CN204939404U - A kind of fractionation tower top follows the anti-salt crust of system and to open a way online water washing device - Google Patents
A kind of fractionation tower top follows the anti-salt crust of system and to open a way online water washing device Download PDFInfo
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- CN204939404U CN204939404U CN201520548920.7U CN201520548920U CN204939404U CN 204939404 U CN204939404 U CN 204939404U CN 201520548920 U CN201520548920 U CN 201520548920U CN 204939404 U CN204939404 U CN 204939404U
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- circulating line
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Abstract
The utility model provides a kind of fractionation tower top to follow the anti-salt crust of system and to open a way online water washing device, comprise a recycle pump, interchanger, and the top circulating line that is arranged at separation column outside, the top circulation return port of top circulating line is connected with separation column top, the bottom loop exit of top circulating line is communicated with separation column bottom, it is characterized in that, described top circulating line is provided with the first de-mineralized water inlet, second de-mineralized water inlet and a gun barrel, described first de-mineralized water inlet is arranged on the pipeline of described top circulation return port, described second salt solution inlet is arranged on the pipeline of described bottom loop exit, after described gun barrel is arranged at described interchanger and near described top circulation return port, described gun barrel bottom connects a deacidification system.
Description
Technical field
The utility model relates to fractionation tower top and follows system, particularly relates to a kind of fractionation tower top and follows the anti-salt crust of system and to open a way online water washing device.
Background technology
At present along with feedstock property worsens increasingly, residue is than more and more higher, and in raw material, nitride and muriate constantly increase, and through series reaction, can generate NH
4cI, (NH
4) SO
4be dissolved in Deng salt in the liquid water at separation column top and form salts solution, condensation between the tower tray of separation column top, vaporization, salt in solution is separated out, blocking float valve, makes tower internal drop increase, liquid phase skewness on each layer tower tray, in tower, speed limit is excessive, rush tower phenomenon frequently to occur, top follows that pumping frequency is numerous finds time, and light diesel oil flash point and gasoline endpoint are difficult to control.Have a strong impact on device smooth running.Salt coagulation of fractionating tower has become the bottleneck factor of present stage restriction heavy oil catalytically cracking equipment long-term operation.
There is following defect in conventional fractionation tower method for washing.
1, before water washing process, need to reduce unit capacity, a some temperature in adjustment fractionating system;
2, in water washing process, quality product is affected all in various degree;
3, be only suitable for short period of time washing, long-time online washing cannot be accomplished;
Therefore, find the more effective online method for washing of one and become current problem demanding prompt solution.
Utility model content
Technical problem to be solved in the utility model is the above-mentioned defect for prior art, there is provided a kind of fractionation tower top to follow the anti-salt crust of system to open a way online water washing device, the utility model object is the online method for washing that can provide a kind of simple possible, utilize minimum investment, adopt most simple operation method fundamentally to solve salt coagulation of fractionating tower problem.
To achieve these goals, the utility model provides a kind of fractionation tower top to follow the anti-salt crust of system and to open a way online water washing device, comprise a recycle pump, interchanger, and the top circulating line that is arranged at separation column outside, the top circulation return port of top circulating line is connected with separation column top, the bottom loop exit of top circulating line is communicated with separation column bottom, it is characterized in that, described top circulating line is provided with the first de-mineralized water inlet, second de-mineralized water inlet and a gun barrel, described first de-mineralized water inlet is arranged on the pipeline of described top circulation return port, described second salt solution inlet is arranged on the pipeline of described bottom loop exit, after described gun barrel is arranged at described interchanger and near described top circulation return port, described gun barrel bottom connects a deacidification system.
Described a kind of fractionation tower top follows the anti-salt crust of system and to open a way online water washing device, and the oil after the upper storage of described gun barrel is separated, bottom is the salt solution after being separated.
Described fractionation tower top follows the anti-salt crust of system and to open a way online water washing device, and described gun barrel top is provided with an oil circuit outlet pipe, and described oil circuit outlet pipe is connected with described top circulating line by a valve.
Described fractionation tower top follows the anti-salt crust of system and to open a way online water washing device, described gun barrel bottom is provided with a water route outlet pipe, described water route outlet pipe is provided with a level control valve, described water route outlet pipe is connected with described deacidification system by described level control valve, and the middle part of described gun barrel establishes valvular conduit to be connected with described top circulating line by one.
Described a kind of fractionation tower top follows the anti-salt crust of system and to open a way online water washing device, and described first de-mineralized water inlet is arranged between described top recycle pump and described interchanger.
Described a kind of fractionation tower top follows the anti-salt crust of system and to open a way online water washing device, and described second de-mineralized water inlet is arranged at the exit end place of described oil circuit outlet pipe.
