CN111963901B - Control system for providing steam for PTA device without self-produced steam - Google Patents
Control system for providing steam for PTA device without self-produced steam Download PDFInfo
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- CN111963901B CN111963901B CN202010819785.0A CN202010819785A CN111963901B CN 111963901 B CN111963901 B CN 111963901B CN 202010819785 A CN202010819785 A CN 202010819785A CN 111963901 B CN111963901 B CN 111963901B
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- pta
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Abstract
The invention provides a control system for supplying steam to a PTA device without self-produced steam, which supplies steam to the PTA device without self-produced steam through a PTA first-line production device, a PTA second-line production device and a PTA third-line production device which can self-produce steam; the PTA first-line production device, the PTA second-line production device and the PTA third-line production device comprise reactor tail gas coolers for generating steam, the steam generated by the reactor tail gas coolers is collected to a pipe gallery through pipelines respectively, and the pipe gallery is communicated to the PTA device without self-generated steam; the PTA first-line production device, the PTA second-line production device and the PTA third-line production device respectively comprise an external steam supply valve, an external steam supply pressure sensor and an external steam supply controller. According to the invention, by controlling the PTA production line capable of self-producing steam, redundant steam is provided to the PTA production line incapable of self-producing steam, so that the production cost is reduced and energy waste is prevented.
Description
Technical Field
The invention relates to the field of PTA (pure terephthalic acid) plant equipment, in particular to a control system for providing steam for a PTA device without self-produced steam.
Background
The PTA production line in the current PTA factory all can produce MS steam certainly for all MS users use in supplying the device, and have the surplus after using, but to the PTA production line that can not produce MS steam certainly, the MS steam that its during operation need use if all by the power plant supply, then can increase the cost and waste the energy, consequently need provide a steam control system control can produce the PTA production line of MS steam certainly and provide MS steam for the PTA production line that can not produce MS steam certainly, thereby reach the purpose of cost reduction energy saving.
Disclosure of Invention
In light of the above-identified technical problems in a PTA production line that is incapable of self-producing MS steam, a control system for providing steam to a PTA plant that is not self-producing steam is provided.
The technical means adopted by the invention are as follows:
a control system for providing steam to a PTA plant without self-produced steam, the steam being provided to the PTA plant without self-produced steam by a PTA primary production plant, a PTA secondary production plant, and a PTA tertiary production plant capable of self-producing steam;
the PTA first-line production device, the PTA second-line production device and the PTA third-line production device comprise reactor tail gas coolers for generating steam, the steam generated by the reactor tail gas coolers of the PTA first-line production device, the PTA second-line production device and the PTA third-line production device is collected to a pipe gallery through pipelines respectively, the pipe gallery is communicated to the PTA device without self-generated steam, and the steam is conveyed to the PTA device without self-generated steam through the pipe gallery for use by a user;
a reactor tail gas cooler of the PTA three-way production device is communicated to a pipeline of the pipe gallery and is provided with a three-way external steam supply valve, a three-way external steam supply pressure sensor and a three-way external steam supply controller, and the three-way external steam supply controller can adjust the opening of the three-way external steam supply valve according to three-way external steam supply pressure information detected by the three-way external steam supply pressure sensor;
a reactor tail gas cooler of the PTA second-line production device is communicated to a pipeline of the pipe gallery and is provided with a second-line external steam supply valve, a second-line external steam supply pressure sensor and a second-line external steam supply controller, and the second-line external steam supply controller can adjust the opening of the second-line external steam supply valve according to second-line external steam supply pressure information detected by the second-line external steam supply pressure sensor;
a reactor tail gas cooler of the PTA first-line production device is communicated to a pipeline of the pipe gallery and is provided with a first-line external steam supply valve, a first-line external steam supply pressure sensor and a first-line external steam supply controller, and the first-line external steam supply controller can adjust the opening of the first-line external steam supply valve according to first-line external steam supply pressure information detected by the first-line external steam supply pressure sensor;
when the PTA first-line production device, the PTA second-line production device and the PTA third-line production device work normally, the first-line external steam supply valve and the second-line external steam supply valve are kept at fixed opening degrees, and the three-line external steam supply controller adjusts the opening degree of the three-line external steam supply valve according to the three-line external steam supply pressure information to ensure that the steam pressure conveyed to the PTA device without self-produced steam is stable;
when the PTA three-line production device stops, the three-line external steam supply valve is manually closed, and the opening of the two-line external steam supply valve is adjusted by the two-line external steam supply controller according to the two-line external steam supply pressure information, so that the steam pressure conveyed to the PTA device without self-produced steam is ensured to be stable; or the one-line external steam supply controller adjusts the opening of the one-line external steam supply valve according to the one-line external steam supply pressure information to ensure that the steam pressure conveyed to the PTA device without self-generated steam is stable.
Further, the users requiring steam use in the self-steam-producing-free PTA apparatus include: the system comprises a catalyst recovery unit, an air compressor unit vacuumizing system, a tail gas drying system and a stripping tower reboiler.
