45results about How to "Contains less" patented technology

The invention discloses a recycle production line and a recycle technology of PET (Polyethylene Terephthalate) bottles. The recycle production line comprises a first feeding device, a label removing device, a second feeding device, a manual sorting platform, a crusher, a first washing cage, a cleaning and separating device, a high-strength friction cleaning device, a hot-water cleaning device, a first dehydrator, a second washing cage, a second dehydrator, a rinsing device, a third dehydrator and a packer; the cleaning and separating device, the hot-water cleaning device and the rinsing device separately comprise a water tank, stirring cleaners and a mesh screen; each mesh screen tank is formed by sequentially connecting a plurality of arc-shaped mesh screen tank units with upward openings in series along the horizontal direction; a stirring cleaner is arranged above each arc-shaped mesh screen tank unit; each stirring cleaner comprises a rotary shaft and a stirring plate arranged on the rotary shaft; and the rotary shaft of each stirring cleaner is connected with a stirring cleaning driving mechanism. By adopting the production line, the cleaning of fragments is good in effect, high in speed and high in production efficiency.

The invention relates to a method for preparing hydrocarbon substance equals to diesel oil, gasoline and aviation kerosene through inducting the calcium soap process of decarboxylation by utilizing biological grease, which belongs to the biological fuel oil field. The method comprises the following steps in sequence: the process of extracting biological grease; the process of full hydrogenation; the process of full calcium saponification; the process of extracting glycerin; the process of decarboxylation; the process of catalytic cracking. The preparation of biological oil with the biological grease of the invention has the advantages: firstly, the structure and the composition of the basic molecule of the biological oil is identical with that of the real petroleum fuel; secondly, the technical routes are completely various, the invention adopts the inductive decarboxylation of the full saturation fatty acid calcium soap; thirdly, the selection of the raw material of the grease does not collide with the national grain and oil security strategy; fourthly, the impurities contained are less; fifthly, calcium hydroxide produces calcium carbonate after being used, and the latter can be deoxidized into calcium hydroxide after being processed, and can be reused after being purified, which complies with the principles of the circular economy and the environmental economy.

The invention provides a method for recycling zinc oxide waste desulfurizers and co-producing ammonium sulfate, which comprises the following steps: roasting zinc oxide waste desulfurizers at 850-900 DEG C so as to obtain an inactive zinc oxide material; dissolving the inactive zinc oxide material in water so as to obtain fluid, adding a sulfuric acid into the fluid, and after the mixture is completely reacted, filtering the obtained product, so that filter residue and zinc sulfate filtrate are obtained; adding solid ammonium bicarbonate into the zinc sulfate filtrate, reacting at 30-40 DEG C, and in the process of reacting, controlling the pH value of the solution to be 6.8-6.9 until the reaction is completed; keeping the pH value of the solution after the reaction is completely unchanged, raising the temperature of the solution to 60-70 DEG C, and continuing to age the solution under the condition of heat preservation, so that an basic zinc carbonate filter cake and an ammonium sulfate solution are obtained; washing, drying and roasting the basic zinc carbonate filter cake so as to obtain active zinc oxide; and evaporating the ammonium sulfate solution so as to recycle ammonium sulfate. The method for recycling zinc oxide waste desulfurizers and co-producing ammonium sulfate, which is disclosed by the invention, has the advantages of low treatment cost, low environmental pollution, and high zinc recycle rate.

The invention discloses a sieving and drying device for metal powder, include a hot air fan, sieve powder box, distribution box and dispersing box, An upper end of that dispersion box is provide witha motor 2 and a feeding port, A taper stirring drum is arrange in that dispersion box, the main shaft of the motor 2 is provided with a stirring shaft, the lower end of the conical stirring drum is provided with a blanking pipe, A low end of that blanking pipe is communicate with the distribution box, A control valve is arranged on the feeding pipe, A run wheel is arranged in the material distribution box, two grooves are symmetrically arranged on the runner, the upper end side of the sieve powder box is provided with a mounting seat, A motor 1 is arranged on the mounting seat, the main shaftof the motor is provided with an eccentric wheel, A screen net frame is arranged in the screen powder box, a screen net is arranged on the inner side of the screen net frame, a bracket is arranged onthe bottom of the screen powder box, and a recovery box is arranged on the upper end of the bracket. The device realizes the quantitative screening of the powder, ensures the screening effect and efficiency of the screen net, and the treated powder contains less impurities and the water content of the powder is low.

The invention discloses a production process of dry lotus root starch and belongs to a processing technology for agricultural and sideline products. The dry lotus root starch is produced by using dry lotus roots as raw materials. The production process comprises the specific flows of raw material pretreatment, soaking, squeezing, pulp washing, pulp bleaching, dehydration and washing, and drying. The production process has the beneficial effects that the dry lotus root starch is high in purity, small in nutrient loss, pure in taste, short in production period, and suitable for large-scale production; moreover, the production process is easy to control.

