CN115823567B - Continuous drainage upgrading recovery system - Google Patents
Continuous drainage upgrading recovery system Download PDFInfo
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- CN115823567B CN115823567B CN202211377872.0A CN202211377872A CN115823567B CN 115823567 B CN115823567 B CN 115823567B CN 202211377872 A CN202211377872 A CN 202211377872A CN 115823567 B CN115823567 B CN 115823567B
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- heat exchanger
- pipe connection
- exhaust steam
- pipeline
- condenser
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- 238000011084 recovery Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000002699 waste material Substances 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 18
- 239000007789 gas Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a continuous drainage upgrading recovery system which comprises a condenser, wherein the condenser is connected with an ejector through a pipeline, the ejector is connected with a high-pressure deaerator exhaust pipe through a pipeline, waste steam enters the ejector from the high-pressure deaerator exhaust pipe, the waste steam is used as a power source of the ejector, electric energy is saved, the high-pressure deaerator and waste heat recovery of the waste steam continuous drainage are organically combined, a device is simplified, the waste steam and non-condensable gas energy are combined and utilized, two-stage concentration of the continuous drainage is realized, pure water in the continuous drainage is extracted to the maximum extent, liquid at the bottom of a separation tank is separated again after being evaporated through a waste steam heat exchanger, and the volume of the separation tank is effectively reduced.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a continuous drainage upgrading and recycling system.
Background
In order to ensure the safety of the unit and the economical operation of the power plant, strict requirements are placed on the cleanliness of the steam, and for this purpose, the boiler is provided with a blowdown device and a deaerator evacuation device. Under the normal condition, the pollution discharge rate of the condensing power plant is 1% -2%, the pollution discharge rate of the thermal power plant is 2% -5%, the exhaust steam of the deaerator accounts for 4% of the inlet water, the part of working medium contains a large amount of heat energy, and meanwhile, part of desalted water can not be recovered along with pollution discharge and exhaust steam discharge.
In the prior art, electric energy is used as a power source of the ejector, and the electric energy is required to be continuously supplied to equipment, so that more electric energy is required to be consumed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a continuous drainage upgrading recovery system which comprises a condenser and an outlet pipeline of a continuous blowdown flash vessel, wherein the condenser is connected with an ejector through a pipeline, and the ejector is connected with a high-pressure deaerator exhaust pipe through a pipeline.
As a further description of the above, the outlet conduit of the continuous blowdown flash vessel is connected to a flash tank.
As a further description of the above, the flash tank is piped to a low pressure deaerator and the flash tank is piped to a separator tank.
As a further description of the above, the separation tank is connected to the condenser by a pipe, the condenser is connected to the water tank by a pipe, and the separation tank is connected to the concentrate heat exchanger by a pipe.
As a further description of the scheme, the ejector is connected with the exhaust steam heat exchanger through a pipeline, and the exhaust steam heat exchanger is connected with the separation tank through a pipeline.
As further description of the scheme, the exhaust steam heat exchanger is connected with the exhaust steam condensate heat exchanger through a pipeline, and the exhaust steam condensate heat exchanger is connected with the water tank through a pipeline.
As further description of the scheme, the water tank is provided with a non-condensable gas outlet, and the water tank is provided with a waste steam condensate outlet.
As a further description of the above solution, the condenser is connected to the concentrated water heat exchanger by a pipe, and the concentrated water heat exchanger is connected to the low pressure deaerator by a pipe.
As further description of the scheme, the condenser is connected with the exhaust steam condensate heat exchanger through a pipeline, and the exhaust steam condensate heat exchanger is connected with the low-pressure deaerator through a pipeline.
As further description of the scheme, a condensate pump is arranged inside the water tank, and the water tank pipeline is connected with a deaerator water inlet pipe.
The invention has the technical effects and advantages that:
the exhaust steam is used as a power source of the ejector, power supply is not needed, and electric energy is saved.
Drawings
Fig. 1 is a schematic diagram of a continuous drainage upgrading recovery system according to an embodiment of the present application.
