CN215139654U - Reation kettle evacuation structure for tetrabromobenzene anhydride preparation - Google Patents

Abstract

The utility model discloses a tetrabromobenzoic anhydride preparation is with reation kettle evacuation structure, including reation kettle cover and buffer tank, the cauldron cover matches the setting with reation kettle, and reation kettle and buffer tank all set up subaerial, the charging connector that is provided with position symmetry on the cauldron cover, be provided with corresponding stopper in the charging connector, through the exhaust tube intercommunication in buffer tank and the reation kettle, be provided with the first automatically controlled valve that corresponds on the exhaust tube, first automatically controlled valve is located reation kettle and buffer tank external world, run through on the buffer tank and be provided with the blast pipe, and the fixed plate that is provided with of reation kettle's lateral wall lower extreme is kept away from to the buffer tank, the fixed aspiration pump that is provided with the blast pipe intercommunication of lateral wall on the fixed plate, the one end that the buffer tank was kept away from to the blast pipe is provided with the second automatically controlled valve that matches. The utility model discloses in the reation kettle was added to the raw materials of conveniently preparing tetrabromophthalic anhydride, reduced the potential safety hazard that exists in the preparation process, also improved the interpolation efficiency of raw materials simultaneously.

Description

Reation kettle evacuation structure for tetrabromobenzene anhydride preparation

Technical Field

The utility model relates to a tetrabromophthalic anhydride preparation technical field especially relates to a tetrabromophthalic anhydride preparation is with reation kettle evacuation structure.

Background

Tetrabromophthalic anhydride is an important fine chemical industry organic synthetic substance, as additive fire retardant and the cooperation of trioxide , be used for polystyrene, polypropylene, polyethylene and ABG resin, and can be used for other engineering plastics and synthetic materials, still can be used for the synthesis of other fine chemicals, in the actual life, in preparing tetrabromophthalic anhydride, need to drop strong sulfuric acid solution to the reation kettle at first, and the glass container that mostly holds strong sulfuric acid solution through the suspension height utilizes the gravity of strong sulfuric acid to add, if the glass container is damaged the fracture emergence and can seriously burn staff's skin, simultaneously this rate of adding raw materials is lower, influence tetrabromophthalic anhydride preparation efficiency, need design a tetrabromophthalic anhydride preparation and use reation kettle vacuum structure to solve these problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of great potential safety hazard and low preparation efficiency of tetrabromophthalic anhydride in the prior art, and providing a vacuum pumping structure of a reaction kettle for preparing tetrabromophthalic anhydride.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a tetrabromobenzoic anhydride preparation is with reation kettle evacuation structure, includes reation kettle cover and buffer tank, the cauldron cover matches the setting with reation kettle, and reation kettle and buffer tank all set up subaerial, be provided with the charging connector of position symmetry on the cauldron cover, be provided with in the charging connector and correspond and keep off the material stopper, through the exhaust tube intercommunication in buffer tank and the reation kettle, be provided with the first automatically controlled valve that corresponds on the exhaust tube, first automatically controlled valve is located reation kettle and buffer tank are external, it is provided with the blast pipe to run through on the buffer tank, and the fixed plate that is provided with of reation kettle's lateral wall lower extreme is kept away from to the buffer tank, the fixed aspiration pump that is provided with the blast pipe intercommunication of lateral wall on the fixed plate, the one end that the buffer tank was kept away from to the blast pipe is provided with the second automatically controlled valve that matches.

Preferably, the exhaust tube is arranged in an inverted U shape, and one end of the exhaust tube, which is far away from the buffer tank, is provided with a first one-way valve, and the first one-way valve is located in the reaction kettle.

Preferably, the upper end of the buffer tank is provided with a matched pressure gauge.

Preferably, the exhaust pipe is arranged in an L shape, and a second one-way valve is arranged at one end of the exhaust pipe, which is far away from the second electric control valve, and the second one-way valve is positioned in the buffer tank.

Preferably, the fixing plate is made of stainless steel material.

