40results about How to "No handling issues" patented technology

The invention relates to the technical field of cremation machines, in particular to a cremation machine all-dry-method posttreatment system which is characterized by comprising a smoke gas and water isolation type shock cooling device, a powder spraying device, a dust remover and adsorption equipment. A processing technology includes the following steps: enabling high-temperature smoke gas which is generated by a cremation machine to enter the smoke gas and water isolation type shock cooling device for cooling, enabling the smoke gas in a pipeline to be mixed and contact with powdery absorbents which are sprayed by the powder spraying device through a powder spraying process, enabling the absorbents to react with sulfur oxides and acidic materials in the smoke gas to produce powdery calcium compounds, and enabling the smoke gas to be conducted at least two levels of dust removing through the dust remover, trapping dust and sparkles in the smoke gas through the dust remover, wherein off gas after dust removing enters the adsorption equipment, residual infinitesimal noxious substances are absorbed by the adsorption equipment, and the off gas is discharged from a chimney. According to the cremation machine all-dry-method posttreatment system, cooling water is recycled, and therefore generation of water of secondary pollution is completely eliminated. In addition, the cremation machine all-dry-method posttreatment system has the advantages that blocking is not easy, the equipment cannot easily be corroded, energy is saved, consumption is low, damage to the equipment is small, service life of the equipment is prolonged, environment is protected, and the like.

The invention belongs to the field of medical radioactive therapy nuclide, particularly relates to a method and a device for producing medical isotope 225Ac, and solves the problems that an existing method for producing 225Ac is low in yield, high in cost and complicated in process and the like. High-power high-energy electron beams are converted into braking radiation to bombard a 226Ra sample target, 225Ac is generated through a photonuclear reaction, and finally, the 226Ra sample target is chemically dissolved to separate out 225Ac so that the method does not need expensive 229Th and is lowin cost, simple and convenient and does not have the problem of radioactive waste treatment.

The invention relates to a preparation method of a liquid Beta-diastase, which is characterized by taking wheat bran as raw material. The preparation method comprises the following technological steps: the extraction of the wheat bran, solid-liquid separation, the fine filtration of an extract, ultra-filtration concentration, prescription, secondary fine filtration and the adjustment of enzyme activity. The preparation method adopts a preservative with proper matching and proper temperature and Ph so as to effectively inhibit bacterial growth and avoid putrefaction and enzyme deactivation; the obtained products have low content of impurity, contains low concentrate of industrial salt compared with that of a solid enzyme preparation and meets the requirements of General Standard for Food Additives easily. The preparation method of the invention is a brand new preparation technology of the liquid Beta-diastase and has the advantages of simple technology, high production efficiency, low production cost and being suitable for industrialized production.

The invention relates to a fresh preservation method for fresh and alive marine products. The method comprises the following steps of: placing the fresh marine and alive products into a sealed container; extracting gas from the sealed container by using a vacuum pump; introducing carbon dioxide gas from the outside to the sealed container; and placing and storing the sealed container at a low-temperature constant-temperature place. Compared with the prior art, the method has the advantages of saving electric energy, reducing production cost and meeting environmentally-friendly requirement, along with higher fresh preservation quality, longer fresh preservation period and no 'three wastes' treatment the like.

The invention relates to dimer fatty acid and a synthetic method thereof. The method comprise the following steps: stirring while purging with nitrogen in the presence of a polymerization inhibitor and a linoleic acid dispersing agent, heating to 240-280 DEG C, beginning to feed-batch eleostearic acid, and maintaining a reaction for a period of time after feeding-batch to obtain a dimer fatty acidproduct. The dimer fatty acid is prepared by adopting the method disclosed by the invention, the molecular formula of the dimer fatty acid is C34H58(COOH)2, and the content of the dimer fatty acid inthe product is more than or equal to 70%. According to the method, the eleostearic acid is used as the raw material to synthesize the dimer fatty acid, a catalyst is not needed, the reaction conditions are relatively mild, the process is simple, and the dimer fatty acid yield is high.