In the figure: 1. a flash tank; 2. a separation tank; 3. a condenser; 4. an ejector; 5. a dead steam heat exchanger; 6. a dead steam condensate heat exchanger; 7. a concentrated water heat exchanger; 8. a water tank.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1, in this embodiment, a continuous drainage quality improvement recovery system is provided, including a flash tank 1, an outlet pipeline of a continuous blowdown flash tank is connected with the flash tank 1, the flash tank 1 is connected with a low-pressure deaerator through a pipeline, the flash tank 1 is connected with a separation tank 2 through a pipeline, the separation tank 2 is connected with a condenser 3 through a pipeline, the condenser 3 is connected with a water tank 8 through a pipeline, the separation tank 2 is connected with a concentrated water heat exchanger 7 through a pipeline, after continuous drainage enters the flash tank 1 for primary purification, steam enters the low-pressure deaerator as a supplementary air source, continuous drainage concentrated water enters the separation tank 2 for secondary separation, separated steam is cooled by a dead steam heat exchanger 5, condensed water formed after the steam is condensed by the condenser 3 enters the water tank 8, noncondensable gas is formed after the condensation, and the separated continuous drainage concentrated water is discharged to an inlet pipeline of the regular blowdown flash tank after the cooling treatment by the concentrated water heat exchanger 7.
The condenser 3 passes through the pipe connection ejector 4, the ejector 4 passes through the pipe connection high-pressure deaerator blast pipe, the ejector 4 passes through the pipe connection exhaust steam heat exchanger 5, exhaust steam heat exchanger 5 passes through pipe connection knockout drum 2, exhaust steam heat exchanger 5 passes through pipe connection exhaust steam condensate heat exchanger 6, exhaust steam condensate heat exchanger 6 passes through pipe connection water tank 8, be equipped with the discharge port on the water tank 8, be equipped with exhaust steam condensate discharge port on the water tank 8, exhaust steam and noncondensable gas are drawn together at the ejector 4 and are penetrated into knockout drum 2 after the ejector 4 draws together through exhaust steam heat exchanger 5 heating, knockout drum 2 secondary separation, reentry exhaust steam heat exchanger 5 cooling after the separation, enter into water tank 8 after the cooling through exhaust steam condensate heat exchanger 6 heating, noncondensable gas is discharged from the discharge port of water tank 8 after the heating.
The condenser 3 passes through the pipe connection dense water heat exchanger 7, dense water heat exchanger 7 passes through the pipe connection low pressure oxygen-eliminating device, the condenser 3 passes through the exhaust steam congeals water heat exchanger 6 through the pipe connection, exhaust steam congeals water heat exchanger 6 passes through the pipe connection and goes to the low pressure oxygen-eliminating device, the turbine comdenstion water enters into dense water heat exchanger 7 from the low pressure oxygen-eliminating device and cools down the processing, enter into exhaust steam congeals water heat exchanger 6 after cooling down, exhaust steam congeals water heat exchanger 6 returns to the low pressure oxygen-eliminating device again after heat treatment.
The inside condensate pump that is equipped with of water tank 8, the deaerator inlet tube is connected to water tank 8 pipeline, and the flooding steam condensate and the steam condensate in 8 with the water tank through the condensate pump transport to the deaerator inlet tube.
The working principle of the invention is as follows: the continuous drainage enters the flash tank 1 from an outlet pipeline of a continuous blowdown flash tank, the flash tank 1 is subjected to primary purification, the formed water vapor is used as a supplementary air source of a low-pressure deaerator, the continuous drainage concentrated water enters the separation tank 2 from the flash tank 1, the separation tank 2 is separated, the separated steam enters the condenser 3 for condensation, condensed water formed after condensation enters the water tank 8, the separated continuous drainage concentrated water enters the concentrated water heat exchanger 7 and is discharged after cooling treatment by the concentrated water heat exchanger 7, non-condensable gas formed after condensation by the condenser 3 enters the ejector 4, exhaust gas enters the ejector 4 from an exhaust pipe of the high-pressure deaerator, the non-condensable gas and exhaust gas enter the exhaust steam heat exchanger 5 after being ejected by the ejector 4, the exhaust steam enters the separation tank 2 after being heated by the exhaust steam heat exchanger 5, the separation tank 2 is subjected to secondary separation, the separated steam enters the exhaust steam heat exchanger 5 again, the condensed