Further, when the PTA three-line production device is stopped and the steam pressure is ensured to be stable by the two-line external steam supply valve, the one-line external steam supply valve is opened to ensure that the steam quantity delivered to the PTA device without self-produced steam is enough;
or when the PTA three-line production device stops and the first-line external steam supply valve ensures that the steam pressure is stable, the second-line external steam supply valve is opened to ensure that the steam quantity delivered to the PTA device without self-produced steam is enough.
Compared with the prior art, the invention has the following advantages:
according to the control system for providing the steam for the PTA device without the self-produced steam, provided by the invention, the excess steam is provided to the PTA production line incapable of self-producing steam by controlling the PTA production line capable of self-producing steam, the requirement of the PTA production line on the steam is met, meanwhile, the waste of energy is prevented, and meanwhile, the production cost can be reduced because the steam is not required to be obtained from a power plant.
Based on the reasons, the invention can be widely popularized in the field of PTA factory equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 block diagram of a control system for providing steam to a PTA plant without self-generated steam according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the present invention provides a control system for supplying steam to a PTA plant without self-produced steam, by a PTA first line production plant, a PTA second line production plant and a PTA third line production plant capable of self-producing steam;
the PTA first-line production device, the PTA second-line production device and the PTA third-line production device comprise reactor tail gas coolers for generating steam, the steam generated by the reactor tail gas coolers of the PTA first-line production device, the PTA second-line production device and the PTA third-line production device is collected to a pipe gallery through pipelines respectively, the pipe gallery is communicated to the PTA device without self-generated steam, and the steam is conveyed to the PTA device without self-generated steam through the pipe gallery for use by a user;
a reactor tail gas cooler of the PTA three-way production device is communicated to a pipeline of the pipe gallery and is provided with a three-way external steam supply valve, a three-way external steam supply pressure sensor and a three-way external steam supply controller, and the three-way external steam supply controller can adjust the opening of the three-way external steam supply valve according to three-way external steam supply pressure information detected by the three-way external steam supply pressure sensor;
a reactor tail gas cooler of the PTA second-line production device is communicated to a pipeline of the pipe gallery and is provided with a second-line external steam supply valve, a second-line external steam supply pressure sensor and a second-line external steam supply controller, and the second-line external steam supply controller can adjust the opening of the second-line external steam supply valve according to second-line external steam supply pressure information detected by the second-line external steam supply pressure sensor;
a reactor tail gas cooler of the PTA first-line production device is communicated to a pipeline of the pipe gallery and is provided with a first-line external steam supply valve, a first-line external steam supply pressure sensor and a first-line external steam supply controller, and the first-line external steam supply controller can adjust the opening of the first-line external steam supply valve according to first-line external steam supply pressure information detected by the first-line external steam supply pressure sensor;
when the PTA first-line production device, the PTA second-line production device and the PTA third-line production device work normally, the first-line external steam supply valve and the second-line external steam supply valve are kept at fixed opening degrees, and the three-line external steam supply controller adjusts the opening degree of the three-line external steam supply valve according to the three-line external steam supply pressure information to ensure that the steam pressure conveyed to the PTA device without self-produced steam is stable;
when the PTA three-line production device stops, the three-line external steam supply valve is manually closed, and the opening of the two-line external steam supply valve is adjusted by the two-line external steam supply controller according to the two-line external steam supply pressure information, so that the steam pressure conveyed to the PTA device without self-produced steam is ensured to be stable; or the one-line external steam supply controller adjusts the opening of the one-line external steam supply valve according to the one-line external steam supply pressure information to ensure that the steam pressure conveyed to the PTA device without self-generated steam is stable.
Further, the users requiring steam use in the self-steam-producing-free PTA apparatus include: the system comprises a catalyst recovery unit, an air compressor unit vacuumizing system, a tail gas drying system and a stripping tower reboiler.
Further, when the PTA three-line production device is stopped and the steam pressure is ensured to be stable by the two-line external steam supply valve, the one-line external steam supply valve is opened to ensure that the steam quantity delivered to the PTA device without self-produced steam is enough;
or when the PTA three-line production device stops and the first-line external steam supply valve ensures that the steam pressure is stable, the second-line external steam supply valve is opened to ensure that the steam quantity delivered to the PTA device without self-produced steam is enough.
