China Aluminum Zhengzhou Research Institute successfully applied a new double-alkali desulfurization technology

In August 2016, in order to solve the problem of unstable operation and low desulfurization efficiency of the boiler flue gas desulfurization system of China Aluminum Shanxi Huaxing Aluminum, China Aluminum Zhengzhou Research Institute and Shanxi Huaxing Aluminum Industry have adopted a new dual-alkali desulfurization technology to reconstruct the original system. Cooperation framework agreement, and take the project general contracting method. On August 25th, the General Contractor Zhengzhou Research Institute began to reform the 1# boiler flue gas desulfurization system. After the joint efforts of both parties, the first phase of the transformation project successfully passed the smoke into the load test run on December 2. During the trial operation, the equipment is operating normally, the full-load operation of the No. 1 furnace (240t/h), the SO2 concentration of the flue gas at the inlet of the desulfurization tower is 4200mg/Nm3, and the SO2 emission concentration of the export flue gas can be stable for a long time under 20mg/Nm3, which is superior to the super Low-emission standards (national ultra-low emission standards for export SO2 emission concentration of flue gas does not exceed 35mg/Nm3). During the period of stable operation of the 1# boiler flue gas desulfurization system, it was monitored by a third-party testing agency on December 14-15: the SO2 emission concentration of the exported flue gas reached 0-5 mg/Nm3.

In view of the stable operation of the 1# boiler flue gas desulfurization system and excellent emission indicators, Huaxing Aluminium Company decided to immediately start the renovation of the 2#~3# boiler flue gas desulfurization system. At present, the reform of the desulphurization system for No. 2~3# furnaces has been carried out in an orderly manner since December 12. It is expected that the entire transformation will be completed on April 15, 2017.

It is reported that the successful application of this technology has successfully solved the problem of flue gas desulphurization in the aluminum oxide self-provided thermal power station boiler of Huaxing Aluminum, saving over 30 million yuan for Huaxing Aluminum, saving annual operating expenses of 3 million to 4 million yuan, and it is highly popularized. Value.