64results about How to "Reduce energy consumption for refining" patented technology

The invention discloses a production method of a complex enzyme liquid for chemi-mechanical pulping. The production method is characterized by comprising the following steps: weighing various component enzymes, mixing and compounding the various component enzymes in a compounding tank, preventing corrosion, inspecting, packaging and storing in a storeroom at 5 DEG C, wherein the various component enzymes comprise alkaline pectinase, xylanase, mannose and ligninase. The application of the complex enzyme liquid in chemi-mechanical pulping is realized as follows: before steaming paper-making raw materials, adding the complex enzyme liquid to the paper-making raw materials through a metering pump, uniformly mixing the complex enzyme liquid with the paper-making raw materials for enzymatic hydrolysis under enzymatic treatment conditions that the temperature is 40-60 DEG C and enzymatic hydrolysis duration is 30-240 minutes; after the enzymatic hydrolysis, performing following processes as normal. The production method, through coupling synergistic effect of multiple enzymes of the complex enzyme liquid in chemi-mechanical pulping, can be used for improving the whiteness of pulp by 2-5% and reducing the pulp yellowing under a condition of guaranteeing high yield and low cost of pulping; the production method can be used for reducing the dosage of chemical raw materials by 20-30% and reducing the pulp grinding energy consumption by 18-30%; meanwhile, the production method can be used for reducing pollution and improving the pulp quality.

The present invention relates to a method for reducing pulp-grinding energy dissipation of refine grinding stage by using enzyme treatment. Said invention adopts the following steps: adding hydrolytic enzyme into the coarse-ground pulp material, regulating pH value to 5.0-8, temperature is 25-60deg.C, pulp concentration is 6-15% and reaction time is 30-90min, then conveying the pulp material into a pulp-grinding machine to make refine-grinding operation. The described hydrolytic enzyme is one kind or two kinds of xylanase, laccase and white pot enzyme, etc.

The invention relates to a method for pre-treating wood chips by hot water before preparing chemi-mechanical pulp. The method comprises the following steps: after soaking the wood chips, spirally extruding the wood chips; adding water into the wood chips which are spirally extruded, carrying out self-hydrolyzing pre-treatment on a mixture of the wood chips and water, and obtaining a pre-hydrolysate and the wood chips after self-hydrolyzing pre-treatment; and collecting the extruded wood chips as a raw material of chemi-mechanical pulp to obtain the wood chips after pre-treatment by hot water. The pre-treatment method provided by the invention fully uses existing part of equipment in the pulping industry without external complex equipment, and only water, small amount of dilute acids and ethanol are used without purchasing other chemicals, so that the pre-treatment process can be realized, thereby greatly saving the comprehensive production cost. Meanwhile, the method is beneficial for effectively combining pulping and papermaking with bio-refinery by existing enterprises.

The low pressure herbal raw material blasting and pulp making process includes raw material pre-treatment of adding alkali, sodium sulfide and assistant to herbal raw material with stirring at normaltemperature to 90 deg.c high temperature and high pressure treatment of the material in a blast tank at 110-210 deg.c and 0.5-1.9 MPa for 1-15 min; and blowing to blast the material instantaneously to a receiving container. The herbal pulp thus produced has strength equivalent to that of chemical pulp and the present invention has high yield, low power consumption, low cost and high pulp whiteness.

This invention discloses a low blasting pulp making method in palm fibre. It includes material pretreatment, that is alkali, and sodium-sulfur compound and water are added into palm fibre materials. The bone dry weight percentage is that alkali 0-10%, sodium-sulfur compound 0-16% and water that can make liquid ratio to 0.5-3, then they are placed for 0-24 hours after uniformly blended. Then the materials after pretreatment are low pressure proposed and discharged. The advantages are low cost, low temperature, and low damage to fiber. The waste water after pulp making can be used as fertilizer for crop irrigation, low pollution high gain ratio. It can be used to make high strength card board, corrugated board, writing paper, manifold paper and other culture using paper.

