CN210088810U - Boiler heat gradient utilization device - Google Patents
Boiler heat gradient utilization device Download PDFInfo
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- CN210088810U CN210088810U CN201920598002.3U CN201920598002U CN210088810U CN 210088810 U CN210088810 U CN 210088810U CN 201920598002 U CN201920598002 U CN 201920598002U CN 210088810 U CN210088810 U CN 210088810U
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Abstract
The utility model relates to an energy-concerving and environment-protective technical field specifically relates to a boiler heat gradient utilizes device, including boiler, oxygen-eliminating device, blowdown flash tank, steam turbine, exhaust-heat boiler, activated carbon fiber adsorption tower, mix the heating basin. The utility model efficiently integrates the waste heat generated in each section of the thermal power generating unit, utilizes the waste heat to heat the tap water, outputs low-cost clean hot water to a water consumption unit, improves the heat energy utilization rate of the boiler, and creates higher economic value; the utility model discloses still utilize exhaust-heat boiler to carry out the heat exchange to boiler high temperature flue gas, output high temperature hot steam and low temperature flue gas utilize high temperature hot steam to carry out the thermal treatment regeneration to the activated carbon fiber that adsorbs the low temperature flue gas simultaneously, have realized the high-efficient utilization of resource, have effectively protected the environment when saving the cost.
Description
Technical Field
The utility model relates to an energy-concerving and environment-protective technical field specifically relates to a boiler heat gradient utilizes device.
Background
With the increasingly prominent contradiction between economic development and energy and environment in China, the energy conservation and the energy reduction of the thermal power generating unit become a problem which is concerned with much. The large-capacity supercritical unit is an effective means for improving the economy of a thermal system, and meanwhile, the effective utilization of the waste heat of the unit is also an important technical measure for energy conservation of the unit. Meanwhile, the flue gas emission treatment of the thermal power generating unit is also a problem of great concern, namely SO in the flue gas2And NOXCan cause great damage to the surrounding environment. Therefore, energy conservation and environmental protection are two major problems which need to be solved most urgently by the thermal power generating unit at present.
SUMMERY OF THE UTILITY MODEL
For solving two big problems of energy-concerving and environment-protective that present thermal power generating unit needed to solve most urgently, the utility model provides a boiler heat gradient utilizes device.
The utility model provides a following technical scheme:
a boiler heat gradient utilization device comprises a boiler, a deaerator, a sewage discharge flash tank, a steam turbine, a waste heat boiler, an activated carbon fiber adsorption tower and a mixed heating water tank.
The deaerator is connected with the boiler through a make-up water inlet, and a steam outlet of the deaerator is connected with the mixed heating water tank through a heat preservation pipe to serve as a first heat source. The deaerator has the functions of removing oxygen which can corrode a boiler in water, enabling dissolved oxygen in the water to be below 7PP, ensuring the quality of boiler make-up water, and enabling emissions to be oxygen and saturated steam.
The blowdown flash tank passes through boiler sewage discharge port and links to each other with the boiler, and the steam vent of blowdown flash tank passes through the insulating tube and links to each other with mixing the heating basin, as the second heat source. The effect of blowdown flash tank is that carry out blowdown decompression dilatation with the boiler, and the adiabatic expansion separation is secondary steam and waste heat water for the blow off water in the expander to through dilatation, step-down, heat exchange, then discharge in the expander, secondary steam is drawn forth by special pipeline, and waste heat water is discharged through floater level valve or overflow regulating valve is automatic, and heat energy can obtain the recovery and recycle. Therefore, the secondary steam is used as a heat source, partial heat lost by boiler pollution discharge can be recovered, and the boiler efficiency is improved.
The steam turbine air inlet is connected with a high-pressure steam outlet of the boiler through a steam turbine shaft seal steam collecting device, the steam turbine air outlet is connected with the cooling water tower through a condenser, and the steam turbine shaft seal steam collecting device is connected with the mixed heating water tank through a heat preservation pipe and serves as a third heat source; the steam turbine is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates and does work outwards, and the steam turbine is the main equipment of a modern thermal power plant. The steam turbine is in actual operation, and the steam that inevitably can leak in seal axle department utilizes steam turbine bearing seal steam collection device to collect the steam that leaks, can retrieve partial boiler blowdown loss's heat, improves boiler efficiency.
The smoke inlet of the waste heat boiler is connected with the exhaust gas outlet of the boiler, the smoke outlet of the waste heat boiler is connected with the activated carbon fiber adsorption tower through a dust remover, and the superheated steam outlet of the waste heat boiler is connected with the mixed heating water tank through an electromagnetic valve and serves as a fourth heat source through a heat preservation pipe. The waste heat boiler is a boiler which heats water to a certain temperature by using waste heat in waste gas, waste material or waste liquid in various industrial processes and heat generated after combustible substances are combusted, and can produce hot water or steam for other sections to use through waste heat recovery.
