next time when reaching setting value, the flue gas after three casees heat regenerators (4) enters
Enter discharge drum discharge through air-introduced machine after exhaust treatment system processing；Carrier gas circulates, in belt drying machine, air-air
Heat exchanger+condenser unit equipment, circulating fan (3), three casees heat regenerator (4) accumulation of heats cooling state cabinet channel (41)
In circulate, the carrier gas temperature into dryer is high, and gas water amount is small, into dryer after contacted with material, object
Water is transformed into vapor and is taken out of by carrier gas in material, and material water ratio reduces, and drying materials, then carrier gas enters carrier
In gas dewatering equipment (2), heat exchange occurs with water or gas, temperature reduces, and vapor is condensed into water droplet in carrier gas
It is removed from gas, heat occurs subsequently into three casees heat regenerator (41) accumulation of heats cooling channel and heat-storing material and hands over
It changes, carrier gas heating, carrier gas carries the enhancing of moisture ability, has the ability for carrying moisture, again to guarantee circulation pipe
The closed negative pressure in road, the gas of accumulation of heat blowback and the extraneous gas for entering circulation line enter after-burning stove through burner blower
Interior high-temp combustion thoroughly solves drying carrier gas stink pollution problem.
Embodiment 2
Three casees regenerative heat-exchange stoving process specific embodiments of one kind are that dryer (1) selects three-pass rotary drum drying machine, carries
Body gas dewatering equipment (2) spray column+condenser combination, circulating fan (3), three casees heat regenerators (4), burning
Device (5) is using neat gas burner, hot-blast stove (6), fume treatment auxiliary (7) using bag filter, air-introduced machine (8), discharge
Cylinder (9), high pressure gas generation system (10) composition；Above equipment is connected with each other according to Fig. 1 sequence, constitutes a whole set of drying
Process system.Neat gas burner is burnt by natural gas and Component Vectors gas mixing ratio, is generated high-temperature flue gas and is entered hot-blast stove,
It is in accumulation of heat heated condition cabinet channel (41) subsequently into three casees heat regenerators (4), to heat-storing material in cabinet
(411) it heats, flue-gas temperature reduces, and heat-storing material (411) temperature rises, and reaches certain temperature when heat-storing material absorbs heat
When, discharge flue-gas temperature increases, and when temperature instrument (431) detected value reaches setting value on flue, PLC control system is pressed
Regulating and controlling illumination program starts power valve (42) switching automatically, and the cabinet channel of former accumulation of heat purging state enters accumulation of heat heated condition,
The cabinet channel of former accumulation of heat heated condition enters accumulation of heat cooling state, and the cabinet channel of former accumulation of heat cooling state enters accumulation of heat purging
State, after switching in this way, high-temperature flue gas gives temperature lower heat-storing material heating again, and heat-storing material absorbs heat, flue gas row
The temperature put is reduced to setting value hereinafter, in continuous heating process, and heat-storing material temperature will gradually rise, and flue-gas temperature also will
It is gradually increased, switches triggering next time when reaching setting value, the flue gas after three casees heat regenerators (4) enters tail gas
Enter discharge drum discharge through air-introduced machine after processing system processing；Carrier gas circulates, in belt drying machine, air-air heat exchange
Device+condenser unit equipment, circulating fan (3), three casees heat regenerator (4) accumulation of heats cooling state cabinet channel (41) in follow
Circulation is dynamic, and the carrier gas temperature into dryer is high, and gas water amount is small, into dryer after contacted with material, in material
Water is transformed into vapor and is taken out of by carrier gas, and material water ratio reduces, and drying materials, then carrier gas enters carrier gas
In dehydration equipment (2), heat exchange occurs with water or gas, temperature reduces, and vapor is condensed into water droplet from gas in carrier gas
It is removed in body, heat exchange occurs subsequently into three casees heat regenerator (41) accumulation of heats cooling channel and heat-storing material, carries
Body gas heating, carrier gas carry the enhancing of moisture ability, have the ability for carrying moisture again, to guarantee that circulation line is closed
Negative pressure, the gas of accumulation of heat blowback and the extraneous gas for entering circulation line enter second-time burning furnace high-temperature through burner blower
Burning thoroughly solves drying carrier gas stink pollution problem.
Above-mentioned case study on implementation does not represent all techniques all, no longer illustrates one by one at this.
Claims (8)
1. a kind of three casees regenerative heat-exchange stoving process and working principle, it is characterised in that: a kind of three casees regenerative heat-exchanges drying
Technique and working principle are to realize drying gas and the exchange of high-temperature flue gas indirect heat by three casees heat regenerators, are led to simultaneously
PLC control system is crossed, smog discharge temperature is precisely controlled, during heat maximum in flue gas is used for drying materials, is realized
The purpose of drying course environmental protection and energy saving.
2. a kind of three casees regenerative heat-exchanges stoving process according to claim 1, it is characterised in that: a kind of three casees heat accumulating types
Exchange heat stoving process by dryer (1), carrier gas dehydration equipment (2), circulating fan (3), three casees heat regenerators (4),
Burner (5), hot-blast stove (6), fume treatment auxiliary (7), air-introduced machine (8), discharge drum (9), high pressure gas generation system (10)
Composition.
