CN209967728U - Recovery system of dead steam condensate of steam turbine of PDH device - Google Patents
Recovery system of dead steam condensate of steam turbine of PDH device Download PDFInfo
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- CN209967728U CN209967728U CN201920640969.3U CN201920640969U CN209967728U CN 209967728 U CN209967728 U CN 209967728U CN 201920640969 U CN201920640969 U CN 201920640969U CN 209967728 U CN209967728 U CN 209967728U
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Abstract
The utility model provides a recovery system of a steam turbine exhaust steam condensate of a PDH device, which relates to the technical field of chemical devices and aims to solve the problem that a large amount of exhaust steam condensate of the steam turbine of the existing Propane Dehydrogenation (PDH) device in the prior art is discharged, so that the material consumption and the energy consumption of the PDH device are wasted greatly; the exhaust steam contains excessive liquid phase, so the heat exchange efficiency is low; the discharged condensate is clean demineralized water, discharges a large amount of water every day, causes the technical problem of the serious waste of resource, and the device includes turbine exhaust steam conveying pipeline and condensate collection device, wherein: the turbine exhaust steam conveying pipeline comprises a first outlet and a second outlet, the first outlet is connected with the inlet of the surface cooler through a first pipeline, and the second outlet is connected with the condensate collecting device through a second pipeline; the outlet of the condensate collecting device is connected with the inlet of the condensate pipe network through a condensate pipeline, and a steam trap is arranged on the condensate pipeline. The utility model is used for the recovery of PDH device steam turbine exhaust steam condensate recycles.
Description
Technical Field
The utility model belongs to the technical field of the chemical industry device technique and specifically relates to a recovery system of PDH device steam turbine exhaust condensate is related to.
Background
Most of the existing compressors are driven by a steam turbine, the steam turbine is a prime mover which directly converts heat energy of steam into rotational mechanical energy, exhaust steam of the steam turbine generates a large amount of condensate in transmission, and the exhaust steam condensate of the steam turbine of the existing Propane Dehydrogenation (PDH) device is discharged outside a large amount, so that the waste of material consumption and energy consumption of the PDH device is large; the exhaust steam contains excessive liquid phase, so the heat exchange efficiency is low; the discharged condensate is clean desalted water, and a large amount of water is discharged every day, so that the resource is seriously wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a recovery system of the steam turbine exhaust steam condensate of a PDH device, which aims to solve the problem that the existing Propane Dehydrogenation (PDH) device steam turbine exhaust steam condensate is discharged in large quantity in the prior art, so that the waste of material consumption and energy consumption of the PDH device is large; the exhaust steam contains excessive liquid phase, so the heat exchange efficiency is low; the discharged condensate is clean desalted water, and a large amount of water is discharged every day, so that the technical problem of serious waste of resources is caused. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a pair of recovery system of PDH device steam turbine exhaust steam condensate, including turbine exhaust steam conveying line and condensate collection device, wherein:
the turbine exhaust steam conveying pipeline comprises a first outlet and a second outlet, the first outlet is connected with an inlet of the surface cooler through a first pipeline, and the second outlet is connected with the condensate collecting device through a second pipeline;
the outlet of the condensate collecting device is connected with the inlet of the condensate pipe network through a condensate pipeline, and a steam trap is arranged on the condensate pipeline.
Preferably, a control valve is arranged on the second pipeline.
Preferably, the condensate line comprises a first branch condensate line and a second branch condensate line, wherein:
the outlet of the first branch condensate pipeline is connected to the outside through a pipeline;
the outlet of the second branch condensate pipeline is connected with the inlet of the condensate pipe network, and the steam trap is arranged on the second branch condensate pipeline.
Preferably, the condensate line, the first branch condensate line and the second branch condensate line are all provided with control valves.
Preferably, a first control valve and a second control valve are arranged on the second branch condensate pipeline, and the first control valve and the second control valve are respectively arranged at the water inlet end and the water outlet end of the steam trap.
Preferably, the condensate collecting device further comprises an air inlet, the air inlet is connected with the air storage tank through an air inlet pipeline, and the air inlet pipeline is provided with an adjusting valve.
Preferably, the gas in the gas storage tank is nitrogen.
Preferably, the system further comprises a deaerator, and an inlet of the deaerator is connected with an outlet of the condensate pipe network through a recovery pipeline.
Preferably, the steam trap adopts a floating ball type steam trap, and the caliber of the floating ball type steam trap is selected from DN25-DN 100.
