113 results about "Acid substances" patented technology

The utility model relates to the technical field of water treatment equipment, in particular to a water path system for a mineral spring water purifier and the mineral spring water purifier. The waterway system for the mineral spring water purifier comprises an alkaline filter material, an acidic filter material and a mineralized waterway, wherein the alkaline filter material and the acidic filter material are sequentially arranged in the mineralized water path, or the acidic filter material and the alkaline filter material are sequentially arranged in the mineralized water path. Compared with the prior art, the alkaline filter material is matched with the acidic filter material, so that the release of mineral substances in the alkaline filter material can be promoted by using acidic substances released by the acidic filter material, or the release of the mineral substances in the acidic filter material can be promoted by using alkaline substances released by the alkaline filter material; therefore, the problem that the content of mineral substances in the water body provided by the mineral spring water purifier does not reach the standard can be solved.

The invention provides a tropical fruit preservative film which is of a double-layer structure, the outer layer is a moisture-resistant antibacterial layer, and the inner layer is a water-absorbing antifogging antibacterial layer; and the water-absorbing anti-fog antibacterial layer also comprises a pH sensitive microcapsule. The outer layer is prepared from polyhydroxyalkanoate, a humidity sensitive type block copolymer and CuO / SiO2 antibacterial nano-enzyme; and the water-absorbing anti-fog antibacterial layer comprises polyhydroxyalkanoate, a humidity-sensitive block copolymer, hygroscopic zeolite, thymol, gallic acid and a pH-sensitive microcapsule. The preservative film has a certain hydrophobic effect, the humidity of a packaging microenvironment can be adjusted, breeding of putrefying bacteria can be inhibited, meanwhile, thymol and gallic acid form a slow-release antibacterial system, and tropical fruits keep good quality in the storage and transportation links through cooperation of all the components; besides, the pH sensitive microcapsules can respond to acidic substances generated by corruption in real time, help merchants to quickly sort deteriorated fruits, and provide a visual judgment basis for consumers at the same time.

The invention discloses a cushion packaging product. The cushion packaging product is obtained by cutting or assembling plant fiber foaming materials. The preparation method of the plant fiber foaming material comprises the following steps: S1, defibering plant fibers to obtain defibered plant fibers; s2, uniformly mixing the defibered plant fibers with a plant fiber modifier to obtain modified plant fibers; the plant fiber modifier comprises calcium chloride, long-chain aliphatic anhydride and an acidic substance; and S3, uniformly mixing the modified plant fibers with an adhesive and a nucleating agent, performing extrusion molding, and feeding the extruded slurry into foaming equipment for foaming to obtain the plant fiber foaming material. The invention discloses a cushion packaging product which is a plant fiber foaming material, and the plant fiber foaming material can be continuously produced under the condition of no mold, and is high in production efficiency and low in production cost. The cushion packaging product is low in density and high in compression strength, can replace EPE, and has higher compression strength compared with the EPE under the same density.

Systems and methods for capturing and releasing carbon dioxide at least in part via the electrochemical production of acids and / or bases are generally described. An aqueous input stream that includes a dissolved salt such as sodium chloride may be input into an electrolysis assembly to produce acidic and / or basic species. The basic species may promote capture of carbon dioxide (e.g., via direct air capture or from a point source). The acidic species may promote subsequent release of the carbon dioxide to form a carbon dioxide-rich stream. In some instances, at least some streams are concentrated and / or recycled, thereby improving overall system performance and / or efficiency.

The invention discloses a composite adsorption flocculant for waste oil regeneration and a preparation method thereof, and belongs to the technical field of waste oil regeneration. The composite adsorption flocculant is prepared from the following components: 30 to 60 parts of functional modified core-shell microspheres, 6 to 18 parts of polyaluminum chloride, 0.5 to 2 parts of cationic polyacrylamide and 5 to 10 parts of sodium carbonate. According to the functionalized modified core-shell microsphere, the core is the hydroxyl-functionalized nano silicon dioxide core, and the surface of the core has a large number of hydroxyl groups derived from glycerol, which are extremely strong hydrogen bond sites; polar pollutants such as small molecular organic acids, sulfur and phosphoric acid substances in the waste oil can penetrate through the nano pore channels of the shell to reach the inner core; hydroxyl can generate multi-point and strong hydrogen bond locking with carboxyl, sulfo groups and the like of acidic substances, so that the total acid value of the waste oil is reduced, and an inner core can also react with polar functional groups containing oxygen and sulfur, so that further degradation of the waste oil is inhibited.

