CN205957141U - System of fan heater and low low -level (stack -gas) economizer coupling based on fluoroplastics heat exchanger - Google Patents

System of fan heater and low low -level (stack -gas) economizer coupling based on fluoroplastics heat exchanger Download PDF

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CN205957141U
CN205957141U CN201620843320.8U CN201620843320U CN205957141U CN 205957141 U CN205957141 U CN 205957141U CN 201620843320 U CN201620843320 U CN 201620843320U CN 205957141 U CN205957141 U CN 205957141U
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gas
heat exchanger
economizer
stack
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宁玉琴
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HANGZHOU HUADIAN ENERGY ENGINEERING Co Ltd
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HANGZHOU HUADIAN ENERGY ENGINEERING Co Ltd
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Abstract

The utility model relates to a system of fan heater and low low -level (stack -gas) economizer coupling based on fluoroplastics heat exchanger. Still do not have an ability to carry out efficient handling of to the boiler flue gas at present, reduce this type of technique of exhaust gas temperature, heating low pressure feed water heater part condensate water. The utility model discloses the characteristics of energy -concerving and environment -protective integrated system are: including fan heater, condenser, #1 lowly add, #2 lowly adds, #3 lowly adds, #4 is low adds and the oxygen -eliminating device, the flue gas entry of low low -level (stack -gas) economizer and exhanst gas outlet pass through the flue respectively with air heater's exhanst gas outlet and electrostatic precipitator's flue gas entry linkage, the condensate water entry of low low -level (stack -gas) economizer hangs down the condensate water exit linkage that adds with low condensate water entry that adds of #1 and #2 respectively through condensate pipeline, and the condensate water export is through the low condensate water exit linkage that adds of condensate pipeline and #4. The utility model discloses can carry out efficient handling of to the boiler flue gas, reduce exhaust gas temperature, heating low pressure feed water heater part condensate water, reach energy -conserving effect.

