CN218654384U

CN218654384U - Multi-section reactor for thermosensitive materials

Info

Publication number: CN218654384U
Application number: CN202223257257.4U
Authority: CN
Inventors: 张建辉; 陈宝良
Original assignee: Lianhua Xinrui Beijing Technology Co ltd
Current assignee: Lianhua Xinrui Beijing Technology Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-03-21
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a multi-section reactor for heat-sensitive materials, which adopts multi-section flange connection and comprises a cylinder straight pipe section, a cylinder catalyst bed section, a cylinder heat exchange tube array section, a reactor head, a connecting flange, a feeding distributor, a water outlet control valve, a water inlet pipe and a water outlet pipe; barrel straight tube section, carry out detachable through flange between barrel catalyst bed section and the barrel heat transfer row pipeline section and connect, form the barrel of multistage formula reactor, can be according to the exothermic nature adjustment reactor structure of different heat-sensitive material, can carry out the mutual replacement according to the production demand, change the position of adjusting different barrels, the application is rational in infrastructure, through the control to the reactor, the effectual solution can lead to taking place the problem of autoagglutination because of the exothermic meeting of heat-sensitive material reaction, and effectual improvement conversion, thereby realize the continuous stable efficient production demand of apparatus for producing.

Description

Multi-section reactor for thermosensitive materials

Technical Field

The utility model belongs to the technical field of the chemical industry reaction technique and specifically relates to a multistage formula reactor for heat sensitive material.

Background

The heat-sensitive material is unstable when heated, and the product can be caused to generate chemical change or physical change to influence the product quality. The thermosensitive material is characterized by being sensitive to temperature, showing different properties at different temperatures, and being classified whether the material is thermosensitive or not and whether the material properties are changed or not at different temperatures, wherein the materials mainly comprise hydrocarbons and the like.

In the chemical production process, aiming at heat-sensitive substances, the temperature must be controlled within the range required by the process rules, otherwise, the deterioration reactions such as decomposition, polymerization, oxidation and the like are easy to occur, even the danger of explosion is caused to cause serious loss, and the heat-sensitive substances are avoided to the utmost extent in the industrial production.

SUMMERY OF THE UTILITY MODEL

In order to overcome the risk problem of heat sensitive material production among the prior art, the utility model provides a multistage formula reactor for heat sensitive material can effectual solution lead to the temperature variation because of the heat release of reaction because of the heat sensitive material to arouse the unqualified problem of product.

In order to achieve the above object, the utility model provides a concrete following scheme:

a multi-section reactor for thermosensitive materials is connected by adopting multi-section flanges and comprises a cylinder straight pipe section, a cylinder catalyst bed section, a cylinder heat exchange column pipe section, a reactor end socket, a connecting flange, a feeding distributor, a water outlet control valve, a water inlet pipe and a water outlet pipe; the reactor head is connected with the feeding distributor through the connecting flange, the feeding distributor is connected with the top of the cylinder of the reactor through the connecting flange, the cylinder catalyst bed layer section and the cylinder heat exchange tube section are arranged at intervals, and the cylinder catalyst bed layer section and the cylinder heat exchange tube section are separated by the cylinder straight tube section; each section of the barrel heat exchange tube array section is connected with a water inlet pipe and a water outlet pipe to form a cooling water pipeline, and a water outlet control valve is installed at the water outlet pipe.

In the technical scheme, the multi-section reactor is provided with 2-6 sections of cylinder catalyst bed layer sections, 2-6 sections of cylinder heat exchange tube array sections and 100-500 mm of cylinder straight tube sections.

As the preferable scheme of the technical scheme, the feeding distributor adopts a porous calandria type, and the form of the distributor is a shower head type, a pagoda type, a porous calandria type, a porous coil pipe type, an overflow disc type or an overflow groove type.

As a preferred scheme of the technical scheme, each section of the cylindrical catalyst bed layer is provided with a thermocouple thermometer for accurately measuring the material reaction temperature in the section, supporting baffles are arranged up and down for fixing the catalyst in bulk in the catalyst bed layer, and round holes are uniformly formed in the baffles for preventing liquid from impacting a catalyst bed layer and preventing the catalyst from scattering.

As the preferable scheme of the technical scheme, the outer sides of the heat exchange tube array sections of the cylinder body are provided with the arched baffles, and the opening rate of the baffles is not limited to 20-50%.