The utility model provides a pair of recovery system of PDH device steam turbine exhaust steam lime set, condensate in through turbine exhaust steam is transmitted to the condensate tank and is collected, the problem that contains a large amount of water in avoiding the exhaust steam and lead to heat exchange efficiency low, arrange the condensate tank and change to external pipeline and be connected with the condensate pipe network, add the steam trap before the condensate pipe network is advanced in the drainage, condensate recovery has been avoided causing condensate pipe network pressure fluctuation, and retrieve the condensate of discharging and utilize, the problem of wasting of resources has been avoided, resources have effectively been practiced thrift and reduced PDH device thing consumption and energy consumption extravagant.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow diagram of an embodiment of a system for recovering spent steam condensate from a steam turbine of a PDH plant of the present invention;
in the figure: 1. a turbine exhaust steam conveying pipeline; 2. a condensate collection device; 3. a surface cooler; 4. a condensate line; 5. a condensate pipe network; 6. a steam trap; 7. an air intake line; 8. a gas storage tank; 9. a deaerator; 10. a recovery pipeline; 11. a first pipeline; 12. a second pipeline; 21. a control valve; 22. adjusting a valve; 41. a first branch condensate line; 42. a second branch condensate line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a recovery system of PDH device steam turbine exhaust steam condensate, figure 1 is the schematic structure of this embodiment, and as shown in figure 1, this recovery system of PDH device steam turbine exhaust steam condensate includes turbine exhaust steam conveying pipeline 1 and condensate collection device 2, wherein:
the turbine exhaust steam conveying pipeline 1 comprises a first outlet and a second outlet, the first outlet is connected with an inlet of the surface cooler 3 through a first pipeline 11, the second outlet is connected with the condensate collecting device 2 through a second pipeline 12, the condensate collecting device 2 adopts a condensate tank, turbine exhaust steam enters from the top of the condensate tank, condensate in the exhaust steam is collected in the condensate tank, the condensate is discharged from the bottom of the condensate tank, and dry turbine exhaust steam is transmitted to the downstream for heat exchange, so that the problem of low heat exchange efficiency is avoided;
the export of lime set collection device 2 passes through lime set pipeline 4 and the access connection of lime set pipe network 5, be equipped with steam trap 6 on lime set pipeline 4, arrange the condensate tank to external pipeline and change to and be connected with lime set pipe network 5, add steam trap 6 before the lime set pipe network 5 is advanced in the drainage, avoided lime set to retrieve and cause lime set pipe network 5 pressure oscillation, and retrieve the lime set of discharging and utilize, the problem of wasting of resources has been avoided, effectively practiced thrift the resource and reduced PDH device material consumption and energy consumption waste.
In an alternative embodiment, the control valve 21 is arranged on the second pipeline 12, after the turbine exhaust steam is collected by the condensate collecting device 2 and the condensate collecting device is full, the control valve 21 on the second pipeline 12 is closed to isolate the condensate collecting device 2 from the exhaust steam pipeline, and the control valve 21 on the second pipeline 12 is arranged to simply and effectively control the connection and disconnection between the condensate collecting device 2 and the exhaust steam pipeline.
As an alternative embodiment, the condensate line 4 comprises a first branch condensate line 41 and a second branch condensate line 42, wherein:
the outlet of the first branch condensate pipeline 41 is connected to the outside through a pipeline, in the actual production process, a liquid condensate pipeline 4 is reserved with a throwing head to be connected to a municipal well, and if the discharge path needs to be changed in the use process, the liquid condensate pipeline can be reconnected through the pipeline and changed at any time;
the export of second branch condensate line 42 and the entry linkage of condensate pipe network 5, steam trap 6 sets up on second branch condensate line 42, during the use, chooses the steam trap of suitable size for use, can effectively avoid the condensate to retrieve 5 pressure fluctuations of condensate pipe network that cause, and steam trap 6 adopts floating ball formula trap, and floating ball formula trap uses sensitively, and longe-lived, no steam leakage, and long service life, work quality is high.
The caliber of the floating ball type steam trap is DN25-DN100, when in use, the proper caliber of the floating ball type steam trap can be selected according to the actual requirement, in the embodiment, DN80 is preferably selected, the drainage time is saved, and the working quality is high.
Specifically, the condensate line 4, the first branch condensate line 41, and the second branch condensate line 42 are all provided with control valves.
As an optional embodiment, the second branch condensate line 42 is provided with a first control valve and a second control valve, which are respectively disposed at the water inlet end and the water outlet end of the steam trap, so as to adjust the flow rate of the steam trap, avoid pressure fluctuation of the condensate pipe network 5 caused by condensate recovery, and ensure the stability and reliability of the whole production process.
As an optional implementation manner, the condensate collecting device 2 further includes an air inlet, the air inlet is connected to the air storage tank 8 through an air inlet pipeline 7, the air inlet pipeline is provided with an adjusting valve 22, by setting the adjusting valve 22, the flow rate of the gas introduced into the condensate collecting device 2 can be controlled, so as to control the pressure in the condensate mobile phone device, the condensate is discharged from the outlet of the condensate collecting device 2 by using an external pressurization mode, the introduced gas may be clean air such as instrument air or other gases, in this embodiment, preferably, the gas in the air storage tank 8 is nitrogen, the pressure of the nitrogen is set to be 0.3-0.8Mpa, in an actual operation process, the setting is performed according to the pressure level of the own storage tank, it is sufficient to ensure that the condensate is discharged, and the condensate is discharged by introducing low-pressure nitrogen into the condensate collecting device 2 under the effect of the pressure.
