40results about How to "Realize full component utilization" patented technology

The invention relates to a method of extracting hemicellulose, cellulose and lignin from wood fiber raw materials and belongs to the field of utilization and technology of biomass resources of agriculture and forestry. In the method, the hemicellulose is extracted from the wood fiber raw materials by using hot water, then the lignin is extracted by using alkaline organic solvent under mild conditions; and residual ingredients rich in the cellulose are further used for enzyme hydrolysis to prepare fermentable sugar solution, thereby achieving full-ingredient utilization of the hemicellulose, cellulose and lignin in the biomass resources of the agriculture and forestry. The method has simple process, and is environmentally friendly, the organic solvent can be recycled, thereby promoting the development of the green agriculture and forestry, and the method has wide social and economic benefits.

The invention discloses a resourceful treatment method for soot from a copper melting furnace. The method comprises the following steps: separating lead-copper and tin-arsenic-zinc-antimony in soot byhigh-temperature alkaline cooking; introducing hydrogen sulfide into the obtained filtrate to precipitate tin-arsenic-antimony, then continuously introducing hydrogen sulfide to participate zinc, dissolving zinc participates by adding sulfuric acid, and performing concentration and crystallization to obtain industrial pure zinc sulfate; adding lead-copper to a hydrochloric acid solution, then adding sodium chlorate, and cooling the obtained solution to obtain lead chloride filtering residues and copper chloride filtrate; adding tin-arsenic-antimony filtering residues to hydrochloric acid fordissolution so as to obtain an antimony-containing solution, extracting the antimony-containing solution by adding an extraction agent, then performing reverse extraction with p ammonia water, performing concentration and crystallization on the obtained stripping solution to obtain antimony chloride, adding the obtained fifth filtering residues to a sodium sulfide solution for reaction, and then performing filtering so as to obtain tin-containing filtrate arsenic sulfide residues. By adopting the method provided by the invention, the separation and recovery of valuable metals in the soot are achieved, the recovery rate is high and the product finally obtained has high purity; and meanwhile, most of by-products thereof are recovered, the cost is low and the process is short.

The invention discloses a straw microwave hydrothermal-based super-capacitor activated carbon electrode material preparation system. A microwave low-temperature acidic hydrothermal device comprises astraw bin, a pulverizer, a phosphoric acid liquid storage tank, a microwave hydrothermal reaction kettle, a filter, a liquid product tank and a hydrothermal carbon storage tank. A high-temperature alkaline activation device comprises a potassium hydroxide storage tank, a first stirrer, a nitrogen cylinder, a tubular pyrolyzing furnace, a gas purification device, a gas storage tank, a hydrochloricacid tank, a clean water tank and an activated carbon storage tank. An electrode material preparation device comprises an acetylene black storage tank, an NMP storage tank, a PVDF storage tank, a second stirrer, a foamed nickel storage tank, a coater, a vacuum drier and a tablet press. By adopting the system, improvement is made on the production process of a biomass-based super-capacitor, all components of straw can be converted into clean energy and utilized, and the development and utilization of a high-performance super-capacitor can be achieved.

The invention discloses a slag modification reducer. The slag modification reducer is shaped like spherical particles with a particle diameter of 10-30 mm and comprises 100 parts by weight of a fusionagent, 5-24 parts by weight of a reduction agent, 8-18 parts by weight of a binder and 0-10 parts by weight of a fluxing agent. The invention also discloses a method for Fe recovery with slag waste heat. The method comprises the following steps: (a) during a course when slag is discharged from a smelting furnace and poured into a heat-preservation container, the slag modification reducer is addedinto a slag flow, and a modified reduction reaction takes place; and (b) after the slag completes the reaction with the modification reducer, solid slag in the heat-preservation container is crushed,and metal Fe particles and/or Fe ore concentrate powder are obtained through magnetic separation. The method aims at the fact that the slag contains a lot of waste heat and residual Fe resources, directly conducts high-temperature waste heat modification of the slag, adjusts chemical components and a smelting temperature of the slag, reduces reduction potential energy of Fe oxides and then uses amiddle-low temperature roasting temperature and a grinding-separation technology to realize efficiency recovery of Fe in the slag.

