CN212017796U

CN212017796U - Hydrolysis device for producing hexamethyldisiloxane

Info

Publication number: CN212017796U
Application number: CN202020338166.5U
Authority: CN
Inventors: 何鸿杰
Original assignee: Ji'an Yongxiang Silicon New Material Co ltd
Current assignee: Ji'an Yongxiang Silicon New Material Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-11-27
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a hydrolysis device for producing hexamethyldisiloxane, which comprises a reaction tank, a stirrer and a feeding pipe network, wherein an annular mixing pipe is fixedly arranged in the reaction tank close to the upper end, a plurality of groups of liquid outlets which are uniformly distributed are arranged on the mixing pipe, the feeding pipe network penetrates into the reaction tank from the side wall at the top end of the reaction tank, and a discharge pipe is arranged at the bottom of the reaction tank; the feeding pipe network comprises a water inlet pipe and a plurality of groups of material pipes, each group of material pipes is communicated with the side wall of the water inlet pipe, and the tail end of the water inlet pipe is communicated with the mixing pipe; the agitator includes pivot, actuating system, encircles and fixes the stirring piece in the pivot, and the stirring piece is including the toper that is located the mixing tube below getting rid of the dish, be fixed in the terminal stirring rake of pivot, gets rid of the outer edge of dish and the retort inner wall and is equipped with the interval. The utility model discloses adopt the feeding pipe network and the annular mixing tube of preliminary mixing before retort pan feeding to be furnished with the rotatory agitator that gets rid of dish and stirring rake combination, make the raw materials quick, intensive mixing, improve the efficiency of hydrolysising.

Description

Hydrolysis device for producing hexamethyldisiloxane

Technical Field

The utility model belongs to the technical field of chemical industry equipment, concretely relates to hydrolysis unit of production hexamethyldisiloxane.

Background

Hexamethyldisiloxane (silyl ether, MM capping agent), colorless transparent liquid, deliquescent, insoluble in water but soluble in various organic solvents, used as silicone oil, silicone rubber, medicine, gas chromatography stationary liquid, analytical reagent, water repellent and the like, is prepared by hydrolyzing trimethyl chlorosilane serving as a base material after adding auxiliary materials such as N, N-dimethylaniline and the like in the synthetic production process of hexamethyldisiloxane. In the hydrolysis process, how to mix the raw materials quickly and sufficiently is a key factor influencing the hydrolysis efficiency and the quality of finished products.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects and the difficult problems in the prior art, the utility model aims at providing a hydrolysis device for producing hexamethyldisiloxane.

The utility model discloses a following technical scheme realizes:

a hydrolysis device for producing hexamethyldisiloxane comprises a reaction tank, a stirrer and a feeding pipe network, wherein an annular mixing pipe is fixedly arranged at a position close to the upper end in the reaction tank, the mixing pipe is fixed on the inner wall of the reaction tank, a plurality of groups of uniformly distributed liquid outlets are formed in the mixing pipe, the feeding pipe network penetrates into the reaction tank from the side wall of the top end of the reaction tank, and a discharge pipe is arranged at the bottom of the reaction tank; the feeding pipe network comprises a water inlet pipe and a plurality of groups of material pipes, each group of material pipes is communicated with the side wall of the water inlet pipe, the material pipes are arranged outside the reaction tank, and the tail end of the water inlet pipe is communicated with the mixing pipe; the stirrer comprises a rotating shaft inserted into the reaction tank to the bottom of the reaction tank, a matched driving system and a stirring piece fixed on the rotating shaft in a surrounding manner, the stirring piece comprises a conical throwing disc positioned below the mixing pipe and a stirring paddle fixed at the tail end of the rotating shaft, and an interval is arranged between the outer edge of the throwing disc and the inner wall of the reaction tank.

Furthermore, all the material pipes are arranged in a vertically staggered mode, and the feeding pipe network forms a dendritic pipe network.

Further, the mixing pipe is arranged obliquely, and is inclined downwards from the joint of the mixing pipe and the water inlet pipe to the opposite side of the mixing pipe.

Further, the opening of the liquid outlet is positioned obliquely below the inner surface of the mixing pipe.

Furthermore, a pump body is arranged on the water inlet pipe, is positioned in an area above the material pipe and is a booster pump or a jet pump.

Further, the flail is inclined downwards from inside to outside.

