Method and equipment for pretreating cabo

Abstract

The invention relates to a pretreatment method of tobacco stem which is preheated through gas heat medium and is treated with microwaves in the gas heat medium environment and equipment which adopts the method. The tobacco stem which is required to be processed is treated: preheating the raw materials to be 100-170 DEG C; heating the gas heat medium to be 150-350 DEG C; mixing the tobacco stem andthe gas heat medium and implementing the gas-solid separation after the microwave field action to obtain solid expanded tobacco stem which is treated completely. Then,granular expanded tobacco stem is obtained after the moisture regaining, the screening, the fine shearing, etc. The equipment includes a gas heat medium preheating mechanism, a microwave complex expansion treatment mechanism, etc. With the process and the equipment of the invention, the breakage during the expansion process is small; the pressure used by the process is close to the normal pressure; the pressure resistance requirement for the equipment is not high; the production process is simple and easy; the most fundament lies in that through the gas heat medium with low oxygen content used for preheating the tobacco stem, the evenness and the expansion ration of the tobacco stem and the aspiration quality of the tobacco stem materials are obviously improved.

Description

technical field [0001] The invention relates to the technical field of tobacco production, in particular to a tobacco stem pretreatment method preheated by a gas heat medium and treated with microwaves in a gas heat medium environment and equipment using the method. Background technique [0002] At present, expanded tobacco stems have been widely used in the production of cigarettes. The advantages of expanded tobacco stems make their value increasingly prominent. The main performance is that expanded tobacco stems can effectively reduce the carbon monoxide and tar produced when cigarettes are burned and smoked. The purpose of reducing tar and harm and improving the safety of cigarette products; the bitterness, spicy taste, irritation and miscellaneous gas of tobacco stems are significantly reduced after puffing, so that the smoking quality of cut stems is improved; after expansion treatment, cut stems will It becomes soft and bulky, and the content of stem pieces and stem s...

AI Technical Summary

Problems solved by technology

[0009] The deficiencies in the above prior art are that the expansion uniformity of the product obtained by the microwave treatment process without using the expansion medium is poor; the microwave expansion process using the solid medium is difficult to operate during the expansion operation, and the product suction quality will be affected to a certain extent; The process of expanding the expansion agent has high requirements on the safety and environmental protection of the expansion agent, and the expansion agent is easy to remain in the product

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