Tobacco compound heat transfer small drum drying device

Abstract

A tobacco compound heat transfer small drum drying device, including a preheater connected to an air source and a water source, a saturated humid air generator, a mixer, a drum device and a data acquisition device, a preheater and a saturated humid air generator The generated gases can be sent to the mixer through the conveying pipeline for mixing, and then enter the drum device through the rotary joint, and the shredded tobacco in the drum can be treated with a controllable residence time. Among them, the preheater, saturated humid air generator , the mixer and the air temperature sent to the drum device can be controlled by an intelligent temperature controller. The substantive features of the present invention are: under the conditions of controlling a certain rotational speed and cylinder wall temperature, the cylinder, together with the dry gas medium fed in, processes a certain amount of shredded tobacco samples in the cylinder for a set drying time. Part of the shredded tobacco can be taken out for physical, chemical and sensory quality analysis and evaluation, and then the processing quality characteristics of the shredded tobacco during the drying process can be analyzed and judged.

Description

technical field [0001] The present invention relates to tobacco processing equipment, in particular to a small tobacco composite heat transfer drum drying device, which is aimed at the controllable composite heat transfer (tube wall temperature, gas temperature, etc.) Medium temperature and humidity) and a small device for drying under certain drum rotation speed conditions, the maximum batch capacity is 1kg. Background technique [0002] In the process of tobacco production and processing, the drum dryer based on composite heat transfer is the most widely used. The processing process for shredded tobacco (or cigarette raw materials such as cut stems and sheets) is a steady-state process, and the heat and humidity of shredded tobacco in the steady-state process Transfer is a transient process, and the characteristics of processing quality variation with processing conditions and residence time in the transient process are the core of steady-state process control. The main s...

AI Technical Summary

Problems solved by technology

The heat transfer method of this device has realized the drying process of the composite heat transfer to a certain extent, but because there are two movement modes of the shredded tobacco in the drum, one is to lift together with the heat conduction plate, and the other is to When the heat conduction plate moves to a certain angle, the shredded tobacco is freely sprinkled, but the shredded tobacco in the device is still piled up, the conduction and heat transfer method cannot process the shredded tobacco evenly, and the electric heating sheet cannot meet the uniform temperature field on the sheet; at the same time, there is humid air The temperature and humidity conditions cannot be controlled

Therefore, this device does not well solve the relevant problems of drum drying under compound heat transfer

[0005] However, when studying the processing characteristics of shredded tobacco on the shredded tobacco drum drying equipment used in production, there are the following problems: 1. The amount of shredded tobacco is too large (300kg / h~10000kg / h), resulting in waste of shredded tobacco; 2. The intermediate samples cannot be taken out, resulting in research Difficulties in the relationship between quality and residence time, 3. The adjustment range and control accuracy of the operating parameters of production equipment are limited, which may easily lead to non-repeatable data

Images