Vacuum low-temperature drying technology has a long way to go to national strategic development

[ China Agricultural Machinery Industry News ] Grain drying mechanization is an important part of agricultural mechanization. Mechanization of grain drying can assist farmers to immediately harvest fresh, low-temperature and quick-drying cereals that have been planted for half a year. It not only solves the problem of mildew of cereals, but also produces the problem of aflatoxin. It is important to take care of the health of the people throughout the country so that everyone can eat fresh, white, healthy and healthy good quality rice, and at the same time solve the aging of the rural population, manpower, sunburn The problem of insufficient field. The National Security Law clearly proposes a sound food security system, and food security has become an important part of the national security strategy. The "Proposal of the Central Committee of the Communist Party of China on Formulating the Thirteenth Five-Year Plan for National Economic and Social Development" points out that it is necessary to adhere to a strict system of cultivated land protection, adhere to the red line of cultivated land, and implement the strategy of "grabbing grain on the ground and storing grain in technology" to improve food. Capacity to ensure that the grain is basically self-sufficient and the rations are safe!

Vacuum low-temperature drying technology has a long way to go to national strategic development

When people enjoy the economic benefits of drying as a technical means in the production enterprise, they must take into account the economic and social costs of achieving economic benefits. The economic cost is manifested in energy consumption, and the social cost is manifested as causing environmental air pollution. The drying technology has two meanings for the pollution of the ambient air. One is the huge energy consumption. The other is that the liquid phase water in the dried material often contains other impurities to varying degrees during the drying process. When the water vapor is discharged, It is also emitted as a small solid particle in the atmosphere.

Nowadays, the hot air drying equipment on the market has a large amount of moisture emission pollution. The dryer using the coal-fired furnace will generate a large amount of PM2.5 fine particles, causing air pollution, endangering human health, and then forming acid rain, acidifying the soil. Polluted irrigation water source and drinking water; the factory where the coal-fired furnace is located often has a dirty environment and is prone to fire; the temperature of coal is difficult to control, and crops with a small economic value often cause grain to burst and break rice due to uncontrollable temperature; The quality of food quality and drying technology, together to promote energy conservation and emission reduction, has a long way to go!

The heat efficiency of the circulating hot air grain dryer and the hot air drying tower is low, and the hot air is a one-time use rate. The moisture is directly discharged into the atmosphere, and the heat energy cannot be recovered, resulting in waste of energy. Loss of heat wastes energy, while entraining a large amount of dust impurities falling in the air, causing dust pollution and causing harm to human health. Therefore, environmental efficiency cannot be ignored.

The dryer market is very chaotic now, most of them are simple copying and copying, playing price wars, not better than who is, compared to who is the price, regardless of the quality of service, no sense of the times, not updated Can only die! Modern enterprises have innovation, winning the market with high-tech and own brands! Under the current situation of macroeconomic regulation of land circulation, the innovation of vacuum low-temperature grain drying is the next economic growth explosion point, which can be used as an adjustment agriculture. Equipment for the industrial structure of the equipment.

The era of low quality and low price in China's grain drying equipment industry is coming to an end. The curtain of professionalization, specialization and refinement has been opened. The stage of comprehensive upgrading of grain drying equipment technology has begun. This stage will not be smooth and improve the technical level. It is a hundred times more difficult than imitation, so it must be awkward, and it is also because of the bitterness of the grain drying equipment in the past ten years. It is too easy for the dry industry to stand out, and because there will be a large number of enterprises will be eliminated at this stage. This is the real symbol of the rebirth of the industry, it will be very very painful, we must adapt, this helplessness before being pushed to the cliff is the real good situation! The way out for grain drying equipment enterprises lies in: holding the broken arm of the strong man Determined to recognize the new historical mission given to this era, there will be only one development logic for food drying equipment enterprises in the future: how much wealth you can create and how much wealth you can acquire.

At the helm of the enterprise, you need to know what products the company sells next year, what are the profitable products listed in three years, and what are the strategic products after five years! The veritable innovative companies will not only observe the current trend changes in real time, they will also Think further: what new problems these trends will lead to. These problems may not have appeared yet, but a creative company will be far-sighted and proactive. If a company can predict the problems and troubles that will arise, and find a solution in advance, it can be regarded as the leader of the industry and has a strong competitive advantage.

“Yuanhong Dry” believes that designers should never wait for the market to give you the demand when positioning product development. As a technology prospect, you need to actively discover the direction of product technology advancement, and the design should follow the concept of complexity and simplicity. The operation should cater to the ease of use of the guests. “Yuanhong Drying” focuses on the continuous innovation of the process. The step of reducing the cost begins with the design of the vacuum drying tower. “Yuanhong Drying” follows a core principle when designing its own vacuum drying tower: simple. The simple design ensures both reliability and cost. Innovative tower heat pipe heat exchange heating, vacuum low temperature drying improves the grain drying quality, energy saving and environmental protection is a green and dry.

"The threshold is low, the standard is old" is the acquired malnutrition in the dry equipment manufacturing industry. The era of low quality and low price in China's drying equipment industry is coming to an end. The curtain of professionalism, specialization and refinement has been opened, and the grain drying machinery has been opened. Energy efficiency limit value and energy efficiency rating are the watershed of the next development trend of grain drying equipment! The stage of comprehensive upgrading of grain drying equipment product technology has begun, energy saving and emission reduction is the goal of grain drying equipment development, and the future drying machinery should be able to The development of multi-fuel drying direction improves the productivity and quality of dried food.

For enterprises, overcapacity is not terrible, as long as we have innovation, competitiveness, and others. Technological innovation, the world! The losers only go to competition, and entrepreneurs should choose monopoly. From 0 to 1, or from scratch, it means that companies should be good at creating and innovating, forming barriers through technology, network effects, economies of scale, brands, etc., thus achieving a qualitative vertical level crossing, thereby opening up only one Its own blue ocean market has become the only one in this market. Such a monopoly is enough for enterprises to enjoy rich profits.

During the low-temperature drying of grain vacuum, liquid water vaporization has two modes: axis evaporation and boiling. The vaporization rate of water at boiling is much faster than the vaporization rate at the time of evaporation, and the evaporation of water into steam can be carried out at any temperature. The water boils into steam and can only be carried out at a specific temperature, but when the pressure is lowered, the boiling point of the water also decreases. For example, at a pressure of 19.6 kPa, the boiling point of water can be reduced to 60 °C. The vacuum dryer supplies a heat source under vacuum, and supplies sufficient heat to the grain through heat transfer such as heat conduction and heat radiation to simultaneously evaporate and boil, and accelerate the vaporization speed. At the same time, the vacuum is quickly extracted and vaporized, and a negative pressure state is formed around the grain particles. A large humidity gradient is formed between the inner and outer layers of the grain and between the surface and the surrounding medium, which accelerates the vaporization speed and achieves rapid drying. purpose. The low-temperature drying process of grain vacuum is affected by factors such as heating mode, heating temperature, vacuum degree, coolant temperature, type of grain and initial temperature, and the amount of pressing force. Usually, heat supply has heat conduction, heat radiation and a combination of the two. Three ways.