CN209702620U - Alkylbenzene rectification process device - Google Patents
Alkylbenzene rectification process device Download PDFInfo
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- CN209702620U CN209702620U CN201822265501.9U CN201822265501U CN209702620U CN 209702620 U CN209702620 U CN 209702620U CN 201822265501 U CN201822265501 U CN 201822265501U CN 209702620 U CN209702620 U CN 209702620U
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- tower
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- alkylbenzene
- discharge port
- pipeline
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Abstract
The utility model relates to a kind of alkylbenzene rectification process devices, tower is steamed again including alkylbenzene, alkylbenzene recovery tower, the inner cavity of tower body is equipped with tower top rectifying section from top to bottom, oil trap, enriching section, stripping section, reboiler is equipped in the bottom of stripping section, alkylbenzene recovery tower connects the feed inlet of enriching section by pipeline, first discharge port of oil trap connects the first air cooler entrance with the second discharge port of enriching section, the first feedback outlet and material pot of the outlet connection tower top rectifying section of first air cooler, the third discharge port of tower bottom connects the entrance of the second air cooler, the outlet of second air cooler connects material pot, 4th discharge port of stripping section connects material pot, the discharge port of the second feedback outlet connection column bottoms pump of reservoir, the feed inlet of the discharge port connection rectifying section of column bottoms pump, rejected product freshening is connected in feed inlet Pipeline, all pipelines are equipped with flow control valve.The present apparatus has product diversity, can carry out freshening to rejected product.
Description
Technical field
The utility model relates to alkylated reaction engineering device technique field more particularly to a kind of alkylbenzene rectification process devices.
Background technique
Currently, the alkylated reaction device of domestic production alkylbenzene mainly uses alkylation.Alkylation is anti-
Should be carried out by two sections of mixing, one section of sedimenting system, reaction effluent is by a series of fractionating column to various compounds
It is separated, unreacted feedstock circulation uses, and linear alkylbenzene (LAB) is sent to tank field storage as product, and hydrofluoric acid cyclic regeneration is simultaneously
It is recycled.The product of alkylated reaction device includes linear alkylbenzene (LAB) and weight alkylbenzene etc., and the separation of alkylbenzene is to subtract
Rectification process, existing alkylbenzene rectifying separation equipment byproduct generated are carried out under the conditions of pressure in alkylbenzene rerun tower
Weight alkane benzene viscosity is relatively low, is not able to satisfy market demand index, product is caused largely to overstock, and rejected product caused by equipment
Amount is big and viscosity is higher, can not be recycled by the method for freshening, cause biggish loss to enterprise.Therefore, have
Necessity improves existing alkylbenzene rectifying separation equipment to overcome the technical problem present in it.
Summary of the invention
The purpose of this utility model is to provide a kind of structures simply, volume compact, equipment investment cost is low and can increase
The alkylbenzene rectification process device of product diversity.
To achieve the goals above, the technical solution adopted in the utility model is a kind of alkylbenzene rectification process device, packet
It includes alkylbenzene and steams tower, alkylbenzene recovery tower again, it includes end socket, cylinder tower body, infundibulate tower bottom that alkylbenzene steams tower again, on end socket
Fixed gas outlet is offered, the space between end socket and tower body top is equipped with pumped vacuum systems, and the inner cavity of tower body is set from top to bottom
There are tower top rectifying section, oil trap, enriching section, stripping section, is equipped with U-shaped reboiler slot, reboiler slot in the bottom of stripping section
Reboiler is inside installed, the tube side entrance of reboiler is led to from tower body side wall to be steamed outside tower again, is being located at enriching section
Tower body side wall on offer feed inlet, alkylbenzene recovery tower connects feed inlet by pipeline, in the tower body side of tower top rectifying section
The first feedback outlet is offered on wall, feed pump is equipped on pipeline, is offered first on the tower body side wall for being located at oil trap and is gone out
Material mouth offers the second discharge port on the tower body side wall being located at the top of enriching section, and the first and second discharge ports lead to respectively
Piping connects the first air cooler entrance, is equipped with tower top on the pipeline between the first discharge port and the first air cooler and pumps, and first
The outlet of air cooler connects the first feedback outlet by pipeline respectively and material pot, stripping section are connected with tower bottom, is equipped in tower bottom
Reservoir offers third discharge port in the bottom of reservoir, and third discharge port connects the entrance of the second air cooler by pipeline,
The connecting pipe of third discharge port and the second air cooler is equipped with column bottoms pump, and the outlet of the second air cooler connects material by pipeline
Tank offers the 4th discharge port on the side wall of reservoir, and the 4th discharge port connects material pot by pipeline, in stripping section
Side wall offers the second feedback outlet, and the second feedback outlet is connected the discharge port of column bottoms pump by pipeline, is connected with not in feed inlet
Qualified product freshening pipeline, the discharge port of column bottoms pump are located at the feed inlet of tower top rectifying section, the tube side of reboiler by pipeline connection
Hot oil inlet and outlet piping is connected on entrance, the discharge port of column bottoms pump is entered by the shell side that pipeline connects the first water cooling heat exchanger
Mouthful, the shell-side outlet of the first water cooling heat exchanger connects material pot by pipeline, and the shell-side outlet of the first water cooling heat exchanger passes through pipe
Road connects the second feedback outlet, and all pipelines are equipped with flow control valve.
