CN208222484U - A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device - Google Patents

A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device Download PDF

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Publication number
CN208222484U
CN208222484U CN201820480873.0U CN201820480873U CN208222484U CN 208222484 U CN208222484 U CN 208222484U CN 201820480873 U CN201820480873 U CN 201820480873U CN 208222484 U CN208222484 U CN 208222484U
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CN
China
Prior art keywords
low
back pressure
gas
air
pressure turbine
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Expired - Fee Related
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CN201820480873.0U
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Chinese (zh)
Inventor
毛双华
林国辉
王浩添
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Zhejiang Ju Hua Thermal Power Co Ltd
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Zhejiang Ju Hua Thermal Power Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The utility model discloses a kind of pair to drag electric pump back pressure turbine comprehensive utilization device, including feed pump, back pressure turbine, timing gear roller box, generator, warm pocket, pressure fan, air preheater, boiler, bag filter, air-introduced machine, low low-level (stack-gas) economizer, oxygen-eliminating device, desulfurizing tower, chimney.The utility model is structurally reasonable, using back pressure turbine steam discharge as warm pocket gas source, solves the problems, such as the stifled ash of boiler air preheater low-temperature corrosion, and the use of low low-level (stack-gas) economizer solves the problems, such as warm empty bring high fume temperature, warm pocket is hydrophobic is again introduced into boiler system further through low low-level (stack-gas) economizer, substantially increases generatine set heat efficiency and resource utilization.

Description

A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device
Technical field
The utility model relates to cogeneration units high efficient energy sources to utilize, energy-conserving and emission-cutting technology field, and in particular to a kind of It is double to drag electric pump back pressure turbine comprehensive utilization device.
Background technique
Coal fired thermal power plant is the main enterprises of China's power generation, has 78% electricity from Coal-fired Thermal Power in national electricity consumption Factory.AND ENERGY RESOURCES CONSUMPTION IN CHINA will exploit the non-renewable energy of nearly 2,000,000,000 tons of standard coals based on coal every year, convert into RMB about 1 The industrial output value of trillion yuan, wherein nearly half is burnt up by power plant boiler.Therefore, coal-burning power plant advocates section comprehensively at this stage It can be transformed, coal consumption for power generation is greatly reduced and improve energy utilization rate, energy-saving and emission-reduction reach power industry with this and clean, efficiently Change development.
Power plant watering cycle can use feed pump, and power plant generally uses Steam Turbine Driven feed pump, i.e. steam turbine at present Axis one end drive feed pump, master be to solve the power-consuming problem of feed pump.For relatively economical performance, more more options Back pressure turbine is as feed-water pump turbine.But in order to meet unit in summer long period oepration at full load, back pressure turbine Nominal output it is usually bigger than the nominal output of feed pump, therefore the nominal output of steam turbine has a larger allowance, generally 20% with On.In addition, the steam exhaust temperature of steam turbine is higher in power station, generally access condenser, but feed pump turbine steam exhaust pressure one As be higher than condenser pressure, when actual motion, manufactured and designed by feed pump turbine and mounting process level limited, especially given When water pump operation performance is poor, this difference is bigger, on the one hand causes wasting for feed pump turbine exhaust steam residual heat, another Aspect also makes condenser duty higher, influences unit vacuum, and unit net coal consumption rate increases.More than this sub-load allowance and steam exhaust Heat cannot such as make full use of, and will lead to equipment and energy utilization rate is low, deficiency in economic performance.Therefore, how this portion of recycling and reusing Divide load margin and exhaust steam residual heat, is that those skilled in the art need urgently to solve the problems, such as.
As Chinese patent Authorization Notice No. CN204002945U discloses a kind of feed pump small turbine Driven by Coaxial power generation Device.Described device includes: feed pump, small turbine, constant rotational speed output gear case and generator;The feed pump and described Small turbine is connected;The input terminal of the constant rotational speed output gear case is connected with the small turbine;The generator Connect the output end of the constant rotational speed output gear case.The feed pump small turbine Driven by Coaxial power generator, can be realized Effective use to the small turbine extra margin (load) can effectively avoid driving the process of feed pump in small turbine In caused by load waste the problem of.Shortcoming is that the exhaust steam residual heat of steam turbine is not utilized effectively.
