In the sulfuric acid production industry, many articles fail to provide a detailed account of the equipment required for a sulfuric acid plant. This often happens because experts are focused on their specialized tasks and may not have time to outline these details. As a result, content created for SEO purposes can diverge significantly from actual practices. This article will use the Sulfuric Acid Production on sulfur based (DCDA) process as an example to detail the essential equipment needed in a sulfuric acid plant, including both dynamic and static equipment.
1.Sulfur Melting Area
The main function of the sulfur melting area is to melt solid sulfur. The equipment needed in this area includes:
Agitator: Used to uniformly mix the molten sulfur.
Heating Coils: Used to heat the sulfur to assist in melting and can also be used for insulation to maintain the molten state.
Pumps: For transferring molten sulfur.
Liquid Flow Filter: Filters out impurities from the molten sulfur.
Steam Jacketed Pipes and Valves: Used to transport the liquid flow and control its rate.
-Storage Tanks: For storing molten sulfur.
2. Gas Section
The main function of the gas section is to burn liquid sulfur to produce SO₂ and then oxidize SO₂ to SO₃. The equipment required for this section includes:
Sulfur Furnace: Used to burn sulfur to generate SO₂.
Waste Heat Boiler: Recovers waste heat from the sulfur burner.
Converter: Converts SO₂ into SO₃.
Preheater and Preheat Furnace: Used during the plant startup to heat the converter to the catalyst’s ignition temperature.
Economizer: Heats water coming from the deaerator.
Superheater: Converts steam into saturated steam.
Heat Exchanger (Hot and Cold): Exchanges heat from the flue gas, maintaining system thermal balance.
3. Acid Production Section
The main function of the acid production section is to remove moisture from the air and absorb SO₃ to produce sulfuric acid. The equipment required includes:
Air Bolower: Get air from the atmosphere.
Drying Tower: Removes moisture from the air. Industry standards require that the moisture content of the dry air should be less than 0.1 g/Nm³.
Intermediate Absorption Tower and Final Absorption Tower: Absorb SO₃ to produce sulfuric acid.
Mist Eliminator: Removes mist droplets inside the tower.
Acid Distributor: Separates acid from each acid pipe to ensure full contact with SO₃ for effective absorption.
Packing: Provides more surface area to facilitate the reaction.
Acid Cooler: Cools the sulfuric acid.
Acid Pump: circulating sulfuric acid.
Acid Tank: Stores product sulfuric acid.
Off-gas scrubber: Remove SO2/SO3 to limit emission level
The product acid will enter the product acid tank and be stored in the acid storage tank for downstream use.
4. Cooling Tower
The main function of the cooling tower is to provide cooling water to the acid cooler. The primary equipment includes:
Fan: Facilitates airflow to increase cooling efficiency.
Circulation Water Pump: Circulates cooling water.
Spray System: Sprays water to enhance cooling effects.
Water Collector: Collects cooling water.
Packing: Increases the contact area between water and air to enhance cooling efficiency.
This is an overview of the main equipment involved in the sulfuric acid production (DCDA) process. If the acid plant also includes power generation, additional facility such as a power plant and Demin plant will be required. If you are considering investing in a sulfuric acid plant, you can contact us to learn about the costs of related equipment. We hope this article is helpful to you.
