41results about How to "Reduced process flow" patented technology

The invention discloses a manufacturing method of water-proof and oil-proof coloured polyester staple fibers, aiming at solving the problems of nonwoven fabric deformation and coloured polyester staple fiber discoloration of the traditional coloured nonwoven fabric in the process of obtaining water-proof and oil-proof properties through padding finishing. In the invention, water-proof agents and oil-proof agents are attached to the surfaces of the coloured polyester staple fibers step by step and layer by layer so as to enable to the surfaces of the coloured polyester staple fibers to achievethe water-proof and oil-proof properties; a nonwoven fabric per se, produced by using the coloured polyester staple fibers, has water-proof and oil-proof functions, without being subjected to paddingfinishing to obtain the water-proof and oil-proof functions, and has the characteristics of difficulty in deformation and difficulty in discoloration of the coloured polyester staple fibers when dried; and in addition, the process flow is simplified, the energy consumption is lowered and the production cost is reduced.

The invention discloses a method for preparing bio-oil reactants and bio-oil from lignocellulosic biomass. The present invention adopts the method of dilute acid hydrolysis, and utilizes the principle that dilute acid solution has a strong hydrolysis effect on hemicellulose in a boiling water bath, and first converts hemicellulose in lignocellulosic biomass raw materials into reducing sugars with simple structure, Thus, the optimization of the bio-oil reactant components is realized, the conversion path of hemicellulose is changed, and the types of chemical components in the prepared bio-oil are significantly reduced, and the application value of the bio-oil is improved.

The invention discloses a new technology to manufacture ethandiol, which is characterized by the following: liquefying starch emulsion; saccharifying; filtering; decolouring; separating through simulated mobile chromatogramic separating system; obtaining DX 99-99.7% glucose slurry; evaporating DX value glucose slurry to 50% as dried material; adopting ruthenium or nickel as catalyst; proceeding hydrogenation reaction to obtain the sorbitol solution; hydrogenolyzing for certain time under one catalyst of Ru, Ni / Ru and Co / Re to produce compound with ethandiol, glycerin and propanediol; cooling multi-alcohol; sedimenting; filtering; separating; decolouring; separating ethandiol, glycerin and propanediol.

A memory and a formation method thereof are disclosed. The method includes the following steps: a substrate is provided, the substrate includes erasure regions, floating gate regions and word line bitline regions, wherein the floating gate regions are located on both sides of the erasure regions, and the word line bit line regions are located on both sides of the erasure regions and the floatinggate regions; a floating grid electrode structure membrane and a dielectric layer located on the floating grid electrode structure membrane are formed on the substrate, and a first opening exposing the floating grid electrode structure membrane of the floating gate regions and the word line bit line regions are disposed in the dielectric layer; a first side wall is formed on the side wall of the first opening; a control grid electrode membrane is formed on the bottom of the first opening; a second side wall is formed on the side wall of the first side wall; the control grid electrode membraneand the floating grid electrode structure membrane exposed by the first side wall, the second side wall, and the dielectric layer are removed to form a floating gate structure layer, a control grid electrode layer and a second opening; the dielectric layer and the floating gate structure layer on the erasure regions are removed to form a third opening and a floating grid electrode structure; and an erasure grid electrode structure is formed in the third opening. The method enables the production efficiency of the memory to be improved.

The invention relates to a sintering smoke self-catalyzing denitrifying system by coupling and utilizing residual heat of sintering smoke, which solves the problems of large investment, high running cost and lower denitrifying efficiency in the existing denitrifying system. The sintering smoke self-catalyzing denitrifying system adopts the technical scheme that the sintering smoke self-catalyzing denitrifying system comprises a sintering machine, wherein air bellows are arranged under a trolley of the sintering machine; an exit of the bottom part of each air bellow is communicated with a main flue; the sintering machine is sequentially provided with an ignition section, a machine head section, a flue gas quick heating section and a machine tail section along the moving direction of the trolley; the main flue is sequentially connected with a denitrifying reactor of a fluidized bed through a denitrifying flue gas heat exchanger shell or tube, and a flue gas heater; liquid ammonia spray nozzles are respectively arranged in the air bellows under the machine tail section to the flue gas quick heating section area, and in the flue gas exit pipeline of the flue gas heater. The sintering smoke self-catalyzing denitrifying system has the advantages that the system is simple, the additional purchase of the catalyst is avoided, the effective denitrifying and sintering process is realized, the recycling rate of residual heat is high, the energy-saving and consumption-reducing effects are realized, the land occupation area is small, and the equipment investment and running cost are low.

