CN108489290A - A kind of high-temperature flue gas residual neat recovering system - Google Patents
A kind of high-temperature flue gas residual neat recovering system Download PDFInfo
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- CN108489290A CN108489290A CN201810490795.7A CN201810490795A CN108489290A CN 108489290 A CN108489290 A CN 108489290A CN 201810490795 A CN201810490795 A CN 201810490795A CN 108489290 A CN108489290 A CN 108489290A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention belongs to coal tar deep processing technical fields, and in particular to a kind of high-temperature flue gas residual neat recovering system.The interface of high-temperature heat-exchanging and high-temperature flue gas wind turbine is provided with high-temperature expansion joint, cold wind bypass pipe and air blower are provided with by high-temperature heat-exchanging, air volume meter and volume damper are provided between high-temperature heat-exchanging and high-temperature burner, it is connected by high-temperature flue between pure radial pattern heating furnace and high-temperature heat-exchanging, the flue gas by-pass flue of automatic regulating valve is provided on high-temperature flue, high-temperature flue gas wind turbine is arranged in the downstream of high-temperature heat-exchanging, flue gas after high-temperature heat-exchanging heat exchange introduces low temperature flue by high-temperature flue gas wind turbine, finally by the smoke stack emission at the top of pure radial pattern heating furnace.High-temperature flue gas of the temperature higher than 450 DEG C that conventional residual neat recovering system does not recycle can be down to 450 DEG C hereinafter, to recycle the heat of the high temperature section in high-temperature flue gas by the present invention, reduce energy consumption.
Description
Technical field
The invention belongs to coal tar deep processing technical fields, and in particular to a kind of high-temperature flue gas residual neat recovering system.
Background technology
The tube furnace of coal tar deep processing system, since heated medium is easy coking fluid, for later stage operation and maintenance
It is convenient, usually use pure radiant-type pipe still, exhaust gas temperature to be usually more than 450 DEG C.Conventional residual neat recovering system is suitable for row
Smoke temperature degree is less than 450 DEG C of flue gas, and exhaust gas temperature is higher than 450 DEG C, and profit is integrated using waste heat boiler when load is larger
With, but for the tube furnace of tar deep processing industry, since integral load is smaller, while exhaust gas temperature is higher than 450 DEG C, high temperature cigarette
The method of gas waste heat recovery is less.In coal tar deep processing system, load fluctuation occurs once in a while for device, and tube furnace is brought to discharge fume
Temperature superelevation in short-term, influences whether residual neat recovering system, especially smoke induced draught fan safe operation and service life.High-temperature residual heat
The high fume temperature of recovery system can bring the height not available for conventional waste heat recovery due to the thermal expansion properties of material itself
Warm stress problem, crucial high-temperature heat-exchanging and smoke pipeline need special designing.
Invention content
The purpose of the present invention is to provide a kind of system being recycled in 450 to 750 DEG C of high-temperature residual heat for recycling exhaust gas temperature
System, is recycled by high-temperature residual heat, high-temperature flue-gas can be brought down below to 450 DEG C hereinafter, can reconnect conventional waste heat in turn
Recovery system further recycles heat.
In order to achieve the above objectives, the technical solution used in the present invention is：
It is swollen that the interface of a kind of high-temperature flue gas residual neat recovering system, high-temperature heat-exchanging and high-temperature flue gas wind turbine is provided with high temperature
Swollen section is provided with cold wind bypass pipe and air blower by high-temperature heat-exchanging, wind is provided between high-temperature heat-exchanging and high-temperature burner
Gauge and volume damper are connected by high-temperature flue between pure radial pattern heating furnace and high-temperature heat-exchanging, are set on high-temperature flue
The flue gas by-pass flue with automatic regulating valve is set, high-temperature flue gas wind turbine is arranged in the downstream of high-temperature heat-exchanging, high-temperature heat-exchanging
Flue gas after heat exchange introduces low temperature flue by high-temperature flue gas wind turbine, is arranged finally by the chimney at the top of pure radial pattern heating furnace
It puts.
