Absorption Towers
After leaving the converter, SO3 gas is directed to the three absorption towers. In absorption towers, SO3 reacts with sulfuric acid that escapes from all-steel acid showers embedded inside the towers and becomes: 2 H2SO4 SO3 + H2SO4 + H2O =
Sulfuric acid is charged into the towers by Siemens all-steel pumps. The high concentration of produced acid enters the circulating tanks and water is added to the high concentration of acid so that the acid reaches the desired purity percentage. It is also necessary to point out that in Caspian Acid Company, consumable water is first hardened by hardening devices and conductors and converted into soft water, and then used for the production process.
In the process of converting SO3 to sulfuric acid, the temperature of sulfuric acid increases significantly, high-temperature acid is very corrosive, so the temperature of the acid should be controlled in the range of ˚50 to ˚60, while in addition to controlling the temperature of the material Consumption pipes should also be stainless steel (S 316 L).
Also, Caspian Acid Shomalgharb Company, relying on the power of interior designers, has been able to build all-steel acid converters and advanced air coolers using modern European technology, invent a new method to control the temperature of the acid and prevent the loss of a significant amount of water consumption and maintain it in the production cycle.
Also, since the need for electricity in acid factories is so vital that it is not possible to stop production, so the Caspian acid company is equipped with a dedicated power substation and, by using the 1 MW Cummins diesel generator of the United States, it has taken the necessary measures to prevent problems in the production process in order to fulfill the obligations of Caspian Acid Company to its customers without any defects.
Since the produced acid is very important both for Caspian Northwest Company and for the factories consuming this product, both in terms of concentration and being free of any elements that affect the quality of the product (such as iron, etc.). Therefore, the percentage and quality of the company's product is determined by fully automatic American machines without manual intervention, under the supervision of Caspian Acid Shomalgharb tern Company's specialized personnel in the control room.
It should be noted that Caspian Acid Shomalgharb Company, with its plc system and connection of all devices to the monitoring system, is the most advanced sulfuric acid production plant in Iran. Finally, the final product is checked and controlled by the quality control department.
Reputable laboratories have also confirmed the quality of the company's product by presenting their detailed analyzes. Finally, the final product with a concentration of 98.5 is emptied in the storage tank and after loading in the company-specific trailers will be provided for consumers.
