7 results about "Pulp mill" patented technology

The utility model relates to paper production field, specifically say a kind of rotation shaft sealing kit based on paper pulp refiner, including the dynamic ring rotating with rotation shaft and the static ring being set on refiner shell, the dynamic ring is provided with sealing ring between static ring, the dynamic ring is also provided with sealing compensation module between static ring;The rotation shaft sealing kit based on paper pulp refiner of the utility model, by setting sealing ring between dynamic ring and static ring, and cooperate sealing compensation module, even in long time operation or wear, still can keep good seal, effectively prevent leakage, reduce the material loss caused by leakage, improve production efficiency, while also reduce the risk of environmental pollution, and adopt detachable design, so that daily inspection and replacement are more convenient and fast, reduce maintenance cost.

This invention discloses a method for preparing sodium lignin sulfonate-based porous carbon and its application, belonging to the field of efficient resource utilization of biomass and water treatment technology. The method selects sodium lignin sulfonate waste from pulp mills as a carbon source, and processes it to obtain sodium lignin sulfonate powder; the sodium lignin sulfonate powder is then blended with SiO2 and / or HCO2K and activated to obtain sodium lignin sulfonate-based porous carbon; this carbon is then applied to the removal of antibiotics from water. This invention fully utilizes the waste sodium lignin sulfonate from pulp mills, realizing the recycling of waste, increasing the added value of waste, and the preparation process is simple, pollution-free, environmentally friendly, and in line with green chemistry principles.

This invention discloses a cellulose cotton pulp for thermal insulation aerogel and its preparation method, belonging to the field of cellulose technology. The preparation method includes the following steps: Step 1, preparing a sodium hydroxide solution, adding cotton linters to the sodium hydroxide solution for ultrasonic-assisted preimpregnation to obtain a preimpregnated pulp; Step 2, transferring the preimpregnated pulp to a digester, preparing a composite cooking aid, adding the composite cooking aid to the digester, mixing well, and then cooking; Step 3, after cooking, releasing the gas, pulping using a pulping mill, followed by bleaching and washing; Step 4, adding a modifier to the washed pulp, stirring and reacting at 30-60℃ for 1-2 hours, and obtaining cellulose cotton pulp after the reaction. The modifier includes phytic acid-modified hydrotalcite and xylitol, with a mass ratio of 1:1-2. In preparing cellulose cotton pulp, this invention uses ultrasonic preimpregnation, a composite cooking aid to assist alkaline cooking, and modifier treatment to improve the mechanical strength of the cellulose.

The present application relates to a kind of paper pulp mill wood chip drying preparation method and system, specifically, at the head of dryer, buffer bin and supporting components are installed, so that the material to be dried can quickly and smoothly enter the drying cylinder, and the smooth material flow also makes the drying air flow circulate smoothly in the dryer, and by matching the corresponding industrial control parameters, the wood chip drying standard is realized once, the cost is reduced, the efficiency is increased, energy saving and emission reduction are realized.

The invention relates to new solutions for effective recovery of chemicals in a Kraft pulp mill A method for recovering chemicals in a Kraft pulp mill is provided. The method comprises producing green liquor in a recovery boiler, conveying green liquor from the recovery boiler to a green liquor stripper, stripping the green liquor with a gas stream comprising or consisting of CO2 so as to produce a stripper off-gas, feeding the stripper off-gas to a sulfuric acid plant, and producing sulfuric acid from the stripper off-gas. Further, a system as well as use of the same for recovering chemicals in a Kraft pulp mill are provided.

The utility model relates to the technical field of pulp mill, concretely is double disc pulp mill. Including material cylinder, crushing mechanism and the blanking tube, the bottom of material cylinder is provided with support, the crushing mechanism includes the bottom disc that rotates the installation in the inside of material cylinder, is located the polishing disc above bottom disc and is installed in material cylinder for driving polishing disc and bottom disc first power component that each other reverse rotation, polishing disc is double cone structure, and the upper end of bottom disc is in accord with the bottom of polishing disc, the circumferential side of bottom disc is installed with sealing ring, the outer surface of polishing disc, the inner surface of bottom disc and the inside wall upper portion of material cylinder all are installed with a plurality of grinding teeth, and the blanking tube communicates with the inside recessed chamber of bottom disc. The utility model discloses through increasing polishing area and improving the relative speed of polishing disc and bottom disc to improve the pulping efficiency of equipment.

The present application relates to the technical field of a pulp mill, in particular to a pulp mill for paper pulp manufacturing, which comprises a machine base, a shaft power assembly and an outer shell, the outer shell can be split, the outer shell and the shaft power assembly are installed on the upper side of the machine base, one end of the shaft power assembly is installed in the inner side of the outer shell, the shaft power assembly can be power rotated relative to the outer shell and the machine base, two stator disc assemblies are installed in the inner side of the outer shell, the stator disc assemblies are coaxially arranged with the shaft power assembly, and a rotating disc assembly is arranged between the two stator disc assemblies. The pulp after being ground can pass through a second mixing treatment mechanism, the second mixing treatment mechanism can again mix and treat the material entering the stator disc assembly and the rotating disc assembly for grinding, so that the paper pulp is prevented from being separated again due to the grinding resistance, the paper pulp after secondary mixing is again subjected to grinding treatment, the mixing degree of the pulp is ensured, and the subsequent pulp is stably flowed between the stator disc assembly and the rotating disc assembly after being pumped.