CN105953409A - Vertical energy saving device for fuel gas heating medium furnace - Google Patents
Vertical energy saving device for fuel gas heating medium furnace Download PDFInfo
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- CN105953409A CN105953409A CN201610473931.2A CN201610473931A CN105953409A CN 105953409 A CN105953409 A CN 105953409A CN 201610473931 A CN201610473931 A CN 201610473931A CN 105953409 A CN105953409 A CN 105953409A
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- Prior art keywords
- heat recovery
- waste heat
- air
- equipment
- oxygen
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Classifications
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- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/66—Preheating the combustion air or gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
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- 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
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- 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
- F24H9/00—Details
- F24H9/0084—Combustion air preheating
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention relates to energy saving equipment for a fuel gas heating medium furnace, in particular to a vertical energy saving device for the fuel gas heating medium furnace. The vertical energy saving device mainly comprises a W-type vacuum pump (1), an air blower (3), an oxygen enrichment film assembly (4), an air preheating coil pipe (8), an electric butterfly valve (9), a waste heat recovery coil pipe (16), a fin heat exchange pipe (17), a waste heat recovery induced draft fan (19) and a centrifugal fan (26). According to the vertical energy saving device, the two-stage smoke waste heat recovery and utilization technology and the air oxygen increasing technology are adopted; on the one hand, air, fuel and materials are preheated through waste heat of the preheated smoke, and on the other hand, the temperature and the oxygen content of the combustion air are increased by adding oxygen-enriched air; and the height of flames is lowed, besides combustion intensity is improved, the combustion speed is increased, and good heat conduction is obtained; and meanwhile the temperature of the flames is increased, the complete combustion reaction is facilitated, the discharging volume of the smoke is reduced, and the functions that energy is saved, thermal efficiency is improved, and emission of pollutants is reduced are achieved.
Description
[technical field]
The present invention relates to a kind of combustion gas hot Media Oven energy-saving equipment, especially relate to a kind of Verticle gas hot Media Oven energy saver.
[background technology]
Known, gas fired-boiler is a kind of heat energy conversion equipment, and combustion gas is burnt in burner hearth, makes the chemical energy of combustion gas be changed into the heat energy of flue gas.High-temperature flue gas carries out heat exchange at burner hearth, then enters chimney through flue and discharges.The main component of natural gas is methane, and the hydrogen of methane generates the hot steam of substantial amounts of mistake in combustion, additionally, also contain a small amount of steam in combustion air, this two parts steam adds up and accounts for about the 1/5 of smoke evacuation flue gas volume.Therefore, in the flue gas of gas fired-boiler, the share of steam is very big, containing substantial amounts of latent heat.Major part gas fired-boiler and Central Air-Conditioner, general exhaust gas temperature is all at about 150 DEG C, and the steam boiler many for producing is above 200 DEG C.Substantial amounts of waste heat wastes.It addition, the latent heat of vaporization of fuel is higher, the high low heat value such as natural gas differs about 10%, therefore increases waste heat recovery apparatus the most necessary.In the combustion air of fuel gas buring, the volume content of oxygen is 20.93%, and remaining major part is nitrogen.Participate in burning oxygen duty gas total amount about 1/5, not only and the nitrogen of duty gas total amount about 4/5 and other noble gas the most combustion-supporting, on the contrary will along with burning carrying out take away substantial amounts of heat energy.
[summary of the invention]
In order to overcome the deficiency in background technology, the open a kind of Verticle gas hot Media Oven energy saver of the present invention, the present invention uses secondary smoke heat recovery technology, oxygenating air technology, on the one hand preheating preheating air by flue gas afterheat and fuel are utilized, material, on the other hand oxygen-enriched air is added by improving combustion air temperature and oxygen content, flame height is not only made to shorten, and improve combustion intensity, accelerate burning velocity, obtain preferable conduction of heat, simultaneously, flame temperature improves, it is beneficial to combustion reaction complete, decrease flue gas displaced volume, there is the saving energy, improve the thermal efficiency, reduce the effect of pollutant emission.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of Verticle gas hot Media Oven energy saver, including film oxygen enriching equipment, air prewarming device, fuel preheating equipment and flue gas heat recovery equipment, film oxygen enriching equipment includes W type vacuum pump, air filter, aerator, oxygen-enriched membrane component, oxygen-enriched air pipe；Air prewarming device includes preheated air pipe, cool air inlet, air preheat coil pipe, centrifugal blower；Fuel preheating equipment includes fin heat exchange pipe, waste heat recovery utilizing equipment；Flue gas heat recovery equipment includes electric butterfly valve, waste heat recovery gas approach, waste heat recovery exhaust pass, waste heat recovery utilizing equipment, waste heat recovery coil pipe, fin heat exchange pipe, waste heat recovery air-introduced machine；Film oxygen enriching equipment is connected with the preheated air pipe of air prewarming device by oxygen-enriched air pipe；The air preheat coil pipe of air prewarming device is arranged between the chimney bottom of gas furnace and gas furnace top；Waste heat recovery gas approach and the waste heat recovery exhaust pass of flue gas heat recovery equipment are sequentially arranged at chimney bottom, install electric butterfly valve in the middle of the waste heat recovery gas approach of chimney and waste heat recovery exhaust pass.
