CN106502282A - Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant - Google Patents
Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant Download PDFInfo
- Publication number
- CN106502282A CN106502282A CN201610854375.3A CN201610854375A CN106502282A CN 106502282 A CN106502282 A CN 106502282A CN 201610854375 A CN201610854375 A CN 201610854375A CN 106502282 A CN106502282 A CN 106502282A
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- Prior art keywords
- tower
- tank
- liquid level
- processing capacity
- pump
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/04—Level control, e.g. controlling quantity of material stored in vessel with auxiliary non-electric power
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Pipeline Systems (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The present invention relates to tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant.Mainly solve the problems, such as in existing big processing capacity petrochemical plant that tower tank level fluctuation is quite big and is difficult to reach stable safety in production without regulating measure.It is characterized in that：The tower A（1）, tower B（2）Tower top connects tower reflux pump respectively（3）And return tank（4）, tower A bottom of towe connection column bottoms pump（5）Bottom of towe pipeline connection tower B（2）Feeding line, tower A bottom of towe pipelines are also connected with liquid level surge tank（6）Tank deck feeding line（7）, the tank deck feeding line（7）On be connected to cooler（8）, the liquid level surge tank is tank bottoms to connect tank bottoms pump（9）, the pump intake pipeline of the tank bottoms pump（12）Connect the bottom of the tower top and tower B of tower A respectively.Tower tank liquid level dash adjustment system in the big processing capacity petrochemical plant, can make tower tank level fluctuation in big processing capacity petrochemical plant in controlled range, reach stable safety in production.
Description
Technical field
The present invention relates to a kind of dash adjustment system in technical field of petrochemical industry, particularly a kind of big processing capacity oil
Frock puts middle tower tank liquid level dash adjustment system.
Background technology
As processing capacity is big in big processing capacity petrochemical plant, so conveying material in design and steady production
The flow of pipeline and pump all than larger, due to during design all by considering when steadily producing, the material safety operation of tower tank
Liquid level is not accommodate too many material, and in existing big processing capacity petrochemical plant, the regulation of tank liquid level is mainly by tower
Under bottom pump and tank, pump is controlled to the size of the extracted amount of material, or is utilized in system interior circulation, or is pumped to outside system.Such as
Fruit runs into production operation fluctuation or emergency shutdown accident, it is possible to which moment just exceedes the safety operation liquid level of tower or fills tank
Full, buffering leeway is not adjusted, security incident is caused.And it is all easy foaming material to have a lot of material systems in chemical plant installations,
In operation, it is easy to generating tower Concerning Flooding Phenomenon, the extremely bad control of bottom of towe liquid level, and bottom of towe level fluctuation conference causes to grasp
Make difficulty increasing, it is difficult to reach the purpose of stable safety in production.
Content of the invention
The technical problem to be solved is to overcome existing big processing capacity petrochemical industry dress present in background technology
The problem that middle tower tank level fluctuation is quite big and is difficult to reach stable safety in production without regulating measure is put, and is provided a kind of big
Tower tank liquid level dash adjustment system in processing capacity petrochemical plant, tower tank liquid level buffering in the big processing capacity petrochemical plant
Regulating system, can make tower tank level fluctuation in big processing capacity petrochemical plant in controlled range, reach stable safety raw
Produce.
The present invention solves its problem and can reach by following technical solution：Tower tank in the big processing capacity petrochemical plant
Liquid level dash adjustment system, including tower A, tower B, the tower A, tower B tower tops connect tower reflux pump and return tank, tower A towers respectively
The bottom of towe pipeline connection tower B feeding lines of bottom connection column bottoms pump, tower A bottom of towe pipelines are also connected with liquid level surge tank tank deck feeding line, institute
Stating and cooler is connected on tank deck feeding line, the liquid level surge tank is tank bottoms to connect tank bottoms pump, the pump intake pipeline of the tank bottoms pump
Connect the bottom of the tower top and tower B of tower A respectively.