And a hot steam inlet of the activated carbon fiber adsorption tower is connected with a superheated steam outlet of the waste heat boiler through an electromagnetic valve by a heat insulation pipe. Activated carbon fiber adsorbs as a neotype dry process boiler flue gas treatment mode, can desulfurization, denitrogenation simultaneously, and the device is simple, and the maintenance cost is the second, has reproducibility, compares in other individual pollutant treatment modes and has huge advantage. However, the activated carbon fiber is used as an adsorbing material, and after the activated carbon fiber is adsorbed and saturated, the activated carbon fiber needs to be desorbed and regenerated by hot steam, so that the active vacancies on the surface of the activated carbon fiber are exposed again.
Furthermore, a temperature control meter, a liquid level meter and a flow meter are arranged in the mixing and heating water tank, and hot water is conveyed to a water consumption unit through a hot water pipeline under the action of a hot water pump. The mixed heating water tank heats tap water through the heat sources 1-4, a large amount of hot water can be obtained with extremely low operation cost, the heat utilization rate of the boiler is improved, and higher economic value is created.
Further, the steam temperature at the hot steam inlet of the activated carbon fiber adsorption tower should be controlled at 120-150 ℃. The desorption of the activated carbon fiber has certain requirements on the temperature of hot steam: the temperature is too low, so that active vacancies on the surface of the activated carbon fiber cannot be exposed, and the regeneration of the activated carbon fiber is realized; the micro-mechanism of the activated carbon fiber is destroyed by the over-high temperature, so that the adsorption capacity is reduced.
Compare with current boiler energy gradient utilization device, the beneficial effects of the utility model are that:
1) the utility model discloses the high efficiency has integrated the waste heat that each workshop section of thermal power generating unit produced, utilizes the waste heat to heat the running water, to the clean hot water of the low cost of water unit output, has improved the heat utilization rate of boiler, has created higher economic value.
2) The utility model discloses utilize exhaust-heat boiler to carry out the heat exchange to boiler high temperature flue gas, output high temperature hot steam and low temperature flue gas utilize high temperature hot steam to carry out the thermal treatment regeneration to the activated carbon fiber that adsorbs the low temperature flue gas simultaneously, have realized the high-efficient utilization of resource, have saved the cost and have effectively protected the environment when improving economic benefits.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. boiler, 11, make-up water inlet, 12, boiler sewage discharge port, 13, high-pressure steam outlet, 2, oxygen-eliminating device, 3, blowdown flash tank, 4, steam turbine, 41, steam turbine bearing seal steam collection device, 42, condenser, 43, cooling water tower, 44, second solenoid valve 5, exhaust-heat boiler, 51, flue gas inlet, 52, exhanst gas outlet, 53, superheated steam outlet, 54, the drum, 55, first solenoid valve, 6, activated carbon fiber adsorption tower, 61, dust remover, 62, hot steam inlet, 7, mix and heat the basin.
Detailed Description
To further illustrate the manner in which the present invention is made and the effects obtained, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1, a boiler heat gradient utilization device comprises a boiler 1, a deaerator 2, a blowdown flash tank 3, a steam turbine 4, a waste heat boiler 5, an activated carbon fiber adsorption tower 6 and a mixed heating water tank 7.
The deaerator 2 is connected with the boiler 1 through a make-up water inlet 11, and a steam outlet of the deaerator 2 is connected with the mixed heating water tank 7 through a heat preservation pipe to serve as a first heat source. The deaerator 2 is used for removing oxygen which can corrode a boiler in water, so that dissolved oxygen in the water is below 7PP, the quality of boiler make-up water is guaranteed, and the emission is oxygen and saturated steam.
The blowdown flash tank 3 is connected with the boiler 1 through a boiler sewage discharge port 12, and a steam discharge port of the blowdown flash tank 3 is connected with the mixed heating water tank 7 through a heat preservation pipe to serve as a second heat source. The blowdown flash tank 3 is used for carrying out blowdown decompression flash tank with boiler 1, and the blow off water adiabatic expansion separation is secondary steam and waste heat water in the expander to through dilatation, step-down, heat exchange, then discharge in the expander, secondary steam is drawn forth by special pipeline, and waste heat water is discharged through floater level valve or overflow governing valve are automatic, and heat energy can obtain the recovery and recycle. Therefore, the secondary steam is used as a heat source, part of heat lost by the boiler 1 during pollution discharge can be recovered, and the efficiency of the boiler 1 is improved.