3. a kind of three casees regenerative heat-exchanges stoving process working principle according to claim 1, it is characterised in that: Yi Zhongsan
Case regenerative heat-exchange stoving process working principle is that burner is burnt by fuel and Component Vectors gas mixing ratio, generates high temperature cigarette
Gas enters hot-blast stove, subsequently into three casees heat regenerator (4) accumulation of heat heated condition cabinet channels (41), stores in cabinet
Hot material (411) heating, flue-gas temperature reduce, and heat-storing material (411) temperature rises, and reach certain when heat-storing material absorbs heat
When temperature, discharge flue-gas temperature is increased, when temperature instrument (431) detected value reaches setting value on flue, PLC control system
System starts power valve (42) switching according to regulatory process automatically, and the cabinet channel of former accumulation of heat purging state enters accumulation of heat heating shape
State, the cabinet channel of former accumulation of heat heated condition enter accumulation of heat cooling state, and the cabinet channel of former accumulation of heat cooling state enters accumulation of heat
Purging state, after switching in this way, high-temperature flue gas gives temperature lower heat-storing material heating again, and heat-storing material absorbs heat, cigarette
The temperature of gas discharge is reduced to setting value hereinafter, in continuous heating process, and heat-storing material temperature will gradually rise, flue-gas temperature
Also it will be gradually increased, switch triggering next time when reaching setting value, the flue gas after three casees heat regenerators (4) enters
Enter discharge drum discharge through air-introduced machine after exhaust treatment system processing；Carrier gas circulates, in dryer (1), carrier gas
Body dehydration equipment (2), circulating fan (3), three casees heat regenerator (4) accumulation of heats cooling state cabinet channel (41) in recycle stream
Dynamic, the carrier gas temperature into dryer is high, and gas water amount is small, into dryer after contacted with material, water turns in material
Become vapor to be taken out of by carrier gas, material water ratio reduces, drying materials, and then carrier gas enters carrier gas dehydration
In equipment (2), heat exchange occurs with water or gas, temperature reduces, and vapor is condensed into water droplet from gas in carrier gas
Removing is got off, and heat exchange, carrier gas occurs subsequently into three casees heat regenerator (41) accumulation of heats cooling channel and heat-storing material
Body heating, carrier gas carry the enhancing of moisture ability, have the ability for carrying moisture again, to guarantee the closed negative pressure of circulation line
Property, the gas of accumulation of heat blowback and the extraneous gas for entering circulation line enter second-time burning furnace high-temperature through burner blower and fire
It burns, thoroughly solves drying carrier gas stink pollution problem.
4. dryer according to claim 2, it is characterised in that: the equipment that dryer (1) uses hot-air seasoning type, often
The device type of use has the drying equipments such as belt drying machine, roller dryer, whirlwind spray dryer.
5. carrier gas dehydration equipment according to claim 2, it is characterised in that: carrier gas dehydration equipment (2) is logical
Crossing heat exchange cooling method reduces carrier gas temperature, and the vapor in carrier gas is condensed into the equipment that water droplet removes, often
There is the combining process equipment of spray column, condenser, air-air heat exchanger or three kinds of equipment with equipment.
6. three casees heat regenerators according to claim 2, it is characterised in that: three casees heat regenerators (4) be by
The heat of high-temperature flue gas is converted into carrier gas heat, while controlling smog discharge temperature in range of set value, avoids excessively high
Smoke temperature discharges the equipment for causing heat waste.
7. burner according to claim 2, it is characterised in that: burner (5) is that fuel and oxygen cooperate combustion apparatus,
Different burners is selected according to fuel type, there are commonly biomass burner, gas burner, oil burners etc., carry
Body oxygen content gas is suitable with air, there is stink, and after three casees heat regenerators heat, temperature is high, is made with carrier gas
For the use of burner oxygen-fed gas, the system thermal efficiency extra air quantity deodorization problem of resolved vector gas simultaneously is being improved.
8. three casees heat regenerators according to claim 6, it is characterised in that: three casees heat regenerators (4) be by
Three cabinet channels (41), 15 power valves (42) and PLC control system are composed, and accumulation of heat is arranged in cabinet channel (41)
Material (411), common heat-storing material are heat-storing sphere, heat storage or accumulation of heat filler；Three casees heat regenerator (4) passes through PLC
Control system (43) controls power valve (42), is in different working conditions in three cabinet channels (41) of same period,
It is accumulation of heat heating, accumulation of heat cooling, accumulation of heat purging respectively, accumulation of heat heating is the high-temperature flue gas of hot-blast stove generation to heat-storing material
(411) it heats, high-temperature flue-gas reduces, the raised process of heat-storing material (411) temperature, and accumulation of heat cooling is that carrier gas passes through
When heat-storing material (411), the heat in heat-storing material (411) is released to carrier gas, and carrier gas temperature increases, heat-storing material
(411) process that temperature reduces, accumulation of heat purging are to remain in the carrier gas in heat-storing material (411) under high pressure gas purging
Into carrier gas, carrier gas is avoided to enter flue gas, flue gas stink is caused to pollute；(4) three casees of three casees heat regenerators
Body channel (41) the state switching signal given according to the temperature instrument (431) on smoke discharging pipe, passes through PLC control program
It is controlled, when temperature instrument (431) detection temperature value reaches setting value, power valve is cut under PLC control
It changes, three cabinets, which are not parked between accumulation of heat heating, accumulation of heat cooling, accumulation of heat purging, does not stop cyclic switching, realizes high-temperature flue gas and carrier
Indirect heat exchange between gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805472.7A CN110500779A (en) | 2019-08-29 | 2019-08-29 | Three casees regenerative heat-exchange stoving process of one kind and working principle |
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| CN201910805472.7A CN110500779A (en) | 2019-08-29 | 2019-08-29 | Three casees regenerative heat-exchange stoving process of one kind and working principle |
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| CN110500779A true CN110500779A (en) | 2019-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123829A (en) * | 2020-01-14 | 2020-05-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Efficient heat storage baking method for steel ladle |
-
2019
- 2019-08-29 CN CN201910805472.7A patent/CN110500779A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123829A (en) * | 2020-01-14 | 2020-05-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Efficient heat storage baking method for steel ladle |
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