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

The invention discloses a method for extracting lignin from a fibrous ethanol fermentation residue as a raw material and coproducing a phosphorus-potassium compound fertilizer. The method comprises the following steps: (1) adding a potassium-containing alkaline aqueous solution into the fermentation residue for extracting the lignin, and performing solid-liquid separation to obtain a solid residueand an alkali extract; (2) adding a decomposing agent into the obtained solid residue for decomposing treatment; (3) adjusting the pH of the alkali extract to 2-6 by using a phosphorus-containing alkaline aqueous solution, performing solid-liquid separation, and washing and drying a solid phase to obtain the lignin; (4) drying a filtrate to obtain the phosphorus-potassium compound fertilizer. Through gradient adjustment of the pH of the alkali extract, the fertilizer efficiency of the slow-release phosphorus-potassium compound fertilizer is controlled so as to meet needs of different crops onthe phosphorus-potassium compound fertilizer.

The invention discloses a resourceful treatment method for inorganic salts in ammonia desulphurization waste liquor. The method comprises the following steps: adding activated carbon into the ammonia desulphurization waste liquor for decolorization, blending decolorization filter residues and coal for coking, adding the decolorized waste liquor and sulfuric acid into a reactor, adding an oxidizing agent for stirring, performing evaporation drying to obtain a pretreated salt mixture, extracting the pretreated salt mixture for many times to obtain ammonium thiocyanate solids and SO2 by virtue of liquid sulfur dioxide, and recycling SO2. According to the method, ammonium thiocyanate in the inorganic salt mixture is extracted by virtue of the liquid sulfur dioxide, and an extraction process is simple, high in efficiency and low in energy consumption.

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 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 discloses a preparation method of bio-poly-alpha-alkene synthetic oil. The preparation method comprises the following steps: hydrolyzing wood fiber raw materials to obtain lignin semi-coke which comprises the following active ingredients in percentage by weight: 88-92% of semi-coke, and 8-12% of ash; vaporizing the lignin semi-coke to obtain crude synthesis gas; producing synthesis gas from the crude synthesis gas by adopting a transformation and elution technology; performing fischer-tropsch synthesis to produce primary fraction; and producing the bio-poly-alpha-alkene synthetic oil from the primary fraction by adopting two-segment polymerization and alkylation technology. The preparation method has the characteristics of being low-cost and easily available for raw materials, green in process, reliable in product performance, and the like, and is suitable for industrial production.

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 relates to a method for preparing a waste paper reinforcing agent from agricultural stalks, which uses an environment-friendly method without adding any chemicals to separate the parenchyma cells in the agricultural stalks, and then changes them by mechanical modification. shape, making it fibrillated. Adding modified parenchyma cells in the process of making corrugated base paper, box board and other products from waste paper can improve the strength performance of the product. This will effectively promote the benign development of industrial utilization of straw, which not only reduces environmental pollution but also creates economic value, with high economic and social benefits. The invention solves the problem that parenchyma cells are difficult to transform and utilize in the prior art, resulting in waste of resources, and provides a new approach for the full and high-value utilization of agricultural straw.

The invention provides a device and a method for preparing bioaviation fuel. The device comprises a biomass ketonization reaction system, a carbon chain elongation reaction system, a zeolite catalytic reaction system and an alkane and arene mixing system, wherein the biomass ketonization reaction system is used for catalytically converting biomass into ketones and other monofunctional compounds in an orientated manner, and separating the ketones from the other monofunctional compounds; the carbon chain elongation reaction system is used for converting the ketone platform compounds produced by the biomass ketonization reaction system into alkanes and cycloalkanes through aldol condensation, hydrogenation isomerism and other reactions; the zeolite catalytic reaction system is used for converting the other monofunctional compounds produced by the biomass ketonization reaction system into arenes through zeolite catalytic conversion; the alkane and arene mixing system is used for mixing the alkanes, the cycloalkanes and the arenes according to a certain ratio to obtain the final aviation fuel. With the method, full-component utilization of the biomass can be achieved, the aviation fuel containing the straight-chain alkanes, the cycloalkanes, the arenes and many other components can be prepared, and the ratio of the components is controllable; a novel way of converting the biomass into the aviation fuel is provided.