The air inlet of the steam turbine 4 is connected with the high-pressure steam outlet 13 of the boiler 1 through a steam turbine shaft seal steam collecting device 41, the air outlet of the steam turbine 4 is connected with a cooling water tower 43 through a condenser 42, and the steam turbine shaft seal steam collecting device 41 is connected with the mixed heating water tank 7 through a heat preservation pipe and used as a third heat source; the steam turbine 4 is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and does work outwards, and the rotary steam power device is a main device of a modern thermal power plant. In the actual operation of the steam turbine 4, the steam inevitably leaks from the shaft sealing position, and the steam leaking from the shaft sealing steam collecting device 41 is collected, so that part of heat lost by the boiler 1 during pollution discharge can be recovered, and the efficiency of the boiler 1 is improved.
The smoke inlet 51 of the waste heat boiler 5 is connected with the exhaust gas outlet of the boiler 1, the smoke outlet 52 of the waste heat boiler 5 is connected with the activated carbon fiber adsorption tower 6 through the dust remover 61, and the superheated steam outlet 53 of the waste heat boiler 5 is connected with the mixed heating water tank 7 through the electromagnetic valve 55 and the heat preservation pipe to serve as a fourth heat source. The exhaust-heat boiler 55 is a boiler that heats water to a certain temperature by using heat generated by burning waste heat and combustible substances in waste gas, waste material or waste liquid in various industrial processes, and the exhaust-heat boiler 5 can produce hot water or steam for use in other sections through waste heat recovery.
The hot steam inlet 62 of the activated carbon fiber adsorption tower 6 is connected with the superheated steam outlet 53 of the waste heat boiler 5 through the electromagnetic valve 55 by a heat preservation pipe. Activated carbon fiber adsorbs as a neotype dry process boiler flue gas treatment mode, can desulfurization, denitrogenation simultaneously, and the device is simple, and the maintenance cost is the second, has reproducibility, compares in other individual pollutant treatment modes and has huge advantage. However, the activated carbon fiber is used as an adsorbing material, and after the activated carbon fiber is adsorbed and saturated, the activated carbon fiber needs to be desorbed and regenerated by hot steam, so that the active vacancies on the surface of the activated carbon fiber are exposed again.
A temperature control meter, a liquid level meter and a flow meter are arranged in the mixed heating water tank 7, and hot water is conveyed to a water consumption unit through a hot water pipeline under the action of a hot water pump. The mixed heating water tank 7 heats tap water by using the heat sources 1-4, so that the heat utilization rate of the boiler 1 can be improved by using extremely low operation, and higher economic value is created.
The steam temperature of the hot steam inlet 62 of the activated carbon fiber adsorption tower 6 is controlled to be 150 ℃. The desorption of the activated carbon fiber has certain requirements on the temperature of hot steam: the temperature is too low, so that active vacancies on the surface of the activated carbon fiber cannot be exposed, and the regeneration of the activated carbon fiber is realized; the micro-mechanism of the activated carbon fiber is destroyed by the over-high temperature, so that the adsorption capacity is reduced.
Application example:
the boiler 1, the deaerator 2, the sewage discharge flash tank 3, the steam turbine 4, the waste heat boiler 5 and the activated carbon fiber adsorption tower 6 are all in working states.
The deaerator 2 is used for deaerating the boiler make-up water and collecting saturated water vapor discharged from a steam outlet to serve as a first heat source.
The blowdown flash tank 3 carries out blowdown decompression dilatation with boiler 1, and the blowdown water adiabatic expansion separates into secondary steam and useless hot water in the expander to through dilatation, step-down, heat exchange, then discharge in the expander, secondary steam is drawn forth by the steam extraction mouth, as the second heat source.
After passing through the fixed nozzle, the high-temperature and high-pressure steam exhausted by the boiler 1 is sprayed on the blades of the steam turbine 4 at a high speed to drive the blades to rotate and apply work to the outside, and the high-temperature steam escaping from the shaft sealing position of the steam turbine 4 is collected as a third heat source. The condenser 42 connected with the steam turbine 4 condenses the exhaust steam into water, the volume of the exhaust steam is suddenly reduced, high vacuum can be formed in the condenser 42, the extraction force of the steam in the steam turbine is greatly enhanced, the generated condensed water enters the cooling water tower 43 for storage, and the cooling water tower 43 can regulate and control the water replenishing of the boiler 1 and the boiler barrel 54 of the waste heat boiler 5 through the second electromagnetic valve 44.