Description

The system that steam air heater based on teflon heat exchanger is coupled with low low-level (stack-gas) economizer
Technical field
The utility model is related to the system that a kind of steam air heater based on teflon heat exchanger is coupled with low low-level (stack-gas) economizer, main It is used for coal-fired power station boiler field, being capable of Mist heat recovering and minimizing station boiler pollutant emission.
Background technology
Many reasons such as domestic a lot of coal-fired power station boiler is due to manufacturing and designing, the change of combustion adjustment, coal, lead to boiler Exhaust gas temperature substantial deviation design load, is approximately higher than 20 DEG C -50 DEG C of design load.Exhaust gas temperature is higher to lead to heat loss due to exhaust gas to increase Plus, boiler efficiency reduces, thus directly affecting thermal power unit operation economy, is unfavorable for energy-conservation.Exhaust gas temperature raises, and also can draw Playing fly ash resistivity and exhaust gas volumn increases, thus reducing the efficiency of dust collection of electric cleaner, being unfavorable for environmental protection.
In the winter time during operating mode, first and second air temperature of air preheater entrance is relatively low, easily causes air preheater low temperature Section corrosion, especially now domestic a lot of units have all carried out denitration transformation, too low first and second air temperature, easily cause sky The ammonium hydrogen sulfate blocking of air preheater low-temperature zone.
For overcoming the problems referred to above, occur in that low temperature electrostatic precipitation technology and steam air heater technology both at home and abroad.
Low temperature electrostatic precipitation technology is to arrange one-level fume afterheat in flue between air preheater and electric cleaner Retracting device, the flue-gas temperature before deduster is dropped to below flue gas acid dew point or acid dew point, and the fume afterheat of recovery is used for adding Heat setting bears water.Although low temperature electric precipitation can improve efficiency of dust collection, reduce pollutant emission, air preheater cannot be solved The corrosion of low-temperature zone and blockage problem.In the Chinese patent of Publication No. CN103363536, disclose a kind of thermal power plant System with low-low temperature ESP, electric cleaner inlet flue gas are reduced to flue gas acid dew point or are less than cigarette by this system with low-low temperature ESP Gas acid dew point, the fume afterheat of recovery is used for heating the condensate of low-pressure heater, thus improving unit economy, reaches energy-conservation Effect, but but fail to solve the corrosion of air preheater low-temperature zone and blockage problem.
Conventional steam air heater technology is using steam as thermal source, using the latent heat of vaporization of steam, heats air preheater entrance First and second cold wind, because conventional steam air heater needs to consume some vapor, affect unit economy, and steam type steam air heater exist Easily operation problem in hydrophobic side, therefore occurs in that the air-supply heating system by the use of fume afterheat as steam air heater thermal source both at home and abroad In the Chinese patent of system, such as Publication No. CN104930496, disclose a kind of low low-level (stack-gas) economizer of coal unit combine air-supply plus Hot depth residual neat recovering system, this system installs low low-level (stack-gas) economizer high temperature section in flue before electrostatic precipitator, in air-introduced machine It is exported in desulfurizing tower gas approach and low low-level (stack-gas) economizer low-temperature zone, low low-level (stack-gas) economizer high temperature section and condenser condensed water are installed Pipeline connect, low low-level (stack-gas) economizer low-temperature zone by low low-level (stack-gas) economizer low-temperature zone outlet conduit respectively with First air steam air heater and Secondary Air steam air heater is connected in parallel, the outlet conduit of First air steam air heater and Secondary Air steam air heater and low low-level (stack-gas) economizer low-temperature zone The connection of low low-level (stack-gas) economizer low-temperature zone water return pipeline, desulfurizing tower inlet flue gas temperature depth can be reduced to 50 DEG C about, obtain While benefit of saving coal, reduce desulfurizing tower water consumption, greatly improve power plant's overall operation benefit, but this system low temperature saves coal Before device low-temperature zone is arranged on desulfurizing tower, temperature is reduced to 50 DEG C about, and the requirement for anticorrosion to metal material is very high, thus raising The cost of investment of heat transmission equipment, and cannot fundamentally avoid the cold end corrosion problem of low low-level (stack-gas) economizer low-temperature zone.
In sum, there is presently no one kind boiler smoke can be efficiently treated through, reduction exhaust gas temperature, heating are low Pressure heater section condensate, reaches energy-saving effect;Improve efficiency of dust collection, reduce pollutant emission;Solve air preheater low Temperature section corrosion and blocking;Avoid the energy-conserving and environment-protective that the steam air heater of cold end corrosion of heat transmission equipment is coupled with low low-level (stack-gas) economizer simultaneously Integral system and method.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency present in prior art, and provides a kind of structure design to close Reason, can be efficiently treated through to boiler smoke, reduce exhaust gas temperature, heating low-pressure heater partial coagulation water, reach energy-conservation Effect;Improve efficiency of dust collection, reduce pollutant emission;Solve the corrosion of air preheater low-temperature zone and block;Avoid heat exchange simultaneously The system that the steam air heater based on teflon heat exchanger of the cold end corrosion of equipment is coupled with low low-level (stack-gas) economizer.
