CN208449329U - A kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide - Google Patents
A kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide Download PDFInfo
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- CN208449329U CN208449329U CN201820854245.4U CN201820854245U CN208449329U CN 208449329 U CN208449329 U CN 208449329U CN 201820854245 U CN201820854245 U CN 201820854245U CN 208449329 U CN208449329 U CN 208449329U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
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Abstract
A kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide, comprising: membrane separator, if injection point, catalyst outlet, reaction solution export；First, second centrifuge sets feed inlet, catalyst outlet, wastewater outlet, useless methanol outlet respectively；First centrifugation machine inlet is connected to membrane separator catalyst outlet；Catalyst regeneration reactor, sets feed inlet, waste liquid outlet, dioxygen water inlet, regenerated catalyst outlet respectively, and feed inlet is connected to the first centrifuge catalyst outlet；The catalyst regeneration reactor regenerated catalyst outlet is connected to the second centrifugation machine inlet；At least one alcohol storage tank, alcohol outlet are connected to the first, second centrifugation machine inlet respectively, and useless alcohol import is connected to the useless methanol outlet of the first, second centrifuge respectively；At least one water storage tank sets water out, recycling water inlet；The water out of the water storage tank is connected to the first, second centrifugation machine inlet respectively.
Description
Technical field
The utility model belongs to the catalyst regeneration process technical field in propylene oxide preparation, and in particular to a kind of dioxygen
Water ring propylene oxide prepares the catalyst regeneration device of propylene oxide.
Background technique
In recent years, domestic propylene oxide (PO) production capacity was at 3,000,000 tons/year, and demand is every year all with 5-10%'s
Growth rate expands.Propylene oxide is the third-largest acryloyl derivative in addition to polypropylene and acrylonitrile, is important and organises substantially
Work synthesis material, mainly for the production of polyethers, propylene glycol etc..It is also forth generation detergent nonionic surfactant, oil field
The primary raw material of demulsifier, farm chemical emulgent etc..
Currently, Synthesis of Propylene Oxide mainly has chlorohydrination, conjugated oxidation and direct oxidation method, wherein first two
All there is the defects of at high cost, pollution is big in production method.And direct oxidation rule be under the action of titanium-silicon molecular sieve catalyst,
Using the method for hydrogen peroxide direct oxidation propylene synthesizing epoxypropane, this method has mild condition, simple process, product selection
Property it is good and environmental-friendly the features such as, therefore, using the direct oxidation of titanium molecular sieve catalysis epoxidation of propylene synthesizing epoxypropane
Method is considered as the development trend of propylene oxide synthetic technology.
Compared with consuming a large amount of fresh catalyst, the effective regeneration of Titanium Sieve Molecular Sieve and utilization are with superiority in economy
's.Currently, most of techniques carry out the regeneration of molecular sieve catalyst by the way of calcining after washing, regenerative response condition is severe
It carves, complex procedures improve production cost to a certain extent.
Therefore, it is that production of propylene oxide producer is urgently to be resolved that exploitation, which has simple and universality catalyst regeneration device,
Problem.
Summary of the invention
The purpose of this utility model is to provide the catalyst regenerations that a kind of hydrogen peroxide epoxidation propylene prepares propylene oxide
Device can prepare the catalyst in propylene oxide using this device to hydrogen peroxide epoxidation propylene and carry out intermittent regeneration treatment,
The device is simple and efficient, easily operated, can not only realize efficiently separating for catalyst slurry, it is also ensured that first in whole system
The cycling and reutilization of pure and mild desalted water, cuts operating costs, and has good economy, the value of environmental protection.
To achieve the above object, the technical solution of the utility model is:
A kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide comprising, membrane separator is set
Mixed serum entrance, catalyst outlet, reaction solution outlet；First centrifuge, upper part set feed inlet, and bottom sets catalyst respectively
Outlet, wastewater outlet, useless methanol outlet；The feed inlet of first centrifuge is connected by the catalyst outlet of pipeline and membrane separator
It is logical；The wastewater outlet of first centrifuge passes through pipeline and waste water recycling device system connectivity；Catalyst regeneration reactor, upper part
If feed inlet, dioxygen water inlet, lower part set regenerated catalyst outlet, bottom sets waste liquid outlet；The catalyst regeneration reactor
Feed inlet be connected to the catalyst outlet of the first centrifuge by pipeline；Second centrifuge, upper part set feed inlet, bottom point
Catalyst outlet, wastewater outlet, useless methanol outlet are not set；The feed inlet of second centrifuge passes through pipeline and the catalyst regeneration
The regenerated catalyst outlet of reactor is connected to；The catalyst outlet of second centrifuge connects a make-up tank by pipeline；At least one
A alcohol storage tank, sets at least one alcohol outlet, at least one useless alcohol import, at least one useless alcohol outlet, at least one recycling alcohol
Import；The alcohol outlet of the alcohol storage tank is connected with the feed inlet of the feed inlet of the first centrifuge, the second centrifuge respectively by pipeline
Logical, the useless alcohol import of the alcohol storage tank passes through the pipeline useless first with the useless methanol outlet of the first centrifuge, the second centrifuge respectively
Alcohol outlet connection；The useless alcohol outlet of the alcohol storage tank, recycling alcohol import are connected to alcohol distillation system respectively by pipeline；At least one
A water storage tank sets at least one water out, at least one recycling water inlet；The water out of the water storage tank is distinguished by pipeline
It is connected to the feed inlet of the feed inlet of the first centrifuge, the second centrifuge；The recycling water inlet of the water storage tank passes through pipeline point
Not with waste water recycling device system connectivity.
