152results about How to "Realize environmentally friendly production" patented technology

The invention relates to a pipe pile water curing method. In the method, a water storage tank is arranged, and condensate water and residual steam in a still kettle are guided into the water storage tank; a pipe pile is placed in a steaming and curing pool, the condensate water in the water storage tank is guided into the steaming and curing pool, and the residual steam in water storage tank is guided into the steaming and curing pool; and steaming and curing the pipe pile in the steaming pool for 4-5 hours at 80-90 DEG C. The curing device comprises the steaming and curing pool, the water storage tank and the still kettle, wherein the steaming and curing pool is provided with a water-steam port; the water storage tank is provided with a residual steam outlet, a residual steam inlet, a condensate water outlet and a condensate water inlet; and the still kettle is provided with a steam inlet and a steam outlet. A condensate channel is arranged between the water-steam port of the steaming pool and the condensate water outlet of the water storage tank, and a steam channel is arranged between the water-steam port of the steaming pool and the residual steam outlet of the water storage tank. The condensate water inlet of the water storage tank is communicated with the condensate water outlet of the still kettle through a third electric control valve and a pipeline, and the steam inlet of the water storage tank is communicated with the steam outlet of the still kettle through a second steam valve and a pipeline.

The invention provides a method for extracting levodopa from cat beans. The method comprises the following steps: flattening the cat beans and putting the cat beans into a reaction kettle with a water solution containing dissolved ammonium hydrogen carbonate, ammonium sulfate, tannic acid and sodium pyrosulfite; pressurizing with carbon dioxide; raising the temperature and extracting to obtain an extracting solution and cat bean dreg; precipitating the extracting solution by utilizing chitosan and filtering; after primarily separating impurities, decompressing and concentrating filtrate; separating out a crude product; eluting the crude product with an ethanol solution; recycling eluted ethanol and taking a filter cake; purifying the filter cake by adopting a traditional refining process; standing and separating out crystals; filtering to obtain the crystals; drying the crystals to obtain the levodopa with the content of no less than 99 percent and the yield of no less than 3 percent. Compared with a traditional acid water-resin process, a product of the extracting method provided by the invention is equivalent and the yield of the product can be improved to 3 percent from previous 2.5 percent; the emission amount of wastewater containing acid and alkali is reduced by 95 percent or more, and 60 percent of labor force can also be saved.

The invention discloses a continuous production device for calcining and whitening black talc and a production process thereof. The continuous production device comprises a coarse particle suspension preheater, a white talc rotary kiln and a grate type cooling machine with a heat preservation kettle, which are sequentially connected; the production process comprises the following steps: A. superfine-grinding black talc; B. preheating by a preheater at the kiln tail; C. calcining in the rotary kiln; and D. preserving heat by the heat preservation kettle and cooling. The design of the coarse particle suspension preheater is adopted and the tail gas waste heat of the white talc rotary kiln is fully utilized, so that the energy consumption is reduced; the calcining efficiency is improved due to a pickaxe-shaped spiral pushing device of the rotary kiln and spirally-arranged heat-resisting bricks with ribs, and the grate type cooling machine with the heat preservation kettle can achieve excellent heat-preservation and cooling effects; and the continuous production device can achieve large-scale continuously-mechanical production for calcining white talc and adopts center-control automatic operation, so as to greatly improve the labor productivity and achieve stable quality and environment-friendly production, thereby having good economic and environment-protection benefits.

The invention relates to a wide-angle latex-dipped canvas and a production process thereof, belonging to the technical field of textile. The production process comprises the steps of angle adjustment, weaving, latex dipping, drying, shaping and packaging. The weaving included angle between the warp thread and the fill thread of cloth weaved by the process is 1-179 degrees, and the outer surface of weaved wide-angle canvas is soaked with a layer of latex. The invention has the advantages that a warp and fill thread has high angle stability, and the product has strong adhesivity; when in use, the product can be processed by mechanical latex spreading, latex pasting, dipping and latex scraping, and the angles of the warp and fill threads of canvas are not changed. With high finished productrate, simple production process and low cost, the wide-angle latex-dipped canvas can be used as the framework of rubber, plastic and such products or used as wrapping material.

The invention discloses an automatic impregnation machine for a latex tube. The machine comprises a shell, a traction mechanism and a plurality of upper pulleys, middle pulleys and lower pulleys. The equipment has a simple and practical structure and a high automatic degree, does not need a large quantity of manpower and material resources or steam, cannot generate waste smoke or wastewater, adopts an electric heating mode, greatly improves the production condition, and realizes environment-friendly production; and impregnation and drying are repeated for multiple times in the process of producing the latex tube until the requirement of a processing technology is met. The original outdated workshop production mode is changed, and automatic mechanical production is adopted, so that the production speed of the latex tube can reach 10 to 15 meters/min, production efficiency is dozens of times the original production efficiency, large-scale production can be realized, and high practical value is achieved.