The technical scheme in the invention for solving the above technical problem is:Should steam air heater based on teflon heat exchanger with Air preheater that the system of low low-level (stack-gas) economizer coupling includes being arranged in order along flow of flue gas direction, low low-level (stack-gas) economizer, electricity Deduster, air-introduced machine, teflon heat exchanger, desulfurizing tower and chimney, its design feature is:Also include steam air heater, condenser, #1 Low plus, #2 low plus, #3 low plus, #4 low plus and oxygen-eliminating device, the smoke inlet of described low low-level (stack-gas) economizer and exhanst gas outlet pass through cigarette Road is connected with the exhanst gas outlet of air preheater and the smoke inlet of electric cleaner respectively, the condensate of described low low-level (stack-gas) economizer Entrance passes through condensing water conduit, and the condensation water inlet that add low with #1 and the low condensation water out adding of #2 are connected respectively, and this low temperature saves The water out that condenses of coal device is connected by the condensing water conduit condensation water out adding low with #4, the exhanst gas outlet of described electric cleaner Smoke inlet connection, the smoke inlet of described teflon heat exchanger and the exhanst gas outlet flue gas with air-introduced machine respectively with air-introduced machine The smoke inlet of outlet and desulfurizing tower connects, and the heating agent water inlet of this teflon heat exchanger and heating agent water out pass through heating agent water pipe Road is connected with the heating agent water out of steam air heater and heating agent water inlet respectively, and the exhanst gas outlet of described desulfurizing tower and chimney connect, institute The shell-side stating steam air heater is connected with first cooling by wind air channel and second wind cooling air channel, and this steam air heater and air preheater connect.
Preferably, low low-level (stack-gas) economizer described in the utility model is H type fin tubular type air-water heat exchanger, this low temperature saves Coal device adopts modularized design, and high temperature root module adopts 20# steel matter, and low temperature root module adopts ND steel matter, described low temperature Economizer Main Function is to reclaim the condensate that a large amount of fume afterheats heat low add-back hot systems, thus instead of partly low adding Draw gas, make to draw gas and can continue to return steam turbine acting, improve Unit Economic benefit, the booster action of this low low-level (stack-gas) economizer exists In the smoke inlet cigarette temperature reducing electric cleaner, thus reducing dust specific resistance, improve the efficiency of dust collection of electric cleaner.
Preferably, teflon heat exchanger described in the utility model is U-shaped light pipe type heat exchanger, this teflon heat exchanger is pacified After being contained in electric cleaner, before desulfurizing tower, effect is the fume afterheat before Absorption Desulfurization tower, and heat is followed by enclosed Ring Water transport to the First air of steam air heater shell-side and Secondary Air, to improve the cold wind temperature of air inlet preheater, pre- air-prevention Corrosion and blocking that preheater is caused due to low temperature.
Preferably, steam air heater described in the utility model is air-water heat exchanger, using 20# steel matter, this steam air heater is installed In First air and second wind cooling air channel, effect is the First air to air inlet pre-heater inlet and Secondary Air carry out pre- Heat, to improve the cold wind temperature of air inlet preheater, corrosion and blocking that prevention air preheater is caused due to low temperature.
Preferably, teflon heat exchanger described in the utility model adopts fluoroplastics as heat exchange material, there is not burn into Non-sticky ash and the little fluoroplastics material of density, are mitigated weight of equipment, reduce equipment flue gas resistance and are improved making of equipment with effective Use the life-span;Due to the excellent antiseptic property of fluoroplastics, desulfurizing tower inlet flue gas temperature can be reduced to holding desulfurizing tower isorrheic Minimum flue-gas temperature, greatly reduces the injection flow rate of desulfurizing tower;After this teflon heat exchanger is necessarily mounted at electric cleaner, because Its anti-wear performance is not so good as metal;Described teflon heat exchanger must be hung vertically on horizontal flue, is absorbed because of temperature with effective Change the thermal deformation causing.
A kind of steam air heater based on teflon heat exchanger being carried out using described energy-conserving and environment-protective integral system with low The energy-conserving and environment-protective integral method of warm economizer coupling, its feature is:The step of described energy-conserving and environment-protective integral method is as follows:
It is cooled to 90 DEG C or 90 DEG C about from air preheater high-temperature flue gas out by low low-level (stack-gas) economizer, from low add-back The condensing water temperature that hot systems extraction two-way condensate merges into is 70 DEG C or 70 DEG C about, for Mist heat recovering, absorbs heat Condensing water temperature afterwards is increased to more than 100 DEG C, more again leads back low adding system, has squeezed partly low plus draw gas, and making to draw gas can Continue to return steam turbine acting, improve Unit Economic benefit;
