CN205055728U - Remove foam device - Google Patents

Abstract

The utility model discloses a defoaming device, which comprises a tank body, which is characterized in that the tank body is composed of an upper cylindrical body connected to a lower cone body, an exhaust port is arranged on the top of the cylinder body, and the cone body The bottom is provided with a liquid discharge port, and a partition is installed in the cylinder to separate the cylinder into upper and lower parts. The middle of the partition is opened and an air guide tube is provided. The cylinder is provided with a tangential The air inlet of the cylinder is also provided with a wire mesh demister above the partition. The defoaming device described in the utility model can completely separate gas and liquid, remove liquid droplets containing toxic substances, have high defoaming efficiency, reduce emission pollution, and at the same time prevent tiny solid particles from accumulating and blocking the wire mesh defoamer, ensuring defoaming The device works stably and normally for a long time.

Description

A defoaming device

technical field

The utility model relates to the technical field of gas-liquid separation devices, in particular to a foam removal device.

Background technique

Most of the production of wet-process phosphoric acid uses phosphate rock that passes through the abdominal muscle as raw material. This phosphate rock usually contains 3 to 4% fluorine. The phosphate rock is divided into structures by sulfuric acid. It exists in the form of fluosilicic acid and fluosilicate in the phosphoric acid solution. When the mixed silica in the phosphate rock is insufficient, the phosphoric acid may also contain hydrogen fluoride. The fluorine-containing gas is highly corrosive and will cause damage to the human body, so the fluorine-containing tail gas of the phosphoric acid plant must be washed before it can be discharged. There will be a lot of water vapor in the exhaust gas after washing treatment, and the water vapor also carries residual hydrofluoric acid and other pollutants. Direct discharge will pollute the environment and damage the health of personnel. In the existing defoaming device, the gas-liquid separation effect is not thorough enough, the defoaming effect is poor, and the efficiency is low.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to improve the existing technology and provide a defoaming device to solve the problem that the gas-liquid separation effect of the traditional defoaming device in the current technology is not thorough enough to completely remove the water vapor. The defoaming efficiency is low, which is easy to pollute the environment.

For solving the above technical problems, the technical solution of the utility model is:

A defoaming device, comprising a tank, characterized in that the tank is composed of an upper cylinder connected to a lower cone, the top of the cylinder is provided with an exhaust port, and the bottom of the cone is provided with a drain There is also a partition in the cylinder body to divide the cylinder into upper and lower parts. The middle part of the partition is opened and an air guide tube is set. The cylinder is provided with a tangential air inlet on the wall below the partition. , There is also a wire mesh demister above the partition in the cylinder. The defoaming device described in the utility model uses a partition to separate the lower part of the tank body into a structure of a cyclone dust collector. When the gas enters through the air inlet, the air flow will change from a linear motion to a circular motion, and most of the rotating air flow It spirals downward along the wall of the container and flows into the cone. The gas generates centrifugal force during the rotation process and throws the liquid droplets and tiny solid particles to the wall. Once the liquid droplets and tiny solid particles contact the wall, they will Due to gravity falling along the wall and entering the discharge port, when the rotating and descending airflow reaches the cone, it moves closer to the center of the cone due to the shrinkage of the cone shape. When the airflow reaches a certain position at the lower end of the cone, it rotates at the same The direction is from the middle part of the cyclone dust collector, reversed from the bottom to the top, and continues to do the spiral movement to form an upward-swirling airflow, which enters the upper part of the cylinder through the air duct, and the airflow passes through the wire mesh demister to continue to remove the residual liquid droplets, thereby Improve the effect of gas-liquid separation, completely remove water vapor, improve the demister effect, reduce emission pollution, and at the same time avoid the accumulation of tiny solid particles to block the wire mesh demister, and ensure the long-term, stable and normal operation of the demister device.

Further, a baffle plate is provided below the exhaust port in the cylinder, and the baffle plate is used to further block the discharge of liquid droplets, and the liquid droplets accumulate on the lower surface of the baffle plate and then drip to improve the gas-liquid separation effect.

Further, the baffle is arc-shaped, so that the droplets can smoothly fall along the baffle, so that the droplets in the airflow can be more effectively accumulated on the baffle.