The high-temperature heat-exchanging includes high-temperature heat exchange tube group, and high-temperature heat exchange tube group is supported using one end, and the other end is certainly
By holding, high-temperature heat exchange tube group upper end is connect with inner expansion joint, and high-temperature heat exchange tube group bottom is connect with low-temperature flue gas conduit, low temperature
Smoke tube, which is equipped with, cleans leakage fluid dram, and high-temperature heat exchange tube group surrounding is sealed by box hat forms heat exchanger tube shell side, heat exchanger tube shell side
Top is with the high-temperature flue gas conduit for cleaning reserved opening.
The high-temperature expansion joint is bellow-type structure, uses the above material of stainless steel 304.
The high-temperature flue uses external thermal insulation structure, uses the above material of stainless steel 304.
Low temperature flue spare interface is provided in the low temperature flue.
The high-temperature flue gas wind turbine, for cooling down, uses the above material of stainless steel 304 using recirculated water.
Low temperature smoke pipe temperature point is set between the high-temperature flue gas wind turbine and high-temperature heat-exchanging, when low temperature smoke pipe temperature
When measuring point measures flue-gas temperature more than a limit value, automatic regulating valve is opened on the flue gas by-pass flue with automatic regulating valve, portion
Divide high-temperature flue gas to be directly discharged in low temperature flue from the flue gas by-pass flue with automatic regulating valve, reduces high-temperature flue gas wind turbine
Inlet temperature；The flue gas flow of bypass ensures the cigarette into high-temperature flue gas wind turbine by low temperature smoke pipe temperature point feedback control
Temperature degree not overtemperature.
When normal operation, is drawn from the chimney of pure radial pattern heating furnace higher than 450 DEG C of high-temperature flue gas, pass through high-temperature flue
Into high-temperature heat-exchanging；The combustion air of room temperature introduces high-temperature heat-exchanging by air blower from air, and combustion air is in high-temperature heat-exchanging
In with high-temperature flue gas exchange heat generate high temperature combustion supporting air；When underrun, combustion air throughput is bypassed by increase, improves heat exchange
The tube wall temperature of pipe avoids the dew point corrosion of high-temperature heat-exchanging.
When the system failure or maintenance, air blower normal use, cold wind walks cold wind bypass pipe, and exchanges heat without high temperature
Device is directly entered in high-temperature burner；Closed type flue damper at the top of pure radial pattern heating furnace is opened, high-temperature flue gas directly from
Chimney is in line, without entering system.
High-temperature flue gas enters high-temperature heat exchange tube group from high-temperature flue gas conduit, and the low-temperature flue gas after heat exchange is from low-temperature flue gas conduit
Discharge；Room temperature combustion air enters heat exchanger tube shell side from the side of high-temperature heat-exchanging, is exchanged heat by multiple tracks baffling, from high-temperature heat-exchanging
Side is discharged；It cleans reserved opening and cleaning high-temperature heat exchange tube group inner wall is rinsed by steam-out (SO) or water, the waste liquid after cleaning is by clear
Sweep leakage fluid dram discharge.
It is obtained by the present invention to have the beneficial effect that：
It, can by a set of high-temperature air preheater containing included expansion joint, the residual neat recovering system of high-temperature flue gas wind turbine
With do not recycle conventional residual neat recovering system, high-temperature flue gas of the temperature higher than 450 DEG C is down to 450 DEG C hereinafter, to recycle
The heat of high temperature section in high-temperature flue gas reduces the energy consumption of device.
It is equipped with a branch for carrying automatic regulating valve at high-temperature flue, is fed back and is adjusted by the temperature point of heat exchanger exit
The aperture of automatic regulating valve is saved, cold wind is introduced, to achieve the effect that protect flue gas wind turbine, to ensure that whole device will not
Because the fluctuation once in a while of load leads to whole parking.
Externally one low-temperature flue gas interface of setting can add common residual neat recovering system or de- according to actual requirement of engineering
Sulphur denitrating technique system, expands the applicability of this system.
