CN2274691Y - Low and medium temperature extra steam/hot water electric power generator - Google Patents
Low and medium temperature extra steam/hot water electric power generator Download PDFInfo
- Publication number
- CN2274691Y CN2274691Y CN 95201251 CN95201251U CN2274691Y CN 2274691 Y CN2274691 Y CN 2274691Y CN 95201251 CN95201251 CN 95201251 CN 95201251 U CN95201251 U CN 95201251U CN 2274691 Y CN2274691 Y CN 2274691Y
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- waste heat
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Abstract
The utility model discloses a steam/hot water flash evaporation composite electric generating device which utilizes low and medium temperature residual heat. The utility model utilizes waste gases whose temperatures are from 150 DEG C to 400 DEG C as the heat source to flush a coal economizer and an overheater in a waste heat boiler to ensure that after water in the waste heat boiler is heated, saturated steam is separated out by a steam and water separator between the coal economizer and the overheater, and after entering the overheater to receiving overheating treatment, the saturated steam is led to a steam turbine as main steam to drive a generator to generate electricity. After saturated water separated out in the steam and water separator receives expanding and pressure reducing treatment through a flash evaporator, part of saturated steam with low pressure is generated to be led to the saturated steam inlet of the steam turbine to do work as replenishment for electric generation. Compared with conventional electric generating devices by utilizing medium temperature residual heat, the electric quantity generated by the utility model can be increased by more than 25%.
Description
The utility model relates to a kind of electricity generating device, particularly relates to the afterheat steam/hot water flash distillation combined generating device of low temperature waste gas in a kind of the utilization.
As everyone knows, energy saving is a set longtime policy of China, wherein afterheat utilization is the most actively and effectively means, in many fields of the existing industry of China, afterheat utilization in the production process is all drawn attention, but to temperature about 150-400 ℃ in, the most effective utilization of low grade residual heat still is blank at present.
Along with the expansion of construction scale, cement demand is in rapid increase, and only in 1993, the cement output of China is above 3.6 hundred million tons.Cement industry is the big power consumer, and year consumption standard coal is up to 6,500 ten thousand tons, power consumption 35,000,000,000 degree, and more than 5% of coal electricity productioin that accounts for respectively accounts for the 35-45% of manufacture of cement cost.Entered since the sixties, the application in technology of producing cement along with dry method preheater and precalciner kiln (being the SP/NSP kiln), make kiln tail delivery temperature be reduced to 350 ℃ by 900 ℃, hear rate significantly reduces, reached about 3350KJ/kg.cl, the available heat utilization ratio reaches about 50%, and is both just like this, still has the heat that accounts for overall heat consumption 25-40% to be taken away by kiln tail gas and grog grate cooler exhaust gas discharged at present.Enterprise also will carry out work of water sprinkling for better material moisture to exhaust gas discharged, thereby waste a large amount of waterpower resourses again for reducing pollution of atmosphere.The similar diesel engine combustion gas temperature as the high-power diesel generating of situation reaches 360 ℃ therewith, and this waste heat does not obtain fully effectively utilizing at present yet.So how to reclaim the waste gas residual heat that these emit, it is very important that energy saving is increased economic efficiency.
Problem at above-mentioned existence, the purpose of this utility model is to provide the steam/hot water flash distillation combined generating device of low temperature waste gas waste heat in a kind of like this utilization, it need not any additional heating source, but the low grade residual heat that utilizes temperature still to reach 150-400 ℃ produces part superheated vapor and a large amount of saturation waters by waste heat boiler, saturation water wherein flashes off saturated vapour by flash vessel again, superheated vapor that is produced and saturated vapour are supplied with the steam turbine power generation unit respectively and are generated electricity, thereby waste-gas heat is fully utilized, improved the thermal efficiency of whole unit, reach the minimizing environmental pollution, save the purpose of a large amount of energy.
For achieving the above object, the utility model has been taked following technical measures:
Two boilers are housed, wherein one is the low temperature waste gas waste heat boiler, in economizer only is housed, another is middle temperature exhaust gas waste-heat boiler, in economizer and superheater are housed, the economizer of warm exhaust gas waste-heat boiler inlet is connected with low temperature waste gas waste heat boiler economizer exit in described, its outlet is connected with steam-water separator by pipeline with the superheater inlet, make isolated steam send into steam turbine work done generating as main steam through the overheated back of superheater, and separator bottom saturation water fairlead is connected with the flash distillation organ pipe, carry out flash distillation so that introduce saturation water, flash vessel is provided with one or more saturated steam pipes with steam turbine and is connected, so that the steam after the flash distillation enters steam turbine and replenishes the work done generating, the saturation water inflow dilatation water tank after the flash distillation is squeezed into boiler again and is carried out recirculation.