It is cooled in 90 DEG C or 90 DEG C about of cooled flue gas by low low-level (stack-gas) economizer, SO3It is combined into sulfuric acid with vapor Steam, forms sulfuric acid droplets after sulfuric acid vapor condensation and adsorbs on fly ash granule, and enter electric cleaner quilt with fly ash granule Removing, thus avoid the cold end corrosion problem of upstream device;Meanwhile, electric cleaner entrance flue gas temperature is cooled to 90 DEG C or 90 DEG C about after, the efficiency of dust collection of dust specific resistance and electric precipitation is greatly improved, reduces dust emission;
Flue gas after air-introduced machine has 5 DEG C or 5 DEG C about of a temperature rise, thus the flue-gas temperature of air-introduced machine outlet be 95 DEG C or 95 DEG C about, after teflon heat exchanger, cigarette temperature is reduced on the minimum flue-gas temperature maintaining desulfurizing tower level, this part Flue gas heat by closed cycle Water transport to steam air heater side first and second cold wind, the closed cycle water of teflon heat exchanger entrance Temperature is more than 55 DEG C, is entered steam air heater by flue gas afterwards to more than 70 DEG C, transfer heat in teflon heat exchanger First and second cold wind, can improve first and second cold wind temperature to more than 50 DEG C, effectively prevent air preheater to draw due to low temperature The corrosion rising and blocking, meanwhile, after the flue-gas temperature of desulfurizing tower entrance reduces, have saved the injection flow rate of desulfurizing tower;
Due to the primary and secondary air temperature rise of air preheater entrance, air preheater exhaust gas temperature is led to raise, this part Fume afterheat equally can be absorbed by low low-level (stack-gas) economizer and pass to low pressure condensation water.
The utility model compared with prior art, has advantages below and effect:1st, using low low-level (stack-gas) economizer, electricity is removed Dirt device inlet flue gas temperature is reduced to 90 DEG C about, fume afterheat is heated the condensate of low adding system, can squeeze low plus draw gas, carry High Unit Economic efficiency, reduces unit generation coal consumption.2nd, before low low-level (stack-gas) economizer is arranged on electric cleaner, flue-gas temperature is dropped To acid dew point, most of SO in flue gas can be removed3, and improve ESP Efficiency, reduce pollutant emission. The 3rd, one-level teflon heat exchanger is installed before desulfurizing tower, using teflon heat exchanger further depth Mist heat recovering, permissible Avoid the generation of heat exchanger cold end corrosion phenomenon completely.4th, the fume afterheat that teflon heat exchanger reclaims is passed through closed cycle water Pass to first and second cold wind of air preheater entrance, can be with the corrosion of effectively solving air preheater low-temperature zone and blocking.5、 Steam air heater based on teflon heat exchanger can realize the integrated effect of energy-saving and emission-reduction with the system that low low-level (stack-gas) economizer couples, with When solve air preheater low-temperature zone corrosion and blockage problem.6th, the steam air heater based on teflon heat exchanger is saved coal with low temperature Device is organically coupled, and has good coupling effect, and structure is simple, reasonable in design, and design is unique, easy to use, city Field has a extensive future.
Brief description
Fig. 1 is that in the utility model embodiment, the steam air heater based on teflon heat exchanger is with low low-level (stack-gas) economizer couples The structural representation of system.
In figure:The low low-level (stack-gas) economizer of 1- air preheater, 2-, 3- electric cleaner, 4- air-introduced machine, 5- teflon heat exchanger, 6- desulfurizing tower, 7- chimney, 8- steam air heater, 9- condenser, 10-#1 low plus, 11-#2 low plus, 12-#3 low plus, 13-#4 low plus, 14- Oxygen-eliminating device.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following examples are right Of the present utility model explain and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1, the system bag that in the present embodiment, the steam air heater based on teflon heat exchanger is coupled with low low-level (stack-gas) economizer Include air preheater 1, low low-level (stack-gas) economizer 2, electric cleaner 3, air-introduced machine 4, teflon heat exchanger 5, desulfurizing tower 6, chimney 7, warm up Wind device 8, condenser 9, #1 be low Jia 10, #2 low Jia 11, #3 low Jia 12, #4 is low Jia 13 and oxygen-eliminating device 14.
Air preheater 1 in the present embodiment, low low-level (stack-gas) economizer 2, electric cleaner 3, air-introduced machine 4, teflon heat exchanger 5th, desulfurizing tower 6 and chimney 7 are arranged in order along flow of flue gas direction, and the smoke inlet of low low-level (stack-gas) economizer 2 and exhanst gas outlet pass through Flue is connected with the exhanst gas outlet of air preheater 1 and the smoke inlet of electric cleaner 3 respectively, the condensation of low low-level (stack-gas) economizer 2 Water inlet passes through condensing water conduit, and the condensation water inlet of Jia 10 low with #1 and the low condensation water out Jia 11 of #2 are connected respectively, and this is low The water out that condenses of low-level (stack-gas) economizer 2 is connected by the condensing water conduit condensation water out Jia 13 low with #4, the cigarette of electric cleaner 3 The smoke inlet of gas outlet and air-introduced machine 4 connects, the smoke inlet of teflon heat exchanger 5 and exhanst gas outlet respectively with air-introduced machine 4 Exhanst gas outlet and the smoke inlet of desulfurizing tower 6 connect, the heating agent water inlet of this teflon heat exchanger 5 and heating agent water out pass through Heating agent waterpipe is connected with the heating agent water out of steam air heater 8 and heating agent water inlet respectively, the exhanst gas outlet of desulfurizing tower 6 and chimney 7 Connect, the shell-side of steam air heater 8 is connected with first cooling by wind air channel and second wind cooling air channel, this steam air heater 8 and air preheater 1 are even Connect.
