CN210206861U - Loop reactor for decomposing cyclohexyl hydrogen peroxide - Google Patents

Abstract

The utility model provides a decompose cyclohexyl hydrogen peroxide's circulation flow reactor, which comprises a reaction tank body, the inner chamber upper portion of the reaction tank body is equipped with a opening water conservancy diversion annular down, an opening overflow annular up, the overflow annular is located the top of water conservancy diversion annular, an alkali lye feed inlet sets up the lateral wall upper portion at the reaction tank body, with the inner chamber intercommunication of water conservancy diversion annular, an oxidation liquid feed inlet sets up the lateral wall lower part at the reaction tank body, an alkali lye discharge gate sets up the bottom at the reaction tank body, and through the valve control switching, a decomposition liquid discharge gate sets up the lateral wall upper portion at the reaction tank body, with the inner chamber intercommunication of overflow annular, the top of the reaction tank body sets up power unit, the vertical inner chamber that extends into the reaction tank body down of output shaft. The utility model discloses simple structure, running cost are low, can effectively decompose cyclohexyl hydrogen peroxide and be cyclohexanol and cyclohexanone to separation decomposition product and organic material.

Description

Loop reactor for decomposing cyclohexyl hydrogen peroxide

Technical Field

The utility model relates to the field of chemical industry, in particular to a loop reactor for decomposing cyclohexyl hydrogen peroxide.

Background

Cyclohexyl hydroperoxide is an important process for the production of cyclohexanol and cyclohexanone. Excessive liquid cyclohexane reacts with oxygen in the air under the condition of no catalyst to generate cyclohexyl hydroperoxide, the decomposition speed of the cyclohexyl hydroperoxide is accelerated under the condition of alkalinity or higher temperature and under the action of a cobalt salt catalyst, and the reaction is carried out towards the direction of generating cyclohexanone and cyclohexanol.

The reactor commonly used at present is that a filler is arranged in the reactor, an alkali and cobalt salt catalyst is added into cyclohexyl hydroperoxide, the cyclohexyl hydroperoxide is fed from the bottom of the reactor and overflows from the top of the reactor, and the cyclohexyl hydroperoxide is decomposed into cyclohexanol and cyclohexanone in the rising process. However, since the decomposition time is short and the decomposition efficiency of the cyclohexyl hydroperoxide is low, a plurality of reactors connected in series are required for multi-stage decomposition, so that the number of reactors is large, and the use and maintenance costs of the cyclohexyl hydroperoxide reactor are high.

Therefore, how to design a reactor to decompose cyclohexyl hydroperoxide into cyclohexanol and cyclohexanone with high efficiency is a problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims at the not enough of prior art, provide a decompose cyclohexyl hydrogen peroxide's circulation flow reactor, its simple structure, running cost are low, can effectively decompose cyclohexyl hydrogen peroxide and be cyclohexanol and cyclohexanone to separate decomposition product and organic material.

The technical scheme of the utility model is that: a loop reactor for decomposing cyclohexyl hydroperoxide comprises a reaction tank body, wherein the upper part of an inner cavity of the reaction tank body is provided with a flow guide ring groove with a downward opening, and an overflow ring groove with an upward opening, the overflow ring groove is positioned above the flow guide ring groove, an alkali liquor feeding hole is arranged at the upper part of the side wall of the reaction tank body, is communicated with the inner cavity of the diversion ring groove, an oxidation liquid feeding hole is arranged at the lower part of the side wall of the reaction tank body, is communicated with the inner cavity of the reaction tank body, a waste lye discharge hole is arranged at the bottom of the reaction tank body and is communicated with the inner cavity of the reaction tank body, and is controlled to open and close by a valve, a decomposition liquid discharge port is arranged at the upper part of the side wall of the reaction tank body and is communicated with the inner cavity of the overflow ring groove, the top of the reaction tank body is provided with a power mechanism, the output shaft of the power mechanism vertically extends downwards into the inner cavity of the reaction tank body, and stirring blades are fixedly arranged in the circumferential direction.