The invention discloses a one-step production method of chlorinated polyethylene. The method comprises the following steps: adding 10-20 parts by mass of high-density polyethylene to 80-90 parts by mass of water to generate a chlorination in the presence of an emulgator, a dispersing agent, an initiator and chlorine gas, adding 5-7 parts by mass of calcium oxide in batches in the chlorination process, thus generating chlorinated polyethylene resin and an aqueous solution of calcium chloride, wherein the addition speed of calcium oxide has to ensure that the pH value of the reaction system is controlled to be between 7.0 and 8.5; centrifuging and drying the obtained chlorinated polyethylene resin to obtain a finished chlorinated polyethylene product; and concentrating and drying the aqueous solution of calcium chloride to obtain a byproduct calcium chloride. The one-step production method of chlorinated polyethylene has the advantages that the process flow is simplified, the space occupied by devices and investment in devices are reduced, and the production cost is lowered; in the preparation process of chlorinated polyethylene, waste acid water is made a full use and prepared into a byproduct, and therefore the clean production level is high and relatively high economic benefit can be created.

The invention relates to an autocatalytic denitrification process of sintering smoke dust by coupling utilization of smoke dust waste heat. According to the technical scheme, sintering smoke dust penetrates a sintering material layer, a bottom layer, a bottom grate of a sintering machine trolley and bellows under the trolley and enters a main flue under the draft action of a high-pressure blower; a sintering machine is divided into an ignition section, a machine head section, a smoke rapid heating section and a machine tail section in the traveling direction of the sintering machine trolley sequentially, the sintering smoke dust flows out of a main flue, passes through a denitrification smoke heat exchanger and a smoke heater sequentially and enters a fluidized bed denitrification reactor; liquid ammonia is sprayed into the bellows under the machine tail section, the bellows under the smoke rapid heating section and a smoke outlet pipe of the smoke heater, so that the sintering smoke dust is subjected to a denitrification reduction reaction with ammonia gas under the catalysis effect of particles which are rich in iron oxide and carried by the sintering smoke dust. The process has the advantages of simple process, no purchased catalyst, high recovery of waste heat, small floor area, low equipment investment and low operation cost, is energy saving and reduces consumption.

The invention relates to a preparation method of γ-substituted hexadienoic acid, which is characterized in that: (1) at 10-40°C, add a solvent, a catalyst, and a catalyst assistant to a reaction vessel, stir, and introduce oxygen, and add 1-( 2-furyl)-1-alkylcarbinol, control catalyst: catalytic promoter: the molar ratio of 1-(2-furyl)-1-alkylcarbinol is 0.0001~5:0.0001~3:100, and the reaction temperature is 0~200℃, pressure 0.1~20MPa, reaction 1~74h; solvent is a mixture of water phase and organic phase with a volume ratio of 1:0.01~3, the water phase is a phosphate acid solution, and the organic phase is a reaction inert solvent , the catalyst is a palladium compound, and the catalytic assistant is an amine or a phosphine compound; (2) cooling the reaction vessel to room temperature, adding an organic solvent for extraction, and performing vacuum distillation on the organic phase. The invention has the advantages of avoiding technical and economic disadvantages in the existing synthetic route, simplifying the technological process, reducing consumption and emission, reducing energy consumption and cost, and being suitable for industrialized production with expanded production capacity.