51results about How to "Mild handling" patented technology

The invention discloses a rare-earth oxide modified high-selectivity catalyst for adiponitrile hydrogenation and hexylenediamine production, a preparation method and application thereof. An alumina-supported nickel-based catalyst is used as an active component, and at 25-90 DEG C and through a parallel flow precipitation process, a low-content rare-earth oxide is used for the modification. A tankreactor is adopted at the low temperature and without an alkaline reagent to carry out a reaction at the pressure of 1-9 MPa for 1-6 h so as to achieve adiponitrile catalytic conversion for high-selectivity preparation of hexylenediamine. No alkaline reagent or NH3 is added during the reaction process to inhibit side reaction of cyclization. The environmental pollution is reduced; and the catalysthas high mechanical strength, the reaction post-treatment is simple and the reaction condition is relatively mild. According to the method and in part of the embodiments, the conversion rate of adiponitrile reaches up to 100% according to set reaction parameters, and selectivity of the product hexylenediamine can reach up to 90%. The invention has good economic benefit and industrial applicationprospects.

The invention provides a dyeing process of nylon fiber. The dyeing process comprises the following steps: pretreatment, presetting, dyeing soaping, color fixing, after finishing, drying, setting, calendering and winding. The dyeing process provided by the invention has the advantages that in the dyeing procedure, disperse dyes and acidic dyes are used for carrying out dyeing according to the own property of the nylon fiber, so that the dyeing effect is improved; the soaping and color-fixing processes are added, so that the dyeing firmness is good; in the color fixing process, environment-friendly formaldehyde-free TCD-R is adopted, and the fiber is dried in a step-by-step manner after color fixation, so that the firmness of the fiber is greatly improved; the after-finishing process is added, so that the color firmness and softness of the fabrics are improved and increased, the roughness of the fabrics is reduced, and further the fabrics are fluffy and elastic.

The invention provides a process for dyeing a silk fabric. The process comprises the steps of pre-treatment, pre-shaping, modifying treatment, dyeing, soaping, color fixing, post-arrangement, drying, shaping, calendering and rolling. According to the method, the fabric is modified in advance by chitosan to improve the dyeing rate, and the difficulty of the subsequent dyeing step is reduced; in the dyeing step, the chitosan is used as a mordant, and mangosteen hull serving as a natural dye is used and is free of poison and environmentally friendly; the dyeing firmness is good by additionally arranging the soaping and color fixing steps, environment-friendly formaldehyde-free TCD-R is adopted in the color fixing step, color-fixed fibers are stepwise dried, so that the fiber firmness degree is greatly improved; the post-arrangement process is additionally added, so that the color firmness and softness of the fabric is improved, the roughness of the fabric is reduced, and the fabric is fluffy and elastic.

The invention provides a staining method for aramid fiber. The staining method comprises the steps of preprocessing, preshaping, staining, reduction clearing, color fixing, soft processing, drying, shaping, calendaring and rolling. According to the staining method, DEET is added in to serve as a dye carrier, and the staining effect and efficiency are improved; meanwhile, substitute alkali is adopted to replace a conventional soda substance, and not only is the usage amount decreased, but also the color fixing effect is enhanced to enable the washability of the aramid fiber is further enhanced; the reduction clearing and color fixing processes are added, and therefore the staining fastness is good; green and environmental-friendly non-formaldehyde TCD-R is adopted in the color fixing process, the fiber is dried step by step after color fixing, and therefore the firmness of the fiber is greatly improved; the soft processing process is added, the color fastness and softness of fabric are improved, the roughness of the fabric is reduced, and therefore the fabric is fluffy and rich in elasticity.

