CN204699583U - A pickling tower inlet distribution device - Google Patents

Abstract

The utility model provides a pickling tower inlet gas distributor, includes pickling tower air inlet pipeline, bevel apron, draft tube, backup pad, pickling tower inlet pipeline and pickling tower run through mutually and be connected, and pickling tower inlet pipeline becomes the downward sloping setting, and the bevel apron is located the inside of pickling tower, the top of pickling tower inlet pipeline, and the upper end and the fixed airtight connection of pickling tower inner wall of bevel apron, the lower extreme of bevel apron and the fixed airtight connection in upper end of draft tube, and the lower extreme of draft tube passes through backup pad and pickling tower inner wall fixed connection. The utility model provides a pickling tower distribution device that admits air can realize the gaseous evenly distributed in the tower, prevents that the pickle from getting into gas pipeline corrosion pipeline, and pickling tower admission distribution device simple structure simultaneously, operation elasticity is big, prevent that crystallization from blockking up, the gas flow resistance is little, makes easy processing, simple to operate.

Description

A pickling tower inlet distribution device

technical field

The utility model relates to the technical field of coking equipment, in particular to an air inlet distribution device for a pickling tower.

Background technique

In terms of coking and coal chemical industry, the pickling tower is a commonly used chemical equipment in the gas treatment process. In the process of producing ammonium sulfate by pickling method, the sulfuric acid mother liquor is mainly used to absorb the ammonia in the gas, and then undergoes evaporation, crystallization, separation and drying to produce qualified ammonium sulfate. The absorption process of ammonia is mainly carried out in the pickling tower. The pickling tower is a multi-stage empty spraying tower. The sulfuric acid mother liquor evenly sprayed by the nozzle and the ammonia-containing gas are countercurrently contacted and absorbed, and an unsaturated ammonium sulfate mother liquor is formed in the pickling tower for subsequent evaporation and crystallization processes.

At present, the pickling tower used in the coking industry is a relatively expensive acid corrosion-resistant material, and the investment in equipment is relatively high.

In addition, in order to prevent the occurrence of clogging after crystallization, no other devices are installed at the gas inlet section of the pickling tower and the contact area between gas and sulfuric acid mother liquor in the prior art. Acid gas will diffuse and mix into the intake pipe opening, causing corrosion and damage to the gas pipeline.

At the same time, during the formation of ammonium sulfate, the gas in the tower is completely in contact with the sulfuric acid mother liquor. However, due to the uneven distribution of gas in the tower, the gas and acid liquid cannot fully contact, so the reaction is not sufficient. In order to solve this problem, it is often necessary to increase the height of the pickling tower to prolong the contact time between the gas and the acid liquid to achieve the purpose of sufficient reaction. This increases the manufacturing cost of the equipment to a large extent.

Contents of the invention

The purpose of this utility model is to provide an air intake distribution device for pickling towers, which uses downwardly inclined gas inlets, guide cylinders, guide plates and inclined cover plates to achieve uniform distribution of gas, prevents corrosion of gas pipelines, and does not cause sulfur The clogging phenomenon after ammonium crystallization can technically reduce the height of the pickling tower and reduce equipment investment; realize the uniform distribution of gas in the tower, no clogging phenomenon of ammonium sulfate crystallization, and prevent acid gas from corroding pipelines.

In order to achieve the above object, the utility model adopts the following technical solutions:

A pickling tower inlet distribution device, comprising a pickling tower inlet pipe, an inclined cover plate, a guide cylinder, and a support plate, the pickling tower inlet pipe is connected to the pickling tower, and the pickling tower inlet The gas pipeline is set in a downward slope. The inclined cover is located inside the pickling tower and above the intake pipe of the pickling tower. The upper end of the inclined cover is fixed and airtightly connected with the inner wall of the pickling tower. The upper end of the guide tube is fixed and airtightly connected, and the lower end of the guide tube is fixedly connected with the inner wall of the pickling tower through a support plate.

The downward inclination angle θ of the inlet pipe of the pickling tower is 10°-60°.

The inclined cover plate is a downwardly inclined ring plate, and the downwardly inclined angle α is 10°-60°.

A gas guide plate is fixed on the side of the bottom of the guide tube facing the intake pipe of the pickling tower, the gas guide plate is airtightly connected with the guide tube, and a rectangular discharge is evenly arranged on the other side of the bottom of the guide tube Teeth, the central angle of the liquid discharge teeth ranges from 30° to 270°.

The gas guide plate is an arc-shaped ring plate, and the central angle of the gas guide plate ranges from 30° to 180°.

Compared with the prior art, the beneficial effects of the utility model are:

A pickling tower air inlet distribution device, the downwardly inclined air inlet can effectively prevent the sulfuric acid mother liquor from entering the inlet pipe to corrode the pipe, the design of the guide tube makes the inflowing gas evenly distributed inside the tower body, and the liquid discharge teeth are effective To balance the gas pressure and the liquid level difference at the bottom of the pickling tower, the gas guide plate can well adjust the direction and proportion of the incoming gas flowing into the draft tube. This equipment has the advantages of stable operation, uniform distribution, low investment cost, no clogging after crystallization, etc., and convenient maintenance to ensure safe and stable operation of the production process.

