CN207632729U - Propylene refining device - Google Patents
Propylene refining device Download PDFInfo
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- CN207632729U CN207632729U CN201721738660.5U CN201721738660U CN207632729U CN 207632729 U CN207632729 U CN 207632729U CN 201721738660 U CN201721738660 U CN 201721738660U CN 207632729 U CN207632729 U CN 207632729U
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Abstract
The utility model provides a kind of propylene refining device.The device includes stripper, polypropylene reactor and heat exchanger, and stripper setting needs to be refined propylene entrance, and stripper to propylene for carrying out stripping removal of impurities；Polypropylene reactor is provided with the outlet of high temperature gas-phase propene, and polypropylene reactor is for carrying out propylene polymerization；Heat exchanger, it is provided with the thermal medium entrance and corresponding cooling media outlet of thermal medium entrance, material inlet to be heated and heated material outlet corresponding with material inlet to be heated, wherein thermal medium entrance is connected with the outlet of high temperature gas-phase propene, heated material outlet is connected with propylene entrance to be refined, and material inlet to be heated waits for refined propylene to be passed through.Above-mentioned apparatus can be effectively improved the energy consumption and water resource waste problem of conventional polypropylene system.
Description
Technical field
The utility model is related to the gas-phase polymerization polypropylene technical fields based on coal-to-olefin, in particular to one kind third
Alkene refining plant.
Background technology
The techniques such as the typical technique of gas-phase polymerization polypropylene such as Unipol, INEOS, Novolen will be passed through gas phase in reactor
And liquid propylene, gas-phase propene are distributed for fluidizing, liquid propylene is for removing heat.Because of the polypropylene occurred in polypropylene reactor
The amount of heat that will produce is reacted, being added into the liquid phase polypropylene of reactor can occur to gasify and withdraw, the high temperature gas phase of discharge
Propylene will be in a condenser partial condensation at gas phase and liquid propylene, after transferring heat to recirculated water, gas phase and liquid phase
Propylene returns again to polypropylene reactor.
In addition, polypropylene reaction is higher to raw material propylene quality requirement, however the propylene generated by coal-to-olefin technology is not
Polymerization can be met to require, foreign gas wherein included, as oxygen, hydrogen will be purified in refined unit.Traditional propylene refining
Unit is provided with a stripper, is used for the bulk processing of foreign gas.Wait for refined propylene liguid raw material in stripper middle and upper part
Into a Steam reboiler is arranged in stripper bottom, provides heat source and propylene gasifies.Condenser, oxygen is arranged in stripper top
The impurity boiling point such as gas, hydrogen is relatively low, goes out as gas phase emission in stripper top row.
Usual stripper operation temperature is at 40~60 DEG C or so, and pressure is in 1.6~3.6MPa or so.And according to different gas
Phase method polymarization method for prodcing polyacrylates, between the temperature of the high temperature gas-phase propene being discharged in polypropylene reactor is about 65~70 DEG C, pressure is about
Between 2.2~3.8MPa.In existing propylene polymerization system, stripper bottom reboiler needs steam to heat, and high temperature
The heat that gas-phase propene carries needs a large amount of recirculated waters to remove heat within the condenser, therefore there is the condition for being exchanged with each other heat, but
The two does not carry out heat exchange, wastes a large amount of steam and valuable water resource.
Utility model content
The main purpose of the utility model is to provide a kind of propylene refining devices, to solve the propylene polymerization of the prior art
The problem that energy consumption present in system is big, water resource waste is serious.
To achieve the goals above, one side according to the present utility model provides a kind of propylene refining device, packet
It includes：Stripper, stripper setting need to be refined propylene entrance, and stripper to propylene for carrying out stripping removal of impurities；Polypropylene reacts
Device is provided with the outlet of high temperature gas-phase propene, and polypropylene reactor is for carrying out propylene polymerization；Heat exchanger is provided with hot Jie
Matter entrance and the corresponding cooling media outlet of thermal medium entrance, material inlet to be heated and corresponding with material inlet to be heated
Heated material outlet, wherein thermal medium entrance are connected with the outlet of high temperature gas-phase propene, and heated material outlet enters with propylene to be refined
Mouth is connected, and material inlet to be heated waits for refined propylene to be passed through.
