46results about How to "Realize large-scale industrialized continuous production" patented technology

The invention provides a pressing-low-temperature continuous phase-change castor oil extraction method. According to the method, a pressed, back-dried, and crushed castor seed raw material is placed into an extraction kettle; under a condition with a pressure constantly lower than 4MPa and a temperature constantly lower than 90 DEG C, the extracting agent is compressed into a liquid; the extracting agent flows through the extraction kettle with a certain flow rate, such that castor oil is extracted; the material is delivered into a resolution kettle; heating and pressure reducing are carried out, such that the extracting agent is changed into a gas phase; instant compression is carried out, the extracting agent is changed into liquid, and flows through the extraction kettle, such that the material is extracted again. The steps are repeated several times. The extracting agent is one of propane, butane, high-purity isobutane, R134a, dimethyl ether, liquefied petroleum gas, and sulfur hexafluoride. The method provided by the invention has the advantaged of high efficiency, no solvent residue in product, and high aroma component retention rate of a supercritical extraction method. Extraction pressure and resolution pressure of the method are lower than those of supercritical extraction. The method also has the advantages of large extraction volume, large-amount batch production, low production cost, and the like of a conventional solvent extraction method.

Disclosed are a production method of continuous polymerization melt direct spinning functional polyamide fiber and the functional polyamide fiber. The method comprises: continuously conveying the functional powder slurry pre-dispersion prepared by water, caprolactam and functional powder to a functional powder slurry multi-stage grinding device for grinding and dispersing; the obtained functional powder slurry is mixed with caprolactam melt and The catalyst is mixed evenly by the dynamic mixer, and the temperature is adjusted by the heat exchanger, and then enters the hydrolysis reactor for ring-opening reaction; the obtained functional caprolactam oligomer melt is removed by the oligomer melt dehydrator, and then enters the pre-polymerization reactor for addition polymerization reaction; the obtained functional polyamide prepolymer melt goes through the prepolymer melt dehydrator to remove residual moisture and then enters the post-polymerization reactor for polycondensation reaction; the obtained functional polyamide melt passes through the thin film evaporation system to remove caprolactam monomer It is directly transported to the spinning box for spinning to obtain functional polyamide fibers. The functional powder in the functional polyamide fiber is highly uniformly dispersed.

The invention provides a preparation method of a purple perilla seed oil microcapsule. The preparation method comprises the following steps: weighing wall materials: 10-15% of saccharose, 55-60% of modified starch and 25-40% of maltodextrin in percent by weight; adding water to prepare wall material aqueous liquor with the content of solids of 33%; after sterilization, adding purple perilla seed oil at 45-50 DEG C in a mass ratio of the wall material and purple perilla seed oil of 1:(1-1.2); preparing an emulsion with the content of solids of 45-50%; and homogenizing, spraying and drying to obtain the purple perilla seed oil microcapsule. The purple perilla seed oil microcapsule prepared by the invention is high in oil content better in quality, still stable in physicochemical property of a product and high in bulk density of the product. The preparation method disclosed by the invention is simple in process flow, strong in operability, low in production cost, free from pollution and good in repeatability, and can realize industrialized continuous production on a large scale.

The invention provides a method for extracting fructus perillae oil through continuous phase transition, which comprises the steps of putting the dried ground fructus perillae raw material into an extraction kettle; compressing an extraction agent into liquid under the conditions that the extraction temperature is 35-55 DEG C and the extraction pressure is 0.5-2MPa; enabling the liquid to flow through the extraction kettle at a flow speed of 100-150L / h, and continuously extracting for 50-120 minutes; after extracting the fructus perillae oil, enabling the fructus perillae oil to flow into a resolving kettle, wherein the resolving temperature is 65-75 DEG C, and the resolving pressure is 0.1-0.4MPa; heating and reducing pressure of the extraction agent so that the extraction agent phase is changed into gas; performing intermediate compression to change the gas into liquid which flows through the extraction kettle again, and performing secondary extraction on the material; circulating for multiple times. The method provided by the invention has the advantages of efficient supercritical extraction, no solvent residue in product and high retention rate of aroma components; moreover, the extraction pressure and the resolving pressure are lower than the supercritical values, and the method also has the characteristics of large extraction volume of conventional solvent, large batch treatment capacity, low production cost and the like.

