PKU Pioneer has been thoroughly implementing the long-term strategy for the development of environmental protection. Taking the efficient utilization of industrial exhaust gas as the entry point and the continuous improvement of gas purification technology as the sharp weapon, PKU Pioneer has been creating great value in environmental protection and fulfilling the corporate social responsibility of building green industrial development. In addition to the major business of VPSA & PSA oxygen production, in 2021, PKU Pioneer’s implemented projects of industrial tail gas disposal included PSA (pressure swing adsorption) CO purification projects, flue gas desulfurization & denitrification projects, yellow phosphorus tail gas continuous purification and dephosphorization projects, and blast furnace gas fine desulfurization projects.

In October 2021, the world's first raw coke oven gas-to-ethylene glycol project was put into operation, in which the world's largest PSA-CO purification plant built by PKU Pioneer was successfully put into production. The product CO (45,720Nm3/h, >98.5%) purified by PSA process would all be used for ethylene glycol production. The project pioneered the comprehensive usage and realized the maximum utilization of low-value raw coke oven gas, and finally transformed the complex raw coke oven gas into effective syngas resources, which enabled the customer effectively utilize 3 billion cubic meters of raw coal gas every year, save 600,000 tons of standard coal, and reduce 600,000 tons of CO2 emissions directly.

In June 2021, PKU Pioneer’s CO separation technology from converter gas passed the evaluation of scientific & technological achievements by the Chinese Society for Metals and was rated at the international advanced level. The technology has been successfully promoted and applied in many large iron & steel mills in recent years and a remarkable result has also been achieved in 2021- PKU Pioneer won the bid for the syngas project of Taiwan's largest steel manufacturer, China Steel Corporation (CSC), which is a demonstration plant built by PKU Pioneer in CSC applying CO purification technology for converter gas. The project is now under intense construction.

Since the implementation of the ultra-low emission policy in China's iron and steel industry, PKU Pioneer has paid high attention to the market demand for BFG fine desulfurization in iron & steel plants. After conducting feasibility studies on desulfurization technology for its gas consumption and emission points in iron & steel mills, PKU Pioneer proposed the targeted blast furnace gas front-end desulfurization solution. In the second half of 2021, PKU Pioneer successively won the bids for the BFG fine desulfurization projects of Hebei Tangyin Iron and Steel Co., Ltd. and Wuhai Baogang Wanteng Iron and Steel Co., Ltd. The blast furnace gas would fully meet the ultra-low emission standards after being treated by the dry desulfurization process without producing any waste liquid, which is a preferred process of fine desulfurization for iron & steel mills in China.

In parallel with fine desulfurization, the integrated desulfurization, denitrification and dust removal technology has also made significant progress in industrial applications. In July 2021, PKU Pioneer's first desulfurization and denitrification exhaust gas disposal & environmental protection project for Sichuan Glass Fiber Co. Ltd. successfully passed the acceptance. In this project, PKU Pioneer achieved the one-step reduction of HCl, HF, SOx, NOx, particulate matter and other pollutants in the flue gas, helping the customer’s fiberglass production line easily and efficiently meet the ultra-low emission standards for exhaust gas.

In terms of purification and utilization of yellow phosphorus tail gas, the tail gas dephosphorization pilot plant established by PKU Pioneer in a power plant has been running for one and a half years with stable performance and the total phosphorus in purified yellow phosphorus tail gas is below 1mg/m3. Combined with the mature desulfurization process, the purified tail gas can be used for power generation or chemical synthesis, which is an economical and feasible process for yellow phosphorus manufacturers to achieve efficient utilization of phosphorus off-gas. In August 2021, PKU Pioneer's“Complete Set of Continuous Catalytic Oxidation and Purification Plant for Yellow Phosphorus Tail Gas - DePOx" was selected into the First (Set of) Major Technical Equipment Catalog in Beijing. Up to now, PKU Pioneer has successfully implemented two yellow phosphorus tail gas dephosphorization and purification projects, which will greatly improve the economic benefits of the customers and help them get rid of the dilemma of “dual control” policies of energy consumption. Therefore, the two demonstration projects have attracted great attention from the yellow phosphorus industry.

For more than 20 years, PKU Pioneer has been keeping our feet on the ground and implementing steady management for business development. Relying on strong R&D strength, advanced technologies, excellent engineering projects, steady administration, efficient management and honest behaviors, PKU Pioneer has expanded larger market and become the hidden champion in various segmented industries, helping promote the high-quality development of VPSA & PSA gas separation industry. Looking ahead to 2022, the external environment is getting more and more complicated and serious. PKU Pioneer will face up to the challenges to seize more opportunities, seek progress while maintaining stability and bravely explore the journey in the new development pattern.