A breakthrough was achieved in my newly developed technology for the comprehensive utilization of industrial waste salts

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Breakthrough Achieved in My Innovative Technology for the Comprehensive Utilization of Industrial Waste Salts Author/Source: Shaanxi Petroleum and Chemical Industry Federation Date: 2021-01-15 Clicks: 25 On January 14, the Shaanxi Petroleum and Chemical Industry Federation held a review meeting in Xi’an. Experts present evaluated the \"Feasibility Study Report on the Comprehensive Utilization of Industrial Mixed Salts in the Ordos Dunkai Environmental Protection Technology Project\", prepared by Beijing Petrochemical Engineering Co., Ltd. They deemed that the process technologies used in this project are advanced, the process design is reasonable, and there are significant benefits in terms of energy conservation and emission reduction. The implementation of this project is expected to yield notable environmental, economic, and social benefits, and they recommended accelerating its implementation. This project utilizes the integrated technology for the harmless treatment of industrial waste salts (HDI), which was independently developed by Hangzhou Hydrocarbon Technology Research Co., Ltd. and other companies. “In response to the technical challenges faced in the treatment of industrial waste salts at the current stage, we have developed a comprehensive integrated technology for the harmless treatment of industrial waste salts through research on formulations for waste salt solidifiers. ”Li Dapeng, director of the Expert Technical Committee for Hydrocarbon Technology in Hangzhou, explained that HDI technology is a domestic innovation. Its core lies in the use of high-rate particle circulation and rapid heat dispersion techniques; at a temperature of around 1200°C, along with the help of high-activity waste salt conversion agents, the soluble salts and heavy metal components in the waste salts react efficiently with the active silicon and aluminum species in the reaction system, resulting in glassy phases and mineral crystal products with stable lattice structures. Through efficient and harmless conversion using HDI technology, the TDS (total dissolved solids) components in industrial waste salts can be transformed, on a millisecond timescale, into inert glassy mineralized products that are harmless to the environment; the glass phase constitutes over 90% of these products, which can be used as proppants for oil and gas fracturing as well as in construction materials. It features high technical integration, strong adaptability to raw materials, low investment in equipment, and the ability to operate stably over long periods. Moreover, it generates no wastewater or solid waste, with only a small amount of exhaust gas produced. At present, this technology has completed industrial pilot studies and been verified in industrial installations; it is safe and reliable, and ready for industrial application. The expert group, headed by Liu Zhongwen, a professor at Shaanxi Normal University, unanimously approved the feasibility study report. They deemed that the project features advanced technological concepts, a rational process design, and significant energy-saving and emission-reduction effects; it also enables the harmless treatment, reduction, and resourceful utilization of industrial miscellaneous salts, which holds great significance for both the country and its people. It features a low capital investment intensity, low operational requirements, and high return on investment; upon implementation, it can generate significant environmental, economic, and social benefits. It is recommended to accelerate the organization and implementation, further improve the feasibility study report, refine the implementation plans for core technologies, expand the ways in which the transformed products can be utilized, and enhance the efficiency of resource utilization. The first industrial plant using HDI technology will be built by Ordos Dunkai Environmental Protection Technology Co., Ltd. Zhou Tianchi, the executive director of the company, said that efforts will be accelerated to complete preliminary tasks such as environmental impact assessments, safety evaluations, and energy assessments, with the aim of starting construction on the project as soon as possible. According to the information provided, the project is located in the South Coal Chemical Industry Base of Dalu Industrial Park in Zhungeer Banner. With a total investment of 119 million yuan, it is capable of processing 56,000 tons of industrial miscellaneous salts per year, and its after-tax internal rate of return amounts to 47.03%. At the meeting, Bian Chaoyuan, deputy general manager of the Xi’an branch of Beijing Petrochemical Engineering Company, the project design firm, delivered a welcome speech, and the relevant technical supervisors provided an introduction to the project. It is understood that industries in China such as coal chemical engineering, petrochemicals, pesticides, pharmaceuticals, fine chemicals, and printing and dyeing generate approximately 15 million tons of industrial waste salts each year. In addition, there are over 25 million tons of industrial waste salts produced from mine dewatering water in coal mining, drilling fluids used in oil and gas extraction, and the pretreatment residues from urban waste incineration. The potential market size is around 120 billion yuan per year, indicating broad market prospects. Technologies for the harmless treatment, reduction, and resource recovery of industrial waste salts represent a global challenge. Currently, the technologies for treating industrial waste salts mainly include rigid safe landfilling, incineration, and co-disposal in cement rotary kilns. However, these methods all have shortcomings to varying degrees, such as complex conversion processes, incomplete transformation, high energy consumption, high equipment investment costs, high operation costs, and difficulties in achieving long-term safe and stable operation.