The invention discloses application of an efficient penetrating agent in high-yield pulp making. The application is mainly characterized in that in high-yield pulp making, the efficient penetrating agent which has alkali resistance and oxidative resistance, is easy to dissolve in water and has good emulsifying and penetrating properties is selected to accelerate penetration of pre-immersing chemical liquid and increase the treatment degree of wood chips, improve pulp grinding quality, reduce the wood chip fiber loss in pulp grinding, increase the yield of pulp grinding and improve physical strength of pulp grinding. According to the technological method, the efficient penetrating agent is pumped into an inlet of a chemical mixing tank pump through a metering pump to be mixed with sodium hydroxide, sodium silicate, chelating agents and other chemicals, the mixture is pumped to an MSD outlet expansion pup joint through the chemical mixing tank pump to be mixed with hydrogen peroxide, and then the new mixture enters an immerser to react with the wood chips. According to the quality of needed pulp, the usage amount of H2O2 and NaOH is optimized. The cost of producing the high-yield pulp is lower, the physical strength of the pulp is better, the pulp making yield is higher, and the content of COD in discharged waste water is lower.

The invention relates to a preparation method of biological mechanical pulp through synergy of hot water treatment and biological enzyme treatment. Waste of crop wheat is used as a raw material for pulp preparation, normal-pressure hot water is adopted for treating wheat straw hoods, meanwhile, a small amount of alkali is added to adjust the pH value of hot water to be 10-14, after part of hemicellulose, lignin, pectin and other substances in the wheat straw hoods are dissolved out, the wheat straw hoods are saturated, softened and treated through spiral extrusion, wheat straw hoods are physically split, then biological enzyme treatment is conducted, then fibers are further softened, then pulp grinding is conducted on the wheat straw hoods, and the demand for producing primary-color package paper and paper-base materials is met.

A low-and medium-pressure blasting method for pulping the broad-leaf wood includes proportioning the alkali (1-6 wt%), Na-S compound (1-16 wt%), assistant (0-1 wt%) and broad-leaf wood (rest), stirring at ordinary temp -90 deg.C for 0-24 hr, treating at 140-220 deg.C and 0.8-2.28 MPa for 3-15 min, and sudden blasting. Its advantages are high strength, output rate, whiteness, toughness and rinsability, and low energy consumption.

The invention provides a method for preparing biomechanical pulp from wheat straw sheath. The method comprises the following steps: S1, cutting the pretreated wheat straw sheath section into segments,and treating by means of action of warm water and alkaline complex enzyme; S2, adding hot water into the wheat straw sheath treated in the step S1 for performing saturation softening treatment; S3, grinding the wheat straw sheath, subjected to the softening treatment in the step S2, into thick liquid to prepare the biomechanical pulp. The wheat straw sheath is used as a raw material for the firsttime, and the high-yield primary color biomechanical pulp is prepared by using a hot water combined alkaline complex biological enzyme process, so that the requirements of producing primary color packaging paper and paper-based materials are reached. The preparation method provided by the invention is simple, green, environment-friendly and energy-saving, conforms to the national industrial policy of resource conservation, economic cycle, energy conservation and emission reduction, and can generate good social, economic and ecological benefits, thus having good practical application value andindustrial application prospect.

A high-concentration pulp grinder with eccentric feeding inlet is composed of casing, front end cover, feeding screw, rotary and fixed grinding discs with grinding teeth on their opposite surfaces, grinding gap regulator, and drive unit. Its advantages are not blocking and long service life of mainshaft.

The invention discloses a plant fiber modified compound enzyme preparation, a preparation method and application of the plant fiber modified compound enzyme preparation to the field of papermaking. The compound enzyme preparation is prepared from pectinase, cellulose, lipase, xylanase, glucose oxidase and levan hydrolase and is applied to pretreatment of papermaking raw materials, sewage treatment loads can be reduced, pulping energy consumption can be reduced, the paper base strength can be improved, and the finished paper quality can be improved.