For another example Chinese patent Authorization Notice No. CN206160094U discloses a kind of feed pump turbine exhaust steam residual heat utilization System, including steam jet ejector, intermediate pressure cylinder, low-pressure heater and forward type heat exchangers for district heating, the steam jet pressure The first entrance of contracting device is connected with feed pump turbine, the second entrance of the steam jet ejector and the row of medium pressure cylinder Vapour end is connected, and another exhaust steam end of medium pressure cylinder is connected with heat exchangers for district heating shell-side, the outlet of the steam jet ejector It is connected with the shell-side of forward type heat exchangers for district heating, the outlet of the steam jet ejector is also connected with low-pressure heater, described Steam jet ejector aspirates the steam exhaust of feed pump turbine using the part steam discharge steam extraction of intermediate pressure cylinder as driving vapour source, will The relatively high intermediate pressure cylinder steam discharge of temperature, pressure carries out temperature, pressure with the relatively low feed pump turbine steam exhaust of temperature, pressure Power matching, and the steam after matching is used for low-pressure heater and forward type heat exchangers for district heating.Shortcoming is exhaust steam residual heat Utilization rate is not high, and the load margin of steam turbine is not utilized effectively.
In addition, boiler air preheater enters the combustion air in furnace using the smoke discharging residual heat preheating of boiler, it can not only Improve the thermal efficiency of boiler, moreover it is possible to mitigate the pollution to environment.SO is generated after sulphur content burning in fuel2And SO3, and and flue gas In steam interaction, generate sulfuric acid vapor.When heated surface at the end of boiler wall temperature is lower than flue gas acid dew point, just moisture condensation cohesion In on the wall surface, since liquid sulfuric acid corrosivity is strong, the metal erosion of low temperature heating surface, frequently referred to boiler low-temperature heating surface are caused Corrosion.Boiler is easiest to along the final stage air preheater of flue gas flow direction by low-temperature corrosion.While low-temperature corrosion occurs, Incident is exactly the dust stratification of air preheater, they mutually promote, and forms vicious circle, destroys the normal operation of boiler. The low-temperature corrosion of heated surface at the end of boiler influences station boiler economy and normal work very big, it is necessary to take measures to prevent low Temperature corrosion and dust stratification.The common approach is that adding warm pocket, being heated using steam, shortcoming is waste vast resources, Increase energy consumption.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of structurally reasonable, energy utilization rate height, peace The double of loopful guarantor drag electric pump back pressure turbine comprehensive utilization device.
One kind that in order to achieve the above purposes, the technical solution adopted by the utility model is: is double to drag electric pump back pressure turbine comprehensive Utilize device, including feed pump, back pressure turbine, timing gear roller box, generator, warm pocket, pressure fan, air preheater, boiler, cloth Bag dust collector, air-introduced machine, low low-level (stack-gas) economizer, oxygen-eliminating device, desulfurizing tower, chimney, the first output shaft of the back pressure turbine with The input shaft of the feed pump is connected, the second output shaft and the input shaft phase of the timing gear roller box of the back pressure turbine Even, the output shaft of the timing gear roller box is connected with the input shaft of the generator, the steam drain of the back pressure turbine and institute The steam inlet for stating warm pocket is connected, and the water outlet of the warm pocket is connected with the desalination water inlet of the low low-level (stack-gas) economizer, The desalination water out of the low low-level (stack-gas) economizer is connect with the desalination water inlet of the oxygen-eliminating device, and the demineralized water of the oxygen-eliminating device goes out Mouth is connected with the desalination water inlet of the feed pump, and the desalination water out of the feed pump and the desalination water inlet of the boiler connect It connects, the air outlet of the pressure fan is connected with the air inlet of the warm pocket, the air outlet and the air preheater of the warm pocket Air inlet be connected, the air outlet of the air preheater is connected with the air inlet of the boiler, the exhaust pass of the boiler and institute The gas inlet connection of air preheater is stated, the exhanst gas outlet of the air preheater is connected with the gas inlet of the bag filter, institute The exhanst gas outlet for stating bag filter is connected with the import of the air-introduced machine, and the outlet of the air-introduced machine and the low temperature save coal The gas inlet of device is connected, and the exhanst gas outlet of the low low-level (stack-gas) economizer is connected with the import of the desulfurizing tower, the desulfurizing tower Outlet connect with the import of the chimney.