In the technical scheme, the lengths of each section of the cylinder catalyst bed section and each section of the cylinder heat exchange column pipe section are the same, the positions of the cylinder catalyst bed section and each section of the cylinder heat exchange column pipe section can be adjusted and installed mutually according to production requirements, and the cylinder catalyst bed section and each section of the cylinder heat exchange column pipe section can be replaced by cylinder straight pipe sections with equal lengths.

The utility model relates to a multistage formula reactor for heat sensitivity material can be according to the exothermal nature adjustment reactor structure of different heat sensitivity materials, and catalyst bed layer section, heat transfer column pipeline section and straight tube section can design the pipeline section that the length equals, can carry out mutual replacement, change adjustment position according to the production demand, and the useful part of this application lies in: this application is rational in infrastructure, through the control to the reactor, effectual solution because of the exothermic problem that can lead to taking place the auto-agglutination that can lead to of heat sensitivity material reaction, effectual improvement conversion moreover to realize the continuous stable efficient production demand of apparatus for producing.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic diagram of a thermal sensitive material reactor and its control according to an embodiment of the multi-stage reactor for thermal sensitive material of the present invention;

fig. 2 is a schematic structural view of a feeding distributor of an embodiment of the multistage reactor for heat-sensitive materials according to the present invention;

fig. 3 is a bottom view of a feed distributor of an embodiment of a multi-stage reactor for heat sensitive materials of the present invention;

fig. 4 is a schematic view of a catalyst bed support plate of an embodiment of the multi-stage reactor for heat sensitive materials of the present invention.

In the figure: 1. a cylinder straight pipe section; 2. sealing the reactor; 3. a connecting flange; 4. a cylindrical catalyst bed section; 5. a cylinder heat exchange tube array section; 6. a thermocouple thermometer; 7. a feeding distributor 8 and a water outlet control valve; 9. a water inlet pipe; 10. and (5) discharging a water pipe.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "coupled" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

[ example 1 ]

Referring to fig. 1-4, the multi-stage reactor for thermosensitive materials, which is connected by multi-stage flanges, includes a cylindrical straight tube section 1, a reactor head 2, a connecting flange 3, a cylindrical catalyst bed section 4, a cylindrical heat exchange tube array section 5, a thermocouple thermometer 6, a feeding distributor 7, a water outlet control valve 8, a water inlet pipe 9, and a water outlet pipe 10.

The multi-section reactor for the thermosensitive material in the embodiment can be suitable for chemical production, and the method for generating 3-hydroxypropionaldehyde by acrolein hydration reaction of the liquid-phase material in the embodiment is introduced below, and the production requirement can be met by adopting two sections of cylinder catalyst bed sections and two sections of cylinder heat exchange tube sections.

In this embodiment, the feeding distributor 7 is a porous calandria type, and is formed by connecting a horizontal pipe with a plurality of longitudinal pipes, uniformly distributing holes below the longitudinal pipes, and arranging detachable connecting flanges 3 above the horizontal pipes.

In the embodiment, each section of the cylindrical catalyst bed layer section 4 is provided with a thermocouple thermometer 6, the upper part and the lower part of each section of the cylindrical catalyst bed layer section are provided with supporting baffles, and round holes are uniformly formed in the baffles.

In this embodiment, each section of the barrel heat exchange tube array section 5 is provided with a cooling water pipeline, which is a water inlet pipe 9 and a water outlet pipe 10, and the water outlet pipe 10 is provided with a water outlet control valve 8. The outer side of the cylinder heat exchange tube array section 5 is provided with an arched baffle, and the opening rate of the baffle is 25%.

In the embodiment, the cooling water of each section of the cylinder heat exchange tube array section 5 is cooled by circulating water at the temperature of 30 ℃.

In the embodiment, the feeding concentration of the feeding liquid phase material 3-hydroxypropionaldehyde is 15-30%, and the reaction temperature of each section of the cylindrical catalyst bed section 4 is controlled at 60 ℃.

In this embodiment, the lengths of the cylindrical catalyst bed section 4 and the cylindrical heat exchange tube array section 5 are both 1000mm, and the length of the cylindrical straight tube section 1 is 500mm.