The invention relates to a hot steam synergistic bio-enzyme method used for processing wheat straw and preparing an original color biomechanical pulp. According to the hot steam synergistic bio-enzymemethod, crop wheat waste is taken as a pulping raw material, hot steam is adopted to process wheat straw, a micro-amount of an alkali is added to adjusted hot water pH value to 10 to 14, when dissolving out of a part of hemicelluloses, lignin, pectin, and the like in wheat straw is realized, and wheat straw steaming hydro-thermal saturation softening is achieved, screw extrusion processing is carried out for wheat straw physical devillicating; then bio-enzyme processing is carried out for fiber further softening; and then wheat straw is subjected to pulp refining so as to obtain a product capable of satisfying requirements of original color packaging paper and paper base material production.

The invention provides a method for preparing biomechanical pulp through wheat straw leaves. The method comprises the steps that S1, pretreated wheat straw leaves are cut off, water is added, and hotwater treatment is conducted; S2, alkali is added in the mixture obtained after treatment in step S1, the solution pH is adjusted to be 10-14, a small part of hemicellulose, lignin, pectin and other substances are dissolved from the wheat straw leaves, and while the wheat straw leaves are waterlogged and softened, the pH value of wheat straw is controlled to be 7-9 when treatment is finished; S3,an alkaline enzyme is added in the wheat straw obtained after treatment in S2, and enzymolysis treatment is conducted; S4, the wheat straw leaves obtained after enzymolysis treatment in S3 is subjected to grinding treatment, and the biomechanical pulp is obtained. Accordingly, the idea of taking the wheat straw leaves as raw materials is put forward for the first time, a process of cooperating hotwater with alkaline complex enzyme is adopted for preparing the high-yield primary-color biomechanical pulp, and then the requirement of producing primary-color packaging paper and paper-based materials is met. The preparation method is simple, environmental friendliness and cleanliness are achieved, and the method has the good practical application value and industrial application prospect.

The invention provides a system and method for integrated roasting and smelting of waste lead battery desulfurization lead paste. The system includes a cylindrical melting pool, which is divided into a rough melting pool and a pre-refining melting pool by a cylindrical partition plate. The lower part of the dividing plate is provided with a through hole, the bottom of the rough smelting pool and the pre-refining molten pool are provided with air nozzles, the side of the pre-refining molten pool is provided with a lead slag outlet and a lead liquid outlet from top to bottom, and the top of the pre-refining molten pool is There is a flue, and a drying and roasting reaction tower is installed inside the flue. The top of the drying and roasting reaction tower is provided with a first feeding port, and the top of the pre-refining molten pool is provided with a second feeding port. The drying and roasting reaction tower and the rough melting pool pass through the filter block The rough smelting pool is connected with the flue through several first flue openings, and the pre-refining melting pool is connected with the flue through several second flue openings. The integrated roasting and smelting system for desulfurization and lead paste of waste lead storage batteries designed by the invention has the advantages of simple material operation process and high utilization of heat energy.

The invention discloses a pulping method and an auxiliary pulping preparation for papermaking pulp. According to the invention, a bio-enzyme and a high-molecular polymer with hydroxyl are added into the papermaking pulp; cellulose is degraded under the action of bio-enzyme and cellulose in cell walls of fibers, and hydroxyl of a high-molecular polymer and carboxyl of the fibers are subjected to hydrogen bond combination, so that more fibers are in contact combination, and the strength of the paper fibers can be improved while the pulping energy consumption is reduced.

