31results about How to "Avoid problems such as corrosion" patented technology

The invention discloses a nitrogen purging-assisted organic exhaust gas recycling method through the pressure swing adsorption of adsorbent resin. The organic exhaust gas recycling method comprises the following steps: (1) adsorption, namely performing adsorption when exhaust gas including volatile organic compounds (VOCs) enters an adsorber filled with the macroporous adsorption resin by a gas collection system; (2) desorption, namely vacuumizing the adsorbent resin in the adsorber and purging the adsorbent resin by using nitrogen in an auxiliary manner to desorb the adsorbed VOCs from the adsorbent resin to obtain the desorbed gas; and (3) recycling, namely condensing or absorbing the desorbed gas to recycle the VOCs. The adsorbent adopted by the method disclosed by the invention is the macroporous adsorption resin, the surface of the macroporous adsorption resin has no catalytic performance and has the characteristics of being easy to regenerate, high in mechanical strength, great in volumetric adsorption capacity and the like. A adsorption technique assisted by nitrogen purging in vacuum at normal temperature is high in adsorption efficiency and has the very excellent recycling effect on VOCs gas which can be easily oxidized and hydrolyzed or is high in solubility.

The invention discloses a method and device for continuously producing chlorinated polyvinyl chloride by a low-temperature plasma circulating bed, relating to a production technology and equipment for macromoleclar polymer chlorinated polyvinyl chloride. The device comprises a chlorinated polyvinyl chloride particle storage bin, a chlorinated polyvinyl chloride storage bin, two parallel fluidized bed reactors, two parallel riser reactors, a downer, a tail gas purifier and two circulating fans which are respectively used for transporting riser conveying gas and transporting raw material gas. In the device, the low-temperature plasma is utilized to simultaneously activate chlorine and PVC (poly vinyl chloride) raw material particles to quickly chloridize PVC in the circulating fluidized bed; and meanwhile, two groups of fluidized bed reactors are adopted for operation in turn to realize continuous production. Thus, the problems of low production efficiency and the like brought by that the reactor stops and unloads can be avoided, the phenomenon that fans, tail gas processors and the like are restarted after stopping can be eliminated, energy consumption is saved, and the service life of equipment is prolonged.

The invention belongs to the technical field of electromagnetic induction, in particular relates to a device for real-time measurement of fluid conductivity by use of electromagnetic method, and aims at the conditions of low fluid conductivity, and little effect on the amplitude of electromagnetic mutual inductance signals; the device uses a method of excitation frequency adjusting and phase component extracting to replace the amplitude for extraction of useful information to the maximum in order to obtain the most accurate measurement results; aiming at the condition that the measurement of fluid conductivity by use of the electromagnetic method is susceptible to the interference of the surrounding electromagnetic environment, the device uses a method of real-time calibration and probe shielding to prevent measurement result drift caused by electromagnetic interference; and aiming at the problem that the high frequency signal transmission is susceptible to noise interference when the fluid conductivity is low and the excitation signal frequency is high, the device uses a method of coaxial cable shielding for signal transmission to ensure the signal stability and reliability.

The invention discloses a conformal cooling channel with hydrophobic effect and a production method thereof. The method comprises the following steps: (1) preparing hydrophobic coating powder materials; (2) designing a three-dimensional model with a conformal cooling channel die, and performing slicing treatment; (3) placing die metal powder and hydrophobic coating powder; (4) carrying out shapingtreatment, specifically comprising first performing shaping on the die metal powder by using an SLM (selective laser melting) technology, then performing shaping on the hydrophobic coating powder byusing an SLS technology to form a powder leveling layer; (5) repeating step (4) until the whole conformal cooling channel is completed; (6) taking off the shaped die. Through improving and optimizingthe key material types of inner wall hydrophobic coating and corresponding specific shaping technology, the conformal cooling channel with hydrophobic coating can be obtained, and the technical problems that the cooling efficiency of a die cooling system is low, the conformal cooling channel is easy to block, the surface metal is easy to corrode and the like are solved.

The invention relates to a method for preparing nanoscale ferroferric oxide from steel pickling wastewater. The method comprises the following steps: filtering steel pickling wastewater to remove suspended solids out of wastewater; oxidizing partial divalent iron ions in wastewater into trivalent iron ions, controlling the molar ratio of divalent iron ions to trivalent iron ions to be (1: 1.7)-(1:1.9), and stopping adding an oxidant; controlling the concentration of an aid in wastewater at 1g/L-5g/L; adding a pH regulator to regulate the pH value of wastewater to be 10-12; adding 2g/L-4g/L of sodium metasilicate; further heating the obtained solution to 60-80 DEG C, maintaining the temperature for 1-3 hours, and naturally cooling to the room temperature; after carrying out solid-liquid separation, washing and drying obtained solid powder, so as to obtain nanoscale ferroferric oxide. According to the method, steel pickling wastewater can be subjected to effective resourceful treatment, and nanoscale ferroferric can be prepared by virtue of divalent iron ions contained in wastewater.