Described Verticle gas hot Media Oven energy saver, the air filter of film oxygen enriching equipment is arranged on the entrance of aerator, and the outlet of aerator is connected with the entrance of oxygen-enriched membrane component；The outlet of oxygen-enriched membrane component is connected with W type vacuum pump inlet, and oxygen-enriched air pipe is arranged on W type vacuum pump outlet.
Described Verticle gas hot Media Oven energy saver, the cool air inlet of air prewarming device is arranged on the entrance of air preheat coil pipe, and the outlet of air preheat coil pipe is connected with preheated air pipe；Preheated air pipe is connected with centrifugal blower entrance, and centrifugal blower outlet is connected with hot-air manifold entrance.
Described Verticle gas hot Media Oven energy saver, the fin heat exchange pipe of fuel preheating equipment is arranged on inside waste heat recovery utilizing equipment, and fin heat exchange pipe one end connects combustion gas, and the other end is connected with burner inlet by pipeline.
Described Verticle gas hot Media Oven energy saver, the waste heat recovery gas approach arrival end of flue gas heat recovery equipment is connected with chimney, and waste heat recovery gas approach arrival end installs electric butterfly valve；The waste heat recovery gas approach port of export is connected with waste heat recovery utilizing equipment entrance, and waste heat recovery utilizing equipment outlet is connected with waste heat recovery air-introduced machine entrance；The outlet of waste heat recovery air-introduced machine is connected with waste heat recovery exhaust pass entrance, and the outlet of waste heat recovery exhaust pass is connected with chimney, and installation site is on electric butterfly valve top；Waste heat recovery coil pipe, fin heat exchange pipe are mounted in parallel inside waste heat recovery utilizing equipment.
Described Verticle gas hot Media Oven energy saver, the waste heat recovery coil pipe in waste heat recovery utilizing equipment is one group of corrosion-resistant coil pipe, or the corrosion-resistant coil pipe of many groups；Fin heat exchange pipe in waste heat recovery utilizing equipment is one group of corrosion resistance fin heat exchanger tube, or many group corrosion resistance fin heat exchanger tubes.
Owing to using technical scheme as above, there is advantages that
Verticle gas hot Media Oven energy saver of the present invention: 1, film oxygen enriching equipment prepares oxygen-enriched air, improves combustion air oxygen content；The oxygen content air more than 20.93% is called oxygen-enriched air.Oxygen-enriched air participates in burning and has the most energy-conservation and environmental protection effect.At the same temperature, oxygen-rich concentration is the highest, burns the most complete, and blackness of the exhaust is the lowest, energy-conservation the best with environment protecting；Membrance separation oxygen generating plant is to utilize to have the high molecular polymerization fibrous material of special selection separation property as resolution element, under certain driving force effect, makes oxygen or the many components of oxygen be enriched with through film；Oxygen-enriched air can improve flame temperature.Using oxygen-enriched combustion technology that nitrogen amount can be made to reduce, air capacity and exhaust gas volumn all substantially reduce, thus flame temperature along with in combustion air the increase of oxygen proportion and significantly improve.The oxygen concentration of combustion air often promotes one percentage point flame temperature and improves 35 DEG C.Oxygen-enriched air can be accelerated burning velocity and promote burning completely.With oxygen-enriched combustion technology, burning velocity can not only be improved, it is thus achieved that preferably conduction of heat, after temperature improves simultaneously, beneficially combustion reaction, promote that burning completely, is inherently eliminated smoke contamination；Oxygen-enriched air can reduce the ignition temperature of fuel.The ignition temperature of fuel is not constant, and burning-point as aerial in CO is 609 DEG C, and burning-point in pure oxygen is only 388 DEG C, so using oxygen-enriched, pure oxygen burning can improve flame intensity and increase release heat etc.