A method and apparatus for low-temp concentrating of liquid extract of Chinese-medicinal material is disclosed. The said method includes cooling to over-cold temp, physically generating ice crystal, and centrifugal separation of solvent from solute.

The invention provides a single horizontal well solvent-assisted production method. The method includes: step 1: deploying a single horizontal well pattern, and the distance between the horizontal section of the horizontal well and the bottom of the reservoir is less than 1m; step 2: injecting C1-C4 organic compounds through a long pipe at a pressure greater than the dew point of the compound gas solvent Composite gas solvent with CO2; Step 3: Shut down the well for 1-2 days, heat the horizontal section of the horizontal well, and stop heating when it reaches 50-70°C; Step 4: Use long pipes with thin oil, short Pipe oil production is used for production, and the production process lasts for two days. When the downhole pressure is lower than 1MPa, the compound gas solvent is injected through the long pipe, and step 3 is repeated. The injection volume of the compound gas solvent is 1-3 times the volume of the solvent chamber; Step 5: Repeat Step 2-Step 4. When the recovery rate reaches more than 50% and the mining efficiency is lower than the economic limit, stop mining. The mining method of the invention has low cost per well, low requirements on drilling technology, no water process and low energy consumption.

The invention provides a thermal modifying method suitable for logs or thick lumbers. The method comprises the following wood treatment steps: woods with a water content of 7-8% are put in a treatment kiln; nitrogen is filled in the treatment kiln; the temperature in the kiln rises to 100 DEG C within 1 hour, rises to 140-150 DEG C at a speed of 10-15 DEG C / h, and rises to 160-180 DEG C at a speed of 20-25 DEG C / h; a heat source is closed; the nitrogen in the kiln is discharged out of the kiln; meanwhile, normal-temperature nitrogen is filled in the kiln, so that the temperature in the kiln is reduced at a speed of 30-40 DEG C / h; after the temperature in the kiln is reduced to 100 DEG C, air is introduced in the kiln; and meanwhile, atomized water is sprayed into the kiln. The heat treatment is performed under normal-pressure drying condition, so that the operation is safe, the treatment environment is not corroded, the treatment period is obviously shortened, and the production efficiency is high; and the treated woods have double-layer structures, so that the surface layer stability and durability are improved, the internal wood chemical structures are not changed, and the total wood mechanical strength is kept basically invariable.

The invention relates to a dimer acid and a preparation method thereof. In the presence of a polymerization inhibitor and a dispersant, nitrogen purging is carried out while stirring, the temperature is raised to 180-230° C., tungoleic acid is added for reaction, and a dimer acid product is obtained after the reaction is completed. . The dimer acid of the present invention is prepared by adopting the above-mentioned method of the present invention, and the molecular formula of the dimer acid is C 34 h 58 (COOH) 2 , The content of dimer acid in the product is ≥60%. The invention uses tungoleic acid as a raw material to synthesize dimer acid without using a catalyst, relatively mild reaction conditions, simple process and high yield of dimer acid.

The invention discloses a combined method for producing lubricating oil base oil and environment-friendly aromatic hydrocarbon oil. The API Class I lubricating oil base oil with very low content of condensed ring aromatics produced by the "old three sets" process is subjected to solvent extraction, and the extraction depth is controlled to further reduce the aromatics in the raffinate oil; Hydrogen modification, improve color and stability, increase viscosity index, reach API Ⅲ lubricating base oil index; at the same time, aromatics are enriched in the extracted oil, so that the content of condensed ring aromatics in the extracted oil is <3.0%, and the content of aromatics is >20% , to obtain excellent rubber filler oil for tire industry. The method of the invention can simultaneously obtain two kinds of high value-added products by modifying the class I base oil, and has the advantages of high yield of the target product, low operation cost and no waste disposal in the processing process.