As a kind of improvement of the utility model, the end socket, tower body and tower bottom are to be welded to connect, then steam the entirety of tower
The diameter ratio of height and tower body is 10-100:1.
As a kind of improvement of the utility model, radioactive isotope liquid level is equipped in the oil trap and reservoir
Indicate controller.
As a kind of improvement of the utility model, the pumped vacuum systems includes condenser, steam jet ejector, intermediate cold
Condenser, post-condenser, the suction chamber of the outlet connection steam jet ejector of condenser, the entrance connection steam injection of interconderser
The outlet of device, the outlet of interconderser and the outlet of post-condenser are all connected with fixed gas outlet.
As a kind of improvement of the utility model, the quantity of the tower top pump and column bottoms pump, which is all provided with, is set to 2 sets, and one for one
With.
As a kind of improvement of the utility model, the fixed gas outlet connects the shell of the second water cooling heat exchanger by pipeline
Journey entrance, the shell-side outlet of the second water cooling heat exchanger connect sour hydrocarbon and are layered tank, in addition, fixed gas outlet also passes through flare piping
Connect torch.
As a kind of improvement of the utility model, the tower top rectifying section, oil trap, enriching section, stripping section are homogeneous
Connection, the height of tower top rectifying section is to steam the 5-10% of tower height degree again, and the height of oil trap is to steam the 3-6% of tower height degree again, in tower
The height of rectifying section is to steam the 50-60% of tower height degree again, and the height of stripping section is to steam the 10-15% of tower height degree again.
Compared with the existing technology, the device overall construction design of the utility model is ingenious, structurally reasonable stabilization, and volume is tight
It gathers, manufacturing cost is low, carries out special structure design by steaming alkylbenzene again in tower and steam tower again with alkylbenzene and match to make
Each road pipeline designs enable a device to realize cutting alkylbenzene and cut the operation of heavy alkyl benzene, increase finished product
Diversity, while can also freshening processing be carried out to rejected product, the quality of product has been effectively ensured；Pass through a preparation and a use simultaneously
2 sets of tower tops pump and column bottoms pump structure design, it can be achieved that entire processing unit without shut-down continuous production, improve yield.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the alkylbenzene rectification process device of the utility model.
In figure: 1- steams tower again, 2- alkylbenzene recovery tower, 3- tower top rectifying section, 4- oil trap, 5- enriching section, and 6- is mentioned
Evaporate section, 7- reboiler, 8- reservoir, 9- feed pump, 10- tower top pump, the first air cooler of 11-, 12- column bottoms pump, 13- second is air-cooled
Device, the first water cooling heat exchanger of 14-, the second water cooling heat exchanger of 15-, 16- acid hydrocarbon are layered tank.
Specific embodiment
In order to deepen to be further described with reference to the accompanying drawing to the utility model to the understanding and cognition of the utility model
And introduction.