Furthermore, the surface of the throwing disk is provided with a plurality of groups of convex ribs positioned on the generatrix of the throwing disk.

Further, the height and the width of the rib are gradually reduced from inside to outside.

Compared with the prior art, the utility model discloses beneficial effect includes:

(1) the utility model discloses adopt the feeding pipe network and the annular mixing tube of preliminary mixing before retort pan feeding to be furnished with the rotatory agitator that gets rid of dish and stirring rake combination, make the raw materials quick, intensive mixing, improve the efficiency of hydrolysising.

(2) The utility model discloses materials such as water, trimethylchlorosilane, N-dimethylaniline pass through the preliminary mixing entering mixing tube of charging tube net in proper order, flow the in-process at its inside and mix the back again and get into inside retort 1 from the liquid outlet, improved mixing efficiency.

(3) The utility model discloses utilize the hybrid tube and get rid of the interval between the dish, the liquid that will flow from the hybrid tube falls on getting rid of the dish, rotates along with the pivot and drives and get rid of the dish rotation, and the liquid that will fall into on it gets rid of and flows downwards along its and the retort inner wall between the clearance, under liquid and getting rid of the dish striking and rotatory throwing action, realizes the homogeneous mixing to the stirring rake that combines the bottom carries out the degree of depth and mixes.

Drawings

Fig. 1 is a front view of the inside of the present invention.

Fig. 2 is a top view of the interior of the reaction tank of the present invention.

Fig. 3 is a longitudinal sectional view of the mixing tube of the present invention.

Illustration of the drawings: 1-a reaction tank, 2-a stirrer, 201-a rotating shaft, 202-a throwing disc, 203-a stirring paddle, 204-a driving system, 205-a rib, 3-a feeding pipe network, 301-a pump body, 302-a water inlet pipe, 303-a material pipe, 4-a mixing pipe, 401-a liquid outlet and 5-a discharge pipe.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, integrally connected; can be mechanical connection and electrical connection; may be directly connected, indirectly connected through intervening agents, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood to be specific to those skilled in the art.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 3, a hydrolysis device for producing hexamethyldisiloxane comprises a reaction tank 1, a stirrer 2 and a feeding pipe network 3, wherein an annular mixing pipe 4 is fixedly installed in the reaction tank 1 near the upper end, the mixing pipe 4 is fixed on the inner wall of the reaction tank 1 by welding, fasteners and other structures, a discharge pipe 5 for discharging a hydrolyzed product is installed at the bottom of the reaction tank 1, a plurality of groups of uniformly distributed liquid outlets 401 are formed in the mixing pipe 4, the feeding pipe network 3 penetrates into the reaction tank 1 from the side wall of the top end of the reaction tank, the feeding pipe network 3 comprises a water inlet pipe 302 and a plurality of groups of material pipes 303, each group of material pipes 303 is communicated with the side wall of the water inlet pipe 302, so that the feeding pipe network 3 forms a dendritic pipe network, the material pipes 303 are arranged outside the reaction tank 1, the tail end of the water inlet pipe 302 is communicated with the mixing pipe 4, the water inlet pipe 302 is used for inputting water, N, N-dimethylaniline and other raw materials enter, and different material pipes 303 are arranged in a vertically staggered manner, so that blockage can be avoided. The water inlet pipe 302 and the material pipe 303 are respectively connected with the corresponding storage containers. In the concrete implementation, water, trimethylchlorosilane, N-dimethylaniline and the like are sequentially mixed primarily through a feeding pipe network 3 and enter a mixing pipe 4, are mixed again in the flowing process, enter the reaction tank 1 from a liquid outlet 401, and are deeply mixed under the action of a stirrer 2.

To facilitate the flow of liquid in the mixing tube 4 and to avoid backflow, the mixing tube 4 is inclined, sloping downwards from its junction with the inlet tube 302 to its opposite facing surface.

The opening of the liquid outlet 401 is located at the oblique lower side of the inward surface of the mixing tube 4, so that the liquid raw material is injected obliquely downward when entering the reaction tank 1, and is prevented from being injected into the opposite liquid outlet 401.

In order to increase the speed of the liquid raw material entering the reaction tank 1 and further avoid pipeline blockage, a pump body 301 is installed on the water inlet pipe 302, the pump body 301 is located in the area above the material pipe 303, the pump body 301 is used for increasing the speed of liquid output, and the pump body 301 is a booster pump or a jet pump.