The major advantage of this device is:
1, it is bigger than the available energy of the middle temperature cogeneration device of routine, is 796 * 10 as the available heat of conventional device for generating power by waste heat
4KJ/H, and this device is 1180 * 10
4KJ/H, the latter is 148% of the former heat utilization efficiency.
2, can utilize 150-400 ℃ low grade residual heat, heat a large amount of saturation waters, not only can make exhaust gas temperature be reduced to 100-120 ℃ but also saturation water can be produced steam supply steam turbine by flash distillation and generate electricity, make waste heat reach the most effective utilization.
3, the effective rate of utilization that can make cement kiln is brought up to 65-70% from original 50%.
4, this device not only can utilize the waste gas residual heat of cement kiln, and can utilize at iron and steel, chemical process middle-low temperature heat.
5, this device is the same with conventional cogeneration, can't produce new pollution of atmosphere.
The utility model is described in further detail below in conjunction with drawings and Examples;
Fig. 1 is the utility model middle-low temperature heat steam/heat water flash distillation combined generating device figure
Fig. 2 is for utilizing the give up conventional steam electric power generator of fume afterheat and flue gas, the hot working fluid exchanged heat force characteristic comparison diagram of steam/heat water flash distillation combined generating device.
Shown in Fig. 1-2:
The parts that this device adopts and interconnected relationship are all the same with the conventional power generation usage device, its district Only be not to have adopted two waste heat boilers, i.e. low temperature waste gas waste heat boiler 1 and middle temperature waste gas used heat Boiler 2 is equipped with economizer 3 in the described waste heat boiler 1, and its outlet is by tube connector 24 and useless The entrance of economizer 3a in the heat boiler 2 connects, and a side of steam-water separator 6 is by pipeline 5 Be connected with the outlet header 4 of economizer 3a, its top is by steam fairlead 7 and superheater 8 Connect, the steam after overheated is sent to steam turbine by the main steam pipe 9 that is connected in steam turbine 10 10 and drive generator 11 works done generatings, draw by saturation water the lower end of steam-water separator 6 Pipeline 12 is connected with flash vessel 14, dodges in order to will pass to the high pressure saturation water of flash vessel 14 Steam the dilatation step-down, flash vessel 14 passes through single stage flash steam pipe 15 or multistage flash evaporation with steam turbine 10 Steam pipe 16 connects, and makes the steam after the dilatation step-down is dried send into steam turbine 10 additional works done Generating, the saturation water after the flash distillation are sent into dilatation water tank 17 so that also condensed with condenser 13 Water after oxygen-eliminating device 18 deoxygenations is squeezed into boiler 1 through feed pump 19 in the lump and is recycled.
Figure 1 shows that and adopt master in low temperature waste gas waste heat boiler 1 and the middle temperature exhaust gas waste-heat boiler 2 The waste gas that will discharge for cement kiln and opinion, the superheater that waste gas and boiler are horizontally disposed and province Coal device heating surface is made transversal flow, makes waste gas be 340-400 ℃ from temperature and reduces at last 100-120 ℃.
The steam that produces in the steam-water separator 6 and the ratio of saturated water amount will be by flue gas and workers Matter heat exchange thermodynamic property figure determines. Determine the saturated of steam turbine 10 according to the flash vessel characteristic Steam inlet adopts single-stage or multistage.
The ordinate of Fig. 2 represents the temperature of flue gas and working medium, and abscissa represents the heat exchange amount, figure In setback line 20 and 21 represent respectively in the steam-electric power flue gas cooling and working medium heating curves, And solid line 22 and 23 represents respectively flue gas cooling and working medium in steam/hot water flash evaporation compound power-generating The curve map of heating.
Embodiment.
