56results about How to "The production process is compact" patented technology

The invention relates to a clean technique for co-producing xylose, xylitol and arabinose from agricultural and forestal waste, belonging to the field of utilization of agricultural and forestal waste. The technique comprises the following steps: pretreating and preprocessing the raw material, and hydrolyzing in a thermophilic digestion mode to prepare a hemicellulose hydrolysate; after centrifugalizing to remove solid residues, carrying out TiO2-loaded activated carbon photocatalysis or ion exchange resin decolorization and detoxification treatment on the hydrolysate; carrying out MVR (mechanical vapor recompression) concentration treatment and gradient-cooling crystallization to obtain a xylose product and a xylose mother solution; fermenting L-arabinose unconverted xylitol fermentationhigh-yield strain xylitol by using the xylose mother solution as the medium to produce the xylitol; centrifugalizing to remove thalli, and carrying out decolorization and desalting treatment by membrane-process or resin adsorption; separating by using a simulated moving bed or chromatographic separation technology to obtain a xylitol phase and an L-arabinose phase; and carrying out MVR or vacuum concentration treatment on the two phases, and crystallizing in a gradient programmed cooling mode to respectively obtaining a xylitol product and an L-arabinose product, wherein the two mother solutions can be recycled.

The invention relates to a clean and high-efficiency production process for preparing xylose and L-arabinose and belongs to the field of application of wastes of agriculture and forestry. The production process comprises the following steps of: performing pretreatment on raw materials; hydrolyzing the raw materials in a high-temperature cooking mode; performing neutralizing treatment and performing centrifugal separation on solid slag to obtain xylose or xylooligosaccharide hydrolyzate; adding coarse enzyme solution into xylooligosaccharide solution to hydrolyze to obtain xylose solution; treating the hydrolyzate by Angle yeast; purifying by using active carbon and resin; performing recompression and concentration treatment on the purified hydrolyzate by using a mechanical vapor recompression (MVR) machine; crystallizing the concentrated solution in a gradient program cooling mode to obtain xylose products and xylose mother solution; separating the xylose mother solution by a simulated moving bed or a chromatographic separation technology to obtain a xylose phase and an L-arabinose phase; returning the xylose phase to the xylose solution to concentrate and recrystallize; reusing the xylose mother solution; performing MOVR concentration treatment on the L-arabinose phase and crystallizing in a gradient program cooling mode to obtain L-arabinose products; and reusing the L-arabinose mother solution.

The invention relates to a production method of austenitic stainless steel, which comprises the following steps of: a, mixing different low-grade nickel-chromium pig iron in an electric furnace, blowing, desiliconizing and decarbonizing to obtain a stainless steel mother liquor; preparing Cr to be about half of a finished product according to the content requirement of a stainless steel finished product, and properly preparing Ni in the stainless steel mother liquor in the electric furnace by using a grade high-carbon ferrochrome; b, adding the stainless steel mother liquor obtained in the step a to an AOD furnace, adding the high-carbon ferrochrome, laterally blasting air, oxidizing by using a gun and flowing out slag; c, adding metallurgical lime, high-carbon ferrochrome, ferronickel and waste steel to carry out primary decarbonization and secondary decarbonization, adjusting carbon content to the level required by the finished product; and e, finely adjusting components and adjusting temperature in an LF furnace to obtain the austenitic stainless steel. The invention has the advantages of low energy consumption, low cost and stable product quality.

The invention provides a compact production method of austenitic stainless steel. According to the method provided by the invention, the original four production lines for production of ferronickel, ferrochromium and manganese-iron alloys as well as mixed smelting steel-making are combined into one production flow, and nickel laterite, ferrochromium concentrate, manganese ore and copper slag are directly subjected to mixed sintering and smelting to produce the austenitic stainless steel, thus simplifying the process flow, reducing a sintering ignition temperature and the proportion of carbon, and reducing energy consumption and reducing production cost; and moreover, stainless steel mother solution containing chromium, nickel, manganese and copper is directly obtained by smelting, and the obtained thermal stainless steel mother solution is directly blown in a converter to produce stainless steel, thus further reducing heat loss, decreasing energy consumption, facilitating simplification of a production line of austenitic stainless steel, avoiding the problem of increase of equipment management and maintenance costs due to decentralized flow, and opening up a novel way for a production process of the austenitic stainless steel.