The present invention is tried out in 350,000 tons/year of coal tar deep processing projects.Heat duty of pipe still 3MW, is not arranged
When high temperature heat-exchange system, tube furnace exhaust temperature is 709 DEG C, the thermal efficiency 63%, fuel consumption 1062Nm3/h；Access high temperature changes
After hot systems, exhaust gas temperature is down to 375 DEG C, and the thermal efficiency rises to 78%, fuel consumption 858Nm3/h, annual by operation 8000h cores
It calculates, it is vertical that fuel 1,634,000 can be saved every year.
Description of the drawings
Fig. 1 is the flow chart of high-temperature flue gas residual neat recovering system；
Fig. 2 is the overall structure figure of high-temperature flue gas residual neat recovering system；
Fig. 3 is the partial schematic diagram I of high-temperature flue gas residual neat recovering system；
Fig. 4 is the partial schematic diagram II of high-temperature flue gas residual neat recovering system；
Fig. 5 is the structural schematic diagram of high-temperature heat-exchanging；
In figure：1, air blower；2, high-temperature expansion joint；3, high-temperature heat-exchanging；4, cold wind bypass pipe；5, air volume meter；6, air quantity
Regulating valve；7, high-temperature burner；8, pure radial pattern heating furnace；9, high-temperature flue；10, the flue gas with automatic regulating valve bypasses cigarette
Road；11, low temperature smoke pipe temperature point；12, low temperature flue spare interface；13, low temperature flue；14, high-temperature flue gas wind turbine；15, cigarette
Chimney；16, closed type flue damper；3-1, high-temperature heat exchange tube group；3-2, inner expansion joint；3-3, reserved opening is cleaned；3-4, high temperature
Smoke tube；3-5, leakage fluid dram is cleaned；3-6, low-temperature flue gas conduit；3-7, heat exchanger tube shell side.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1-5, high-temperature flue gas residual neat recovering system of the present invention includes air blower 1, high-temperature heat-exchanging 3, height
Warm burner 7, pure radial pattern heating furnace 8 and high-temperature flue gas wind turbine 14.The expansion of high-temperature pipe carrys out equipment belt in order to prevent
Larger expansion thrust, high-temperature heat-exchanging 3 and the interface of high-temperature flue gas wind turbine 14 are provided with high-temperature expansion joint 2, high-temperature heat-exchanging 3
Side is provided with cold wind bypass pipe 4 and air blower 1, and flow measurement and adjusting are provided between high-temperature heat-exchanging 3 and high-temperature burner 7
Air volume meter 5 and volume damper 6 are connected between pure radial pattern heating furnace 8 and high-temperature heat-exchanging 3 by high-temperature flue 9, together
When the flue gas by-pass flue 10 of automatic regulating valve is provided on high-temperature flue 9, the flue gas after high-temperature heat-exchanging 3 exchanges heat passes through
High-temperature flue gas wind turbine 14 introduces low temperature flue 13, is discharged finally by the top chimney 15 of pure radial pattern heating furnace 8, while low
Warm flue 13 is equipped with low temperature flue spare interface 12.
High-temperature heat-exchanging 3 includes high-temperature heat exchange tube group 3-1, and the high-temperature heat exchange tube upper ends group 3-1 connect with inner expansion joint 3-2
It connects, the high-temperature heat exchange tube bottoms group 3-1 are connect with low-temperature flue gas conduit 3-6, and low-temperature flue gas conduit 3-6, which is equipped with, cleans leakage fluid dram 3-
5, high-temperature heat exchange tube group 3-1 surroundings form heat exchanger tube shell side 3-7 by box hat sealing, and the tops heat exchanger tube shell side 3-7 are with clear
Sweep the high-temperature flue gas conduit 3-4 of reserved opening 3-3.