Preferably, a circle of sealing gasket with uniform thickness is arranged at the joint of the kettle cover and the reaction kettle.

Preferably, lateral wall all is provided with the even supporting leg of multiunit under reation kettle and the buffer tank, every the equal fixed bolster of supporting leg lower extreme establishes one deck grid line silica gel pad.

The utility model has the advantages that: through the buffer tank, the exhaust tube, the blast pipe, the cooperation of aspiration pump is used, can be before reinforced in to reation kettle, carry out the evacuation state to reation kettle, in the reation kettle was added to the raw materials of conveniently preparing tetrabromophthalic anhydride, need not to hold easy putting in eminence of strong sulphuric acid, the potential safety hazard that exists in the preparation process has been reduced, the interpolation efficiency of raw materials has also been improved simultaneously, through the setting of pressure gauge, can be through observing the reading on the pressure gauge and then confirm the state to evacuation in the reation kettle, make the evacuation process visual.

Drawings

FIG. 1 is a general schematic view of a vacuum pumping structure of a reaction kettle for preparing tetrabromobenzoic anhydride, which is provided by the utility model;

FIG. 2 is the utility model provides a schematic diagram of a cross-sectional view of reation kettle evacuation structure for tetrabromobenzoic anhydride preparation.

In the figure: 1 reation kettle, 2 kettle lids, 3 buffer tanks, 4 exhaust tubes, 5 first automatically controlled valves, 6 charging nozzles, 7 blast pipes, 8 fixed plates, 9 aspiration pumps, 10 second automatically controlled valves, 11 pressure gauges, 12 first check valves, 13 second check valves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a tetrabromobenzoic anhydride preparation is with reation kettle evacuation structure, including reation kettle 1 kettle cover 2 and buffer tank 3, kettle cover 2 and reation kettle 1 are matchingly set up, kettle cover 2 and reation kettle 1 junction are provided with a circle of seal ring of even thickness, the leakproofness between kettle cover 2 and reation kettle 1 is improved through the setting of seal ring, it is convenient to carry out evacuation treatment to reation kettle 1, and reation kettle 1 and buffer tank 3 are all set up on the ground, reation kettle 1 and buffer tank 3 lower wall all are provided with the even supporting leg of multiunit, the lower extreme of each supporting leg is all fixed the pad and is provided with a layer of net line silica gel pad, through the setting of net line silica gel pad improve the overall stability of the utility model, buffer tank 3 upper end is provided with matched pressure gauge 11, through the setting of pressure gauge 11, can confirm the state of evacuation in reation kettle 1 through observing the reading on pressure gauge 11, the vacuumizing process is visualized, the kettle cover 2 is provided with symmetrically-positioned feeding nozzles 6, the feeding nozzles 6 are internally provided with corresponding material blocking plugs, and the buffer tank 3 is communicated with the inside of the reaction kettle 1 through an exhaust pipe 4;

the air exhaust pipe 4 is arranged in an inverted U shape, a first one-way valve 12 is arranged at one end of the air exhaust pipe 4 far away from the buffer tank 3, the first one-way valve 12 is positioned in the reaction kettle 1, in the device, through the arrangement of the first one-way valve 12, the normal feeding to the reaction kettle 1 is influenced by the backflow of the gas in the buffer tank 3 into the reaction kettle 1, the air exhaust pipe 4 is provided with a corresponding first electric control valve 5, the first electric control valve 5 is positioned outside the reaction kettle 1 and the buffer tank 3, an air exhaust pipe 7 is arranged on the buffer tank 3 in a penetrating way, the air exhaust pipe 7 is arranged in an L shape, one end of the air exhaust pipe 7 far away from a second electric control valve 10 is provided with a second one-way valve 13, the second one-way valve 13 is positioned in the buffer tank 3, the arrangement of the second one-way valve 13 is used for avoiding the external gas from entering the buffer tank 3 through the air exhaust pipe 7, and a fixing plate 8 is fixedly arranged at the lower end of the outer side wall of the buffer tank 3 far away from the reaction kettle 1, fixed plate 8 adopts the stainless steel material preparation to form, and the fixed plate 8 of stainless steel preparation support effect is good, and the fixed aspiration pump 9 that is provided with and blast pipe 7 intercommunication on the fixed plate 8 lateral wall, the one end that buffer tank 3 was kept away from to blast pipe 7 is provided with the second electric control valve 10 that matches.

