CN217490787U - Reation kettle dropwise add device - Google Patents

Abstract

The utility model relates to a reation kettle dropwise add device belongs to the chemical production equipment field. Its technical scheme does, a reation kettle dropwise add device, trunk line including vertical setting, the lower extreme of trunk line is provided with at least three small transfer line, and a plurality of small transfer lines use the trunk line to be central circumference evenly distributed in the horizontal plane, and the one end and the trunk line public connection of a plurality of small transfer lines, and the spraying dropwise add shower nozzle is installed to the below of small transfer line, and the top of trunk line is equipped with accuse pressure equipment. The beneficial effects of the utility model are that, the liquid drop of dripping is vaporific and sprays on the surface of reaction liquid, has increased the specific surface area of liquid drop, makes the contact of liquid drop and reaction liquid more abundant, avoids the local high temperature that the reaction lag caused, and the dropwise add shower nozzle of spraying simultaneously makes and has certain fluid pressure in the pipeline, thereby cooperation accuse pressure equipment controlled pressure master the volume of adding and the reaction time of material for the reaction process is steady controllable, and temperature stability improves the quality and the yield of product.

Description

Reation kettle dropwise add device

Technical Field

The utility model relates to a chemical production equipment field especially relates to a reation kettle dropwise add device.

Background

The kettle type reactor is mostly adopted in the production of the existing chemical products, the dropwise addition material is a very common reaction kettle feeding mode in the chemical industry, most of synthesis reactions are exothermic, a lot of chemical reactions need to be controlled within a certain temperature range to ensure the smooth proceeding of the production process, for example, diazotization reaction just needs to be kept at about 0 ℃, the dropwise addition speed and the stirring speed of the sodium nitrite solution need to be particularly concerned about, the local temperature is prevented from being too high, the coupling phenomenon is generated, so that a plurality of byproducts are generated, and the product quality and the yield are influenced.

In actual production, a dripping tank is generally adopted for dripping in a pipeline mode, the dripping mode easily causes uneven distribution of materials in a reaction kettle, local temperature rises suddenly, requirements on dripping speed and dripping time are strict during operation, and if improper operation exists, reaction aging is not uniform, and product quality is uneven.

Disclosure of Invention

The utility model discloses to present reation kettle dropwise add mode uncontrollable reaction temperature, influence product quality's problem, provide one kind can increase the dropwise add liquid and reaction liquid area of contact, control dropwise add speed makes the steady controllable reation kettle dropwise add device of reaction temperature.

For solving the problem, the utility model discloses a technical scheme do, a reation kettle dropwise add device, trunk line including vertical setting, the lower extreme of trunk line is provided with at least three small transfer line, and a plurality of small transfer lines use the trunk line to be central circumference evenly distributed in the horizontal plane, and the one end and the trunk line public connection of a plurality of small transfer lines, and the spraying dropwise add shower nozzle is installed to the below of small transfer line, and the top of trunk line is equipped with accuse pressure equipment. The atomizing dropwise add device makes the drop liquid drop be vaporific and sprays on the surface of reaction liquid, has increased the specific surface area of liquid drop, makes the contact of drop liquid and reaction liquid more abundant, avoids the local high temperature that the reaction lag caused, and atomizing dropwise add device makes to have certain fluid pressure in the pipeline simultaneously, thereby cooperation accuse pressure device control pressure masters the addition and the reaction time of material, makes the reaction process steady controllable, and the temperature is stable, improves the quality and the yield of product.

Preferably, the spray dripping nozzle comprises a nozzle body, the outer circular surface and/or the lower end surface of the nozzle body are/is provided with an atomization nozzle hole, the top of the nozzle body is provided with a pressure-bearing pipeline, the pressure-bearing pipeline is communicated with the atomization nozzle hole, and the diameter of the nozzle body is larger than that of the pressure-bearing pipeline. The segmented structure is arranged, so that the connection with the branch pipeline is facilitated, pressure transition is carried out, the distribution area of the atomizing spray holes is larger, and the expansion of the spraying area is facilitated.

Preferably, the diameter of the atomizing orifice is 5 to 100 microns. And the micron-sized atomization spray holes are adopted, so that liquid drops are smaller, and the reaction is more stable.

Preferably, the pressure-bearing range of the pressure-bearing pipeline is 0-20 MPa. The bearing range is large, the control is convenient, and the use is more flexible.

