CN107892942A - A kind of stabilizer backflow control system - Google Patents
A kind of stabilizer backflow control system Download PDFInfo
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- CN107892942A CN107892942A CN201711162524.0A CN201711162524A CN107892942A CN 107892942 A CN107892942 A CN 107892942A CN 201711162524 A CN201711162524 A CN 201711162524A CN 107892942 A CN107892942 A CN 107892942A
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- China
- Prior art keywords
- stabilizer
- outside
- normally opened
- pipeline
- opened contact
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
- C10G47/36—Controlling or regulating
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses sending end outside a kind of stabilizer backflow control system, including stabilizer backflow end, stabilizer reflux pump, stabilizer and naphtha；Sending end outside pipeline to naphtha is sent outside by adding a new pipeline before the return valve for the stabilizer reflux pump pump discharge that column overhead connects is stablized, among on pipeline is sent outside regulating valve is sent outside with one group, send regulating valve outside and be built-in with magnetic starter, as the liquid level and the regulating measure of tower top temperature in control stabilizer, so as to strengthen stabilizer desulfurization removing nitric effect, confirmed by practice, after increasing new pipeline, reach control to stabilizer temperature by adjusting stabilizer liquid level can, add naphtha and send produced quantity outside, simultaneously, the effect of initial gross separation is served to downstream unit fractionating column, fractionating column operation becomes more steady, it ensure that the product quality of diesel oil.
Description
Technical field
The present invention relates to stabilizer production technical field, more particularly to a kind of stabilizer backflow control system.
Background technology
In production, as the change D501 stabilizer return tanks liquid level for being hydrocracked effect also changes therewith, if split
Change effect is excessively good, then light oil is excessive in stabilizer, causes D501 liquid levels substantially to go up, in order to maintain return tank liquid level, Zhi Nengjia
Big capacity of returns, so, then cause to stablize that tower top temperature is too low, and influenceing desulfurizing oil and denitrification effect is influenceing stabilizer just
Normal separating effect, heavy constituent are not kept completely separate, can be brought into fractionating column, are caused fractionating column load to increase, are influenceed normal operating.
The content of the invention
It is an object of the invention to provide a kind of stabilizer backflow control system, after increasing new pipeline, regulation is stable
Tower liquid level can reaches the control to stabilizer temperature, adds naphtha and sends produced quantity outside, meanwhile, downstream unit is fractionated
Tower serves the effect of initial gross separation, and fractionating column operation becomes more steady, the product quality of diesel oil ensure that, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：A kind of stabilizer backflow control system, including it is stable
Tower backflow end, stabilizer reflux pump, stabilizer and the outer sending end of naphtha；The exit at the stabilizer backflow end is connected by pipeline
The entrance point of stabilizer reflux pump is connected on, the port of export of stabilizer reflux pump is connected on stabilizer by pipeline, and stabilizer
Return valve is installed on the connecting pipe of reflux pump and stabilizer；It is circumscribed with the pipeline of the return valve front end outer
Pipeline is sent, sends outside to be provided with pipeline and sends regulating valve outside；The pipeline of sending outside is by sending regulating valve and sending end company outside naphtha outside
It is logical.
Preferably, the regulating valve of sending outside is built-in with magnetic starter, and the electric control element of magnetic starter includes keeping apart
It is normally opened to close QS, comprehensive protection device JDB, start button SB1, intermediate relay ZJ, normally opened contact ZJ1, vacuum contactor KM, auxiliary
Contact KM2 and stop button SB2；The disconnecting switch QS is connected with vacuum contactor KM by wire, on vacuum contactor KM
It is connected with 9# circuits；Transformer T is also associated with the disconnecting switch QS, and is provided with the circuit being connected with transformer T
Fuse FU；4# circuits and 9# circuits are connected with the output winding of the transformer T, comprehensive protection device is installed on 4# circuits
JDB and intermediate relay ZJ, are provided with stop button SB2 on the outlet line of intermediate relay ZJ, in parallel on stop button SB2
There are 1# circuits and 2# circuits, auxiliary normally opened contact KM2 and start button SB1 is provided with 2# circuits；The 2# circuits and 9# lines
It is provided between road between low liquid level normally opened contact S1,9# circuit and 1# circuits and is provided with high level normally opened contact S2.
