CN218469066U - Deaerator heating steam cascade utilization system in back pressure steam turbine cogeneration - Google Patents
Deaerator heating steam cascade utilization system in back pressure steam turbine cogeneration Download PDFInfo
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- CN218469066U CN218469066U CN202222939104.1U CN202222939104U CN218469066U CN 218469066 U CN218469066 U CN 218469066U CN 202222939104 U CN202222939104 U CN 202222939104U CN 218469066 U CN218469066 U CN 218469066U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The utility model discloses a deaerator heating steam step utilizes system among backpressure steam turbine combined heat and power, include demineralized water make-up water pipeline and deaerator heating steam pipeline that are linked together with former system deaerator, its characterized in that: the system also comprises a preposed atmosphere deaerator, wherein the preposed atmosphere deaerator is communicated with a desalted water pipeline and a deaerator heating steam pipeline, the desalted water pipeline and the deaerator heating steam pipeline are both communicated with a desalted water replenishing water pipeline, and a preposed water pump is also arranged on the deaerator heating steam pipeline; the utility model relates to a backpressure steam turbine cogeneration of heat and power engineering technical field adopts leading oxygen-eliminating device and merit hot type steam turbine, generates electricity with the pressure differential that forms between the heating steam of high parameter oxygen-eliminating device and the required heating steam of low parameter oxygen-eliminating device, has fully embodied the step utilization of differential pressure, has reduced the station service consumption cost of enterprise to the deoxidization effect of system has been improved, and is more abundant to the deoxidization of demineralized water make-up water.
Description
Technical Field
The utility model belongs to the technical field of backpressure steam turbine combined heat and power generation engineering, specifically be oxygen-eliminating device heating steam step utilization system among backpressure steam turbine combined heat and power generation.
Background
At the state of the art, cogeneration is one of the most economical ways of utilizing fuel. The method is a mode of gradient utilization of energy, basically achieves energy quality matching, accords with the principle of utilizing heat energy according to quality, and can effectively improve the energy conversion efficiency and the economic benefit of a power plant.
In the heat and power cogeneration project of the backpressure steam turbine, externally supplied steam cannot be recovered, so a large amount of desalted water needs to be supplemented to the deaerator in the system. The temperature of desalted water is lower (generally 25-30 ℃), the temperature of the water discharged from the deaerator is higher, so that the temperature of the deaerator for heating steam is also higher, and energy waste is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a deaerator heating steam step utilizes system among backpressure steam turbine combined heat and power to solve the problem that provides among the above-mentioned background art.
The utility model adopts the technical scheme as follows:
deaerator heating steam cascade utilizes system in backpressure steam turbine combined heat and power generation, including the demineralized water make-up water pipeline and the deaerator heating steam pipeline that are linked together with former system deaerator, its characterized in that: also comprises a preposed atmospheric deaerator which is communicated with a desalted water pipeline and a deaerator heating steam pipeline, the desalted water pipeline and the deaerator heating steam pipeline are both communicated with a desalted water replenishing water pipeline, and a preposed water pump is further arranged on the deaerator heating steam pipeline;
leading atmosphere oxygen-eliminating device still communicates and is provided with low pressure heating steam conduit, it has merit thermal turbo generator and high pressure heating steam conduit to communicate in proper order on the low pressure heating steam conduit, high pressure heating steam conduit is linked together with oxygen-eliminating device heating steam conduit.
Preferably, the original system deaerator is a medium-pressure/high-pressure deaerator.
Preferably, the power-heating steam turbine generator is a synchronous power generation steam turbine or an asynchronous power generation steam turbine.
Preferably, the work-heating steam turbine generator adopts a low-pressure back pressure steam turbine.
Preferably, the preposed atmosphere deaerator adopts a rotary membrane deaerator, is a thermal deaerator, and separates out an oxygen dissolved in water by utilizing Henry or Dalton law to achieve the effect of removing oxygen in water, and comprises a deaerating head on the upper part and a deaerating water tank on the lower part, wherein the deaerating head comprises the rotary membrane deaerator, a water grate and a filler.