Preferably, four branch pipelines are arranged, and the included angle between every two adjacent branch pipelines is 90 degrees.

Preferably, at least three mounting pipes are arranged on the branch pipeline along the length direction, and the spray dripping nozzle is mounted on one or more mounting pipes; the device also comprises a plugging piece, wherein the plugging piece is arranged on an installation pipe which is not provided with the spraying and dripping nozzle. The installation position and the number of the atomizing and dripping devices can be changed, the spraying range can be adjusted, and the use is more flexible.

Preferably, the distance between two adjacent mounting pipes is set to be D, the outer diameter of the spray dripping nozzle is D, and D is larger than D. Can all install atomizing dropwise add device on two adjacent installation pipes, adjacent dropwise add device can not produce the position and interfere, furthest's realization atomizing dropwise add.

Preferably, the main and branch conduits have a fluid viscosity of 0-15 cp. The viscosity of the dropping liquid is controlled to prevent the atomizing dropping device from being blocked.

Can find out through above technical scheme, the utility model discloses an advantage does: the utility model provides a novel dropwise add device, use control more nimble and maneuverability is strong, thereby can come control pressure to control dropping liquid feeding addition and reaction time according to the reaction needs, in view of the pipeline has certain pressure range, the number of visual circumstances installation spraying dropwise add shower nozzle and the distribution and the aperture size in micron hole, make spun liquid drop be the atomizing state, the dispersion effect obviously becomes good, the specific surface area of liquid drop has been increased, make the feed liquid contact more abundant, avoid the reaction lag to cause local temperature too high, make the reaction more steady controllable, improve the quality and the yield of product.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic structural view of a spray dripping nozzle in the embodiment of the present invention.

In the figure: 1. the device comprises a main pipeline, 2 branch pipelines, 3 a nozzle main body, 3-1 atomizing spray holes, 3-2 pressure-bearing pipelines, 4 mounting pipes, 5 plugging pieces and 6 pressure control devices.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is obvious that the embodiments described below are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments in this patent without making creative efforts, shall fall within the protection scope of this patent.

A reaction kettle dripping device comprises a main pipeline 1 which is vertically arranged, wherein a pressure control device 6 is arranged at the upper end of the main pipeline 1, at least three branch pipelines 2 are arranged at the lower end of the main pipeline 1, the branch pipelines 2 are connected in a star shape in a horizontal plane, namely, one ends of the branch pipelines 2 are commonly connected to one point, the point is used as a circle center, the branch pipelines 2 are radially arranged, the other ends of the branch pipelines 2 are positioned on a circle which takes the length of the branch pipelines as a radius, the angle intervals between every two adjacent branch pipelines 2 are equal, the branch pipelines 2 are mutually communicated at the common connection point, the lower end of the main pipeline 1 is connected with the common connection point and communicated with the branch pipelines 2, the main pipeline 1 is perpendicular to a plane formed by the branch pipelines, in the embodiment, the branch pipelines 2 are four, and the angle intervals between every two adjacent branch pipelines are 90 degrees;

the branch pipelines 2 are provided with at least three mounting pipes 4 along the length direction, the pipe orifices of the mounting pipes 4 are vertically arranged downwards, the mounting pipes 4 are used for mounting spray dripping nozzles, one or more spray dripping nozzles can be mounted on each branch pipeline 2 as required, the mounting pipes 4 without the spray dripping nozzles are sealed by plugging pieces 5, the mounting pipes 4 can adopt external screw joints, and the plugging pieces 5 correspondingly adopt internal screw caps;

the spray dripping nozzle comprises a nozzle main body 3, a pressure-bearing pipeline 3-2 is arranged at the top of the nozzle main body 3, the pressure-bearing range of the pressure-bearing pipeline 3-2 is 0-20MPa, the upper end of the pressure-bearing pipeline 3-2 is in butt joint with a mounting pipe 4, an atomization spray hole 3-1 is arranged on the outer circular surface and the lower end surface of the nozzle main body 3, the atomization spray hole 3-1 is a micron-sized spray hole, the diameter range is 5-100 microns, meanwhile, the viscosity of dripping liquid in a main pipeline and a branch pipeline is not more than 15 due to the small aperture cp of the atomization spray hole 3-1, the pressure-bearing pipeline 3-2 and the atomization spray hole 3-1 are communicated in the nozzle main body 3, the outer diameter of the nozzle main body 3 is larger than the outer diameter of the pressure-bearing pipeline 3-2, so that the atomization spray hole 3-1 has a larger distribution area, and the distance between two adjacent mounting pipes 4 on the branch pipeline is arranged (including the distance between two adjacent mounting pipes on the same branch pipeline and different branch pipes The distance between any two installation pipes on the pipeline) is D, the diameter of the spray head main body is D, D > D, all the installation pipes 4 can be fully utilized, and the maximum dripping amount and the maximum spraying range are obtained.

