Potassium sorbate drying selection (LPG high-speed centrifugal spray dryer)

Material Description:

Potassium sorbate is a food preservative with broad-spectrum bactericidal properties, and due to its easy availability and relatively low price, it has become the preferred food preservative for many food companies. Sorbic acid and potassium sorbate are recognized as safe and efficient food preservatives by the Food and Agriculture Organization of the United Nations and the World Health Organization. Sorbic acid and its salt compounds have been widely recognized for their low toxicity and low cost. Sorbic acid is a common fatty acid that participates in metabolism in the human body and only produces non-toxic and harmless carbon dioxide and water. It is considered one of the safe ingredients in food. The effect of inhibiting the growth of foodborne microorganisms and preventing food spoilage is excellent. It has no significant impact on the flavor state of food, does not change the characteristics of food, retains the original color, aroma, and most importantly, the toxicity of sorbic acid is only 1/4 of benzoic acid. As a globally recognized safe and non-toxic preservative, sorbic acid is allowed to be used in all countries. Due to the lower solubility of sorbic acid, the food industry often uses more soluble salts of sorbic acid to replace it. Potassium sorbate is an unsaturated fatty acid salt that can participate in normal metabolism in the human body, producing carbon dioxide and water, and is also recognized as one of the safe food ingredients. In addition, the use of potassium sorbate is extremely flexible and can be directly added to food or sprayed for soaking. According to incomplete statistics, the world production of potassium sorbate in 1990 was approximately 20000 tons. The United States, a major consumer of food preservatives, used approximately 7200 tons of potassium sorbate in 1992. Subsequently, the usage of potassium sorbate has been increasing year by year, with 9100 tons in 1995 and 11400 tons in 2000. Sorbic acid can be produced through three methods: the condensation reaction between acetone and crotonaldehyde, the oxidation of sorbitol, and the condensation reaction between succinic acid and crotonaldehyde. However, due to the high production costs of these methods, the most commonly used one is the acetone method. Potassium sorbate is highly regarded by the Food and Agriculture Organization of the United Nations, the World Health Organization, as well as the United States, the United Kingdom, Japan, and some Southeast Asian countries. In recent years, potassium sorbate has become an important food preservative that countries have focused on developing.

Product name: LPG series high-speed centrifugal spray dryer

Overview:

Spray drying is the most widely used process in liquid forming and drying industries. It is most suitable for generating powder and granular solid products from solution, lotion, suspension and paste liquid raw materials. Therefore, spray drying is a very ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet accurate standards.

Principle:

After filtering and heating, the air enters the top air distributor of the dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer at the top of the tower body, and (rotating) spray into extremely fine droplets, which flow in parallel with hot air and can be dried into finished products in a very short time. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is discharged by the fan.

Features:

Fast drying speed, the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95% -98% of the water can be evaporated instantly, and the drying time only takes a few seconds, making it particularly suitable for drying heat sensitive materials.

The product has good uniformity, fluidity, solubility, high purity, and good quality.

The production process is simplified and the operation control is convenient. For liquids with a moisture content of 40-60% (up to 90% for special materials), they can be dried into powder products in one go without the need for crushing and screening, reducing production processes and improving product purity. The particle size, bulk density, and moisture content of the product can be adjusted within a certain range by changing the operating conditions, making control and management very convenient.

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