CN202122941U - Catalyst feeding device - Google Patents
Catalyst feeding device Download PDFInfo
- Publication number
- CN202122941U CN202122941U CN2011201344889U CN201120134488U CN202122941U CN 202122941 U CN202122941 U CN 202122941U CN 2011201344889 U CN2011201344889 U CN 2011201344889U CN 201120134488 U CN201120134488 U CN 201120134488U CN 202122941 U CN202122941 U CN 202122941U
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- valve
- air inlet
- storage tank
- inlet pipe
- catalyst
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Abstract
The utility model relates to chemical production equipment, in particular to a device for adding catalysts in production of trimellitic anhydride. The catalyst feeding device comprises an air inlet pipe for feeding compressed air into an oxidation tower, an air inlet pipe valve is arranged on the air inlet pipe, two sides of the air inlet pipe valve are communicated with a first bypass pipe and a second bypass pipe respectively, the first bypass pipe which is positioned on the upper position of the air inlet pipe valve is provided with a valve and connected to a storage tank. The second bypass pipe which is positioned on the lower position of the air inlet pipe valve is provided with a valve and connected with a discharging port at the lower end of the storage tank, and a feeding valve is arranged at a feeding port of the storage tank. The catalyst feeding device is capable of not only delivering air into the oxidation tower but also repeatedly adding catalysts into the storage tank for subsequent production. The catalyst feeding device is simple in structure, low in cost, convenient in use and free of power equipment such as motors and the like so as to be energy-saving. Accordingly, manufacturing cost and operation cost of the catalyst feeding device are evidently reduced, and the catalyst feeding device is quite simple in maintenance and stable and reliable in operation.
Description
Technical field
The utility model relates to chemical production equipment, is specifically related to be used to add in the trimellitic anhydride production device of catalyst.
Background technology
Trimellitic anhydride is the intermediate that is used to make products such as mylar and polyimide resin, has purposes widely.Its production technology is normally: in oxidizing tower; Under high temperature, high pressure, catalytic condition, be solvent with acetic acid; The pseudocumene of dissolving contacts with the compressed air that continues to feed; Oxygen in the air just generates trimellitic acid with the pseudocumene oxidation reaction; Then reaction mass dehydration slough in the still water and acetic acid both thick product, thick product rectified and collected in rectifying column obtains highly purified trimellitic anhydride, then the high-purity trimellitic acid acid anhydride of liquid state is cooled off to cut into slices with slicer to be packaged as product.
Wherein pseudocumene and the airborne oxygen condition of in oxidizing tower, carrying out oxidation reaction is comparatively harsh, is the hyperbaric environment of the high temperature and the 1.0～3.0Mpa of 180～280 deg.c in the oxidizing tower.Therefore it is extremely difficult will in tower, adding catalyst under this condition.But because the needs of technology, catalyst must join in the oxidizing tower in course of reaction again.
Catalyst solid-state in the prior art is dissolved in earlier in the solvent usually, is transported in the liquid phase feed in the reaction tower with high-pressure pump then.This has just caused the situation of using special high-pressure delivery pump to come pumping minute quantity material.Make expensive high-pressure pump be in idle state for a long time; And high-pressure pump constantly starts, stops and almost can't being in normal load condition operation, also is disadvantageous to the maintenance of high-pressure pump itself.And the acquisition cost of high-pressure delivery pump own is just very high.Be exactly to have caused the waste of device resource and production operation cost higher on the whole.
Summary of the invention
The main purpose of the utility model provides a kind of catalyst feeding device, and this device can be simple in structure, and equipment cost and operating cost are low.
For realizing the foregoing invention purpose; The technical scheme that the utility model adopted is: a kind of catalyst feeding device; Comprise in oxidizing tower, feeding compressed-air actuated air inlet pipe that the air inlet pipe valve is set on the described air inlet pipe, and the both sides of air inlet pipe valve link to each other with first, second bypass pipe respectively; First bypass pipe is positioned at the air inlet pipe valve downstream, valve is set on it and is connected to storage tank; Second bypass pipe is positioned at the air inlet pipe valve downstream, valve is set on it and is connected with the discharging opening of storage tank lower end; The charging aperture place of said storage tank is provided with the charging valve.