Further, the three-wire external steam supply controller, the two-wire external steam supply controller and the one-wire external steam supply controller are pressure controllers.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. A control system for providing steam to a PTA plant without self-produced steam, wherein steam is provided to the PTA plant without self-produced steam by a PTA primary production plant, a PTA secondary production plant, and a PTA tertiary production plant capable of self-producing steam;
the PTA first-line production device, the PTA second-line production device and the PTA third-line production device comprise reactor tail gas coolers for generating steam, the steam generated by the reactor tail gas coolers of the PTA first-line production device, the PTA second-line production device and the PTA third-line production device is collected to a pipe gallery through pipelines respectively, the pipe gallery is communicated to the PTA device without self-generated steam, and the steam is conveyed to the PTA device without self-generated steam through the pipe gallery for use by a user;
a reactor tail gas cooler of the PTA three-way production device is communicated to a pipeline of the pipe gallery and is provided with a three-way external steam supply valve, a three-way external steam supply pressure sensor and a three-way external steam supply controller, and the three-way external steam supply controller can adjust the opening of the three-way external steam supply valve according to three-way external steam supply pressure information detected by the three-way external steam supply pressure sensor;
a reactor tail gas cooler of the PTA second-line production device is communicated to a pipeline of the pipe gallery and is provided with a second-line external steam supply valve, a second-line external steam supply pressure sensor and a second-line external steam supply controller, and the second-line external steam supply controller can adjust the opening of the second-line external steam supply valve according to second-line external steam supply pressure information detected by the second-line external steam supply pressure sensor;
a reactor tail gas cooler of the PTA first-line production device is communicated to a pipeline of the pipe gallery and is provided with a first-line external steam supply valve, a first-line external steam supply pressure sensor and a first-line external steam supply controller, and the first-line external steam supply controller can adjust the opening of the first-line external steam supply valve according to first-line external steam supply pressure information detected by the first-line external steam supply pressure sensor;
when the PTA first-line production device, the PTA second-line production device and the PTA third-line production device work normally, the first-line external steam supply valve and the second-line external steam supply valve are kept at fixed opening degrees, and the three-line external steam supply controller adjusts the opening degree of the three-line external steam supply valve according to the three-line external steam supply pressure information to ensure that the steam pressure conveyed to the PTA device without self-produced steam is stable;
when the PTA three-line production device stops, the three-line external steam supply valve is manually closed, and the opening of the two-line external steam supply valve is adjusted by the two-line external steam supply controller according to the two-line external steam supply pressure information, so that the steam pressure conveyed to the PTA device without self-produced steam is ensured to be stable; or the one-line external steam supply controller adjusts the opening of the one-line external steam supply valve according to the one-line external steam supply pressure information to ensure that the steam pressure conveyed to the PTA device without self-generated steam is stable.
2. The control system of claim 1 for providing steam to a PTA device without self-generated steam, wherein the users within the PTA device without self-generated steam requiring use of steam comprise: the system comprises a catalyst recovery unit, an air compressor unit vacuumizing system, a tail gas drying system and a stripping tower reboiler.
3. The control system of claim 1, wherein when the PTA three-wire production plant is stopped and the steam pressure is stabilized by the two-wire external steam supply valve, the one-wire external steam supply valve is opened to ensure that the amount of steam delivered to the PTA plant is sufficient;
or when the PTA three-line production device stops and the first-line external steam supply valve ensures that the steam pressure is stable, the second-line external steam supply valve is opened to ensure that the steam quantity delivered to the PTA device without self-produced steam is enough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010819785.0A CN111963901B (en) | 2020-08-14 | 2020-08-14 | Control system for providing steam for PTA device without self-produced steam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010819785.0A CN111963901B (en) | 2020-08-14 | 2020-08-14 | Control system for providing steam for PTA device without self-produced steam |
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| CN111963901A CN111963901A (en) | 2020-11-20 |
| CN111963901B true CN111963901B (en) | 2021-11-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014222139A (en) * | 2013-05-14 | 2014-11-27 | 三浦工業株式会社 | Steam supply system and steam supply method |
| CN108644751A (en) * | 2018-04-03 | 2018-10-12 | 青岛金玉大商贸有限公司 | A kind of intelligent control loop circuit heat pipe steam generator |
| CN208634792U (en) * | 2018-08-14 | 2019-03-22 | 常州新日催化剂有限公司 | A kind of steam pipe line stable-pressure device |
| CN110207080A (en) * | 2019-07-12 | 2019-09-06 | 恒力石化（大连）有限公司 | A kind of steam of PTA device is mutually for control system |
| CN209893118U (en) * | 2019-05-06 | 2020-01-03 | 山东一诺生物质材料有限公司 | Self-produced steam full utilization system |
-
2020
- 2020-08-14 CN CN202010819785.0A patent/CN111963901B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014222139A (en) * | 2013-05-14 | 2014-11-27 | 三浦工業株式会社 | Steam supply system and steam supply method |
| CN108644751A (en) * | 2018-04-03 | 2018-10-12 | 青岛金玉大商贸有限公司 | A kind of intelligent control loop circuit heat pipe steam generator |
| CN208634792U (en) * | 2018-08-14 | 2019-03-22 | 常州新日催化剂有限公司 | A kind of steam pipe line stable-pressure device |
| CN209893118U (en) * | 2019-05-06 | 2020-01-03 | 山东一诺生物质材料有限公司 | Self-produced steam full utilization system |
| CN110207080A (en) * | 2019-07-12 | 2019-09-06 | 恒力石化（大连）有限公司 | A kind of steam of PTA device is mutually for control system |
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| CN111963901A (en) | 2020-11-20 |
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