CN108105748A - The high energy efficiency co-generation unit of mesolow combined heat - Google Patents
The high energy efficiency co-generation unit of mesolow combined heat Download PDFInfo
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- CN108105748A CN108105748A CN201711449555.4A CN201711449555A CN108105748A CN 108105748 A CN108105748 A CN 108105748A CN 201711449555 A CN201711449555 A CN 201711449555A CN 108105748 A CN108105748 A CN 108105748A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/325—Schematic arrangements or control devices therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention discloses a kind of high energy efficiency co-generation unit of mesolow combined heat, and system is made of superheated steam boiler, pumping back of the body formula steam turbine, generator, steam feed pump, oxygen-eliminating device, one/No. bis- high-pressure heater, axle envelope/moisturizing heater, medium/low pressure heat supply main pipe, medium/low pressure Vaporized temperature-reducing device.System provides low pressure steam and electric power simultaneously, can meet the cascade utilization of the needs of different user and thermal energy.By the steam of low grade heat energy, steam feed pump is driven, substitutes traditional electrically driven feed pump, saves high-grade electric energy.Recycling chemical demineralizing water comprehensively, water resource, which utilizes, to be optimized.Chemical demineralizing water is by shaft-packing leakage and 4 grades of stepped heatings of low grade heat energy steam, into superheated steam boiler；Chemical demineralizing water after stepped heating generates high-grade high temperature and high pressure steam in superheated steam boiler；The deep-step of thermal energy utilizes and improves unit whole efficiency.
Description
Technical field
The invention belongs to the technology scopes of cogeneration of heat and power；The industrial user towards low pressure steam is particularly related to, using steam-operating
The high energy efficiency co-generation unit that feed pump, thermal energy deep-step utilize.
Background technology
In December, 2015, Chinese generator installation total amount is up to 15.3 hundred million KW.Thermoelectricity, water power, nuclear power, wind-force and solar energy etc. are new
Accounting in the energy, corresponding installation amount and total installed capacity amount is respectively 9.9 hundred million KW, 65.56%, 3.2 hundred million KW, 21.1%,
26080000 KW, 1.7%, 1.72 hundred million KW, 11.64%.The endowment of resources in China's " rich coal, oil-poor, few gas ", determines foreseeable
Reasonable time the interior generation mode that will be maintained based on coal.Three big features are presented in the production of energy and consumption of sustainable development：
Cleaning, low-carbon, regeneration；Though coal " regenerates " for no reason at all, realize that " cleaning " of coal, " low-carbon " consumption still road of You Hen Long will be walked.It pushes away
It, should be along " increasing income " and " throttling " two dimension expansion into production of energy and the sustainable development of consumption.So-called " increasing income ", i.e., in energy
Source supply side promotes renewable or the biomass clean energy use；So-called " throttling ", i.e., energy demand side by new technology,
New process, new equipment, negative effect when improving energy efficiency, reducing energy-consuming to environment.
Cogeneration of heat and power is a kind of Advanced Idea utilized based on thermal energy step, takes into account the high energy efficiency producer of electric energy and thermal energy
Advantage in terms of formula, economy and environment is shown especially.Divide production mode with respect to thermoelectricity, the high-grade heat energy power-generating of cogeneration of heat and power is low-grade
Thermal energy heat supply -- fuel chemical energy changes into high-grade thermal energy, and the working medium for carrying thermal energy enters steam turbine acting power generation, does work(
Low grade heat energy heat supply afterwards；The Yin Ci , Long phases perplex Thermal Power Generation Industry energy utilization rate low " cold source energy " eventually into " tomorrow is yellow
Flower ".The previous and present life of cogeneration of heat and power is as follows：
1883, Hamburg, Germany municipal administration building imported power plant's thermal energy heating, started the beginning of thermoelectricity co-generating heat supplying.
1905, Britain released global first co-generator group, opened the process of industrialization of cogeneration of heat and power.
In 1907, Westing House in the U.S. produce the steam-extracting type cogeneration units for adjusting extraction pressure.
Nineteen twenty-four, the former Soviet Union build up in Leningrad first CHP Heating System with steam power plant's heat supply.
Nineteen ninety, the cogeneration of heat and power generated energy of the former Soviet Union reach more than the 34% of total amount；Vast soil and winter
Extremely cold weather creates splendidness of the cogeneration of heat and power in the former Soviet Union.2008, the power generation ratio of cogeneration of heat and power was in the U.S., European Union, moral
State respectively accounts for 8%, 10% and 14%, and the 52% of Denmark is the highest country of the power generation ratio of cogeneration of heat and power in the world.One speech covers it, heat
Acceptance is produced in Electricity Federation and the national conditions of various countries are closely bound up.
