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

The present invention relates to the extraction and separation of effective components in Chinese medicine. The ginsenoside Rb1 separating process includes dissolving ginsenoside, American ginsenoside or notoginseng general saponin in small amount of eluant, adding to stabilized chromatographic column to elute while detecting until reaching negative, merging the elutriant of ginsenoside Rb1, reducing recovering solvent, vacuum freeze drying to obtain freeze dried ginsenoside Rb1 powder, inspection and packing. The present invention has the advantages of simple technological process, short production period, no pollution, low cost, high product purity over 95 %, and high yield up to 20 %.

The invention relates to a modified powder body filtration process for the surface of die casting magnesium alloy, which forms the gradient of alloy concentration on a surface layer of a die casting magnesium alloy part through an infiltration technology. The adopted technical proposal is as follows: different modified powder bodies without adding any adhesive are directly sprayed on the surface of a parting agent of a die casting mold, and a modification layer can be formed on the surface of the magnesium alloy part by casting liquid magnesium alloy in the metal casting mold by die casting and cooling. The process substantially changes the physicochemical property and the mechanical property of the surface of the magnesium alloy; the formed surface modification layer is continuous and compact, does not contain organic substances, and has good corrosion resistance and wear resistance; and the process simplifies the prior surface modification technology of the magnesium alloy, and realizes green, environment-friendly and pollution-free production. The process is simple, has easily controlled parameters and high rate of finished products, and can be widely used for industrial production.

The invention discloses a solar cell production process. The production process comprises the following steps: A, manufacturing polycrystalline silicon; B, making the polycrystalline silicon into a silicon ingot; C, cutting the silicon ingot into a silicon wafer; D, detecting the silicon wafer; E, carrying out the surface cleaning and texturing; F, etching and back polishing; G, performing silk-screen printing; H, sintering and plating a reflecting film; and I, detecting and packaging. According to the invention, the production process is adopted, all wastes in the whole production process canbe fully utilized, no waste is discharged, environment-friendly and pollution-free production can be realized, and various generated waste liquid can be used for recycling and treating scrapped failures and unqualified solar cells, the cleaning mode and the etching mode of the silicon wafer are improved, the technological process is effectively shortened, the required raw materials are easy to obtain, the production cost of the solar cell is reduced, and the benefits of the enterprise are 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 invention discloses a preparation method of 1,4-dioxane. The method comprises using a solid super acid resin as a catalyst for a catalytic reaction with diglycol, then using isopropyl ether to extract and dehydrate crude products in a high-efficiency extraction tower, and treating waste water by using a cation resin tower. The method successfully overcomes many insufficiencies of a tradition technology, brings revolutionary advances for production of the 1,4-dioxane, and realizes a long-term pollution-free production of the products.

The invention discloses a dump leaching technique of ground organism of secondary copper sulphide ore with high content of arsenic. The technique comprises the following steps: the secondary copper sulphide ore with high content of arsenic is crushed to 10 to 30mm, and acid mine water of mineral-leaching microorganism with thiobacillus ferrooxidans and thiobacillus thiooxidans is used for leaching the secondary copper sulphide ore with high content of arsenic; while most of the arsenic in the ore is still in leaching residue and a small part of the arsenic is in the leachate, faffinated and electrodeposition liquid; but closed cycle in the production has no effect on the extraction and electrodeposition and standard cathode copper product, thus avoiding the hazard of the arsenic to the environment. The technique has short process, little investment, low cost and energy consumption, no pollution and high rate of recovery, can process the copper ore with high content of arsenic which can not be processed by the traditional smelting technique, and also can process the secondary copper sulphide ore with high content of arsenic and similar secondary copper sulphide ore with high content of arsenic so as to expand the utilization range of resources.

The invention discloses an intelligent modularized continuous green devulcanizing and regenerating complete technology for waste rubber. A waste rtyre passes through intelligent fully-sealed type continuous crushing and separating equipment to carry out primary ring-cutting, tertiary crushing, secondary magnetic separating and primary airflow classifying to finally obtain required rubber particles; under the condition of not adding any chemical auxiliary agent, the rubber particles are fed into a screw rubber regenerator through a rubber quantitative feeder for being subjected to screw extrusion-shearing pure mechanical action, so that sulfur-containing molecular chains are selectively broken to break network structures of the sulfur-containing molecular chains, and therefore, green devulcanizing and regenerating of the rubber particles is realized; then, regenerated rubber enters intelligent filter equipment for filtering large particles, impurities and the like after being subjected to preliminary cooling; and finally, particle-shaped regenerated rubber is packed and stored after being waxed, cooled and dried. The intelligent modularized continuous green devulcanizing and regenerating complete technology for waste rubber disclosed by the invention realizes green, energy-saving, continuous, intelligent, efficient and safe production of the whole process from the waste tyre to particle-shaped regenerated rubber.

The invention relates to a stamping and filling type dumbbell and a manufacturing method thereof, wherein the stamping and filling type dumbbell can be manufactured without casting. The stamping and filling type dumbbell comprises a dumbbell. Two dumbbell balls and a handle connecting two dumbbell balls are constituted of two halves of two metal stamping dumbbell ball shells and the mixed slurry is filled into the dumbbell cavity formed thereby. The dumbbell and the manufacturing method have the advantages that: firstly, the dumbbell made by stamping, welding and filling is high in strength as well as good in toughness, thus greatly reducing the production cost; secondly, the texture distribution in the dumbbell body is even and stable and cannot move along with the movement of the dumbbell, thus satisfying the requirements of training; and thirdly, defects that a large amount of coal is consumed in the production of casting dumbbells and environment is polluted are resolved basically, thus realizing pollution-free production.

The invention relates to a combined firing method of active carbon and quicklime, which is characterized in that a firing kiln is adopted alone; raw materials used by an active carbon kiln of the firing kiln are machine-made bar materials or shells made of various plants, and the carbonization process of the bar materials is carried out by self combustion of the bar materials and the like, thereby producing carbonized material products; fumes generated by the active carbon raw materials generate high-temperature hot fumes by gas combustion, and then the high-temperature hot fumes as energy resources are supplied to a quicklime kiln; quicklime products are produced under the condition that limestone raw materials in the quicklime kiln are indirectly baked and calcined by the high-temperature hot fumes, and the fumes in the quicklime kiln are led to the active carbon kiln for use. The invention completes the carbonization process in a carbonization kiln mainly by self energy of the raw materials, and completes the curing calcining process of the limestone in a lime kiln by using the waste heat of the fumes of the carbonization kiln. The energy resource is saved and the environment is not polluted on the premise that qualified products can be produced, so that the combined continuous production can be carried out. Moreover, equipment has simple structure, low manufacture cost and low operation cost, thereby having popularization value.