Color microwave vacuum dryer

Natural pigments are edible pigments obtained from natural resources. The pigments mainly extracted from animal and plant tissues and microorganisms, such as cabbage pigment, morning glory pigment, perilla pigment, purple corn pigment, grape skin pigment, licorice pigment, sorghum pigment, chrysanthemum yellow pigment, safflower red pigment, strawberry pigment, blackberry fruit pigment. Natural pigments not only have the function of coloring food, but also a considerable amount of natural pigments have physiological activity.

Natural pigments are usually obtained after soaking or extraction, and for convenient storage, they need to be dried and processed into powder. Drying has become an important step, and traditional drying methods use high temperatures. Due to the long time, pigment activity and component loss are severe.

The intelligent static microwave vacuum drying equipment adopts advanced microwave energy and vacuum low-temperature drying technology. Through intelligent control, pigments are quickly dried at low temperatures. This low-temperature rapid drying method can obtain high-quality pigments with good pigment solubility and low production costs, making it a truly natural green product.

The WBZ series intelligent static microwave vacuum drying equipment is a comprehensive high-tech drying equipment that combines microwave energy application technology with vacuum drying technology. It solves the global problem of uniform drying of materials in a static state. The equipment has high safety and stability, and is a patented technology of our company. It has the characteristics of low drying temperature, high quality, short time, high efficiency, high yield, and low cost. It is a high-quality, fast low-temperature drying equipment.

The evaporation temperature of water during the drying process of materials is directly related to atmospheric pressure. The lower the atmospheric pressure, the lower the boiling point of water. At one atmosphere, the boiling temperature of water is 100 ℃. When the vacuum degree is less than -0.08MPA, the boiling point of water drops to 30-40 ℃. Therefore, in a vacuum state, materials can be quickly dried at lower temperatures.

Traditional heating is carried out through conduction, convection, and radiation. In a vacuum state, air convection is difficult to carry out. Only by providing thermal energy to the material through conduction can the surface of the dried paste material first dry and harden, forming a 'solid' shell. External heat is difficult to enter, and internal moisture is difficult to remove. Therefore, the drying speed is slow, the efficiency is low, the cycle is long, and the temperature is difficult to control, directly affecting the drying quality of the material.

Microwave vacuum drying is the use of microwave energy to heat materials in a vacuum state. The material generates heat as a whole in the microwave electromagnetic field, with fast heating speed, uniform heat distribution, high heat utilization efficiency, and quick removal of moisture. At the same time, the transmission of microwave energy is not affected in a vacuum state, and the material can be quickly heated by the microwave without energy loss. The material does not form a hard shell during the drying process, and the gas during drying is easily discharged. The drying temperature is low, the speed is fast, and the quality is high. The effective ingredients can be well preserved.

Microwave vacuum drying is a process where the entire material is heated, and the drying process and quality are highly controllable. Therefore, microwave vacuum drying equipment has changed traditional drying technology. It not only has low-temperature, fast, and uniform drying characteristics, but also has high controllability, which can greatly improve drying quality, yield almost 100%, drying speed more than ten times faster, without reducing environmental pollution, greatly improving the economic benefits of enterprises, and becoming an advanced modern drying technology.