Preferably, low liquid level normally opened contact S1 and high level the normally opened contact S2 is made up of tongue tube and magnetic switch.
Preferably, the low liquid level normally opened contact S1 on the magnetic starter and high level normally opened contact S2 is arranged at outer
Sending outside in pipeline for regulating valve connection is sent, sends outside and floating body and magnet is provided with the hydrops face in pipeline, floating body and magnet are set
Have two groups it is corresponding with low liquid level normally opened contact S1 and high level normally opened contact S2 respectively.
Preferably, the floating body sent outside in pipeline and magnet with liquid level rising with low liquid level normally opened contact S1 and
Tongue tube contact on high level normally opened contact S2, sends regulating valve outside and is in opening state, floating body and magnetic in pipeline to be sent outside
Iron declines with liquid level, and the tongue tube on high level normally opened contact S2 separates with floating body and magnet, sends regulating valve outside and is in closing
State.
Compared with prior art, the beneficial effects of the invention are as follows：
This stabilizer backflow control system, in the return valve for the stabilizer reflux pump pump discharge for stablizing column overhead connection
Before add a new pipeline and send sending end outside pipeline to naphtha outside, on pipeline is sent outside among with one group send regulating valve outside, work
To control the regulating measure of liquid level and tower top temperature in stabilizer, so as to strengthen stabilizer desulfurization removing nitric effect, by practice
Confirm, after increasing new pipeline, reach control to stabilizer temperature by adjusting stabilizer liquid level can, add naphtha
Send produced quantity outside, meanwhile, the effect of initial gross separation is served to downstream unit fractionating column, fractionating column, which operates, becomes more steady, protects
The product quality of diesel oil is demonstrate,proved.
Brief description of the drawings
Fig. 1 is the overall structure block diagram of the present invention；
Fig. 2 is the magnetic starter electric control schematic diagram of the present invention；
Fig. 3 is Fig. 2 of the present invention locally schematic diagrames in kind.
In figure：1 stabilizer backflow end, 2 stabilizer reflux pumps, 3 stabilizers, 4 naphthas outer sending end, 5 return valves, 6
Send pipeline outside, 7 send regulating valve, 8 magnetic starters outside.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1-3, the embodiment of the present invention：A kind of stabilizer flows back control system, including stabilizer backflow end 1, steady
Determine the outer sending end 4 of tower reflux pump 2, stabilizer 3 and naphtha；The exit at stabilizer backflow end 1 is connected to stabilizer by pipeline
The entrance point of reflux pump 2, the port of export of stabilizer reflux pump 2 is connected on stabilizer 3 by pipeline, and stabilizer reflux pump 2
With being provided with return valve 5 on the connecting pipe of stabilizer 3；It is circumscribed with the pipeline of the front end of return valve 5 and sends pipeline outside
6, send outside to be provided with pipeline 6 and send regulating valve 7 outside；Send pipeline 6 outside and connected by sending regulating valve 7 outside with sending end outside naphtha 4.
Wherein, send regulating valve 7 outside and be built-in with magnetic starter 8, the electric control element of magnetic starter 8 includes disconnecting switch
QS, comprehensive protection device JDB, start button SB1, intermediate relay ZJ, normally opened contact ZJ1, vacuum contactor KM, auxiliary are normally opened to be touched
Point KM2 and stop button SB2；Disconnecting switch QS is connected with vacuum contactor KM by wire, is connected with vacuum contactor KM
9# circuits；Transformer T is also associated with disconnecting switch QS, and fuse FU is installed on the circuit being connected with transformer T；Become
4# circuits and 9# circuits are connected with depressor T output winding, comprehensive protection device JDB and auxiliary reclay are installed on 4# circuits
ZJ, stop button SB2 is installed on the outlet line of intermediate relay ZJ, 1# circuits and 2# lines are parallel with stop button SB2
Road, auxiliary normally opened contact KM2 and start button SB1 is provided with 2# circuits；Low liquid level is provided between 2# circuits and 9# circuits
High level normally opened contact S2 is provided between normally opened contact S1,9# circuit and 1# circuits；Low liquid level normally opened contact S1 and high level
Normally opened contact S2 is made up of tongue tube and magnetic switch.
