The products of this project are drying technology, belonging to the category of Engineering Thermophysics, widely used in pharmaceutical, fine chemical, biochemical and biological industry with easy oxidation, drying and solvent recovery machine containing solvent liquid material, with high efficiency and energy saving, emission reduction and low carbon economy and practical use. The application of nitrogen project innovation for heat conduction medium, while the use of closed-circuit circulation technology, combined with the spray drying of continuous production, the maximum solution containing organic solvent liquid materials, technology and materials containing oxidation drying difficult, at the same time in the continuous drying process, the cooling technology, to achieve the recycling of organic solvents use in industrial production base to achieve emission reduction, show the resource utilization maximization of circular economy. This project adopts intelligent control and self diagnosis function at the same time. On the basis of improving the accuracy of equipment control, it also highlights the degree of automatic control of electro mechanical gasification, and achieves the convenient, fast and modern production management level. The implementation of the project provides energy saving and emission reduction infrastructure for the above industry's economic development, so as to optimize product structure, adjust the way of economic development, and provide basic equipment and technology support for new product development.
  As China's economic development and rapid, research and new product development, the related industries of new technology, the demand for the new drying technology is increasing, however, China's current drying technology progress, the overall technical level is still lagging behind, it is difficult to meet the relevant industry due to the economic development and product optimization the structure and the development of new demand. According to the market dynamic investigation and related information, it is indicated that most of the pharmaceutical, biochemical and fine chemical industries in China are still using vacuum sealing and heating operation to produce liquid materials that are easy to oxidise and contain organic solvents. In vacuum drying, low boiling point (heating temperature reached 90 degrees in -0.085Mpa vacuum state, when wet, even gasification) and antioxidant (vacuum drying with jacket heating mode, the heat transfer of gas without direct contact with the material, avoid easily oxidizable materials in the drying process by oxidative damage caused by product the advantages of quality problems). Therefore, the vacuum drying technology is still widely used in the related industries. However, vacuum drying is to produce a gap feeding amount, so its production capacity has been greatly restricted, and gap production is difficult to achieve on the recovery of organic solvents in the drying process, thus causing serious environmental pollution, therefore, the vacuum drying technology is difficult to meet the need of optimization of product structure and the new product research and development and production of modern industry.
  With the progress of the study on drying technology, drying technology in China has been closed cycle spray, the core technology of this technique is to centrifugal spray drying to form, realize the production of suspension liquid material, but based on centrifugal atomizing disk radial speed slow speed and handling (spray atomizing disk volume has a direct relationship, therefore since the mature operation speed of centrifugal atomizing disk 18000r/pm) technology factors, therefore, the liquid centrifugal spray solid content is limited to the range of 10~30%. The atomization of low solid content, not only affects the production capacity, but also increased the dry production of energy consumption, the average drying temperature is over 250 DEG C, the heating temperature to obtain the quality of finished powder (due to atomization of solid content is low, so the dried product is powder structure). Therefore, the high temperature heating not only increases the energy consumption, but also has a great accident potential for the drying of liquid materials containing organic solvents. In addition, the centrifugal spray due to the centrifugal effect, extremely easy to cause the droplet splash adhered to the drying tower wall, causing coke wall sticking phenomenon is extremely serious, and the technology does not have the function of solvent recovery, there are still two pollution problems, therefore, the centrifugal spray technology can not meet the closed cycle of high solid content, thick and sticky the shape of suspension liquid material, and have dry production of organic solvent, need to be further discussed.