As optional implementation mode, still include oxygen-eliminating device 9, the entry of oxygen-eliminating device 9 is connected through recovery pipeline 10 with the export of lime set pipe network 5, can carry out the deoxidization to the lime set after retrieving through setting up oxygen-eliminating device 9, and the lime set after the deoxidization is utilized again, has avoided the extravagant problem of resource, has effectively practiced thrift the resource and has reduced PDH device material consumption and energy consumption waste.
A recovery method of dead steam condensate of a steam turbine of a PDH device sequentially comprises the following steps:
the first step is as follows: collecting turbine exhaust steam through a condensate collecting device;
the second step is that: after the condensate collecting device is full, closing a control valve on the second pipeline to isolate the condensate collecting device from the exhaust steam pipeline;
the third step: pressurizing the condensate collecting device by opening a valve on the air inlet pipeline, and discharging the condensate from an outlet of the condensate collecting device;
the fourth step: the discharged condensate is regulated by a steam trap and is recycled through a condensate pipe network communicated with the second branch condensate pipeline.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a recovery system of PDH device steam turbine exhaust steam condensate which characterized in that, includes turbine exhaust steam conveying line and condensate collection device, wherein:
the turbine exhaust steam conveying pipeline comprises a first outlet and a second outlet, the first outlet is connected with an inlet of the surface cooler through a first pipeline, and the second outlet is connected with the condensate collecting device through a second pipeline;
the outlet of the condensate collecting device is connected with the inlet of the condensate pipe network through a condensate pipeline, and a steam trap is arranged on the condensate pipeline.
2. A recovery system for dead steam condensate of a steam turbine of a PDH device as defined in claim 1, wherein: and a control valve is arranged on the second pipeline.
3. A recovery system for dead steam condensate of a steam turbine of a PDH plant as defined in claim 1 or claim 2, wherein: the condensate line includes a first branch condensate line and a second branch condensate line, wherein:
the outlet of the first branch condensate pipeline is connected to the outside through a pipeline;
the outlet of the second branch condensate pipeline is connected with the inlet of the condensate pipe network, and the steam trap is arranged on the second branch condensate pipeline.
4. A recovery system for dead steam condensate of a steam turbine of a PDH device as defined in claim 3, wherein: and the condensate pipeline, the first branch condensate pipeline and the second branch condensate pipeline are all provided with control valves.
5. A recovery system for dead steam condensate of a steam turbine of a PDH plant as defined in claim 4, wherein: and a first control valve and a second control valve are arranged on the second branch condensate pipeline, and the first control valve and the second control valve are respectively arranged at the water inlet end and the water outlet end of the steam trap.
6. A recovery system for dead steam condensate of a steam turbine of a PDH device as defined in claim 1, wherein: the condensate collecting device further comprises an air inlet, the air inlet is connected with the air storage tank through an air inlet pipeline, and the air inlet pipeline is provided with a regulating valve.
7. A recovery system for dead steam condensate of a steam turbine of a PDH device as defined in claim 6, wherein: the gas in the gas storage tank is nitrogen.
8. A recovery system for dead steam condensate of a steam turbine of a PDH device as defined in claim 1, wherein: still include the oxygen-eliminating device, the entry of oxygen-eliminating device with the export of lime set pipe network is connected through the recovery pipeline.
9. A recovery system for dead steam condensate of a steam turbine of a PDH device as defined in claim 1, wherein: the steam trap adopts a floating ball type steam trap, and the caliber of the floating ball type steam trap is DN25-DN 100.
10. A recovery system for dead steam condensate of a steam turbine of a PDH device as defined in claim 9, wherein: the caliber of the floating ball type drain valve is DN 80.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640969.3U CN209967728U (en) | 2019-05-07 | 2019-05-07 | Recovery system of dead steam condensate of steam turbine of PDH device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920640969.3U CN209967728U (en) | 2019-05-07 | 2019-05-07 | Recovery system of dead steam condensate of steam turbine of PDH device |
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| CN209967728U true CN209967728U (en) | 2020-01-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999530A (en) * | 2019-05-07 | 2019-07-12 | 天津渤海石化有限公司 | A kind of recovery system and method for PDH device steam turbine steam exhaust lime set |
| CN114471070A (en) * | 2022-02-18 | 2022-05-13 | 广东韶钢松山股份有限公司 | Condensate collecting unit and acid making system |
-
2019
- 2019-05-07 CN CN201920640969.3U patent/CN209967728U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999530A (en) * | 2019-05-07 | 2019-07-12 | 天津渤海石化有限公司 | A kind of recovery system and method for PDH device steam turbine steam exhaust lime set |
| CN114471070A (en) * | 2022-02-18 | 2022-05-13 | 广东韶钢松山股份有限公司 | Condensate collecting unit and acid making system |
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