CN202199448U - Spray head - Google Patents

Abstract

A spray head relates to a spray head of spray liquid for cooling and purifying flue gas in the process of metallurgy and chemical engineering. It is characterized in that the structure comprises: the side wall of the liquid inlet pipe section is uniformly provided with a spray head core body with liquid distribution holes, a spray head seat of a straight pipe cap-shaped body of the liquid inlet pipe section sleeved on the spray head core body at intervals, and a liquid distribution disc with a central liquid outlet hole and side liquid outlet holes uniformly distributed in the circumferential direction of the side part. The utility model discloses a shower nozzle for adiabatic evaporation clean system and tail gas desulfurization system will cool down and once only high-efficient the completion of purification work, and be applicable to the circulation liquid concentration scope of broad. The device has the characteristics of wide application range, good cooling effect, high purification efficiency, simple structure and easy manufacture.

Description

a nozzle

technical field

The utility model relates to a nozzle, which relates to a nozzle for a spray liquid used for cooling and purifying flue gas in a metallurgical and chemical process.

Background technique

During the smelting process, the smelting flue gas is usually purified before being discharged or made into acid. In the sulfur-containing smelting flue gas acid production process, when the smelting flue gas is purified, the flue gas is usually contacted with the spray liquid for purification, and the spray liquid is produced by spraying the nozzle.

At present, the nozzles in use include centrifugal nozzles, porous nozzles, etc. Centrifugal nozzles are often used in empty tower equipment. This nozzle has strong applicability and low gas resistance, but due to the large volume of the whole set of equipment, low efficiency and high investment.

Porous nozzles are often used in packed towers, foam towers, etc. The nozzles have good atomization effect and uniform spraying density. However, due to the difficulty in processing the nozzle, a relatively high atomization pressure is required, and the concentration of the circulating fluid is strictly required, and a large amount of water is required.

Contents of the invention

The purpose of this utility model is to provide a nozzle that can complete the cooling and purification process at one time and is suitable for a wide range of circulating liquid concentration.

The purpose of this utility model is achieved through the following technical solutions.

A nozzle is characterized in that its structure comprises:

Spray head core body - the core body is a spray liquid inlet pipe section which is a straight pipe, a reduced-diameter pipe section connected as a whole, and a spray liquid outlet pipe section which is a straight pipe connected with the upper end of the reduced-diameter pipe section; Liquid distribution holes are evenly distributed on the side wall of the liquid pipe section;

Nozzle seat--the nozzle seat is a straight pipe cap with a top top that is threadedly connected with the outer wall of the upper end of the liquid inlet pipe section of the nozzle core body, and is set on the liquid inlet pipe section of the nozzle core body at intervals;

Liquid separator plate—the liquid separator plate is a circular plate whose outer edge is threaded and fixed to the inner wall of the lower end of the straight pipe cap of the nozzle seat; There are edge liquid outlet holes on the cloth, and the side liquid outlet holes of the liquid distribution plate correspond to the position of the annular gap formed between the nozzle core body and the nozzle seat; the upper surface of the liquid separation plate presses against the lower end of the nozzle core body.

A spray head of the present utility model is characterized in that the liquid distribution holes evenly distributed on the side wall of the liquid inlet pipe section of the core body of the spray head are three 120-degree equally divided holes.

A nozzle of the utility model is characterized in that an external flange is fixedly connected to the outer wall of the lower end of the nozzle seat.

A spray head of the utility model is used in adiabatic evaporation purification system and tail gas desulfurization system, which can efficiently complete the cooling and purification work at one time, and is suitable for a wide concentration range of circulating liquid. The utility model has the characteristics of wide application range, good cooling effect and high purification efficiency, and has a simple structure and is easy to manufacture.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic structural view of the nozzle seat of the present invention.

Fig. 3 is a schematic structural view of the nozzle core of the present invention.

Fig. 4 is a structural schematic diagram of the liquid separator of the present invention.

Fig. 5 is a top view of Fig. 4 .