Low low-level (stack-gas) economizer 2 in the present embodiment is H type fin tubular type air-water heat exchanger, and this low low-level (stack-gas) economizer 2 adopts Modularized design, high temperature root module adopts 20# steel matter, and low temperature root module adopts ND steel matter, and low low-level (stack-gas) economizer 2 is mainly made With being to reclaim the condensate that a large amount of fume afterheats heat low add-back hot systems, thus instead of partly low plus drawing gas, make to draw gas Can continue to return steam turbine acting, improve Unit Economic benefit, the booster action of this low low-level (stack-gas) economizer 2 is that reducing electricity removes The smoke inlet cigarette temperature of dirt device 3, thus reducing dust specific resistance, improves the efficiency of dust collection of electric cleaner 3.
Teflon heat exchanger 5 in the present embodiment is U-shaped light pipe type heat exchanger, and this teflon heat exchanger 5 is arranged on electricity and removes After dirt device 3, before desulfurizing tower 6, effect is the fume afterheat before Absorption Desulfurization tower 6, and heat is passed through closed cycle water Pass to First air and the Secondary Air of steam air heater 8 shell-side, to improve the cold wind temperature of air inlet preheater 1, pre- air-prevention is pre- Corrosion and blocking that hot device 1 is caused due to low temperature.
Steam air heater 8 in the present embodiment be air-water heat exchanger, using 20# steel matter, this steam air heater 8 be arranged on First air and In second wind cooling air channel, effect be the First air of air inlet preheater 1 entrance and Secondary Air are preheated, with improve into Enter the cold wind temperature of air preheater 1, corrosion and blocking that prevention air preheater 1 is caused due to low temperature.
Teflon heat exchanger 5 in the present embodiment adopts fluoroplastics as heat exchange material, has not burn into non-sticky grey and close Spend little fluoroplastics material, with effective service life mitigating weight of equipment, reducing equipment flue gas resistance and improve equipment;Due to Desulfurizing tower 6 inlet flue gas temperature can be reduced to the holding isorrheic minimum flue gas temperature of desulfurizing tower 6 by the excellent antiseptic property of fluoroplastics Degree, greatly reduces the injection flow rate of desulfurizing tower 6;After this teflon heat exchanger 5 is necessarily mounted at electric cleaner 3, because it is wear-resisting Performance is not so good as metal;Teflon heat exchanger 5 must be hung vertically on horizontal flue, is caused because of temperature change with effective absorb Thermal deformation.
In the present embodiment, the steam air heater based on teflon heat exchanger is integrated with the energy-conserving and environment-protective that low low-level (stack-gas) economizer couples The step of method is as follows:
It is cooled to 90 DEG C about from air preheater 1 high-temperature flue gas out by low low-level (stack-gas) economizer 2, from low add-back heat system The condensing water temperature that system extraction two-way condensate merges into is 70 DEG C about, for Mist heat recovering, the condensate after heat absorption Temperature is increased to more than 100 DEG C, more again leads back low adding system, has squeezed partly low plus has drawn gas, and makes to draw gas and can continue to return vapour Turbine does work, and improves Unit Economic benefit;
It is cooled in 90 DEG C about of cooled flue gas by low low-level (stack-gas) economizer 2, SO3It is combined into sulfuric acid vapor with vapor, Form sulfuric acid droplets after sulfuric acid vapor condensation to adsorb on fly ash granule, and enter electric cleaner 3 with fly ash granule and be removed, Thus avoiding the cold end corrosion problem of upstream device;Meanwhile, after electric cleaner 3 entrance flue gas temperature is cooled to 90 DEG C about, The efficiency of dust collection of dust specific resistance and electric precipitation is greatly improved, reduces dust emission;
The temperature rise that about 5 DEG C of flue gas after air-introduced machine 4, therefore the flue-gas temperature of air-introduced machine 4 outlet is 95 DEG C about, After teflon heat exchanger 5, cigarette temperature is reduced on the minimum flue-gas temperature maintaining desulfurizing tower 6 level, this partial fume heat Amount by closed cycle Water transport to steam air heater 8 side first and second cold wind, the closed cycle coolant-temperature gage of teflon heat exchanger 5 entrance For more than 55 DEG C, in teflon heat exchanger 5, entered steam air heater 8 by flue gas afterwards to more than 70 DEG C, transfer heat to one, Secondary cold wind, can improve first and second cold wind temperature to more than 50 DEG C, effectively prevent air preheater 1 to cause due to low temperature Corrosion and blocking, meanwhile, after the flue-gas temperature of desulfurizing tower 6 entrance reduces, saved the injection flow rate of desulfurizing tower 6;
Due to the primary and secondary air temperature rise of air preheater 1 entrance, air preheater 1 exhaust gas temperature is led to raise, this portion Divide fume afterheat equally can be absorbed by low low-level (stack-gas) economizer 2 and pass to low pressure condensation water.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components, it is named Title etc. can be different, and the above content described in this specification is only to the utility model structure example explanation. Equivalence changes or simple change that construction described in all foundation the utility model inventional idea, feature and principle are done, all wrap Include in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can be to described Specific embodiment is made various modifications or supplements or substituted using similar mode, without departing from knot of the present utility model Structure or surmount scope defined in the claims, all should belong to protection domain of the present utility model.

