CN103195529A - Device and method for power generation and heating by using waste heat produced by quartz glass - Google Patents
Device and method for power generation and heating by using waste heat produced by quartz glass Download PDFInfo
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- CN103195529A CN103195529A CN2013100944352A CN201310094435A CN103195529A CN 103195529 A CN103195529 A CN 103195529A CN 2013100944352 A CN2013100944352 A CN 2013100944352A CN 201310094435 A CN201310094435 A CN 201310094435A CN 103195529 A CN103195529 A CN 103195529A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
Provided are a device and a method for power generation and heating by using waste heat produced by quartz glass. The method is characterized in that in the heating period, one part of high temperature flue gases discharged by a glass tunnel kiln enters a heat exchanger, and partial heat is transferred to cooling water and enters a coil pipe arranged below a factory building floor after temperature rising to perform heating for factory buildings, the other part of high temperature flue gases enters an evaporator of a lower temperature generator set to transmit heat to power generation media, the power generation media enter an expander of the generator set to do work and drive a generator to generate power, low voltage power generation media after doing work enters a condenser for condensing and heat emission, and heated cooling water is sent to a cooling tower to be recycled after being cooled; and in the non-heating period, the temperature flue gases discharged by the glass tunnel kiln totally enter the lower temperature generator set to be converted to electricity to be output, accordingly zero energy consumption of the factory buildings is achieved and environment pollution and heat pollution are reduced.
Description
Technical field
The present invention relates to a kind of apparatus and method of utilizing the two circulating generations of low temperature and floor panel heating to recycle industrial exhaust heat, particularly relate to a kind of being applied in the silica glass production technology, the waste heat gas of recycling the discharging of glass tunnel kiln generates electricity and heats, to realize the apparatus and method of plant area's building zero energy consumption.
Background technique
The energy and environment problem has become the matter of utmost importance that countries in the world face, and the environmental pollution that energy shortage and energy-consuming cause has become the significant obstacle of restriction global economic growth and social progress.Follow the national economy high speed development, China has become second-biggest-in-the-world energy-consuming state, and the energy shortage problem is serious day by day.Industrial waste heat resource is regarded as the 5th big conventional energy resource after coal, oil, rock gas, waterpower.Residual heat resources are very abundant and extensively be present in the various production processes, particularly in industries such as coal, oil, iron and steel, chemical industry, building materials, machinery and light industrys, according to investigations, China's industrial exhaust heat amount accounts for the 17%-67% of industrial fuel consumption, and wherein recovery rate reaches more than 60%.
China's industrial afterheat recovery utilization ratio has only 30% at present, lags far behind international most advanced level, and a large amount of various forms of residual heat resources are directly wasted.So-called industrial exhaust heat utilization refers to reclaim the heat energy that the liquid state that is higher than ambient temperature (cooling water etc.), gaseous state (high-temperature flue gas), solid-state (high temperature steel etc.) material of discharging in the explained hereafter be loaded with and the technology that is used, this technology can reduce thermo-pollution and environmental pollution on the one hand, can reduce high-grade energy consumption on the other hand, reach multipurposes such as energy-saving and emission-reduction capital reduction, also be beneficial to the sustainable development of the energy.Therefore, analyze adoptable power-saving technology and equipment in each production process, break through technical bottleneck, exploitation correlation technique and equipment, and with the process production techniques utilization that is coupled, being the key issue that each industrial trade presses for solution, also is one of main means that realize the energy-saving and emission-reduction strategic objective.
In addition, the building operation energy consumption accounts for 20% of China's total energy consumption, and wherein heating and ventilation and air conditioning energy consumption proportion in the building operation energy consumption surpasses 60%, this shows that building energy conservation is imperative.If can be with the heat recovery in the production technology, part of waste heat be for plant area's building and heating, and part of waste heat is converted into electric power output and builds from electricity consumption for plant area, will realize the zero energy consumption of plant area's building.Yet for the heat resource below 160 ℃, still there are a lot of difficult problems in current generation technology.
