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Pulping heat recycling device

A heat energy recovery and pulping technology, applied in pulping waste gas treatment and other directions, can solve the problems of waste heat steam waste, inability to completely treat waste heat steam, environmental pollution, etc., to reduce production water, improve the scrubbing effect, and control the surrounding environment. Effect

Active Publication Date: 2012-10-17
GUANGXI JINGUI PULP PAPER
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AI Technical Summary

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

Method used

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  • Pulping heat recycling device

Examples

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Embodiment 1

[0019] A pulping heat recovery and utilization device includes a waste heat boiler connected to the waste steam outlet of a high-consistency refiner 1, and the waste heat boiler includes a fiber separation unit, a heat recovery unit and a washing unit.

[0020] The fiber separation unit includes a buffer bin 4 and a fiber centrifugal separator 5, a buffer bin 4 is set between the fiber centrifugal separator 5 and the high-consistency refiner 1, and the waste steam outlet of the high-consistency refiner 1 is connected to the steam inlet of the buffer bin 4 , the steam outlet of the buffer bin 4 is connected with the steam inlet of the fiber centrifuge 5.

[0021] The heat recovery unit includes a reboiler 6, a heat exchanger 8, a chip bin 3, a chip washing tank 2 and a water feed tank 10, the steam inlet of the reboiler 6, the chip bin 3 and the chip washing tank 2 and the fiber centrifuge 5 The steam outlet is connected, and the steam outlet of the reboiler 6 is connected with...

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Abstract

The invention discloses a pulping heat recycling device. The pulping heat recycling device comprises a residual heat boiler which is connected with a waste steam outlet of a high-concentration refiner (1), wherein the residual heat boiler consists of a fiber separation unit, a heat recycle unit and a washing unit; and the fiber separation unit consists of a surge bin (4) and a fiber centrifugal separator (5), the heat recycle unit consists a reboiler (6), a heat exchanger (8), a wood chip silo (3), a wood chip washing tank (2) and a water supply tank (10), a condenser (7) is arranged between the reboiler (6) and the heat exchanger (8), a degasser (9) is arranged between the heat exchanger (8) and the water supply tank (10), and a washing tower (11) is used as the washing unit. The pulping heat recycling device can change the defects that heat waste is large and environment pollution is large in traditional waste steam recycling, and can fully recycle heat without 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 the phenomenon of steam running, escaping, dripping, and leaking. Because the waste 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 cer...

Claims

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Application Information

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IPC IPC(8): D21C11/06
CPCY02P70/10
Inventor 黄鹏谕黎创华
Owner GUANGXI JINGUI PULP PAPER
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