At present, the domestic market needs the conventional drying equipment, as well as the international market needs the main drying equipment, China can basically make their own manufacturing, which shows that China's drying equipment to import-oriented history has ended. But there are still some problems and worries. Existing problems According to China General Machinery Drying Equipment Industry Association predicted that the next few years, China's chemical industry demand for drying equipment will reach 3,000 (sets) or so; pharmaceutical drying equipment, the annual demand will reach 3,000 (sets) around; agriculture and forestry , Grain, light industry and other industries with the annual demand for drying equipment is expected to reach 5,000 (sets) around. At present, China's drying equipment in the domestic market share has reached more than 80%.
Expected "15" period, domestic drying equipment in the domestic market share will reach more than 90%. At present, the existing problems highlight the performance of regional concentration and technological innovation is not strong two aspects. Distribution of enterprises concentrated in China's drying equipment industry, most of the production enterprises in the industry on the basis of early enterprises gradually derived, the relative concentration of geographical location, staff structure there are serious flaws. So far, enterprises are mainly distributed in the river, Zhejiang, Shanghai, Liao, black, these areas of the business almost accounted for 50% of the total industry, and in sharp contrast to this, there are still some parts of our country Drying equipment manufacturing enterprises. Competition within the industry, some companies focus on immediate interests, the lack of systematic development ideas, the overall quality of the slow, seriously hindered the normal development of the industry. After the reform and opening up, especially in recent years, the potential of China's economic growth has been effectively released, the shortage of the formation of supply and demand of economic relations has undergone a fundamental change in the initial formation of the buyer's market. Under the pressure of the buyer's market, some companies are pursuing the market rather than looking for and opening up the market, the enterprise's focus on the recent market demand for more mature products. Therefore, in the oven, vibrating fluidized bed, spray and other products, the manufacturer is more concentrated, the competition is fierce. The industry engaged in the development of dry equipment, fewer enterprises, the improvement of new products and new products mainly rely on the imitation of each other. Development of the proposed use of advanced technology to enhance product quality China's drying equipment technology and the world's developed countries compared to the same industry there is still a certain gap.
Currently in the market, low-tech products dominate. China's accession to the WTO, there will be more international counterparts to enter the domestic market, with the international competition continues to intensify, we will face enormous competitive pressure. The world's leading manufacturers of drying equipment, such as the Danish Nile Group, Japan's Okawa original Co., Ltd. have set up branch offices in China, snatch the Chinese market. With the acceleration of the process of economic globalization, more multinational companies will shift the target to the Chinese market. Increasing competition requires our business through technological progress, absorbing foreign advanced technology, independent innovation to improve product quality. Product development ideas to the equipment in the large-scale, control the degree of automation, equipment, surface treatment quality, corrosion-resistant materials used to work hard, the development of multi-functional combination machine, to promote the product's life cycle continues to extend. Industry associations to organize enterprises to participate in international technical exchanges, absorb the latest technological achievements, accelerate the industry to improve the technical level. Adjust the enterprise structure, cultivate the core competitiveness of enterprises China's dry industry is characterized by small, not strong, not specialized, not fine, the number of large and overall quality is not high; most business management backward, did not meet the appropriate economies of scale, To guide and coordinate, change the situation of blind development. Jiang, Zhejiang and Shanghai relatively concentrated enterprises, you can consider the use of joint ventures, cooperation, the acquisition of the way to the central and western regions to move, looking for a broader business survival and development space. Industry enterprises to go between the strong combination of the road, in the industry to cultivate some of the strength of technology, with well-known brands and independent intellectual property rights of large companies, enterprise groups. To form their own characteristics of products and services. China's drying equipment manufacturing enterprises to lower the ability to innovate, to launch independent intellectual property rights of new technologies, new products, few companies, which is China's slow development of dry technology an important reason.
At present, there are dozens of colleges and universities in China, scientific research units engaged in the development of dry technology research, distributed in our north and south, but most of the knowledge and results are not effectively transformed into real productive forces. Enterprises should become the main body of technological innovation, should be directly with these colleges and universities and scientific research units in various forms of joint, so that resources can be a reasonable allocation and use, effectively cultivate and develop the enterprise's innovation ability.
Prospects The future of the drying equipment industry will focus mainly on product quality, technical level, after-sales service and price. In the drying equipment type, will be hot air heating equipment, vacuum drying equipment, other such as far infrared drying equipment, microwave drying equipment and other special areas of the user will gradually expand the number of applications. In the case of food and drug drying, the demand for larger equipment in vacuum freeze-drying equipment will increase, and the demand for functional combinations (such as granulation-drying, drying-filtration) will also increase, and the high automation drying equipment In some applications will be welcome. In addition, the appearance of drying equipment will be more and more attention to the quality of corrosive material drying equipment, corrosion resistance and reliable performance, will be of particular concern to users.