The application discloses an amino acid hydrolysate acid removal process using indirect MVR evaporation, and particularly relates to the technical field of amino acid hydrolysate acid removal processes, and comprises the following steps: S1, amino acid hydrolysate conveying, S2, hydrolysate evaporation under reduced pressure, S3, acid substance gas-liquid separation, S4, secondary steam conveying, and S5, liquid storage. The acid substance in the amino acid hydrolysate is evaporated and acid removal treated by adopting the MVR evaporation technology, so that the hydrolysate can form concentrated liquid and acid substance after being separated under reduced pressure, the generated acid substance is separated by a gas-liquid separator, and acid liquid and secondary steam are generated, the secondary steam can provide a secondary steam source for an evaporator after being compressed by a compressor, thereby providing a large amount of steam source for the evaporator, reducing the emission of acid gas, improving the resource utilization rate, achieving the protection of the environment, and avoiding the harm of acid gas to the human body.

The invention relates to a heat preservation container and a manufacturing method thereof.The heat preservation container comprises a non-metal container body, a metal sealing component and a first connecting solder layer, the non-metal container body comprises a shell and an inner container, the top ends of the shell and the inner container are fixedly connected in a sealed mode, and a vacuumizing opening is formed in the end face of the bottom end of the shell; the metal sealing component is of a hollow structure with one end open and the other end closed in the circumferential direction, and the open end of the metal sealing component is an annular embedding end which is matched with the vacuumizing opening in shape and can be inserted into the vacuumizing opening in a clearance fit mode. The first connecting solder layer is arranged between the outer wall of the annular embedded end and the inner wall of the vacuumizing opening, and the non-metal device body and the metal sealing component are connected through the first connecting solder layer. According to the heat preservation container, the shell and the inner container are integrally formed and manufactured through the non-metal materials which are not prone to being corroded by acidic substances, the problems that the metal materials are prone to being corroded by the acidic substances and the surface layers are prone to being scratched in the cleaning process are solved, and the heat preservation container can store the acidic substances while improving the heat preservation and cold preservation effects.

The application discloses an electrolyte, a preparation method thereof and a lithium ion battery, and belongs to the technical field of batteries.The electrolyte comprises a lithium salt, a first additive, a second additive and a solvent; the first additive is a compound carrying an isocyanate substituent and a nitrile substituent in a molecular structure; and the second additive is a sulfur-containing heterocyclic compound.The first additive of the electrolyte can remove water and HF in the electrolyte, prevents HF from attacking CEI and causing transition metal dissolution of a ternary positive electrode material and destruction of a material structure; the nitrile substituent has extremely strong complexing force with transition metals, inhibits electrolyte oxidative decomposition and positive electrode transition metal element dissolution; the second additive has the advantages of impedance reduction and gas production inhibition but is prone to generating acidic substances; the first additive has water and acid removal functions and can inhibit the second additive from generating acidic substances; and the synergistic effect of the two additives can improve the compatibility of the electrolyte and the ternary positive electrode material and improve the electrochemical performance of the lithium ion battery.

The application discloses a production process of an ultra-low pressure reverse osmosis membrane, which comprises the following steps: preparing a support layer casting solution; uniformly coating the support layer casting solution on a polyester non-woven fabric, and then performing air drying and water washing; preparing a water phase casting solution and an oil phase casting solution, and adding an acidic substance in the water phase casting solution and the oil phase casting solution; the acidic substance is insoluble in water and only reacts with alkali, the reaction product is soluble in water, and the particle diameter of the acidic substance is 1-5 um; coating the water phase casting solution and the oil phase casting solution on the non-woven fabric with the support layer respectively, and then sequentially performing drying, acid washing, water washing, alkali washing, water washing and drying to obtain the ultra-low pressure reverse osmosis membrane. The application can provide a reverse osmosis membrane which has a stable structure, a relatively high desalination rate and a relatively large water flux.