It 1958, is put into operation using Beijing No.1 Heat and Power Plant of cogeneration of heat and power central heating mode, this is Chinese cogeneration of heat and power
The milestone of starting.Cogeneration of heat and power saves 1/3 fire coal compared with thermoelectricity point production；Meet the energy-saving and emission-reduction policy that country advocates, comply with and build
If the big political affairs general plan of friendly environment society.The cogeneration of heat and power starting in China is slow, and development speed is just as the high ferro of China：2008
Year December, building up 2300 6MW and more than cogeneration units, the KW of installed capacity >=70,000,000 accounts for the 15% of thermoelectricity installation amount,
The 9% of generated energy undertakes national 80.5% industrial heating amount and 26% civil heating heating load；In December, 2013,6MW and more than
Cogeneration of heat and power installed capacity 251.82GW, occupies first place in the world.End in December, 2016, domestic largest cogeneration of heat and power enterprise
The first steam power plant of Taiyuan, installation amount=1.386 × 103MW。
Research around cogeneration of heat and power is comprehensive, lasting, and the depth range of research, intension extension jump onto new
Highly：Study cogeneration units thermal energy deep-step utilize, consider cogeneration units participate in peak load regulation network algorithm and
Engineering construction develops the recovery technology of cogeneration of heat and power fume afterheat, explores application of the heat pump in cogeneration of heat and power, introduces natural gas
Combined cycle cogeneration unit is designed, attempts cooperation and the scheduling of wind-force, solar energy and cogeneration of heat and power, test heat accumulation is set
Application of the standby, heat-storage technology in CHP Heating System, the design and operation of Optimum distribution formula co-generation unit propose
Criterion and step of city cogeneration of heat and power project site selection, etc..
Boxed area Industrial agglomeration area, the large scale industry garden of local characteristic are created, is the crystallization of people's intelligence and wisdom, is
Develop local economy, the strong handgrip for increasing dealer's income.At present, Industrial agglomeration area or industrial park generally mating cogeneration of heat and power
Central heating system.It must be noted that such mating co-generation unit has its particularity；Lose shake be correlative study so far still
Locate blank, this patent attempts to fill up this " blank ".It is cut from mating co-generation unit particularity, optimization cogeneration of heat and power system
The energy stream and logistics of system improve the efficiency of co-generation unit.
First, the heat demand of Industrial agglomeration area or industrial park is met with the co-generation unit built, possesses output
The ability of different pressures steam.Secondly environment protection standard, central heating substitute numerous enterprises in garden to provide boiler heat supplying for oneself, and investment is de-
The feasibility of sulphur denitration dust collecting equipment is set up.3rd, energy utilization rate is improved, not only improves the amount of output electric energy and thermal energy, and
And the matter of concern energy -- increase the ratio of high-grade energy.Finally, contribute as far as possible to peak load regulation network and (save and adjust power grid to " matching somebody with somebody and building
Co-generation unit " requires nothing more than report mostly：Unit is fallen in lines or off-the-line).This patent is around thirdly " raising energy utilization rate "
Expansion；Outline at another 3 points：First point, be related to the structure design of Steam Turbine, second point is related to green technology and regulation,
4 points, discussion will be write articles with reference to thermic load.The more representational intellectual property Summary on research results of thermal power cogeneration central heating system is such as
Under：
Patent of invention " three-low cylinder three-exhausting condensing type turbine group cogeneration of heat and power control method and device "
(ZL200410020392.4), propose three-low cylinder three-exhausting condensing type turbine set thermoelectric combined generation device, ensure intermediate pressure cylinder steam discharge
Pressure is with main steam flow functional relation PMiddle row=f (GMain vapour), reduce symmetrical flow division formula low pressure (LP) cylinder steam into steam flow amount and/or increase master
Steam input pipe quantity of steam meets extraction for heat supply branch pipe heating steam amount.
Patent of invention " method for expanding thermoelectricity co-generating heat supplying scale " (ZL200610099043.5), proposes absorption type heat
Pump is combined the method for expanding thermoelectricity co-generating heat supplying scale with vapor heat exchanger, does not change existing steam power plant's installed capacity and steam
Amount improves heat capacity.
Patent of invention " back pressure type cogeneration of heat and power and pure condensing steam thermal combined dispatching System and method for " (ZL20111
0324079.X), propose that independent operating coagulates gas formula fired power generating unit and cogeneration units combined dispatching, reduce cogeneration units
It is consumed with the total energy of pure condensate gas formula fired power generating unit.
Patent of invention " co-generation unit for applying steam accumulator " (ZL201210278362.8), proposes a kind of answer
With the co-generation unit of steam accumulator, steam utilization is improved, reduces pollution.
Above-mentioned intellectual property achievement is with regard to the structure design of Steam Turbine, and heat pump combination vapor heat exchanger is in cogeneration of heat and power
Using the combined dispatching of back pressure type cogeneration of heat and power and pure condensing steam thermal, application start of the steam accumulator in cogeneration of heat and power is begged for
By achievement in research has reference value；Exploration for the mating cogeneration of heat and power in Industrial agglomeration area or industrial park is vacant, and there are offices
Limit；Therefore, it is necessary to make further innovative design.
