31results about How to "Pollution-free production" patented technology

The invention provides a method for preparing a high surface-activity adsorbing carbon material through a catalysis and activation synchronous process, which can markedly reduce environmental pollution, can lower the production cost of the adsorbing carbon material, and is easy for industrialization. The method comprises the following steps of: firstly, pulverizing petroleum coke or a wooden husk, carbonizing, then mixing with an alkali medium activator, preactivating, then activating at different temperature segments of a high-temperature activation furnace, and controlling the specific surface area and the pore diameter distribution of the high surface-activity adsorbing carbon material by adopting a double-furnace three-segment catalysis and activation synchronous method. The method comprises the following steps of: carbonizing raw materials in the activation furnace for 2 hours at the temperature of 300-800 DEG C, then adding carbon powder and 1-5% of catalyst according to the proportion of the carbon powder and KOH of 1:1-1:2, directly mixing with the raw materials, and heating to 150-550 DEG C for carrying out preactivation reaction for 1-2 hours; then enabling the material to enter the high-temperature activation furnace, reacting for 1-2 hours at a medium temperature segment at the temperature of 650-850 DEG C, and then reacting for 1-2 hours at a high temperature segment at the temperature of 950-1050 DEG C.

The invention provides a method for simply, conveniently and quickly preparing notoginsenoside R1 and ginsenoside Rg1, Re, Rb1 and / or Rd, which can meet the requirement of industrial production and isenvironment-friendly. In the method, notoginseng extract and arasaponin or notoginsenoside intermediates are used as original materials, a preparative scale reversed phase high-performance liquid chromatography is adopted, and an ethanol-water system is used as a flow phase to carry out isocratic elution or gradient elution, wherein the ethanol-water system is an ethanol-water solution of 30 percent to 80 percent (V / V). The method has the advantages of simple process, no pollution, low cost and high purity, wherein the purity of products produced by the method is more than 97 percent.

The invention relates to dry or semi-dry hawthorn wine. The hawthorn wine is characterized in that: the alcoholic strength is 9 to 13 percent V / V; based on glucose, the total sugar is 3 to 15g / L; based on citric acid, the total acid is 6 to 9g / L; and based on standard rutin, the total flavonoid content is 45 to 70mg / L. A brewing method comprises the following steps of: extracting hawthorn juice rich in flavone biological effective ingredient by using hawthorn as a raw material and adopting an enzymatic leaching process, adding the sugar into the hawthorn juice and performing low-temperature controlled fermentation by using active wine dry yeast to obtain raw hawthorn wine; and performing biological de-acidification and wine body stability treatment on the raw wine, and obtaining the hawthorn wine by blending. The wine body stability treatment comprises the following steps of: adding a metal ion complexing agent to complex metal ions in the wine body to inhibit non-biological browning of the wine body; adding silica gel at a low temperature to adsorb cold muddy protein in the wine body; and adding biological antioxidant enzyme with anti-oxidation browning effect on the hawthorn wine into the wine. Malt dextrin, lactose and the like are added into byproducts after the hawthorn wine is processed, and the materials are mixed, dried, crushed and packed to obtain hawthorn fiber powder.

The invention belongs to the technical field of processing of pharmaceutical raw materials and particularly relates to a method for refining high-purity egg yolk lecithin through demulsification. According to the method, a lecithin crude product obtained through extraction with ethanol and supercritical carbon dioxide is further refined; significant progress is made after adoption of sulfate, so that an emulsion system formed by lecithin in the lecithin crude product and a minute quantity of neutral fat such as triglyceride, cholesterol and the like is damaged, phase separation of lecithin in the lecithin crude product and the neutral fat occurs, and furthermore, a minute quantity of neutral fat such as triglyceride, cholesterol and the like is removed through secondary cooling under the high-speed centrifugation condition, and the high-purity egg yolk lecithin is prepared through refining. The purity of the product is improved to 98% or higher, clean and pollution-free production of high-purity egg yolk lecithin is realized, and the requirement that the lecithin product is used as the pharmaceutical raw material is completely met.

The invention provides and designs a disposal technology and device for disposing SCR denitration catalyst regeneration in a factory. The technology comprises the steps that each working procedure of actual operation is executed starting from the procedure that an SCR catalyst module is conveyed to the factory, detection, carrying, flying ash removal, washing, acid pickling, rinsing, air drying, activation, drying, calcination and finished product packaging are performed; according to the technological process and disposal time of each working procedure, equipment is reasonably arranged, the carrying time is shortened, the number of links is reduced, time is reasonably utilized, and the production efficiency is improved; each disposal cell body is reasonably designed, control equipment is configured, a PLC control system is used, and disposal cell bodies are automatically operated, semi-automatic control over the overall disposal technology is achieved, and efficiency and disposal capacity are further improved; some water used by the technology is subjected to sedimentation, filtering and reutilization, and the cost and resources are saved; calcination and drying of a module are effectively combined together, the module is dried by means of waste heat of calcination, and energy sources are effectively saved.

The present invention discloses environmental protection type transparent solid glue. The glue comprises the following components, by weight, 40-50 parts of deionized water, 6-10 parts of an activator, 0.5-2 parts of an antifoaming agent, 15-20 parts of a lubricant, 20-30 parts of a moisturizing agent, 6-10 parts of sodium stearate, 20-30 parts of polyvinylpyrrolidone and 0.2-1 parts of a preservative. In addition, the present invention further provides a preparation method for the environmental protection type transparent solid glue. Compared to the prior art, the environmental protection type transparent solid glue provided by the present invention has characteristics of transparent color, high hardness, good moisture retention, smooth coating without dreg dropping, good oxidation resistance, environmental protection and no toxicity.

The invention discloses a rotary floating cutting numerical control machine tool for a silicon rod, and relates to a numerical control machine tool, in particular to a numerical control cutting machine for cutting the silicon rod. The rotary floating cutting numerical control machine tool comprises a numerical control box, a machine tool body, a transmission mechanism, and a cutting mechanism and a silicon rod clamping mechanism which are arranged on the machine tool body, and is characterized in that the silicon rod clamping mechanism comprises a driving rotation support wheel which clamps the silicon rod in a matching manner in the vertical direction, and a floating rotary pressing wheel; the floating rotary pressing wheel is connected with an elastic pressing device which drives the floating rotary pressing wheel to tightly press the silicon rod; and the transmission mechanism is connected with a shaft of the driving rotation support wheel. The rotary floating cutting numerical control machine tool can realize the non-concentric axial rotation floating radius cutting of polycrystalline silicon rods which have the characteristics that the material texture density is sparse, workpieces are bent in the axial direction, ovality exists in the diameter direction, the diameters are different, the appearances are not irregular, the breaking phenomenon is easy to generate, and the like in the floating rotation state, and is novel and capable of realizing the automatic radius cutting.

The invention relates to a production method for extracting magnesium hydrate and calcium carbonate from dolomite, and belongs to the technical field of chemical industry novel materials. The production method for extracting magnesium hydrate and calcium carbonate from dolomite comprises the following steps of (1) preparing caustic calcined dolomite powder; (2) guiding a mixture of the caustic calcined dolomite powder obtained in the step (1) and ammonium salt water solution into a reaction vessel to perform ammonia distilling reaction at 80 to 105 DEG C at the stirring speed of 200 to 1000r / min; after performing the reaction for 0.5 to 4 hours, performing suction filtration to obtain ammonia distilling liquid; recovering distilled ammonia gas into an ammonia gas storage tank through a gas-liquid mixer; (3) preparing magnesium hydroxide; (4) preparing calcium carbonate.