Working principle and application of rotary cooking pot

Rotary cooking pot is a heat source with a certain pressure of steam or electric heating. The cooking pot has the characteristics of large heating area, high thermal efficiency, uniform heating, short boiling time of liquid material and easy control of heating temperature. The inner pot of the cooking pot is made of acid-resistant and heat-resistant stainless steel. It is equipped with a pressure gauge and a safety valve. It has beautiful appearance, easy installation, convenient operation, safety and reliability.

First, the working principle of the rotary cooking pot

Usually, the pot is used to fill the pot to increase the amount of pot, and the steam pot can also remove the air in the wood chips, which is beneficial to the penetration of the liquid. The time required for liquid feeding is short, and the liquid feeding amount should be accurate. Generally, the liquid feeding amount of the vertical pot is 45-60% of the pot solution. When the white liquor and the black liquor recovered by alkali are mixed into the cooking liquid, the white liquid is generally sent first. After sending black liquor. The heating operation is mainly to pass the steam to raise the temperature of the material and the liquid in the digester to the temperature required for cooking. As the temperature increases, the penetration of the chemical solution is accelerated, and the progress of the chemical reaction is accelerated. The heating time is generally 1 to 2 hours. During the heating process, a small deflation is usually performed when the temperature is raised to 125 to 130. Its purpose is to remove air from the digester and volatile substances such as turpentine. Eliminate the false pressure in the pot and reduce the oxidation of cellulose. The small deflation operation is to stop the ventilation when the pressure in the pot rises to 0.2-0.3 MPa, and open the bleed valve to deflate. When the pressure in the pot drops to 0.05 MPa, close the bleed valve and continue to ventilate until the highest pressure is reached. Insulation means maintaining a certain time at the highest temperature to ensure delignification and dissociation of the raw material into a slurry. The holding time depends on the production conditions and the type of pulp. The production of the color paste is 0.5 hours, the bleaching pulp is required to be 1.5 to 2.0 hours, and the special pulp is used for 6 hours, using a normal pressure pot or a high pressure discharge.

Second, the application of rotary cooking pot

During the use of the layer pot, always pay attention to the temperature change of the heat transfer oil. Generally, the heat transfer oil should not exceed 150 °C. Controlled by the electric control box, timely and pay attention to adjust the temperature; when working above 150 °C, pay attention to oil temperature, pressure changes and other safety measures. After the vertical cooking pot heats the material to the desired temperature, the material is discharged from the bottom of the pot. Before each use of the equipment, it should be refueled at each rotating part; pay attention to whether the electric heating rod is damaged. Stirring type sandwich pot, parts on the pot body, it is recommended to use cooked vegetable oil; other places use 30#—40# mechanical oil. After use, the power should be cut off first, and tap water should be added to the pot to protect the heating rod and extend the service life. When adding heat-conducting oil, it is recommended to purchase 320-degree oil temperature heat-conducting oil, which can quickly increase the oil temperature and improve the working efficiency. Before filling the oil, first block the oil draining port, and the oiling amount should be 4~5cm below the overflow port. It is widely used in the processing of foods such as candy, pharmaceuticals, dairy products, wines, cakes, preserves, beverages, canned foods, lo mei, etc. It can also be used in large restaurants or canteen soups, cooking dishes, stews, porridge, etc. Good equipment for quality and time reduction.