Of the invention can have the advantages that compared with above-mentioned background technology：Apply the big processing capacity petrochemical industry dress
Middle tower tank liquid level dash adjustment system is put, when material liquid level is high in tower A, tower B, with column bottoms pump or the thing of tank bottoms pump conveying cooling
Material is further separated into vapor tight tank liquid level surge tank, when in tower A, tower B, material liquid level is low, then by newly-increased vapor tight tank bottom pump by thing in tank
Material be transmitted back to tower can system, typically in refinery device the safety operation balance liquid level of tower tank be have liquid level show value 30 ~
80%, if be less than 30%, the material in tower tank is evacuated by pump soon, and after evacuation, pump will generate heat, occur blast or
Person's fire incident, if tower tank liquid level is more than 85%, as the material in tower tank is excessive, can occur over-temp and over-pressure phenomenon, Qing Zheta
Top product is unqualified, and severe one also can occur explosive fire accident accident, cause stop work and production, personnel casualty accidentses to give refinery device band
Carry out huge economic loss, the dynamic equilibrium for therefore making refinery device tower tank liquid level be maintained in safety line is extremely important, this
Bright application so that tower tank level fluctuation reaches stable safety in production in controlled range in big processing capacity petrochemical plant
Purpose.
Description of the drawings
Accompanying drawing 1 is the system structure diagram of the present invention.
In figure：1：Tower A, 2：Tower B, 3：Reflux pump, 4：Return tank, 5：Column bottoms pump, 6：Liquid level surge tank, 7：Tank deck enters
Stockline, 8：Cooler, 9：Tank bottoms pump, 10：Return tank feed-stock pipeline, 11：The outer line sending of product, 12：Pump intake pipeline.
Specific embodiment：
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1, tower tank liquid level dash adjustment system in the big processing capacity petrochemical plant, including tower A1, tower B2,
The tower A1, tower B2 tower tops connect tower reflux pump 3 and return tank 4 respectively, and the bottom of towe pipeline of tower A1 bottom of towe connection column bottoms pump 5 connects
Tower B2 feeding lines are connect, tower A1 bottom of towe pipelines are also connected with 6 tank deck feeding line 7 of liquid level surge tank, are connected to cold on the tank deck feeding line 7
But device 8,6 tank deck of liquid level surge tank are also associated with return tank feed-stock pipeline 10, and the tank bottoms connection of the liquid level surge tank 6 is tank bottoms
Pump 9, the pump intake pipeline 12 of the tank bottoms pump 9 connect the tower top of tower A1 respectively, are placed in below overhead reflux line) and tower B2 under
Portion (i.e. basecoat and most descend between second layer tower tray)；The outer line sending 11 of connection product on the tower A1 overhead reflux pipelines.
Tower tank liquid level dash adjustment system in the big processing capacity petrochemical plant, increases sealed horizontal tank liquid level buffering newly
Tank 6, tank volume are calculated as the 1/2 of instantaneous treating capacity, and material will be lowered the temperature through subcooler water cooler before entering tank, be entered safely
Tank, when material liquid level is high in tower A1, tower B2, is cooled to 40 DEG C of material diversions entrance with column bottoms pump 5 or the conveying of tank bottoms pump 9 closed
Material in tank when material liquid level is low in tower A1, tower B2, then is transmitted back to tower by newly-increased vapor tight tank bottom pump 9 by tank liquid level surge tank
Can system.
Extractant in grand celebration used by blue stone company limited butanone process units butylene concentration unit is easy foamed
System, in operation, very frequent generating tower Concerning Flooding Phenomenon, the very bad control of bottom of towe liquid level, due to bottom of towe level fluctuation big
Operation difficulty is caused to increase, acutely, cell processing material quantity is designed as 20 ton hours, real for tower pressure and bottom of towe, tower top temperature fluctuation
Border operational capacity is reduced to 15 ton hours, and it is 96% that product butylene purity is qualified, and actual butylene purity can only reach 91%, it is difficult to
Reach the purpose of stable safety in production.After application the system, it is achieved that safety and steady is produced, cell processing material quantity brings up to 25
Ton hour, product butylene purity have reached 97%.