The decomposition liquid discharge port is positioned above the bottom of the overflow ring groove.

The inner cavity of the reaction tank body is internally provided with an annular check ring, the periphery of the annular check ring is spaced from the inner wall of the reaction tank body to form an annular space, an annular partition plate is arranged between the annular check ring and the inner wall of the reaction tank body, the inner circumferential surface of the annular partition plate is fixedly connected with the periphery of the annular check ring, the outer circumferential surface of the annular partition plate is fixedly connected with the inner wall of the reaction tank body, so that the annular space above the annular partition plate forms an overflow annular groove, and the annular space below the annular partition plate forms a diversion annular groove.

The power mechanism is a motor.

The top of the reaction tank body is provided with an exhaust port which is communicated with the inner cavity of the reaction tank body and is controlled to be opened and closed by a valve.

Adopt above-mentioned technical scheme to have following beneficial effect:

1. the loop reactor for decomposing the cyclohexyl hydrogen peroxide comprises a reaction tank body, wherein a flow guide ring groove with a downward opening and an overflow ring groove with an upward opening are arranged at the upper part of an inner cavity of the reaction tank body, and the overflow ring groove is positioned above the flow guide ring groove. An alkali liquor feed inlet sets up on the lateral wall upper portion of retort body, communicates with the inner chamber of water conservancy diversion annular, and the alkali liquor that gets into the retort body from the alkali liquor feed inlet moves towards the lower part of the retort body under the guide effect of water conservancy diversion annular. The oxidizing liquid feeding port is arranged at the lower part of the side wall of the reaction tank body and is communicated with the inner cavity of the reaction tank body, and the cyclohexyl hydroperoxide and the organic material with the cyclohexanol and the cyclohexanone enter the lower part of the reaction tank body from the oxidizing liquid feeding port and are mixed with the alkali liquor. And a waste alkali liquor discharge port is arranged at the bottom of the reaction tank body, is communicated with the inner cavity of the reaction tank body and is controlled to be opened and closed through a valve for discharging waste alkali liquor for recycling. A decomposition liquid discharge gate sets up on the lateral wall upper portion of retort body, with the inner chamber intercommunication of overflow annular, this decomposition liquid discharge gate is used for discharging organic material, including the cyclohexanol and the cyclohexanone that the decomposition obtained. The top of the reaction tank body is provided with a power mechanism, an output shaft of the power mechanism vertically extends downwards into an inner cavity of the reaction tank body, and stirring blades are fixedly arranged in the circumferential direction. The alkali liquor entering the reaction tank body is guided by the guide ring groove, is fully and uniformly mixed with the cyclohexyl hydrogen peroxide entering the reaction tank body at the lower part of the reaction tank body, and under the action of a cobalt salt catalyst, the cyclohexyl hydrogen peroxide is fully decomposed into cyclohexanol and cyclohexanone, the generated cyclohexanol, cyclohexanone and organic materials are layered with the alkali liquor and are positioned at the upper layer of a solution system, the waste alkali liquor is positioned at the lower layer of the solution system, the cyclohexanol, cyclohexanone and organic materials positioned at the upper layer of the solution system overflow into the overflow ring groove and are discharged through a decomposition liquor discharge port, high-purity cyclohexanol and cyclohexanone are obtained after continuous processing of a downstream process, and the waste alkali liquor positioned at the lower layer of the solution system is discharged through a waste alkali liquor discharge port for recycling. Therefore, the decomposition efficiency of the cyclohexyl hydroperoxide is effectively improved, the decomposition product, the organic material and the waste alkali liquor are separated and recovered, the energy is saved, the consumption is reduced, and the cost for producing the cyclohexanol and the cyclohexanone is reduced.

2. The decomposition liquid discharge port is positioned above the bottom of the overflow ring groove, the cyclohexanol, cyclohexanone and organic materials overflowing into the overflow ring groove carry a small amount of water, and the cyclohexanol, cyclohexanone and organic materials are layered again in the overflow ring groove to be subjected to secondary separation, so that the purity of the cyclohexanol, cyclohexanone and organic materials discharged out of the reaction tank body is further improved.