As preferred embodiments of the present invention, the back pressure turbine is additionally provided with steam inlet pipe, the steaming It is provided on vapor inlet pipe into steam control valve, accurately to control steam flow.
As preferred embodiments of the present invention, the low low-level (stack-gas) economizer preferably includes at least one set of U-shaped heat exchange Pipe.
In order to reduce low-temperature corrosion and equipment attrition, device security is improved, it is described in the utility model U-shaped to change Heat pipe material is preferably PTFE.
To the resistance of boiler smoke flowing when in order to reduce warm air system maintenance, energy conservation and consumption reduction effects are further increased, are made For preferred embodiments of the present invention, the warm pocket is preferably that drawable type warms up pocket.
The double of the utility model drag electric pump back pressure turbine comprehensive utilization device, in order to overcome warm pocket to improve boiler smoke Gas exhaust gas temperature reduces the deficiency of generatine set heat efficiency, and low low-level (stack-gas) economizer, low low temperature are arranged between air-introduced machine and desulfurizing tower The application of economizer is not only utilized by condensing boiler smoke temperature hydrophobic, and that warm pocket is raised after warm pocket heating air It significantly reduces, Mist heat recovering, improves desalination coolant-temperature gage, enhance boiler overall utilization rate.The utility model overcomes low Warm economizer by boiler smoke temperature drop it is low after, the problem of leading to desulfurizing tower disrupted water balance, saves coal so as to avoid low temperature is reduced Device uses the defect of flow.Pocket is warmed up in the utility model and the cooperation of low low-level (stack-gas) economizer not only solves high fume temperature Problem also improves the utilization efficiency of low low-level (stack-gas) economizer.The double of the utility model drag electric pump back pressure turbine comprehensive utilization dress It sets, greatly reduces energy loss, improve equipment and energy utilization rate, increase economic benefit.
Double actings for dragging electric pump back pressure turbine comprehensive utilization device that can give full play to back pressure turbine of the utility model Ability, steam discharge can be used for boiler air preheater and warm pocket gas source, not only improve utilization rate of equipment and installations, but also solve air preheater low temperature The problem of ash is blocked up in corrosion.
Compared with prior art, the utility model has the advantages that
1, the utility model improves the utilization efficiency of back pressure turbine to greatest extent, not only double using back pressure turbine Feed pump and generator are dragged, and low using the stifled ash of its steam discharge solution boiler air preheater low-temperature corrosion and winter boiler inlet temperature The problem of, improve boiler thermal efficiency.
2, the utility model is used using the low low-level (stack-gas) economizer of warm pocket collocation, is not only utilized empty by warm pocket heating What is condensed after gas is hydrophobic, and the boiler smoke temperature that warm pocket is raised significantly reduces, and Mist heat recovering improves desalination coolant-temperature gage, Enhance boiler overall utilization rate.
3, PTFE can be used in the U heat exchange material of low low-level (stack-gas) economizer used in the utility model, reduces low temperature Corrosion and equipment attrition, improve device security.
4, the utility model overcome the prior art warm up pocket because it is hydrophobic into oxygen-eliminating device due to add the equipment such as drainage pump Deficiency, at the same also overcome because drain tank be reduce hydrophobic pump intake cavitation phenomenons also to keep certain height generate pressure Head, and drainage pump progress frequent start-stop is caused to control the high failure rate of cumbersome and drainage pump for the limit of drain tank height The low low-level (stack-gas) economizer of the hydrophobic entrance of warm pocket is saved the equipment such as drainage pump, has saved energy consumption, improved by deficiency, the utility model Security reliability.
5, the utility model warms up pocket using drawable type, and when warm air system maintenance, drawable type warms up pocket and can reduce to pot Kiln gas flow resistance has obvious energy conservation and consumption reduction effects.
Detailed description of the invention
Fig. 1 is double flow diagrams for dragging electric pump back pressure turbine comprehensive utilization device of the utility model.
