The reporter learned from the six institutes of the China Aerospace Science and Technology Group that the plasma slag gasification and solid waste treatment demonstration project independently developed by the Institute of Aerospace Science and Technology of China has continuously and stably operated in Yancheng, Jiangsu Province for more than 30 days. The project uses a plasma gasification melting process. The incineration rate of organic pollutants can reach 99.99%. The 'ultimate technology' plasma gasification and melting technology, which marks the disposal of hazardous wastes, has officially entered the engineering application stage in China.
Plasma gasification and melting process is a new generation of hazardous waste treatment methods. It is a hazardous waste treatment method with high technical content and outstanding effects in the world. In China, plasma technology has been successfully applied to military and other fields.
In the process of promoting military-civilian integration, the six institutes of the Aerospace Science and Technology Group applied liquid rocket engine plasma ignition, combustion, and heat transfer technologies to the hazardous waste treatment field to form a plasma gasification melting system to achieve slag and fly slag on the rotary kiln. The harmless treatment of various hazardous wastes including ash, medical waste, municipal solid waste, electronic waste, and industrial waste, as well as general industrial solid waste, provides a solution to cracking secondary pollution caused by incineration.
At present, the system has achieved the goal of harmless, solid waste reduction and recycling. The treated residue is only 20% before treatment. A part of the final product is converted into combustible gas, and the other part is cooled to form high-quality glass slag. , Can be used as roadbed, building materials.
The flue gas generated by the system can achieve ultra-low emissions through the corresponding purification process, and it is in line with the world's most stringent EU 2010 standards, and it realizes the management from the simple end of hazardous waste, and expands into the integration of prevention and control of secondary pollution and efficient use of resources. Process control mode.
It is reported that the plasma gasification and melting processing system built this time, among which the key core equipments are all independently developed by the six aeronautics institutes, and all technical indicators have reached the international advanced level. The plasma torch has greatly improved the use of air as working gas. Electrode life, reaching 600 hours or more, 3 times higher than the domestic average, thermal efficiency 80%, higher than the domestic average of 20%, the cost of use is lower than the domestic average of one-third. Another core equipment plasma gasification In the design of the furnace, relying on the advantages of liquid rocket engine simulation simulation technology and reasonable structural layout, can achieve a reasonable combination of organic gasification and inorganic melting, organic pollutants burning rate of 99.99%.
Source: Xinhuanet