The waste heat boiler 5 exchanges heat between the high-temperature flue gas generated by the boiler 1 and water, and the discharged low-temperature flue gas enters the activated carbon fiber adsorption tower 6 for desulfurization and denitrification after being dedusted by the deduster 61; the exhaust-heat boiler 5 can produce hot steam when discharging low temperature flue gas, and the hot steam can be adjusted and controlled through the first electromagnetic valve 55 to be used as a fourth heat source or supplied to the activated carbon fiber adsorption tower 6 for desorption.
The activated carbon fiber used by the activated carbon fiber adsorption tower 6 is used as an adsorption material, and after adsorption saturation, desorption regeneration is carried out by using hot steam, so that active vacancies on the surface of the activated carbon fiber are exposed again. The desorption can use the hot steam generated by the waste heat boiler 5, and the temperature of the hot steam is adjusted to 150 ℃ when the hot steam enters the activated carbon fiber adsorption tower 6. The waste heat utilization can obviously reduce the investment cost of a factory for the desulfurization and denitrification treatment of the flue gas, improve the economic benefit and protect the environment.
The mixed heating water tank 7 heats tap water by using the heat sources 1-4, can obtain a large amount of hot water with extremely low operation cost, and the hot water can be used for heating, bathing and the like in schools, factories and residential areas. The mixed heating water tank 7 can obtain a large amount of hot water with extremely low operation cost, thereby improving the heat utilization rate of the boiler 1 and creating higher economic value.
The utility model discloses to the complete utilization process of boiler heat gradient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (4)
1. A boiler heat gradient utilization device is characterized by comprising a boiler (1), a deaerator (2), a pollution discharge flash tank (3), a steam turbine (4), a waste heat boiler (5), an activated carbon fiber adsorption tower (6) and a mixed heating water tank (7);
the deaerator (2) is connected with the boiler (1) through a make-up water inlet (11), and a steam outlet of the deaerator (2) is connected with the mixed heating water tank (7) through a heat preservation pipe to serve as a first heat source;
the sewage flash tank (3) is connected with the boiler (1) through a boiler sewage discharge port (12), and a steam discharge port of the sewage flash tank (3) is connected with the mixed heating water tank (7) through a heat preservation pipe to serve as a second heat source;
the air inlet of the steam turbine (4) is connected with a high-pressure steam outlet (13) of the boiler (1) through a steam turbine shaft seal steam collecting device (41), the air outlet of the steam turbine (4) is connected with a cooling water tower (43) through a condenser (42), and the steam turbine shaft seal steam collecting device (41) is connected with a mixed heating water tank (7) through a heat preservation pipe and serves as a third heat source;
a smoke inlet (51) of the waste heat boiler (5) is connected with a waste gas discharge port of the boiler (1), a smoke outlet (52) of the waste heat boiler (5) is connected with the activated carbon fiber adsorption tower (6) through a dust remover (61), and a superheated steam outlet (53) of the waste heat boiler (5) is connected with the mixed heating water tank (7) through a heat preservation pipe and an electromagnetic valve (55) to serve as a fourth heat source;
and a hot steam inlet (62) of the activated carbon fiber adsorption tower (6) is connected with a superheated steam outlet (53) of the waste heat boiler (5) through an electromagnetic valve (55) by a heat preservation pipe.
2. The boiler heat gradient utilization device of claim 1, characterized in that a temperature control meter, a liquid level meter and a flow meter are arranged in the mixed heating water tank (7).
3. A boiler heat gradient utilization apparatus as claimed in claim 1, wherein the mixing and heating water tank (7) delivers the hot water to the water unit through the hot water pipe by the hot water pump.
4. A boiler heat gradient utilization device as claimed in claim 1, characterized in that the steam temperature at the hot steam inlet (62) of the activated carbon fiber adsorption tower (6) is controlled at 120-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598002.3U CN210088810U (en) | 2019-04-28 | 2019-04-28 | Boiler heat gradient utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598002.3U CN210088810U (en) | 2019-04-28 | 2019-04-28 | Boiler heat gradient utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210088810U true CN210088810U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920598002.3U Expired - Fee Related CN210088810U (en) | 2019-04-28 | 2019-04-28 | Boiler heat gradient utilization device |
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| CN (1) | CN210088810U (en) |
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2019
- 2019-04-28 CN CN201920598002.3U patent/CN210088810U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 214200 no.8-1, Czech Road, Yixing Economic Development Zone, Yixing City, Wuxi City, Jiangsu Province Patentee after: WUXI DOUBLE-WIN ENVIRONMENT SCIENCE TECHNOLOGY Co.,Ltd. Address before: Room 602, 88-2 Dongshan Road, Yicheng Street, Yixing City, Wuxi City, Jiangsu Province Patentee before: WUXI DOUBLE-WIN ENVIRONMENT SCIENCE TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 |