34results about How to "Avoid Acid Corrosion" patented technology

The invention discloses a method for preparing NaY zeolite, and solves the technical problems in the prior art that the energy consumption is high, equipment is severely corroded, the zeolite output is low, the environment is polluted, and the like, which are caused during NaY zeolite preparation. Therefore, the invention provides a novel method for preparing the NaY zeolite. The technical scheme of the novel method comprises the following steps: raw materials are prepared; bentonite is ground and processed to 200 meshes below; activating treatment is conducted by using high temperature lye; a die is adjusted; seed crystals or directing agents are added; standing and ageing are conducted; crystallization is conducted; and then filtration, washing and drying are conducted. Through the adoption of the technical scheme provided by the invention, the problems in the prior art are solved, and the technical effects that the energy consumption is low during preparation, the cost is low, the raw materials are easy to manufacture, no pollution is caused, instruments and the equipment cannot be damaged, and the like are achieved.

The invention discloses a shielding paper processing method, which comprises: raw material selection: selecting aluminum foil paper and high-voltage electric cable paper; adhering: integrally the aluminum foil paper and the high-voltage electric cable paper through an adhesive; drilling: drilling holes on the adhered aluminum foil paper and the adhered high-voltage electric cable paper by using afine pinhole drilling machine; and winding: winding the shielding paper with the holes on a transformer. According to the present invention, the aluminum foil paper and the high-voltage electric cablepaper are adhered, and the hole is drilled on the aluminum foil paper and the high-voltage electric cable paper, such that oil can be effectively immersed, the shielding can be effectively formed, and the electric signal can be effectively shielded; and by using the non-acid non-fat adhesive, the acid corrosion can be avoided, and the service life can be prolonged.

The invention provides a strong-acid high-temperature resistant cationic resin catalyst and a preparation method thereof. The strong-acid high-temperature resistant cationic resin catalyst is preparedfrom styrene and divinyl benzene through suspension polymerization, and is prepared by using a preparation method of structure stabilization, halogenation, sulfonation and active group stabilizationafter suspension polymerization, wherein the water phase of the catalyst is a mixture of lauryl sulfonated succinic acid monoester disodium, lauryl alcohol phosphoric acid ester potassium and water; and the oil phase of the catalyst is a mixture of styrene, divinyl benzene and benzoyl peroxide. The catalyst prepared by using the preparation method is high in both catalysis activity and high temperature resistance, is particularly applied to a sec-butyl acetate synthesis reaction and is excellent in thermal stability, and the total conversion rate of the catalyst is up to 90% or higher.

The alkaline water-base cutting liquid for silicon wafer and other semiconductor material consists of polyglycol of molecular weight 200-1000 in 30-90 weight portions, pH regulator 9-30 weight portions, chelating agent 1-10 weight portions and deionized water for the rest. The present invention has the beneficial effects of homogeneous stable chemical splitting effect coexisting with the mechanical effect, less stress, lowered damage of the semiconductor material, raised chip cutting efficiency and quality, simple post-treatment, and avoiding the chemical bonding and adsorption on the surface of silicon wafer.

An electrolyte comprises tetrafluoroborate ionic liquid and an alkyl diimine compound dissolved in the tetrafluoroborate ionic liquid. The mass ratio of the tetrafluoroborate ionic liquid and the alkyl diimine compound is 1 :( 0.001-1):0.05. In the electrolyte, the added alkyl diimine compound can be combined with an H bondof water molecules, and accordingly water is prevented from participating in an electrode reaction so as not to produce acid to corrode aluminum foil of a double-layer capacitor, stability of the double-layer capacitor using the tetrafluoroborate ionic liquid as the electrolyte can be greatly improved, the stability of the double-layer capacitor using the electrolyte can be greatly improved by adding the alkyl diimine compound, and cost is lowered.