The invention provides a method for detecting the pesticide residue amount of chlorpyrifos in vegetables. The method is realized by applying a nano-graphene-modified electrode. The method comprises the following steps: pretreating the electrode; constructing an electrochemical sensor interface; detecting a standard chlorpyrifos and establishing a standard curve; treating a vegetable sample; and detecting the sample by using a differential pulse voltammetry, and calculating the content of the chlorpyrifos in the vegetables according to the standard curve of the chlorpyrifos. The method provided by the invention has the advantages of fastness in response, short detection time, easiness in operation, good selectivity, strong influence capability by interfering substances, high sensitivity and readiness and low detection limit, conforms to the development of a fast detection technology for the pesticide residue in China and can meet the requirement of the internationalization for detecting the pesticide residue amount in the vegetables, and the cost of instruments is low.

The invention relates to the technical field of pesticide synthesis, and particularly discloses a preparation method of captan. The preparation method comprises the following steps: S1, dissolving 1, 2, 3, 6-tetrahydrophthalimide in an alkaline solution to form a mixed solution, and cooling the mixed solution; S2, carrying out condensation reaction on perchloromethyl mercaptan and the mixed solution cooled in the step S1 in a tower reactor, and introducing compressed air for bubbling to form flooding entrainment; and S3, separating the flooding entrainment from the mixed solution obtained in the step S2, and heating, filtering, washing and drying the mixed solution obtained after separation to obtain the captan. The process is simple, the generated impurities are low, the generated wastewater is less, the product yield is high, and the prepared captan is good in quality and high in purity.

The invention discloses a gas, liquid and solid three-phase separation system which can be used for realizing high-efficiency separation of three phases of gas, liquid and solid. The system comprises a cross flow filter, a gas and liquid coalescer, a front flow dividing container, a rear flow dividing container and a slurry concentrator, wherein a to-be-filtered material charging hole of the cross flow filter is connected with an output end of a to-be-filtered material conveying pipe; a filtered material discharging hole is connected with an input end of a filtered material conveying pipe; a filtered and concentrated material discharging hole is connected with the input end of a concentrated material refluxing pipe; a gas and liquid two-phase material charging hole of the gas and liquid coalescer is connected with the input end of a gas and liquid two-phase material conveying pipe; a gas and liquid two-phase material discharging hole of the front flow dividing container is connected with the input end of the gas and liquid two-phase material conveying pipe; a to-be-filtered material discharging hole is connected with the input end of the to-be-filtered material conveying pipe; the filtered and concentrated material charging hole is connected with the output end of the concentrated material refluxing pipe; a bottom slurry discharging hole is connected with a slurry conveying pipe; the filtered material charging hole of the rear flow dividing container is connected with the output end of the filtered material conveying pipe; the gas and liquid two-phase material discharging hole is connected with the gas and liquid two-phase material conveying pipe; and a to-be-treated slurry charging hole of the slurry concentrator is connected with the slurry conveying pipe.

The invention provides a cutting fluid circulating system used for ultrasonic inspection of a numerical-control machine tool. The cutting fluid circulating system comprises a settler, a lifting pump, a first nozzle, a second nozzle and a fluid collection pan. A filter plate is arranged in the settler, and a settler inlet and a settler outlet are arranged in two sides of the filter plate respectively. The settler outlet is communicated with the inlet of the lifting pump through a pipeline, the outlet of the lifting pump is communicated with the first nozzle and the second nozzle respectively through pipelines, a first throttle valve is arranged on a pipeline between the lifting pump and the first nozzle, and a second throttle valve, a filter and a pressure relief valve are arranged on a pipeline between the lifting pump and the second nozzle; the fluid collection pan is arranged below a worktable of the numerical-control machine tool and used for collecting cutting fluid on the worktable of the numerical-control machine tool, and the outlet of the fluid collection pan is provided with a filter screen and is communicated with the inlet of the settler through a pipeline. The cutting fluid circulating system used for ultrasonic inspection of the numerical-control machine tool meets the machining and detecting requirements and good filtering effect of the cutting fluid.

The invention discloses a method for preparing activated carbon by taking coconut shells as raw materials. The method comprises the following steps: S1, mixing of the raw materials; S2, high-temperature carbonization; S3, activation; S4, rinsing and airing: rinsing the activated materials obtained in S3, and drying the rinsed materials to obtain dried materials; S5, pulverizing; S6, mixing: mixingthe pulverized materials obtained in S5 with bentonite and water according to the following parts by weight: 100-125 parts of pulverized materials, 24-36 parts of bentonite and 18-24 parts of water,thereby obtaining mixture; S7, granulating: S8, secondary physical activation: putting the dried granules obtained in S7 into an external combustion type converter, raising the temperature until the production temperature in a hearth is 620-650 DEG C, and introducing high-temperature water vapor for secondary activation to obtain materials after secondary activation; and S9, cooling and sieving. The activated carbon prepared by the method disclosed by the invention is higher in specific surface area and better in adsorption performance.

