【Ten Years of Rapid Development in Chemical Engineering Equipment】The zero-discharge treatment technology for desulfurization wastewater, 1819–2023, passed the project completion evaluation

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Happy May Day 2024! Safety first. Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment. **********************【Ten Years of Progress in Chemical Engineering Equipment】Regular updates and summaries are available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Engineering Forum) ***************** On March 24, 2023, the completion review meeting for **Energy Group’s scientific and technological project titled “Research and Engineering Demonstration on Ion Removal and Resource Recovery from Desulfurization Slurry Using IRCT Technology” was successfully held. Based on on-site inspections, the expert panel at the acceptance meeting listened to reports on work progress and research findings, and reviewed the project’s technical documentation and operational status during the meeting. After a series of inquiries and discussions, they formulated their acceptance opinions, unanimously agreeing that the project passed the acceptance criteria. The meeting concluded that this research project can be implemented effectively; the system does not require pre-softening, which reduces the risk of scaling during the high-concentration concentration process. This approach significantly improves the operating conditions of the evaporation section and meets the requirements for highly selective desalination with zero emissions. This technology project was officially approved and launched in February 2021 after receiving approval from the group company. The project’s research team innovatively introduced the \"dialysis concept\" for desulfurization slurry, and developed and studied a brand-new bipolar screening ion-exchange electrodialysis system based on domestic ion membranes. This system is designed to address the technical challenges associated with achieving zero discharge of desulfurization wastewater in power generation enterprises, while also advancing basic research and technological development in the field of desulfurization and desalination. At the same time, based on technical characteristics and operating conditions, equipment such as membrane stacks and membrane frames are designed in an integrated manner to create standardized products based on IRCT technology. The successful completion of this project will further advance the engineering application and commercialization of IRCT technology, effectively solving the problem of the inability to operate the drying stage for zero-discharge treatment of desulfurization wastewater in power plants. It not only fills the gap in low-cost, high-ratio concentration technologies for desulfurization slurry both domestically and internationally, but also addresses the need for low-cost concentration and reduction technologies for high-salt, high-hardness wastewater in other industrial sectors. The greatest advantage of IRCT technology is that, compared to existing zero-emission technologies, it possesses a core competitive edge characterized by \"two advantages and three improvements\". Yiyou features stable operation, a high degree of automation, and simple maintenance ； Eryou features direct operating costs of less than 11 yuan per ton, which is a reduction of over 70% compared to existing technologies; the overall lifecycle cost is reduced by more than 45% ； The three key aspects are the localization of core equipment, the industrialization of proprietary technologies, and the recyclability of concentrated brine, all of which bring significant environmental, social, and economic benefits. To date, this project has applied for 6 invention patents, published 3 scientific papers, established 1 graduate training program, and trained 2 master’s degree candidates, thus creating a new landscape of technological innovation characterized by deep integration of industry, academia, research, and application.