The invention discloses a hot
processing method of
zanthoxylum armatum oil. The hot
processing method comprises the following steps: S100, feeding; s200, the reaction kettle is heated, the temperature, monitored by the temperature sensor, of the reaction kettle is increased to the preset highest temperature h, h is larger than or equal to 115 DEG C and smaller than or equal to 135 DEG C, when the temperature of the reaction kettle is h, the preset duration t is kept, and t is larger than or equal to 5 min and smaller than or equal to 15 min; s300, n times of
flash evaporation are conducted on the reaction kettle through a
flash evaporation unit, n is larger than or equal to 1 and smaller than or equal to 5, and
flash evaporation is stopped when the number of times of flash
evaporation reaches n or drainage weighing is conducted when flash
evaporation is opened, and the obtained
drainage amount reaches 25% of the putting amount of the chilled and fresh
rattan pepper; s400, the reaction kettle starts to conduct atmospheric
distillation at the temperature of 100 DEG C, water is drained in real time, and when the atmospheric
distillation time reaches 1 hr or the current accumulated total water
drainage amount reaches 55% of the putting amount of the chilled and fresh
rattan pepper, the step S500 is executed; and S500, cooling the reaction kettle, discharging and filtering to obtain the
zanthoxylum armatum oil. The extraction rate of
flavor substances in the raw materials can be increased, so that the product has better
flavor.