The utility model relates to the technical field of molybdenum disulfide washing devices, in particular to a molybdenum disulfide washing device which comprises a liquid outlet pipe, a liquid outlet is formed in the lower portion of the outer wall of the liquid outlet pipe in a penetrating mode, an ultrasonic vibration plate is fixedly connected to the lower end of the inner wall of a cabinet body, and U-shaped fixing blocks are fixedly connected to the inner walls of the left end and the right end of the cabinet body. A T-shaped block is movably arranged at the groove of the U-shaped fixing block, the lower end of the T-shaped block is fixedly connected with an adsorption plate, and third groove bodies are formed in the upper end and the lower end of the adsorption plate in a penetrating mode. When a water source is injected into molybdenum disulfide through the liquid outlet in the liquid outlet pipe, the ultrasonic vibration plate is started, the molybdenum disulfide in the cabinet body is subjected to ultrasonic vibration work, ultrasonic vibration can strengthen solid-liquid collision, acidic substances and impurities on the surface of the molybdenum disulfide are promoted to fall off from the surfaces of particles and are dispersed into a water solution, and therefore the molybdenum disulfide is purified. Then the aqueous solution penetrates through the filter plate and flows into the upper end of the filter plate, and then impurities in the solution are adsorbed by using an adsorption plate, so that the deacidification work of molybdenum disulfide is realized.

The application discloses an electro-catalytic oxidation system and method and an ecological joint treatment method for in-situ remediation of water body sediments, which utilizes an intelligent pulse power controller to perform intermittent pulse electro-catalytic oxidation on the bottom mud at the water bottom, generates hydroxyl radicals through in-situ catalysis of an anode to degrade organic pollutants of the bottom mud, generates micro-bubbles in the interstices of the bottom mud through the electrolysis of water to improve the oxidation-reduction potential, and further reserves time for the soluble pollutants in the interstitial water of the bottom mud to sufficiently diffuse to the surface of the electrode, so as to avoid energy waste caused by concentration polarization. Through reverse power supply, the polarity of the anode and the cathode is instantaneously reversed, trace amounts of acidic substances and gas generated through in-situ electrolysis are utilized to strip off the calcium and magnesium scale attached to the surface of the cathode, and manual cleaning and maintenance under water are realized. In combination with the planting of submerged plants on the treated bottom mud, ecological joint treatment is realized, the root system of the submerged plants is utilized to perform long-term ecological fixation and water purification on the treated sediments.

To provide a kit for obtaining a foaming topical skin preparation that improves skin condition and has a pleasant feel. [Solution] The present invention provides a kit for obtaining a foaming topical skin preparation, which is obtained by mixing an acidic substance, a carbon dioxide generating substance that reacts with the acidic substance to generate carbon dioxide, a thickener, and water, and is characterized by the incorporation of two or more thickeners in combination.

The invention discloses an anti-oxidation acid-absorbing EVA photovoltaic film and a preparation method thereof.The anti-oxidation acid-absorbing EVA photovoltaic film comprises an EVA photovoltaic film body, the EVA photovoltaic film body comprises an anti-oxidation film, an acid-absorbing film, a photovoltaic base film and a color-stabilizing film, and the anti-oxidation film comprises 30-45 parts of nano zinc oxide dispersion liquid, 20-35 parts of nano silicon dioxide and 20-40 parts of an SF-based film; the acid-absorbing film comprises 25-35 parts of a polypropylene film, 25-35 parts of an alkaline metal compound, 25-35 parts of a modified acid-absorbing agent and 10-30 parts of nano magnesium oxide, and the photovoltaic base film comprises 50-70 parts of an ethylene-vinyl acetate copolymer, 20-35 parts of a modified polyurethane elastomer, 10-15 parts of a silane coupling agent, 0-5 parts of a peroxide cross-linking agent and 0-5 parts of a water vapor blocking agent. By arranging the acid absorbing film, the polypropylene film, the alkaline metal compound and the modified acid absorbing agent, acidic substances released after degradation after aging are subjected to a neutralization reaction, and the situation that the service life of equipment at the installation position is affected due to acidic corrosion is avoided.