The invention provides a dyeing process of mulberry silk fabrics. The dyeing process comprises the steps of: pretreatment, presetting, low-temperature freezing treatment, dyeing, soaping, color fixing, after finishing, drying, setting, calendering and winding. The dyeing process provided by the invention has the advantages that the step of low-temperature freezing treatment is added, so that the modifying treatment is carried out on the properties of the mulberry silk fabrics fundamentally; a salt-free dyeing additive is added in the dyeing procedure, so that the use of inorganic salts is reduced on the premise of guaranteeing the dyeing effect; the soaping and color-fixing processes are added, so that the dyeing firmness is good; in the color fixing process, environment-friendly formaldehyde-free TCD-R is adopted, and the fiber is dried in a step-by-step manner after color fixation, so that the firmness of the fiber is greatly improved; the after-finishing process is added, so that the color firmness and softness of the fabrics are improved and increased, the roughness of the fabrics is reduced, and further the fabrics are fluffy and elastic.

The invention provides a high-alkali-resistance mild-performance safe and environment-friendly textile scouring agent. The textile scouring agent is prepared from the following components in percentage by weight: 20 to 25% of alcohol alkoxylate, 15 to 25% of alkyl glycoside, 10 to 15% of ethoxy alkyl sodium sulfate, 5% of ethylene glycol monobutyl ether, 2 to 4% of organic solvents, 0.2 to 0.8% of edetic acid, 0.5 to 1.0% of defoaming agents, and 20 to 45% of water. According to the textile scouring agent, the alcohol alkoxylate with high penetration, the alkyl glycoside with a mild performance, and the ethoxy alkyl sodium sulfate which serves as an anionic surfactant are used as active matter raw materials which almost do not irritate the skin and damage cotton, hemp, silk, leather and other high-level fabrics; the formula is basically free of harmful substance residue, high in penetration, high in cleaning capacity, and outstanding in detergency capacity, and the hand feel of a processed fabric is good.

The invention relates to a method for decolorizing silkworm chrysalis protein enzymatic hydrolysis peptide. The method comprises the following steps of: adjusting pH of a 1 percent silkworm chrysalis protein enzymatic hydrolysis peptide solution to be 8, adding 30g of powdery activated carbon and activated clay composite decolorizer in a ratio of 1:7 into each liter of the solution, placing in an oscillatory type water bath kettle at the temperature of 30 DEG C, adjusting the rotation speed to be 200r/min, decolorizing for 30 minutes, and centrifuging by using a disk centrifuge at the speed of 5,000 to 6,000r/min for 30 minutes, wherein the decolorization rate is 70.39 percent, the nitrogen retention rate is 91.14 percent, and the reducing power retention rate is 86.79 percent. The process is simple and easy to operate, the treatment process is mild, and the method can be widely applied to health food industry in which silkworm chrysalis polypeptide and other bioactive peptides are produced.

The invention provides a direct dyeing process for a chemical fiber. The direct dyeing process for the chemical fiber comprises the steps of pretreatment, pre-shaping, modification treatment, dyeing, soaping, color fixing, after-treatment, drying, sizing, calendaring and rolling. According to the direct dyeing process for the chemical fiber, the modification treatment is added, so that performances of a chemical fabric are subjected to the modification treatment basically, the dyeing degree of the fabric is increased, and the difficulty of a subsequent dyeing step is reduced; during dyeing, the mass utilization of inorganic salt is avoided; furthermore, substitute alkali is used for replacing a conventional sodium carbonate substance, so that the consumption is reduced, a color fixation effect is also improved, and the washing fastness of the chemical fiber is further improved; soaping and color fixing processes are added, so that the dyeing fastness is good; environment-protection formaldehyde-free TCD-R is utilized in the color fixing process, and color-fixed fibers are gradually dried, so that the firmness of the fibers is greatly improved; the post-treatment process is added, so that the color fastness and the flexibility of the fabric are improved, the roughness of the fabric is reduced, and the fabric is fluffy and has high resilience.