Be joining in the 700T/H precalciner kiln of certain cement plant design, steam/hot water flash distillation combined generating device that low temperature waste gas utilizes, generated output is 1200KW, its steam parameter is:
Flow (T/H) pressure (kgf/cm2) temperature (℃) main steam 4.037 13 300 advances saturation water 22 210 one-level flash steams 2.027 8 169.6 two-stage flash vapour 2.638 1.1 101 turbine discharges 0.07 of two-stage flash development unit
Claims (1)
1, a kind of middle-low temperature heat steam/hot water flash distillation combined generating device, the main steam turbine that is connected with routine in the electricity generating device by boiler, generator, condenser, oxygen-eliminating device, dilatation water tank and feed water pump parts are formed, it is characterized in that: described boiler is low temperature waste gas waste heat boiler (1) and middle temperature waste heat boiler (2), the outlet of institute's dress economizer (3) is connected by the inlet of the economizer (3a) in connecting tube (24) and the waste heat boiler (2) in the described waste heat boiler (1), one side of steam-water separator (6) is connected with the outlet header (4) of economizer (3a) by pipeline (5), its top is connected with superheater (8) by steam fairlead (7), steam after overheated is sent to steam turbine (10) by the main steam pipe (9) that is connected in turbine (10) and drives generator (11) work done generating, the lower end of steam-water separator (6) is connected with flash vessel (14) by saturation water introduction pipe (12), carry out flash distillation dilatation step-down so that will pass to the high pressure saturation water of flash vessel (14), flash vessel (14) is connected by single stage flash steam pipe (15) or multistage flash evaporation steam pipe (16) with steam turbine (10), make steam after the dilatation step-down is dried send into steam turbine (10) and replenish the work done generating, the saturation water after the flash distillation send into dilatation water tank (17) so that and condenser (13) condensation and the water after oxygen-eliminating device (18) deoxygenation squeeze into boiler (1) through feed water pump (19) in the lump and carry out recirculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95201251 CN2274691Y (en) | 1995-01-24 | 1995-01-24 | Low and medium temperature extra steam/hot water electric power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95201251 CN2274691Y (en) | 1995-01-24 | 1995-01-24 | Low and medium temperature extra steam/hot water electric power generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2274691Y true CN2274691Y (en) | 1998-02-18 |
Family
ID=33854731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95201251 Expired - Lifetime CN2274691Y (en) | 1995-01-24 | 1995-01-24 | Low and medium temperature extra steam/hot water electric power generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2274691Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201159B (en) * | 2006-12-12 | 2010-04-14 | 华效资源有限公司 | Method and system for generating power by waste heat with adjustable flash evaporation system |
| CN101749961B (en) * | 2009-12-30 | 2012-02-29 | 北京世纪源博科技股份有限公司 | Sintering product line saturated steam afterheat generating system |
| CN103232085A (en) * | 2013-03-18 | 2013-08-07 | 哈尔滨工程大学 | Water treatment system for producing high pressure water vapor and distilled water |
| CN104296544A (en) * | 2014-10-13 | 2015-01-21 | 中信重工机械股份有限公司 | Low-temperature cogeneration flashing system |
| CN105464730A (en) * | 2016-01-07 | 2016-04-06 | 上海维尔泰克螺杆机械有限公司 | Waste heat recovery system for low-temperature flue gases and low-temperature hot fluids |
| CN105484811A (en) * | 2016-01-07 | 2016-04-13 | 上海维尔泰克螺杆机械有限公司 | Recycling system for low-temperature thermal fluid |
| CN108661803A (en) * | 2018-03-29 | 2018-10-16 | 贵州盘江煤层气开发利用有限责任公司 | A kind of waste heat recycle method improving generating efficiency |
| CN109210522A (en) * | 2018-10-04 | 2019-01-15 | 孙学贤 | Flash boiler and its operation logic |
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
-
1995
- 1995-01-24 CN CN 95201251 patent/CN2274691Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201159B (en) * | 2006-12-12 | 2010-04-14 | 华效资源有限公司 | Method and system for generating power by waste heat with adjustable flash evaporation system |
| CN101749961B (en) * | 2009-12-30 | 2012-02-29 | 北京世纪源博科技股份有限公司 | Sintering product line saturated steam afterheat generating system |
| CN103232085A (en) * | 2013-03-18 | 2013-08-07 | 哈尔滨工程大学 | Water treatment system for producing high pressure water vapor and distilled water |
| CN104296544A (en) * | 2014-10-13 | 2015-01-21 | 中信重工机械股份有限公司 | Low-temperature cogeneration flashing system |
| CN104296544B (en) * | 2014-10-13 | 2016-07-06 | 中信重工机械股份有限公司 | A kind of low-temperature cogeneration flash system |
| CN105464730A (en) * | 2016-01-07 | 2016-04-06 | 上海维尔泰克螺杆机械有限公司 | Waste heat recovery system for low-temperature flue gases and low-temperature hot fluids |
| CN105484811A (en) * | 2016-01-07 | 2016-04-13 | 上海维尔泰克螺杆机械有限公司 | Recycling system for low-temperature thermal fluid |
| CN108661803A (en) * | 2018-03-29 | 2018-10-16 | 贵州盘江煤层气开发利用有限责任公司 | A kind of waste heat recycle method improving generating efficiency |
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
| CN110056848B (en) * | 2018-04-23 | 2024-05-03 | 新能能源有限公司 | High-temperature high-pressure flue gas waste heat utilization system |
| CN109210522A (en) * | 2018-10-04 | 2019-01-15 | 孙学贤 | Flash boiler and its operation logic |
| CN109210522B (en) * | 2018-10-04 | 2024-05-31 | 孙学贤 | Operation method of flash evaporation boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |