Fiber refining process

Abstract

The invention relates to a fiber refining process, which belongs to the technical field of fiber product processing, and is characterized by comprising the following steps of (1) burdening, and conveying an alkaline liquor into a spherical boiler (5); (2) cooking, high-temperature and high-pressure cooling fiber soaked in the alkaline liquor through the spherical boiler (5), and then discharging into a breaker beater (7); (3) stirring through the breaker beater (7) for re-cooling, and preliminarily separating the fiber from the alkaline liquor; (4) removing liquid from the fiber through rotation in the breaker beater (7); (5) separating the removed liquid to obtain an alkaline liquor and impurities; (6) feeding the fiber without the alkaline liquor into a liquid removal machine, and repetitively rinsing and spin-drying for multiple times through the liquid removal machine; (7) after completing rinsing, drying. According to the fiber refining process provided by the invention, the alkaline liquor contained in the fiber is separated, and the useful separated high-concentration alkaline liquor is recycled, so that the requirement on environment protection is met; alkaline containing wastewater has no need to be treated independently, so that the utilization rate of alkaline in a system is improved, and the production cost is further reduced.

Description

technical field [0001] A fiber refining process belongs to the technical field of fiber product processing. Background technique [0002] At present, most fiber products are usually soaked in lye, and then the impurities such as colloid and lignin on the surface of the raw material for fiber production are removed by steaming, and dehydration and rinsing are required after steaming. Among them, during the dehydration process, the black impurity liquid released from the fiber raw materials has a high content of lye. If this part of lye is directly discharged, it will not only fail to meet the environmental protection standards, but also cause a lot of waste of lye, which increases production costs. Simultaneously, in the process of rinsing, because still there is a large amount of lye components in the fiber after dehydration, because need a large amount of water to carry out multiple rinsing, until rinsing is clean. The current rinsing process is realized through the bleach...

AI Technical Summary

Problems solved by technology

Among them, during the dehydration process, the black impurity liquid released from the fiber raw materials has a high content of passing lye. If this part of lye is directly discharged, it will not only fail to meet environmental protection standards, but also cause a lot of waste of lye, which increases production costs. ; At the same time, in the process of rinsing, since there is still a large amount of lye in the fiber after dehydration, because a large amount of water is needed for multiple rinsing, until the rinsing is clean

The current rinsing process is realized through the bleaching tank. The fibers are placed in the bleaching tank and rinsed multiple times through a large amount of running water. The water after rinsing meets the environmental protection standard and is directly discharged. If it does not meet the standard, it will be treated by the sewage treatment device. The bleaching method here not only causes a lot of waste of water resources, but also increases the manufacturing cost of the fiber. In addition, in the bleaching tank, the agitation of the fiber is usually realized by the propeller, and the bleaching effect of the fiber is promoted by agitating the fiber, but due to the propulsion The rotating speed of the machine is relatively slow. When a large amount of fibers are placed in the bleaching tank, the bleaching effect is not ideal, which increases the difficulty and frequency of bleaching, and further increases the amount of bleaching water.

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