The invention discloses a method for preparing L-glutamic acid chelated potassium monohydrate. The method comprises the following steps of performing a reaction by using potassium carbonate or potassium hydroxide, and L-glutamic acid as raw materials, and by using water of which the temperature is 70-80 DEG C as a solvent, clarifying a solution, adjusting the pH value of reaction liquid to 7.5-8.5, continuing a reaction at 80-85 DEG C for 2-4 hours, decoloring reaction liquid, performing filtration, performing concentration to a Baume degree of 36-38 degree Be, and then performing cooling to 15-20 DEG C; and adding L-glutamic acid chelated potassium monohydrate crystals as seed crystals to concentrated liquid, maintaining the temperature to be 15-20 DEG C, performing stirring for crystallization, performing discharging, performing centrifugation so as to obtain crude products, rinsing every 100 kg of the crude products with 5-10 L of deionized water, and drying solids so as to obtain products of which the chelating degree is 95% or above. According to the method disclosed by the invention, an organic solvent is not used, so that the safety coefficient of production environment is increased, and the cost of the raw materials is substantially reduced; the products are free from solvent residues, and moisture is easy to control; and besides, investment on equipment and sites can be reduced.

The invention provides fungus extraction equipment. The fungus extraction equipment comprises a mixing barrel, a filtering plate and a containing barrel matched with the mixing barrel in an insertingmode, a separation film is arranged in the mixing barrel, the separation film divides the mixing barrel into a mixing cavity and a filtering cavity, a primary filtering film is arranged at the bottomend of the mixing barrel, and a stirring rod and a driving member capable of transmitting power to the stirring rod to enable the stirring rod to rotate are arranged in the mixing barrel. The containing barrel is connected with the filtering plate, a secondary filtering film is arranged in the filtering plate, and a power device for enabling fecal liquid to circulate between the containing barreland the filtering plate is arranged between the containing barrel and the filtering plate. The fungus extraction equipment solves the problems of low extraction purity and low efficiency in the priorart for extracting beneficial bacteria.

The invention concerns a method for refrigerating liquefied natural gas under pressure (1), comprising a first step wherein the LNG (1) is cooled, expanded and separated (a) in a first base fraction (4) which is collected, and (b) a first top fraction (3) which is heated, compressed in a compressor (K1) and cooled into a first compressed fraction (5) which is collected; a second compressed fraction (6) is drawn from the fuel gas (5), cooled then mixed with the cooled and expanded LNG (1). The invention is characterised in that it comprises a second step wherein the second compressed fraction (6) is compressed and cooled, and a flux is (8) drawn and cooled, expanded and introduced in the compressor (K1). The invention also describes other embodiments.

The invention discloses a method for preparing a hierarchical pore titanium-silicon TS-1 molecular sieve. According to the method, titanic acid polyester polyol is used as a titanium source, and titanium is linked to a polymer, so that titanium is difficult to hydrolyze, precipitation of TiO2 can be prevented, and generation of non-framework titanium is reduced; and the titanic acid polyester polyol can be used as a titanium source and can also be used as a mesoporous template agent in the synthesis process, so that the obtained TS-1 molecular sieve has a mesoporous structure and has an important promotion effect on expanding the application of the TS-1 molecular sieve in the field of catalysis.

The invention relates to the field of fine chemical engineering, in particular to a method for preparing 2-ethylhexyl 4-(dimethylamino)benzoate through hydrogenation by taking water as a solvent. Themethod for preparing 2-ethylhexyl 4-(dimethylamino)benzoate through hydrogenation by taking water as a solvent is characterized by comprising the following steps: (1) adding water, 4-nitro-benzoic acid 2-ethyl-hexyl ester and an active nickel catalyst into a reactor in proportion; (2) performing heating, introducing hydrogen, and carrying out heat preservation and pressure maintaining reaction until no hydrogen is absorbed; (3) cooling, namely adding paraformaldehyde into the reactor, and supplementing the active nickel catalyst in proportion; (4) heating, introducing hydrogen, and carrying out heat preservation and pressure maintaining reaction until hydrogen is not absorbed; (5) continuing to preserve heat and pressure for several hours, terminating the reaction, and sampling and analyzing; (6) after the catalyst is filtered, recycling, activating and reusing the catalyst, standing for layering, discharging a water layer into a sewage system, and feeding an oil layer into a distillation tower; and (7) heating, rectifying and purifying by the distillation tower until the product specification is met, and barreling and packaging.

The invention provides a lubricating oil filtering device. The device comprises a shell, a discharging box, a first filter screen structure, a second filter screen structure and a driving structure are arranged in the shell. One end of the driving structure is connected with the first filter screen structure in a meshed mode, the other end of the driving structure is connected with the second filter screen structure in the meshed mode, the second filter screen structure is located under the first filter screen structure and is parallel to the first filter screen structure, the discharging boxis arranged above the first filter screen structure, and the driving structure is in signal connection with a controller. The lubricating oil filtering device disclosed by the invention is simple in structure; the lubricating oil filtering device is simple in structure and reasonable in design, the discharging box, the first filtering net structure and the second filtering net structure complete filtering treatment of impurities in lubricating oil, repeated filtering of the lubricating oil is achieved, the filtering effect and the filtering efficiency are guaranteed, the production efficiencyis improved, and the lubricating oil treated through the lubricating oil filtering device contains few impurities and is high in quality.