The 2 above material of materials'use stainless steel 304 of the high-temperature expansion joint, using bellow-type structure, that brings is good
Place is can be effective against the corrosion and oxidation that high-temperature flue gas is brought, while can the effective swell increment brought of extraction duct；
The high-temperature flue 9 uses external thermal insulation structure, without using internal insulation structure.Its benefit brought can be to avoid interior
The impurity that portion's thermal insulation material falls off enters high-temperature blower and heat exchanger, so as to cause the failure of system operation；
The flue gas by-pass flue 10 with automatic regulating valve is provided on the high-temperature flue 9, having the advantage that can
To avoid heating furnace once in a while load fluctuation bring it is unnecessary stop in emergency, to improve the stability of overall operation；
Low temperature flue spare interface 12 is set in the low temperature flue 13, is had the advantage that according to Practical Project need
It wants, by the conventional residual neat recovering system of the flue gas access less than 450 DEG C after heat exchange or system for desulfuration and denitration can be introduced, expanded
The applicability of system；
The 14 above material of materials'use stainless steel 304 of the high-temperature flue gas wind turbine, and using recirculated water for cooling down, band
The benefit come is that can have the actual motion temperature for reducing wind turbine, improves the fan operation service life；
In high-temperature heat exchange tube group 3-1 end sets inner expansion joint 3-2, inner expansion joint 3-2 in the high-temperature heat-exchanging 3
Using the above material of stainless steel 304, has the advantage that and can ensure to change in the expansion of equipment absorbed inside high-temperature heat exchange tube beam
Hot device safe and stable operation；
It is equipped on high-temperature flue gas conduit 3-4 in the high-temperature heat-exchanging 3 and cleans reserved opening 3-3, in low-temperature flue gas conduit
3-6, which is equipped with, cleans leakage fluid dram 3-5, and having the advantage that can be in the case where removing high-temperature air preheater, heat exchanging
Tube bank is internal to be cleaned, and is simplified maintenance procedures, is improved the service life of heat exchanger.
When normal operation, is drawn from the chimney 15 of pure radial pattern heating furnace 8 higher than 450 DEG C of high-temperature flue gas, pass through high temperature
Flue 9 enters high-temperature heat-exchanging 3, and to avoid impurity from introducing high-temperature heat-exchanging 3 and high-temperature flue gas wind turbine 14, high-temperature flue 9 uses
External thermal insulation, pipe material select stainless steel 304 or more material according to temperature in use.High-temperature flue gas wind turbine 14 is placed on high temperature and changes
The downstream of hot device 3, the lower region of temperature.Exporting to the low temperature flue 13 from chimney 15 from high-temperature flue gas wind turbine 14 then can basis
Actual needs selection inside holding or external thermal insulation；When selecting inside holding, the material of smoke pipe can be ordinary carbon steel.For extraction duct because
The thermal expansion that high temperature generates, it is swollen to be respectively provided with stainless steel high temperature in the inlet and outlet of high-temperature flue gas wind turbine 14 and high-temperature heat-exchanging 3
Swollen section 2.High-temperature flue gas wind turbine 14 then selects to use stainless steel, while introducing cooling circulating water for reducing the use of wind turbine
Temperature.
To prevent pure 8 load of the radial pattern heating furnace flue-gas temperature superelevation that wave zone comes once in a while, it is provided on high-temperature flue 9
Flue gas by-pass flue 10 with automatic regulating valve, and low temperature is set between high-temperature flue gas wind turbine 14 and high-temperature heat-exchanging 3
Smoke pipe temperature point 11.When low temperature smoke pipe temperature point 11, which measures flue-gas temperature, is more than a limit value, with automatic regulating valve
Automatic regulating valve is opened on flue gas by-pass flue 10, and part high-temperature flue gas is straight from the flue gas by-pass flue 10 with automatic regulating valve
Run in and be put into low temperature flue 13, so as to reduce the inlet temperature of high-temperature flue gas wind turbine 14.The flue gas flow of bypass can be by low
Warm 11 feedback control of smoke pipe temperature point, to ensure the flue-gas temperature not overtemperature into high-temperature flue gas wind turbine 14.
It is equipped with low temperature flue spare interface 12 in low temperature flue 13, is sealed with blind flange, bore and low temperature flue 13 1
It causes.When actual requirement of engineering, can external common residual neat recovering system, the heat in further recovered flue gas；Or external desulfurization
Denitrating system, for reducing pollutant discharge amount.
