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It is imperative for China to explore the development road of drying technology
Release time：2021-7-16 18:4
Drying operation involves a wide range of areas of the national economy. It is not only an indispensable basic production link for a large number of industrial and agricultural products, but also a large energy consumer in China, accounting for about 12% of the total energy consumption of the national economy. In addition, the pollution caused by drying process is often an important source of environmental pollution in China. The progress of drying technology is closely related to the development of the whole national economy.
In the face of severe energy and environmental challenges, China has formulated a medium and long-term energy science and technology development strategy and development plan up to 2020 under the guidance of comprehensive, coordinated and sustainable scientific development concept. The formulation of this energy and environmental development strategy also points out the direction for the development of drying technology in China, and it is imperative to explore a new development path of drying technology.
Compared with other operation links in industrial and agricultural production, the task of energy saving and pollution control in drying process is particularly urgent. First of all, drying operation involves a wide range of fields, and the proportion of drying energy consumption in China is almost half higher than that in the UK, reaching 12%. Secondly, the environmental pollution caused by drying is quite serious. More than three fourths of all kinds of conventional drying equipment are hot air drying, which pollutes the environment seriously. The transformation of coal-fired stove in drying system has become an important issue to be solved.
Improving the energy efficiency of drying process and preventing environmental pollution are complementary. By reducing the energy consumption of 100 million tons of standard coal, more than 64 million tons of CO2 and SO2 emissions can be reduced in China, with significant environmental benefits. Therefore, when exploring the new development path of drying technology, it is necessary to comprehensively consider energy efficiency, environmental protection and product quality, so as to achieve comprehensive, coordinated and sustainable development.
In order to implement the development strategy of high efficiency and green drying, we should first take the resource-saving development road, and change the single extensive drying into the combined and intelligent drying. It is necessary not only to carry out fundamental transformation from the drying process, but also to carry out comprehensive and multi-level energy-saving technical transformation, and vigorously develop the application of renewable energy and industrial waste heat drying technology. From the government level, it is necessary to establish and improve the comprehensive evaluation criteria and industry standards of drying equipment, establish the macro-control and market regulation mechanism, and speed up the upgrading of drying technology.