In the technique scheme, close the valve on first, second bypass pipe, open the air inlet pipe valve, then air inlet pipe the same with prior art in oxidizing tower bubbling air carry out chemical reaction.Open simultaneously the charging valve of storage tank can be under normal pressure that catalyst is added storage tank is for use.Close the charging valve of air inlet pipe valve and storage tank then; Open the valve on first, second bypass pipe; Then air gets into storage tank, and the catalyst in jar receives the air pressure effect to get into oxidizing tower along second bypass pipe and air inlet pipe, the chemical reaction in the catalytic tower.After catalyst in the storage tank got into oxidizing tower, compressed air can continue to feed oxidizing tower.Because the amount of catalyst usually seldom, can get into oxidizing tower fast, so the compressed-air actuated short time is interrupted the chemical reaction that can't influence in the tower.
Again with the air inlet pipe valve open, the valve closing on first, second bypass pipe, then air inlet pipe still delivers air in the tower, can repeat in storage tank, to add simultaneously catalyst again, in order to subsequent production.The employed parts of such feeding device all are conventional valve, pipeline, containers, and simple in structure, equipment cost is cheap, and easy to use, and do not need power-equipment such as motor, energy savings.Therefore the manufacturing cost and the operating cost of device significantly reduce.Maintenance, safeguard also very simple, stable and reliable operation.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of the another kind of embodiment of the utility model.
The specific embodiment
A kind of catalyst feeding device as shown in Figure 1; Comprise and in oxidizing tower 10, feed compressed-air actuated air inlet pipe 20; On the described air inlet pipe 20 air inlet pipe valve 21 is set; The both sides of air inlet pipe valve 21 link to each other with first, second bypass pipe 30,40 respectively, and first bypass pipe 30 is positioned at air inlet pipe valve 21 upper reaches, valve is set on it and is connected to storage tank 50; Second bypass pipe 40 is positioned at air inlet pipe valve 21 downstream, valve is set on it and is connected with the discharging opening of storage tank 50 lower ends; The charging aperture place of said storage tank 50 is provided with charging valve 61.
Be the acetum of added pseudocumene in the oxidizing tower 10 among the figure, the dotted line 70 among the figure is exactly the liquid level example of liquid material.The air that feeds through air inlet pipe 20 gets in the liquid material at the bottom of by tower, and contacts, reacts with liquid material.Catalyst also is dissolved as liquid state and joins in the storage tank 50 for use.The liquid level of catalyst is shown in the dotted line in the tank body among the figure. Open valve 31,41, close air inlet pipe valve 21 and charging valve 61, then can catalyst be added in the oxidizing tower.After catalyst add to be accomplished, open air inlet pipe valve 21, valve-off 31,41 is opened charging valve 61, and it is for use in the storage tank just can to repeat to add catalyst, so moves in circles to operate and produces.Use and convenient.
Preferably, described first bypass pipe 30 is connected the middle and upper part of storage tank 50 tank bodies.First bypass pipe 30 will be more than the liquid level of catalyst with the connecting portion of storage tank 50 in other words like Fig. 1,2, and such benefit is exactly, when in oxidizing tower, adding catalyst; Air directly feeds catalyst liquid level top; Avoiding compressed air to get into below the catalyst liquid level, overflow bubbling in the process of liquid level then and produce noise and shake with tank body, is to be beneficial to improve production environment like this; Simultaneously also help device and operate steadily, improve service life of equipment.
Further, as shown in Figure 2, the charging aperture of described storage tank 50 is positioned at the upper end of storage tank 50 tank bodies, is connected body 62, the first bypass pipes 30 between charging aperture and the charging valve 61 and is communicated with storage tank 50 through body 62.Being connected body 62, the first bypass pipes 30 between charging aperture and the charging valve 61 is communicated with storage tank 50 through body 62.Just get into first bypass pipe 30 and get into body 62 then, enter into then in the storage tank 50 by the compressed air of air inlet pipe 20.The outstanding benefit of doing so just is: can utilize compressed air to purge body 62 inner chambers, avoid that catalyst solidifies, crystallization and stop up charging aperture or body 62, guarantee the device stable and reliable operation.