；Oxygen-enriched air can reduce the flue gas discharge capacity after burning.With air-breathing, the N2 accounting for volume 4/5 does not participate in combustion-supporting, and along with a large amount of heat energy is taken away in burning, as combustion-supporting with oxygen rich gas, the capacity after burning reduces, thus improves efficiency of combustion；Oxygen-enriched air can increase heat utilization ratio.The utilization rate of heat is increased by oxygen-enriched, Pure Oxygen Combustion Technology, as combustion-supporting by normal air, when heating-up temperature is 1300 DEG C, its available heat is 42%, and with 26% dense oxygen air-breathing time, amount usable is 56%, oxygen concentration between 21%～30% its heat utilization ratio with oxygen concentration improve and raise the fastest, therefore optimal to improving heat utilization ratio in this oxygen ranges, therefore energy-saving effect is the best；Oxygen-enriched air can reduce coefficient of excess air.Oxygen-enriched, pure oxygen burning increases in atmosphere along with oxygen content, and nitrogen amount declines, and can suitably reduce the coefficient of excess of air, and so, fuel consumption is the most corresponding to be reduced, thus saves the energy；Owing to burning-point oxygen-enriched, that Pure Oxygen Combustion Technology can make carbon reduces, burning complete and strong, flame degree of filling is good, improves the bulk temperature of burner hearth, one object is directly proportional to the biquadratic of the heat of ambient radiation to the absolute temperature of this object, here it is " fourth-power law "
Radiation law.
2, double to combustion air and fuel temperature preheatings can be advantageously reduced coefficient of excess air, improve ignition temperature, reach energy-conservation fuel-saving effect by air prewarming device and fuel preheating equipment；Being the combustion gas of 3000kJ/m3 for calorific capacity, its temperature often raises 1 ° of C, and will absorb heat 1.4512kJ/m3, the 0.8306kJ/m3 and the air capacity required for the lm3 combustion gas of this calorific value that burns only is absorbed heat.In this case, fuel gas temperature is increased to 100 ° of C, theoretical temperature combustion can be made to raise 52 ° of C, and combustion air temperature raises 100 ° of C, and theoretical temperature combustion raises 29 ° of C.When combustion air and the double preheating of combustion gas, the effect improving theoretical temperature combustion is both effect sums respectively.When the combustion gas that calorific capacity is 3000kJ/m3, from 1.10, coefficient of excess air can be reduced to 1.05, theoretical flame ignition temperature is by about 20 ° of C of raising.
3, flue gas heat recovery equipment can recycle flue gas heat and substantial amounts of steam latent heat, reduces the sulfur content of discharged gas fume.
[accompanying drawing explanation]
Fig. 1 is the flow chart of Verticle gas hot Media Oven energy saver of the present invention；
In figure: 1, W type vacuum pump；2, air filter；3, aerator；4, oxygen-enriched membrane component；5, oxygen-enriched air pipe；6, preheated air pipe；7, cool air inlet；8, air preheat coil pipe；9, electric butterfly valve；10, chimney；11, electric butterfly valve；12, heating agent entrance；13, waste heat recovery gas approach；14, waste heat recovery exhaust pass；15, waste heat recovery utilizing equipment；16, waste heat recovery coil pipe；17, fin heat exchange pipe；18, combustion gas；19, waste heat recovery air-introduced machine；20, heating agent outlet；21, gas furnace；22, hot-air house steward；23, burner；24, altar lamp airduct；25, heating agent heat exchange coil；26, centrifugal blower.
[detailed description of the invention]
Can be explained in more detail the present invention by the following examples, the open purpose of the present invention is intended to all changes and improvements in the protection scope of the invention, the invention is not limited in the following examples；
In conjunction with the Verticle gas hot Media Oven energy saver described in accompanying drawing 1, including film oxygen enriching equipment, air prewarming device, fuel preheating equipment and flue gas heat recovery equipment.Film oxygen enriching equipment includes W type vacuum pump 1, air filter 2, aerator 3, oxygen-enriched membrane component 4, oxygen-enriched air pipe 5；Air prewarming device includes preheated air pipe 6, cool air inlet 7, air preheat coil pipe 8, centrifugal blower 26；Fuel preheating equipment includes fin heat exchange pipe 17, waste heat recovery utilizing equipment 15；Flue gas heat recovery equipment includes electric butterfly valve 11, waste heat recovery gas approach 13, waste heat recovery exhaust pass 14, waste heat recovery utilizing equipment 15, waste heat recovery coil pipe 16, fin heat exchange pipe 17, waste heat recovery air-introduced machine 19；Film oxygen enriching equipment is connected with the preheated air pipe 6 of air prewarming device by oxygen-enriched air pipe 5；The air preheat coil pipe 8 of air prewarming device is arranged between chimney 10 bottom of gas furnace 21 and gas furnace 21 top；The waste heat recovery gas approach 13 of flue gas heat recovery equipment and waste heat recovery exhaust pass 14 are sequentially arranged at chimney 10 bottom, install electric butterfly valve 9 in the middle of the waste heat recovery gas approach 13 of chimney 10 and waste heat recovery exhaust pass 14.
The air filter 2 of embrane method low-purity oxygen plant of the present invention is arranged on the entrance of aerator 3, and the outlet of aerator 3 is connected with the entrance of oxygen-enriched membrane component 4；The outlet of oxygen-enriched membrane component 4 is connected with W type vacuum pump 1 entrance, and oxygen-enriched air pipe 5 is arranged on W type vacuum pump 1 and exports.
The cool air inlet 7 of air prewarming device of the present invention is arranged on the entrance of air preheat coil pipe 8, and the outlet of air preheat coil pipe 8 is connected with preheated air pipe 6；Preheated air pipe 6 is connected with centrifugal blower 26 entrance, and centrifugal blower 26 outlet is connected with hot-air house steward 22 entrance.
It is internal that the fin heat exchange pipe 17 of fuel preheating equipment of the present invention is arranged on waste heat recovery utilizing equipment 15, and fin heat exchange pipe 17 one end connects combustion gas 18, and the other end is connected with burner 23 entrance by pipeline.
Waste heat recovery gas approach 13 arrival end of flue gas heat recovery equipment of the present invention is connected with chimney 10, and waste heat recovery gas approach 13 arrival end installs electric butterfly valve 11；Waste heat recovery gas approach 13 port of export is connected with waste heat recovery utilizing equipment 15 entrance, and waste heat recovery utilizing equipment 15 outlet is connected with waste heat recovery air-introduced machine 19 entrance；Waste heat recovery air-introduced machine 19 outlet is connected with waste heat recovery exhaust pass 14 entrance, and waste heat recovery exhaust pass 14 outlet is connected with chimney 10, and installation site is on electric butterfly valve 9 top；Waste heat recovery coil pipe 16, fin heat exchange pipe 17 are mounted in parallel inside waste heat recovery utilizing equipment 15.
Waste heat recovery coil pipe 16 in waste heat recovery utilizing equipment 15 of the present invention is one group of corrosion-resistant coil pipe；Fin heat exchange pipe 17 in waste heat recovery utilizing equipment 15 is one group of corrosion resistance fin heat exchanger tube.
Part not in the detailed description of the invention is prior art.
Claims (6)
1. a Verticle gas hot Media Oven energy saver, including film oxygen enriching equipment, air prewarming device, fuel preheating equipment and flue gas heat recovery equipment, it is characterized in that: film oxygen enriching equipment includes W type vacuum pump (1), air filter (2), aerator (3), oxygen-enriched membrane component (4), oxygen-enriched air pipe (5)；Air prewarming device includes preheated air pipe (6), cool air inlet (7), air preheat coil pipe (8), centrifugal blower (26)；Fuel preheating equipment includes fin heat exchange pipe (17), waste heat recovery utilizing equipment (15)；Flue gas heat recovery equipment includes electric butterfly valve (11), waste heat recovery gas approach (13), waste heat recovery exhaust pass (14), waste heat recovery utilizing equipment (15), waste heat recovery coil pipe (16), fin heat exchange pipe (17), waste heat recovery air-introduced machine (19)；Film oxygen enriching equipment is connected with the preheated air pipe (6) of air prewarming device by oxygen-enriched air pipe (5)；The air preheat coil pipe (8) of air prewarming device is arranged between chimney (10) bottom of gas furnace (21) and gas furnace (21) top；The waste heat recovery gas approach (13) of flue gas heat recovery equipment and waste heat recovery exhaust pass (14) are sequentially arranged at chimney (10) bottom, install electric butterfly valve (9) in the middle of the waste heat recovery gas approach (13) of chimney (10) and waste heat recovery exhaust pass (14).