The invention discloses a quantitative calculation method for the comprehensive utilization rate of acid in a crude fatty acid preparation process, and belongs to the technical field of quantitative calculation of the comprehensive utilization rate of acid, and the quantitative calculation method comprises the following steps: measuring the prepared crude fatty acid and the acid value of a raw material nigre used for preparation, and calculating the amount of substance of acid consumed by acidification reaction after corresponding data is obtained; measuring the acidity of the strong acid in the total process effluent, and calculating the amount of residual acid substance in the total process effluent after corresponding data is obtained; calculating the amount of substance of the acid for neutralizing the excessive monobasic base in the saponification reaction according to the amount of substance of the added acid and the calculated data; and finally calculating the acid comprehensive utilization rate. According to the method, the acid utilization path is analyzed through the technological process, relevant parameters are measured, the quantitative method is constructed, quantitative calculation of the comprehensive utilization rate of the acid is achieved, the method is simple, convenient and easy to operate and achieve, raw material consumption and salinity and acidity in waste water can be remarkably reduced, and the method has great significance in improving the product yield and reducing environmental pollution.

The present application relates to a kind of high alkalinity wastewater pre-acidification treatment method and its processing device system, the treatment method includes: the nutrient substance is added to the wastewater to be treated and is adjusted to obtain adjusted water;Part of the adjusted water is returned to adjust and handle, another part is added to the nutrient substance and is pre-acidification treatment, obtain pre-acidification water;Pre-acidification water is treated by anaerobic purification, obtain anaerobic purification water;Anaerobic purification water is treated by aeration and sedimentation in turn, obtain treated water.The treatment method and its processing device system provided by the present application can regulate the metabolic activity of microorganism, reduce the inhibitory effect of wastewater alkalinity and metal ions on anaerobic microorganism, improve the anaerobic removal rate of anaerobic purification treatment, reduce the adding cost of acidic substance and nutrient substance.

This application relates to the field of food processing technology, specifically disclosing a freeze-resistant lava-filled popping bead, its preparation method, and its application. The freeze-resistant lava-filled popping bead comprises an inner core liquid, a popping bead wall material liquid, a curing liquid, and a storage liquid. The inner core liquid comprises the following raw materials in parts by weight: 80-120 parts white sugar, 3-6 parts calcium salt, 30-60 parts edible alcohol, and 41-68 parts water. The preparation method is as follows: white sugar, calcium salt, edible alcohol, and water are mixed until dissolved to obtain the inner core liquid; alginate, glycerin, pectin, and acidic substances are mixed with water until dissolved to obtain the popping bead wall material liquid; calcium salt, chitosan, and water are mixed evenly to obtain the curing liquid; fructose syrup, edible alcohol, and water are mixed evenly to obtain the storage liquid; the inner core liquid is added dropwise to the popping bead wall material liquid for a coating reaction; excess adhesive is filtered out and washed away; the bead is then placed in the curing liquid and the storage liquid in sequence; after packaging and high-temperature sterilization, the finished product is obtained. It has the advantage of bursting and lava-filled core when eaten frozen.

The application discloses a combustion-supporting and corrosion-preventing type colloidal magnesium-based heavy oil additive and a preparation method thereof. The heavy oil additive is prepared from the following components in parts by weight: magnesium oxide 50-80 parts, bentonite 10-15 parts, lime powder 5-10 parts, nano silicon dioxide 10-15 parts, basic copper chloride 5-10 parts, diaspore powder 10-15 parts, sodium dodecyl benzene sulfonate 2-8 parts, hydrocarbon solvent 2-8 parts, combustion-supporting dispersant 2-8 parts, and water 80-100 parts. The additive can inhibit the combustion of sulfur in the heavy oil to generate sulfur oxides, low-temperature sulfur corrosion and the synergistic corrosion of HCl. In the low-temperature section, the basic components such as lime powder react with HCl to generate salt compounds, neutralize the acidic substances in the flue gas, and significantly increase the pH value to above 8, thereby preventing the low-temperature dew point corrosion of the tail heating surface.