The content of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of high energy efficiency thermoelectricity of mesolow combined heat connection
Production system.
The high energy efficiency co-generation unit of mesolow combined heat, it is characterised in that system is carried on the back by superheated steam boiler, pumping
Formula steam turbine, generator, steam feed pump, oxygen-eliminating device, No.1 high-pressure heater, No. two high-pressure heaters, gland heater, benefits
Water heater, middle pressure heat supply main pipe, low pressure heat supply main pipe, middle pressure steam Desuperheating device, low-pressure steam Desuperheating device, mesolow connection
Close high energy efficiency co-generation unit steam pipe line, the high energy efficiency co-generation unit water-supply line of mesolow combined heat of heat supply
Composition, the model NG-500/10.1-M of superheated steam boiler, the model EHNG71/63/160 of pumping back of the body formula steam turbine, generator
Model 50WX18Z-054LLT, power 50MW；Superheated steam boiler drives electrical power generators through taking out back of the body formula steam turbine, takes out the back of the body
Formula steam turbine is connected with steam feed pump, and gland heater adds through moisturizing heater, oxygen-eliminating device, steam feed pump, No. two high pressures
Hot device, No.1 high-pressure heater are connected with superheated steam boiler, and middle pressure heat supply main pipe is connected with middle pressure steam Desuperheating device, low pressure
Heat supply main pipe is connected with low-pressure steam Desuperheating device；
It takes out back of the body formula gas turbine exhaust gas to be divided into two, the steam drive steam feed pump acting of low grade heat energy, provides all the way
The power of superheated steam boiler water supply system；It takes out back of the body formula steam turbine and three-level steam extraction is set, first order steam extraction is through middle pressure steam desuperheat
Device adjusts steam parameter, makes the middle pressure steam thermal parameter of middle pressure steam Desuperheating device output up to standard and by middle pressure heat supply
Main pipe is middle pressure steam industrial user's heat supply, and back of the body formula vapour is taken out in second level steam extraction, third level steam extraction heating superheated steam boiler feedwater
The another way of turbine exhaust adjusts steam parameter, the low pressure for exporting low-pressure steam Desuperheating device through low-pressure steam Desuperheating device
Steam thermal parameter is up to standard, by low pressure heat supply main pipe is low-pressure steam industrial user's heat supply, the high energy of mesolow combined heat
The low-pressure steam of co-generation unit output low grade heat energy is imitated, while the middle pressure steam compared with high-grade thermal energy is provided；Middle pressure supplies
Hot main-piping pressure 2.6-3.0Mpa, 280-300 DEG C of temperature, low pressure heat supply main-piping pressure 0.68-0.84Mpa, temperature 250-280
℃；Tradition takes out back of the body formula co-generation unit using electrically driven feed pump, and consumption high-grade electric energy provides superheated steam boiler to water system
The power of system；The low-pressure steam that back of the body formula gas turbine exhaust gas is low grade heat energy is taken out, is low-pressure steam industrial user's heat supply.
The high energy efficiency co-generation unit steam pipe line of the mesolow combined heat include boiler to steam turbine pipeline,
Level-one steam extraction to middle pressure steam Desuperheating device pipeline, middle pressure steam Desuperheating device presses heat supply main pipe pipeline, two level steam extraction extremely to middle
No.1 high-pressure heater pipeline, three-level steam extraction to No. two high-pressure heater pipelines, steam turbine to steam feed pump pipeline, low pressure are steamed
Vapour Desuperheating device is to low pressure heat supply main pipe pipeline, steam feed pump to moisturizing heater pipeline, shaft-packing leakage to gland heater
Pipeline, steam turbine to low-pressure steam Desuperheating device pipeline；
The steam of superheated steam boiler reaches by boiler to steam turbine pipeline and takes out back of the body formula steam turbine；Take out back of the body formula steam turbine
Level-one steam extraction, pass through level-one steam extraction to middle pressure steam Desuperheating device pipeline, middle pressure steam Desuperheating device, middle pressure steam desuperheat dress
It puts to middle pressure heat supply main pipe pipeline, heat supply main pipe is pressed in arrival；It takes out the two level steam extraction of back of the body formula steam turbine, pass through two level steam extraction to one
Number high-pressure heater pipeline reaches No.1 high-pressure heater；Take out back of the body formula steam turbine three-level steam extraction, by three-level steam extraction to No. two
High-pressure heater pipeline reaches No. two high-pressure heaters；Take out back of the body formula gas turbine exhaust gas all the way, pass through steam turbine to steam feed pump
Pipeline reaches steam feed pump；Take out back of the body formula gas turbine exhaust gas another way, by steam turbine to low-pressure steam Desuperheating device pipeline,
Low-pressure steam Desuperheating device, low-pressure steam Desuperheating device to low pressure heat supply main pipe pipeline reach low pressure heat supply main pipe；Steam-operating feeds water
Pump exhaust passes through steam feed pump to moisturizing heater pipeline, arrival moisturizing heater；Shaft-packing leakage, by shaft-packing leakage extremely
Gland heater pipeline reaches gland heater.