When in use, the control mode is as follows:

acrolein and water enter the cylinder straight pipe section 1 from the reactor end enclosure 2, liquid phase materials are uniformly distributed by the feeding distributor 7 and then pass through the first cylinder catalyst bed layer section 4, supporting baffles are arranged above and below the cylinder catalyst bed layer section 4 and used for fixing catalysts in bulk in the catalyst bed layer section, and the supporting baffles are designed by uniformly arranging round holes. The thermocouple thermometer 6 is installed on the cylinder catalyst bed section 4, and the temperature of the cylinder catalyst bed section 4 is controlled at 50 ℃.

The material reacted by the catalyst bed layer section enters a small section of cylinder straight pipe section 1 for buffering and then enters a first cylinder heat exchange column pipe section 5, the cylinder heat exchange column pipe section 5 is generally cooled by cooling water, a low-in and high-out mode is adopted, the material passes through the tube side of the column pipe, and the cooling water passes through the shell side of the column pipe. The water inlet pipe 9 enters from the lower part of the cylinder heat exchange tube array section 5, an arch-shaped baffle is arranged on the shell side of the tube array, and cooling water spirally rises due to the baffle and flows out from the upper part of the heat exchange tube array section. The cooling water outlet pipe 10 is provided with a water outlet control valve 8, the water outlet control valve 8 controls the flow of cooling water, the opening degree is accurately controlled by a thermocouple thermometer 6 arranged on the cylindrical catalyst bed section 4, and the temperature fluctuation of the whole reactor can be controlled within +/-1 ℃.

The operation of the second cylinder catalyst bed section 4 and the second cylinder heat exchange train section 5 is the same as the above steps are repeated.

This application is rational in infrastructure, through the control to the reactor that acrolein hydration reaction generated 3-hydroxypropionaldehyde, effectual solved because of acrolein hydration reaction exothermic can lead to acrolein to take place the problem of autopolymerization, moreover effectual improvement 3-hydroxypropionaldehyde conversion rate to realize the continuous stable efficient production demand of apparatus for producing.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-section reactor for thermosensitive materials is characterized in that the reactor is connected by adopting a multi-section flange and comprises a cylinder straight pipe section, a cylinder catalyst bed section, a cylinder heat exchange tube array section, a reactor end socket, a connecting flange, a feeding distributor, a water outlet control valve, a water inlet pipe and a water outlet pipe; the reactor head is connected with the feeding distributor through the connecting flange, the feeding distributor is connected with the top of the cylinder of the reactor through the connecting flange, the cylinder catalyst bed layer section and the cylinder heat exchange tube section are arranged at intervals, and the cylinder catalyst bed layer section and the cylinder heat exchange tube section are separated by the cylinder straight tube section; each section of the barrel heat exchange tube array section is connected with a water inlet pipe and a water outlet pipe to form a cooling water pipeline, and a water outlet control valve is installed at the water outlet pipe.

2. The multi-stage reactor for heat-sensitive materials according to claim 1, wherein the multi-stage reactor has 2 to 6 sections of the catalyst bed layer section of the cylinder, 2 to 6 sections of the heat exchange tube array section of the cylinder, and 100 to 500mm of the straight tube section of the cylinder.

3. The multistage reactor according to claim 1, wherein the feed distributor is in the form of a showerhead, a pagoda, a perforated calandria, a perforated coil, an overflow disk or an overflow trough.

4. The multi-stage reactor for thermal sensitive materials according to claim 1, wherein each stage of the cylindrical catalyst bed section is provided with a thermocouple thermometer for accurately measuring the reaction temperature of the materials in the stage, and the upper and lower parts of the cylindrical catalyst bed section are provided with support baffles for fixing the catalysts in the catalyst bed section in bulk, and the baffles are uniformly provided with round holes for preventing liquid from impacting the catalyst bed and preventing the catalysts from scattering.

5. The multistage reactor for thermosensitive materials according to claim 1, wherein the heat exchange tube sections of the barrel are provided with bow-shaped baffles, and the opening ratio of the baffles is not limited to 20-50%.

6. The multi-stage reactor for thermosensitive materials according to claim 1, wherein the lengths of each of the catalyst bed section and the heat exchange column section of the cylindrical shell are the same, and the catalyst bed section and the heat exchange column section of the cylindrical shell can be installed by adjusting the positions of the catalyst bed section and the heat exchange column section of the cylindrical shell according to production requirements, and can also be replaced by straight pipe sections of the cylindrical shell with equal lengths.