The invention provides a flue gas deacidification and dust removal system. The flue gas deacidification and dust removal system comprises a deacidification tower, a slurry tank, a dry powder injectiondevice, a bag type dust collector and a circulating heater, wherein the slurry tank, the deacidification tower and the bag type dust collector are sequentially communicated, a dry powder injection port is connected to a pipeline between a flue gas outlet of the desulfurization tower and a gas inlet of the bag type dust collector, a gas outlet of the bag type dust collector is communicated with agas inlet pipeline of the circulating heater, and a gas outlet of the circulating heater is communicated with a gas inlet pipeline of the bag type dust collector. According to the flue gas deacidification and dust removal system, flue gas exhausted by an incinerator is treated when the incinerator works abnormally, the situations that dew is formed on the surface of a cloth bag of the bag type dust collector, the cloth bag is pasted and corroded by acids are avoided, exhausted gas does not contain dust, and the removal efficiency of acid pollutants in the flue gas subjected to cyclic heating treatment is higher.

A closely coherent tower system for selective desulfurizing is composed of a desulfurizing system A and a non-desulfurizing system B, which serve a single sintering motion at same time. Said desulfurizing system A consists of wind gathering hopper, flue valve, flue, electric duster, exhaust blower, closely coherent tower, cloth-bag duster and boosting blower. Said non-desulfurizing system B comprises flue, electric duster and exhaust blower.

The invention discloses a low-temperature protective device of a preheater metal heat-exchange tube. A plurality of metal heat-exchange tubes are arranged in parallel among an air input collection header, an air output collection header and an air bottom connection header at intervals, and are used for communicating the air input collection header with the air bottom connection header and communicating the air bottom connection header with the air output collection header respectively; the air input collection header and the air output collection header are respectively provided with an air input interface and an air output interface; a hot air collection header is sleeved on the top of the air input collection header; the bottom of one side of the hot air collection header is provided with a hot air spout towards the plurality of metal heat-exchange tubes; the hot air interface is arranged at the top of the hot air collection header; and the air input interface of the air input collection header passes through the hot air collection header and is connected with the air input collection header. By adopting the device, acid corrosion of a low-temperature tube bank of a preheater is avoided effectively, the heat recycling efficiency of the preheater is increased, the service life of the preheater is prolonged, and the energy consumption is lowered.

The invention specifically discloses a wet bag deep dust removal system, which includes a wet dust removal system and a cleaning and alkaline regeneration system. The entry end of the bag I of the wet dust removal system is connected to the outlet end of the bag II of the cleaning and alkaline regeneration system. The sending end of the cloth bag I of the wet dust removal system is connected to the inlet end of the cloth bag of the cleaning and alkaline regeneration system, and the cloth bag I and the cloth bag II form a closed system. The beneficial effects of the present invention are: 1) It can simultaneously remove fine particles, gypsum particles, further desulfurize and other functions. 2) Compared with the dry bag, the dust removal effect of the wet bag is better, and it can deeply remove fine particles (PM2.5), which adapts to the general trend of national environmental protection. 3) An online maintenance and replacement section can be set between the cleaning tank and the alkaline regeneration tank to perform non-stop maintenance and partial bag replacement.

The invention discloses a waste heat recovery and comprehensive utilization system of an industrial furnace group. The waste heat recovery and comprehensive utilization system of the industrial furnace group comprises a heat collecting unit, a first heat exchange unit, a second heat exchange unit, a first heat supply unit and a second heat supply unit. The heat collecting units are formed by connecting multiple heat collecting subunits in parallel. Heat pipe heat exchangers in the heat collecting units are communicated with the same water collector inlet. A water collector outlet is communicated with a plate heat exchanger of the first heat exchange unit and a plate heat exchanger of the second heat exchange unit through pipelines. The plate heat exchanger of the first heat exchange unit and the plate heat exchanger of the second heat exchange unit are communicated with the same water distributor inlet, and the plate heat exchanger of the first heat exchange unit and the plate heat exchanger of the second heat exchange unit are communicated with a first heat storage tank and a second heat storage tank through circulating water pumps. The first heat storage tank is communicated with the first heat supply unit through a water pump, the second heat storage tank is communicated with a plate heat exchanger of the second heat supply unit through a circulating water pump, and the plate heat exchanger of the second heat supply unit is communicated with the second heat supply unit through a circulating water pump. According to the waste heat recovery and comprehensive utilization system of the industrial furnace group, comprehensive utilization of waste heat in the aspects of heat collecting and technology production is achieved, and recovery and utilization of the waste heat are balanced through heat storage and heat release.