Claims (5)

1. the system that a kind of steam air heater based on teflon heat exchanger is coupled with low low-level (stack-gas) economizer, including along flow of flue gas direction Air preheater, low low-level (stack-gas) economizer, electric cleaner, air-introduced machine, teflon heat exchanger, desulfurizing tower and the chimney being arranged in order, It is characterized in that:Also include steam air heater, condenser, #1 low plus, #2 low plus, #3 low plus, #4 low plus and oxygen-eliminating device, described low temperature The smoke inlet of economizer and exhanst gas outlet pass through flue respectively with the exhanst gas outlet of air preheater and the flue gas of electric cleaner Entrance connects, and the water inlet that condenses of described low low-level (stack-gas) economizer passes through the condensing water conduit condensation water inlet that add low with #1 respectively Low with #2 plus condensation water out connect, this low low-level (stack-gas) economizer condense water out pass through condensing water conduit and #4 low plus solidifying Bear water outlet to connect, the smoke inlet of the exhanst gas outlet of described electric cleaner and air-introduced machine connects, described teflon heat exchanger Smoke inlet and exhanst gas outlet are connected with the exhanst gas outlet of air-introduced machine and the smoke inlet of desulfurizing tower respectively, this teflon heat exchanger Heating agent water inlet and heating agent water out pass through heating agent waterpipe respectively with the heating agent water out of steam air heater and heating agent water inlet even Connect, the exhanst gas outlet of described desulfurizing tower and chimney connect, the shell-side of described steam air heater and first cooling by wind air channel and Secondary Air cold wind Road connects, and this steam air heater and air preheater connect.
2. the system that the steam air heater based on teflon heat exchanger according to claim 1 is coupled with low low-level (stack-gas) economizer, its It is characterised by:Described low low-level (stack-gas) economizer is H type fin tubular type air-water heat exchanger, and this low low-level (stack-gas) economizer is set using modularization Meter, high temperature root module adopts 20# steel matter, and low temperature root module adopts ND steel matter.
3. the system that the steam air heater based on teflon heat exchanger according to claim 1 is coupled with low low-level (stack-gas) economizer, its It is characterised by:Described teflon heat exchanger is U-shaped light pipe type heat exchanger.
4. the system that the steam air heater based on teflon heat exchanger according to claim 1 is coupled with low low-level (stack-gas) economizer, its It is characterised by:Described steam air heater is air-water heat exchanger, and using 20# steel matter, this steam air heater is arranged on First air and second wind cooling In air channel.
5. the system that the steam air heater based on teflon heat exchanger according to claim 1 is coupled with low low-level (stack-gas) economizer, its It is characterised by:Described teflon heat exchanger adopts fluoroplastics as heat exchange material, and this teflon heat exchanger is necessarily mounted at electricity and removes After dirt device, described teflon heat exchanger must be hung vertically on horizontal flue.
CN201620843320.8U 2016-08-05 2016-08-05 System of fan heater and low low -level (stack -gas) economizer coupling based on fluoroplastics heat exchanger Active CN205957141U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678771A (en) * 2016-08-05 2017-05-17 杭州华电能源工程有限公司 Air heater and low-low temperature economizer coupled energy-saving and environmental-friendly integrated system and method based on fluoroplastic heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678771A (en) * 2016-08-05 2017-05-17 杭州华电能源工程有限公司 Air heater and low-low temperature economizer coupled energy-saving and environmental-friendly integrated system and method based on fluoroplastic heat exchanger

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Inventor after: Ning Yuqin

Inventor after: Hu Qing

Inventor after: Sun Shaopeng

Inventor after: Deng Hua

Inventor after: Zhu Wenzhong

Inventor after: Wang Xiaoxia

Inventor after: Hu Yue

Inventor before: Ning Yuqin

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