The stirrer 2 comprises a rotating shaft 201 inserted into the reaction tank 1 to the bottom thereof, a driving system 204 driving the rotating shaft 201 to rotate and correspondingly matched with the rotating shaft, and a stirring piece fixed on the rotating shaft 201 in a surrounding manner, wherein the stirring piece comprises a conical flail disc 202 positioned below the mixing tube 4 and a stirring paddle 203 fixed at the tail end of the rotating shaft 201, a certain distance is reserved between the outer edge of the flail disc 202 and the inner wall of the reaction tank 1, in the specific implementation, a small distance is reserved between the mixing tube 4 and the flail disc 202, liquid flowing out of the mixing tube 4 falls on the flail disc 202, the flail disc 202 is driven to rotate along with the rotation of the rotating shaft 201, the flail disc 202 inclines downwards from inside to outside, the liquid falling on the flail disc is flaked out and flows downwards along a gap between the flail disc and the inner wall of the reaction tank 1 under the rotation of the flail disc.

In order to improve mixing efficiency, hydrolysis quality, the surface of throwing away dish 202 sets up the bead 205 that a plurality of groups are located its generating line, and its height, width all reduce gradually from inside to outside bead 205 for the sharpness of bead 205 is bigger, and then makes the dynamics of striking bigger to liquid raw materials, improves mixing efficiency more easily.

In the concrete implementation, the inside device, catalyst that still install control temperature such as heating and thermometers of retort 1 add pipeline, viewing aperture for control and observation hydrolysis reaction process, its structure adopts conventional design, the utility model discloses do not explain in detail.

In specific implementation, the driving system 204 includes a power motor, a coupling, a bearing assembly, etc. and the structure, connection and composition thereof adopt conventional design, the utility model discloses do not explain in detail.

The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a hydrolysis unit of production hexamethyldisiloxane, includes retort, agitator, feeding pipe network, its characterized in that: an annular mixing pipe is fixedly arranged in the reaction tank at a position close to the upper end of the reaction tank, the mixing pipe is fixed on the inner wall of the reaction tank, a plurality of groups of uniformly distributed liquid outlets are formed in the mixing pipe, the feeding pipe network penetrates into the reaction tank from the side wall of the top end of the reaction tank, and a discharge pipe is arranged at the bottom of the reaction tank; the feeding pipe network comprises a water inlet pipe and a plurality of groups of material pipes, each group of material pipes is communicated with the side wall of the water inlet pipe, the material pipes are arranged outside the reaction tank, and the tail end of the water inlet pipe is communicated with the mixing pipe; the stirrer comprises a rotating shaft inserted into the reaction tank until the bottom of the reaction tank, a matched driving system and a stirring piece fixed on the rotating shaft in a surrounding mode, the stirring piece comprises a conical throwing disc positioned below the mixing pipe and a stirring paddle fixed at the tail end of the rotating shaft, and an interval is arranged between the outer edge of the throwing disc and the inner wall of the reaction tank.

2. The hydrolysis apparatus for producing hexamethyldisiloxane, according to claim 1, wherein: each group of material pipes are arranged in a vertically staggered mode, and the feeding pipe network forms a dendritic pipe network.

3. The hydrolysis apparatus for producing hexamethyldisiloxane, according to claim 1, wherein: the mixing pipe is arranged obliquely and inclines downwards from the joint of the mixing pipe and the water inlet pipe to the opposite side of the mixing pipe.

4. The hydrolysis apparatus for producing hexamethyldisiloxane, according to claim 1, wherein: the opening of the liquid outlet is positioned at the inclined lower part of the inward surface of the mixing pipe.

5. The hydrolysis apparatus for producing hexamethyldisiloxane, according to claim 1, wherein: the water inlet pipe is provided with a pump body, the pump body is positioned in the area above the material pipe, and the pump body is a booster pump or a jet pump.

6. The hydrolysis apparatus for producing hexamethyldisiloxane, according to any one of claims 1 to 5, wherein: the throwing disc inclines downwards from inside to outside.

7. The hydrolysis apparatus for producing hexamethyldisiloxane, according to claim 6, wherein: the surface of the throwing disc is provided with a plurality of groups of convex ribs positioned on the generatrix.

8. The hydrolysis apparatus for producing hexamethyldisiloxane, according to claim 7, wherein: the height and the width of the convex rib are gradually reduced from inside to outside.