Further, the wastewater outlet of first centrifuge, useless methanol outlet are an opening, and accordingly setting one shares
Pipeline, the useless alcohol import of former alcohol corresponding storage tank, the pipeline of waste water recycling device system are connected to the common conduit altogether.
The wastewater outlet of second centrifuge, useless methanol outlet are an opening, and a common conduit are accordingly arranged, former
The useless alcohol import of alcohol corresponding storage tank, the pipeline of waste water recycling device system are connected to the common conduit altogether.
The catalyst regeneration reactor is slurry hearth reactor.
The catalyst regeneration reactor interior reaction temperature is 70-180 DEG C, and reaction pressure 0-2.0MPa, reaction time is
1-8h。
Preferably, the catalyst regeneration reactor feed mouth position is lower than the catalyst outlet position of the first centrifuge.
Preferably, catalyst regeneration device of the present invention includes two alcohol storage tanks.
Preferably, catalyst regeneration device of the present invention includes a water storage tank.
When the utility model is implemented, it is cooling that epoxidation reaction in the technique of propylene oxide is prepared from hydrogen peroxide epoxidation propylene
(catalyst slurry is fine grained deactivated titanium silicon molecular sieve, portion of product propylene oxide and not to the catalyst slurry that device bottom comes out
React the mixture of propylene) enter membrane separator and is separated, isolated reaction solution (including epoxy the third product alkane and unreacted
Propylene) and inactive titanium silicon molecule sieve catalyst, reaction solution can enter knockout tower and be recycled, inactive titanium silicon molecule sieve catalyst into
Enter the first centrifuge and carry out alcohol respectively to wash, wash (desalted water).Titanium Sieve Molecular Sieve after washing is sent to catalyst regeneration reactor,
Hydrogen peroxide enters from top, to carry out catalyst regeneration reaction in catalyst regeneration reactor, catalyst after regeneration into
Enter the second centrifuge and carry out alcohol respectively to wash, wash and effectively remove remaining hydrogen peroxide, the regenerated catalyst after washing is pressed with methanol
Ratio reenters hydrogen peroxide epoxidation propylene preparation propylene oxide process and participates in reaction after being prepared.
The utility model generate the utility model has the advantages that
The utility model prepares the catalyst in propylene oxide to hydrogen peroxide epoxidation propylene and has carried out at intermittent regeneration
Reason has two lock out operation units of membrane separator and centrifuge, can efficiently accomplish the isolated inactivation of catalyst slurry
Titanium-silicon molecular sieve catalyst, decaying catalyst is entered back into catalyst regeneration reactor and is regenerated using hydrogen peroxide, to realize
The regeneration of catalyst and the recycling of reaction solution.
In the utility model, alcohol washing lotion or waste water after the first centrifuge, the second centrifuge alcohol are washed, washed are discharged into respectively
Alcohol distillation system, waste water recycling device system are recycled, and treated alcohol and water is reflowable in alcohol storage tank, water storage tank
It reuses, entire process does not consume methanol, desalted water raw material additionally, economical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the present invention.
Specific embodiment
The utility model is described in further detail with attached drawing combined with specific embodiments below, but the protection model of the utility model
It encloses without being limited thereto.
Referring to Fig. 1, a kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide, comprising:
Membrane separator 1 sets mixed serum entrance 11, catalyst outlet 12, reaction solution outlet 13；
First centrifuge 2, upper part set feed inlet 21, and bottom sets catalyst outlet 22, wastewater outlet 23, useless methanol respectively
Outlet 24；The feed inlet 21 of first centrifuge 2 is connected to by pipeline with 1 catalyst outlet 12 of membrane separator；First centrifuge 2
Wastewater outlet 23 passes through pipeline and waste water recycling device system connectivity；
Catalyst regeneration reactor 3, upper part set feed inlet 31, dioxygen water inlet 32, and lower part sets regenerated catalyst outlet
33, bottom sets waste liquid outlet 34；3 feed inlet of catalyst regeneration reactor, 31 position goes out lower than 2 catalyst of the first centrifuge
22 positions of mouth；3 feed inlet 31 of catalyst regeneration reactor is connected by the catalyst outlet 22 of pipeline and the first centrifuge 2
It is logical；
Second centrifuge 4, upper part set feed inlet 41, and bottom sets catalyst outlet 42, wastewater outlet 43, useless methanol respectively
Outlet 44；The feed inlet 41 of second centrifuge 4 is connected by pipeline and 3 regenerated catalyst outlet 33 of catalyst regeneration reactor
It is logical；Second centrifuge, 4 catalyst outlet 42 connects a make-up tank 5 by pipeline；The wastewater outlet 43 of second centrifuge 4 passes through pipe
Road and waste water recycling device system connectivity；
Two alcohol storage tanks 6,6 ' respectively set alcohol outlet 61,61 ', a useless alcohol import 62,62 ', a useless alcohol outlet
63,63 ', a recycling alcohol import 64,64 '；The alcohol outlet 61 of the alcohol storage tank 6 passes through 2 feed inlet of pipeline and the first centrifuge
21 connections, the useless alcohol import 62 of the alcohol storage tank 6 are connected to by pipeline and the first centrifuge 2 alcohol outlet 24 of giving up；The alcohol storage tank
6 ' alcohol outlet 61 ' is connected to by pipeline with 4 feed inlet 41 of the second centrifuge, and the useless alcohol import 62 ' of the alcohol storage tank 6 ' passes through
Pipeline and the second centrifuge 4 alcohol outlet 44 of giving up are connected to；The useless alcohol outlet 63 of the alcohol storage tank 6,6 ', 63 ', recycling alcohol import 64,
64 ' are connected to alcohol distillation system respectively by pipeline；
One water storage tank 7 sets two water outs 71,72, a recycling water inlet 73；The water out of the water storage tank 7
71 are connected to by pipeline with 2 feed inlet 21 of the first centrifuge, and the water out 72 of the water storage tank 7 passes through pipeline and the second centrifuge
The connection of 4 feed inlets 41；The water storage tank 7 recycles water inlet 73 and passes through pipeline and waste water recycling device system connectivity.
Further, the catalyst regeneration reactor 3 is slurry hearth reactor.
3 interior reaction temperature of catalyst regeneration reactor is 70-180 DEG C, and reaction pressure 0-2.0MPa, reaction time is
1-8h。
When the present embodiment is implemented, epoxidation reaction cooler in the technique of propylene oxide is prepared from hydrogen peroxide epoxidation propylene
Bottom come out catalyst slurry (catalyst slurry ingredient be fine grained deactivated titanium silicon molecular sieve, portion of product propylene oxide and
Unreacting propylene) enter membrane separator 1 through pipeline and is separated, isolated reaction solution (including epoxy the third product alkane and not anti-
Answer propylene) and inactive titanium silicon molecule sieve catalyst, reaction solution sent to knockout tower by pipeline by reaction solution outlet 13 and recycled,
Deactivated titanium silicon molecular sieve is discharged from catalyst outlet 12 and is separated through pipeline the first centrifuge 2 of feeding, urges in the first centrifuge 2
Agent first carries out alcohol by the methanol washing lotion in alcohol storage tank 6 and washes, alcohol wash after methanol cleaning solution recycling to alcohol storage tank 6, then send to
Alcohol distillation system；Then it is washed again by the desalted water in water storage tank 7, the waste water after washing is gone out by 2 waste water of the first centrifuge
Mouthfuls 23 discharges are sent to waste water recycling device system, alcohol wash+wash after catalyst cake water capacity 28%, then send to catalyst
Regeneration reactor 3, the catalyst regeneration reactor 3 are slurry hearth reactor, and regenerative response temperature is 110 DEG C, regenerative response
Time is 2h, and operating pressure is normal pressure, and hydrogen peroxide is entered by the dioxygen water inlet 32 on 3 top of catalyst regeneration reactor, dioxygen
Water consumption is 5 times of catalyst dry measure；Catalyst slurry after regeneration is sent to the second centrifuge 4 by alcohol storage tank 6 ' and water storage tank 7
Interior methanol and desalted water carries out alcohol respectively and washes, washes, and realizes and is separated by solid-liquid separation, primarily to effectively removing residual hydrogen peroxide,
Cleaning solution is sent respectively to alcohol distillation system, the recycling of waste water recycling device system, regenerated catalyst filter cake after washing by second from
4 catalyst outlet 42 of scheming is sent to configured slot 5, after regenerated catalyst and methanol are prepared in proportion in make-up tank 5 again
It is recycled into reactor.