Wherein, the low liquid level normally opened contact S1 on magnetic starter 8 and high level normally opened contact S2 are arranged at and send tune outside
What section valve 7 connected sends outside in pipeline 6, sends outside and floating body and magnet are provided with the hydrops face in pipeline 6, floating body and magnet are provided with
Two groups are corresponding with low liquid level normally opened contact S1 and high level normally opened contact S2 respectively, send outside floating body in pipeline 6 and magnet with
The rising for liquid level contacts with the tongue tube on low liquid level normally opened contact S1 and high level normally opened contact S2, sends regulating valve 7 outside
In opening state, floating body and magnet in pipeline 6 to be sent outside decline with liquid level, the tongue tube on high level normally opened contact S2
Separated with floating body and magnet, send regulating valve 7 outside and be closed.
Operation principle：This stabilizer flows back control system, sets between the 2# circuits and 9# circuits on magnetic starter 8
There is low liquid level normally opened contact S1, while high level normally opened contact S2 is provided between 9# circuits and 1# circuits, when sending pipeline 6 outside
When interior liquid level is in low water level, the magnet on floating body touches the tongue tube on low liquid level normally opened contact S1,2# circuits and 9#
Circuit close, closed-loop path now has not yet been formed in magnetic starter 8, thus send outside regulating valve 7 be failure to actuate, stabilizer reflux pump 2
Do not start, when sending the liquid level in pipeline 6 outside and continuing to rise to high level, the magnet on floating body touches high level normally opened contact
S2 tongue tube, 9# circuits close with 1# circuits, and magnetic starter 8 switchs secondary control loop and forms closed-loop path, while certainly
Protect contact KM2 closure, send regulating valve 7 outside and act, stabilizer reflux pump 2 starts and starts drawing liquid body, with liquid level it is continuous under
Dropping, the magnet on floating body departs from high level normally opened contact S2 tongue tube, and 1# circuits and 9# circuits disconnect, but due to self holding contact
KM2 is closed, therefore magnetic starter 8 switchs and now continues drawing liquid, Zhi Daoshui still in power transmission state, stabilizer reflux pump 2
When potential drop is to low liquid level normally opened contact S1, the magnet on floating body departs from low liquid level normally opened contact S1 tongue tube, 2# circuits and 9#
Circuit disconnects, and the secondary control loop of magnetic starter 8 disconnects, and now switch stops power transmission, sends regulating valve 7 outside and closes, stabilizer
Reflux pump 2 stops taking out, it is achieved thereby that changing the purpose of automatic pump drainage according to liquid level, the liquid level in stabilizer 3 is adjusted, from
And to the control of stabilizer temperature.
In summary, stabilizer backflow control system proposed by the present invention, in the stabilizer backflow of the tower top of stabilizer 3 connection
A new pipeline is added before the return valve 5 of the pump discharge of pump 2 and sends sending end 4 outside pipeline 6 to naphtha outside, is sending pipeline 6 outside
Upper centre sends regulating valve 7 outside with one group, as the liquid level and the regulating measure of tower top temperature in control stabilizer 3, so as to strengthen
Stabilizer desulfurization removing nitric effect, confirm by practice, after increasing new pipeline, reached pair by adjusting the liquid level can of stabilizer 3
The control of the temperature of stabilizer 3, add naphtha and send produced quantity outside, meanwhile, initial gross separation is served to downstream unit fractionating column
Effect, fractionating column operation becomes more steady, ensure that the product quality of diesel oil.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (5)
- The control system 1. a kind of stabilizer flows back, it is characterised in that including stabilizer backflow end (1), stabilizer reflux pump (2), Stabilizer (3) and the outer sending end (4) of naphtha；The exit of stabilizer backflow end (1) is connected to stabilizer by pipeline and returned The entrance point of pump (2) is flowed, the port of export of stabilizer reflux pump (2) is connected on stabilizer (3) by pipeline, and stabilizer flows back Pump (2) on the connecting pipe of stabilizer (3) with being provided with return valve (5)；On the pipeline of return valve (5) front end It is circumscribed with and sends pipeline (6) outside, sends outside to be provided with pipeline (6) and send regulating valve (7) outside；The pipeline (6) of sending outside is adjusted by sending outside Section valve (7) connects with the outer sending end (4) of naphtha.
- 2. a kind of stabilizer backflow control system as claimed in claim 1, it is characterised in that described to send outside in regulating valve (7) Magnetic starter (8) is equipped with, the electric control element of magnetic starter (8) includes disconnecting switch QS, comprehensive protection device JDB, starts and press Button SB1, intermediate relay ZJ, normally opened contact ZJ1, vacuum contactor KM, auxiliary normally opened contact KM2 and stop button SB2；It is described Disconnecting switch QS is connected with vacuum contactor KM by wire, and 9# circuits are connected with vacuum contactor KM；The disconnecting switch Transformer T is also associated with QS, and fuse FU is installed on the circuit being connected with transformer T；The output of the transformer T 4# circuits and 9# circuits are connected with coil, comprehensive protection device JDB and intermediate relay ZJ, middle relay are installed on 4# circuits Stop button SB2 is installed on device ZJ outlet line, is parallel with 1# circuits and 2# circuits on stop button SB2, on 2# circuits It is provided with auxiliary normally opened contact KM2 and start button SB1；Low liquid level normally opened contact is provided between the 2# circuits and 9# circuits High level normally opened contact S2 is provided between S1,9# circuit and 1# circuits.
- A kind of 3. stabilizer backflow control system as claimed in claim 2, it is characterised in that the low liquid level normally opened contact S1 It is made up of with high level normally opened contact S2 tongue tube and magnetic switch.
- 4. a kind of stabilizer backflow control system as claimed in claim 2, it is characterised in that on the magnetic starter (8) Low liquid level normally opened contact S1 and high level normally opened contact S2 be arranged at and send the sending outside in pipeline (6) of regulating valve (7) connection outside, Send outside and floating body and magnet be provided with the hydrops face in pipeline (6), floating body and magnet be provided with two groups it is normally opened with low liquid level respectively Contact S1 and high level normally opened contact S2 are corresponding.
- 5. a kind of stabilizer backflow control system as claimed in claim 4, it is characterised in that described to send outside in pipeline (6) Floating body and magnet contact with the rising of liquid level with the tongue tube on low liquid level normally opened contact S1 and high level normally opened contact S2, Send regulating valve (7) outside and be in opening state, the floating body and magnet in pipeline (6) to be sent outside decline with liquid level, and high level is normally opened Tongue tube on the S2 of contact separates with floating body and magnet, sends regulating valve (7) outside and is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162524.0A CN107892942A (en) | 2017-11-21 | 2017-11-21 | A kind of stabilizer backflow control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162524.0A CN107892942A (en) | 2017-11-21 | 2017-11-21 | A kind of stabilizer backflow control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107892942A true CN107892942A (en) | 2018-04-10 |
Family
ID=61805648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711162524.0A Pending CN107892942A (en) | 2017-11-21 | 2017-11-21 | A kind of stabilizer backflow control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107892942A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201910001U (en) * | 2010-12-02 | 2011-07-27 | 郴州浩伦生化助剂有限公司 | Multifunctional automatic liquid level controller |
| CN203625313U (en) * | 2013-10-29 | 2014-06-04 | 中国石油化工股份有限公司 | Pressure compensating device of catalytic cracking stabilization tower |
| CN206204243U (en) * | 2016-11-18 | 2017-05-31 | 濮阳市盛源石油化工有限公司 | Petroleum naphtha hydrogenation refining plant |
-
2017
- 2017-11-21 CN CN201711162524.0A patent/CN107892942A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201910001U (en) * | 2010-12-02 | 2011-07-27 | 郴州浩伦生化助剂有限公司 | Multifunctional automatic liquid level controller |
| CN203625313U (en) * | 2013-10-29 | 2014-06-04 | 中国石油化工股份有限公司 | Pressure compensating device of catalytic cracking stabilization tower |
| CN206204243U (en) * | 2016-11-18 | 2017-05-31 | 濮阳市盛源石油化工有限公司 | Petroleum naphtha hydrogenation refining plant |
Non-Patent Citations (1)
| Title |
|---|
| 卞正岗等: "《系统应用和现场设计》", 31 January 1988, 北京自动化技术研究所，北京市自动化系统成套工程公司 * |
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| PB01 | Publication | ||
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Application publication date: 20180410 |