Distillation extraction process of Chinese fir oil

Abstract

The invention relates to a distillation extraction process of Chinese fir oil, particularly comprising the steps of: 1) placing Chinese fir wood chip being less than 0.1 cm in diameter into a distillation tank, and at the same time, uniformly adding a quick penetrating agent by 0.8-1.2 kg per 1.6 ton of the Chinese fir wood chip, stirring the Chinese fir wood chip, and when the distillation tank is full, sealing the distillation tank; and 2) performing distillation, wherein the production time of the distillation tank is 16 h and is divided into four steps: a) a first step, wherein vapor temperature is 80 DEG C, pressure is 0.5 kg and distillation time is 4 h; b) a second step, wherein the pressure is gradually increased to 8 kg, temperature is increased to 170 DEG C, and a water-soluble weak-alkaline penetrating agent is added through a pressure-reduced valve, and distillation time is 3 h; c) a third step: the pressure is gradually reduced to 3 kg, temperature is 132 DEG C and distillation time is 6 h; and d) a fourth step: quickly increasing the pressure to 10 kg, the temperature is 180 DEG C, and a water-soluble high-temperature penetrating agent is added through the pressure-reduced valve, and distillation time is 3 h. The Chinese fir oil is a colorless or slight-yellow transparent liquid, has good fragrance quality and can be directly used for flavor blending.

Description

technical field [0001] The invention relates to a fir oil extraction process, in particular to a fir oil distillation extraction process. Background technique [0002] Clearwater fir oil can be widely used in spices, food, medical and other industries. Its products can be used directly, and can be further processed to form a series of products with higher added value. Its industrialization potential is huge. According to the analysis of the international market, clear water fir oil is the largest spice product. The market has grown at a rate of 20% per year in the past 20 years, and its growth rate will exceed other spice products in the next 10 years. The market consumption is huge, reaching tens of thousands of tons per year. as much. With the increasing demand in the international market, the market potential of Chinese fir oil will become larger and larger. [0003] Existing clear water fir oil is generally extracted by dry distillation, which is a complex chemical rea...

AI Technical Summary

Problems solved by technology

During the production process, serious environmental pollution occurs to water resources and the surrounding environment, and the production method is very backward

In addition, although the extraction rate of oil by dry distillation is slightly higher, and products such as wood vinegar, charcoal, and combustible gas can be obtained at the same time, the aroma of dry distillation oil is poor, and it cannot be directly used for flavoring like steam oil.