At present, China's drying equipment industry has begun to enter a more mature stage of development, to better meet the actual needs of users in various fields, and only the same price in foreign products 1/3, which makes our drying equipment in the market competition than Imported equipment has a clear price advantage; the other hand, due to the larger size of drying equipment, most also involved in the field installation, commissioning and after-sales service work, so for domestic users, the choice of domestic equipment is more convenient to use imported equipment. On the international market, China's accession to the WTO, more conducive to expanding exports of drying equipment. At present, the main export products of drying equipment in China are vacuum drying equipment, vibration drying equipment, small and medium grain food, food and agricultural and rural products drying equipment, the annual export volume of more than 100, the main export areas are Southeast Asia and other developing countries, and Has opened the door to the European and American markets. At present, China's drying equipment exports accounted for less than 5% of the total amount of domestic drying equipment, experts expect "15" during the drying equipment export products in the proportion of domestic drying equipment will reach more than 10%. In the international competition, China's drying equipment manufacturers are the main competitors are Denmark, Switzerland, Britain, Germany, the United States and Japan. Compared with competitors, China's drying equipment is the advantage of low prices, the main lies in the product of the degree of automation control, appearance quality, complete sets of features and functional combination to be further improved.
Therefore, the domestic drying equipment manufacturers should take full advantage of China's accession to WTO opportunities to strengthen the technical exchanges with foreign countries, learn from foreign advanced drying equipment, speed up the improvement of China's drying equipment, automation control, appearance quality, complete sets and functional combination, Narrow the gap with foreign products, improve our products in the user's trust, so that China's drying equipment not only in the domestic market, but also in foreign markets can occupy a place. China has now produced a growing variety of drying equipment, the scope of application continues to expand, product level and quality is rapidly improving, the market competitiveness is growing. In particular, the Chinese government has introduced policies to support the export of products for the domestic drying equipment manufacturing enterprises to create an excellent external conditions, which shows that China's development prospects of dry equipment is good. Drying equipment common sense: common types of dryers before the common types of dryers are spray dryer, air dryer, fluidized bed dryer, fluidized bed spray granulation dryer. Spray Dryer Spray Drying is one of the fastest growing equipment in drying equipment.
There are three conventional atomization methods: spin atomization, pressure atomization and airflow atomization. Rotary atomization spray drying is characterized by stand-alone production capacity (spray up to 200t / h), easy to control the amount of feed, flexible operation, the application of a wide range. Pressure sprayer spray drying is characterized by the ability to produce coarse particles, easy maintenance. As the nozzle hole is small, easy to plug, so the material must be strictly filtered. The nozzle hole is easy to wear and must be made of abrasion resistant material. Pressure-type nozzles also have a new structure called pressure-air flow nozzles. Its characteristic is the center of the pressure nozzle, the surrounding environment for the air jet nozzle. The atomization is divided into two stages: the pressure nozzle is first formed into a liquid film, which is atomized by the second time to make the droplets drier. The advantages of this type of nozzle are:
(1) adjust the pressure of compressed air, you can adjust the droplet diameter, the operation is simple;
(2) large output, high viscosity of the material, can also be atomized into fine droplets; 3 if the use of compressed air, the original pressure nozzle can also be used.
Airflow atomizer is mainly used in laboratory and intermediate factory, its power consumption. The first two nebulizers can not atomize the material, the use of airflow atomizer may be atomized. High viscosity pastes, pastes and filter cake materials can be atomized with a three-fluid nozzle. Air dryer Drying technology is mature, if the operating data, you can directly design. At present, there are many drying equipment manufacturers can provide this type of equipment. Fluidized bed dryer The fluidized bed dryer is second only to the spray dryer. A fluidized bed dryer equipped with a stirrer at a feeding site, and a fluidized bed dryer having an internal heat exchange. When the fluidized bed is easy to agglomerate or agglomerate the powder and material, the fluidized layer will have the difficulty of fluidization. At this time, the agitator is set in the feeding section to eliminate the agglomeration problem and can reach the normal flow The The latter is a combination of conduction heat transfer and convective heat transfer. When the amount of hot air used in the normal fluidization state is far from sufficient for the heat required for drying, the internal heat exchanger is used to supply part or most of the heat Kind of operation can be significant energy saving. There are many forms of internal heat exchangers. Fluidized beds are also often used in combination dry and secondary and tertiary driers. Apply vibration to an ordinary fluidized bed, called a vibrating fluidized bed. Vibration fluidization from the source can be divided into two categories: one for the vibration motor drive; the other for the ordinary motor through the excitation box to make the spring vibration. Vibration fluidized bed size is large, the latter effect is better. Fluidized bed spray granulation dryer The process is fluidized technology, atomization technology and drying technology of the three organic combination. It is the atomization of the liquid sprayed to the fluidized seed bed, so that the seeds continue to grow and dry, to be grown to the size of the excretion of the device outside The equipment is small, large production capacity, can produce large particles. The industrial application of the device has been increasing.