Camphor is a special tree species in our country. Its roots, stems, branches and leaves contain camphor and camphor oil. Processing camphor and camphor oil is one of the ways to get rich in rural areas. Mainly through distillation extraction. The process flow and operation method are as follows:

(1) Selection of raw materials. The trunk and roots of the camphor tree contain 2% to 4% camphor and camphor oil, and the branches and leaves contain 1% to 3%. The older the tree, the higher the content. Large pieces of bitter and astringent branches and leaves contain more camphor, and spicy and astringent ones contain more camphor oil. The best collection is in autumn, when the leaves are high in brain content.

(2) Use copper or stainless steel for the distillation pot, not an iron pot. A wooden steaming bucket is set on the steaming stove, and the steaming pot has the same caliber and is sleeved on the pot. Put camphor leaves or slices of camphor wood into the steaming bucket. The water in the pot is separated from the raw material by 10cm. After feeding, immediately close the lid and the filling port, and then check the connection between the distillation pot and the cooler. If there is no leakage, the distillation will start. Keep the water level in the pot during distillation to prevent it from drying out or scorching. The water separated from oil and water is used as backwater and returned to the distillation pot for use.

(3) Cooling and separating the steam with camphor and camphor oil, and entering the multi-ring disc cooler through the air duct. After condensing, the camphor and the camphor and the camphor oil floating on the water are filtered with gauze to obtain the crude camphor and the rest The camphor oil contains most of camphor, so it is called camphor oil.

(4) Double steaming and purification When camphor oil is used to extract camphor, put the camphor oil in the distillation pot for secondary distillation, and collect the distillate at 155-200℃ and call it white oil. After the white oil is cooled, crystalline camphor is precipitated, and then filtered. The filtrate is distilled several times until no camphor is precipitated, and the rest is camphor oil.

(5) The finished product packaging camphor oil should be galvanized iron drums, and pay attention to sealing. Camphor is a colorless and transparent crystal with a pungent and fragrant taste. It should be packed in moisture-proof paper or film and placed in a wooden box or cardboard box to keep it damp.