83results about How to "Comply with clean production requirements" patented technology

The invention discloses a process for preparing high-purity vanadium pentoxide by adopting ammonium metavanadate as a raw material. The process comprises the following step of obtaining a high-purity vanadium pentoxide product after an ammonium metavanadate crude product is treated by adopting the processes of dissolving, adjusting pH, removing impurities by an impurity removing agent, precipitating vanadium for removing impurities, and calcining and the like. By detection, the content of the high-purity vanadium pentoxide prepared by adopting the process can be up to more than 99.5%, and the content of the impurity is less than 100ppm. The process disclosed by the invention has the advantages that the control is simple, the quality of a product is stable, no pollution is caused to the environment, and the requirement for clean production is met and the like. The process is suitable for large-scale production.

The invention discloses a method for preparing a new lead-acid battery from active substances of a waste and old lead-acid battery. The method comprises the following steps of dismounting the waste and old lead-acid battery to obtain a positive electrode plate and a negative electrode plate; respectively processing the positive electrode plate and the negative electrode plate to obtain positive electrode powder and negative electrode powder; respectively performing desulfurization and calcination on the obtained positive electrode powder and the negative electrode powder to obtain new positive electrode powder and new negative electrode powder with high electrochemical performance; using the obtained new positive electrode powder and the new negative electrode powder for manufacturing the new lead-acid battery. The prepared new positive electrode powder and the prepared new negative powder can be directly used for manufacturing the new lead acid battery; the method is simple; the implementation is easy. The method has the advantages that the reduction process in the traditional waste and old lead-acid battery positive powder processing process is avoided; the electrochemical performance of the positive electrode powder can be obviously improved; the formation process of the lead acid battery is accelerated; the preparation process conforms to clean production requirements; the battery production period is shortened; the production cost is reduced.

The invention relates to a full-automatic intelligent environment-friendly production system for surface treatment. The full-automatic intelligent environment-friendly production system comprises a transfer warehouse, a circulating magnetic force travelling vehicle, a material box, a manipulator, a roller, a drying cylinder, a moving vehicle, a surface treatment electroplating production line, a drying clean production line, a pure water treatment system and a central control system. The circulating magnetic force travelling vehicle circularly moves among the transfer warehouse, surface treatment electroplating production line and the drying clean production line, pre-electroplated products are taken out from the transfer warehouse to be placed into the material box, the circulating magnetic force travelling vehicle drives the material box to move to a feeding position, and the central control system controls all devices to synergistically work. The circulating magnetic force travelling vehicle carries the primary products and electroplated products, and the manipulator clamps the products for feeding and discharging on the surface treatment electroplating production line and the drying clean production line to complete corresponding machining. The clean production requirement is met, the automation degree is high, machining is accurate, the product quality is improved, on-siteoperation does not need a great number of people, the labor intensity is small, the production speed is high, and the cost is reduced.

The invention discloses a compound enzymatic clarifying agent for the sugar industry and a preparation method and application for the compound enzymatic clarifying agent. The compound enzymatic clarifying agent comprises, by weight, from 35% to 60% of alpha-glucanase, from 20% to 30% of pectinase, from 10% to 35% of amylases, from 5% to 10% of cellulase and from 0% to 15% of water. The preparation method includes proportionally mixing the alpha-glucanase, the pectinase, the amylases and the cellulase which are raw materials to obtain a mixture; and filtering the mixture via a fine filter membrane to obtain the compound enzymatic clarifying agent. The compound enzymatic clarifying agent is added during a working section for extracting juice from sugar crops, the feeding quantity of compound enzymatic clarifying agents added into 1kg of the sugar juice ranges from 10mg to 30mg, the sugar juice clarifying efficiency can be effectively improved, the viscosity of sugar liquor is reduced, the filtering speed and the settling speed are increased, the quality of sugar products is improved, the sugar yield is increased, an original sugar production process is unchanged, and operation is simple and feasible.

The invention discloses a preparation method of oat products with rich beta-hyskon, comprising the steps: using oat bran as a raw material; adding water and evenly mixing; heating the oat bran to dissolve the wall of the oat bran by alkali under an alkaline condition; squeezing, dehydrating and drying formed oatmeal; and reprocessing the dried oat bran after being milled and sieved step by step to obtain oat products with rich beta-hyskon. The preparation method has simple technology, easy operation and low cost, and the prepared products have high viscosity, high beta-hyskon content in the oat bran, thereby being suitable for being used in bakery food.

The invention discloses a zinc-based heavy-duty corrosion prevention protecting process of a steel structural component, which belongs to the metal coating protecting technology field. The invention has the following process flows: the rim angle position burnishing of the steel structural component, the first impact cleaning, the second impact cleaning, the rim angle hot spraying, the bottom powder spray, the agglomerating semi-solidification, the surface powder spraying, the solidification, and the cooling and packaging. The invention has the advantages that through the zinc-based heavy-duty corrosion prevention compound coating technology processing to the steel structural component, the protecting effect is prominent, and the application value is good.

