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Treatment device and recovering method for pressing alkali

A technology of alkali treatment and lye, which is applied in separation methods, rayon recovery, chemical instruments and methods, etc. It can solve the problems of low efficiency of alkali recovery in dialysis process, large water consumption, high investment, etc.

Inactive Publication Date: 2013-02-27
大连山元机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In my country, dialysis is mainly used to separate semi-fibers and recover squeezed alkali, but the recovery of alkali by dialysis is inefficient, consumes a lot of water, and requires high investment

Method used

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  • Treatment device and recovering method for pressing alkali

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Embodiment Construction

[0013] Such as figure 1 As shown, the specific embodiment of the present invention mainly includes the following steps: the squeezed alkali is injected into the tubular filter I through the liquid supply pump I, and the semi-fibers above 20 to 35 microns are separated. Type filter II further separates the semi-fiber impurities above 10 microns, and passes through the security filter after being pressurized by the booster pump to remove semi-fibers above 5 microns. The treatment efficiency of the whole set of devices above 5 microns can reach more than 95%.

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Abstract

The invention discloses a treatment device for pressing alkali. The treatment device for the pressing alkali comprises a pressing alkali tank, a liquid supply pump I, a tubular filter I, a buffer tank, a liquid supply pump II, a tubular filter II, a pressurizing pump and a safety filter. A recovering method for the treated pressing alkali comprises the following steps of: step a, injecting the pressing alkali into the tubular filter I through the liquid supply pump I, intercepting greater semi-fibers by a filtering element and enabling alkali liquor to enter the next-stage buffer tank; step b, enabling the alkali liquor subjected to primary separation to enter the tubular filter II for further separating semi-fiber impurities; and step c, pressurizing the alkali liquor and removing fine particles in the alkali liquor by the safety filter so as to ensure the quality the alkali liquor at an outlet. According to the treatment device disclosed by the invention, on the principle of not changing the properties of original alkali liquor, the current treating device for the pressing alkali is improved and intensified for overcoming the defects; and by optimizing a treatment process of the traditional device, the complete device is compact in structure, effective separation of the semi-fibers from the alkali liquor is realized and the pressing alkali liquor is recovered efficiently and economically.

Description

technical field [0001] The invention relates to an alkali-impregnated squeeze liquid treatment device and a recovery method in the viscose fiber industry. Background technique [0002] Viscose fiber is the earliest man-made fiber to realize industrial production. For more than 100 years, viscose fiber has long been favored by consumers due to its comfortable performance. With its complete varieties and excellent characteristics, viscose fiber is more and more favored by application industries and consumers. Its application scope has expanded from traditional industries to various fields such as clothing, decoration, medical and health care, and industrial supplies. In the production process of viscose fiber, the hemicellulose in the raw material needs to be dissolved out by impregnation with alkaline solution, otherwise it will have extremely adverse effects on the production process and the quality of the finished product. In the impregnation process, high-concentration al...

Claims

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Application Information

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IPC IPC(8): D01F13/02B01D36/02
CPCY02P70/62
Inventor 王继勇
Owner 大连山元机械制造有限公司
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