The invention discloses high-temperature-resistant silicon molybdenum ferrite nodular cast iron for a steam turbine and a preparation technology therefor. The nodular cast iron comprises components: 3.0-3.5% of C, 2.8-3.2% of Si, less than 0.2% of Mn, less than 0.040% of P, less than 0.015% of S, 0.5-0.8% of Mo, less than 0.010% of Re, 0.040-0.055% of Mg, and 0.004-0.007% of Sb, the balance being iron and residual elements. The preparation technology comprises furnace charge matching; intermediate frequency induction furnace fusing; spheroidizing and addition of first inoculation ferrosilicon; control of contents of elements; pouring into a pulling runner box for secondary inoculation; casting moulding. The obtained nodular cast iron has good combination properties and a low cost, the nodularity reaches more than 80% of the nodularity prescribed by GB/T9441-2009 nodular cast iron metallographic examination, the ferrite amount is more than 90%, and normal temperature and high temperature mechanical properties meet production requirements.

The invention provides an automatic scaffold welding machine. The welding machine is used for automatic welding of a main steel pipe serving as a vertical rod in a steel pipe scaffold with socket andspigot joints and a socket pipe and an U-shaped socket part. The welding machine comprises a base, the front side of the base is provided with a three-shaft position-changing device for switching a feeding station with a workpiece to be welded and a welding station and realizing rapid welding of the two surfaces of the workpiece to be welded through 180-degree-rotation of the welding station; twogantry type welding gun supports which are vertically arranged are installed on the two sides of the rear side of the base, a cross frame beam is arranged between the two welding gun supports, and thecross frame beam is provided with a spot welding mechanism which is used for carrying out spot welding on the socket pipe which is at the welding station of the three-shaft position-changing device and fixed on the main steel pipe and a multiple sets of double-gun welding mechanisms which are used for simultaneously welding weld joints of all U-shaped socket parts; and one end of the cross framebeam is provided with a welding gun walking mechanism which is used for pulling the multiple sets of double-gun welding mechanisms to move at the same time to carry out welding on the welding joints of all the U-shaped socket parts correspondingly. The invention further provides a welding method of the automatic scaffold welding machine.

The invention discloses a method for preparing vanadium pentoxide by treating a vanadium-containing waste sulfuric acid catalyst through a two-step method. The pH value is controlled to be 5-6 throughoxalic acid leaching in a first step, namely the leaching rate of vanadium is controlled to be between 65% and 75%, and simultaneously a large amount of impurities (Al, Ni, Cu and the like) are inhibited from being separated out; the PH is controlled to be 1.5-2.0 through sulfuric acid leaching in a second step, the leaching accumulation of vanadium is controlled to be larger than or equal to 90%, meanwhile, a small amount of impurities such as Al are leached, leaching liquid returns to the first step of oxalic acid leaching (when the small amount of impurities leached in the second step return to the first step of leaching, precipitates are generated again and enter slag), and meanwhile, the first-step leaching is completed by utilizing the temperature of the leaching liquid, so that thecost is reduced; leaching residues are washed in the second step, the leaching residues are centrally collected, lime is added to be mixed, and the mixture is sold to a cement plant to serve as clinker of the cement plant; the leaching liquid is prepared after the first step of oxalic acid leaching, vanadium precipitation of ammonium sulfate is directly adopted to prepare an ammonium polyvanadateintermediate product, concentrated sulfuric acid needs to be added in the production process, residual oxalic acid in the leaching liquid completely reacts with the concentrated sulfuric acid to eliminate obstacles for subsequent water treatment, and solid ammonium sulfate prepared after water treatment returns to a production system, and potassium sulfate is purified and sold to potash fertilizer production enterprises to be used as a raw material.