Description of drawings

Fig. 1 is the structural representation of a kind of pickling tower gas distribution device of the utility model;

In the figure: 1. Reinforcement plate 2. Pickling tower intake pipe 3. Gas guide plate 4. Pickling tower body 5. Inclined cover plate 6. Guide tube 7. Support plate 8. Liquid discharge teeth

Detailed ways

The utility model is described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the utility model is not limited to the following embodiments.

As shown in Figure 1, a kind of pickling tower air inlet distribution device comprises pickling tower air inlet pipe 2, inclined cover plate 5, guide tube 6, support plate 7, described pickling tower air inlet pipe 2 and The pickling towers 4 are interlinked and connected, and the inclined cover plate 5 is located inside the pickling tower 4 and above the pickling tower inlet pipe 2. The upper end of the inclined cover plate 5 is fixed and airtightly connected with the inner wall of the pickling tower 4. The lower end of the guide tube 6 is fixedly and airtightly connected with the upper end of the guide tube 6, and the lower end of the guide tube 6 is fixedly connected with the inner wall of the pickling tower 4 through the support plate 7.

The guide cylinder in the utility model plays the role of stabilizing pressure and guiding flow.

The inlet pipe 2 of the pickling tower is arranged obliquely downward, and its downward inclination angle θ is 10°-60°.

The inclined cover plate 5 is a downwardly inclined ring plate, and the downwardly inclined angle α is 10°-60°.

The slanting cover plate is welded to the inner wall of the pickling tower, and reinforcement plates are evenly arranged at the joint weld between the upper part of the sloping cover plate and the pickling tower to enhance the welding strength between the sloping cover plate and the pickling tower.

On the side of the bottom of the guide tube 6 facing the pickling tower intake pipe 2, a gas guide plate 3 is fixed, and the gas guide plate 3 is airtightly connected with the guide tube 6, and on the other side of the bottom of the guide tube 6 The rectangular liquid discharge teeth 8 are evenly arranged, and the central angle of the liquid discharge teeth 8 ranges from 30° to 270°.

The gas guide plate 3 is an arc-shaped ring plate, and the central angle of the gas guide plate 3 ranges from 30° to 180°.

The material of the air inlet distribution device of the pickling tower is stainless steel, alloy steel, ceramics or plastics and other materials resistant to acid corrosion.

When in use, the gas enters the pickling tower body through the pickling tower inlet pipe 2, and there is no corrosive liquid retention phenomenon in the inclined inlet pipe inlet, which has the effect of preventing corrosion. After the gas enters the pickling tower body, it goes around The diversion cylinder 6 flows, and a small amount of atomized liquid adheres to the wall of the pickling tower and flows downward under the action of centrifugal force. The gas flowing in the flow tube 6 flows down slowly, and when it reaches the bottom of the flow guide tube 6, it flows into the inside of the flow guide tube 6 evenly. The liquid discharge teeth 8 realize the balance adjustment of the gas-liquid pressure, and the support plate 7 plays the role of connecting and stabilizing the structural shape of the guide cylinder 6. Finally, the gas inside the guide cylinder 6 flows upward evenly, and the gas is evenly distributed in the pickling tower.

The utility model utilizes the principles of gas distribution, gas-liquid separation and pressure balance to realize the uniform distribution of the intake air of the pickling tower. In the process of gas distribution and ammonium sulfate formation, there is no corrosion of the intake pipe, no blockage after crystallization, and the gas distribution is uniform; This equipment reduces investment costs, is easy to maintain, and ensures safe and stable operation of the production process.

The above is only the basic principle of the utility model, and does not limit the utility model in any way. All equivalent changes and modifications according to the utility model are within the scope of the technical protection scheme of this patent.

Claims (5)

1. A pickling tower air intake distribution device is characterized in that: it comprises a pickling tower air inlet pipeline, an inclined cover plate, a deflector, and a support plate, and the pickling tower air intake pipeline is intersected with the pickling tower Connection, the intake pipe of the pickling tower is set at a downward slope, the inclined cover is located inside the pickling tower and above the intake pipe of the pickling tower, the upper end of the inclined cover is fixed and airtightly connected with the inner wall of the pickling tower, and the inclined cover is The lower end of the guide tube is fixedly and airtightly connected with the upper end of the guide tube, and the lower end of the guide tube is fixedly connected with the inner wall of the pickling tower through a support plate. 2 . The pickling tower air intake distribution device according to claim 1 , characterized in that: the downward inclination angle θ of the pickling tower intake pipe is 10°-60°. 3 . The pickling tower air intake distribution device according to claim 1 , wherein the slanted cover plate is a downwardly inclined ring plate, and the downwardly inclined angle α is 10° to 60°. 4 . 4. A kind of pickling tower air inlet distribution device according to claim 1, characterized in that: the bottom of the guide cylinder is fixed to the side of the pickling tower inlet pipe, and the gas guide plate is connected with the gas guide plate. The guide cylinder is airtightly connected, and the other side of the bottom of the guide cylinder is uniformly arranged with rectangular liquid discharge teeth, and the central angle of the liquid discharge teeth ranges from 30° to 270°. 5. A pickling tower inlet distribution device according to claim 4, characterized in that: the gas guide plate is an arc-shaped ring plate, and the central angle of the gas guide plate ranges from 30° to 180°.