Energy-saving pulping cooking sequence interlock control system

Abstract

The invention discloses an energy-saving pulping cooking sequence interlock control system. A distributed control system (DCS) is used to control the process, and sequence interlock control is adopted for mutual close connection, the locking settings of all valves used in sequence control are normal close state, the execution time of each sequence control is set on the distributed control system (DCS), valves of each sequence are sequentially opened according to the preset time when the system runs to achieve feeding sequence control, cold black liquor filling sequence control, warm black liquor filling and return sequence control, hot black liquor filling and return sequence control, heating and cooking sequence control, replacement fluid return sequence control and discharging sequence control. The energy-saving pulping cooking sequence interlock control system disclosed by the invention has the advantages that the controllability and reliability of energy-saving cooking can be effectively improved, the economic benefit can be improved, and misoperation and accident rate can be reduced.

Description

technical field [0001] The invention relates to the technical field of papermaking industry, in particular to an energy-saving papermaking pulping cooking sequence interlocking control system which adopts high-precision automatic detection instruments and uses a distributed control system (DCS) to continuously and dynamically monitor production process parameters. Background technique [0002] The paper industry is an important traditional industry closely related to the development of the national economy. According to statistics in the mid-1990s, the world’s paper industry’s total output value accounted for about 2.5% of the total industrial output value, and the trade volume of paper products accounted for about the world’s total trade volume. 2%. As an important carrier of information exchange, paper and cardboard are the most important packaging materials in the circulation process of industrial products and daily hygienic consumer goods indispensable to people in moder...

AI Technical Summary

Problems solved by technology

Due to the influence of factors such as the proficiency of the operator and the sense of responsibility of the operator, the actual pressure boost curve often differs greatly from the process requirements, resulting in an increase in steam consumption, a decrease in the slurry yield, and in severe cases, a decrease in the steam pressure of the main pipe. Affect the stable operation of papermaking equipment

At the same time, affected by the

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