Claims (3)
1. tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant, including tower A（1）, tower B（2）, which is special
Levy and be：The tower A（1）, tower B（2）Tower top connects tower reflux pump respectively（3）And return tank（4）, tower A（1）Bottom of towe connects tower
Bottom pump（5）Bottom of towe pipeline connection tower B（2）Feeding line, tower A（1）Bottom of towe pipeline is also connected with liquid level surge tank（6）Tank deck feeding line
（7）, the tank deck feeding line（7）On be connected to cooler（8）, the liquid level surge tank（6）The tank bottoms pump of tank bottoms connection（9）, described
Tank bottoms pump（9）Pump intake pipeline（12）Connect tower A respectively（1）Tower top and tower B（2）Bottom.
2. tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant according to claim 1, its are special
Levy and be：The liquid level surge tank（6）Tank deck is also associated with return tank feed-stock pipeline（10）.
3. tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant according to claim 1, its are special
Levy and be：The tower A（1）The outer line sending of overhead reflux pipeline connection product（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854375.3A CN106502282A (en) | 2016-09-27 | 2016-09-27 | Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854375.3A CN106502282A (en) | 2016-09-27 | 2016-09-27 | Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106502282A true CN106502282A (en) | 2017-03-15 |
Family
ID=58290821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610854375.3A Pending CN106502282A (en) | 2016-09-27 | 2016-09-27 | Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106502282A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612973Y (en) * | 2003-04-23 | 2004-04-21 | 黄建文 | Dynamic interactively running liquid level controller |
| CN101440291A (en) * | 2008-12-24 | 2009-05-27 | 张建超 | Biomass gasification equipment and process |
| WO2011030728A1 (en) * | 2009-09-14 | 2011-03-17 | 三菱化学エンジニアリング株式会社 | Nmp distilling apparatus |
| CN202166899U (en) * | 2011-07-14 | 2012-03-14 | 南京乌江化工有限公司 | Tower kettle liquid level control device |
| CN102580338A (en) * | 2012-02-23 | 2012-07-18 | 淄博市临淄齐泉工贸有限公司 | Device and method for continuously rectifying 3-chloropropyl triethoxysilane |
| CN203816272U (en) * | 2014-04-28 | 2014-09-10 | 大庆中蓝石化有限公司 | Liquid level regulating system of liquid-liquid extracting tower |
| CN104632784A (en) * | 2013-11-14 | 2015-05-20 | 阜新伟光液压气动有限公司 | Test equipment proportional loading system |
| CN204979859U (en) * | 2015-06-08 | 2016-01-20 | 西安长庆科技工程有限责任公司 | Methyl alcohol is received and is stored skid -mounted device |
| CN205505779U (en) * | 2016-02-25 | 2016-08-24 | 山东京博众诚清洁能源有限公司 | Liquid level holdout device at bottom of tower |
-
2016
- 2016-09-27 CN CN201610854375.3A patent/CN106502282A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612973Y (en) * | 2003-04-23 | 2004-04-21 | 黄建文 | Dynamic interactively running liquid level controller |
| CN101440291A (en) * | 2008-12-24 | 2009-05-27 | 张建超 | Biomass gasification equipment and process |
| WO2011030728A1 (en) * | 2009-09-14 | 2011-03-17 | 三菱化学エンジニアリング株式会社 | Nmp distilling apparatus |
| CN202166899U (en) * | 2011-07-14 | 2012-03-14 | 南京乌江化工有限公司 | Tower kettle liquid level control device |
| CN102580338A (en) * | 2012-02-23 | 2012-07-18 | 淄博市临淄齐泉工贸有限公司 | Device and method for continuously rectifying 3-chloropropyl triethoxysilane |
| CN104632784A (en) * | 2013-11-14 | 2015-05-20 | 阜新伟光液压气动有限公司 | Test equipment proportional loading system |
| CN203816272U (en) * | 2014-04-28 | 2014-09-10 | 大庆中蓝石化有限公司 | Liquid level regulating system of liquid-liquid extracting tower |
| CN204979859U (en) * | 2015-06-08 | 2016-01-20 | 西安长庆科技工程有限责任公司 | Methyl alcohol is received and is stored skid -mounted device |
| CN205505779U (en) * | 2016-02-25 | 2016-08-24 | 山东京博众诚清洁能源有限公司 | Liquid level holdout device at bottom of tower |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |
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| RJ01 | Rejection of invention patent application after publication |