Further, the wire mesh demister includes a wire mesh block and a defoamer plate formed by superimposing a number of wire meshes. The defoamer plate is provided with a number of ventilation holes running through the upper and lower sides, and the wire mesh block is clamped by the upper and lower clamping rings. Fixed, the defoamer plate is located on the lower surface of the wire mesh block. The utility model utilizes the defoaming plate to effectively remove the mist in the airflow, and the mist accumulates in the vent hole of the defoaming plate to form droplets with larger particle diameters, and flows down along the vent hole after exceeding the upward force of the airflow.

Further, the vent hole on the demister plate is a wave structure, and when the airflow flows through the curved part of the vent hole, it is more conducive to the increase of the particle size of the droplet due to the centrifugal force and the friction with the inner wall of the vent hole. As a result, the droplets quickly accumulate and become larger to form large droplets whose own gravity exceeds the uplift force of the airflow, and the large droplets flow down the inner wall of the vent hole.

Compared with the prior art, the utility model has the advantages of:

The defoaming device described in the utility model can completely separate gas and liquid, remove liquid droplets containing toxic substances, have high defoaming efficiency, reduce emission pollution, and at the same time prevent tiny solid particles from accumulating and blocking the wire mesh demister, ensuring defoaming The device works stably and normally for a long time; the utility model has the advantages of low energy consumption, small investment, simple structure, small and exquisite appearance, and saves floor space.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic structural view of the wire mesh demister.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The defoaming device disclosed in the embodiment of the utility model can completely separate gas and liquid, remove droplets containing toxic substances, has high defoaming efficiency, can work normally for a long time, and reduces environmental pollution caused by sewage discharge.

As shown in Fig. 1 and Fig. 2, a kind of defoaming device, comprises tank body, it is characterized in that, described tank body is made up of the cylinder body 1 of upper part and the cone body 2 of lower part, and the top of cylinder body 1 An exhaust port 3 is provided, and a baffle plate 9 is arranged below the exhaust port 3. The baffle plate 9 is arc-shaped, and the bottom of the cone 2 is provided with a liquid discharge port 4, and a partition plate is also provided in the cylinder body 1. 5 Divide the cylindrical body 1 into upper and lower parts, the middle part of the partition 5 has a hole and is provided with an air duct 6, and the cylindrical body 1 is provided with a tangential air inlet 8 on the wall below the partition 5, and the cylindrical body 1 is also provided with a wire mesh demister 7 above the partition 5.

The wire mesh demister 7 includes a wire mesh block 10 and a defoamer 11 formed by superimposing some wire meshes. The defoamer 11 is provided with some ventilation holes that run through the upper and lower sides. The ventilation hole is a wave structure. The wire mesh block 10 consists The upper and lower clamping rings are clamped and fixed, and the defoaming plate 11 is located on the lower surface of the screen block 10 .

The above are only preferred implementations of the present utility model. It should be pointed out that the above-mentioned preferred implementations should not be regarded as limitations on the present utility model, and the protection scope of the present utility model should be based on the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims (5)

1. A demisting device, comprising a tank, characterized in that the tank is composed of an upper cylinder (1) connected to a lower cone (2), and the top of the cylinder (1) is arranged The exhaust port (3), the bottom of the cone (2) is provided with a liquid discharge port (4), and the inside of the cylinder (1) is also provided with a partition (5) to separate the cylinder (1) into upper and lower parts , the middle part of the partition (5) is perforated and provided with an air duct (6), and the cylindrical body (1) is provided with a tangential air inlet (8) on the wall below the partition (5), and the cylindrical body ( 1) A wire mesh demister (7) is also arranged above the partition (5). 2. The demisting device according to claim 1, characterized in that, a baffle (9) is further provided in the cylindrical body (1) under the exhaust port (3). 3. The demister device according to claim 2, characterized in that, the baffle (8) is arc-shaped. 4. The demister device according to claim 1, characterized in that, the wire mesh demister (7) comprises a wire mesh block (10) and a demister plate (11) formed by stacking several wire meshes , the defoaming plate (11) is provided with some air holes that run through up and down, the screen block (10) is clamped and fixed by the upper and lower clamping rings, and the defoaming plate (11) is positioned at the lower surface of the screen block (10). 5. The demister device according to claim 4, characterized in that, the ventilation holes on the demister plate (11) are in a corrugated structure.