The invention relates to a method for recovering metal lead from waste lead-containing glass and producing water glass. The method comprises: placing waste lead-containing glass, a flux, a reducing agent and a catalyst into a high-temperature reaction furnace according to a certain ratio, and carrying out a reaction to reduce out lead while produce molten residue; hydrolyzing the molten residue, and separating to obtain a hydrolyzing liquid and dissolving residue; adding a precipitant to the hydrolyzing liquid to precipitate out lead sulfide and obtain crude water glass; adding an acid solvent to the dissolving residue to neutralize; carrying out dissolving washing on the obtained acid dissolving residue by using the crude water glass again, and separating and recovering the final crude water glass and generating the tailing residue; adding a precipitant and a desulfurizing agent to the final crude water glass to prepare the refined water glass, and recovering the precipitated lead sulfide; and washing the tailing residue, and carrying out acid dissolving treatment again. According to the present invention, with the method, the metal lead can be recovered from the waste lead glass and the water glass can be produced; and the process is simple and is easy to performed, the solid waste emission does not exist, the utilization of the whole components of the lead-containing glass waste is achieved, and the economic benefits are significant.

The invention discloses a method for preparing sulfuric acid by treating semi-dry desulfurization ash and a high-sulfur iron material through a sintering process. According to the method, semi-dry desulfurization ash, a high-sulfur iron material, quick lime and solid fuel are proportioned, mixed and granulated to obtain a ball material, the ball material is sequentially subjected to material distribution, ignition and sintering, high-sulfur-dioxide-concentration flue gas generated in the middle of a sintering machine in the sintering process is used for preparing sulfuric acid, and meanwhile a sintered material is obtained. According to the method, all-component recycling of the semi-dry desulfurization ash and efficient utilization of the high-sulfur iron material are achieved, sulfur dioxide flue gas generated in the sintering process is concentrated in the middle of the sintering machine and used for preparing sulfuric acid, the content of sulfur dioxide in flue gas generated in other parts of the sintering machine is low, and the flue gas after acid making can meet the emission requirement after being denitrated.

The invention discloses a method for utilizing all components of artemisia selengensis straws. Waste artemisia selengensis straws are taken as raw materials and solvent extraction is combined with adsorbent resins for refining, so that high-purity phenolic acids and flavonoid matters can be extracted and separated; and meanwhile, the extracted residue is subjected to anaerobic digestion so as to prepare methane and then the residue after preparing methane is prepared into organic fertilizer. According to the method provided by the invention, the use value of the artemisia selengensis straw is increased and the method is easily industrial popularized.

The invention relates to a method for preparing an antioxidant by using crop straws. The method comprises: (1) raw material treatment, (2) treatment with high-temperature liquid-state water, (3) precipitation of hydrolyzate, and (4) separation and drying of precipitated substance, wherein the hydrolyzate in an acid-resistant container is layered after the step (3), the upper layer is supernatant,the lower layer is a precipitated material, the supernatant is removed from the container, the precipitated material is retained at the bottom portion of the container, and the substance obtained through spray drying or freeze drying is the antioxidant. According to the present invention, corn, wheat, rice and other large-scale crop straws with rich source are used as raw materials, and the treatment is performed with the high-temperature liquid-state water with no chemical adding, such that the preparation process is environment-friendly, the production process is simple, and the practicalityis strong; and the antioxidant prepared by using method can significantly scavenge DPPH free radicals, has remarkable anti-oxidation ability, and can be used in the fields of feeds and polymer materials.

The invention discloses a biomass-based papermaking reinforcing agent prepared by taking agricultural residues as raw materials. A preparation method comprises the following steps: removing non-plant impurities in the agricultural residue raw materials, and treating the raw materials; carrying out autocatalytic hydrolysis treatment on agricultural residues obtained after material preparation to loosen the tissue structure of the raw materials; grinding a material obtained after autocatalysis treatment to enable the size of the material to reach a cellular level; carrying out biological enzyme treatment on the roughly ground material to further destroy the cell wall structure of the raw material; and carrying out micronization treatment on the material subjected to enzyme treatment to make cell walls microfibrillated so as to obtain a product that is the biomass-based reinforcing agent. In agricultural residues such as corncobs, rice husks, bagasse pith, sweet sorghum residue pith and corn straw pith, large-scale high-added-value utilization is not performed on most of the agricultural residues due to low fiber cell content, so that the problem of high-added-value conversion and utilization of the raw materials is solved, and a new way is provided for full utilization of the agricultural residues.