The invention provides a chemical fiber dyeing technology with the ultraviolet protection function. The chemical fiber dyeing technology comprises pretreatment, pre-shaping, dyeing, washing, soaping, color fixing, softening treatment, drying, shaping and rolling. The natural dyestuff of sophora flower bud is adopted, aluminum potassium sulfate dodecahydrate is used as a mordant, the dyeing effect is better, and the washability is greatly enhanced; meanwhile, due to the performance of the sophora flower bud, dyed chemical fiber has the good ultraviolet protection performance and the antibacterial and oxidation resistance; the washing technology and the color fixing technology are added, the dyeing firmness is good, green and environment-friendly and aldehyde-free TCD-R is adopted in the color fixing technology, and the chemical fiber obtained after color fixing is dried step by step, so that the firmness of the chemical fiber is greatly improved; the softening treatment technology is added, the fabric color firmness and flexibility are improved, the fabric roughness is lightened, and the fabric is fluffy and full of elasticity.

The invention relates to a three-plasmid whole sealing environmentally friendly vibration fluidized bed dryer which is suitable for drying powder material of regular shape such as Laroflex MP with granularity ranging from 50mu m to 5000mu m. The drier comprises a foundation (9), a lower housing (13), a fluidized bed body (6), an upper housing (18) and a bag type dust collector (24); wherein the lower housing (13) is supported on the foundation (9) by a slantly arranged plate spring (12), a case type vibration exciter (14) is arranged at the front end of the lower housing (13), the fluidized bed body (6) is arranged above the lower housing (13) and internally provided with a hood-shaped fluidized bed plate (7), the upper housing (18) is arranged above the fluidized bed body (6) and internally provided with a plurality of groups of bag type dust collectors (24). An air-reserve tank (24.6) is arranged outside the upper housing (18), a plurality of air branch pipes (24.3) are internally arranged in the air-reserve tank (24.6), wherein each air branch pipe (24.3) is provided with a pulse solenoid valve (24.5), the bottom part thereof is provided with an air source hole (24.7). The drier of the invention features low energy consumption, high production efficiency, good operation stability and good uniformity of products.

The invention relates to a preparation method and an application method of an electro-Fenton composite membrane cathode, and the method comprises the following steps: uniformly dispersing nano-particles of a heterogeneous iron-containing catalyst in an electrostatic spinning solution, and collecting electrostatic fibers on a conductive carbon material carrier capable of producing hydrogen peroxide by adopting an electrostatic spinning technology, enabling the nano-particles to form an electrospinning catalytic membrane along with the electrostatic fiber generation process and loading the nano-particles on the carrier. According to the preparation method, the yield of hydrogen peroxide can be remarkably improved, especially in the electrostatic fiber generation process, a carbon felt which is modified by graphene and carbon black and has good conductivity is adopted as a fiber receiving device, hydrogen peroxide is efficiently generated in situ on the interface of the modified carbon felt, and .OH is generated in situ on the nano-particle catalysis interface. The yield of hydrogen peroxide is greatly improved, and the micro-pollutants enriched on the surface of the membrane cathode are efficiently catalyzed, so that the efficient removal of the micro-pollutants is realized.

The present invention relates to a seedling method for cyclocarya paliurus seeds. The method is characterized in comprising the following steps: a. seed selecting; b. seed treating; c. seed germination accelerating; and d. seed seedling. According to the method provided by the present invention, the seedlings emerge in 30-60 days after sowing of the cyclocarya paliurus seeds, the emergence rate is over 90%, and the seedling survival rate is over 95%.

The invention relates to a gas evacuation assembly (30) for recovering gases during coking of at least one solid feedstock from the group of lignite, poor-baking bituminous coal, biomass, petroleum coke, petroleum coal to form coke, wherein the gas evacuation assembly is designed to be coupled to at least one vertical furnace chamber (11) of a furnace device (10). The gas evacuation assembly has at least three gas extraction lines (31, 33) which can be arranged at at least three different heights of the furnace chamber and are designed to be coupled to the furnace chamber at the at least threeheights. The gas evacuation assembly is designed to selectively handle at least three gas types which are evacuated selectively by means of the respective gas extraction line. The invention also relates to a method for recovering gases and to the use of at least one gas type recovered by means of such a gas evacuation assembly.