Preferably, the preposed water pump adopts a variable frequency adjustment centrifugal pump.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses in, adopt leading oxygen-eliminating device and merit hot type steam turbine, generate electricity with the pressure differential that forms between the heating steam of high parameter oxygen-eliminating device and the required heating steam of low parameter oxygen-eliminating device, fully embodied the step utilization of differential pressure, reduced the station service power consumption cost of enterprise to improve the deoxidization effect of system, it is more abundant to the deoxidization of demineralized water make-up water.
Drawings
FIG. 1 is a system framework diagram of the present invention;
in the figure: 01. an original system deaerator; 02. a demineralized water makeup water conduit; 03. the deaerator heats the steam pipeline; 1. a demineralized water conduit; 2. a preposed atmospheric deaerator; 3. a condensate pipeline; 4. a front water pump; 5. High pressure heating of the steam line; 6. a power-heated steam turbine generator; 7. the steam line is heated at low pressure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1:
this embodiment provides the concrete structure that deaerator heating steam cascade utilized the system among backpressure steam turbine combined heat and power, as shown in fig. 1, including the demineralized water make-up water pipeline 02 and the deaerator heating steam pipeline 03 that are linked together with former system deaerator 01, its characterized in that: the device is characterized by further comprising a preposed atmosphere deaerator 2, wherein the preposed atmosphere deaerator 2 is communicated with a desalted water pipeline 1 and a deaerator heating steam pipeline 03, the desalted water pipeline 1 and the deaerator heating steam pipeline 03 are both communicated with a desalted water replenishing water pipeline 02, and a preposed water pump 4 is further arranged on the deaerator heating steam pipeline 03;
leading atmosphere oxygen-eliminating device 2 still communicates and is provided with low pressure heating steam pipe 7, and the low pressure heats and is provided with merit on the steam pipe 7 and heats steam pipe 5 with high pressure in proper order the intercommunication, and high pressure heating steam pipe 5 is linked together with oxygen-eliminating device heating steam pipe 03.
Further, the deaerator 01 of the original system is a medium-voltage/high-voltage deaerator.
Further, the power-heating steam turbine generator 6 is a synchronous power generation steam turbine or an asynchronous power generation steam turbine.
Further, the power-heating steam turbine generator 6 adopts a low-pressure back pressure steam turbine.
Furthermore, the preposed atmosphere deaerator 2 adopts a rotary membrane deaerator, the preposed atmosphere deaerator 2 is a thermal deaerator, the effect of removing oxygen in water is achieved by separating out the oxygen dissolved in water by utilizing the Henry law or the Dalton law, the preposed atmosphere deaerator 2 comprises a deaerating head on the upper portion of the preposed atmosphere deaerator and a deaerating water tank on the lower portion of the preposed atmosphere deaerator, and the deaerating head comprises the rotary membrane deaerator, a water grate and a filler.
Furthermore, the preposed water pump 4 adopts a variable frequency adjusting centrifugal pump.
Furthermore, the temperature of the desalted water replenishing water (in the desalted water replenishing water pipeline 02) is increased to 104 ℃, and then the desalted water replenishing water enters a medium-pressure or high-pressure deaerator (an original system deaerator 01) to further increase the water temperature to 133-143 ℃ (the outlet water temperature of the medium-pressure deaerator is 133-143 ℃) or 160 ℃ (the outlet water temperature of the high-pressure deaerator is 160 ℃), so that the temperature of the desalted water replenishing water is increased.
The working principle, referring to fig. 1, when in use, the demineralized water is connected with a demineralized water inlet on a deoxygenation head of a preposed atmospheric deoxygenator 2 through a demineralized water pipeline 1. The original system steam is connected with a power-heating steam turbine generator 6 through a high-pressure steam pipeline 5, and the exhaust steam after the steam works and generates electricity in the power-heating steam turbine generator 6 is connected with a steam inlet on a deaerating head of the preposed atmospheric deaerator 2 through a low-pressure heating steam pipeline 7. The steam condensate and the deaerated water are mixed in the deaerated water tank at the lower part of the preposed atmosphere deaerator 2 and then are provided with a preposed water pump 4 through a condensate pipeline 3, and the condensate is boosted through the preposed water pump 4 and then is connected to an original demineralized water system through the condensate pipeline 3.
