Alkaline liquid purification device and method

A purification device and lye technology, which is applied in viscose fiber production and paper making, can solve the problems of difficult cleaning process of plate and frame filter, harsh environment in dismantling plate and frame, waste of lye, etc., so as to save manpower and realize automatic Controllable and high filtration efficiency

Inactive Publication Date: 2019-03-08
YIBIN GRACE +1
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Problems solved by technology

[0007] The present invention aims to solve the problem that in the process of purifying lye containing impurities such as fibers, silt, and resins in the existing viscose production process, the lye needs to be filtered through a filter device before entering the nanofiltration system, while the existing filter Most of the devices use plate-and-frame filters, and the cleaning process of plate-and-frame filters is difficult. The process of dismantling the p

Method used

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  • Alkaline liquid purification device and method

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Example Embodiment

[0026] Example 1

[0027] Reference figure 1 This embodiment proposes a lye purification device, which includes a raw material lye barrel 1, a boiling bed separator 2, a compressed air pipeline I4, an exhaust gas discharge pipeline 5, a waste water discharge pipeline 6, a soft water pipeline 7, a compressed air pipeline II8, and filtrate Output pipe 9. This purification device is used for the pretreatment operation of the waste lye before entering the nanofiltration system. It is necessary to remove the fiber, silt, resin and other large solids in the waste lye. The increase in the pipeline I11 is installed The pressure pump 3 transports the waste lye in the raw lye barrel 1 through the pipe I11 to the fluidized bed separator 2 for filtering. The pipe I11 is equipped with a valve I131 that controls the opening and closing of the pipe I11, and the pipe I11 is connected to the compressed air pipe I4. A valve VIII138 is installed on the compressed air pipeline I4, the filtrate outl...

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Abstract

The invention discloses an alkaline liquid purification device and method, and belongs to the technical field of viscose fiber production. The alkaline liquid purification device comprises a raw material alkaline liquid barrel, a fluidized bed separator, a compressed air pipeline I, an exhaust gas discharging pipeline, a wastewater discharging pipeline, a soft water pipeline, a compressed air pipeline II and a filtrate output pipe. Before raw material alkaline liquid enters a nanofiltration system, the fluidized bed separator is used to replace a traditional plate and frame filter for filtering, and the opening and closing of a valve are controlled to control the opening and closing of pipelines connected to the fluidized bed separator; automatic filtration and backwashing processes of thefiltering system are realized; the production difficulty is reduced, and manpower is saved.

Description

technical field [0001] The invention belongs to the technical field of viscose fiber production, specifically relates to an alkali liquor purification device and method, and is also applicable to the technical field of papermaking. Background technique [0002] During the pulp impregnation process, a large amount of fine fibers, silt, resin, semi-fiber and other impurities will be brought into the lye, and the impurities in the lye will prevent the lye from penetrating the pulp to a certain extent and form alkali fibers. Reaching a certain content will have a corresponding impact on pulp impregnation. Therefore, the lye after impregnation needs to pass through the metal plate frame, polypropylene plate frame, or even nanofiltration membrane before it can be used for impregnation again. [0003] At present, viscose staple fiber enterprises have the following two types of lye that need to be purified and recycled: one is squeezed lye; the other is substituted lye. In the pri...

Claims

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Application Information

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IPC IPC(8): B01D24/36
CPCB01D24/36
Inventor 胡小东廖廷高刘潘官磊
Owner YIBIN GRACE
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