The high energy efficiency co-generation unit water-supply line of the mesolow combined heat includes chemical deionization water pot to axis
Envelope heater pipeline, gland heater to moisturizing heater pipeline, moisturizing heater to oxygen-eliminating device pipeline, oxygen-eliminating device to steam-operating are given
Water pump pipeline, steam feed pump to No. two high-pressure heater pipelines, No. two high-pressure heaters to No.1 high-pressure heater pipeline, one
Number high-pressure heater is to superheated steam boiler pipeline, No.1 high-pressure heater to No. two high-pressure heater hydrophobic pipelines, No. two height
Pressure heater to oxygen-eliminating device hydrophobic pipeline, gland heater to moisturizing heater condensate pipeline, moisturizing heater to oxygen-eliminating device is dredged
Water pipeline；
Chemical demineralizing water, to gland heater pipeline, is arrived as the feedwater of superheated steam boiler, by chemical deionization water pot
It is heated up to gland heater；Gland heater water outlet passes through gland heater to moisturizing heater pipeline, arrival moisturizing heater
Heating；The water outlet of moisturizing heater passes through moisturizing heater to oxygen-eliminating device pipeline, arrival oxygen-eliminating device deoxygenation；Oxygen-eliminating device water outlet passes through
Oxygen-eliminating device reaches steam feed pump pressurization to steam feed pump pipeline；Steam feed pump water outlet, by steam feed pump to No. two
High-pressure heater pipeline reaches No. two high-pressure heater heating；No. two high-pressure heater water outlets, by No. two high-pressure heaters extremely
No.1 high-pressure heater pipeline reaches the heating of No.1 high-pressure heater；The water outlet of No.1 high-pressure heater passes through No.1 hyperbaric heating
Device reaches superheated steam boiler heating to superheated steam boiler pipeline；Chemical demineralizing water utilizes shaft-packing leakage and low grade heat energy
Steam carry out 4 grades heating, 4 grades heating after chemical demineralizing water, high temperature and high pressure steam is heated as in superheated steam boiler；
Gland heater generation it is hydrophobic, pass through gland heater to moisturizing heater condensate pipeline, reach moisturizing heating
Device；Gland heater and moisturizing heater generation it is hydrophobic, pass through moisturizing heater to oxygen-eliminating device hydrophobic pipeline, reach deoxygenation
Device；No.1 high-pressure heater generation it is hydrophobic, pass through No.1 high-pressure heater to No. two high-pressure heater hydrophobic pipelines, reach two
Number high-pressure heater；No.1 high-pressure heater and the generation of No. two high-pressure heaters it is hydrophobic, by No. two high-pressure heaters to removing
Oxygen device hydrophobic pipeline reaches oxygen-eliminating device；The co-generation unit of mesolow combined heat recycles chemical demineralizing water comprehensively.
Compared with prior art, the present invention it has an advantageous effect in that：
The high energy efficiency co-generation unit of mesolow combined heat, while low pressure steam and electric power are provided, it can meet not
With the demand of user and the cascade utilization of thermal energy.By the steam of low grade heat energy, steam feed pump is driven, substitutes traditional electricity
Dynamic feed pump, saves high-grade electric energy.Recycling chemical demineralizing water comprehensively, water resource, which utilizes, to be optimized.Chemical demineralizing water passes through
4 grades of stepped heatings of shaft-packing leakage and low grade heat energy steam, into superheated steam boiler；Chemical deionization after stepped heating
Water generates high-grade high temperature and high pressure steam in superheated steam boiler；The deep-step of thermal energy is whole using unit is improved
Efficiency.
