A chemical slurry or dissolving slurry preparation method and its experimental displacement cooking device

Abstract

The invention discloses a chemical pulp or dissolving pulp preparation method and an experimental displacement steaming and cooking device thereof; the experimental displacement steaming and cooking device comprises a steaming and cooking unit, a hot white liquid tank, a hot black liquid tank, a warm black liquid tank, a washing liquid tank, a circulating pump, a drug liquid pump, a heating rod, a steam generator, a flow meter, and a DCS operating system. The hot white liquid tank, the hot black liquid tank, the warm black liquid tank and the washing liquid tank are connected in parallel to the steaming and cooking unit and the steam generator and adopt a liquid pumping pipeline, a liquid inlet pipeline and a steam pipeline in common; the heating rod is mounted on a drug liquid circulation pipeline of the steaming and cooking unit; the flow meter is mounted on a main pipeline for going into and out of the steaming and cooking unit; the DCS operating system can real-timely display liquid levels, temperatures and pressures of the tanks and can control opening and closing of the drug liquid pump, the circulating pump and the heating rod. The device has the advantages of reasonable structure, convenient use, simple preparation process, and high degree of automation, and can perform displacement steaming and cooking simulation on any pulping raw material.

Description

technical field [0001] The invention relates to a pulping and papermaking process and an experimental device thereof, in particular to a method for preparing chemical pulp or dissolving pulp and an experimental displacement cooking device thereof. Background technique [0002] With the continuous expansion of enterprise scale and the continuous extension of the industrial chain in the future, energy consumption and total pollutant discharge will increase. Traditional pulp and paper enterprises lack key technologies and core competitiveness for energy conservation and emission reduction. Emission reduction will be more and more restricted by technical bottlenecks. In order to gain a place in the strict environmental protection regulations and fierce market competition, pulp and paper technology must complete the national goal of energy conservation and emission reduction. At present, my country's paper industry has entered the fast lane of low consumption, low pollution, and ...

AI Technical Summary

Problems solved by technology

Solve the technical problems that it is difficult to meet the needs of the displacement cooking experiment in the existing technology, and the cost of using the displacement digester to conduct the experiment in the factory is too high and difficult to realize

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