This invention discloses a method for preparing a tamarind polysaccharide-based phytate amine biochemical flame retardant hybrid flame retardant for rubber and plastics. Through molecular design, it fully utilizes the complementary advantages of biomass polysaccharides and phosphorus and nitrogen materials. Under heating conditions, it mediates the reaction between phytate amine and tamarind polysaccharide in an aqueous system. The active phosphate groups in phytate amine undergo esterification with the hydroxyl groups of polysaccharide, firmly grafting phytate amine onto the polysaccharide backbone through chemical bonds. A stable network structure is formed through multiple intermolecular hydrogen bonds, constructing a hybrid flame retardant system that integrates acid source, carbon source, and gas source functions. This flame retardant fully utilizes the ability of phytate amine to decompose and release acidic substances to catalyze char formation and generate non-combustible gases. Combined with the efficient dehydration and carbonization characteristics of tamarind polysaccharide, it can form a dense expanded char layer when heated, effectively isolating heat transfer and gas exchange, and significantly improving the thermal stability of the material.

The present application relates to a kind of organic amine neutralizer for atmospheric and vacuum unit and its application, belong to neutralizer technical field.The neutralizer of the present application is compounded by multiple organic amines, and the main component is ethylene amine and ethanol amine.Directly according to formula, single-component organic amine is added to compound, it can also be prepared by two-step combination of first synthesis and then compounding, the latter can reduce cost, with higher economic benefit.The organic amine neutralizer of the present application is applied to refinery atmospheric and vacuum unit fractionating column top volatile line corrosion prevention, can replace conventional ammonia water.It has the following advantages: suitable for tower top volatile line environment in distillation range;easily soluble in water at dew point temperature, not corrosive in dew point area;with low melting point, good water solubility, no ammonium salt scale, not accumulated, not blocked;stable pH, easy to control;safe and environmentally friendly;good corrosion inhibition effect;excellent performance, high cost performance, etc.

The electrolyte comprises a functional additive A. The functional additive A contains an imidazole ring, a cyano group, an isocyanate group and the like and can be subjected to a reduction reaction on the surface of a negative electrode prior to an organic solvent to form a compact and stable solid electrolyte interface film (SEI) rich in organic and inorganic nitrogen components, and the solid electrolyte interface film can be applied to a lithium ion battery. Volume expansion and side reaction of the negative electrode at high temperature are effectively inhibited, and a negative electrode interface is protected; moreover, electron-rich groups in molecules of the functional additive A can efficiently capture trace water in the electrolyte and acidic substances generated by electrolyte salt decomposition, so that the acidity increase and chain decomposition of an electrolyte system are inhibited from the source, the high-temperature stability of an electrolyte body is improved, and the service life of the electrolyte is prolonged. Therefore, the electrolyte provided by the embodiment of the invention is suitable for a high-nickel and high-silicon battery system, and has excellent high-temperature cycle life and storage performance.

The invention discloses a wet deacidification process and device for fumed silica, and belongs to the technical field of deacidification. The middle lower end of the tank body is connected with a deacidification assembly; the deacidification assembly comprises an air inlet assembly, a material bearing assembly and a material discharging assembly, the air inlet assembly is fixedly connected with the tank body, the material bearing assembly is installed at the air outlet end of the air inlet assembly, the material discharging assembly is in attached sliding connection with a transverse hole formed in the bottom of the material bearing assembly, and the material discharging assembly is fixedly connected with the tank body; the middle lower end of the tank body is further connected with a feeding assembly, and the discharging end of the feeding assembly is movably connected with the material bearing assembly; a top cover is fixedly connected to the top of the tank body; a filtering assembly is fixedly connected to the top in the top cover. According to the method disclosed by the invention, the gas-phase white carbon black is in contact with water vapor, the water vapor penetrates through internal channels of the gas-phase white carbon black nanoparticles to carry out acidic substances on the surfaces of the gas-phase white carbon black nanoparticles, so that the acidic substances on the surfaces are removed, the deacidification process can be completed in a relatively short time through wet and hot air deacidification, and man-made impurities in a product are reduced.

The invention discloses an EGR valve, an engine and a vehicle, and belongs to the technical field of vehicles. The EGR valve comprises a valve body, and a waste gas channel is formed in the valve body. The protective layer is at least attached to a part of the inner wall of the waste gas channel, and the protective layer is made of a material which is not easy to react with acidic substances.

The invention provides a preparation process of a low-temperature foaming agent, which comprises the following steps: firstly, weighing a certain mass of urea and an acid substance for reaction, adding the weighed acid substance into water, and stirring uniformly to obtain the low-temperature foaming agent, wherein the acid substance is a compound capable of releasing hydrogen ions in an aqueous solution or releasing protons in a heating and melting state, and the acid substance is a compound capable of releasing hydrogen ions in the aqueous solution or releasing protons in a heating and melting state; the mass fraction of the acid substances is 30%-70%, and the reaction temperature is controlled to be 20-80 DEG C; starting a stirrer, directly adding urea in a solid form into the aqueous solution of the acid substance under the stirring condition, and stirring for 1-2 hours; compared with the prior art, through cooperation of the driving assembly and the filtering assembly, filtering is conducted alternately through a plurality of conical cylinders, the conical cylinders can be prevented from being blocked and overflowing, filter residues in the conical cylinders can be screened and sent out, unified collection is facilitated, and the filtrate is sent into a drying frame to be dried; and the overall preparation efficiency is improved.

The invention discloses a method for simultaneously removing ash content, reducing an acid value and reducing total precipitation of marine oily pollutants, and belongs to the technical field of waste oil recycling. The invention aims to solve the problems that the process of treating oily pollutants of ships in the prior art is complicated, and various impurities cannot be efficiently removed at the same time. The preparation method comprises the following steps: heating a ship oily pollutant raw material to 75-85 DEG C, adding a composite treatment agent which accounts for 5% of the mass of the ship oily pollutant raw material and is formed by compounding a polyoxypropylene polyoxyethylene ether block copolymer, triethanolamine, diethylenetriamine and solvent oil, and reacting at constant temperature for 1-2 hours; adding water accounting for 5% of the mass of the raw materials, and continuing constant-temperature reaction for 1-2 hours; and finally, heating the mixture to 90-95 DEG C, and carrying out centrifugal separation to obtain the qualified marine fuel oil. Through the one-agent multi-effect and integrated process, the process is simple, ash, acidic substances and total precipitates in the raw materials can be efficiently and synergistically removed, the product quality meets the national standard requirement, and the method has remarkable economic and environment-friendly benefits.

The present invention discloses a preparation process and application of a slow-release carbon source. The preparation process comprises: selecting raw materials, including fruit waste, baking soda, and other waste, wherein the fruit waste is acidic and the other waste includes waste paper, dead branches and leaves, and agricultural waste, and the ratio of the fruit waste to baking soda is not less than 20%; crushing and drying the raw materials separately, and controlling the moisture content of the fruit waste to be 10% to 15%; mixing and granulating the crushed and dried raw materials in a granulator to obtain granules with a porous structure, wherein the porous structure is formed by the reaction of acidic substances in the fruit waste with baking soda to release CO2; drying the granules, and controlling the moisture content to be 2% to 5%, to obtain the slow-release carbon source. The obtained slow-release carbon source can be used as a carrier to replace traditional fillers / filter materials, while also continuously providing a carbon source for denitrification, significantly reducing sewage treatment costs.

The invention provides a liquid moisture absorbent as well as a preparation method and application thereof, and belongs to the technical field of dehumidifiers. The liquid hygroscopic agent provided by the invention has good hygroscopicity and relatively low viscosity. Specifically, the polydimethylsiloxane affects the viscosity of the liquid moisture absorbent, the viscosity of the polydimethylsiloxane is reduced along with the reduction of the molecular weight, and the viscosity of the liquid moisture absorbent is regulated and controlled by controlling the molecular weight of the polydimethylsiloxane. According to the invention, the moisture absorbent has extremely strong alkalinity, and can react with acidic substances in water to form hydroxides, so that the moisture absorption function is realized; the defoaming agent can reduce and prevent liquid from generating foam. According to the invention, the leveling agent can reduce the surface tension of liquid and improve the leveling property and uniformity of the liquid.

