CN205774218U - A kind of new device of toluene oxidation energy recovery - Google Patents
A kind of new device of toluene oxidation energy recovery Download PDFInfo
- Publication number
- CN205774218U CN205774218U CN201620725227.7U CN201620725227U CN205774218U CN 205774218 U CN205774218 U CN 205774218U CN 201620725227 U CN201620725227 U CN 201620725227U CN 205774218 U CN205774218 U CN 205774218U
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- China
- Prior art keywords
- vapour
- soft water
- oxidation reaction
- flash separator
- liquid flash
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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
- Y02P20/10—Process efficiency
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The new device of a kind of toluene oxidation energy recovery of the present utility model, including oxidation reaction tower, hot water circulating pump and vapour-liquid flash separator, described vapour-liquid flash separator is arranged over byproduct steam outlet and supplements soft water import, below vapour-liquid flash separator tank body, cold water pumps into soft water coil pipe import by hot water circulating pump, described soft water coil pipe import connects oxidation reaction tower, and the generation heat of described oxidation reaction tower internal oxidition reaction is delivered to vapour-liquid flash separator by soft water coil outlets after being cooled down by the cold water that soft water coil pipe import is entered and is circulated.The heat that this thermal energy retracting device makes toluene oxidation reaction produce is timely and continuous print shifts, and adds uniformity and the seriality of oxidation reaction, decreases the generation of by-product, improves the production efficiency of device.
Description
Technical field
This utility model relates to chemical field, the new device of a kind of toluene oxidation energy recovery.
Background technology
Benzoic acid is a kind of important chemical products, is mainly used in the industries such as medicine, food, dyestuff, spice.Benzoic acid
Process synthetic method have multiple, currently mainly have toluene oxidation method, chlorination toluene method and phthalic anhydride to add thermal decarboxylation method
Deng.This device mainly uses toluene oxidation legal system to take benzoic acid: the oxygen in toluene and air is catalyst and 150-160 DEG C
At a temperature of carry out reaction generate benzoic acid.Toluene oxidation reaction is exothermic reaction, for ensureing the speed of toluene oxidation reaction, controls
Reaction temperature, reduces the by-product in oxidation reaction and the production of intermediate product, need to remove the heat that oxidation reaction produces.Stable
Reaction temperature be improve benzoic acid yield essential condition.
In toluene and air dioxygen oxidation reaction produce substantial amounts of heat, as can not timely transfer reaction produce heat
Amount, the reaction temperature abruptly increase of oxidation reaction tower, after intensification, reaction produces substantial amounts of by-product, and benzoic yield reduces.Existing
The temperature control method of oxidation reaction tower be to select circulating cooling water cooling, after the recirculated cooling water after intensification delivers to cooling tower cooling
Recycled.
There is following weak point in existing toluene oxidation reaction thermostatic mode: 1, uses the circulation after cooling tower cooling intensification
Water adds the investment cost of equipment, 2, the heat of oxidation reaction fail to utilize the significant wastage causing the energy, 3, whole device
Economic benefit poor.The deficiency existed for prior art, the purpose of this utility model is to provide a kind of simple in construction can
Lean on, the new device of a kind of toluene oxidation energy recovery of easy to operate practicality recycling.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of toluene oxidation energy recovery
New device.
The purpose of this utility model can be achieved through the following technical solutions:
The new device of a kind of toluene oxidation energy recovery, divides including oxidation reaction tower, hot water circulating pump and vapour-liquid flash distillation
From device, described vapour-liquid flash separator is arranged over byproduct steam outlet and supplements soft water import, vapour-liquid flash separator tank body
Lower section cold water pumps into soft water coil pipe import by hot water circulating pump, and described soft water coil pipe import connects oxidation reaction tower, described oxygen
Change producing after heat is cooled down of reaction tower internal oxidition reaction by the cold water that soft water coil pipe import is entered to be delivered to by soft water coil outlets
Vapour-liquid flash separator is circulated.