Summary of the invention
The purpose of this invention is to provide a kind of in conjunction with the silica glass production technology, utilize silica glass to produce the apparatus and method that waste heat generates electricity and heats, part waste heat heats to plant area through extracting, part waste heat turns to electric power output and builds from electricity consumption for plant area, with the cascade utilization of the realization energy and the zero energy consumption of plant area's building, and then the raising rate of energy, reduce environmental pollution and thermo-pollution.
In the existing silica glass production technology, 400 ℃ high-temperature flue gas of glass tunnel kiln discharging is directly discharged atmosphere, and a large amount of waste heats are not utilized, and have caused serious thermo-pollution and environmental pollution.
The present invention intends implementing with 400 ℃ high-temperature flue gas heat the heating of generating and plant area's building, to realize the cascade utilization of the energy.Its method is the phase of heating in the winter time, 400 ℃ of high-temperature flue gas parts of glass tunnel kiln discharging enter heat exchanger, with part heat transferred cooling water, make flue-gas temperature be down to 50 ℃, cooling water temperature rises to 45 ℃ by 40 ℃, water after the intensification enters and is embedded in plant area and builds in the underfloor coil pipe, is plant area's building heating; Another part high-temperature flue gas enters in the vaporizer of low-temperature electricity-generating unit, with the heat transferred power generation medium, high-temperature flue gas is cooled to 50 ℃, high-pressure gaseous power generation medium after the intensification enters the decompressor expansion working of generator set, the traction generator for electricity generation, low pressure power generation medium after the work done enters the condenser condenses heat release, and heat is passed to the cooling water of circulation, and the cooling water of intensification recycles after delivering to the cooling tower cooling; At non-heating period, the high-temperature flue gas of glass tunnel kiln discharging all enters the low-temperature electricity-generating unit, changes into electric power output.
The device that the present invention utilizes silica glass production waste heat to generate electricity and heat is made of low-temperature electricity-generating unit and heating installation two-part.Wherein, described heating installation is made up of heat exchanger and heating coil, and the shell side of heat exchanger is communicated with silica glass tunnel kiln flue, and heating coil is embedded under the floor of plant area's building, with the tube side formation circulation loop of heat exchanger.Described low-temperature electricity-generating unit is made up of vaporizer, decompressor, working medium pump, generator, condenser and cooling tower, the shell side import of vaporizer connects silica glass tunnel kiln flue, the shell side outlet is communicated with atmosphere, the working medium pump outlet is connected with the import of vaporizer tube side, the outlet of vaporizer tube side connects the import of decompressor working medium, the decompressor sender property outlet connects the import of condenser shell side, and the outlet of condenser shell side is connected with the working medium pump import; Described generator is connected with decompressor, drives work done by decompressor; The tube side of condenser and cooling tower form circulation loop, and circulation loop is provided with circulating water pump.
When non-heating period, heating installation to cut out, the high-temperature flue gas of glass tunnel kiln discharging all enters in the low-temperature electricity-generating unit, changes into electric power output and builds from electricity consumption for plant area.
The present invention utilizes the waste heat that tunnel kiln is discharged in the silica glass explained hereafter to be used for generating and heating, and the flue-gas temperature that tunnel kiln is discharged is up to 400 ℃, and the flue-gas temperature after the utilization is down to 50 ℃.The electric power of generator set output is used for the factory district building from electricity consumption, and plant area's heating also realizes by the waste heat that extracts tunnel kiln.All processes does not destroy the requirement of original production process, has saved a large amount of fossil energies, reduces the consumption of high-grade energy, realizes the zero energy consumption of plant area's building, reduces environmental pollution and thermo-pollution, has reached the target of energy-saving and emission-reduction.
Description of drawings
Fig. 1 is that the present invention utilizes silica glass to produce that waste heat generates electricity and the structural representation of heating installation.
Among the figure: 1-glass tunnel kiln flue; The 2-heat exchanger; The 3-heating coil; 4-plant area building; The 5-vaporizer; The 6-decompressor; The 7-condenser; The 8-working medium pump; The 9-circulating water pump; The 10-cooling tower; The 11-generator.