Description of the drawings
Fig. 1 is the high energy efficiency co-generation unit schematic diagram of mesolow combined heat；
Fig. 2 is the co-generation unit principle sketch of conventional back pressure formula unit heat supply；
Fig. 3 is the high energy efficiency co-generation unit steam pipe line chart of mesolow combined heat；
Fig. 4 is the high energy efficiency co-generation unit feed pipe line chart of mesolow combined heat；
It is numbered in figure using three digit 1/2/3X X, 1/2/3 characterization equipment/steam/water, XX is sequence number
Using the steam/water pipeline of void/solid line characterization connection equipment in figure
101- superheated steam boilers, 102- pumping back of the body formula steam turbines, 103- generators, 104- steam feed pumps,
105- oxygen-eliminating devices, 106- No.1 high-pressure heaters, No. bis- high-pressure heaters of 107-, 108- gland heaters,
109- moisturizing heaters, press heat supply main pipe in 111-, 112- low pressure heat supply main pipes,
121- middle pressure steam Desuperheating devices, 122- low-pressure steam Desuperheating devices, 134- electrically driven feed pumps；
200- boilers are to steam turbine pipeline, 201- level-ones steam extraction to middle pressure steam Desuperheating device pipeline,
202- middle pressure steams Desuperheating device presses heat supply main pipe pipeline to middle,
The steam extraction of 203- two levels to No.1 high-pressure heater pipeline,
The steam extraction of 204- three-levels to No. two high-pressure heater pipelines,
205- steam turbines to steam feed pump pipeline,
206- low-pressure steams Desuperheating device to low pressure heat supply main pipe pipeline,
207- steam feed pumps to moisturizing heater pipeline,
208- shaft-packing leakages are to gland heater pipeline, 209- steam turbines to low-pressure steam Desuperheating device pipeline；
300- chemical deionizations water pot is to gland heater pipeline, 301- gland heaters to moisturizing heater pipeline,
302- moisturizings heater is to oxygen-eliminating device pipeline, 304- oxygen-eliminating devices to steam feed pump pipeline,
305- steam feed pumps to No. two high-pressure heater pipelines,
No. bis- high-pressure heaters of 306- to No.1 high-pressure heater pipeline,
307- No.1s high-pressure heater to superheated steam boiler pipeline,
308- No.1s high-pressure heater to No. two high-pressure heater hydrophobic pipelines,
No. bis- high-pressure heaters of 309- to oxygen-eliminating device hydrophobic pipeline,
321- gland heaters to moisturizing heater condensate pipeline,
303- moisturizings heater is to oxygen-eliminating device hydrophobic pipeline；
Specific embodiment
As shown in Figure 1 and Figure 2, the high energy efficiency co-generation unit of mesolow combined heat is by superheated steam boiler 101, pumping
106, No. two back of the body formula steam turbine 102, generator 103, steam feed pump 104, oxygen-eliminating device 105, No.1 high-pressure heater high pressures add
Hot device 107, gland heater 108, moisturizing heater 109, middle pressure heat supply main pipe 111, low pressure heat supply main pipe 112, middle pressure steam
Desuperheating device 121, low-pressure steam Desuperheating device 122, mesolow combined heat high energy efficiency co-generation unit steam pipe line, in
The high energy efficiency co-generation unit water-supply line composition of low pressure combined heat, the model NG-500/ of superheated steam boiler 101
10.1-M takes out the model EHNG71/63/160 of back of the body formula steam turbine 102, model 50WX18Z-054LLT, the power of generator 103
50MW；Superheated steam boiler 101 drives generator 103 to generate electricity through taking out back of the body formula steam turbine 102, takes out back of the body formula steam turbine 102 and steam-operating
Feed pump 104 is connected, and gland heater 108 is through 104, No. two moisturizing heater 109, oxygen-eliminating device 105, steam feed pump high pressures
Heater 107, No.1 high-pressure heater 106 are connected with superheated steam boiler 101, and middle pressure heat supply main pipe 111 subtracts with middle pressure steam
Warm device 121 is connected, and low pressure heat supply main pipe 112 is connected with low-pressure steam Desuperheating device 122；
It takes out 102 exhaust of back of the body formula steam turbine to be divided into two, the steam drive steam feed pump 104 of low grade heat energy is done all the way
Work(provides the power of 101 water supply system of superheated steam boiler；It takes out back of the body formula steam turbine 102 and three-level steam extraction, first order steam extraction warp is set
Middle pressure steam Desuperheating device 121 adjusts steam parameter, reaches the middle pressure steam thermal parameter of the output of middle pressure steam Desuperheating device 121
It marks and presses heat supply main pipe 111 by middle as middle pressure steam industrial user's heat supply, second level steam extraction, third level steam extraction heating overheat
Steam boiler 101 feeds water, and takes out the another way of 102 exhaust of back of the body formula steam turbine, steam ginseng is adjusted through low-pressure steam Desuperheating device 122
Number, make low-pressure steam Desuperheating device 122 export low-pressure steam thermal parameter it is up to standard, by low pressure heat supply main pipe 112 be low pressure
Steam industrial user's heat supply, the low-pressure steam of the high energy efficiency co-generation unit output low grade heat energy of mesolow combined heat,
Middle pressure steam compared with high-grade thermal energy is provided simultaneously；Middle pressure heat supply main-piping pressure 2.6-3.0Mpa, 280-300 DEG C of temperature, low pressure
Heat supply main-piping pressure 0.68-0.84Mpa, 250-280 DEG C of temperature；Conventional back pressure formula co-generation unit uses electrically driven feed pump
134, consumption high-grade electric energy provides the power of superheated steam boiler water supply system, and back pressure turbine exhaust is low grade heat energy
Low-pressure steam, be low-pressure steam industrial user's heat supply.