The invention discloses a zanthoxylum armatum and zanthoxylum bungeanum Maxim deep processing and refining process and system, belongs to the technical field of edible oil production, and aims to solve the problems of low raw material utilization rate, low production efficiency and poor product quality of the existing refining process. According to the method, the chilli oil is refined at low temperature, so that the chilli oil does not volatilize fragrance easily, and the flavor retention property of the chilli oil is good; the method is suitable for refining fresh and dry zanthoxylum armatum and zanthoxylum bungeanum Maxim, and the retention property of the aromatic essential oil is good; the aromatic essential oil is recycled in a condensation recycling mode, refined products are enriched, and the utilization rate of raw materials is increased; when the chili oil is refined, the raw oil is preheated, so that the oil refining efficiency is greatly improved; meanwhile, the raw material is refined under negative pressure, so that the refining efficiency is improved, and the bright color of the product is ensured; and the whole refining system is high in streamline degree, the chili oil and the aromatic essential oil can be refined at a time, residual oil in the raw materials is recycled, and the production efficiency of enterprises and the utilization rate of the raw materials are greatly improved. The method is suitable for deep processing and refining of zanthoxylum armatum and zanthoxylum bungeanum Maxim.

The invention discloses a pretreating method for slurry before grinding. The pretreating method includes the following steps that 1, the type of white rot fungi is selected; 2, the slurry is sterilized; 3, the white rot fungi are added into the slurry for fermentation culture. Lignin can be effectively removed, grinding energy consumption can be reduced, and the physical property of finished paper can be improved. The physical property of the slurry treated through the method is improved, and the strength of the finished paper is improved.

The invention discloses a method for pulping and papermaking by utilizing sweet sorghum stalk vinasse. The method comprises the following four steps: step 1, carrying out alcohol fermentation and distillation, namely crushing 16 tons of sweet sorghum stalks with a water content of 70% through a pulverizer, adding cultured yeast seed liquid according to a proportion of 15% (v/m), and carrying out alcohol fermentation and distillation to obtain 1 ton of ethyl alcohol with a mass fraction of 95% and 16 tons of hot vinasse with a water content of 80% and a temperature of 94 DEG C; step 2, directlyfeeding the hot vinasse into a millstone mill pulping machine for fiber separation and brooming with a disc milling interval being 0.002 m and a pulping concentration being 20% (w/w) so as to obtain14 tons of pulp with a water content of 85%; step 3, weighing 2.1 tons of waste paper pulp boards, defibering the waste paper pulp boards by using a defibering device, and then feeding the defiberingwaste paper pulp boards into a Valley beater for beating to a beating degree of 36 oSR so as to obtain 10.5 tons of pulp with a water content of 80%; and step 4, blending the vinasse fiber paper pulpobtained in the step 2 and the waste paper pulp obtained in the step 3 according to a ratio of 1: 1, and carrying out papermaking to obtain 4.2 tons of raw paper. The method is used for pulping and papermaking by utilizing the sweet sorghum stalk vinasse.

The invention discloses a method for preparing biological mechanical pulp and a biomass compound fertilizer from leaf sheaths of wheat straw. The method comprises the following steps: S1, cutting pretreated leaf sheaths of wheat straw into sections, and carrying out treatment under the action of warm water and an alkaline compound enzyme; S2, adding hot water into the wheat straw leaf sheaths treated in the step S1, adding KOH to adjust a pH value, and performing saturated softening treatment; S3, grinding the wheat straw leaf sheaths softened in the step S2 to prepare the biomechanical pulp; S4, performing evaporation and concentration treatment on the wastewater obtained after treatment by the warm water and the alkaline compound enzyme, wastewater obtained after the saturated softening treatment and washing water for pulping treatment by adopting a multi-effect evaporator so as to obtain residues, and recovering heat energy for the saturated softening treatment in S2; and S5, mixing the residues with rotten leaves which cannot be processed and used in the step S1 and adjusting acid to prepare the fertilizer. According to the method, the requirements of production of primary-color packaging paper and paper-based materials can be met, byproducts can be recycled to prepare the biomass compound fertilizer, emission of solid waste is greatly reduced, and meanwhile, high-value full utilization of the wheat straw leaf sheaths is achieved.