CN203147734U - Thermal power plant flue gas waste heat recovery device - Google Patents
Thermal power plant flue gas waste heat recovery device Download PDFInfo
- Publication number
- CN203147734U CN203147734U CN 201320182261 CN201320182261U CN203147734U CN 203147734 U CN203147734 U CN 203147734U CN 201320182261 CN201320182261 CN 201320182261 CN 201320182261 U CN201320182261 U CN 201320182261U CN 203147734 U CN203147734 U CN 203147734U
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- heater
- air heater
- gate valve
- air
- waste heat
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Abstract
The utility model relates to a thermal power plant flue gas waste heat recovery device. The thermal power plant flue gas waste heat recovery device comprises a flue gas cooler, an inlet collection box, an outlet collection box, a circulating water pump, a feed water heater gate valve, an air heater, an air heater gate valve, a low-pressure heater water distribution regulating valve, a waste heat utilization guide valve and a feed water heater. The flue gas cooler is arranged in a flue. The inlet collection box and the outlet collection box are connected with the flue respectively. The other end of the outlet collection box is connected with the circulating water pump through a pipeline. The other end of the inlet collection box is connected with the feed water heater gate valve and the air heater gate valve through pipelines. The air heater is arranged in an air channel. Two ends of the air heater are connected with the air heater gate valve and the waste heat utilization guide valve respectively. Energy absorbed through a gas-exhausting waste heat recovery system can be used for heating condensate water or heating air through the air heater to raise the air supply temperature, and therefore extraction flow of steam of a low-pressure heater or the air heater can be reduced, power of a steam turbine can be increased, and the unit efficiency can be improved.
Description
Technical field
The utility model relates to heat energy recycle, especially relates to steam turbine of thermal power plant steam discharge waste heat recovery plant.
Background technology
At present, steam power plant generally adopts directly to be mended oxygen-eliminating device with the low temperature supplementing water and utilizes high-quality steam to heat, and especially the water at low temperature of a large amount of environment temperatures is mended into oxygen-eliminating device, has more increased the use amount of high quality steam, reduce the energy of steam acting, further increased thermal energy consumption.And simultaneously, the heat of steam turbine acting back steam discharge is made that by a large amount of dischargings in condenser cooling water cooling back this part energy does not obtain recycling, and has both increased the energy resource consumption of power plant, has strengthened the production cost of enterprise, again environment has been caused pollution.
Summary of the invention
The technical problems to be solved in the utility model is: for overcoming the shortcoming and defect of existing coal steam-electric plant smoke waste-heat recovery device, provide a kind of simple in structure, heat recovery efficiency is high coal steam-electric plant smoke waste-heat recovery device.
The technical scheme that the utility model solves the problems of the technologies described above is: comprising: gas cooler, the inlet header case, outlet collection case, water circulating pump, the feed-water heater gate valve, air heater, the air heater gate valve, low-pressure heater divides water regulating valve, the UTILIZATION OF VESIDUAL HEAT IN guide valve, feed-water heater, gas cooler places flue, and the inlet header case is connected respectively at flue with outlet collection case, the outlet collection case other end is connected with water circulating pump by pipeline, the inlet header case other end is connected with the air heater gate valve with the feed-water heater gate valve by pipeline, and air heater places the air channel, and two ends connect air heater gate valve and UTILIZATION OF VESIDUAL HEAT IN guide valve respectively.
Technique effect of the present utility model is: the ability that smoke waste heat recovery system absorbs can be used for heat-setting water, or add hot-air by air heater and improve wind pushing temperature, thereby reduce the amount of drawing gas of low-pressure heater or air heater, increase the steam turbine acting, improve unit efficiency.The present invention is rational in infrastructure, simplicity of design, effect are remarkable.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1, flue, 2, gas cooler, 3, the inlet header case, 4, outlet collection case, 5, water circulating pump, 6, feed-water heater gate valve, 7, air heater, 8, the air heater gate valve, 9, air channel, 10, low-pressure heater divides water regulating valve, and 11, the UTILIZATION OF VESIDUAL HEAT IN guide valve, 12, feed-water heater.
The specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
In Fig. 1, the utility model comprises: gas cooler 2, inlet header case 3, outlet collection case 4, water circulating pump 5, feed-water heater gate valve 6, air heater 7, air heater gate valve 8, low-pressure heater divides water regulating valve 10, UTILIZATION OF VESIDUAL HEAT IN guide valve 11, feed-water heater 12, gas cooler 2 places flue 1, inlet header case 3 is connected respectively at flue 1 with outlet collection case 4, and outlet collection case 4 other ends are connected with water circulating pump 5 by pipeline, and inlet header case 4 other ends are connected with air heater gate valve 8 with feed-water heater gate valve 6 by pipeline, air heater 7 places air channel 9, and two ends connect air heater gate valve 8 and UTILIZATION OF VESIDUAL HEAT IN guide valve 11 respectively.
Water enters gas cooler 2 by inlet header case 3 under the effect of water circulating pump 5, temperature raises behind the fume afterheat in the absorption back-end ductwork 1, flows out through outlet collection case 4.When environment temperature was higher, UTILIZATION OF VESIDUAL HEAT IN guide valve 11 switched to the heated feed water state, air heater gate valve 8 Close Alls, and feed-water heater gate valve 6 is all opened.The high-temperature water that flows out through outlet collection case 4 enters feed-water heater 12, and beginning is next after discharging the heat that absorbs in gas cooler 2 to low pressure feed water circulates.Condensate water divides water regulating valve 10 to enter feed-water heater 12 through low-pressure heater, absorbs the heat that recirculated water discharges, and temperature enters oxygen-eliminating device after raising.The branch water ratio that low-pressure heater divides water regulating valve 10 can change low-pressure heaters at different levels is optimized adjusting according to practical operation situation.When temperature environment was low, UTILIZATION OF VESIDUAL HEAT IN guide valve 11 switched to the heats cold air condition, and air heater gate valve 8 is all opened, feed-water heater gate valve 6 Close Alls.The high temperature circulation water that flows out through outlet collection case 4 enters air heater 7, and the heat that absorbs in gas cooler 2 is discharged to beginning next circulation after the air-supply, enters air heater 7 after the cold air temperature raises and continues heating.
The utility model is the explanation that the embodiment that mentions with reference to the accompanying drawings carries out, and this is wherein part embodiment just, and those skilled in the art can obtain to inspire from present embodiment, are out of shape to obtain other embodiment.Therefore, protection domain of the present utility model should be determined according to the protection domain of claim.
Claims (1)
1. coal steam-electric plant smoke waste-heat recovery device, it is characterized in that: comprising: gas cooler, the inlet header case, outlet collection case, water circulating pump, feed-water heater gate valve, air heater, the air heater gate valve, low-pressure heater divides water regulating valve, UTILIZATION OF VESIDUAL HEAT IN guide valve, feed-water heater, gas cooler places flue, the inlet header case is connected respectively at flue with outlet collection case, and the outlet collection case other end is connected with water circulating pump by pipeline, and the inlet header case other end is connected with the air heater gate valve with the feed-water heater gate valve by pipeline, air heater places the air channel, and two ends connect air heater gate valve and UTILIZATION OF VESIDUAL HEAT IN guide valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182261 CN203147734U (en) | 2013-03-30 | 2013-03-30 | Thermal power plant flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182261 CN203147734U (en) | 2013-03-30 | 2013-03-30 | Thermal power plant flue gas waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203147734U true CN203147734U (en) | 2013-08-21 |
Family
ID=48975254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320182261 Expired - Fee Related CN203147734U (en) | 2013-03-30 | 2013-03-30 | Thermal power plant flue gas waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203147734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969373A (en) * | 2016-01-14 | 2017-07-21 | 山西三合盛节能环保技术股份有限公司 | The air preheating system and air preheat method of sub-control phase-transition comprehensive UTILIZATION OF VESIDUAL HEAT IN |
-
2013
- 2013-03-30 CN CN 201320182261 patent/CN203147734U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969373A (en) * | 2016-01-14 | 2017-07-21 | 山西三合盛节能环保技术股份有限公司 | The air preheating system and air preheat method of sub-control phase-transition comprehensive UTILIZATION OF VESIDUAL HEAT IN |
| CN106969373B (en) * | 2016-01-14 | 2019-06-18 | 山西三合盛节能环保技术股份有限公司 | The air preheating system and air preheat method of sub-control phase-transition comprehensive UTILIZATION OF VESIDUAL HEAT IN |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140330 |