During work, the reaction of oxidation reaction tower internal oxidition produce after the cold water cooling that heat is entered by soft water coil pipe import by
Soft water coil outlets delivers to vapour-liquid flash separator, and flash separation in vapour-liquid flash separator, after separation, steam passes through by-product
Steam (vapor) outlet delivers to each process units steam gas point, and the liquid after separation delivers to oxidation reaction tower again through hot water circulating pump
Interior circulating cooling；The soft water supplemented enters vapour-liquid flash separator by supplementary soft water import.
The beneficial effects of the utility model: the heat that 1, thermal energy retracting device makes toluene oxidation reaction produce is timely
And continuous print transfer, add uniformity and the seriality of oxidation reaction, decrease the generation of by-product, improve the life of device
Produce efficiency；2: the steam after recovery can be used for the heating of other process units, has saved the energy, decreases energy consumption, saves and sets
Standby investment, improves the economic benefit of whole device；3: the structure setting of thermal energy retracting device is simple and convenient to operate, sets
Standby investment, maintenance and maintenance cost are low.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, the new device of a kind of toluene oxidation energy recovery, including oxidation reaction tower 1, hot water circulating pump 4
With vapour-liquid flash separator 5, described vapour-liquid flash separator 5 is arranged over byproduct steam outlet 6 and supplementary soft water import 7, vapour
Below liquid flash separator 5 tank body, cold water pumps into soft water coil pipe import 3 by hot water circulating pump 4, and described soft water coil pipe import 3 is even
Connecing oxidation reaction tower 1, the cold water that the generation heat of described oxidation reaction tower 1 internal oxidition reaction is entered by soft water coil pipe import 3 is cold
But delivered to vapour-liquid flash separator 5 by soft water coil outlets 2 after be circulated.
Idiographic flow: the heat that produces of oxidation reaction tower 1 internal oxidition reaction passes through the cold water cooling that soft water coil pipe import 3 is entered
After delivered to vapour-liquid flash separator 5 by soft water coil outlets 2, flash separation in vapour-liquid flash separator 5, after separation steam lead to
Crossing byproduct steam outlet 6 and deliver to each process units steam gas point, the liquid after separation delivers to oxygen again through hot water circulating pump 4
Change circulating cooling in reaction tower 1；The soft water supplemented enters vapour-liquid flash separator 5 by supplementary soft water import 7.
Above content is only to this utility model structure example and explanation, the technology people of affiliated the art
Described specific embodiment is made various amendment or supplements or use similar mode to substitute, without departing from reality by member
By novel structure or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (1)
1. a new device for toluene oxidation energy recovery, dodges including oxidation reaction tower (1), hot water circulating pump (4) and vapour-liquid
Steam separator (5), it is characterised in that described vapour-liquid flash separator (5) is arranged over byproduct steam outlet (6) and supplementary soft water
Import (7), below vapour-liquid flash separator (5) tank body, cold water pumps into soft water coil pipe import (3), institute by hot water circulating pump (4)
Stating soft water coil pipe import (3) and connect oxidation reaction tower (1), the generation heat of described oxidation reaction tower (1) internal oxidition reaction passes through
Delivered to vapour-liquid flash separator (5) by soft water coil outlets (2) after the cold water cooling that soft water coil pipe import (3) enters be circulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725227.7U CN205774218U (en) | 2016-07-11 | 2016-07-11 | A kind of new device of toluene oxidation energy recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725227.7U CN205774218U (en) | 2016-07-11 | 2016-07-11 | A kind of new device of toluene oxidation energy recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205774218U true CN205774218U (en) | 2016-12-07 |
Family
ID=58124785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620725227.7U Active CN205774218U (en) | 2016-07-11 | 2016-07-11 | A kind of new device of toluene oxidation energy recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205774218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151345A (en) * | 2017-07-25 | 2018-06-12 | 武汉有机实业有限公司 | Heat recovery method and its device are reacted during toluene liquid phase catalytic oxidation |
-
2016
- 2016-07-11 CN CN201620725227.7U patent/CN205774218U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151345A (en) * | 2017-07-25 | 2018-06-12 | 武汉有机实业有限公司 | Heat recovery method and its device are reacted during toluene liquid phase catalytic oxidation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |