31results about How to "Suitable for large-scale operation" patented technology

The invention discloses a method for recovering cutting fluid by ceramic membrane filtration. The method comprises the following steps: (1) preliminary oil removal treatment is performed; (2) secondary oil removal treatment is performed; (3) the cutting fluid flows through an inorganic ceramic membrane group and is filtered and purified; (4) the cutting fluid filtered by the inorganic ceramic membrane group enters a recovery liquid tank, flows through an ultraviolet lamp tube for sterilization and then is supplied to a grinding machine workshop. The cutting fluid is filtered and recovered withan inorganic ceramic membrane technology and can be purified and recovered, pollutant oil, bacteria and impurities in the cutting fluid are removed, and main raw materials such as a surfactant, a preservative, a bactericide and the like of the cutting fluid are retained, so that the cutting fluid is effectively recycled, and the recovery efficiency is high; The method is simple and easy to operate and is suitable for large-scale operation; the recovered cutting fluid is sterilized by the ultraviolet lamp tube, bacterial contamination in the cutting fluid can be removed, and the cutting fluidis purified.

The invention discloses a method for extracting a blue pigment from purple cabbage. The method comprises steps as follows: digestion, microwave extraction and purification; purple cabbage pulp is digested through a digestion liquid and then centrifuged, microwave irradiation extraction is performed after a protectant is added to the liquid supernatant, and an ethanol solution of pigment colloid is purified through a silica gel chromatographic column. The method has the benefits as follows: the extraction method is simple and easy to control, consumes short time and is time-saving and labor-saving and suitable for large-scale operation, the process parameters such as temperature, pH values, solid-to-liquid ratio, extraction time, microwave power and the like in an extraction process are effectively controlled, the extraction process is optimized, and the influence of extraction conditions on the blue pigment is reduced to the minimum; a few metal ions in the system can change the color of the pigment and even can change the structure of the pigment, the protectant is added and can form a complex together with the metal ions in the system, and accordingly, the influence of the metal ions on the pigment is avoided. The method for extracting the blue pigment from purple cabbage is safe and efficient.

The invention discloses a water-saving type compressed natural gas production system, which comprises a carbonaceous substance gasification unit 1, wherein the outlet of the carbonaceous substance gasification unit 1 is communicated to a purifying unit 2, the outlet pipeline of the purifying unit 2 is divided into two branch pipes, the first branch pipe is communicated to a combustion chamber of a coke oven unit 3, the second branch pipe and the coke oven gas outlet pipe of the coke oven unit 3 are combined and then communicated to a compression unit 4, and a fine desulfurization unit 5, a methanation unit 6 and a demercuration-drying unit 7 are arranged at downstream of the compression unit 4 in order. The invention also discloses a water-saving type compressed natural gas production method by using the above system. The system and method of the present invention can effectively use the carbonaceous substance generated in a coking process, superfluous hydrogen in coke oven gas can be fully used, coke oven gas consumption for producing per unit of liquefied natural gas can be greatly reduced through gas distribution, yield of liquefied natural gas can be increased by more than 30% under same consumption of coke oven gas, and the usage amount of water can be greatly reduced by the system.

The invention discloses a straw puffed biological matrix material with a sandwich type framework, and a preparation method and an application thereof. The straw puffed biological matrix material comprises matrix cushion layers and a matrix filler, wherein the matrix cushion layers comprise an upper matrix cushion layer, a middle matrix cushion layer and a lower matrix cushion layer; the matrix filler is filled between adjacent matrix cushion layers to form a pre-finished product with a sandwich structure; the matrix cushion layers and the matrix filler are prepared by compounding of rice strawand an adhesive; and the outer layer of the pre-finished product with the sandwich structure is subjected to enveloping treatment by using the matrix cushion layers to be integrally formed. Accordingto the invention, the sandwich type framework prepared from the straw puffed matrix material increases the porosity and specific surface area of a puffed biological matrix, has good adsorbability topollutants like COD, nitrogen and phosphorus in sewage, increases the stability and mechanical strength of a puffed biological matrix, solves problems like expansion and dispersed suspension of the puffed biological matrix in water, and is easy to be recovered. The straw puffed biological matrix material provided by the invention has the following advantages: the preparation method is simple; energy consumption is low; raw materials are simple and easily-available; a material obtained after sewage treatment can be utilized for the second time; and good application prospects are achieved.