Explanation：The comparison of back of the body formula and the cogeneration of heat and power scheme of mesolow combined heat is taken out convenient for tradition, tradition is sketched and takes out the back of the body
The principle of formula co-generation unit.In view of the detection of co-generation unit thermal parameter, control technology maturation, superheated steam pot
Stove is taken out back of the body formula steam turbine and generator category knowledge scope, therefore is only referred to；In text around co-generation unit energy stream,
Logistics expansion is discussed.Consider the succinct of statement without loss of generality, take out back of the body formula gas turbine exhaust gas as auxiliary steam to oxygen-eliminating device
Heating process be simplified processing.
As shown in figure 3, the high energy efficiency co-generation unit steam pipe line of mesolow combined heat includes boiler to steam turbine
Pipeline 200, level-one steam extraction to middle pressure steam Desuperheating device pipeline 201, middle pressure steam Desuperheating device to middle pressure heat supply main pipe pipeline
202nd, two level steam extraction to No.1 high-pressure heater pipeline 203, three-level steam extraction to No. two high-pressure heater pipelines 204, steam turbines extremely
Steam feed pump pipeline 205, low-pressure steam Desuperheating device to low pressure heat supply main pipe pipeline 206, steam feed pump to moisturizing heat
Device pipeline 207, shaft-packing leakage to gland heater pipeline 208, steam turbine to low-pressure steam Desuperheating device pipeline 209；
The steam of superheated steam boiler 101 reaches by boiler to steam turbine pipeline 200 and takes out back of the body formula steam turbine 102；It takes out
The level-one steam extraction of back of the body formula steam turbine 102 passes through level-one steam extraction to middle pressure steam Desuperheating device pipeline 201, middle pressure steam desuperheat dress
121, middle pressure steam Desuperheating device is put to middle pressure heat supply main pipe pipeline 202, heat supply main pipe 111 is pressed in arrival；Take out back of the body formula steam turbine
102 two level steam extraction passes through two level steam extraction to No.1 high-pressure heater pipeline 203, arrival No.1 high-pressure heater 106；Take out the back of the body
The three-level steam extraction of formula steam turbine 102 passes through three-level steam extraction to No. two high-pressure heater pipelines 204, No. two high-pressure heaters of arrival
107；Back of the body formula steam turbine 102 is taken out to be vented all the way, by steam turbine to steam feed pump pipeline 205, arrival steam feed pump 104；
It takes out back of the body formula steam turbine 102 and is vented another way, by steam turbine to low-pressure steam Desuperheating device pipeline 209, low-pressure steam desuperheat dress
122, low-pressure steam Desuperheating device is put to low pressure heat supply main pipe pipeline 206, reaches low pressure heat supply main pipe 112；Steam feed pump 104
Exhaust passes through steam feed pump to moisturizing heater pipeline 207, arrival moisturizing heater 109；Shaft-packing leakage is leaked by axle envelope
Gas reaches gland heater 108 to gland heater pipeline 208.
As shown in figure 4, the high energy efficiency co-generation unit water-supply line of mesolow combined heat includes chemical deionization water pot
To gland heater pipeline 300, gland heater to moisturizing heater pipeline 301, moisturizing heater to oxygen-eliminating device pipeline 302,
Oxygen-eliminating device to steam feed pump pipeline 304, steam feed pump to 305, No. two high-pressure heaters of No. two high-pressure heater pipelines extremely
No.1 high-pressure heater pipeline 306, No.1 high-pressure heater to superheated steam boiler pipeline 307, No.1 high-pressure heater to two
Number 308, No. two high-pressure heaters of high-pressure heater hydrophobic pipeline to oxygen-eliminating device hydrophobic pipeline 309, gland heater to moisturizing adds
Hot device hydrophobic pipeline 321, moisturizing heater to oxygen-eliminating device hydrophobic pipeline 303；
Chemical demineralizing water as superheated steam boiler 101 feedwater, pass through chemical deionization water pot to gland heater pipeline
300, it reaches gland heater 108 and heats；108 water outlet of gland heater passes through gland heater to moisturizing heater pipeline
301, it reaches moisturizing heater 109 and heats；109 water outlet of moisturizing heater, by moisturizing heater to oxygen-eliminating device pipeline 302, arrive
Up to 105 deoxygenation of oxygen-eliminating device；105 water outlet of oxygen-eliminating device passes through oxygen-eliminating device to steam feed pump pipeline 304, arrival steam feed pump 104
Pressurization；104 water outlet of steam feed pump passes through steam feed pump to No. two high-pressure heater pipelines 305, No. two hyperbaric heatings of arrival
Device 107 heats；No. two 107 water outlets of high-pressure heater, by No. two high-pressure heaters to No.1 high-pressure heater pipeline 306, arrive
It is heated up to No.1 high-pressure heater 106；106 water outlet of No.1 high-pressure heater passes through No.1 high-pressure heater to superheated steam pot
Furnace line 307 reaches superheated steam boiler 101 and heats；Chemical demineralizing water carries out 4 using shaft-packing leakage and low grade heat energy steam
Grade heating, 4 grades heating after chemical demineralizing water, be heated as high temperature and high pressure steam in superheated steam boiler 101；
Gland heater 108 generate it is hydrophobic, pass through gland heater to moisturizing heater condensate pipeline 321, reach mend
Water heater 109；Gland heater 108 and moisturizing heater 109 generate hydrophobic, hydrophobic to oxygen-eliminating device by moisturizing heater
Pipeline 303 reaches oxygen-eliminating device 105；No.1 high-pressure heater 106 generate it is hydrophobic, pass through No.1 high-pressure heater to No. two height
Heater condensate pipeline 308 is pressed, reaches No. two high-pressure heaters 107；No.1 high-pressure heater 106 and No. two high-pressure heaters
107 generation it is hydrophobic, pass through No. two high-pressure heaters to oxygen-eliminating device hydrophobic pipeline 309, reach oxygen-eliminating device 105；Mesolow is combined
The co-generation unit of heat supply recycles chemical demineralizing water comprehensively.