The combustion air of room temperature introduces high-temperature heat-exchanging 3 by air blower 1 from air, and air blower 1 can select according to the design needs
Select separate unit or two (1 open 1 standby).In order to easy to maintenance and avoid low-temperature corrosion, cold wind bypass pipe is set on 3 side of high-temperature heat-exchanging
4.When normal operation, combustion air can exchange heat with high-temperature flue gas in high-temperature heat-exchanging 3 and generate high temperature combustion supporting air.When device underload
When operation, combustion air throughput can be bypassed by increase, the tube wall temperature of heat exchanger tube can be improved, and then avoid high-temperature heat-exchanging
Dew point corrosion.Setting air volume meter 5 and volume damper 6 can be selected on demand in the downstream of high-temperature heat-exchanging 3, according to measured value essence
Really control combustion air volume, can also reduce plant energy consumption.
When high-temperature residual heat recovery system failure or maintenance, high-temperature flue gas recovery system can be isolated by following operation.
1 normal use of air blower, cold wind walk cold wind bypass pipe 4, and without high-temperature heat-exchanging 3, it is directly entered in high-temperature burner 7；
The closed type flue damper 16 at 8 top of pure radial pattern heating furnace is opened, and high-temperature flue gas is directly in line from chimney 15, high without entering
Warm heat-exchange system.
The key equipment high-temperature heat-exchanging 3 of the present invention is achieved in the following ways：High-temperature flue gas is from high-temperature heat-exchanging 3
Top high-temperature flue gas conduit 3-4 enters high-temperature heat exchange tube group 3-1, and the low-temperature flue gas after heat exchange is led from exchanger base low-temperature flue gas
Pipe 3-6 discharges.Room temperature combustion air enters heat exchanger tube shell side 3-7 from the side of high-temperature heat-exchanging 3, is exchanged heat by multiple tracks baffling, from
3 side of high-temperature heat-exchanging is discharged.High-temperature heat exchange tube group 3-1 can select 304 stainless steels and the above material according to temperature in use difference.
High-temperature heat exchange tube group 3-1 uses one end support (this example is bottom support, also can upper support), and high-temperature heat exchange tube group 3-1
The other end is free end, is connect with inner expansion joint 3-2, and inner expansion joint 3-2 can absorb the high temperature of 3-1 inside high-temperature heat exchange tube
Swell increment ensures that the interface of 3 external connection of high-temperature heat-exchanging ensures non-displacement in operation.To prevent viscous component in flue gas attached
In high-temperature heat-exchanging 3, in high-temperature flue gas conduit 3-4 there are reserved opening 3-3 is cleaned, it can be rinsed clear by steam-out (SO) or water
High-temperature heat exchange tube group 3-1 inner walls are managed, the waste liquid after cleaning can be discharged by the cleaning leakage fluid dram 3-5 on low-temperature flue gas conduit 3-6, from
And extend the service life of high-temperature heat-exchanging 3.
Claims (10)
1. a kind of high-temperature flue gas residual neat recovering system, it is characterised in that：The interface of high-temperature heat-exchanging and high-temperature flue gas wind turbine is set
Be equipped with high-temperature expansion joint, be provided with cold wind bypass pipe and air blower by high-temperature heat-exchanging, high-temperature heat-exchanging and high-temperature burner it
Between be provided with air volume meter and volume damper, connected by high-temperature flue between pure radial pattern heating furnace and high-temperature heat-exchanging, it is high
The flue gas by-pass flue of automatic regulating valve is provided on warm flue, high-temperature flue gas wind turbine is arranged in the downstream of high-temperature heat-exchanging,
Flue gas after high-temperature heat-exchanging heat exchange introduces low temperature flue by high-temperature flue gas wind turbine, finally by the top of pure radial pattern heating furnace
Smoke stack emission.
2. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：The high-temperature heat-exchanging includes
High-temperature heat exchange tube group, high-temperature heat exchange tube group are supported using one end, and the other end is free end, and high-temperature heat exchange tube group upper end and inside are swollen
Swollen section connection, high-temperature heat exchange tube group bottom are connect with low-temperature flue gas conduit, and low-temperature flue gas conduit, which is equipped with, cleans leakage fluid dram, high temperature
Set of heat exchange tubes surrounding is sealed by box hat forms heat exchanger tube shell side, and heat exchanger tube shell side top is with the high-temperature flue gas for cleaning reserved opening
Conduit.
3. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：The high-temperature expansion joint is wave
Line tubular structure uses the above material of stainless steel 304.
4. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：The high-temperature flue is using outer
Insulation construction uses the above material of stainless steel 304.
5. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：It is arranged in the low temperature flue
There is low temperature flue spare interface.
6. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：The high-temperature flue gas wind turbine is adopted
With recirculated water for cooling down, the above material of stainless steel 304 is used.
7. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：The high-temperature flue gas wind turbine with
Low temperature smoke pipe temperature point is set between high-temperature heat-exchanging, is more than a limit value when low temperature smoke pipe temperature point measures flue-gas temperature
When, it carries automatic regulating valve on the flue gas by-pass flue of automatic regulating valve and opens, part high-temperature flue gas is from automatic regulating valve
Flue gas by-pass flue be directly discharged in low temperature flue, reduce high-temperature flue gas wind turbine inlet temperature；The flue gas flow of bypass
By low temperature smoke pipe temperature point feedback control, ensure the flue-gas temperature not overtemperature into high-temperature flue gas wind turbine.
8. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：When normal operation, it is higher than 450 DEG C
High-temperature flue gas is drawn from the chimney of pure radial pattern heating furnace, enters high-temperature heat-exchanging by high-temperature flue；The combustion air of room temperature
High-temperature heat-exchanging is introduced from air by air blower, it is combustion-supporting that combustion air generates high temperature in high-temperature heat-exchanging with high-temperature flue gas heat exchange
Wind；When underrun, combustion air throughput is bypassed by increase, the tube wall temperature of heat exchanger tube is improved, avoids high-temperature heat-exchanging
Dew point corrosion.
9. high-temperature flue gas residual neat recovering system according to claim 1, it is characterised in that：When the system failure or maintenance,
Air blower normal use, cold wind walk cold wind bypass pipe, and without high-temperature heat-exchanging, it is directly entered in high-temperature burner；Pure spoke
Closed type flue damper at the top of emitting heating furnace is opened, and high-temperature flue gas is directly in line from chimney, without entering system.
10. high-temperature flue gas residual neat recovering system according to claim 2, it is characterised in that：High-temperature flue gas is from high-temperature flue gas
Conduit enters high-temperature heat exchange tube group, and the low-temperature flue gas after heat exchange is discharged from low-temperature flue gas conduit；Room temperature combustion air exchanges heat from high temperature
The side of device enters heat exchanger tube shell side, is exchanged heat by multiple tracks baffling, is discharged from high-temperature heat-exchanging side；Reserved opening is cleaned outside
It connects steam or water rinses cleaning high-temperature heat exchange tube group inner wall, the waste liquid after cleaning is discharged by cleaning leakage fluid dram.
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| CN201810490795.7A CN108489290A (en) | 2018-05-21 | 2018-05-21 | A kind of high-temperature flue gas residual neat recovering system |
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| CN109373313A (en) * | 2018-12-03 | 2019-02-22 | 北京京诚泽宇能源环保工程技术有限公司 | A kind of Recovery Purifying integration reheat furnace system |
| CN109373313B (en) * | 2018-12-03 | 2024-03-22 | 北京京诚泽宇能源环保工程技术有限公司 | Purification and recovery integrated heating furnace system |
| CN110143773A (en) * | 2019-05-30 | 2019-08-20 | 郑州三迪建筑科技有限公司 | Ardealite calcination system |
| CN110579315A (en) * | 2019-09-23 | 2019-12-17 | 武汉钢铁有限公司 | Heating furnace gas heat exchanger leak hunting device |
| CN111238040A (en) * | 2020-02-29 | 2020-06-05 | 沈伟斌 | Layered boiler heat exchange water tank structure based on water-steam heat energy exchange |
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Application publication date: 20180904 |