The invention discloses a magnesium and magnesium alloy surface silver-plating method, and relates to the technical field of magnesium alloy silver plating. According to the method, eight steps including shot blasting, oil removal, excitation, residual film removal, zinc immersion, copper plating, silver plating in advance and silver plating are adopted, good silver plating layers are obtained after magnesium and magnesium alloy surfaces are specially treated, according to magnesium and magnesium alloy silver pieces processed through operation of the process, the silver plating layer bonding force is checked by thermal shock tests, the plating layers are free of peeling, blistering and falling, parts obtained after thermal shocks are subject to bonding force tests according to a QJ479-90 marking method, and the plating layers are free of peeling, blistering and falling. Through trials and errors, all silver plating layers are good in bonding force and free of peeling, blistering and falling; through an QJ458-88 anti-sulphur test, the silver plating layers are not subject to aftertreatment, the anti-sulphur performance is larger than 1 min, and the anti-sulphur performance of partssubject to aftertreatment after silver plating is larger than 5 min. The electroplating magnesium and magnesium alloy silver-plating parts are good in bonding force, high in anti-sulphur performance and resistant to corrosion, the plating layers are free of peeling, blistering and falling, and the method is worthy of application and popularization on industry.

The invention discloses an acetylene drying process and equipment thereof. The process comprises the following steps of: conveying acetylene into an acetylene solid caustic soda drying tower, controlling the flowing speed at 2m/s, feeding acetylene gas into a first-stage acetylene drying tower when the water content of acetylene of which the pressure is 0.1MPa is lowered to 2,000ppm, and feeding into a second-stage acetylene drying tower when the water content is lowered to 700ppm; conveying acetylene gas which is exhausted out of the second-stage acetylene drying tower and of which the watercontent is lower than 10ppm into a subsequent utilization system; and returning acetylene gas of which the water content is higher than 10ppm into an acetylene gas cabinet for drying once again. The equipment comprises an acetylene solid caustic soda drying tower, a first-stage acetylene drying tower and a second-stage acetylene drying tower which are communicated in sequence. The acetylene drying process has the advantages that good dewatering effect, easiness for equipment operation, running safety, avoidance of pollution, capability of fully drying the acetylene gas, saving in cost, increase in economic efficiency and capability of lowering the water content of acetylene from 3,000-5,000ppm to 10ppm.

The invention discloses a device for separation and purification of carbon dioxide. The device comprises a water electrolysis system with forced flow, a carbon dioxide absorption device and a gas-liquid separated collection system, wherein the water electrolysis system comprises a cathode chamber, an anode chamber and a pump for pushing electrolyte to flow, and the gas-liquid separated collection system comprises an oxygen separated collector connected with the anode chamber, a hydrogen separated collector connected with the cathode chamber, and a carbon dioxide separated collector. When the device is in use, alkaline electrolyte produced from the cathode chamber is pushed by the pump into the carbon dioxide absorption device to absorb carbon dioxide coming from air or other mixed gas, and then has neutral reaction with acidic electrolyte produced from the anode chamber in the carbon dioxide separated collector so as to release carbon dioxide. The device is used for separating carbon dioxide from air, and only water and electric energy are consumed in the process; hydrogen and oxygen produced are separated naturally to produce hydrogen energy; and the device can be used for obtaining carbon dioxide in any position on the earth surface.

The invention relates to the technical field of electroplating equipment and in particular relates to a recycling device and a rcycling method of electroplating drop liquid generated in the electroplating workpiece and rack conveying and transferring process. The device comprises at least one electroplating bath, a control mechanism, a conveying mechanism used for lifting an electroplating workpiece, a dropping water collection mechanism, an automatic water supply cleaning mechanism and a sectioned water receiving ditch, wherein the dropping water collection mechanism is positioned above the electroplating bath; the conveying mechanism is positioned above the dropping water collection mechanism; the dropping water collection mechanism comprises a water dropping disc and a transmission mechanism used for driving the water dropping disc to horizontally move; the automatic water supply cleaning mechanism is connected with the water inlet of the water dropping disc; the sectioned water receiving ditch is connected with the water outlet of the water dropping disc; and the conveying mechanism, the transmission mechanism and the automatic water supply cleaning mechanism are respectively and electrically connected with the control mechanism. According to the device and method disclosed by the invention, the electroplating drop liquid generated in the electroplating workpiece and rack conveying and transferring process can be effectively recycled, the outlet loss of electroplating materials is effectively reduced, and the load of wastewater treatment is reduced.