The invention discloses a closed-extrusion and molding method of a flange and belongs to the technical field of pressure machining of metal. The molding method comprises the specific steps of: firstly, preparing a flange blank; then carrying out induction heating on the flange blank at a temperature in range of 950-1200 DEG C to obtain a flange upset piece with an upset end part; putting the flange upset piece into a closed-extrusion and molding mould and then carrying out primary molding by utilizing a closed radial extrusion method to obtain an extruding piece of the flange; and carrying out shaft neck reverse extrusion and molding on the extruding piece, and punching inner holes and fins, and finally machining to obtain the flange. The closed-extrusion and molding method disclosed by the invention utilizes a double-floating concave mould structure of a belt lock hook mould closing device, and the flange upsetting piece in a closed type cavity can be extruded in a radial direction by upper and lower convex moulds. The method disclosed by the invention has the characteristics of compact production process, high material utilization rate, good flange quality and low production and manufacturing cost.

The invention discloses a preparation method of an A2-level inorganic mineral plate, high-strength toughening glue and a preparation method of the high-strength toughening glue. The preparation method of the A2-level inorganic mineral plate comprises the following steps: selecting the following powder by weight: 15-30 parts of aluminium hydroxide, 10-20 parts of magnesium hydroxide, 40-50 parts of silica powder, 60-70 parts of quartz sand, 10-20 parts of diatomite, 10-20 parts of clay, 10-15 parts of talcum powder, and 2-3 parts of glass fiber; adding the high-strength toughening glue and water for mixing, and gradually increasing the temperature to repeatedly roll and brake after uniformly mixing to obtain the A2-level inorganic mineral plate. The high-strength toughening glue is self-made, so that the sticking of the glue is excellent; the plate is prepared from inorganic minerals, is non-toxic and environment-friendly, and is wide in raw material source, the safety of the plate is improved, and the production cost is reduced; through the repeated braking and rolling, air in the plate is easily discharged from the plate, the rolled plate is compact, the production process is simple, and the production is easy.

The invention discloses an ultrafiltration/nanofiltration double-membrane high-efficiency pumpkin oligosaccharide purifying method. According to the method, an ultrafiltration technology and a nanofiltration technology are applied to a pumpkin oligosaccharide production technology, so that the purpose of purifying pumpkin oligosaccharide in high efficiency is achieved. Macromolecules of protein, polysaccharide and the like are intercepted by an ultrafiltration membrane, and a nanofiltration membrane penetrates through micromolecules of inorganic salt, monosaccharide and the like to achieve a concentrating effect. The method disclosed by the invention achieves separation, refining and concentration of the pumpkin oligosaccharide through the utlrafiltration technology and the nanofiltration technology, has a compact production technology, is convenient to operate and has moderate processing conditions, high preparing efficiency, low energy consumption and a good oligosaccharide separation effect. An ultrafiltration and nanofiltration double-membrane technology is an ideal pumpkin oligosaccharide purifying method, can remove macromolecular impurities and micromolecular impurities in high efficiency and improves concentration and quality of a pumpkin oligosaccharide product.

The invention discloses a manufacturing method of an environment-friendly pressure-sensitive adhesive material, and particularly relates to the technical field of adhesive material preparation. The environment-friendly pressure-sensitive adhesive material comprises a pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer is composed of a base material, a pressure-sensitive adhesive and release paper, the pressure-sensitive adhesive is arranged on one side of the base material, and the release paper is arranged on the side, away from the base material, of the pressure-sensitive adhesive. By using poly(butylene succinate), paraffin, a tackifying emulsion, synthesized plant ester, a PVM/MA decadiene cross-linked polymer, polyoxyethylenealkylphenol ether, alkyl modified organosiloxane and a high-viscosity foam defoamer as production raw materials, a mixed filler and a mixed solvent are added, a little poisonous gas is generated in the pressure-sensitive adhesive production process, the environment is not polluted through purifying treatment in an activated carbon adsorption tower, a pressure-sensitive adhesive cut-off material is put into the filler to continue beingused, thus the resource utilization rate is increased, and the pressure-sensitive adhesive is degradable plastic, safe and environmentally friendly.