As shown in Figure 1, a kind of alkylbenzene rectification process device, including alkylbenzene steam tower 1, alkylbenzene recovery tower 2, alkyl again
Benzene steam again tower 1 include end socket, cylinder tower body, infundibulate tower bottom, the end socket, tower body and tower bottom be welded to connect, weld seam into
Row encapsulation process, offers fixed gas outlet on end socket, and the space between end socket and tower body top is equipped with pumped vacuum systems, uses
Vacuum distillation processing function in realization tower.The inner cavity of tower body is equipped with tower top rectifying section 3, oil trap 4, essence in tower from top to bottom
Section 5, stripping section 6 are evaporated, also, the tower top rectifying section 3, oil trap 4, enriching section 5, stripping section 6 are connected.In stripping
The bottom of section 6 is equipped with 7 slot of U-shaped reboiler, is equipped with reboiler 7 in 7 slot of reboiler, and the tube side entrance of reboiler 7 is from tower body
Side wall, which is led to, to be steamed again outside tower 1, is connected with hot oil inlet and outlet piping on the tube side entrance of reboiler 7, by reboiler 7
Tube side conveys hot oil to realize the material heating function steamed in tower 1 again, and temperature thermocouples are arranged to supervise in multiple positions in tower
The temperature steamed in tower 1 again is surveyed, and the feed flow of hot oil is controlled to realize the temperature in tower according to real-time temperature feedback numerical value
Degree control.Offer feed inlet on the tower body side wall for being located at enriching section 5, alkylbenzene recovery tower 2 by pipeline connect into
Material mouth conveys alkyl benzene material to feed inlet by alkylbenzene recovery tower 2, feed pump 9 is equipped on pipeline, and feed pump 9 controls
The feed flow and flow velocity of alkyl benzene material.The first feedback outlet is offered on the tower body side wall of tower top rectifying section 3, is being located at collection
The first discharge port is offered on the tower body side wall of oil groove 4, offers second on the tower body side wall for being located at 5 top of enriching section
Discharge port, the first and second discharge ports connect 11 entrance of the first air cooler by pipeline respectively, empty in the first discharge port and first
Pipeline between cooler 11 is equipped with tower top pump 10, the outlet of the first air cooler 11 respectively by pipeline connect the first feedback outlet and
Material pot, stripping section 6 are connected with tower bottom, and reservoir 8 is equipped in tower bottom, offers third discharge port in the bottom of reservoir 8,
Third discharge port connects the entrance of the second air cooler 13 by pipeline, in the connecting pipe of third discharge port and the second air cooler 13
Equipped with column bottoms pump 12, the outlet of the second air cooler 13 connects material pot by pipeline, offers the 4th on the side wall of reservoir 8
Discharge port, the 4th discharge port connect material pot by pipeline, offer the second feedback outlet in the side wall in stripping section 6, and second time
Material mouth connects the discharge port of column bottoms pump 12 by pipeline, and rejected product freshening pipeline is connected in feed inlet, column bottoms pump 12
Discharge port is located at the feed inlet of tower top rectifying section 3 by pipeline connection, and the discharge port of column bottoms pump 12 connects the first water by pipeline
The shell-side outlet of the shell side inlet of cold heat exchanger 14, the first water cooling heat exchanger 14 connects material pot by pipeline, and the first water cooling is changed
The shell-side outlet of hot device 14 connects the second feedback outlet by pipeline, and all pipelines are equipped with flow control valve, pass through flow control
Valve carries out flow control to the material conveyed in pipeline, to realize efficient, steady, safety in production.
The separation of light alkylates and weight alkylates is carried out being steamed in tower 1 again at reduced pressure conditions, then is steamed tower 1 and be
Packed tower, tower top inside are equipped with a pumped vacuum systems, and tower top pump 10 takes out 1 from tower top oil trap 4#Weight alkane benzene, all the way in flow control
System is lower to carry out hot reflux, and another way is allocated as returning to tower top for cold reflux under flow control through the cooling rear portion of the first air cooler 11,
Another part is as 1#HAB discharging is sent into material pot under flow control carries out tinning storage.
The drawing liquid from tower bottom reservoir 8 of column bottoms pump 12 is used as 2 after the second air cooler 13 is cooling under flow control#
HAB, which is sent into material pot, carries out tinning storage, due to 2#The temperature of HAB is higher, flow is smaller, to guarantee that column bottoms pump 12 can be just
Often operating is equipped with temperature in the discharge port of column bottoms pump 12 and adjusts return valve, and when drop temperature is high, control a part is through the second sky
The heavy alkyl benzene after cooling of cooler 13 returns to stripping section 6 from the second feedback outlet, is recycled, to reduce outlet temperature.