In figure, feed pump 1, back pressure turbine 2, timing gear roller box 3, generator 4, warm pocket 5, air preheater 6, boiler 7, cloth Bag dust collector 8, air-introduced machine 9, low low-level (stack-gas) economizer 10, desulfurizing tower 11, chimney 12, pressure fan 13, oxygen-eliminating device 14, into steam control valve 15。
Specific embodiment
As shown in Figure 1, the double of the utility model drag electric pump back pressure turbine comprehensive utilization device, including feed pump 1, back pressure Steam turbine 2, timing gear roller box 3, generator 4, warm pocket 5, pressure fan 13, air preheater 6, boiler 7, bag filter 8, air-introduced machine 9, low low-level (stack-gas) economizer 10, oxygen-eliminating device 14, desulfurizing tower 11, chimney 12, the first output shaft and the feed pump 1 of back pressure turbine 2 Input shaft is connected, and the second output shaft of back pressure turbine 2 is connected with the input shaft of timing gear roller box 3, the output of timing gear roller box 3 Axis is connected with the input shaft of generator 4, and the steam drain of back pressure turbine 2 is connected with the steam inlet of warm pocket 5, warms up pocket 5 Water outlet is connected with the desalination water inlet of low low-level (stack-gas) economizer 10, desalination water out and the oxygen-eliminating device 14 of low low-level (stack-gas) economizer 10 The connection of desalination water inlet, the desalination water out of oxygen-eliminating device 14 are connected with the desalination water inlet of feed pump 2, the demineralized water of feed pump 2 Outlet is connect with the desalination water inlet of boiler 7, and the air outlet of pressure fan 13 is connected with the air inlet of warm pocket 5, warms up going out for pocket 5 Air port is connected with the air inlet of air preheater 6, and the air outlet of air preheater 6 is connected with the air inlet of boiler 7, the exhaust pass of boiler 7 It is connect with the gas inlet of air preheater 6, the exhanst gas outlet of air preheater 6 is connected with the gas inlet of bag filter 8, bag-type dust The exhanst gas outlet of device 8 is connected with the import of air-introduced machine 9, and the outlet of air-introduced machine 9 is connected with the gas inlet of low low-level (stack-gas) economizer 10, The exhanst gas outlet of low low-level (stack-gas) economizer 10 is connected with the import of desulfurizing tower 11, and the outlet of desulfurizing tower 11 and the import of chimney 12 connect It connects.Back pressure turbine 2 is additionally provided with steam inlet pipe, is provided on steam inlet pipe into steam control valve 15, with accurate control steaming Steam flow amount.
The double of the utility model drag electric pump back pressure turbine comprehensive utilization device workflow are as follows: are discharged from main steam turbine Low-pressure steam is done work by entering back pressure turbine 2 after adjusting flow into steam control valve 15, and back pressure turbine 2 drives water supply on one side Pump 1, while driving generator 4 to generate electricity by timing gear roller box 3, the steam exhaust being discharged from back pressure turbine 2 enters warm pocket 5, with Condense into demineralized water after the heat exchange of the cold air of pressure fan 13 into low low-level (stack-gas) economizer 10, in low low-level (stack-gas) economizer 10 with Enter 14 deoxygenation of oxygen-eliminating device after the heat exchange heating of the hot fume of air-introduced machine 9, the demineralized water after deoxygenation pressurizes laggard through feed pump 1 Enter the water supply system of boiler 7.Enter air preheater 6 after heat exchange heating in warm pocket 5 from the cold air of pressure fan 13, in sky Enter boiler 7 in pre- device 6 after hot fume further increases temperature and participates in burning.The hot fume that boiler 7 is discharged after burning is successively Through the cooling of air preheater 6, after 8 dedusting of bag filter, enter under the traction of air-introduced machine 9 low low-level (stack-gas) economizer 10 with from warm pocket Enter 11 desulfurization of desulfurizing tower after 5 condensed water heat exchange cooling, the flue gas after desulfurization is through 12 qualified discharge of chimney.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.But the utility model It is not limited in the embodiment described.