Claims (3)
1. a kind of high energy efficiency co-generation unit of mesolow combined heat, which is characterized in that system is by superheated steam boiler
(101), back of the body formula steam turbine (102), generator (103), steam feed pump (104), oxygen-eliminating device (105), No.1 hyperbaric heating are taken out
Device (106), No. two high-pressure heaters (107), gland heater (108), moisturizing heater (109), middle pressure heat supply main pipe
(111), low pressure heat supply main pipe (112), middle pressure steam Desuperheating device (121), low-pressure steam Desuperheating device (122), mesolow connection
Close high energy efficiency co-generation unit steam pipe line, the high energy efficiency co-generation unit water-supply line of mesolow combined heat of heat supply
Composition, the model NG-500/10.1-M of superheated steam boiler (101), the model EHNG71/63/ of pumping back of the body formula steam turbine (102)
160, model 50WX18Z-054LLT, the power 50MW of generator (103)；Superheated steam boiler (101) is through taking out back of the body formula steam turbine
(102) generator (103) is driven to generate electricity, takes out back of the body formula steam turbine (102) and be connected with steam feed pump (104), gland heater
(108) it is high through moisturizing heater (109), oxygen-eliminating device (105), steam feed pump (104), No. two high-pressure heaters (107), No.1
Pressure heater (106) is connected with superheated steam boiler (101), middle pressure heat supply main pipe (111) and middle pressure steam Desuperheating device (121)
It is connected, low pressure heat supply main pipe (112) is connected with low-pressure steam Desuperheating device (122)；
It takes out back of the body formula steam turbine (102) exhaust to be divided into two, the steam drive steam feed pump (104) of low grade heat energy is done all the way
Work(provides the power of superheated steam boiler (101) water supply system；It takes out back of the body formula steam turbine (102) and three-level steam extraction is set, the first order is taken out
Vapour adjusts steam parameter, the middle pressure steam heat for exporting middle pressure steam Desuperheating device (121) through middle pressure steam Desuperheating device (121)
Work parameter is up to standard and is middle pressure steam industrial user's heat supply by middle pressure heat supply main pipe (111), and second level steam extraction, the third level are taken out
Vapour heating superheated steam boiler (101) feeds water, and takes out the another way of back of the body formula steam turbine (102) exhaust, through low-pressure steam Desuperheating device
(122) adjust steam parameter, make low-pressure steam Desuperheating device (122) export low-pressure steam thermal parameter it is up to standard, pass through low pressure
Heat supply main pipe (112) is low-pressure steam industrial user's heat supply, and the high energy efficiency co-generation unit output of mesolow combined heat is low
The low-pressure steam of grade thermal energy, while the middle pressure steam compared with high-grade thermal energy is provided；Middle pressure heat supply main-piping pressure 2.6-3.0Mpa,
280-300 DEG C of temperature, low pressure heat supply main-piping pressure 0.68-0.84Mpa, 250-280 DEG C of temperature.