Simultaneously for the rejected product extracted out by column bottoms pump 12 by the feed inlet of tuber drainage to enriching section 5 into
Row freshening, and a rejected product freshening pipeline is also had additional in feed inlet, the rejected product in material pot can be led to
It crosses the channel and is sent into and steam progress freshening operation in tower 1 again.In addition, in order to improve load, for the 2 of the extraction of column bottoms pump 12#HAB
It is sent under flow control by pipeline into the first water cooling heat exchanger 14 and is cooled down, and to material after cooling in flow control
Tinning storage is carried out in lower feeding material pot.
Wherein, it is equipped with radioactive isotope liquid-level indicating controller in the oil trap 4 and reservoir 8, by putting
Injectivity isotope liquid-level indicating controller, which is realized, carries out temperature detection to the material in oil trap 4 and reservoir 8.The same position of radioactivity
Plain liquid-level indicating controller is adapted to high temperature (or low temperature), high pressure (or low pressure), deep-etching, severe toxicity, sticky, crystallization, solid
A variety of harsh environments such as particle.Gamma ray level meter is used in radioactive isotope liquid-level indicating controller, gamma ray level meter passes through
Rationally design so that after ray passes through container, container itself to the certain value that is absorbed as of ray, variation only with container inner medium
Level (i.e. thickness) it is related.Gamma ray level meter is since its special measuring principle allows it to be not directly contacted with medium, no
It is influenced by characteristics such as medium temperature, viscosity, crystallization, burn into toxicity, states, not receptor pressure, material, wall thickness, shape etc.
Restriction, almost can be described as solve level gauging skeleton key.Therefore, it is solved in the industries such as petroleum, chemical industry, chemical fibre
Many measurement problems.
Specifically, the pumped vacuum systems includes condenser, steam jet ejector, interconderser, post-condenser, condenser
Outlet connection steam jet ejector suction chamber, interconderser entrance connection steam jet ejector outlet, intermediate condensation
The outlet of device and the outlet of post-condenser are all connected with fixed gas outlet.The fixed gas outlet connects the second water cooling by pipeline and changes
The shell side inlet of hot device 15, the shell-side outlet of the second water cooling heat exchanger 15 connect sour hydrocarbon and are layered tank 16, in addition, fixed gas outlet is also
Torch is connected by flare piping, the acid gas of fixed gas exit margin can be introduced into torch and carry out burning processing, with
Realize safety in production.
Further, the quantity of the tower top pump 10 and column bottoms pump 12, which is all provided with, is set to 2 sets, a preparation and a use.In this way to one
During set pump is cleaned, spare another set of pump is enabled, so that the continuous raw without stopping work of entire processing unit can be realized
It produces, improves yield.
Further, then steam tower 1 whole height and tower body diameter ratio be 10-100:1, the height of tower top rectifying section 3
Degree is the 5-10% for steaming 1 height of tower again, and the height of oil trap 4 is to steam the 3-6% of 1 height of tower again, and the height of enriching section 5 is again
The 50-60% of 1 height of tower is steamed, the height of stripping section 6 is to steam the 10-15% of 1 height of tower again.Energy is designed by reasonable height ratio
The processing capacity of tower 1 is steamed in enough effectively enhancings again, while can also improve the qualified product yield of material.