The invention discloses a method for preparing a porous oxide film on a metal carrier surface. The method comprises the following steps: I, performing surface processing on a metal carrier to remove oxide skin and impurities on the surface of the metal carrier; II, selecting oxide and oxide sol according to a to-be-prepared porous oxide film, and then uniformly mixing raw materials to prepare slurry; III, coating the slurry to the surface of the surface-treated metal carrier; IV, drying and putting the metal carrier in a sintering furnace, preserving the temperature and sintering under a reducing atmosphere, and obtaining a porous oxide film with thickness not larger than 100 microns on the surface of the metal carrier after cooling with the furnace. The method improves the film-forming performance of the porous oxide on the metal carrier surface in the film-forming process, avoids problems of corrosion and the like as electrochemical reaction is possibly caused by adopting a water-soluble sol system during a film layer drying period, shortens the film-layer drying process time, and reduces the sintering temperature of the film layer. The prepared porous oxide film is bonded with the metal substrate very well.

The invention provides a detection method and a detection device for chlorine content in blast furnace gas. The detection method comprises the following steps of S1, acquiring the volume of to-be-detected blast furnace gas; S2, introducing the to-be-detected blast furnace gas into a first reaction solution and a second reaction solution in sequence, enabling the to-be-detected blast furnace gas tofully react with the first reaction solution, and filtering to obtain filtrate; and S3, detecting the mass of chloride ions in the filtrate by potentiometric titration, and calculating the chlorine content in the blast furnace gas, wherein the chlorine content is the concentration of chloride ions in unit volume of the blast furnace gas, and the calculation method is described as follows, in theformula, C is the chlorine content in the blast furnace gas, V is the volume of the to-be-detected blast furnace gas, and m is the mass of chlorine in the blast furnace gas with the volume V. By adopting multiple absorption, the chlorine in the blast furnace gas is completely absorbed, and hydrogen sulfide and carbon dioxide are completely converted into precipitates to eliminate interference on chlorine ion determination; the mass of chloride ions in the filtrate is measured by potentiometric titration, the operation is simple and rapid, and the result is accurate.

The invention discloses sewage treatment sludge active carbon having continuous pore size distribution, and a preparation method thereof. According to the preparation method, ZnCl2, phosphoric acid, K2S and NaCl form a compound activator in anoxic atmosphere to activate sludge, wherein the mesoporous structure is developed mainly by using the phosphoric acid, and the K<+> content and the Na<+> content of the sludge active carbon are increased so as to easily enhance the replacement with heavy metal ions in sewage; and activation is performed with water vapor to generate rich micro-pores in the mesoporous surface, such that the BET specific surface area of the finally obtained sludge active carbon is not less than 400 m<2>/g, and the pore size is continuously distributed within 0.5-50 nm. According to the present invention, the prepared sludge active carbon adopted as the sewage treatment adsorbent adsorbs heavy metal ions using Pb<2+> as the representative and macromolecular pollutants in the sewage, and has good effects.

The invention provides a display panel, a preparation method thereof and a display device, and the display panel comprises a substrate and an OLED device arranged at one side of the substrate; a firstthin film packaging layer which is arranged at one side, deviating from the substrate, of the OLED device; a water absorption and oxygen storage layer which is arranged at one side, deviating from the substrate, of the first thin film packaging layer; a second film packaging layer which is arranged at one side, deviating from the substrate, of the water absorption and oxygen storage layer, wherein the water absorption and oxygen storage layer can absorb water vapor and oxygen in the display panel. According to the technical scheme, the water absorption and oxygen storage layer is arranged toabsorb water vapor and oxygen in the display panel, the water vapor and the oxygen can be effectively prevented from entering the OLED device, so the problems of electrode corrosion and the like caused by the water vapor and the oxygen are solved. Therefore, the reliability and the service life of the display device can be improved.

The invention provides a pedal feeling simulator applied to a brake-by-wire system and a control method of the pedal feeling simulator. The pedal feeling simulator comprises a brake pedal, a pedal push rod, a simulator cylinder body, a first piston, a second piston, a third piston, a first spring, a second spring, a third spring, a pedal force adjusting device, a pedal displacement sensor, a pedalforce sensor and an electronic control unit ECU. Pedal displacement and pedal displacement rate signals of a driver under specific working conditions are collected, the driving habits of the driver are classified into a sharp type, a general type and a cautious type through a K-Means clustering or hierarchical clustering algorithm, and personalized pedal feeling adjustment is achieved according to the driving habit classification result of the driver or the will of the driver. The structure is simple, the cost is low, and accurate adjustment of the pedal force and accurate identification of the braking intention of a driver can be achieved.