Further, propylene refining device further includes reboiler, and reboiler is arranged in the lower part of stripper, for stripping
Propylene in the tower reactor of tower is vaporized.
Further, the tower top of stripper is provided with tower top outlet, and propylene refining device further includes condenser, and condenser is used
In the gas phase of condensation tower top outlet discharge.
Further, the top of stripper is additionally provided with reflux import, and condenser is provided with air inlet, foreign gas discharge
Mouth and condensate outlet, air inlet are connected with tower top outlet, and condensate outlet is connected with reflux import.
Further, heat exchanger includes：Shell is provided with material inlet and heated material outlet to be heated on shell；It changes
Pipe line, heat exchanging pipe is arranged in the inside of shell, and one end of heat exchanging pipe is thermal medium entrance, and the other end is cooling medium
Outlet.
Further, thermal medium entrance exports with high temperature gas-phase propene and is connected by heat medium pipeline.
Further, discharge branch is additionally provided in heat medium pipeline.
Further, reboiler is additionally provided with hot steam import and condensation water out corresponding with hot steam import.
Further, propylene entrance to be refined is arranged on the side wall higher than reboiler of stripper.
Further, condenser is additionally provided with recirculated water water inlet and recirculated water corresponding with recirculated water water inlet water outlet
Mouthful.
Using the technical solution of the utility model, a kind of propylene refining device is provided comprising stripper, polypropylene are anti-
Device and heat exchanger, stripper setting is answered to need to be refined propylene entrance, stripper to propylene for carrying out stripping removal of impurities；Polypropylene
Reactor is provided with the outlet of high temperature gas-phase propene, and polypropylene reactor is for carrying out propylene polymerization；Heat exchanger is provided with
Thermal medium entrance, cooling media outlet corresponding with thermal medium entrance, material inlet to be heated and with material inlet pair to be heated
The outlet of the heated material outlet answered, wherein thermal medium entrance and high temperature gas-phase propene is connected, heated material outlet and waits refining third
Alkene entrance is connected, and material inlet to be heated waits for refined propylene to be passed through.
Heat exchanger is increased in above-mentioned propylene refining device, polypropylene reactor discharge can be utilized using the heat exchanger
High temperature gas-phase propene first carries out heat exchange heating before waiting for that refined liquid propylene enters stripper as heat source to it.And it is former
This needs also to have carried out condensation process in the heat transfer process with the high temperature gas-phase propene that recirculated water is condensed.In this way, a side
The steam source in stripper bottom reboiler can be reduced or even be fully phased out in face, on the other hand save high temperature gas-phase propene
Circulating condensing water consumption, the energy consumption and water resource waste problem of conventional polypropylene system can be effectively improved in this way.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
In the accompanying drawings：
Fig. 1 shows the propylene refining schematic device of embodiment according to the present utility model.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, stripper；20, polypropylene reactor；30, heat exchanger；40, reboiler；50, condenser；21, thermal medium pipe
Road；22, branch is discharged.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As described in background technology part, that there are energy consumptions is big for propylene polymerization system in the prior art, water resource is unrestrained
Take serious problem.
To solve the above-mentioned problems, the utility model provides a kind of propylene refining device, as shown in Figure 1 comprising vapour
Stripper 10, polypropylene reactor 20 and heat exchanger 30, the setting of stripper 10 need refine propylene entrance, and stripper 10 is used for pair
Propylene carries out stripping removal of impurities；Polypropylene reactor 20 is provided with the outlet of high temperature gas-phase propene, and polypropylene reactor 20 is for carrying out
Propylene polymerization；Heat exchanger 30 is provided with thermal medium entrance, cooling media outlet corresponding with thermal medium entrance, material to be heated
Expect that entrance and heated material outlet corresponding with material inlet to be heated, wherein thermal medium entrance export phase with high temperature gas-phase propene
Even, heated material outlet is connected with propylene entrance to be refined, and material inlet to be heated waits for refined propylene to be passed through.
Heat exchanger is increased in above-mentioned propylene refining device provided by the utility model, can be utilized using the heat exchanger poly-
The high temperature gas-phase propene of propylene reactor discharge is as heat source, before waiting for that refined liquid propylene enters stripper, first to it
Carry out heat exchange heating.And it is cold to need the high temperature gas-phase propene condensed with recirculated water also to be carried out in the heat transfer process originally
Solidifying processing.In this way, on the one hand can reduce or even fully phase out the steam source in stripper bottom reboiler, on the other hand save
The about circulating condensing water consumption of high temperature gas-phase propene, can be effectively improved the energy consumption and water resource of conventional polypropylene system in this way
Waste problem.
The concrete operations flow of propylene refining device provided by the utility model is as follows：
It is traditionally carried out when driving.When the reaction in polypropylene reactor 20 reaches stable state, gradually to heat exchange
It is filled with propylene liguid to be refined in device 30, and introduces high temperature gas-phase propene into heat exchanger 30, the two exchanges heat.Work as heat exchanger
When high temperature gas-phase propene in 30 increases, pressure is gradually increasing, when vapor pressure is close to stripper operating pressure, after heat exchange
The gas phase propylene to be refined of formation is passed through stripper 10, while reducing liquid propylene to be refined original in stripper 10 and entering
Amount, until stopping entering.The liquid propylene to be refined of identical quantity becomes gas-phase propene by heat exchanger 30 and enters stripping at this time
Tower 10, system reaches stable state again.
In order to maintain the production stability of device in driving or high temperature gas-phase propene insufficient supply, in a kind of preferred reality
It applies in mode, propylene refining device further includes reboiler 40, and reboiler 40 is arranged in the lower part of stripper 10, for stripper
Propylene in 10 tower reactor is vaporized.For example, the gas phase formed after heat exchange propylene to be refined is passed through stripper 10, drop simultaneously
Original when refined liquid propylene inlet in low stripper 10, also Partial Liquid Phase propylene is directly entered in stripper 10
, reboiler 40 can heat this operative liquid propylene under lower load at this time, until stopping to close after being passed directly into
Close reboiler 40.
In a preferred embodiment, the tower top of stripper 10 is provided with tower top outlet, and propylene refining device also wraps
Condenser 50 is included, condenser 50 is used to condense the gas phase of tower top outlet discharge.Stripper 10 can be stripped using condenser 50
The propylene in foreign gas out is condensed, and foreign gas such as oxygen, hydrogen etc. is emitted.
In a preferred embodiment, the top of stripper 10 is additionally provided with reflux import, and condenser 50 is provided with
Air inlet, foreign gas floss hole and condensate outlet, air inlet are connected with tower top outlet, and condensate outlet is connected with reflux import.
The propylene condensed can be back to stripper 10 again in this way, to further increase refining effect.
In a preferred embodiment, heat exchanger 30 includes：Shell, be provided on shell material inlet to be heated and
Heated material outlet；Heat exchanging pipe, heat exchanging pipe is arranged in the inside of shell, and one end of heat exchanging pipe is thermal medium entrance,
The other end is cooling media outlet.In this way, in actual heat transfer process, propylene to be refined walks shell side, and high temperature gas-phase propene is walked
Tube side has better heat transfer effect.
In a preferred embodiment, thermal medium entrance passes through 21 phase of heat medium pipeline with the outlet of high temperature gas-phase propene
Even.
In a preferred embodiment, discharge branch 22 is additionally provided in heat medium pipeline 21.In this way, working as High Temperature Gas
When phase propylene amount is big, extra high temperature gas-phase propene can be sent directly into condensation phase by discharging branch 22, thus into one
Step maintains the stability of production.
In a preferred embodiment, reboiler 40 is additionally provided with hot steam import and corresponding with hot steam import
Condense water out.Heat can be provided to reboiler 40 by hot steam import when driving or producing unstable, so as to
Further increase the stability of production.
In a preferred embodiment, propylene entrance to be refined is arranged in the side higher than reboiler 40 of stripper 10
On wall.
In a preferred embodiment, condenser 50 be additionally provided with recirculated water water inlet and with recirculated water water inlet pair
The recirculated water water outlet answered.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：
Heat exchanger is increased in above-mentioned propylene refining device provided by the utility model, can be utilized using the heat exchanger poly-
The high temperature gas-phase propene of propylene reactor discharge is as heat source, before waiting for that refined liquid propylene enters stripper, first to it
Carry out heat exchange heating.And it is cold to need the high temperature gas-phase propene condensed with recirculated water also to be carried out in the heat transfer process originally
Solidifying processing.In this way, on the one hand can reduce or even fully phase out the steam source in stripper bottom reboiler, on the other hand save
The about circulating condensing water consumption of high temperature gas-phase propene, can be effectively improved the energy consumption and water resource of conventional polypropylene system in this way
Waste problem.
