Pulping Heat Energy Recovery and Utilization Device

Abstract

The invention discloses a pulping heat recovery and utilization device, which includes a waste heat boiler connected to the waste steam outlet of a high-consistency refiner (1), the waste heat boiler includes a fiber separation unit, a heat recovery unit and a washing unit; the fiber separation unit includes a buffer bin (4) and fiber centrifuge (5), the heat recovery unit includes reboiler (6), heat exchanger (8), wood chip warehouse (3), wood chip washing tank (2) and water supply tank (10), and then A condenser (7) is set between the boiler (6) and the heat exchanger (8), a degasser (9) is set between the heat exchanger (8) and the water supply tank (10), and the washing unit is a washing tower (11 ). The invention changes the previous disadvantages of waste steam recovery heat energy and great environmental pollution, can fully recover heat energy, and has no pollution.

Description

technical field [0001] The invention relates to the technical field of waste heat utilization equipment, in particular to a pulping heat recovery and utilization device. Background technique [0002] At present, many small pulp mills have phenomena such as steam running, escaping, dripping, and leaking. Because the exhaust gas contains pulping fine fibers and residual chemicals, there are serious problems of air quality deterioration and atmospheric corrosion. In order to solve such problems, medium and large chemical pulp mills usually use heat recovery technology to purify and reuse pulping waste gas for treatment. [0003] At present, the heat energy recovery technology of pulping waste steam is relatively simple. In the existing heat recovery system, the waste heat steam generated in the process needs to be converted into secondary steam through the heat recovery system before it can be reused in the process. Because the heat recovery system The processing capacity is c...

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Problems solved by technology

[0003] At present, the heat energy recovery technology of pulping waste steam is relatively simple. In the existing heat recovery system, the waste heat steam generated in the process needs to be converted into secondary steam through the heat recovery system before it can be reused in the process. Because the heat recovery system The processing capacity is certain, and the current heat recovery system is still unable to completely process all the waste heat steam, and the excess waste heat steam can only be discharged outside, causing unnecessary waste and polluting the surrounding environment

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