Method for processing fibrous stalks专利检索-重力基础海上风力发电机风力发电机组风力发电场发电厂分销网络和设备专利检索查询-专利查询网

Method for processing fibrous stalks

阅读：419发布：2022-08-22

专利汇可以提供Method for processing fibrous stalks专利检索，专利查询，专利分析的服务。并且Method for processing crushed fibrous stalks containing pith, to separate the pith and the fiber, comprising gravity feeding fragments of the said stalks into the upper end of a vertical screening element, simultaneously feeding an aqueous carrier liquid either concurrently or separately in amounts sufficient to provide at least about 4.5 parts by weight of carrier liquid (e.g., water) per part by weight (dry weight basis) of fiber in the crushed fibrous stalks, centrifugally and helically propelling and gravity feeding the fragments through the treating zone defined by the screening element, in the absence of any extraneous artificially created air pressure differentials, so that a layer of axially aligned oriented fragments is formed on the inner surface of the screening element and the pith is separated by the rolling and rubbing action of the fragments on each other, and the separated pith particles which become relatively heavier due to absorption of carrier liquid are forced to the exterior of the screening element by centrifugal forces applied.，下面是Method for processing fibrous stalks专利的具体信息内容。

权利要求

1. Method fro processing crushed fibrous stalks containing pith, to separate the pith and the fiber, comprising gravity feeding fragments of the crushed fibrous stalks into the upper end of a vertically disposed screening element surrounded by a closed chamber and having a substantially circular cross section; simultaneously feeding to the upper end of said screening element sufficient amounts of an aqueous carrier liquid non-reactive with the fiber component to provide at least about 4.5 parts by weight of said liquid for each part by weight (dry weight basis) of the said fiber component; imparting a helical flow path to the mixture of carrier liquid and said fragments and centrifugally forcing the fragments against the inner surface of the screening element by means of rotating agitating members, while precluding any extraneous artificially created air pressure differences, to thereby form a layer of the fragments on the interior surface of the screening element, substantially all of which are oriented with their axes coaxial with the screening element axis; continuing to feed the said fragments toward the lower end of the screening element by continuing contact with the rotating agitating members and because of the forces of gravity acting thereupon while separating the pith therefrom by rolling and rubbing action of the fragments on each other; gradually increasing the working on said fragments as they progress from the upper inlet end to the lower exit end of the screening element to separate the pith particles from the fiber particles and permit the pith particles to absorb substantial carrier liquid; forcing the separated, now much heavier pith particles to the exterior of the screening element by the centrifugal forces on the helically moving mass; and separately recovering substantially pith-free fibers from the lower exit end of the screening element.

2. Method as defined in claim 1 wherein said carrier liquid is water.

3. Method as defined in claim 2 wherein the water to dry fiber ratio is from about 5:1 to about 10:1.

4. Method as defined in claim 1 wherein the fragments of crushed fibrous stalks are first subjected to an initial ''''dry'''' separation treatment comprising gravity feeding fragments of the crushed fibrous stalks into the upper end of a vertically disposed cylindrical screening element surrounded by a closed chamber and having a substantially circular cross section tapering inwardly toward the lower end of said screening element; imparting a helical flow path to the said fragments and centrifugally forcing them against the inner surface of the said screening element by means of rotating agitating members, while precluding any extraneous artificially created air pressure differences, to thereby form a layer of the fragments on the interior surface of the screening element, substantially all of which are oriented with their axes coaxial with the screening element axis; continuing to feed the said fragments toward the lower end of the screening element by continuing contact with the rotating agitating members and because of the forces of gravity acting thereupon while separating the pith therefrom by the rolling and rubbing action of the fragments on each other; gradually incReasing the working on said fragments as they progress from the upper inlet end to the lower exit end of the tapered screening element forcing the separated pith particles to the exterior of the screening element by the centrifugal forces on the helically moving mass; and separately recovering substantially pith-free fibers containing about 95 to about 97 percent fiber (dry, soluble-free basis) from the lower exit end of the screening element; whereafter the substantially pith-free fibers are still further depithed by processing with simultaneously fed aqueous carrier liquid in accordance with the method of claim 1, whereby the final separately recovered pith-free fibers contain at least about 98 weight percent fiber (dry, soluble-free basis).

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Method for processing fibrous stalks

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