water enters the exhaust steam heat exchanger 6 after cooling by the exhaust steam heat exchanger 5, the condensed water tank 8 after heating by the exhaust steam heat exchanger 6, the water tank 8 is discharged after cooling treatment, the non-condensable gas enters the ejector 4 from the exhaust steam heat exchanger, the exhaust steam heat exchanger 6 enters the exhaust steam heat exchanger 6 after being heated by the exhaust steam heat exchanger 6, the exhaust steam heat exchanger enters the exhaust steam heat exchanger 6, and enters the exhaust steam heat exchanger 6 after entering the exhaust heat exchanger 6, and enters the exhaust steam heat exchanger 6 after the exhaust heat, and enters the exhaust steam heat exchanger 6, and enters the exhaust heat exchanger after the exhaust steam heat exchanger and enters the exhaust heat exchanger 6, and enters the exhaust heat exchanger and enters the water circulation through the exhaust heat pipe.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (5)
1. The utility model provides a continuous drainage upgrading recovery system, includes condenser (3), the export pipeline of continuous blowdown flash vessel, its characterized in that, condenser (3) pass through pipe connection ejector (4), ejector (4) pass through pipe connection high-pressure deaerator blast pipe, the export pipe connection flash tank (1) of continuous blowdown flash vessel, flash tank (1) pipe connection goes the low-pressure deaerator, flash tank (1) pass through pipe connection knockout drum (2), knockout drum (2) pass through pipe connection condenser (3), condenser (3) pass through pipe connection water tank (8), knockout drum (2) pass through pipe connection dense water heat exchanger (7), ejector (4) pass through pipe connection exhaust steam heat exchanger (5), exhaust steam heat exchanger (5) pass through pipe connection knockout drum (2), exhaust steam heat exchanger (5) pass through pipe connection exhaust steam condensate heat exchanger (6), exhaust steam condensate heat exchanger (6) pass through pipe connection water tank (8).
2. The continuous drainage upgrading recovery system according to claim 1, wherein the water tank (8) is provided with a non-condensable gas outlet, and the water tank (8) is provided with a waste steam condensate outlet.
3. The continuous drainage upgrading recovery system according to claim 2, wherein the condenser (3) is connected with the concentrated water heat exchanger (7) through a pipeline, and the concentrated water heat exchanger (7) is connected with the low-pressure deaerator through a pipeline.
4. A continuous drainage upgrading recovery system according to claim 3, wherein the condenser (3) is connected with the exhaust steam condensate heat exchanger (6) through a pipeline, and the exhaust steam condensate heat exchanger (6) is connected with the low-pressure deaerator through a pipeline.
5. The continuous drainage upgrading recovery system according to claim 4, wherein a condensate pump is arranged inside the water tank (8), and the water tank (8) is connected with a deaerator water inlet pipe through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211377872.0A CN115823567B (en) | 2022-11-04 | 2022-11-04 | Continuous drainage upgrading recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211377872.0A CN115823567B (en) | 2022-11-04 | 2022-11-04 | Continuous drainage upgrading recovery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115823567A CN115823567A (en) | 2023-03-21 |
| CN115823567B true CN115823567B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211377872.0A Active CN115823567B (en) | 2022-11-04 | 2022-11-04 | Continuous drainage upgrading recovery system |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165399B (en) * | 2007-08-07 | 2010-11-03 | 江苏工业学院 | Boiler low grade residual heat combined reclamation method and device |
| RU2412358C1 (en) * | 2009-08-17 | 2011-02-20 | Государственное образовательное учреждение высшего профессионального образования Самарский государственный технический университет | Plant for preparing make-up water of combined electric power-and-heat generating plant with open heat-extraction system |
| CN205957142U (en) * | 2016-07-30 | 2017-02-15 | 河南晋煤天庆煤化工有限责任公司 | High -pressure deaerator remains vapour power generation system |
| CN208398056U (en) * | 2018-06-12 | 2019-01-18 | 浙江瀚玖节能科技有限公司 | Energy saving dead steam recovery system suitable for boiler deoxidizing method |
| CN208871597U (en) * | 2018-09-28 | 2019-05-17 | 唐山三友化工股份有限公司 | A kind of power plant's high and low pressure oxygen-eliminating device joint dead steam recovery system |
| CN217441618U (en) * | 2022-03-15 | 2022-09-16 | 国家能源集团宁夏煤业有限责任公司 | Exhaust steam recycling system |
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- 2022-11-04 CN CN202211377872.0A patent/CN115823567B/en active Active
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| CN115823567A (en) | 2023-03-21 |
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