The invention provides a continuous phase-changed extraction method for orange peel oil. The method comprises the following steps of: placing dry crushed orange peel raw materials into an extraction kettle; compressing an extraction agent into a liquid under the condition that the pressure and the temperature are always lower than the critical pressure and the critical temperature of the extraction agent; enabling the extraction agent to flow through the extraction kettle at the flow speed of 100-150L / h under the conditions that the extraction temperature ranges from 35 DEG C to 55 DEG C, and the extraction pressure ranges from 0.5MPa to 2MPa, and continuously extracting for 50-120min; after the orange peel oil is extracted, enabling the extraction agent to flow into a liberation kettle for liberating at the temperature of 65-75 DEG C and the pressure of 0.1-0.4MPa; heating and carrying out pressure-reduced phase change on the extraction agent to enable the extraction agent to become a gas, then, immediately condensing the gas to enable the gas to become a liquid, and enabling the liquid to flow through the extraction kettle for extracting the materials again; and circulating many times in such a way. The continuous phase-changed extraction method has the advantages of high supercritical extraction efficiency, no solvent residues in products and high aroma component retention rate; in addition, the extraction pressure and the liberation pressure are lower than the supercritical pressure and temperature; and meanwhile, the continuous phase-changed extraction method has the characteristics of large extraction volume, high mass handling capacity and low production cost of a conventional solvent.

The invention provides a method for removing ricin in castor pulp by continuous phase-change extraction, which comprises the following steps: putting a castor pulp raw material into an extraction kettle, and carrying out continuous extraction at 45-95 DEG C under the extraction pressure of 0.15-0.95 Mpa for 100-250 minutes at the flow rate of 130-210 L / hour; and after extracting the castor pulp, enabling the liquid to flow into a resolution kettle, and resolving at 70-95 DEG C under the pressure of -0.15 to -0.05 Mpa. The extractant is heated under reduced pressure into a gas phase and instantly cooled into a liquid, flows through the extraction kettle, and is subjected to toxin removal; and the cycle is repeated many times. The extractant is 30-100% methanol, ethanol and butanol. The method has the advantages of high toxin removal efficiency, almost no solvent residue and short time, and has the characteristics of high conventional solvent extraction capacity, high batch treatment capacity, low production cost and the like.

The invention relates to a preparation technology of a centimetre wave-millimeter wave compatible absorbing material. The material is of five-layer structure, and a substrate is an irregular surface made of any material; the topmost layer is a first layer, and mainly consists of a W-shaped hexagonal ferrite absorbing agent and an acrylic resin adhesive; a second layer is composed of a carbonyl iron powder absorbing agent and an epoxy resin adhesive, and a third layer is composed of a Fe85Si1Al6Cr8 nanometer crystal thin absorbing agent and an epoxy resin adhesive; a fourth layer is composed of a polycrystal iron fibre absorbing agent and an epoxy resin adhesive; and a fifth layer is composed of a chopped carbon fiber, a sooty mixed absorbing agent and a polyurethane adhesive. A preparation process comprises the following steps: firstly, covering and preparing a bottom fifth-layer medium coating on the substrate; and then successively covering and preparing a fourth-layer medium coating, a third-layer medium coating, a second-layer medium coating and a first-layer medium coating, wherein the coating preparation of each medium coating is as follows: uniformly stirring a coupling agent, a diluting agent and the absorbing agent of each layer, standing, then adding the adhesive of each layer, uniformly stirring to obtain a paint, coating the paint, and curing, thus obtaining the centimetre wave-millimeter wave compatible absorbing material.

Disclosed are a functional polyamide and a continuous production method thereof. The method comprises: continuously conveying the functional powder slurry pre-dispersion prepared by water, caprolactam and functional powder to a functional powder slurry multi-stage grinding device for grinding and dispersing; the obtained functional powder slurry is mixed with caprolactam melt and The catalyst is mixed evenly by the dynamic mixer, and the temperature is adjusted by the heat exchanger, and then enters the hydrolysis reactor for ring-opening reaction; the obtained functional caprolactam oligomer melt is removed by the oligomer melt dehydrator and then enters the pre-polymerization reactor for Polyaddition reaction; the obtained functional polyamide prepolymer melt is dehydrated by the prepolymer melt dehydrator and then enters the post-polymerization reactor for polycondensation reaction; the obtained functional polyamide melt is successively pelletized, extracted and dried, A functional polyamide chip is obtained. The functional powder in the functional polyamide continuously produced by the method is highly uniformly dispersed, and is suitable for producing products such as high-quality fibers and films.