3. An annular check ring is arranged in an inner cavity of the reaction tank body, a spacing distance is reserved between the periphery of the annular check ring and the inner wall of the reaction tank body to form an annular space, an annular partition plate is arranged between the annular check ring and the inner wall of the reaction tank body, the inner circumferential surface of the annular partition plate is fixedly connected with the periphery of the annular check ring, the outer circumferential surface of the annular partition plate is fixedly connected with the inner wall of the reaction tank body, so that the annular space above the annular partition plate forms an overflow ring groove, the annular space below the annular partition plate forms a flow guide ring groove, no spacing space is reserved between the flow guide ring groove and the bottom of the overflow ring groove, a solution system is prevented from remaining between the flow guide ring groove and the overflow ring groove, the.

4. The top of the reaction tank body is provided with an exhaust port which is communicated with the inner cavity of the reaction tank body and is controlled to be opened and closed by a valve, so that the gas in the reaction tank body is exhausted, and the safety production requirement is met.

The following further description is made with reference to the accompanying drawings and detailed description.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the attached drawing, 1 is the retort body, 2 is the water conservancy diversion annular, 3 is the overflow annular, 4 is the alkali lye feed inlet, 5 is the oxidizing solution feed inlet, 6 is the waste lye discharge gate, 7 is the decomposition liquid discharge gate, 8 is power unit, 9 is stirring vane, 10 is annular retaining ring, 11 is annular baffle, 12 is the gas vent.

Detailed Description

The utility model discloses in, do not mark the equipment of concrete connection mode, go on according to conventional condition or according to the condition of firm suggestion usually, do not mark the equipment of specific model, be the conventional equipment in chemical industry field usually.

Referring to fig. 1, there is shown an embodiment of a loop reactor for decomposing cyclohexylhydroperoxide. The loop reactor for decomposing cyclohexyl hydroperoxide comprises a reaction tank body 1, wherein a mounting bracket is required to be arranged on the reaction tank body, and the reaction tank body is supported on the ground and has a certain height with the ground. Inner chamber upper portion of the retort body 1 is equipped with a opening water conservancy diversion annular 2 down to and an opening overflow annular 3 up, overflow annular 3 is located water conservancy diversion annular 2's top, in this embodiment, be equipped with an annular retaining ring 10 in the inner chamber of the retort body 1, the interval distance has between the periphery of this annular retaining ring 10 and the inner wall of the retort body 1, form annular space, an annular partition plate 11 sets up between annular retaining ring 10 and the retort body 1 inner wall, the inner circumferential face of this annular partition plate 11 is fixed continuous with the periphery of annular retaining ring 10, the outer periphery of this annular partition plate 11 is fixed continuous with the inner wall of the retort body 1, the annular space that makes annular partition plate 11 top forms overflow annular 3, the annular space below annular partition plate 11 forms water conservancy diversion annular 2. An alkali liquor feed inlet 4 is arranged on the upper part of the side wall of the reaction tank body 1 and is communicated with the inner cavity of the flow guide ring groove 2. The oxidation liquid feed inlet 5 is arranged at the lower part of the side wall of the reaction tank body 1 and is communicated with the inner cavity of the reaction tank body 1. A waste lye discharge port 6 is arranged at the bottom of the reaction tank body 1, is communicated with the inner cavity of the reaction tank body 1 and is controlled to be opened and closed by a valve. A decomposition liquid discharge port 7 is arranged on the upper part of the side wall of the reaction tank body 1 and communicated with the inner cavity of the overflow ring groove 3, and the decomposition liquid discharge port is positioned above the bottom of the overflow ring groove. The top of the reaction tank body 1 is provided with an exhaust port 12 which is communicated with the inner cavity of the reaction tank body 1 and is controlled to be opened and closed by a valve. The top of the reaction tank body 1 is provided with a power mechanism 8, specifically, the power device selects a motor, an output shaft of the motor vertically extends downwards into an inner cavity of the reaction tank body 1, the stirring blades 9 are fixedly arranged in the circumferential direction and adopt conventional stirring blades in the chemical field to be connected in a conventional installation mode.

