1、 Overview

The acid gas absorption and purification tower equipment in the polyaluminum chloride industry is a combined tail gas treatment device designed and developed specifically for the characteristics of high-temperature acidic dusty waste gas generated in this industry. It has been widely used in this industry and has been recognized and praised by users.

2、 Working principle

1. Process flow

Waste gas - Acid gas absorption tower - Centrifugal fan - Acid gas purification tower - Centrifugal fan - Standard gas emission

2. Process principle

The exhaust gas first enters the acid gas absorption tower. Under the centrifugal force of the ventilation fan, the acid gas is fully combined with the gas liquid, and the remaining unabsorbed tail gas will enter the acid gas purification tower. The gas enters the tower from the inlet below the tower and quickly fills the inlet space under the power of the ventilation fan. Then it rises evenly. The alkali solution is evenly distributed to various distribution pipes under the action of the circulation pump and fills the entire tower space in a house shape. It is completely saturated with the rising gas and undergoes a thorough chemical reaction quickly, so that the neutralized standard gas is discharged into the atmosphere.

3、 Structure and Characteristics

The acid gas absorption and purification tower equipment in the polyaluminum chloride industry is a combined processing equipment, consisting of acid gas absorption tower, centrifugal fan, acid gas purification tower and other accessories.

Sour gas absorption tower

A、 The cylinder of this equipment is made of fiberglass wrapped as a whole, with high strength, and there are no flange connecting bolts on the cylinder; The sprinkler pipe is made of PVC or PP material, and the nozzle is made of PP material

B、 This device uses multi-faceted hollow sphere packing to fully combine the exhaust gas with the solution.

C、 Installing a backwash automatic sewage filtration device at the tower and pump suction outlet enables timely discharge of system pollutants without clogging the pipeline machine nozzles.

Sour gas purification tower

A、 The cylinder of this equipment is made of fiberglass wrapped as a whole, with high strength, and there are no flange connecting bolts on the cylinder; The sprinkler pipe is made of PVC or PP material, and the nozzle is made of PP material

B、 This device uses multi-faceted hollow sphere packing to fully combine the exhaust gas with the solution.

C、 Add an aeration device in the lower half of the tower to fully combine the acid gas with the solution, resulting in better treatment efficiency.

This acid gas absorption and purification tower system can be equipped with online analyzers, pressure sensors, differential pressure transmitters, flow sensors, control cabinets, etc. It can implement automatic control devices such as gas online analysis and monitoring, automatic alarm for gas exceeding standards, automatic interlocking of gas flow and pressure transmission with fan operation, and automatic digital display for this system. It can be manually, semi automatically, and automatically controlled according to usage requirements.

4、 Technical parameters and selection

Due to different technical parameters such as gas concentration and temperature, this treatment equipment should be designed and selected according to actual conditions. Our company has a specialized design program that can design specific technical parameters that meet the standards according to the actual situation.

The design conditions that users need to provide include:

1. Provide a usable site for equipment operation;

2. Provide the amount and concentration of exhaust gas, temperature, and the standards required for treatment;

3. Provide whether the control mode is manual or automatic, and the degree of control achieved;

4. Provide us with the equipment and supporting facilities, pipelines, and accessories that we need to supply.

5、 Installation and usage precautions

1. This equipment should be installed on a concrete foundation that is at least 100mm above the ground.

2. During installation, pay attention to protecting the equipment and avoid damaging the body and exposed parts.

3. Before use, the absorbent must be added until the overflow pipe overflows.

4. When using, the circulating water pump should be turned on for 2-3 minutes before turning on the fan; When shutting down, the fan should be stopped for 1-2 minutes before stopping the circulating water pump.

5. Attention should be paid to supplementing the absorption solution during use, and the solution should be supplemented or replaced according to the pH value of the solution to ensure absorption effectiveness; It is recommended that the pH value should be greater than 10.

6. Attention should be paid when starting the water pump: the pump cannot be reversed or idle.