The invention discloses a graphene disinfectant and a preparation method thereof. The method comprises the following steps: 1, preparing a water-soluble graphene dispersion; 2, preparing a water-soluble graphene dispersion liquid; 3, adding a dispersing agent into the water-soluble graphene solution obtained in the step 2, and uniformly stirring; 4, continuously adding a surfactant into the solution, continuously stirring until the solution is uniform, and defoaming; and step 5, standing and cooling to room temperature, and filling into a container to obtain the graphene disinfectant. The invention also provides the graphene disinfectant prepared by the method; the main components adopted by the invention comprise water-soluble graphene, a food-grade dispersing agent, a food-grade surfactant and deionized water. The disinfectant has the characteristics of environmental protection, good sterilization effect, long antibacterial time, no pungent smell, low production cost and the like, and can be applied to daily life areas or public places.

The invention relates to the technical field of the production of microcrystalline glass-ceramic composite bricks, and especially relates to a method for distributing materials on the surface of a microcrystalline glass-ceramic composite brick. The method mainly comprises the steps of distributing a template, distributing a silk screen and distributing a belt. The method realizes the stable and unique pattern, good fluency, stable quality and elegant appearance of the materials distributed on the surface of the microcrystalline glass-ceramic composite brick, and also realizes a high artistic decoration effect; and the method has the advantages of simple production process flow, simplicity and low cost of a tool used in the method, and easy operation.

The invention provides a preparation method of dendrobium nobile stem drink. The method comprises the following steps: 1) freezing dendrobium nobile stems; 2) performing wall breaking treatment on the frozen dendrobium nobile stems to obtain crushed dendrobium nobile stems; 3) mixing the crushed dendrobium nobile stems with a solvent, and performing wet-type superfine crushing to obtain dendrobium nobile stem liquid; 4) precipitating the dendrobium nobile stem liquid and conducting filtering to obtain dendrobium nobile stem juice; and 5) blending the dendrobium nobile stem juice into dendrobium nobile stem drink. The preparation method provided by the invention has the advantages that the dissolution rate is high, the effective active ingredients are easily absorbed by the human body, the utilization degree is high, the cost is relatively low, etc.

The invention provides a high-strength-toughness high-boron stainless steel thin plate and a preparation method thereof. The stainless steel thin plate comprises the ingredients of, in percentage by mass, 2.0-2.5% of B, less than 0.01% of C, 16.0-18.0% of Cr, 15.5-17.5% of Ni, 1.0-2.0% of Mn, 0.5-1.0% of Si and the balance Fe, wherein Nieq is larger than 1.1 Creq-7.0, the tensile strength is 700-850 MPa, and the room temperature extending rate is 12.5-15.5%. The preparation method comprises the steps that (1), liquid steel smelting is performed; (2), liquid steel enters a tundish to be continuously-cast into thin strips; (3), single pass hot rolling is performed after air cooling is performed to 900-1100 DEG C, and the press down rate is 15-40%; (4), coiling is performed after water cooling is performed to 600-700 DEG C; and (5), annealing treatment is performed under a protective atmosphere condition after uncoiling, and then flattening treatment is performed. By means of the high-strength-toughness high-boron stainless steel thin plate and the preparation method thereof, the alloy element segregation degree is improved, the high-boron stainless steel hot rolled plate with smoothappearance and no edge crack is obtained, the high-strength-toughness high-boron stainless steel thin plate and the preparation method thereof are compact in production procedure and less in fabrication working procedure, and the production cost can be significantly lowered.