The invention belongs to the field of salt preparation brine treatment, and particularly relates to a high-concentration salt preparation brine air floating treatment method. The method comprises four steps of 1, a water inlet and chemical adding stage; 2, a coagulation stage; 3, an air floating stage; 4, a slag scraping and defoaming stage. In the step 3, a microporous aerator is arranged in an air floating pool contact region; the pore diameter of the microporous aerator is smaller than or equal to 0.1mum; the aeration intensity is 1 to 3 Nm<3>/(m<2>/h); the water flowing speed in the aeration region is 5 to 9m/h; the contact time is 11 to 20min; after the air floating contact is completed, the materials enter an air floating separation region; the separation time is 40 to 75 min; after the upward floating of the floating slag, the floating slag is collected and enter a floating slag groove; the treated brine enters an air floating clean water region; the brine in the clean water region flows out through an overflowing opening and enters a water producing pool. The high-concentration salt preparation brine air floating treatment method has the advantages that the floating water producing particle diameter can be 1 to 1.5 mum; a great amount of colloid and suspension contaminants are effectively removed. The air floating treatment method is used, and the slat concentration of the salt preparation brine cannot be reduced.

The invention relates to a lithium battery liquid injection head, and the injection head comprises a liquid injection cavity, wherein one end of the liquid injection cavity is a sealed end, the other end of the liquid injection cavity is a liquid injection end, a liquid injection needle is installed in the liquid injection end and communicated with the interior of the liquid injection cavity, a vacuum cavity is installed outside the liquid injection end, a battery jar for accommodating a lithium battery is arranged at the outer end part of the vacuum cavity, a liquid outlet head of the liquid injection needle corresponds to a liquid injection hole in the lithium battery in position, and the liquid injection needle is communicated with the interior of the vacuum cavity; a liquid injection sealing rod used for sealing the liquid injection needle is arranged in the liquid injection cavity, and a driving piece is arranged at the outer end of the liquid injection sealing rod. The lithium battery liquid injection head has the advantages of simple structure, high liquid injection efficiency, good liquid injection effect and the like.

The invention relates to the technical field of comprehensive utilization (environmental protection) of resources, in particular to a novel sludge resource gradient utilization method. The technical scheme adopted by the invention is as follows: the method comprises the following steps: carrying out fine grinding treatment on collected sludge; jointly adding water, the sludge treated in the previous step and a suspending agent into a stirring tank, and fully mixing to prepare slurry; conveying the slurry into a pump pool, and then performing separation operation through a separation system, wherein the whole separation system adopts closed-loop circulation; and concentrating and filter-pressing the sorted silicate non-metal and metal regenerated material to prepare a filter cake. The method has the advantages that a brand new processing method is adopted, the sludge can be efficiently and thoroughly treated in a stepped treatment mode by adopting a step-by-step processing method, the processing cost is lower, the treatment effect is better, and the whole process is environment-friendly and pollution-free.

The invention relates to a binary oil displacement system containing a bio-based surfactant and a biopolymer and application of the binary oil displacement system. The binary oil displacement system comprises 0.5-3.0 g/L of the bio-based surfactant and 1-3.0 g/L of the biopolymer. The biopolymer is a biopolymer HS-EPS which is extracted after the fermentation of the Ammomonas; the bio-based surface active agent is a benzyloxy-oleoyl quaternary amine type surface active agent. Compared with the prior art, the method has the advantages that the traditional oil displacement polymer polyacrylamide is replaced by the ammonia alcohol monad biopolymer with excellent salt tolerance, and the obtained binary compound oil displacement system can show ultralow interfacial tension and has better temperature resistance, NaCl resistance, Ca < 2 + > resistance, dilution resistance, adsorption resistance, interfacial tension and viscosity maintenance performance; the surfactant can be applied to high-salinity oil reservoirs, so that the application range of the benzyloxy-oleoyl quaternary amine type surfactant is effectively widened, and the recovery efficiency is further improved on the basis of the characteristic of ultralow interfacial tension.

The invention relates to a PCB conveying and curing system after copper plating. The system comprises a hanging basket, a conveying device and a board curing device. The PCB conveying and curing system after copper plating designs the conveying device; a conveying channel for conveying the hanging basket of the conveying device can be lifted; and a hanging basket placing position in the board curing device can be ascended or descended in a board curing tank, so that the conveying channel can be controlled to be in butt joint with the hanging basket placing position. The PCB conveying and curing system after copper plating needs no manual operation to hoist the hanging basket in the whole board unloading, curing and electric loading process, saves both time and labors, and is safe and reliable; and when boards are electrically loaded, production board can be taken out in sequence, so that the scratch of the production boards can be effectively prevented, and the product yield is increased.