Embodiment
The embodiment of the invention intends implementing with 400 ℃ high-temperature flue gas heat the heating of generating and plant area's building, realizes the cascade utilization of the energy.As shown in Figure 1, the winter heating phase, high-temperature flue gas (400 ℃) part of glass tunnel kiln flue 1 discharging enters heat exchanger 2 and emits the part heat, and the temperature of flue gas drops to 50 ℃.The temperature of cooling water rises to 45 ℃ by original 40 ℃, and the water after the intensification enters and is embedded in the underfloor heating coil 3, heats whole floor, by ground equably to indoor heat loss through radiation, thereby be 4 heating of plant area's building.High-temperature flue gas another part of glass tunnel kiln flue 1 discharging enters the vaporizer 5 of low-temperature electricity-generating unit, and heat is taken away by power generation medium, and high-temperature flue gas is cooled to 50 ℃.High-pressure gaseous power generation medium after the intensification enters decompressor 6 expansion workings of generator set, and the low pressure power generation medium after the work done enters condenser 7 condensation heat releases, heat is passed to the cooling water of circulation.The power generation medium of liquefaction enters 8 pressurizations of high-pressure working medium pump again, enters vaporizer 5 circular flows afterwards again.Decompressor 6 is 11 generatings of traction generator in running, and the electric power of output uses for plant area's building 4.The cooling water that absorbs the heat of power generation medium in the condenser 8 and heat up is delivered to cooling tower 10 through circulating water pump 9, recycles after the heat of cooling is discharged.
Be example with certain silica glass factory, in its plant produced technology, the high-temperature flue gas that glass tunnel kiln produces is 400 ℃, and enthalpy is 685.04kJ/kg, discharge amount 30000m
3/ h, density is 0.52kg/m
3Article three, the discharge amount of glass tunnel kiln is 90000m
3/ h, its cooling is down to 50 ℃ after discharging, 50 ℃ of flue gas enthalpies are 323.63kJ/kg.After adopting apparatus of the present invention, the heat recovery that produces, the winter heating phase, part waste heat heats to plant area through extracting, part waste heat is converted into electric power output and builds from electricity consumption for plant area, non-heating period, waste heat all are converted into electric power output and build from electricity consumption for plant area, have realized the cascade utilization of the energy and the zero energy consumption of plant area's building.Existing producing region building area 10000m
2, getting builder area heating index is 50w/m
2, then building total heat duties is 500kW.If the heat supply in winter phase is 120 days, calculating can get heating heat of heating phase and amount to that high-temperature flue gas is 9630m in the tunnel kiln
3/ h, remaining flue gas are 80370m
3/ h.The residue flue gas heat enters generator set and implements generating, supposes that the generating thermal efficiency is 10%, and then generated output is 417kW, and generated energy is 1201859kWh in the generator set day operation time 24h, heating period.Non-heating period, high-temperature flue gas all enter generator set and implement generating, suppose that the generating thermal efficiency is 10%, and then generated output is 467kW.Non-heating period is annual to be calculated by 210 days, generator set day operation time 24h, and then generated energy is 2355253kWh.Amount to annual electricity generating capacity and equal 3.56 * 10
6KWh.Calculate by 0.6 yuan of local electricity price/degree, annual economic benefit can reach 2,240,000 yuan.In addition, will produce huge environmental benefit and energy-saving effect.Through conversion, can save 1422 tons in mark coal every year, CO
23100 tons of emission reduction, SO
296 tons of emission reduction, nitride emission reduction are 47 tons.
