Method of producing a pelleted slow-release NPN feed for ruminants from waste polysaccharide materials专利检索-含氮废物废物处理与管理专利检索查询-专利查询网

Method of producing a pelleted slow-release NPN feed for ruminants from waste polysaccharide materials

阅读：367发布：2021-09-03

专利汇可以提供Method of producing a pelleted slow-release NPN feed for ruminants from waste polysaccharide materials专利检索，专利查询，专利分析的服务。并且Waste or by-product carbohydrate materials comprising polysaccharides are converted into slow-release nitrogen products valuable as a protein substitute in ruminant feeding and as a slow-release fertilizer for growing plants. The slow-release properties are achieved by acid catalyzed reaction of an amide such as urea or biuret with partially degraded waste or byproduct polysaccharides and by agglomeration of this combination into particles having substantial physical integrity. The waste or by-product polysaccharide materials include citrus pulps, bagasse, peanut hulls, wheat straw and waste paper.，下面是Method of producing a pelleted slow-release NPN feed for ruminants from waste polysaccharide materials专利的具体信息内容。

权利要求

1. A PROCESS OF PREPARING A NONTOXIC PELLETED RUMINANT FEED, WHICH COMPRISES: A. PROVIDING AN AQUEOUS REMINANT FEED SUPPLEMENT COMPRISING 4 TO 8 PARTS BY WEIGHT OF WATER SOLUBLE SULFATE, UP TO 20 PARTS BY WEIGHT OF MOLASSES, 20 TO 35 PARTS BY WEIGHT OF UREA, AND 10 TO 25 PARTS BY WEIGHT, ON A DRY BASIS, OF AN ACID SELECTED FROM THE GROUP CONSISTING OF SUPERPHOS: PHORIC ACID AND AQUEOUS AMMONIATED SUPERPHOSPHORIC ACID HAVING A NITROGEN CONTENT OF ABOUT 9 TO 12 PERCENT BY WEIGHT, A TOTAL H PHOSPHORUS CONTENT MEASURED AS P2O5 OF 28 TO 39% BY WEIGHT, AND WHEREIN POLYMERIC PHOSPHATES REPRESENT ABOUT 30 TO 70 PERCENT BY WEIGHT BASED ON THE TOTAL PHOSPHORUS CONTENT, SUFFICIENT ACID BEING PRESENT TO PROVIDE A PH NO GREATER THAN ABOUT 4.8 B. MIXING SAID FEED SUPPLEMENT WITH A SOLID WASTE OR BYPRODUCT CARBOHYDRATE MATERIAL CONSISTING ESSENTIALLY OF WATER-SOLUBLE AND WATER-INSOLUBLE POLYSACCHARIDES AND LESS THAN 1 PERCENT OF BY WEIGHT OF NITROGEN AND CONTAINING 25 TO 75 WEIGHT PERCENT OF WATER TO IMPREGNATE THE SOLID WASTE OR BY-PRODUCT CARBOHYDRATE MATERIAL AND PROVIDE ABOUT 2 TO 10 WEIGHT PERCENT TOTAL NITROGEN ON A DRY BASIS AND PROVIDE AN ACID CATALYST FOR HYDROLYSIS OF THE POLYSACCHARIDES OF FORM ALDEHYDIC CARBONYL GROUPS REACTIVE TO UREA, SAID MIXTURE HAVING PH NO GREATER THAN 6.7; C. DRYING AND REACTING THE MIXTURE FROM STEP (B) IN A CONVENTIONAL GAS FIRED DRYER AT A TEMPERATURE WITHIN THE RANGE 160* TO 290*F. FOR 5 TO 60 MINUTES TO OBTAIN A DRIED, REACTED, SLOW-RELEASE NITROGEN PRODUCT CONTAINING 5 TO 12 PERCENT BY WEIGHT OF WATER; D. GRINDING SAID DRIED PRODUCT SUFFICIENTLY TO PASS THROUGH A 12-MESH TYLER SCREEN; E. THEN PELLETING AND AGGLOMERATING SAID DIRED PRODUCT AT A PRESSURE OF 500-20,000 P.S.I.G. WHILE MAINTAINING THE TEMPERATURE THEREOF AT ABOUT 140*F. TO 300*F.; AND F. COOLING THE RESULTING PELLETED PRODUCT TO AMBIENT TEMPERATURE TO FORM HARD PELLETS WHEREIN 50 TO 90 PERCENT OF THE TOTAL NITROGEN IS WATER-INSOLUBLE NITROGEN.

2. The process of claim 1 wherein the pH of the liquid ruminant feed supplement in step (a) is 2-4.

3. The process of claim 1 wherein the pH of the mixture in step (b) is no greater than 6.3.

4. The process of claim 1 wherein about 0.5 to 7 percent, based on the total weight of polysaccharides, of a water-soluble polysaccharide is incorporated into the dried impregnated material from step (c) prior to pelleting in step (e) to facilitate agglomerating the product.

5. The process of claim 1 wherein the pelleted product from step (e) is maintained at 140*to 300*F. for 1 to 60 minutes prior to cooling in step (f), whereby the water-insoluble, slow-release nitrogen content of the composition is increased.

6. The process of claim 1 wherein the drying and reacting temperature in step (c) is maintained within the range 180*to 240*F., based on the temperature of the solid material.

7. The process of claim 1 wherein the pellet formation temperature in step (e) is 200*to 300*F.

8. The process of claim 1 wherein a minor proportion of sewage sludge is incorporated into the formulation immediately prior to pelleting in step (e).

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Method of producing a pelleted slow-release NPN feed for ruminants from waste polysaccharide materials

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