6results about "Pulping foam prevention" patented technology

A foam control agent and a method of using the foam control agent to control foam for paper and pulp production, wherein the agent comprises at least a branched alcohol.

A foam control agent and method of controlling foam for paper or pulp production by use of a foam control agent, wherein the agent comprises at least a branched alcohol.

The application discloses a paper box special paper pulp and a preparation method thereof, and relates to the technical field of papermaking industry. The paper box special paper pulp prepared in the application comprises paper pulp raw pulp and a self-made defoaming agent. The self-made defoaming agent comprises cyclic oligomeric acid ester, silicon paste, polyether modified hydrogen-containing silicone oil, emulsifier and thickening agent. The silicon paste comprises methyl silicone oil, silicone rubber and silicon dioxide. The self-made defoaming agent is not only a high-efficiency defoaming agent with the advantages of organic silicon defoaming agent and polyether defoaming agent, but also enhances the defoaming property of the self-made defoaming agent by combining the organic silicon defoaming agent with the cyclic oligomeric acid ester and lowering the surface tension of the paper pulp raw pulp after the polyether modified hydrogen-containing silicone oil is blended with the cyclic oligomeric acid ester.

A method for digesting lignocellulosic material includes combining a lignocellulosic material comprising lignocellulosic biomass, a polymerized naphthalene sulfonate, a sodium xylene sulfonate, and a white liquor comprising sodium hydroxide and sodium sulfide to form a mixture. Further, the method includes heating the mixture to digest at least a portion of the lignocellulosic material.

A process for increasing digestion efficiency of lignocellulosic material in a treatment vessel includes providing lignocellulosic material comprising lignocellulosic biomass, providing an alkyl polyglycoside, an alkoxylated alcohol, and a white liquor comprising sodium hydroxide and sodium sulfide, combining the lignocellulosic material, the alkyl polyglycoside, the alkoxylated alcohol, and the white liquor to form a mixture, and heating the mixture in the treatment vessel to a temperature of from about 125° C. to about 185° C. to digest at least a portion of the lignocellulosic material. The alkyl polyglycoside and the alkoxylated alcohol are present in the mixture in a weight ratio of actives from about 5:95 to about 95:5, respectively. The mixture is free of added surfactants that are not the alkyl polyglycoside and / or the alkoxylated alcohol. The process has increased digestion efficiency as compared to a process that does not utilize a combination of the alkyl polyglycoside and the alkoxylated alcohol.

A process for increasing digestion efficiency of lignocellulosic material in a treatment vessel includes providing lignocellulosic material comprising lignocellulosic biomass, providing an alkyl polyglycoside, an alkoxylated alcohol, and a white liquor comprising sodium hydroxide and sodium sulfide, combining the ignocellulosic material, the alkyl polyglycoside, the alkoxylated alcohol, and the white liquor to form a mixture, and heating the mixture in the treatment vessel to a temperature of from about 125°C to about 185°C to digest at least a portion of the lignocellulosic material. The alkyl polyglycoside and the alkoxylated alcohol are present in the mixture in a weight ratio of actives from about 5:95 to about 95:5, respectively. The mixture is free of added surfactants that are not the alkyl olyglycoside and / or the alkoxylated alcohol. The process has increased digestion efficiency as compared to a process that does not utilize a combination of the alkyl polyglycoside and the alkoxylated alcohol.