High-temperature and high-pressure hydrogenation method for castor oil

Abstract

The invention belongs to the hydrogenation technology of castor oil, and more particularly relates to a high-temperature and high-pressure hydrogenation method of the castor oil. The high-temperature and high-pressure hydrogenation method of the castor oil adopts a high-temperature and high-pressure hydrogenation method with the reaction pressure of 2 to 2.5MPa and the temperature of 130 to 150 DEG C; the technique solves the problems in the prior operating technique, shortens the reaction time, with the whole acidolysis time being 7 to 8 hours, improves the utilization ratio of the equipment, and stabilizes and improves the product quality, with the iodine value of less than 3.0g / 100g. Meanwhile, the high-temperature and high-pressure hydrogenation method of the castor oil also greatly reduces the production cost, saves electricity and labor cost by 50 percent, halves the equipment depreciation and doubles the production efficiency.

Description

technical field [0001] The invention belongs to the hydrogenation technology of castor oil, in particular to a high-temperature and high-pressure hydrogenation method of castor oil. Background technique [0002] Castor oil is one of the world's top ten oil crops and one of the four major inedible oil crops. The oil content of castor bean is 46% to 55%, the oil content of the kernel can reach more than 70%, and the oil output per 100kg is 42 to 45kg. Castor oil is a non-drying oil, which does not solidify at -18°C, and does not deteriorate or burn at high temperatures of 500°C to 600°C. The main component of castor oil is glyceride of ricinoleic acid, which contains three ethylenic bonds, three ester bonds and three hydroxyl groups in its molecular structure. The functional groups in the molecular structure of castor oil determine that it can undergo various chemical reactions. Generate a variety of derivative products. [0003] Hydrogenated castor oil is one of the derivat...

AI Technical Summary

Problems solved by technology

[0004] At present, the hydrogenation process of castor oil has an operating temperature of 100°C and a pressure of less than 1.5Mpa. The defects of this operating process are that the reaction time is long, 15-16 hours, the utilization rate of equipment is low, and the product quality is unstable. , its iodine value is sometimes as high as 30-40g / 100g, and the longer the reaction time, the hydroxyl value will decrease, and cause waste of production cost, high production cost