Verticle gas hot Media Oven energy saver the most according to claim 1, is characterized in that: the air filter (2) of film oxygen enriching equipment is arranged on the entrance of aerator (3), and the outlet of aerator (3) is connected with the entrance of oxygen-enriched membrane component (4)；The outlet of oxygen-enriched membrane component (4) is connected with W type vacuum pump (1) entrance, and oxygen-enriched air pipe (5) is arranged on W type vacuum pump (1) outlet.
Verticle gas hot Media Oven energy saver the most according to claim 1, is characterized in that: the cool air inlet (7) of air prewarming device is arranged on the entrance of air preheat coil pipe (8), and the outlet of air preheat coil pipe (8) is connected with preheated air pipe (6)；Preheated air pipe (6) is connected with centrifugal blower (26) entrance, and centrifugal blower (26) outlet is connected with hot-air house steward (22) entrance.
Verticle gas hot Media Oven energy saver the most according to claim 1, it is characterized in that: it is internal that the fin heat exchange pipe (17) of fuel preheating equipment is arranged on waste heat recovery utilizing equipment (15), fin heat exchange pipe (17) one end connects combustion gas (18), and the other end is connected with burner (23) entrance by pipeline.
Verticle gas hot Media Oven energy saver the most according to claim 1, it is characterized in that: waste heat recovery gas approach (13) arrival end of flue gas heat recovery equipment is connected with chimney (10), waste heat recovery gas approach (13) arrival end installs electric butterfly valve (11)；Waste heat recovery gas approach (13) port of export is connected with waste heat recovery utilizing equipment (15) entrance, and waste heat recovery utilizing equipment (15) outlet is connected with waste heat recovery air-introduced machine (19) entrance；Waste heat recovery air-introduced machine (19) outlet is connected with waste heat recovery exhaust pass (14) entrance, and waste heat recovery exhaust pass (14) outlet is connected with chimney (10), and installation site is on electric butterfly valve (9) top；Waste heat recovery coil pipe (16), fin heat exchange pipe (17) are mounted in parallel at waste heat recovery utilizing equipment (15) internal.
Verticle gas hot Media Oven energy saver the most according to claim 1, is characterized in that: the waste heat recovery coil pipe (16) in waste heat recovery utilizing equipment (15) is one group of corrosion-resistant coil pipe, or the corrosion-resistant coil pipe of many groups；Fin heat exchange pipe (17) in waste heat recovery utilizing equipment (15) is one group of corrosion resistance fin heat exchanger tube, or many group corrosion resistance fin heat exchanger tubes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610473931.2A CN105953409A (en) | 2016-06-27 | 2016-06-27 | Vertical energy saving device for fuel gas heating medium furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473931.2A CN105953409A (en) | 2016-06-27 | 2016-06-27 | Vertical energy saving device for fuel gas heating medium furnace |
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| CN201610473931.2A Pending CN105953409A (en) | 2016-06-27 | 2016-06-27 | Vertical energy saving device for fuel gas heating medium furnace |
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| CN109140427A (en) * | 2018-09-30 | 2019-01-04 | 西安鑫顶天装备智能科技有限公司 | A kind of combustion gas fission device |
| CN111197858A (en) * | 2018-11-20 | 2020-05-26 | 宁波方太厨具有限公司 | Dual-purpose furnace with expansion water tank automatic pressure compensating device |
| CN111271872A (en) * | 2018-12-04 | 2020-06-12 | 宁波方太厨具有限公司 | Low-nitrogen gas dual-purpose stove |
| CN112284147A (en) * | 2020-10-29 | 2021-01-29 | 重庆迅华环境技术有限公司 | High-temperature preheating type oxygen-enriched combustion energy-saving emission-reducing system of sand regenerating furnace for casting |
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| CN111197858A (en) * | 2018-11-20 | 2020-05-26 | 宁波方太厨具有限公司 | Dual-purpose furnace with expansion water tank automatic pressure compensating device |
| CN111271872A (en) * | 2018-12-04 | 2020-06-12 | 宁波方太厨具有限公司 | Low-nitrogen gas dual-purpose stove |
| CN112284147A (en) * | 2020-10-29 | 2021-01-29 | 重庆迅华环境技术有限公司 | High-temperature preheating type oxygen-enriched combustion energy-saving emission-reducing system of sand regenerating furnace for casting |
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Application publication date: 20160921 |