Claims (2)
1. utilize silica glass to produce the method that waste heat generates electricity and heats, it is characterized in that in the heating phase, 400 ℃ of high-temperature flue gas parts of glass tunnel kiln discharging enter heat exchanger, with part heat transferred cooling water, make flue-gas temperature be down to 50 ℃, cooling water temperature rises to 45 ℃ by 40 ℃, and the water after the intensification enters and is embedded in plant area and builds in the underfloor coil pipe, is plant area's building heating; Another part high-temperature flue gas enters in the vaporizer of low-temperature electricity-generating unit, with the heat transferred power generation medium, high-temperature flue gas is cooled to 50 ℃, high-pressure gaseous power generation medium after the intensification enters the decompressor expansion working of generator set, the traction generator for electricity generation, low pressure power generation medium after the work done enters the condenser condenses heat release, and heat is passed to the cooling water of circulation, and the cooling water of intensification recycles after delivering to the cooling tower cooling; At non-heating period, the high-temperature flue gas of glass tunnel kiln discharging all enters the low-temperature electricity-generating unit, changes into electric power output.
2. utilize silica glass to produce the device that waste heat generates electricity and heats, it is characterized in that being constituted by low-temperature electricity-generating unit and heating installation two-part, wherein, described heating installation is made up of heat exchanger and heating coil, the shell side of heat exchanger is communicated with silica glass tunnel kiln flue, heating coil is embedded under the floor of plant area's building, with the tube side formation circulation loop of heat exchanger; Described low-temperature electricity-generating unit is made up of vaporizer, decompressor, working medium pump, generator, condenser and cooling tower, the shell side import of vaporizer connects silica glass tunnel kiln flue, the shell side outlet is communicated with atmosphere, the working medium pump outlet is connected with the import of vaporizer tube side, the outlet of vaporizer tube side connects the import of decompressor working medium, the decompressor sender property outlet connects the import of condenser shell side, and the outlet of condenser shell side is connected with the working medium pump import; Described generator is connected with decompressor, drives work done by decompressor; The tube side of condenser and cooling tower form circulation loop, and circulation loop is provided with circulating water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100944352A CN103195529A (en) | 2013-03-23 | 2013-03-23 | Device and method for power generation and heating by using waste heat produced by quartz glass |
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| CN2013100944352A CN103195529A (en) | 2013-03-23 | 2013-03-23 | Device and method for power generation and heating by using waste heat produced by quartz glass |
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| CN103195529A true CN103195529A (en) | 2013-07-10 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549417Y (en) * | 2002-06-19 | 2003-05-07 | 秦皇岛玻璃工业研究设计院 | Power generating system by glass-kiln waste heat |
| WO2011036180A1 (en) * | 2009-09-24 | 2011-03-31 | Siemens Aktiengesellschaft | Method and device for using waste heat released in granulating a liquid slag |
| CN102242647A (en) * | 2011-04-20 | 2011-11-16 | 南志远 | Waste heat power generation system of multiple glass kilns |
| CN102787869A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | Cogeneration system utilizing recycled waste heat of low-temperature flue gas of coke oven |
| CN202581506U (en) * | 2012-04-09 | 2012-12-05 | 天津大学 | Low temperature industrial cooling circulating water afterheat and areal centralized heating combination system |
| CN203146046U (en) * | 2013-03-23 | 2013-08-21 | 山西易通环能科技集团有限公司 | Device capable of utilizing waste heat of quartz glass production to generate power and supply heat |
-
2013
- 2013-03-23 CN CN2013100944352A patent/CN103195529A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549417Y (en) * | 2002-06-19 | 2003-05-07 | 秦皇岛玻璃工业研究设计院 | Power generating system by glass-kiln waste heat |
| WO2011036180A1 (en) * | 2009-09-24 | 2011-03-31 | Siemens Aktiengesellschaft | Method and device for using waste heat released in granulating a liquid slag |
| CN102242647A (en) * | 2011-04-20 | 2011-11-16 | 南志远 | Waste heat power generation system of multiple glass kilns |
| CN202581506U (en) * | 2012-04-09 | 2012-12-05 | 天津大学 | Low temperature industrial cooling circulating water afterheat and areal centralized heating combination system |
| CN102787869A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | Cogeneration system utilizing recycled waste heat of low-temperature flue gas of coke oven |
| CN203146046U (en) * | 2013-03-23 | 2013-08-21 | 山西易通环能科技集团有限公司 | Device capable of utilizing waste heat of quartz glass production to generate power and supply heat |
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Application publication date: 20130710 |