The beneficial effects of the utility model:
After applying this device, uniformity of temperature profile in whole separation column, and fluctuation is little, plant running is stablized, and top internal circulating load is stabilized in 280t/h, and reflux temperature controls at about 85 DEG C, and top recycle pump is without vaccuum phenomenon.Oil product extracts temperature out between 180 ~ 190 DEG C, and oil product extracted amount is stablized, and has no adverse effects, only have slight salt crust phenomenon to occur in plant running process to product yield and main products quality.After washing process online, all can run well, rushing the phenomenons such as tower does not have generation, after to separation column inspection, find that system tower tray is followed without salt crust phenomenon in top.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is that fractionation tower top follows the anti-salt crust of system and to open a way online water washing device schematic diagram
Wherein Reference numeral is:
1 separation column
2 top circulating lines
21 top circulation return ports
22 bottom loop exits
3 recycle pumps
4 interchanger
5 level control valves
6 first de-mineralized water inlets
7 second de-mineralized water inlets
8 first sour water tank
9 second sour water tank
10 oil circuit outlet pipes
11 water route outlet pipes
111 first-hand valves
112 second-hand's valves
12 gun barrels
121 remote holder valves
122 defensive position valves
123 secondary receipts valves
Embodiment
Below implement for illustration of the utility model, but be not used for limiting scope of the present utility model.
A kind of fractionation tower top that the utility model provides follows the anti-salt crust of system and to open a way online water washing device, as shown in Figure 1, comprise a recycle pump 3, two interchanger 4, and the top circulating line 2 that is arranged at separation column outside, the top circulation return port 21 of top circulating line 2 is connected with separation column 1 top, the bottom loop exit 22 of top circulating line 2 is communicated with separation column 1 bottom, top circulating line 2 is provided with the first de-mineralized water inlet 6, second de-mineralized water inlet 7 and a gun barrel 12, first de-mineralized water inlet 6 is arranged on the pipeline of top circulation return port 21, second salt solution inlet 7 is arranged on the pipeline of described bottom loop exit 22, gun barrel 12 to be arranged at after interchanger 4 and near top circulation return port 21, gun barrel 12 bottom is provided with a water route outlet pipe 11, water route outlet pipe 11 is provided with a level control valve 5, water route outlet pipe 11 is connected with described deacidification system by level control valve 5, this deacidification system is connected in parallel in water route outlet pipe 11 by the first deacidification tank 8 and the second deacidification tank 9, the middle part of gun barrel 12 establishes valvular conduit to be connected with top circulating line by one.Oil after the upper storage separation of gun barrel 12, bottom is the salt solution after being separated, and gun barrel 12 top is provided with an oil circuit outlet pipe 10, and above-mentioned oil circuit outlet pipe 10 is connected with top circulating line 2 by a valve.First de-mineralized water inlet 6 is arranged between described recycle pump 3 and interchanger 4.Second de-mineralized water inlet 7 is arranged at the exit end place of oil circuit outlet pipe 10.
Below further describe and how to utilize this device to carry out the working method of the desalinization of soil by flooding or leaching to the fractionation tower top recycle system:
The initial stage that goes into operation is when normally producing, salt crust phenomenon is there is not in fractionation tower top circulating line and in knockout tower, it is lower that saltiness in oil is followed on top in the circulating line of top, employing initial stage desalinization of soil by flooding or leaching step, in the circulating line 2 of top, de-mineralized water is injected by described first de-mineralized water inlet 6, de-mineralized water in the circulating line of top 2 with push up after turning oil mixes, after two interchanger 4, enter gun barrel 12 again carry out oily water separation, by water route outlet pipe, the saline sewage dissolved in the turning oil of top is expelled to the first deacidification tank 8 and the second deacidification tank 9, take above step, make top follow the content of salt in oil and keep a lower amount, thus reduce the possibility that fractionation tower top follows system salt crust, also extend device from the initial stage of going into operation to the cycle of operation occurring salt crust phenomenon simultaneously.The more than not free restriction of operation, can not produce any detrimentally affect to the normal running of fractionating system.
When the tower tray in separation column there being a large amount of salt crust, because top turning oil to the 29 layer tower tray in separation column still has the generation of a small amount of liquid water in the dirty process of 26 layers of tower tray, after device long-play, the 4 layers of tower tray pushing up system of following in tower still have the possibility of salt crust, for the salt crust on removing tower tray can be taked, later stage desalinization of soil by flooding or leaching step can be adopted, open the second de-mineralized water water filling port 7, water filling in separation column, top in separation column is followed in oil containing a large amount of de-mineralized water, account for top and follow about 50% of each medium summation in system, tower tray is soaked, rinse, the salt be attached to like this on tower tray slowly will to be dissolved in de-mineralized water and to flow out from bottom loop exit 22, dissolve the de-mineralized water of salt through recycle pump 3, gun barrel 12 is entered after two cold parallel operations 4, saline sewage is got rid of, an open circuit washing process can be formed like this, high flux flushing is repeatedly carried out to these four layers of tower trays of 29 layers of tower tray to 26 layer of separation column, fresh de-mineralized water constantly enters fractionating system from the second de-mineralized water water filling port 7, the saline sewage of high density drains into deacidification system from the water route outlet pipe 11 of gun barrel 12, deacidification system of the present utility model is two the first deacidification tank 8 and the second deacidification tanks 9 be connected in parallel, arrange deacidification system to keep keeping lower salt concentration in the liquid water in separation column 1 tower in order to the moment, the salt on tower tray is made fully to be dissolved in liquid water, get rid of through deacidification system after the sewage of dissolved salts flows out in separation column 1, can not enter in tower again, salt adhesion amount on the tower tray that progressively can reduce separation column 1 is like this until eliminate salt crust phenomenon.