Specifically, for producing 300000 tons of polypropylene plants per year, condenser duty can reduce by 1/5, save recirculated water about 200
Ton hour, stripper need not use steam, save the low-pressure steam of about 1 ton hour, and the comprehensive benefit come to device band can
Up to 2,000,000 yuan/year or so.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of propylene refining device, which is characterized in that including：
Stripper (10), the stripper (10) setting need refine propylene entrance, the stripper (10) for propylene into
Row stripping removal of impurities；
Polypropylene reactor (20) is provided with the outlet of high temperature gas-phase propene, and the polypropylene reactor (20) is for carrying out propylene
Polymerisation；
Heat exchanger (30) is provided with thermal medium entrance, cooling media outlet corresponding with the thermal medium entrance, material to be heated
Entrance and heated material outlet corresponding with the material inlet to be heated, wherein the thermal medium entrance and the high temperature gas phase
Propylene outlet is connected, and the heated material outlet is connected with the propylene entrance to be refined, and the material inlet to be heated is used
Refined propylene is waited for be passed through.
2. propylene refining device according to claim 1, which is characterized in that the propylene refining device further includes reboiler
(40), reboiler (40) setting is in the lower part of the stripper (10), for in the tower reactor of the stripper (10)
Propylene is vaporized.
3. propylene refining device according to claim 1 or 2, which is characterized in that the tower top of the stripper (10) is arranged
It further includes condenser (50) to have tower top outlet, the propylene refining device, and the condenser (50) goes out for condensing the tower top
The gas phase of mouth discharge.
4. propylene refining device according to claim 3, which is characterized in that the top of the stripper (10) is additionally provided with
Flow back import, and the condenser (50) is provided with air inlet, foreign gas floss hole and condensate outlet, the air inlet with it is described
Tower top outlet is connected, and the condensate outlet is connected with the reflux import.
5. propylene refining device according to claim 1 or 2, which is characterized in that the heat exchanger (30) includes：
Shell is provided with the material inlet to be heated and the heated material outlet on the shell；
Heat exchanging pipe, the heat exchanging pipe is arranged in the inside of the shell, and one end of the heat exchanging pipe is that the heat is situated between
Matter entrance, the other end are the cooling media outlet.
6. propylene refining device according to claim 1 or 2, which is characterized in that the thermal medium entrance and the high temperature
Gas-phase propene outlet is connected by heat medium pipeline (21).
7. propylene refining device according to claim 6, which is characterized in that be additionally provided on the heat medium pipeline (21)
Discharge branch (22).
8. propylene refining device according to claim 2, which is characterized in that the reboiler (40) is additionally provided with hot steam
Import and condensation water out corresponding with the hot steam import.
9. propylene refining device according to claim 2, which is characterized in that the propylene entrance to be refined is arranged described
On the side wall higher than the reboiler (40) of stripper (10).
10. propylene refining device according to claim 3, which is characterized in that the condenser (50) is additionally provided with cycle
Water water inlet and recirculated water water outlet corresponding with the recirculated water water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738660.5U CN207632729U (en) | 2017-12-12 | 2017-12-12 | Propylene refining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738660.5U CN207632729U (en) | 2017-12-12 | 2017-12-12 | Propylene refining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207632729U true CN207632729U (en) | 2018-07-20 |
Family
ID=62863267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721738660.5U Active CN207632729U (en) | 2017-12-12 | 2017-12-12 | Propylene refining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207632729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112979845A (en) * | 2021-02-09 | 2021-06-18 | 河北海航石化新型材料有限公司 | Method and device for producing special grade electrical grade polypropylene |
| CN115677880A (en) * | 2022-10-31 | 2023-02-03 | 中安联合煤化有限责任公司 | Startup temperature rise control method of ethylene refining system |
-
2017
- 2017-12-12 CN CN201721738660.5U patent/CN207632729U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112979845A (en) * | 2021-02-09 | 2021-06-18 | 河北海航石化新型材料有限公司 | Method and device for producing special grade electrical grade polypropylene |
| CN115677880A (en) * | 2022-10-31 | 2023-02-03 | 中安联合煤化有限责任公司 | Startup temperature rise control method of ethylene refining system |
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