Embodiment 1
A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device, including feed pump 1, back pressure turbine 2, timing gear roller box 3, generator 4, warm pocket 5 (drawable type), pressure fan 13, air preheater 6, boiler 7, bag filter 8, air-introduced machine 9, low temperature save Coal device 10 (U heat exchange for being PTFE including one group of material), oxygen-eliminating device 14, desulfurizing tower 11, chimney 12, back pressure turbine 2 First output shaft is connected with the input shaft of feed pump 1, the second output shaft of back pressure turbine 2 and the input shaft of timing gear roller box 3 It is connected, the output shaft of timing gear roller box 3 is connected with the input shaft of generator 4, the steam drain of back pressure turbine 2 and warm pocket 5 Steam inlet is connected, and the water outlet of warm pocket 5 is connected with the desalination water inlet of low low-level (stack-gas) economizer 10, low low-level (stack-gas) economizer 10 Desalination water out is connect with the desalination water inlet of oxygen-eliminating device 14, the demineralized water of the desalination water out of oxygen-eliminating device 14 and feed pump 2 into Mouth is connected, and the desalination water out of feed pump 2 is connect with the desalination water inlet of boiler 7, the air outlet of pressure fan 13 and warm pocket 5 Air inlet is connected, and the air outlet of warm pocket 5 is connected with the air inlet of air preheater 6, the air outlet of air preheater 6 and the air inlet of boiler 7 Mouth is connected, and the exhaust pass of boiler 7 is connect with the gas inlet of air preheater 6, the exhanst gas outlet and bag filter 8 of air preheater 6 Gas inlet be connected, the exhanst gas outlet of bag filter 8 is connected with the import of air-introduced machine 9, the outlet of air-introduced machine 9 and low temperature The gas inlet of economizer 10 is connected, and the exhanst gas outlet of low low-level (stack-gas) economizer 10 is connected with the import of desulfurizing tower 11, desulfurizing tower 11 Outlet connect with the import of chimney 12.Back pressure turbine 2 is additionally provided with steam inlet pipe, is provided on steam inlet pipe into vapour Regulating valve 15, accurately to control steam flow.
Embodiment 2
A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device, including feed pump 1, back pressure turbine 2, timing gear roller box 3, generator 4, warm pocket 5 (drawable type), pressure fan 13, air preheater 6, boiler 7, bag filter 8, air-introduced machine 9, low temperature save Coal device 10 (U heat exchange for being PTFE including three groups of materials), oxygen-eliminating device 14, desulfurizing tower 11, chimney 12, back pressure turbine 2 First output shaft is connected with the input shaft of feed pump 1, the second output shaft of back pressure turbine 2 and the input shaft of timing gear roller box 3 It is connected, the output shaft of timing gear roller box 3 is connected with the input shaft of generator 4, the steam drain of back pressure turbine 2 and warm pocket 5 Steam inlet is connected, and the water outlet of warm pocket 5 is connected with the desalination water inlet of low low-level (stack-gas) economizer 10, low low-level (stack-gas) economizer 10 Desalination water out is connect with the desalination water inlet of oxygen-eliminating device 14, the demineralized water of the desalination water out of oxygen-eliminating device 14 and feed pump 2 into Mouth is connected, and the desalination water out of feed pump 2 is connect with the desalination water inlet of boiler 7, the air outlet of pressure fan 13 and warm pocket 5 Air inlet is connected, and the air outlet of warm pocket 5 is connected with the air inlet of air preheater 6, the air outlet of air preheater 6 and the air inlet of boiler 7 Mouth is connected, and the exhaust pass of boiler 7 is connect with the gas inlet of air preheater 6, the exhanst gas outlet and bag filter 8 of air preheater 6 Gas inlet be connected, the exhanst gas outlet of bag filter 8 is connected with the import of air-introduced machine 9, the outlet of air-introduced machine 9 and low temperature The gas inlet of economizer 10 is connected, and the exhanst gas outlet of low low-level (stack-gas) economizer 10 is connected with the import of desulfurizing tower 11, desulfurizing tower 11 Outlet connect with the import of chimney 12.Back pressure turbine 2 is additionally provided with steam inlet pipe, is provided on steam inlet pipe into vapour Regulating valve 15, accurately to control steam flow.