The invention relates to the field of pigment extraction technology, in particular to a method for extracting melanin from cuttlefish juice by using enzymes. Specifically, the cuttlefish juice is filtered to remove impurities, dried or freeze-dried to obtain powder, and the melanin is extracted with enzymes. The ink melanin obtained by the method of the invention has high extraction rate and good purity. The method is simple to operate, environmentally friendly and efficient, and is suitable for large-scale operation of extracting high-purity melanin from cuttlefish juice.

The invention belongs to the technical field of matrix preparing, and particularly relates to a matrix for culturing seedlings and a preparing method thereof. The matrix for culturing seedlings is prepared from biomass sludge, straw light ash, organic wastewater and a microorganism fermenting agent. The matrix for culturing seedlings is economical, efficient and good in safety, healthy seedling cultivating is facilitated, the matrix is not influenced by the weather, and application prospects are good.

The invention discloses a method for doubling corn haploid by a herbicide and the special herbicide of the method. According to the method for doubling the corn haploid, the corn haploid is processed by the special herbicide to obtain corn diploid; and an active ingredient of the special herbicide is any one of the following chemical compounds: amiprophos-methl, propyzamide and trifluralin. The special herbicide consists of the active ingredient of the special herbicide, accessory ingredients and water; and the accessory ingredients consist of dimethyl sulfoxide and TWEEN-80 or dimethyl sulfoxide, TWEEN-80 and thienone. The special herbicide provided by the invention causes small environment pollution and is low in toxicity and residue and prone to degradation, and the dead rate of seedlings is 0 after the corn haploid is processed by a center dropping method with the special herbicide. The method is simple, convenient and efficient, and the doubling rate can reach 27.9%; and the doubling rate of the corn haploid processed by a bud immersion method with the special herbicide can reach 17.9%, and the dead rate of seedlings is obviously lower than that of the seedlings processed by colchicine. The method and the herbicide are suitable for large-scale operation, and can be applicable to large-scale breeding of the corn haploid.

The invention discloses a preparation method and application of alga xanthophyll. Kelp residue wall breaking is performed by biological enzymolysis to obtain wall-broken kelp residue dry powder, a used compound enzyme preparation is a mixture of pectinase and cellulose with the ratio of W / W= 1:1, the wall-broken kelp residue dry powder is extracted by an alkaline organic solvent, a supernatant and a kelp precipitate are respectively collected; the supernatant pH value is adjusted to neutral, the supernatant is centrifuged, a supernatant is removed, and an alga xanthophylls crude extract product is obtained by 12h of vacuum freeze drying of the precipitate; then an organic solvent and silica gel chromatography column are used for purification, and the alga xanthophylls can be obtained by vacuum concentration and vacuum drying. The alga xanthophylls prepared by the preparation method has a yield reaching up to 2.5 wt%, and the preparation method has the advantages of simple operation, environmental protection and high efficiency, and is suitable for large scale production.

The invention provides a pre-cooling method for waxberry fruits cold chain storage and transportation. The method comprises the following steps: (1) the fruits of the same size and maturity and with no mechanical damage are chosen. (2) the fruits are pre-cooled under a low temperature of 3-5 DEG C. (3) then the fruits are preserved under a low temperature of 0 DEG C. By adopting suitable pre-cooling method, the invention makes the waxberry fruits be processed under the low temperature before preserved under the low temperature, which effectively reduces respiration consumption of the fruits and maintains good fruit quality and commodity nature and fruit rot rate in shelf period. The method of the invention is designed reasonably, and operated easily, has low investment cost, and is suitable to large-scaled operation.

The invention provides a process for extracting traditional Chinese medicine blood flow, comprising: first extracting with 50-85vol.% ethanol as an extraction solvent, decocting with water, and finally concentrating. Adopting the method of the invention can increase the content of Budiaoside Ⅳb in the Duanxueliu extract, and has a simple process and can be used in continuous production.

