By Gary Thomas
SGL Group, a manufacturer of carbon-based materials and products, has signed a contract with Qinghai Salt Lake Industry to supply a recovery system that allows re-use and recycling of hydrochloric acid (HCl), which is collected in liquid form during the chemical manufacturing and magnesium melting processes.
The newly signed contract is valued at over 20 million euro. Under the contract, SGL Group will supply the recovery system till the end of 2013 to Qinghai Salt Lake, allowing the company to re-use and recycle HCI.
Frank Wittchen, Chairman of SGL Group’s Business Unit Process Technology, said that the company is honored to become a cooperation partner with Qinghai Salt Lake for this project. He also stated that the company has developed a tailor-made, reliable and innovative system for Qinghai Salt Lake that generates exceptional energy saving when compared to standard systems.
Yu Guoli, Qinghai Salt Lake’s General Manager, said that the investment in the company’s chemical manufacturing and magnesium smelting complex marks a further step in the development and use of salt lake resources. He also added that the project will make Geermu as the world magnesium capital.
SGL Group used its process and engineering expertise to design and build systems meant for corrosive applications, and on this basis, the company has developed a process solution utilizing magnesium chloride as extracting agent in order to reduce operating cost. The recovery system contains a number of equipment such as heat exchangers, reboilers, stripping columns, pipes, pumps, tank, etc. It uses POLYFLURON PTFE and DIABON graphite as core materials.
The HCl recycling systems, available from SGL Group, are popular in the market, especially in the manufacturing process of polysilicon and metals.