The invention discloses a method for preparing an epoxy plasticizer. The method comprises the following steps: mixing high-concentration hydrogen peroxide and high-concentration formic acid at normal temperature, thereby obtaining a high-concentration peroxide formic acid mixture; adding the mixture and soybean oil into reaction equipment once, carrying out self-initiation reaction to release heat to the temperature of 60-70 DEG C, controlling the reaction temperature to 70-90 DEG C, reacting for 3-4 hours until the epoxide number is more than 7.0 percent, stopping the reaction, centrifugally separating the aqueous phase, performing dewatering and filtration on the crude oil phase, thereby obtaining the product. The method disclosed by the invention is short in reaction time, high in product selectivity, high in conversion rate and few in ring-opening reaction byproducts, the epoxide number of the product is more than 7.0 percent, the iodine value is less than 2gI / 100g, and the epoxide number retention rate is more than 99 percent; and moreover, the operations of alkali wash / washing / standing are not needed in the product preparation process, wastewater containing formic acid is distilled and recycled by a distillation tower, wastewater treatment is not needed, the wastewater is avoided, the waste solid treatment problem is solved, and the method is low in energy consumption, small in wastewater amount, short in manufacture procedure and high in product quality.

The invention belongs to the field of medical radiotherapy nuclides, in particular to a production of medical isotopes 225 Ac method and apparatus. solve current production 225 The method of Ac has problems such as low yield, high cost, and complicated process. It uses high-power high-energy electron beams to convert into bremsstrahlung bombardment. 226 Ra sample target, generated by photonuclear reaction 225 Ac, finally 226 The Ra sample target is chemically dissolved and isolated 225 Ac, the method not only does not require expensive 229 Th, and low cost, simple and convenient, no radioactive waste disposal problem.

The invention discloses a combined method for producing lubricating oil base oil and environment-friendly aromatic hydrocarbon oil. The API Class I lubricating oil base oil with very low content of condensed ring aromatics produced by the "old three sets" process is subjected to solvent extraction, and the extraction depth is controlled to further reduce the aromatics in the raffinate oil; Hydrogen modification, improve color and stability, increase viscosity index, reach API Ⅲ lubricating base oil index; at the same time, aromatics are enriched in the extracted oil, so that the content of condensed ring aromatics in the extracted oil is <3.0%, and the content of aromatics is >20% , to obtain excellent rubber filler oil for tire industry. The method of the invention can simultaneously obtain two kinds of high value-added products by modifying the class I base oil, and has the advantages of high yield of the target product, low operation cost and no waste disposal in the processing process.

The invention provides a method for extracting purified cordycepin from cordyceps militaris nutrient solution. The method comprises the steps of: taking a cordyceps militaris nutrient solution as a raw material, filtering or centrifuging, and concentrating a supernatant by rotary evaporation; filling a macroporous resin column with a concentrated liquid, then eluting with water and ethanol, collecting an ethanol eluant and concentrating; and crystallizing at low temperature. According to the method, the liquid medium is used, extracting by macroporous resin and eluting by using water and an alcohol solvent are conducted; and the process has no serious contamination or waste liquid disposal. Compared to the complex extraction process of the prior art, the three-step extraction method of the invention has the advantages of low production cost, simple process and easiness to mass production. The generated cordycepin is in white needle or crystalline shape, and has high purity reaching more than 95%, which is improved significantly compared to the 90% in the prior art.

The invention discloses a preparation method of bisphenol F with high ortho-isomeride content. The preparation method comprises the following step: through an acidic mesoporous molecular sieve Zr-SBA-15 catalyst, catalyzing phenol and formaldehyde aqueous liquor with the mass percentage of 35-40%, to synthesize the bisphenol F, wherein the adopted acidic mesoporous molecular sieve Zr-SBA-15 catalyst is synthesized in one step, and the activity of the catalyst can be regulated by regulating the mole ratio of Zr / Si atoms of the catalyst. The preparation method is simple in technology, high in catalysis efficiency, the bisphenol F with high ortho-isomeride content can be obtained, the catalyst is easily separated and recovered and repeatedly used, and no equipment corrosion and waste water treatment problems exist, so that the preparation method is an environment-friendly high-efficiency preparation method of the bisphenol F with high ortho content.