The invention discloses a treatment method of non-ionic surfactant wastewater and belongs to the technical field of wastewater treatment. The treatment method includes that a magnetizing treatment step is adopted to preliminarily treat wastewater, the wastewater is further treated through an activated carbon adsorption step, a magnetizing treatment device is adopted to magnetize the wastewater in the magnetizing treatment step and comprises a magnetizing container and a permanent magnet, and magnetic induction intensity in the magnetizing treatment device should not be lower than 100mT; a magnetic field in the process of magnetizing the wastewater enables pollutants in the wastewater to generate advanced oxidation effect, the wastewater is further treated through activated carbon adsorption, and magnetizing treatment and activated carbon adsorption have certain synergistic effect, so that the whole treatment process does not need to consume energy and reagents. The treatment method is environment-friendly, low in time consumption, simple in equipment, low in cost, excellent in treatment effect and conducive to popularization.

The invention provides a method for jointly extracting multiple kinds of yolk protein based on water phase separation and a product. The method includes the steps that (1), fresh yolk is taken, a water phase solution with the volume 0.5-5 times that of the yolk is added for dilution, and the material is stirred, and is subjected to standing or is centrifugally layered; an upper-layer component A,a middle-layer component B and a lower-layer component C are obtained, wherein the water phase solution is polysaccharide matter with the mass percentage concentration of 0.1-0.5% or 2-8% of a water solution of low-molecular polymers; (2), the component A is taken, and yolk low-density lipoprotein is prepared; (3), the component B is taken, and yolk immune globulin is prepared; (4), the componentC is taken, and phosvitin and yolk high-density lipoprotein are prepared. The process is simple and short, the operation is easy, four kinds of yolk protein can be jointly extracted, the extracting efficiency is high, and the unit raw material output is high; extraction is carried out based on water phase separation, reagents used in the method are all food-grade or medicine-grade components, andthe reagents are green and safe; the treatment process is mild, and the functional characteristics and the bio-activity of the protein can be reserved to the maximum degree.

The invention relates to a squeezing unit (5) for a strip rolling mill and to a strip rolling mill comprising such a squeezing unit, wherein the squeezing unit (5) has an upper roller (6) and a lower roller (7), between which a squeezing nip (8) is formed. To achieve long service lives, ensure low residual moisture and minimize surface damage on the strip, at least one of the rollers (6, 7) is provided with a revolving shell (9) and a stationary yoke (10), which passes axially through the shell (9), wherein a pressing device (12) is arranged between the yoke (10) and the shell (9). The pressing device (12) subjects the shell (9) to an outward bearing pressure in a radial direction, wherein the bearing pressure is variable over a roller width such that zonal control and active width adjustment are effected.

The invention discloses fresh bean noodles rich in soluble dietary fibers and easy to cook without breakage and a preparation method of the fresh bean noodles. The noodles are prepared from the following ingredients in parts by weight: 1000-1200 parts of low-gluten flour, 500-550 parts of bean dregs, 50-60 parts of perilla fruit leaves, 300-320 parts of pineapple peel dregs, 30-35 parts of fermented glutinous rice, 6-7 parts of table salt, 10-12 parts of agar, 15-18 parts of pineapple peel pectin, 30-35 parts of coconut milk, 20-23 parts of sesame oil and 3-3.5 parts of dietary alkali. The fresh bean noodles rich in soluble dietary fibers and easy to cook without breakage are rich in nutrition, have chewy and fresh taste, are easy to cook without breakage, are fresh without greasy taste and are particularly suitable for being eaten by special crowds such as diabetes patients due to low total sugar content in pineapple peel dietary fibers.