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In this context, China's coal chemical industry will use coal gasification as a leader, the energy and chemical industry of the methanol system as the main body, taking into account the development of coal-based oil products, and with industrialization demonstration as the goal, it will focus on the development of key and common technologies and engineering technologies. We will vigorously develop deep processing products of coal chemical industry, extend the industrial chain, and improve the competitiveness of China's coal chemical industry as soon as possible. The specific measures are to promote large-scale coal-water slurry gasification technology and coal-syngas synthesis gas purification technology as soon as possible; develop large-scale pulverized coal gasification technology, coal-to-olefin technology, ultra-large-scale methanol production technology, coal-to-ethylene glycol production technology and coal-based Polygeneration technology.
Coal gasification technology is one of the key technologies for the clean and efficient utilization of coal, and it is also the leading technology for the development of coal chemical industry. Domestically developed multi-nozzle opposed coal-water slurry gasification technology, space furnace pulverized coal gasification technology and multi-nozzle opposed pulverized coal gasification technology, some have successfully achieved industrialization and commercialization promotion, and some have completed pilot tests. Or establish a demonstration device. The promotion of these large coal-water slurry gasification technologies will greatly promote the development of the domestic modern coal chemical industry, and will also provide leading technologies and key technologies for the development of coal indirect liquefaction, integrated gasification combined cycle power generation and coal-based multi-generation technologies. It will also provide technical support for technological transformation and energy conservation and consumption reduction in the domestic chemical fertilizer industry, and advance the technological progress of related industries.
The coal syngas multi-function purification technology adopts the independently developed DJ-1 multifunctional scavenger to hydrolyze hydrolyzed carbonyl sulfide (COS) and hydrocyanic acid (HCN) in coal-derived syngas to easily desorbable sulfides. Hydrogen and ammonia, COS and HCN hydrolysis rates can reach 80%, and has been successfully applied to methanol and gas power generation co-production methanol project. The successful development of this achievement is of great significance for the clean utilization of coal and the protection of the environment.
Coal to olefins is the link between coal chemical industry and petrochemical industry. It not only realizes the diversification of petrochemical raw materials, but also widens the development field of coal chemical industry, realizes partial replacement of petroleum resources, and is the most promising development field of new coal chemical industry.
However, China's coal-to-olefins industry has just started, and its technology is immature. It is still in the demonstration stage. The principle of “first trial, post-development, first demonstration, and later promotion†should be followed. The coal-to-olefin technology should be broken through firstly to build demonstration projects.
The coal gasification-based polygeneration system is an energy system that couples IGCC power generation and coal chemical technology, and is an important solution for comprehensively solving China's energy problems. IGCC polygeneration is also recognized as the most effective method for clean coal utilization in the world. It is an important technical route towards the near zero emission of CO2, and also an important choice for the development of clean coal technology in China.
In the coming period, China's coal gasification-based polygeneration demonstration project will complete the development and verification of related technologies such as large-scale coal gasification, synthesis gas low-pollution heavy-duty gas turbines, liquid product synthesis, system optimization and integration, design, operation, and control. , Liquid product cogeneration, IGCC and other typical systems test and demonstration; Construction of key technology research and development platform and experimental demonstration base to support China's coal-based high-efficiency clean power generation and production of liquid products independent innovation, the formation of IGCC and co-production of key technologies and equipment autonomy The R&D, engineering package and system integration capabilities will eventually form a clean coal technology cluster with core competitiveness.
After nearly 30 years of hard work, China has developed a number of world-leading technologies in the new coal chemical industry. At the same time, it also faces coal gasification technology, lack of adaptability of coal types, coal chemical engineering technology to be urgently demonstrated, and large-scale equipment localization rate. Low, and coal-based polygeneration technologies and carbon-chemical downstream production technologies are in urgent need of development, and water resources and environmental capacity have become constraints.