Novel adipic acid crystallizer with flushing system

Abstract

The utility model relates to the technical field of adipic acid crystallizers, in particular to a novel adipic acid crystallizer equipped with a flushing system, which comprises a crystallizer body and a plurality of flushing devices, a plurality of cavities are arranged in the crystallizer body, the flushing devices are respectively distributed in the cavities, each flushing device comprises an annular pipe and a plurality of nozzles, and the nozzles are communicated with the annular pipe. The annular pipe is horizontally installed on the side wall of the upper portion of the cavity through the supporting plate, and the spray heads are arranged around the outer side of the annular pipe. The annular pipe and the spray head are arranged in each cavity of the crystallizer, so that the inner wall of each cavity can be effectively and quickly spray-washed, the problem of scaling of the inner wall of the crystallizer is effectively solved, the influence on the operation cycle of the crystallizer is avoided, and the production efficiency is improved; the nozzles are arranged on the annular pipe in a staggered mode, the nozzles face different angles, the nozzles can effectively atomize cleaning hot water, the flushing area is enlarged, the inner wall of the cavity is comprehensively cleaned, and the flushing effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of adipic acid crystallizers, specifically to a novel adipic acid crystallizer equipped with a rinsing system. Background Technology

[0002] In existing technologies, the adipic acid crystallization device is a key part of adipic acid production. Currently, horizontal continuous crystallization devices are basically used. This device is divided into twelve independent crystallization chambers, each equipped with an independent surface cooler. A vacuum system is provided by a steam ejector, condenser, and vacuum pump. Utilizing the principle of vacuum adiabatic evaporation, the material is continuously cooled and crystallized.

[0003] However, in the existing technology, during the crystallization process of adipic acid production in industry, the material contains a small amount of easily crystallizing succinic acid and glutaric acid, as well as a large amount of nitric acid. These easily form crystals that adhere to the inner wall of the crystallization chamber, forming scale in the lower part of the crystallization chamber. This scale is difficult to clean and affects the crystallizer's operating cycle. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a novel adipic acid crystallizer equipped with a rinsing system, thereby solving the problem in the prior art where adipic acid crystals easily form crystals that adhere to the inner wall of the crystallization chamber, making them difficult to clean and affecting the crystallizer's operating cycle.

[0005] To achieve the above objectives, this utility model provides a novel adipic acid crystallizer equipped with a rinsing system, comprising a crystallizer body and several rinsing devices. The crystallizer body is provided with several chambers, and the several rinsing devices are respectively arranged in the several chambers. Each rinsing device includes an annular tube and several nozzles. The annular tube is horizontally installed on the side wall of the upper part of the chamber through a support plate, and the nozzles are arranged around the outside of the annular tube.

[0006] Furthermore, the nozzle is provided with interconnected liquid channels and atomizing nozzles, and a V-shaped groove is provided at one end of the nozzle near the atomizing nozzle.

[0007] Furthermore, the diameter of the liquid cavity is larger than the diameter of the atomizing nozzle, and the opening angle of the V-groove is 25~35°.

[0008] Furthermore, each of the chambers is provided with a water inlet pipe on its outer wall, and the water inlet pipe is connected to the annular pipe.

[0009] Furthermore, each of the nozzles faces obliquely downwards, and the angle between any one of the nozzles and the plane of the annular tube is 15° or 30°, and the angles between adjacent nozzles and the plane of the annular tube are different.

[0010] Furthermore, the chambers on both sides of the crystallizer body are respectively connected to a feed inlet and a discharge outlet, and a siphon tube is connected between adjacent chambers. Each chamber is equipped with a stirring device.

[0011] The beneficial effects of this utility model are:

[0012] This invention, by setting an annular pipe and a nozzle in each chamber of the crystallizer, can effectively and quickly spray and wash the inner wall of each chamber, effectively solving the problem of scaling on the inner wall of the crystallizer, avoiding affecting the operating cycle of the crystallizer, and improving production efficiency;

[0013] This invention features staggered nozzles arranged on a ring-shaped tube, with the nozzles facing different angles, enabling comprehensive cleaning of the inner wall of the cavity.

[0014] In this invention, the nozzle can effectively atomize the hot water for cleaning, expand the rinsing area, and improve the rinsing effect. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a diagram of the overall structure of the crystallizer;

[0017] Figure 2 This is an exploded structural diagram of the crystallizer chamber;

[0018] Figure 3 This is a schematic diagram of the upper half of the crystallizer chamber.