In the utility model, the cleaning solution in the first centrifuge 2, after 4 alcohol of the second centrifuge is washed or washed is sent respectively to alcohol
Distillation system, waste water recycling device system are recycled, treated alcohol and water it is reflowable in alcohol storage tank, water storage tank again
Secondary use.
Claims (8)
1. a kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide, including,
Membrane separator sets mixed serum entrance, catalyst outlet, reaction solution outlet；
First centrifuge, upper part set feed inlet, and bottom sets catalyst outlet, wastewater outlet, useless methanol outlet respectively；First from
The feed inlet of scheming is connected to by pipeline with the catalyst outlet of membrane separator；The wastewater outlet of first centrifuge by pipeline with
Waste water recycling device system connectivity；
Catalyst regeneration reactor, upper part set feed inlet, dioxygen water inlet, and lower part sets regenerated catalyst outlet, and bottom sets useless
Liquid outlet；The feed inlet of the catalyst regeneration reactor is connected to by pipeline with the catalyst outlet of the first centrifuge；
Second centrifuge, upper part set feed inlet, and bottom sets catalyst outlet, wastewater outlet, useless methanol outlet respectively；Second from
The feed inlet of scheming is connected to by pipeline with the regenerated catalyst outlet of the catalyst regeneration reactor；Second centrifuge is urged
Agent outlet connects a make-up tank by pipeline；
At least one alcohol storage tank, sets at least one alcohol outlet, at least one useless alcohol import, at least one useless alcohol outlet, at least
One recycling alcohol import；The alcohol outlet of the alcohol storage tank by pipeline respectively with the feed inlet of the first centrifuge, the second centrifuge
Feed inlet connection, the useless alcohol import of the alcohol storage tank by pipeline respectively with the useless methanol outlet of the first centrifuge, second from
The useless methanol outlet of scheming is connected to；The useless alcohol outlet of the alcohol storage tank, recycling alcohol import by pipeline respectively with alcohol distillation system
Connection；
At least one water storage tank sets at least one water out, at least one recycling water inlet；The water out of the water storage tank is logical
Piping is connected to the feed inlet of the feed inlet of the first centrifuge, the second centrifuge respectively；The recycling water inlet of the water storage tank
By pipeline respectively with waste water recycling device system connectivity.
2. catalyst regeneration device according to claim 1, which is characterized in that the wastewater outlet of first centrifuge,
Useless methanol outlet is an opening, and a common conduit is accordingly arranged, the useless alcohol import of former alcohol corresponding storage tank, waste water recycling device
The pipeline of system is connected to the common conduit altogether.
3. catalyst regeneration device according to claim 1, which is characterized in that the wastewater outlet of second centrifuge,
Useless methanol outlet is an opening, and a common conduit is accordingly arranged, the useless alcohol import of former alcohol corresponding storage tank, waste water recycling device
The pipeline of system is connected to the common conduit altogether.
4. catalyst regeneration device according to claim 1, which is characterized in that the catalyst regeneration reactor is slurry
Hearth reactor.
5. catalyst regeneration device according to claim 1 or 4, which is characterized in that in the catalyst regeneration reactor
Reaction temperature is 70-180 DEG C, reaction pressure 0-2.0MPa, reaction time 1-8h.
6. catalyst regeneration device according to claim 1, which is characterized in that the catalyst regeneration reactor feed mouth
Position is lower than the catalyst outlet position of the first centrifuge.
7. catalyst regeneration device according to claim 1, which is characterized in that the catalyst regeneration device includes two
Alcohol storage tank.
8. catalyst regeneration device according to claim 1, which is characterized in that the catalyst regeneration device includes one
Water storage tank.
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| CN201820854245.4U CN208449329U (en) | 2018-06-04 | 2018-06-04 | A kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide |
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| CN201820854245.4U CN208449329U (en) | 2018-06-04 | 2018-06-04 | A kind of hydrogen peroxide epoxidation propylene prepares the catalyst regeneration device of propylene oxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717130A (en) * | 2021-10-08 | 2021-11-30 | 中化学科学技术研究有限公司 | Continuous production device and method of epoxy cyclohexane |
-
2018
- 2018-06-04 CN CN201820854245.4U patent/CN208449329U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717130A (en) * | 2021-10-08 | 2021-11-30 | 中化学科学技术研究有限公司 | Continuous production device and method of epoxy cyclohexane |
| CN113717130B (en) * | 2021-10-08 | 2024-04-05 | 中化学科学技术研究有限公司 | Continuous production method of epoxycyclohexane |
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