Embodiment 3
A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device, including feed pump 1, back pressure turbine 2, timing gear roller box 3, generator 4, warm pocket 5 (drawable type), pressure fan 13, air preheater 6, boiler 7, bag filter 8, air-introduced machine 9, low temperature save Coal device 10 (U heat exchange for being PTFE including five groups of materials), oxygen-eliminating device 14, desulfurizing tower 11, chimney 12, back pressure turbine 2 First output shaft is connected with the input shaft of feed pump 1, the second output shaft of back pressure turbine 2 and the input shaft of timing gear roller box 3 It is connected, the output shaft of timing gear roller box 3 is connected with the input shaft of generator 4, the steam drain of back pressure turbine 2 and warm pocket 5 Steam inlet is connected, and the water outlet of warm pocket 5 is connected with the desalination water inlet of low low-level (stack-gas) economizer 10, low low-level (stack-gas) economizer 10 Desalination water out is connect with the desalination water inlet of oxygen-eliminating device 14, the demineralized water of the desalination water out of oxygen-eliminating device 14 and feed pump 2 into Mouth is connected, and the desalination water out of feed pump 2 is connect with the desalination water inlet of boiler 7, the air outlet of pressure fan 13 and warm pocket 5 Air inlet is connected, and the air outlet of warm pocket 5 is connected with the air inlet of air preheater 6, the air outlet of air preheater 6 and the air inlet of boiler 7 Mouth is connected, and the exhaust pass of boiler 7 is connect with the gas inlet of air preheater 6, the exhanst gas outlet and bag filter 8 of air preheater 6 Gas inlet be connected, the exhanst gas outlet of bag filter 8 is connected with the import of air-introduced machine 9, the outlet of air-introduced machine 9 and low temperature The gas inlet of economizer 10 is connected, and the exhanst gas outlet of low low-level (stack-gas) economizer 10 is connected with the import of desulfurizing tower 11, desulfurizing tower 11 Outlet connect with the import of chimney 12.Back pressure turbine 2 is additionally provided with steam inlet pipe, is provided on steam inlet pipe into vapour Regulating valve 15, accurately to control steam flow.

Claims (4)

1. a kind of pair is dragged electric pump back pressure turbine comprehensive utilization device, including feed pump, back pressure turbine, timing gear roller box, hair Motor, warm pocket, pressure fan, air preheater, boiler, bag filter, air-introduced machine, low low-level (stack-gas) economizer, oxygen-eliminating device, desulfurizing tower, Chimney, which is characterized in that the first output shaft of the back pressure turbine is connected with the input shaft of the feed pump, the back pressure steam Second output shaft of turbine is connected with the input shaft of the timing gear roller box, the output shaft of the timing gear roller box and the power generation The input shaft of machine is connected, and the steam drain of the back pressure turbine is connected with the steam inlet of the warm pocket, the warm pocket Water outlet is connected with the desalination water inlet of the low low-level (stack-gas) economizer, and the desalination water out of the low low-level (stack-gas) economizer is removed with described The desalination water inlet of oxygen device connects, and the desalination water out of the oxygen-eliminating device is connected with the desalination water inlet of the feed pump, described The desalination water out of feed pump is connect with the desalination water inlet of the boiler, the air outlet of the pressure fan and the warm pocket Air inlet is connected, and the air outlet of the warm pocket is connected with the air inlet of the air preheater, the air outlet of the air preheater and institute The air inlet for stating boiler is connected, and the exhaust pass of the boiler is connect with the gas inlet of the air preheater, the air preheater Exhanst gas outlet is connected with the gas inlet of the bag filter, the exhanst gas outlet of the bag filter and the air-introduced machine Import is connected, and the outlet of the air-introduced machine is connected with the gas inlet of the low low-level (stack-gas) economizer, the low low-level (stack-gas) economizer Exhanst gas outlet is connected with the import of the desulfurizing tower, and the outlet of the desulfurizing tower is connect with the import of the chimney.
2. according to claim 1 pair is dragged electric pump back pressure turbine comprehensive utilization device, which is characterized in that the back pressure steam Turbine is additionally provided with steam inlet pipe, is provided on the steam inlet pipe into steam control valve.
3. according to claim 1 pair is dragged electric pump back pressure turbine comprehensive utilization device, which is characterized in that the low temperature Economizer includes at least one set of U heat exchange.
4. according to claim 1 pair is dragged electric pump back pressure turbine comprehensive utilization device, which is characterized in that the warm pocket Pocket is warmed up for drawable type.
CN201820480873.0U 2018-04-04 2018-04-04 A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device Expired - Fee Related CN208222484U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108469017A (en) * 2018-04-04 2018-08-31 浙江巨化热电有限公司 A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device and its method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108469017A (en) * 2018-04-04 2018-08-31 浙江巨化热电有限公司 A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device and its method
CN108469017B (en) * 2018-04-04 2023-09-15 浙江巨化热电有限公司 Comprehensive utilization device and method for back pressure steam turbine of double-drag electric pump

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Granted publication date: 20181211