Technological means disclosed in the utility model is not limited only to technological means disclosed in above embodiment, also
Including technical solution consisting of any combination of the above technical features.It should be pointed out that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (7)
1. alkylbenzene rectification process device, it is characterised in that: steam tower, alkylbenzene recovery tower again including alkylbenzene, alkylbenzene steams again
Tower includes end socket, cylinder tower body, infundibulate tower bottom, fixed gas outlet is offered on end socket, between end socket and tower body top
Space is equipped with pumped vacuum systems, and the inner cavity of tower body is equipped with tower top rectifying section, oil trap, enriching section, stripping section from top to bottom,
It is equipped with U-shaped reboiler slot in the bottom of stripping section, reboiler is installed in reboiler slot, the tube side entrance of reboiler is from tower body
Side wall is led to be steamed outside tower again, and feed inlet is offered on the tower body side wall for being located at enriching section, and alkylbenzene recovery tower is logical
Piping connects feed inlet, offers the first feedback outlet on the tower body side wall of tower top rectifying section, and feed pump is equipped on pipeline,
The first discharge port is offered on the tower body side wall for being located at oil trap, is opened up on the tower body side wall being located at the top of enriching section
There is the second discharge port, the first and second discharge ports connect the first air cooler entrance by pipeline respectively, in the first discharge port and the
Pipeline between one air cooler is pumped equipped with tower top, and the outlet of the first air cooler connects the first feedback outlet and object by pipeline respectively
Batch can, stripping section are connected with tower bottom, and reservoir is equipped in tower bottom, offers third discharge port, third in the bottom of reservoir
Discharge port connects the entrance of the second air cooler by pipeline, and the connecting pipe of third discharge port and the second air cooler is equipped with tower bottom
The outlet of pump, the second air cooler connects material pot by pipeline, the 4th discharge port is offered on the side wall of reservoir, the 4th goes out
Material mouth connects material pot by pipeline, offers the second feedback outlet in the side wall of stripping section, the second feedback outlet is connected by pipeline
The discharge port of column bottoms pump, is connected with rejected product freshening pipeline in feed inlet, and the discharge port of column bottoms pump passes through pipeline connection position
In being connected with hot oil inlet and outlet piping on the feed inlet of tower top rectifying section, the tube side entrance of reboiler, the discharge port of column bottoms pump is logical
Piping connects the shell side inlet of the first water cooling heat exchanger, and the shell-side outlet of the first water cooling heat exchanger connects material by pipeline
The shell-side outlet of tank, the first water cooling heat exchanger connects the second feedback outlet by pipeline, and all pipelines are equipped with flow control valve.
2. alkylbenzene rectification process device as described in claim 1, which is characterized in that be all provided in the oil trap and reservoir
There is radioactive isotope liquid-level indicating controller.
3. alkylbenzene rectification process device as claimed in claim 2, which is characterized in that the pumped vacuum systems includes condensation
Device, steam jet ejector, interconderser, post-condenser, the suction chamber of the outlet connection steam jet ejector of condenser, intermediate condensation
The outlet of the entrance connection steam jet ejector of device, the outlet of interconderser and the outlet of post-condenser are all connected with fixed gas and go out
Mouthful.
4. alkylbenzene rectification process device as claimed in claim 3, which is characterized in that the quantity of the tower top pump and column bottoms pump
It is all provided with and is set to 2 sets, a preparation and a use.
5. alkylbenzene rectification process device as claimed in claim 4, which is characterized in that the fixed gas outlet is connected by pipeline
The shell side inlet of the second water cooling heat exchanger is connect, the shell-side outlet of the second water cooling heat exchanger connects sour hydrocarbon and is layered tank, in addition, fixed gas
Outlet also connects torch by flare piping.
6. alkylbenzene rectification process device as claimed in claim 5, which is characterized in that the end socket, tower body and tower bottom are
It is welded to connect, then the diameter ratio for the whole height and tower body for steaming tower is 10-100:1.
7. alkylbenzene rectification process device as claimed in claim 6, which is characterized in that the tower top rectifying section, oil trap, tower
Middle rectifying section, stripping section are connected, and the height of tower top rectifying section is to steam the 5-10% of tower height degree again, and the height of oil trap is again
The 3-6% of tower height degree is steamed, the height of enriching section is to steam the 50-60% of tower height degree again, and the height of stripping section is to steam tower height degree again
10-15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822265501.9U CN209702620U (en) | 2018-12-31 | 2018-12-31 | Alkylbenzene rectification process device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822265501.9U CN209702620U (en) | 2018-12-31 | 2018-12-31 | Alkylbenzene rectification process device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209702620U true CN209702620U (en) | 2019-11-29 |
Family
ID=68637991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822265501.9U Active CN209702620U (en) | 2018-12-31 | 2018-12-31 | Alkylbenzene rectification process device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209702620U (en) |
-
2018
- 2018-12-31 CN CN201822265501.9U patent/CN209702620U/en active Active
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