[0019] Figure 4 Schematic diagram of nozzle structure Figure 1 ;

[0020] Figure 5 Schematic diagram of nozzle structure Figure 2 ;

[0021] Figure 6 Schematic diagram of nozzle structure Figure 3 ;

[0022] Wherein: 1-crystallizer body, 2-chamber, 3-annular tube, 4-nozzle, 5-liquid channel, 6-atomizing nozzle, 7-V-shaped groove, 8-water inlet pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In one specific embodiment of this utility model, a novel adipic acid crystallizer equipped with a rinsing system includes a crystallizer body 1 and several rinsing devices. The crystallizer body 1 is provided with several chambers 2. Several rinsing devices are respectively arranged in several chambers. Each rinsing device includes an annular pipe 3 and several nozzles 4. The annular pipe 3 is horizontally installed on the side wall of the upper part of the chamber 2 through a support plate. The four nozzles are arranged around the outside of the annular pipe 3.

[0025] The nozzle 4 has interconnected liquid channels 5 and atomizing nozzles 6, and a V-shaped groove 7 is provided at one end of the nozzle 4 near the atomizing nozzles 6.

[0026] The diameter of the liquid channel 5 is larger than the diameter of the atomizing nozzle 6, and the opening angle of the V-groove 7 is 25~35°.

[0027] Each chamber 2 has an inlet pipe 8 installed on its outer wall, and the inlet pipe 8 is connected to the annular pipe 3.

[0028] Several nozzles 4 are all facing diagonally downwards. The angle between any nozzle 4 and the plane where the annular tube 3 is located is 15° or 30°, and the angles between adjacent nozzles 4 and the plane where the annular tube 3 is located are different.

[0029] The chambers 2 on both sides of the crystallizer body 1 are respectively connected to the inlet and outlet. A siphon tube is connected between adjacent chambers 2. A stirring device is installed in each chamber 2.

[0030] The process of using this utility model:

[0031] The lower and middle parts of the inner wall of the crystallizer chamber 2 are prone to scaling. The annular pipe 3 is horizontally installed on the upper part of the chamber 2 through the support plate. The nozzle 4 is connected to the outside of the annular pipe 3 in a ring. The nozzle 4 can atomize the hot water and expand the rinsing range of the hot water. The angle between the nozzle 4 and the plane of the annular pipe 3 is 15° or 30°. The nozzles 4 with the two angles are installed alternately. The installation spacing of adjacent nozzles 4 is determined according to the size of the crystallizer chamber 2 and the size of the atomization spray range of the nozzle 4. The hot water used for rinsing is atomized and sprayed by the nozzle 4, which can cover the entire scale-prone area in the lower and middle parts of the crystallizer chamber 2, and can achieve comprehensive cleaning of the scale-prone area.

[0032] Unless otherwise specified or further limited to one preferred or alternative technical means being another, the preferred and alternative technical means disclosed in this utility model can be arbitrarily combined to form several different technical solutions. Therefore, equivalent changes made according to the claims are still within the scope of this utility model.

Claims

1. A novel adipic acid crystallizer equipped with a rinsing system, characterized in that, The crystallizer body (1) includes a crystallizer body (1) and a number of rinsing devices. The crystallizer body (1) is provided with a number of chambers (2). The number of rinsing devices are respectively arranged in the chambers. Each rinsing device includes an annular tube (3) and a number of nozzles (4). The annular tube (3) is horizontally installed on the side wall of the upper part of the chamber (2) through a support plate. The nozzles (4) are arranged around the outside of the annular tube (3).

2. The novel adipic acid crystallizer equipped with a rinsing system according to claim 1, characterized in that, The nozzle (4) is provided with interconnected liquid channels (5) and atomizing nozzles (6), and a V-shaped groove (7) is provided at one end of the nozzle (4) near the atomizing nozzles (6).

3. A novel adipic acid crystallizer equipped with a rinsing system according to claim 2, characterized in that, The diameter of the liquid cavity (5) is larger than the diameter of the atomizing nozzle (6), and the opening angle of the V-groove (7) is 25~35°.

4. A novel adipic acid crystallizer equipped with a rinsing system according to claim 1, characterized in that, Each of the chambers (2) has an inlet pipe (8) on its outer wall, and the inlet pipe (8) is connected to the annular pipe (3).

5. A novel adipic acid crystallizer equipped with a rinsing system according to claim 1, characterized in that, The nozzles (4) are all oriented diagonally downwards. The angle between any one nozzle (4) and the plane of the annular tube (3) is 15° or 30°, and the angles between adjacent nozzles (4) and the plane of the annular tube (3) are different.

6. A novel adipic acid crystallizer equipped with a rinsing system according to claim 1, characterized in that, The chambers (2) on both sides of the crystallizer body (1) are respectively connected to the inlet and outlet. A siphon tube is connected between adjacent chambers (2). A stirring device is provided in each chamber (2).

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