The utility model discloses in, before 1 dropwise add strong sulphuric acid to reation kettle, start and open first automatically controlled valve 5 and second automatically controlled valve 10, start aspiration pump 9, aspiration pump 9 is at first vacuumed with the gas in buffer tank 3, at this moment, the pressure in buffer tank 3 is less than the gas pressure in reation kettle 1 far away, gas in reation kettle 1 gets into the follow-up via blast pipe 7 discharge under the effect of aspiration pump 9 of buffer tank 3 through exhaust tube 4 thereupon, thereby realize the evacuation in to reation kettle 1, the operation is comparatively simple and convenient, be convenient for follow-up to the raw materials of the interior interpolation preparation tetrabromophthalic anhydride of reation kettle 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. A reaction kettle vacuumizing structure for preparing tetrabromobenzoic anhydride comprises a reaction kettle (1), a kettle cover (2) and a buffer tank (3), wherein the kettle cover (2) is matched with the reaction kettle (1), and the reaction kettle (1) and the buffer tank (3) are both arranged on the ground, the reaction kettle vacuumizing structure is characterized in that feeding nozzles (6) with symmetrical positions are arranged on the kettle cover (2), corresponding material blocking plugs are arranged in the feeding nozzles (6), the buffer tank (3) is communicated with the reaction kettle (1) through an exhaust pipe (4), a corresponding first electric control valve (5) is arranged on the exhaust pipe (4), the first electric control valve (5) is positioned outside the reaction kettle (1) and the buffer tank (3), an exhaust pipe (7) is arranged on the buffer tank (3) in a penetrating manner, and a fixing plate (8) is fixedly arranged at the lower end of the buffer tank (3), which is far away from the reaction kettle (1), the side wall is fixed on fixed plate (8) and is provided with aspiration pump (9) that communicate with blast pipe (7), the one end that buffer tank (3) were kept away from in blast pipe (7) is provided with second automatically controlled valve (10) of matching.

2. The vacuum pumping structure of the reaction kettle for preparing tetrabromobenzene anhydride according to claim 1, wherein said air pumping pipe (4) is arranged in an inverted U shape, and a first check valve (12) is arranged at one end of the air pumping pipe (4) far away from the buffer tank (3), and said first check valve (12) is positioned in the reaction kettle (1).

3. A tetrabromobenzoic anhydride preparation reation kettle vacuum-pumping structure of claim 1 characterized in that, the matching pressure gauge (11) is set up on the upper end of buffer tank (3).

4. A tetrabromobenzoic anhydride preparation reation kettle evacuation structure of claim 1 characterized in that, exhaust pipe (7) sets up to L type, and the one end that exhaust pipe (7) keeps away from second electrically controlled valve (10) is provided with second check valve (13), and second check valve (13) are located buffer tank (3).

5. The vacuum pumping structure of the reaction kettle for preparing tetrabromobenzoic anhydride according to claim 1, wherein said fixing plate (8) is made of stainless steel material.

6. The vacuum pumping structure of the reaction kettle for preparing tetrabromobenzoic anhydride according to claim 1, wherein a circle of sealing gasket with uniform thickness is arranged at the joint of the kettle cover (2) and the reaction kettle (1).

7. The vacuumizing structure of a tetrabromobenzoic anhydride preparation reaction kettle according to claim 1, wherein a plurality of groups of uniform supporting legs are arranged on the lower side walls of the reaction kettle (1) and the buffer tank (3), and a layer of grid-grain silica gel pad is arranged on a fixing pad at the lower end of each supporting leg.

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