In a word, the restriction of this device washing time is loose, only need according to the method for washing selected, open remote holder valve 121 or open defensive position valve 121, in water washing process, remote holder valve 121 or open defensive position valve 121 opened condition, the valve of assistant's valve 123 is closing condition, Liquid level valve 5 comes into operation, and opens as required outside the first valve 111 or the second valve 112 and drains into deacidification system.
The utility model overcomes the defect of conventional fractionation tower method for washing.In water washing process, without the need to the amount of falling, have no adverse effects to quality product, no time limit, whenever and wherever possible according to need of production, can wash according to separation column running condition online.In the fractionation tower top recycle system, adding gun barrel, in water washing process, do not affect the normal running of separation column, quality product is not impacted, follow-up rich gas compression and absorbing-stabilizing system not being impacted, not by time limitation, without the need to reducing treatment capacity.Simple to operate, reliable and stable.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (6)
1. a fractionation tower top follows the anti-salt crust of system and to open a way online water washing device, comprise a recycle pump, interchanger, and the top circulating line that is arranged at separation column outside, the top circulation return port of top circulating line is connected with separation column top, the bottom loop exit of top circulating line is communicated with separation column bottom, it is characterized in that, described top circulating line is provided with the first de-mineralized water inlet, second de-mineralized water inlet and a gun barrel, described first de-mineralized water inlet is arranged on the pipeline of described top circulation return port, described second salt solution inlet is arranged on the pipeline of described bottom loop exit, after described gun barrel is arranged at described interchanger and near described top circulation return port, described gun barrel bottom connects a deacidification system.
2. a kind of fractionation tower top as claimed in claim 1 follows the anti-salt crust of system and to open a way online water washing device, it is characterized in that, the oil after the upper storage of described gun barrel is separated, bottom is the salt solution after being separated.
3. fractionation tower top as claimed in claim 1 follows the anti-salt crust of system and to open a way online water washing device, and it is characterized in that, described gun barrel top is provided with an oil circuit outlet pipe, and described oil circuit outlet pipe is connected with described top circulating line by a valve.
4. a kind of fractionation tower top as claimed in claim 1 follows the anti-salt crust of system and to open a way online water washing device, it is characterized in that, described gun barrel bottom is provided with a water route outlet pipe, described water route outlet pipe is provided with a level control valve, described water route outlet pipe is connected with described deacidification system by described level control valve, and the middle part of described gun barrel establishes valvular conduit to be connected with described top circulating line by one.
5. a kind of fractionation tower top as claimed in claim 1 follows the anti-salt crust of system and to open a way online water washing device, and it is characterized in that, described first de-mineralized water inlet is arranged between described top recycle pump and described interchanger.
6. a kind of fractionation tower top as claimed in claim 3 follows the anti-salt crust of system and to open a way online water washing device, and it is characterized in that, described second de-mineralized water inlet is arranged at the exit end place of described oil circuit outlet pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520548920.7U CN204939404U (en) | 2015-07-27 | 2015-07-27 | A kind of fractionation tower top follows the anti-salt crust of system and to open a way online water washing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520548920.7U CN204939404U (en) | 2015-07-27 | 2015-07-27 | A kind of fractionation tower top follows the anti-salt crust of system and to open a way online water washing device |
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| CN204939404U true CN204939404U (en) | 2016-01-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647566A (en) * | 2016-04-06 | 2016-06-08 | 中石化炼化工程（集团）股份有限公司 | Fractionating system and method for reducing scaling and corrosion of fractionating system |
| CN106563285A (en) * | 2016-10-10 | 2017-04-19 | 天津科技大学 | Rectification apparatus for high-salinity material |
| CN106693430A (en) * | 2016-12-30 | 2017-05-24 | 山东胜星化工有限公司 | Online water washing fractioning tower top cycle system |
| CN108329942A (en) * | 2018-03-09 | 2018-07-27 | 山东京博石油化工有限公司 | A kind of device and technique of online processing salt crust |
-
2015
- 2015-07-27 CN CN201520548920.7U patent/CN204939404U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647566A (en) * | 2016-04-06 | 2016-06-08 | 中石化炼化工程（集团）股份有限公司 | Fractionating system and method for reducing scaling and corrosion of fractionating system |
| CN106563285A (en) * | 2016-10-10 | 2017-04-19 | 天津科技大学 | Rectification apparatus for high-salinity material |
| CN106693430A (en) * | 2016-12-30 | 2017-05-24 | 山东胜星化工有限公司 | Online water washing fractioning tower top cycle system |
| CN108329942A (en) * | 2018-03-09 | 2018-07-27 | 山东京博石油化工有限公司 | A kind of device and technique of online processing salt crust |
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