The invention relates to the technical field of baijiu production, in particular to a production method of alkalescent baijiu and a low-pressure water separation method. The pervaporation medicinal liquor comprises base liquor, a composite adsorbent, a pervaporation membrane auxiliary agent and an antioxidant, the method further comprises the steps of raw material selection, base wine preparation, a low-pressure water separation method, natural alkalescence treatment and low-temperature synergistic aging. The low-pressure water separation method of low-pressure gradient adsorption, low-pressure pervaporation, low-temperature negative-pressure degassing and low-pressure circulating aging has the synergistic effect of efficiently separating impurities and retaining flavor substances in a low-pressure environment, so that the problems of flavor substance volatilization loss and unstable quality caused by traditional high-temperature distillation are avoided; according to the method, the defects of low production efficiency and high energy consumption are overcome, the directional removal capability of acidic substances and the water separation efficiency are improved through the cooperation of a multi-stage low-pressure process, and the stability of weakly alkaline characteristics of the liquor body is improved, so that the comprehensive quality of the weakly alkaline liquor is improved.

The invention discloses a method for adjusting the putting amount of a soil acidification conditioner, and belongs to the technical field of facility agriculture, and the method comprises the following steps: obtaining a strong acidification layer and a transition layer; obtaining the initial putting amount of the soil acidification conditioner and putting the soil acidification conditioner; the adjusted putting amount of the soil acidification conditioner put into the strongly acidified layer is adjusted in real time; after a soil conditioning period, turning over the conditioned strong acidification layer and the conditioned transition layer; obtaining the standard soil acidification conditioner feeding amount of the next conditioning period; obtaining a strong acidification layer and a transition layer of the next conditioning period; obtaining the acidic material concentration of the transition layer in the next conditioning period; and adjusting the feeding amount of the soil conditioner of the strongly acidified layer in the next conditioning period in real time, so that the acidic substance concentration of the strongly acidified layer in the next conditioning period is the same as that of the transition layer. The problem that in the prior art, the feeding amount of the soil acidification conditioner is reasonable and poor in precision is solved, and therefore the conditioning effect and efficiency of the acidified soil are improved.

The invention belongs to the technical field of regenerated rubber, and discloses desulfurized regenerated rubber with low acid waste gas emission and a preparation method thereof.The preparation method comprises the steps that waste rubber powder and a softening agent are mixed and stirred in a stirring machine, the temperature is increased to 100-150 DEG C within 1-3 min, after uniform mixing is conducted, the mixture enters a double-screw extruder through a continuous closed heat preservation conveying device to be subjected to a desulfurization reaction, and the desulfurized regenerated rubber with low acid waste gas emission is obtained; sodium bicarbonate and calcium oxide are added into the double-screw extruder through a side feeding device, the reaction condition is 200-350 DEG C, and after the reaction is carried out for 1-3 min, the desulfurized rubber is obtained through cooling. According to the present invention, the acid-base neutralization principle is utilized to directionally capture the acidic material generated by the reaction, such that the wear of the desulfurization equipment is effectively retarded, and the carbon dioxide generated by the reaction can effectively isolate the participation of oxygen so as to avoid the performance reduction caused by the oxidation of the rubber.

The utility model discloses a device for cleaning abietic acid in a pipeline in the technical field of waste gas treatment equipment, and aims to solve the problem of abietic acid cleaning residues in the pipeline in the prior art. The cleaning device comprises an air pipe, a cleaning liquid box, a sodium hydroxide medicine box, an air pump and a liquid pump, a liquid spraying pipe is installed in the air pipe, a plurality of first spraying heads are installed on the liquid spraying pipe, the liquid spraying pipe is communicated with the cleaning liquid box through a liquid supply pipe, and the liquid pump is used for supplying cleaning liquid in the cleaning liquid box to the liquid spraying pipe through the liquid supply pipe; and a communicating pipe is further arranged at the bottom of the air pipe and communicates with the cleaning liquid box, and a medicine supply device is arranged on the sodium hydroxide medicine box and used for supplying a sodium hydroxide solution to the interior of the cleaning liquid box. The device is suitable for removing abietic acid substances in the air duct, the spraying direction of a sodium hydroxide solution can be flexibly adjusted according to use requirements, the configuration mode is flexible and simple, the abietic acid substances located at spraying dead angles in the air duct can be removed easily, and the cleaning effect on the air duct is improved.