The invention provides a gel electrolyte for an aqueous zinc-manganese battery and a preparation method of the gel electrolyte. The gel electrolyte at least sequentially comprises an acidic gel layer, an alkalescence gel layer and a neutral gel layer from bottom to top. When the gel electrolyte is applied to the assembly of the water-based zinc-manganese battery, the acidic gel layer is positioned at one side of a manganese dioxide positive electrode, and sufficient hydrogen ions can be provided to prevent the manganese dioxide from being dissolved; the neutral gel layer is located at one side of the zinc negative electrode, does not cause acid corrosion to the zinc negative electrode, and can effectively prevent zinc dendrite growth caused by alkalinity; and the alkalescence gel layer is positioned between the acidic gel layer and the neutral gel layer, so that hydrogen ions can be prevented from being migrated to the negative electrode from the positive electrode, and the corrosion of the zinc negative electrode is prevented. The structure and performance of the battery are stabilized, the service life of the battery is prolonged, meanwhile, the water-based zinc-manganese battery has better capacity, reversibility, flexibility and bendability, and the gel electrolyte has very good industrial application prospects in the field of new energy batteries.

The invention relates to a preparation method and application of litchi seed extract for preventing and treating prostate cancer, and belongs to the technical field of traditional Chinese medicine extracts. The present invention adopts dipping, ultrasonic, microwave, reflux extraction, extraction and other processes to fully destroy the cell wall, accelerate and increase the dissolution of active ingredients, and obtain the litchi core extract of the present invention. The extraction method has high efficiency and good quality of the extract, and can be directly Made into tablets, granules, powders, dripping pills, teas, decoctions, capsules, mixtures or syrups, etc., and added to related foods, beverages or medicines as functional additives for adjuvant therapy or treatment of prostate cancer, Thereby expanding the medicinal scope and value of litchi core.

The invention relates to a wire cutting fluid for semiconductor materials. Its composition and weight % ratio are as follows: polyethylene glycol 10-10000: 35-90, amine base: 8-30, penetrating agent: 1-5, ether alcohols Active agent: 0.5-5, chelating agent: 0.5-5, deionized water: 0-55. The advantages of the present invention are: 1. The existing neutral or acidic wire cutting fluid is improved into an alkaline wire cutting fluid having a chemical interaction with silicon, which can avoid acid corrosion of equipment and reduce wire saw wire breakage rate. 2. It effectively solves the problem of re-deposition of chips and diced powder, avoids the phenomenon of chemical bonding and adsorption on the surface of silicon wafers, and facilitates the cleaning and subsequent processing of silicon wafers. 3. The effects of penetration, lubrication and cooling are remarkable, and the surface damage, mechanical stress, thermal stress and pollution of metal ions to silicon wafers of the obtained slices are significantly reduced. 4. The cost price is low, which is beneficial to replace the imported wire cutting fluid.

The invention provides a strong-acid high-temperature resistant cationic resin catalyst and a preparation method thereof. The strong-acid high-temperature resistant cationic resin catalyst is preparedfrom styrene and divinyl benzene through suspension polymerization, and is prepared by using a preparation method of structure stabilization, halogenation, sulfonation and active group stabilizationafter suspension polymerization, wherein the water phase of the catalyst is a mixture of lauryl sulfonated succinic acid monoester disodium, lauryl alcohol phosphoric acid ester potassium and water; and the oil phase of the catalyst is a mixture of styrene, divinyl benzene and benzoyl peroxide. The catalyst prepared by using the preparation method is high in both catalysis activity and high temperature resistance, is particularly applied to a sec-butyl acetate synthesis reaction and is excellent in thermal stability, and the total conversion rate of the catalyst is up to 90% or higher.

The invention relates to a method for preparing cefepime hydrohaloride. It takes sulfate of cefepime as raw material and produce cefepime hydrohaloride with barium halide. It effectively solves the corrosive problem to producing device, reduces production cost and increases product purity.