Simultaneously can also on described storage tank 50, meter be set.Can confirm to add to the amount of the catalyst in the storage tank 50 so easily, be convenient to the reinforced operation of catalyst.Because catalyst joins the operation of storage tank 50 at atmospheric operation, can be one of multiple existing embodiment so can play the meter of metering effect.The electromagnetism pound that scale that for example is provided with on the tank skin or liquid level gauge or integral body are weighed to storage tank etc.
Claims (4)
1. catalyst feeding device; Comprise and in oxidizing tower (10), feed compressed-air actuated air inlet pipe (20); It is characterized in that: air inlet pipe valve (21) is set on the described air inlet pipe (20); The both sides of air inlet pipe valve (21) link to each other with first, second bypass pipe (30,40) respectively, and first bypass pipe (30) is positioned at air inlet pipe valve (21) upper reaches, valve is set on it and is connected to storage tank (50); Second bypass pipe (40) is positioned at air inlet pipe valve (21) downstream, valve is set on it and is connected with the discharging opening of storage tank (50) lower end; The charging aperture place of said storage tank (50) is provided with charging valve (61).
2. a kind of catalyst feeding device according to claim 1 is characterized in that: described first bypass pipe (30) is connected the middle and upper part of storage tank (50) tank body.
3. a kind of catalyst feeding device according to claim 1; It is characterized in that: the charging aperture of described storage tank (50) is positioned at the upper end of storage tank (50) tank body; Be connected body (62) between charging aperture and the charging valve (61), first bypass pipe (30) is communicated with storage tank (50) through body (62).
4. according to claim 1 or 2 or 3 described a kind of catalyst feeding devices, it is characterized in that: described storage tank (50) is provided with the meter of confirming the catalyst addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201344889U CN202122941U (en) | 2011-04-29 | 2011-04-29 | Catalyst feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201344889U CN202122941U (en) | 2011-04-29 | 2011-04-29 | Catalyst feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202122941U true CN202122941U (en) | 2012-01-25 |
Family
ID=45486013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201344889U Expired - Fee Related CN202122941U (en) | 2011-04-29 | 2011-04-29 | Catalyst feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202122941U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043713A (en) * | 2012-12-28 | 2013-04-17 | 宁波新福钛白粉有限公司 | Device for adding solid organic surface treatment agent for titanium dioxide |
| CN104061791A (en) * | 2014-07-10 | 2014-09-24 | 永兴县鹏洋银铅有限责任公司 | Device for supplying catalyst to smelting furnace |
| CN107008209A (en) * | 2017-05-12 | 2017-08-04 | 江苏琦衡农化科技有限公司 | A kind of catalyst shot tank for trichloro-acetic chloride chlorination reaction |
| CN108654519A (en) * | 2018-06-07 | 2018-10-16 | 山东京博石油化工有限公司 | It is a kind of to add agent device and plus agent method for catalyst hydrothermal aging system |
-
2011
- 2011-04-29 CN CN2011201344889U patent/CN202122941U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043713A (en) * | 2012-12-28 | 2013-04-17 | 宁波新福钛白粉有限公司 | Device for adding solid organic surface treatment agent for titanium dioxide |
| CN103043713B (en) * | 2012-12-28 | 2014-08-20 | 宁波新福钛白粉有限公司 | Device for adding solid organic surface treatment agent for titanium dioxide |
| CN104061791A (en) * | 2014-07-10 | 2014-09-24 | 永兴县鹏洋银铅有限责任公司 | Device for supplying catalyst to smelting furnace |
| CN107008209A (en) * | 2017-05-12 | 2017-08-04 | 江苏琦衡农化科技有限公司 | A kind of catalyst shot tank for trichloro-acetic chloride chlorination reaction |
| CN108654519A (en) * | 2018-06-07 | 2018-10-16 | 山东京博石油化工有限公司 | It is a kind of to add agent device and plus agent method for catalyst hydrothermal aging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20190429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |