At present, the conventional drying equipment needed in the domestic market and the main drying equipment needed in the international market can basically be manufactured by ourselves. This indicates that the history of drying equipment import based in China has ended. But there are still some problems and worries. According to the problems China general machinery drying equipment industry association predicted that in the next few years, the amount of chemical industry drying equipment demand in China will reach 3000 units (sets); pharmaceutical drying equipment annual demand will reach 3000 units (sets); the drying apparatus for annual demand of agriculture, food and light industry is expected to reach 5000 units (sets). At present, China's drying equipment in the domestic market has reached more than 80%.
  Is expected to "fifteen" period, the domestic drying equipment share will reach more than 90% in the domestic market. At present, the existing problems are highlighted in two aspects: the regional concentration and the poor technological innovation ability. Most of the production enterprises in China's drying equipment industry are derived from the early business of the industry. The location is relatively centralized, and the personnel structure is seriously defective. So far, enterprises are mainly distributed in Jiangsu, Zhejiang, Shanghai, Liaoning and Hefei. The enterprises in these regions account for almost 50% of the total industry, and this is in sharp contrast. Fierce competition in the industry, some enterprises pay attention to immediate interests, lack of systematic development ideas, and improve the overall quality slowly, which seriously hampers the normal development of the industry. The capacity of technological development is not strong. After the reform and opening up, especially in recent years, the potential of China's economic growth has been effectively released. The relationship between supply and demand has changed fundamentally, and the buyer's market has initially formed. Under the pressure of the buyer's market, some enterprises are catching up with the market rather than looking for and developing the market. The energy of the enterprise is concentrated on the products with more market demand and mature products in the near future. Therefore, in the oven, vibrating fluidized bed, spray and other products, the manufacturers are more concentrated, and the competition is very fierce. In the industry, the enterprises engaged in the development of dry equipment are less, the improvement of new products and the introduction of new products are mainly based on mutual imitation. It is suggested to adopt advanced technology and improve the quality of products. There is still a gap between the technology of drying equipment in China and the same industry in the developed countries in the world.
  Present low technology products in the market, the dominant. After China's entry into the WTO, more and more international counterparts will enter the domestic market. With the intensification of international competition, we will face huge pressure of competition. Drying equipment manufacturers in the world famous, such as Denmark, Japan Nehru Group Corporation Okawara have been set up in China branch, rob Chinese market. With the acceleration of the process of economic globalization, more MNCs will transfer their targets to the Chinese market. The increasingly fierce competition requires our enterprises to improve the quality of products through technological progress, foreign advanced technology and independent innovation. The idea of product development should be based on the large-scale equipment, the automation of control, the quality of surface treatment and the selection of corrosion resistant materials. We should develop multi-functional combination machines to promote the life cycle of products. Industry associations should organize enterprises to participate in international technical exchanges, absorb the latest technological achievements, and accelerate the improvement of the technical level of the whole industry. The adjustment of enterprise structure, cultivate enterprise core competitive ability of China's enterprises is characterized by little, drying industry is not strong, not only, not fine, the number and the overall quality is not high; the majority of enterprise management is backward, did not achieve economies of scale should be appropriate, guidance and coordination by industry associations, change the development status of the blind. The three relatively concentrated enterprises in Jiangsu, Zhejiang and Shanghai can consider transferring to the central and western regions by means of joint venture, cooperation and acquisition, looking for wider space for enterprises to survive and develop. Enterprises in the industry must take the road of strong combination, and cultivate some large companies and business groups with strong technical strength, famous brands and independent intellectual property rights in the industry. To form its own special products and special services. The innovation ability of China's drying equipment manufacturers is relatively low, and there are few enterprises that can launch independent intellectual property rights of new technologies and products, which is an important reason for the slow development of dry technology in China.
  At present, the research and development of our country by dozens of universities and research units engaged in drying technology, distributed in China, but most of the results did not the four corners of the world, knowledge effectively into practical productive forces. To become the main body of technological innovation, enterprises should directly associate with these universities and research institutes in various forms, so as to make rational allocation and utilization of resources, and effectively cultivate and develop innovative capabilities of enterprises.
Prospects in the future focus of competition of drying equipment industry will mainly focus on product quality, technical level, customer service service and price. On the type of drying equipment, hot air will be used to heat atmospheric drying equipment and vacuum drying equipment. Other users, such as far-infrared drying equipment, microwave drying equipment and other special fields, will also gradually expand the number of applications. In food, medicine drying, will increase the demand for equipment of large size vacuum freeze drying equipment, has the function of combination (such as granulation, drying and filtering and drying) equipment demand will also increase, high automatic drying equipment will be popular in some application areas. In addition, the appearance quality of drying equipment will be paid more and more attention. The corrosion resistance and reliable performance of corrosive material drying equipment will be paid special attention to by users.
  At present, drying equipment industry in China has entered a mature stage of development, to better meet the actual needs of users in various fields, and in the price of the same products abroad only 1/3, which makes China's drying equipment has obvious price advantage in the market competition than imported equipment; on the other hand, because the drying equipment volume is larger, the majority also relates to the site installation, commissioning and customer service service work, so the domestic user, the domestic equipment than imported equipment more convenient. As far as the international market is concerned, after China's entry into the WTO, it is more conducive to the expansion of the export of dry equipment. At present, the main export products of our country drying equipment, vacuum drying equipment, vibration drying equipment, small grain, food and agriculture products drying equipment, the annual export volume of more than 100, exports are the main areas of Southeast Asia and other developing countries, and has opened the door of the market in Europe and america. At present, the proportion of dry products exported to China accounts for less than 5% of the total domestic drying equipment. Experts predict that during the fifteen period, the proportion of dry products exported to domestic drying equipment will reach more than 10%. In the international competition, the main competitors of China's dry equipment manufacturers are Denmark, Switzerland, Britain, Germany, the United States and Japan. Compared with competitors, the advantage of China's drying equipment is low price. The main shortcoming is that the level of automatic control, appearance quality, completeness and functional combination need further improvement.
  Therefore, the domestic drying equipment manufacturing enterprises should make full use of China WTO opportunities, strengthen technical exchanges with foreign countries, learn from foreign advanced drying equipment long, improve the degree, appearance quality, complete and functional combination of China's drying equipment automation control, narrowing the gap with foreign products, improve trust products in China in our country, the drying equipment not only in the domestic market, but also occupy a space for one person in foreign markets. The variety of drying equipment has been increasing and the scope of application is expanding. The level and quality of products are rapidly improving, and the market competitiveness is increasing. In particular, our government has introduced all relevant policies to support product export, creating excellent external conditions for domestic drying equipment manufacturers, which indicates that our drying equipment has good prospects for development. Common knowledge of drying equipment: common dryer types include spray dryer, air dryer, fluidized bed dryer, fluidized bed spray granulation drier and so on. Spray drying is one of the fastest growing equipment in the drying equipment.
  There are 3 kinds of conventional atomization method: rotary atomization, atomization and atomization pressure. The characteristics of rotary atomizing spray drying are single machine production capacity (spray volume up to 200t/h), easy control of feed volume, large operation flexibility and wide application. The characteristic of the spray drying of the pressure atomizer is that it can make the coarse particles, and the maintenance is convenient. Because the nozzle hole is very small, easy to block, so the material must be strictly filtered. The nozzle hole is easy to wear and must be made of wear-resistant material. The pressure nozzle also has a new structure called pressure airflow nozzle. Its characteristic is that the center is the pressure nozzle, and the ambient air gap is airflow nozzle. The atomization is divided into two stages: the pressure nozzle first forms the liquid film, and the liquid film is atomized by the air flow second times, making the droplet finer. The advantages of this type of nozzles are:
(1) to adjust the pressure of compressed air, the diameter of the droplet can be adjusted, and the operation is simple.
(2) large output and high viscosity liquid can also be atomized into fine droplets, and 3 if compressed air is discontinued, the original pressure nozzle can also be used.
  Atomizer is mainly used for laboratory and pilot plant, its power consumption. The first two atomizers can not be atomized, and the atomizer may be atomized by the airflow atomizer. The high viscosity paste, paste and filter cake materials can be atomized by three fluid nozzles. The airflow drying machine is mature, and it can be designed directly if there are operating data. At present, a number of dry equipment manufacturers can provide this type of equipment. A fluidized bed dryer for a fluidized bed dryer is only second to the spray dryer. It is divided into a fluidized bed dryer with an agitator and a fluidized bed dryer with internal heat transfer. When fluidized bed drying is used to dry powder or granular materials that are easy to unite or agglomerate, fluidization will be difficult in larger water feeding section. In this way, agitator is added to the feed section to eliminate agglomeration problem and achieve normal fluidization. The latter is a combination of conduction heat transfer and convection heat transfer. When the hot air volume used for normal fluidized state is far from meeting the heat required for drying, the internal heat exchanger can be used to supply part or most of the heat. This operation mode can significantly save energy. The internal heat exchanger has many forms. The fluidized bed is also often used for combined dry second and third stage dryers. Vibration is applied to an ordinary fluidized bed, called a vibrated fluidized bed. Vibration fluidization can be divided into 2 types from the source of vibration: one is driven by a vibrating motor, and the other is to make the spring vibrate by the common motor. When the size of the vibrated fluidized bed is large, the latter has a better effect. The fluidized bed spray granulation dryer is an organic combination of fluidization technology, atomization technology and drying technology three. It is to spray the atomized liquid to the fluidized bed, and make the seed grow and dry continuously, to be grown to the specified size out of the discharge device. The equipment is small in size, large in production capacity and can make large particles. The industrial application of the equipment has been increasing.