The utility model discloses an operating principle does, opens the motor, drives stirring vane and rotates. The alkali liquor, carrying part of cobalt salt catalyst, enters the diversion ring groove from the alkali liquor feed inlet of the reaction tank body, and is guided by the diversion ring groove to flow to the lower part of the reaction tank body. Cyclohexyl hydrogen peroxide and an organic material carrying cyclohexanol and cyclohexanone enter the lower part of a reaction tank body from an oxidation liquid feed inlet of the reaction tank body and are fully and uniformly mixed with alkali liquor and part of cobalt salt catalyst, the cyclohexyl hydrogen peroxide is fully decomposed into cyclohexanol and cyclohexanone under the catalysis of the cobalt salt catalyst in an alkaline environment, the generated cyclohexanol, cyclohexanone and organic material are layered with the alkali liquor and are positioned on the upper layer of a solution system, and waste alkali liquor is positioned on the lower layer of the solution system. And the cyclohexanol, cyclohexanone and organic materials on the upper layer of the solution system overflow into the overflow ring groove, are discharged through a decomposed liquid discharge port, and are continuously processed by a downstream procedure to obtain the high-purity cyclohexanol and cyclohexanone. And discharging the waste alkali liquor positioned at the lower layer of the solution system through a waste alkali liquor discharge port for recycling.

Claims (5)

1. A loop reactor for decomposing cyclohexylhydroperoxide, characterized by: comprises a reaction tank body (1),

the upper part of the inner cavity of the reaction tank body (1) is provided with a flow guide ring groove (2) with a downward opening and an overflow ring groove (3) with an upward opening, the overflow ring groove (3) is positioned above the flow guide ring groove (2),

an alkali liquor feed port (4) is arranged at the upper part of the side wall of the reaction tank body (1) and is communicated with the inner cavity of the flow guide ring groove (2),

the oxidation liquid feeding port (5) is arranged at the lower part of the side wall of the reaction tank body (1) and is communicated with the inner cavity of the reaction tank body (1),

a waste alkali liquor discharge port (6) is arranged at the bottom of the reaction tank body (1), is communicated with the inner cavity of the reaction tank body (1) and is controlled to be opened and closed by a valve,

a decomposition liquid discharge port (7) is arranged at the upper part of the side wall of the reaction tank body (1) and is communicated with the inner cavity of the overflow ring groove (3),

the top of the reaction tank body (1) is provided with a power mechanism (8), an output shaft of the power mechanism (8) vertically extends downwards into an inner cavity of the reaction tank body (1), and stirring blades (9) are fixedly arranged in the circumferential direction.

2. Loop reactor for decomposing cyclohexyl hydroperoxide according to claim 1, characterized in that: the decomposition liquid discharge port (7) is positioned above the bottom of the overflow ring groove (3).

3. Loop reactor for decomposing cyclohexyl hydroperoxide according to claim 1, characterized in that: be equipped with an annular retaining ring (10) in the inner chamber of the retort body (1), the interval distance has between the periphery of this annular retaining ring (10) and the inner wall of the retort body (1), form annular space, an annular baffle (11) sets up between annular retaining ring (10) and retort body (1) inner wall, the inner circumference of this annular baffle (11) is fixed continuous with the periphery of annular retaining ring (10), the outer periphery of this annular baffle (11) is fixed continuous with the inner wall of the retort body (1), the annular space that makes annular baffle (11) top forms overflow annular (3), the annular space of annular baffle (11) below forms water conservancy diversion annular (2).

4. Loop reactor for decomposing cyclohexyl hydroperoxide according to claim 1, characterized in that: the power mechanism (8) is a motor.

5. Loop reactor for decomposing cyclohexyl hydroperoxide according to claim 1, characterized in that:

the top of the reaction tank body (1) is provided with an exhaust port (12) which is communicated with the inner cavity of the reaction tank body (1), and

the valve is used for controlling the opening and the closing.

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