The invention relates to a combined technology for treating copper sulfide ore. The combined technology comprises a biological heap leaching technology, a stirring and leaching technology, and a flotation and fire-process technology; an ore body is divided into three types according to the following technology: firstly, carrying out crushing, ore grinding and flotation on deep-layer ore to obtaincopper concentrate and floated tailings; carrying out fire-process smelting on the copper concentrate to obtain crude copper and sulfuric acid; carrying out electrolytic refining on the crude copper to obtain cathode copper, copper sulfate and anode mud; recycling rare bulk noble metal from the anode mud; then stirring and leaching by utilizing sulfuric acid generated by a fire process, and carrying out crushing, ore grinding, acid leaching, biological stirring and leaching, extraction and electrodeposition on shallow-layer ore to obtain the cathode copper; carrying out the biological stirringand leaching to obtain a copper leaching solution and carrying out biological heap leaching; carrying out crushing, acid leaching, biological heap leaching, extraction and electrodeposition on surface ore to obtain the cathode copper; carrying out biological heap leaching to obtain a copper leaching solution; then commonly extracting the copper leaching solution of the two steps to obtain an electric pregnant solution and raffinate; and carrying out electrodeposition on the pregnant solution to obtain the cathode copper. The combined technology provided by the invention has the advantages ofcomplementary technology advantages, acid balance in a production process, environment friendliness, high comprehensive recycling rate, remarkable economic benefits, no resource waste and the like andis suitable for application of extracting the copper from various copper sulfide ores.

The invention provides a novel weather-resistant amino-containing polysiloxane-acrylic ester oligomer for photocuring of LED (light emitting diodes). The polysiloxane-acrylic ester oligomer is prepared by the following steps of using amino-terminated polysiloxane in formula I as raw material, reacting with one or two types of single-function group acrylic ester or methacrylate, and then reacting with one or two types of double-function group acrylic ester or methacrylate, so as to obtain the oligomer shown in the attached figure. The polysiloxane-acrylic ester oligomer has the advantages that a large amount of tertiary amine structures and siloxane structures is contained, the anti-oxidizing and polymerization inhibition effects of a photocuring formula under an LED light source are greatly improved, and the surface dryness function of a coating is promoted; the compatibility is good, the preparation is easy, the cost is low, and the storage is easy.

The invention relates to a marine polyester cable and a preparation method thereof. The marine polyester cable is prepared by the following steps: twisting modified polyester industrial yarns, and performing impregnation treatment on the woven rope, thereby obtaining the marine polyester cable. The modified polyester industrial yarns are prepared by performing solid phase polycondensation tackifying on modified polyester melt and performing spinning; the preparation method of the modified polyester before solid phase polycondensation tackifying comprises the following steps: uniformly mixing terephthalic acid, ethylene glycol, dihydric alcohol containing silicon on the main chain, 2,5,6,6-tetramethyl-2,5-heptandiol and metal oxide doped modified Sb2O3 powder, and sequentially carrying outan esterification reaction and a polycondensation reaction; the dihydric alcohol containing silicon on the main chain comprises dimethyl silicone diol, dimethyl diphenyl disiloxane diol or tetramethyldisiloxane diol; and the prepared marine polyester cable has the linear density of 1200+/-3ktex and the breaking strength of more than or equal to 480kN. The method disclosed by the invention is simple in process, and the prepared marine polyester cable is high in breaking strength and high in quality.

The invention relates to a preparation device for a pearl essence selenium-enriched nutrient solution. The preparation device comprises a housing, wherein the housing is internally provided with a smart seat, a reactive oxygen molecule destruction device, a reaction tank, a stainless steel screen mesh, a booster pump, a reactive oxygen molecule generating device, a PP cotton filtering core, connecting pipelines, connecting water pipes and a faucet. Pure water enters the reaction tank through the smart seat. In the reaction tank, through a super-high oxidative decomposition effect of active oxygen molecules, beneficial substances of pearl powder and black jade are effectively promoted to be released in water to obtain suspension rich in various trace elements such as amino acids, polypeptides, selenium and the like. The suspension is filtered through the stainless steel screen mesh to remove large particulate matter and then filtered through the PP cotton filtering core to obtain the pearl essence selenium-enriched nutrient solution. According to the device, introduction of harmful additives is avoided, the risk of a preparation process is reduced, process flows are simplified, lessland is occupied, energy consumption is low, environmentally friendly production of the pearl nutrient solution is achieved, preparation of the pearl nutrient solution is introduced to daily life, and the device has a great popularization prospect and a high application value.

The invention relates to an easily-dyed porous modified polyester fiber and a preparation method thereof. The easily-dyed porous modified polyester fiber is prepared by a porous spinneret plate through an FDY process. The preparation method of modified polyester comprises the following steps: uniformly mixing terephthalic acid, glycol, dihydric alcohol with a silicon-containing main chain, 2,2,3,4,5,5-hexamethyl-3,4-hexanediol and a metal oxide doped and modified Sb2O3 powder, and sequentially carrying out esterification reaction and condensation polymerization reaction, wherein dihydric alcohol with the silicon-containing main chain is dimethylsilyl diol, dimethyl diphenyl disiloxane diol or tetramethyldisiloxane diol, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol isas follows: formula (shown in the description). The dyeing rate and K/S value of the prepared easily-dyed porous modified polyester fiber are high. The method is simple in process, and the finally prepared modified polyester fiber is good in dyeing performance and good in quality.

