A heating control device and method for a paper-making reconstituted tobacco drying box

Abstract

The invention discloses a heating control device and method for a paper-making reconstituted tobacco leaf drying box, which comprises a heat exchanger, a steam valve, a pressure instrument, a hot air drying box, a temperature instrument, a steam pipeline and a hot air pipeline. The control system receives the detection signal of the on-site pressure instrument and temperature instrument, reads the working speed of the production system at the same time, automatically calculates the steam preset pressure value, and outputs the opening degree of the steam valve after the PID chain control loop composed of the pressure instrument and the steam valve . In the production preheating stage, the rising slope of the opening of the steam valve is controlled to prevent water hammer from causing mechanical damage to the heat exchange equipment. In the production operation stage, the rising and falling slopes of the pressure preset parameters are controlled to prevent Large fluctuations in pressure lead to phase changes in the heat exchanger and affect the quality of heat exchange, so as to ensure the stability of control and the stability of the quality of the heated paper.

Description

technical field [0001] The invention belongs to the technical field of reconstituted tobacco leaf papermaking, in particular to a heating control device and method for a papermaking reconstituted tobacco leaf drying box. Background technique [0002] Paper-making reconstituted tobacco production line drying oven equipment is to slowly bake the coated wet paper sheets by circulating hot air to obtain soft and dry reconstituted tobacco leaves. The hot air in the drying box is circulated and heated by air passing through the heat exchanger. The heating medium of the heat exchanger is steam. The steam valve installed on the steam pipe is used to adjust the amount of steam to control the temperature of the hot air. [0003] In the production process of reconstituted tobacco leaves by papermaking method, the hot air temperature of the drying oven plays a vital role in the stability of product quality. Accurate and stable hot air temperature can effectively ensure the softness and ...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a heating control device and method for a reconstituted tobacco leaf drying box by papermaking method, which solves the problem of unstable control in the temperature control mode of the existing hot air drying box, which leads to unstable product quality control, and the steam pipe accessories and subsequent stage The problem of unsafe operation of equipment

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