The using method of the utility model is that the dripping device is arranged in the reaction kettle, the main pipeline 1 is connected with the dripping liquid conveying pipeline through the pressure control device 6, and the spraying dripping nozzles with proper quantity are selected according to the reaction requirement and are arranged on each branch pipeline 2; when the reaction is carried out, the dropping liquid conveying pipeline is opened, the dropping liquid enters the main pipeline 1 and is shunted to each branch pipeline, and is sprayed out in a micron-sized liquid drop mode from each spraying dropping nozzle and is uniformly sprayed on the upper liquid level of the reaction liquid in the reaction kettle, and the dropping liquid and the reaction liquid are fully mixed by matching with the stirring function of the reaction kettle, so that the reaction is more stable, and the phenomenon that the local temperature is too high or too low due to reaction lag is avoided; meanwhile, the aperture of the atomization spray hole is small, certain liquid pressure is formed in the dripping device, the pressure inside the pipeline is controlled through the pressure control device, for example, the pressure control device can adopt a flow valve, a proportional overflow valve and the like, the dripping speed can be controlled, and the reaction rate and the reaction time can be flexibly controlled.

Can see through above embodiment, the beneficial effects of the utility model reside in that, dropwise add device use control is more nimble and maneuverability is strong, thereby can come control pressure according to the reaction needs and control dropping liquid feeding addition and reaction time, there is certain pressure range in view of the pipeline, the number of visual circumstances installation spraying dropwise add shower nozzle and the distribution and the aperture size in micron hole, make the spun liquid drop be the atomizing state, the dispersion effect obviously becomes good, the specific surface area of liquid drop has been increased, make the feed liquid contact more abundant, avoid the reaction lag to cause local temperature too high, make the reaction more steady controllable, the quality and the yield of improvement product.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides a reation kettle dropwise add device, its characterized in that, trunk line (1) including vertical setting, the lower extreme of trunk line (1) is provided with at least three small transfer line (2), and is a plurality of small transfer line (2) in the horizontal plane with trunk line (1) is central circumference evenly distributed, the one end of a plurality of small transfer lines (2) with trunk line (1) public connection, spraying dropwise add shower nozzle is installed to the below of small transfer line (2), the top of trunk line (1) is equipped with accuse pressure equipment (6).

2. The dropwise adding device for the reaction kettle as recited in claim 1, wherein the spray dropwise adding nozzle comprises a nozzle body (3), the outer circular surface and/or the lower end surface of the nozzle body (3) is/are provided with an atomization nozzle hole (3-1), the top of the nozzle body (3) is provided with a pressure-bearing pipeline (3-2), and the pressure-bearing pipeline (3-2) is communicated with the atomization nozzle hole (3-1).

3. The reaction kettle dripping device according to claim 2, wherein the diameter of the atomizing nozzle (3-1) is 5-100 microns.

4. The dropwise adding device of the reaction kettle as recited in claim 2, wherein the pressure-bearing range of the pressure-bearing pipeline (3-2) is 0-20 MPa.

5. The dropwise adding device for the reaction kettle as recited in claim 1, wherein the number of the branch pipes (2) is four, and the included angle between two adjacent branch pipes (2) is 90 °.

6. The dropwise adding device of the reaction kettle as recited in any one of claims 1 to 5, wherein at least three mounting pipes (4) are arranged on the branch pipe (2) along the length direction, and the spray dropwise adding nozzle is mounted on one or more mounting pipes (4); still include shutoff piece (5), shutoff piece (5) are installed not install the spraying dropwise add shower nozzle install on pipe (4).

7. The dropwise adding device for the reaction kettle as recited in claim 6, wherein the distance between two adjacent mounting pipes (4) is set to be D, and the outer diameter of the spray dropwise adding nozzle is D, D > D.

8. A reactor dripping device according to any of claims 1-5 wherein the viscosity of the fluid in said main conduit (1) and said branch conduit (2) is 0-15 cp.

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