The invention discloses a method of simultaneously producing crystallized sorbitol and daily chemical sorbitol. According to the method disclosed by the invention, the crystallized sorbitol and the daily chemical sorbitol are simultaneously obtained by taking starch as a raw material and through size mixing of the starch, liquefying, saccharifying, impurity removal, deacidification and desalination, evaporation and concentration, hydrogenation, sedimentation and decoloration, desalination, as well as washing, filtering and purifying. The method disclosed by the invention has the advantages of high efficiency, high raw material utilization rate, high additional value of products, short process flow, low production cost, low energy consumption, energy saving and water saving, and a prepared crystallized sorbitol product is high in purity and capable of meeting the requirements of applying to the field of industries, such as medicines, food and Vc; in the meantime, the obtained daily chemical sorbitol as a side product has good physical and chemical properties and can meet the requirements of preparing the daily chemical products, such as toothpaste, cosmetics and cigarettes.

The invention discloses a warp beam printing sizing-free weaving method. The method adopts a printing and weaving technique of weaving printed warp without sizing, directly fully prints the sheet-likewarp yarns which are unwound from a plurality of warp beams on the sizing machine pedestal, is free of sizing after fixation and produces a fabric beam. Finally, the fabric beam on the weaving machine and weft yarn are woven to form a fabric. In the warp beam printing color paste, a binder and a thickener provide a certain viscosity to the color paste. After the warp beam paint printing, the warpyarn has the effect of conventional sizing and can be directly woven so that the sizing process is avoided, the desizing process and the washing process after desizing are avoided, the processes arereduced, the water consumption is reduced and the difficulty of wastewater treatment is reduced. The method is a clean production process. The method can reduce the processes, reduce energy consumption and reduce costs.

The invention discloses a pure cotton warp yarn foam printing and weaving method. The printing and weaving method contains no sizing process, and concretely comprises the following steps: pure cottonraw yarn preparation, beam warping, beaming, foam coating printing, weaving, and grey cloth shaping for obtaining a finished product, wherein the foam coating printing process comprises: foam generation using a foam generator, foam coating color paste preparation, foam coating spraying and color fixing. A printing and weaving technology for sizing-free weaving after foam printing of warp yarns isused to directly perform large-area blotch printing on sheet-like warp yarns unwound from a plurality of warp shafts on the shaft bracket of a warp sizing machine, and a weave beam is produced after color fixing without sizing. The weave beam and weft yarns are woven on a loom to form a fabric, so the water washing process after desizing is omitted, the water consumption is saved, and the wastewater treatment difficulty is reduced, so the method is clean production technology. The method has the advantages of flow shortening, energy consumption reduction and cost reduction.

The invention relates to a preparation method for ethyl formate. The method does not generate a great quantity of water and does not need to take sulfuric acid as a catalyst. The ethyl formate can be prepared by reacting anhydrous ethanol with carbonic oxide under the action of a basic catalyst. By the technical scheme, equipment requirements can be lowered, cost of raw materials is reduced, hydrolysis of the ethyl formate is avoided, and yield and acceptance rate of the ethyl formate are increased.

The invention provides a method for producing dried mulberries by virtue of a closed-loop dehumidification-heat pump technique. The dried mulberries are produced by the step of raw material selection, hot ironing, color protection, drying and packaging processing by virtue of the closed-loop dehumidification-heat pump technique. By virtue of the closed-loop dehumidification-heat pump technique, the original tissue form, odor, good sensory evaluation and nutrients are furthest maintained, the product is low in moisture content and has complete internal cell structures, and the original form, color, odor, flavor and active components of fresh mulberries can be basically preserved; and furthermore, the process is simple, the production efficiency is high, the energy consumption is low, and the method is accordant with clean production requirements on energy conservation, emission reduction and effect enhancement.

The invention discloses a method for primarily separating the components of oat bran, which comprises the following steps of: adding the oat bran serving as a raw material into salt solution for stirring to inhibit viscous polysaccharide from precipitating and ensure that the fiber polysaccharide, starch, protein of the oat bran are more fully separated in the salt solution, and filtering with a screen to obtain an oversize product and an undersize product respectively, wherein the oversize product is mainly the fiber polysaccharide, and the undersize product is mainly the starch and the protein. The method solves the technical problem that: a single function ingredient is obtained by breaking other components, so that various functional factors in the oat bran cannot be developed simultaneously in the conventional process.

The invention belongs to the field of vegetable oil refining and oil processing as well as industrial application equipment thereof, and in particular relates to a vegetable oil physical refining device and a vegetable oil physical refining method. All system devices in the vegetable oil physical refining device cooperate with one another, thus forming an organically coordinated whole. An enzyme preparation applied in the device and the method is free from pollution and meets the requirements of clean production; the best activity of the enzyme preparation can be kept and excited from storageto production, so that the enzyme preparation can be utilized efficiently; the using process is finer and more efficient, and the production process is flexibly and steadily controlled. By using the system to keep the activity of the enzyme preparation, the efficient and fine utilization of enzyme and the stable control of the production process are realized, so that the stability and consistencyof quality of products can be effectively guaranteed in a mass production process.