The invention relates to cutting equipment special for polycrystalline silicon processing and aims to provide a diamond wire crystal ingot squarer. The diamond wire crystal ingot squarer comprises a large bottom frame, a workbench, a workbench horizontal moving motor, a speed reducer, a main screw, a manipulator part, a cutting chamber part, a lifting mechanism, a take-up and payoff part, a tension part and a bottom guide wheel part. According to the diamond wire crystal ingot squarer, a diamond wire saw is adopted for cutting, a cutting mark is small, a cutting face is high in quality, material loss is reduced greatly, and the work environment is improved. According to the diamond wire crystal ingot squarer, a novel rotary mechanism is adopted for decreasing the height of the workbench, and thus the axis distance of a cutting guide wheel is reduced. The wire arch is small, cutter feeding is fast, the cutting efficiency is high, and the cutting dimensional deviation caused by a hard point is avoided. According to the diamond wire crystal ingot squarer, a horizontal moving function is added to a bottom guide wheel, a cutting line is changed into an oblique line from a vertical line during second time of cutter feeding, only a cutting-in opening is cut in the upper portion of a crystal ingot, and thus the uncontrollable size and edge breakage are avoided.

The invention discloses a dust treatment device used in stone material processing, which includes a workbench, two auxiliary fixing boards, and two dust collecting covers. The auxiliary fixing boards are fixed to both sides of the workbench. A screw rod is movably installed in the inner side of each auxiliary fixing board through a bearing. Two ends of each screw rod respectively penetrate through the two ends of each auxiliary fixing board and are respectively connected to adjustment knobs. A moving block is movably installed on each screw rod. Each dust collecting cover is respectively fixed on one side, which is closed to the workbench, of each moving block. Four supporting legs are installed on the four corners of the bottom of the workbench through bolts. A first mounting plate is fixedly connected between the four supporting legs. A second mounting plate is arranged above the first mounting plate and is fixedly connected between the four supporting legs. A water tank and a settlement tank are arranged parallelly on the first mounting plate. A sprinkling box is installed on the second mounting plate. A water solution in the settlement tank can be recycled, so that the dust treatment device not only effectively removes dust but also is reduced in production cost and saves water resource.

The invention discloses a method for machining and preparing a copper anti-scale micro-nano composite structure layer by electric spark. The method comprises the steps that a copper block is installedon an electric spark molding machine fixture, and the sufficient contact of the copper block and the fixture is guaranteed; the spraying direction of an electric spark machining liquid spraying mouthis adjusted to point to the surface of the copper block and form an angle range of 2-15 degrees with the surface of the copper block, and electric spark machining parameters are set; and an electricspark molding machine is started to machine the surface of the copper block, the machining depth is 1-2 mm, macroscopic electrical erosion characteristic structures are evenly distributed on the surface of the copper block, and the copper anti-scale micro-nano composite structure layer is obtained. The method for machining and preparing the copper anti-scale micro-nano composite structure layer bythe electric spark is simple and efficient, the copper anti-scale micro-nano composite structure layer can be prepared by only one machining procedure, an electric spark machining liquid can be recycled, the pollution of machining waste liquids to the environment is reduced, and the additional cost caused by treatment of the waste liquids is lowered.

The invention relates to a method for preparing combustible gas from municipal domestic waste and plant waste, which comprises steps as follows: after mixing and pulverizing selected municipal domestic waste and plant waste, the mixture is sent into a synthesizing tower to be subjected to pyrolysis, and generated gas is filtered by a water filter tank, a CO2 filter, a sponge filter tank, a palm leaf filter tank and an active carbon filter tank, and sucked into a gas storage tank to be stored. The invention also provides a synthesizing tower for preparing combustible gas. A jacket above a high-temperature rotating heating unit penetrates through the upper wall of the synthesizing tower body and is communicated with a second material warehouse, a mixer is arranged in the second material warehouse, and a deslagging port on the bottom of the synthesizing tower body is provided with a deslagging propeller. The method for preparing combustible gas from municipal domestic waste and plant waste and the synthesizing tower provided by the invention can be used for preparing combustible gas by treating municipal domestic waste and plant waste, and synthesizing methanol by directly utilizing or utilizing the existing equipment and technique, thereby saving the energy sources and protecting the environment.