acid recovery plant的意思|示意

'

Acid recovery plant is a type of industrial plant used in secondary air pollution control. It is used to capture and collect sulfuric and hydrochloric acid fumes produced during the oxidation of sulfur substances in the manufacturing process. The acid recovery plant work in a similar way to an ordinary chemical scrubber, but instead of collecting and recycling the acidic gases, it processes acid that is emitted from a stack, scrubbing the fumes and reclaiming the acid for reuse.

The primary use of acid recovery plants is to reduce the emissions of sulfuric and hydrochloric acid into the atmosphere and protect both human health and the environment from exposure to these pollutants. It also reduces the amount of waste that is generated from the production process and can significantly reduce a company's operational costs by recovering and reusing the acid.

Acid recovery plants are most commonly used in industries that produce high levels of sulfur dioxide or other sulfur-containing particles, such as coal power plants, cement kilns, and steel mills. They are also used to capture acidic gases that are produced when oil is burned in internal combustion engines.

The process used in an acid recovery plant works by adding a neutralizing agent, such as lime or sodium bicarbonate, to the acid-containing gas stream. This neutralizing agent is then combined with the acid and collected in a collection vessel. The collected liquid is then passed through a series of neutralizing vessels which further reduce the acidity of the solution before it is discharged.

The most common types of acid recovery plants are either packed bed scrubbers or spray towers. Both of these systems are efficient but the spray tower is more cost effective. The system works by spraying a various sized droplets of the acidic gas onto a large surface area, such as a structure of trays or plates. The droplets then collect on the surface and are collected in a collection vessel.

In conclusion, acid recovery plants are an important part of secondary air pollution control. They capture and collect acidic gas emissions from a wide range of industrial processes, reducing the amount of pollution released into the atmosphere and helping to protect both the environment and human health from exposure to these pollutants.