2. the co-generation unit of mesolow combined heat according to claim 1, it is characterised in that the mesolow
The high energy efficiency co-generation unit steam pipe line of combined heat includes boiler to steam turbine pipeline (200), level-one steam extraction to middle pressure
Vaporized temperature-reducing device pipeline (201), middle pressure steam Desuperheating device to middle pressure heat supply main pipe pipeline (202), two level steam extraction to No.1
High-pressure heater pipeline (203), three-level steam extraction to No. two high-pressure heater pipelines (204), steam turbine to steam feed pump pipeline
(205), low-pressure steam Desuperheating device is to low pressure heat supply main pipe pipeline (206), steam feed pump to moisturizing heater pipeline
(207), shaft-packing leakage is to gland heater pipeline (208), steam turbine to low-pressure steam Desuperheating device pipeline (209)；
The steam of superheated steam boiler (101) reaches by boiler to steam turbine pipeline (200) and takes out back of the body formula steam turbine (102)；It takes out
The level-one steam extraction of back of the body formula steam turbine (102) passes through level-one steam extraction to middle pressure steam Desuperheating device pipeline (201), middle pressure steam desuperheat
Device (121), middle pressure steam Desuperheating device press heat supply main pipe (111) to middle pressure heat supply main pipe pipeline (202) in arrival；Take out the back of the body
The two level steam extraction of formula steam turbine (102) reaches No.1 hyperbaric heating by two level steam extraction to No.1 high-pressure heater pipeline (203)
Device (106)；The three-level steam extraction of back of the body formula steam turbine (102) is taken out by three-level steam extraction to No. two high-pressure heater pipelines (204), is reached
No. two high-pressure heaters (107)；That takes out back of the body formula steam turbine (102) exhaust wherein passes through steam turbine to steam feed pump pipeline all the way
(205), steam feed pump (104) is reached；The another way that back of the body formula steam turbine (102) is vented is taken out by steam turbine to low-pressure steam to subtract
Warm device pipeline (209), low-pressure steam Desuperheating device (122), low-pressure steam Desuperheating device to low pressure heat supply main pipe pipeline
(206), low pressure heat supply main pipe (112) is reached；The exhaust of steam feed pump (104) passes through steam feed pump to moisturizing heater tube
Line (207) reaches moisturizing heater (109)；It takes out the shaft-packing leakage of back of the body formula steam turbine (102), added by shaft-packing leakage to axle envelope
Hot device pipeline (208) reaches gland heater (108).
3. the high energy efficiency co-generation unit of mesolow combined heat according to claim 1, which is characterized in that described
The high energy efficiency co-generation unit water-supply line of mesolow combined heat includes chemical deionization water pot to gland heater pipeline
(300), gland heater is to moisturizing heater pipeline (301), moisturizing heater to oxygen-eliminating device pipeline (302), oxygen-eliminating device to vapour
Dynamic feed pump pipeline (304), steam feed pump to No. two high-pressure heater pipelines (305), No. two high-pressure heaters to No.1 height
Heater pipeline (306), No.1 high-pressure heater to superheated steam boiler pipeline (307), No.1 high-pressure heater are pressed to No. two
High-pressure heater hydrophobic pipeline (308), No. two high-pressure heaters to oxygen-eliminating device hydrophobic pipeline (309), gland heater to moisturizing
Heater condensate pipeline (321), moisturizing heater to oxygen-eliminating device hydrophobic pipeline (303)；
Feedwater of the chemical demineralizing water as superheated steam boiler (101) passes through chemical deionization water pot to gland heater pipeline
(300), gland heater (108) is reached to heat；The water outlet of gland heater (108) is heated by gland heater to moisturizing
Device pipeline (301) reaches moisturizing heater (109) and heats；The water outlet of moisturizing heater (109), by moisturizing heater to removing
Oxygen device pipeline (302) reaches oxygen-eliminating device (105) deoxygenation；The water outlet of oxygen-eliminating device (105) passes through oxygen-eliminating device to steam feed pump pipe
Line (304) reaches steam feed pump (104) and pressurizes；The water outlet of steam feed pump (104) passes through steam feed pump to No. two height
Heater pipeline (305) is pressed, reaches No. two high-pressure heater (107) heating；The water outlet of No. two high-pressure heaters (107) passes through
No. two high-pressure heaters reach No.1 high-pressure heater (106) and heat to No.1 high-pressure heater pipeline (306)；No.1 high pressure
The water outlet of heater (106) passes through No.1 high-pressure heater to superheated steam boiler pipeline (307), arrival superheated steam boiler
(101) heat；Chemical demineralizing water carries out 4 grades of heating using shaft-packing leakage and low grade heat energy steam, and the chemistry after 4 grades of heating removes
Brine is heated as high temperature and high pressure steam in superheated steam boiler (101).
The hydrophobic of gland heater (108) generation passes through gland heater to moisturizing heater condensate pipeline (321), arrival moisturizing
Heater (109)；Gland heater (108) and the hydrophobic of moisturizing heater (109) generation pass through moisturizing heater to oxygen-eliminating device
Hydrophobic pipeline (303) reaches oxygen-eliminating device (105)；The hydrophobic of No.1 high-pressure heater (106) generation passes through No.1 high-pressure heater
To No. two high-pressure heater hydrophobic pipelines (308), No. two high-pressure heaters (107) are reached；No.1 high-pressure heater (106) and two
The hydrophobic of number high-pressure heater (107) generation passes through No. two high-pressure heaters to oxygen-eliminating device hydrophobic pipeline (309), reaches oxygen-eliminating device
(105)；The co-generation unit of mesolow combined heat recycles chemical demineralizing water comprehensively.
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