Detailed ways

A spray head, its structure includes: spray head core 1—the core body is a spray liquid inlet pipe section that is a straight pipe, a reduced-diameter pipe section that is integrated, and a straight pipe that is integrated with the upper end of the reduced-diameter pipe section. The spray liquid outlet pipe section; on the side wall of the liquid inlet pipe section, there are distribution liquid holes 2 evenly distributed; the nozzle seat 3--the nozzle seat is opened on the top and has a threaded connection with the outer wall of the upper end of the nozzle core body inlet pipe section, and The straight tube cap that is set at intervals on the liquid inlet pipe section of the nozzle core; the liquid separator 4—the liquid separator is a circle that is threaded on the inner wall of the lower bottom end of the straight tube cap of the nozzle seat. Shaped disk; the circular disk is centered with a central liquid outlet hole 5, and the edge portion is evenly distributed with side liquid outlet holes 6, and the side liquid outlet holes of the liquid separator plate correspond to the position of the annular gap formed between the nozzle core and the nozzle seat; The top surface of the liquid separator plate is pressed against the lower end of the nozzle core.

During use, a nozzle of the present utility model is connected with the external liquid inlet device through the external flange 7 fixedly connected to the outer wall of the lower end of the nozzle seat. After the liquid enters through the liquid inlet pipe, it is first divided by the liquid distribution plate. About 70% of the liquid enters the nozzle body through the center liquid outlet hole of the liquid distribution plate as the main channel, and the rest of the liquid enters the nozzle seat and the outer wall of the nozzle core to form an annular gap. Through the annular gap between the nozzle seat and the nozzle core, and then through the three 120-degree swirl holes in the lower part of the nozzle core, the swirl holes can have a certain inclination during processing, and enter the nozzle body, resulting in a nozzle The liquid in the body rotates, which makes the pressure distribution of the liquid more uniform and reduces the resistance in the nozzle body.

Example

For the purification section of smelting flue gas acid production enterprises, according to the corresponding process cooling and dust removal requirements, the inlet temperature is between 200-400°C, the outlet temperature is between 50-60°C, and the gas flow rate should be controlled between 10-15m/s , the liquid flow rate is controlled between 10-20m/s; the purified liquid forms an upward rotating fluid through the nozzle, which covers the entire flue gas channel and is in reverse contact with the flue gas. On the contact surface, due to the interaction between the two It can form a foam layer with a certain height to capture the dust in the flue gas. The larger gas-liquid contact area ensures that the liquid can fully absorb some soluble gases in the flue gas, and the gas-liquid heat exchange is sufficient, which enhances the Flue gas cooling effect; after the device is put into use, it can ensure that the temperature of the flue gas entering the next process is below 60°C, the dust removal efficiency can reach more than 98%, and the liquid with a solid content of less than 30% can be used normally.

Claims (3)

1. A nozzle, characterized in that its structure comprises: Spray head core body - the core body is a spray liquid inlet pipe section which is a straight pipe, a reduced-diameter pipe section connected as a whole, and a spray liquid outlet pipe section which is a straight pipe connected with the upper end of the reduced-diameter pipe section; Liquid distribution holes are evenly distributed on the side wall of the liquid pipe section; Nozzle seat--the nozzle seat is a straight pipe cap with a top top that is threadedly connected with the outer wall of the upper end of the liquid inlet pipe section of the nozzle core body, and is set on the liquid inlet pipe section of the nozzle core body at intervals; Liquid separator plate—the liquid separator plate is a circular plate whose outer edge is threaded and fixed to the inner wall of the lower end of the straight pipe cap of the nozzle seat; There are edge liquid outlet holes on the cloth, and the side liquid outlet holes of the liquid distribution plate correspond to the position of the annular gap formed between the nozzle core body and the nozzle seat; the upper surface of the liquid separation plate presses against the lower end of the nozzle core body. 2. A spray head according to claim 1, characterized in that the liquid distribution holes evenly distributed on the side wall of the liquid inlet pipe section of the spray head core body are three 120-degree equally divided holes. 3. A nozzle according to claim 1, characterized in that an external flange is fixedly connected to the outer wall of the lower end of the nozzle seat.

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