The preposed atmospheric deaerator 1 is added on the water charging system of the original medium/high pressure deaerator, the temperature of desalted water is increased to 104 ℃ from 30 ℃, the water charging temperature of the original medium/high pressure deaerator is improved, the heating steam quantity of the original medium/high pressure deaerator can be reduced, the reduced steam can be used for the preposed atmospheric deaerator 1, and the heating steam pressure (0.3 MPa-0.6 MPa) of the original medium/high pressure deaerator is higher than the pressure (0.118 MPa) required by the preposed atmospheric deaerator 1, so that the partial differential pressure can be utilized for doing work and generating power. The differential pressure formed between the heating steam of the high-parameter deaerator and the heating steam required by the low-parameter deaerator is used for generating electricity, so that the gradient utilization of the differential pressure is fully reflected, the service power consumption cost of enterprises is reduced, and the deaerating effect of the system is improved.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. Deaerator heating steam cascade utilizes system in backpressure steam turbine combined heat and power generation, includes demineralized water make-up water pipeline (02) and deaerator heating steam pipeline (03) that are linked together with former system deaerator (01), its characterized in that: the device is characterized by further comprising a preposed atmospheric deaerator (2), wherein the preposed atmospheric deaerator (2) is communicated with a desalted water pipeline (1) and a deaerator heating steam pipeline (03), the desalted water pipeline (1) and the deaerator heating steam pipeline (03) are both communicated with a desalted water replenishing water pipeline (02), and a preposed water pump (4) is further arranged on the deaerator heating steam pipeline (03);
leading atmosphere oxygen-eliminating device (2) still communicates and is provided with low pressure heating steam pipe way (7), it has merit heat turbo generator (6) and high pressure heating steam pipe way (5) to communicate in proper order on low pressure heating steam pipe way (7), high pressure heating steam pipe way (5) are linked together with oxygen-eliminating device heating steam pipe way (03).
2. The deaerator heating steam cascade utilization system in the cogeneration of back pressure turbine heat and power of claim 1, characterized in that: the original system deaerator (01) is a medium-voltage/high-voltage deaerator.
3. The deaerator heating steam cascade utilization system in the cogeneration of back pressure steam turbine of claim 1, characterized in that: the power-heating steam turbine generator (6) is a synchronous power generation steam turbine or an asynchronous power generation steam turbine.
4. The deaerator heating steam cascade utilization system in the cogeneration of back pressure turbine heat and power of claim 1, characterized in that: the power-heating steam turbine generator (6) adopts a low-pressure back pressure steam turbine.
5. The deaerator heating steam cascade utilization system in the cogeneration of back pressure turbine heat and power of claim 1, characterized in that: leading atmosphere oxygen-eliminating device (2) adopt the cyclone film oxygen-eliminating device, leading atmosphere oxygen-eliminating device (2) are thermal power type oxygen-eliminating device, utilize henry or dalton law to dissolve the oxygen ware in aqueous and isolate and reach the effect of detaching aquatic oxygen, leading atmosphere oxygen-eliminating device (2) are including the deoxidization head on its upper portion and the deoxidization water tank of lower part, and the deoxidization head is including cyclone film ware, water grate, filler.
6. The deaerator heating steam cascade utilization system in the cogeneration of back pressure steam turbine of claim 1, characterized in that: the preposed water pump (4) adopts a variable frequency adjusting centrifugal pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222939104.1U CN218469066U (en) | 2022-11-04 | 2022-11-04 | Deaerator heating steam cascade utilization system in back pressure steam turbine cogeneration |
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| CN202222939104.1U CN218469066U (en) | 2022-11-04 | 2022-11-04 | Deaerator heating steam cascade utilization system in back pressure steam turbine cogeneration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759924A (en) * | 2024-01-23 | 2024-03-26 | 上海金联热电有限公司 | High-pressure deaerator steam heat cooperative cascade utilization equipment and system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759924A (en) * | 2024-01-23 | 2024-03-26 | 上海金联热电有限公司 | High-pressure deaerator steam heat cooperative cascade utilization equipment and system thereof |
| CN117759924B (en) * | 2024-01-23 | 2024-05-14 | 上海金联热电有限公司 | High-pressure deaerator steam heat cooperative cascade utilization equipment and system thereof |
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