The present invention discloses an oil tea root grafting propagation method in autumn. The oil tea root grafting propagation method comprises the steps of young stock cultivation, grafting propagation and seedling management operation. The oil tea root grafting propagation method comprises the steps of using seedlings obtained from oil tea seed sand storage accelerating germination as stock seedlings, grafting collected semi-lignified or lignified oil tea cuttings to the cultivated oil tea stock seedlings, planting and cultivating the oil tea cuttings in a seedling growing container equipped with seedling growing substrate, and obtaining oil tea seedlings through seedling management after grafting. Oil tea seedling roots are used as stocks for grafting in autumn, utilization rate of the cuttings can be effectively increased, oil tea seeds are saved, survival rate is high, seedling quality is good, qualified seedling percentage is high, and grafting labor shortage is alleviated by seedling growing in batches, thereby facilitating labor dispersion. The oil tea root grafting propagation method has good economic, social and ecological benefits.

The invention discloses a preparation method of fucosan. On the basis of the traditional preparation technology of the fucosan, HCl is adopted to adjust the pH value of solution, and metal chelating agent EDTA is added, so as to lead heavy metal ions originally chelated on the fucosan sulfate groups to shed off and form chelates with the EDTA. By adopting an ultrafiltration technology, the EDTA-heavy metal chelates are separated from the fucosan, and concentrated, and the fucosan after the removal of heavy metal elements can be prepared through freeze-drying. The preparation method has the advantages of simple operation, mild conditions, high shedding rate of heavy metal ions, low cost and the like, and is suitable for large-scale operations.

The invention brings forward a cleaning method for PVP on the surface of a nanometer PtPd alloy material. The method comprises the following steps: subjecting the nanometer PtPd alloy material to preliminary cleaning with a mixed liquid composed of acetone and ethanol; then cleaning the nanometer PtPd alloy material with a mixed liquid composed of sodium borohydride and tert-butylamine at normal temperature under stirring; and cleaning the nanometer PtPd alloy material with pure ethanol so as to obtain the nanometer PtPd alloy material with a clean surface. According to the cleaning method, since combined action of sodium borohydride and tert-butylamine is employed, PVP on the surface of the nanometer PtPd alloy material is rapidly and better removed, and the cleaned nanometer PtPd alloy material has obviously improved electrochemical activity. The cleaning method has the advantages of easiness, practicability, short cleaning time, no need for complex and expensive equipment, mild conditions, good effects and suitability for large scale operation.

The invention relates to a method for purifying papain with a metal affinity membrane, which comprises the steps that (1) a nylon membrane is activated with formaldehyde and modified with chitosan; (2) the activated and modified nylon membrane reacts with the mixture solution of epichlorohydrin, sodium hydroxide and sodium borohydride; and the membrane is submersed in the mixture solution of sodium carbonate, sodium borohydride and an coupling agent, and in copper sulphate solution, respectively to get the chelating copper ion metal affinity membrane; (3) the metal affinity membrane is foldedup to become a membrane pile, and the membrane pile is arranged in a membrane bridge before the membrane pile is fed into Tris-HCl buffer solution and eluent with a peristaltic pump; subsequently, the membrane pile is fed into papain solution, and is eluted with the eluent, thus getting the target product, namely papain; (4) the enzyme activity and the protein content are tested, and purificationfactor is calculated. The method is quick, simple and convenient, and can be used for separating papain in large quantity, and is applicable for large-scale production. In addition, the activity of the extracted enzyme is excellent.

The invention discloses a preparation method of chromatographic grade methyl tertiary butyl ether. The preparation method comprises the following steps: under nitrogen protection, sodium hypochlorite solution and technical grade methyl tertiary butyl ether are used for reflux reaction to generate high-boiling chlorohydrin, and then Diol is further generated; water and alcohol impurities are removed by drying with anhydrous calcium oxide; finally, chromatographic grade methyl tertiary butyl ether is obtained by rectification; It is suitable for large-scale operation, and the purity of the prepared product can reach more than 99.99%.