The application aims at providing an automatic release appliance for an optical lens. The automatic release appliance for the optical lens comprises a frame, a charging platform and a discharging platform, wherein the charging platform and the discharging platform are arranged on two sides of the frame respectively; the automatic release appliance for the optical lens also comprises a temperature-controlled release device; the temperature-controlled release device comprises a water cooler and a constant-temperature water tank which is arranged at the bottom of the frame; the water cooler is mounted outside the frame; a circulating water pump used for circulating cold and hot water is arranged between the water cooler and the constant-temperature water tank. Compared with the prior art, the automatic release appliance for the optical lens has the advantages that the temperatures of a heat source and cold water can be controlled precisely and in time, the release rate of the optical lens is high, the loss of a mold is low, a water source is wasted little, the structure is compact, the floor area is less, and the like.

The invention discloses a soybean peptide with an alpha-glucosidase activity inhibition function, a preparation method and application. Soybean protein isolate powder is taken as a raw material, and the soybean peptide with the strong alpha-glucosidase activity inhibition function is prepared through alkaline protease enzymolysis, isoelectric point enzyme deactivation centrifugal separation, pepsin enzymolysis, ultrafiltration, nanofiltration and drying. The technology aims at preparing the soybean peptide with the strong alpha-glucosidase activity inhibition function, the target peptide is efficiently obtained by fully utilizing an enzyme combination technology and integrating separation technologies such as isoelectric point centrifugal separation, ultrafiltration and nanofiltration, theproduction technology process is scientific, compact and energy-saving, the preparation method is easy to operate, and the soybean peptide with the alpha-glucosidase activity inhibition function issuitable for industrial production.

The invention relates to the technical field of hoisting and lifting machines, and discloses a double-roller rope pressing mechanism for winch rope arrangement. The problems that rope disorder, rope pressing and rope biting are easily caused for winch rope arrangement in the current market, a steel wire rope is large in friction resistance, is easily abraded by rollers, is short in service life, complex in structure, not convenient to disassemble, not convenient to maintain, complex in process, unfavorable to producing and purchasing, high in cost and not convenient to popularize, dirt removalcannot be achieved, steel wire rope corrosion is serious, the winding space is influenced, and winding is not convenient are solved. The double-roller rope pressing mechanism comprises a base, a front support is installed at the top of the base, and a right steel rope pressing device is installed on one side of the front support. The double-roller rope pressing mechanism has the advantages of being reasonable in design, capable of achieving orderly rope arrangement and preventing rope loosening at the same time, simple and compact in equipment structure, convenient to disassemble and assemble, convenient to maintain, small in steel wire rope resistance, not prone to abrasion, long in service life, low in production cost, convenient to apply and popularize, capable of removing dirt on a steel wire rope and reducing surface corrosion of the steel wire rope and stable in steel wire rope winding space, and convenient to wind.

The invention relates to a boron-containing stainless steel thick plate with excellent plasticity and toughness and a preparation method thereof. The boron-containing stainless steel thick plate comprises the following components in percentage by mass: 18.0-20.0% of Cr, 12.0-15.0% of Ni, 0.2-2.0% of Mn, 0.5-1.5% of B, less than 0.5% of Si, less than 0.02% of C and the balance of Fe. The thicknessis 20-80mm, the tensile strength is more than or equal to 550MPa, the room-temperature ductility is more than or equal to 18%, and the room-temperature impact toughness is more than or equal to 200KJ/m <2>; the method comprises the following steps: (1) smelting molten steel; (2) roughly rolling the casting blank after soaking and heat preservation; (3) forming a V-shaped groove in the rough rolling blank to prepare a single body; stacking the plurality of single bodies, and carrying out vacuum welding; (4) welding plain carbon steel plates at the front and rear ends of the composite blank; (5)heating to 1100-1150 DEG C, carrying out heat preservation, and carrying out multi-pass hot rolling; and (6) cutting the end part of the plain carbon steel, carrying out solution treatment, and carrying out air cooling to room temperature. By means of the method, homogenization and fine control over boride in the finished plate are achieved, and the plate shape and the edge cracking degree of theboron-containing stainless steel thick plate are improved; the process production flow is compact, and mechanization and automation are convenient to achieve.