4464 results about "Ammonium" patented technology

The invention relates to the technical field of drilling fluids, and discloses a lignite-based modified filtrate reducer for a drilling fluid and a preparation method of the lignite-based modified filtrate reducer. The lignite-based modified filtrate reducer for the drilling fluid is obtained by stirring and mixing the lignite grafted copolymer, the hydroxy propyl cellulose and the graphene oxide, drying and crushing. The steric effect generated by an oxazine ring, a pyridine ring, a triazine ring, a benzene ring and a pyrrole ring grafted into the lignite improves the temperature resistance and salt resistance of the filtrate reducer; the dispersing capacity of clay particles in a drilling fluid system is improved through sulfonic acid hydrated groups, and high-temperature coalescence of drilling fluid clay due to the high-temperature effect is avoided; a sulfonic acid anion group and a quaternary ammonium salt cation group are introduced into the filtrate reducer at the same time, so that the filtrate reducer can form a salt internal bond under the action of electrostatic force, and the salt resistance of the filtrate reducer is improved; the nano silicon dioxide increases the rigidity of the filtrate reducer, so that the filtrate reducer is not easy to curl under the conditions of high temperature and high salt.

A fire retarding biochemical liquid composition including: a dispersing agent realized in the form of a major amount of water, for dispersing alkali metal ions dissolved in the water; a major amount of a first fire retarding agent realized in the form of a first alkali metal salt of a nonpolymeric saturated carboxylic acid, specifically, tripotassium citrate, for providing metal potassium ions dispersed in the water when the at least one alkali metal salt is dissolved in the water to form a mixed retardant solution; a minor amount of a second fire retarding agent realized in the form of a second alkali metal salt of a nonpolymeric saturated carboxylic acid, specifically, sodium benzoate (SB), for providing metal sodium ions dispersed in the water when the at least one alkali metal salt is dissolved in the mixed retardant solution, for functioning as a secondary fire retardant agent and also inhibiting surface corrosion reactions involving metals contacting the mixed retardant solution, including specific metals, namely 2024-T3 Aluminum, 4130 Steel, Yellow Brass, and Az31B Magnesium; a minor amount of thickening agent in the form of a biomolecular polymer consisting of polysaccharides, for increasing the viscosity of the mixed retardant liquid during application operations; a minor amount of coloring agent in the form of fugitive color dye powder, or non-fugitive pigment powder, for imparting a visible color (e.g. red or green) when the fire retarding biochemical liquid composition is applied to a surface to be protected against fire, as water molecules in the retardant liquid coating evaporate to the environment during drying, to form a thin fire retardant coating deposited on the treated surfaces having a characteristic visible color, and comprising potassium and sodium salt crystals mixed within the polysaccharides of the biomolecular polymer. Wet and dry concentration formulations of the fire retarding biochemical liquid composition are disclosed for use with both serial and ground delivery methods and apparatus.

The invention provides a method for preparing low-chromium low-potassium vanadium oxide by using a sodium vanadium solution, which comprises the following steps: S1) adjusting the pH value of the sodium vanadium solution to 10.5-11.0, and reacting with a chromium removal agent to obtain initial chromium removal slurry; s2) adjusting the pH value of the initial chromium removal slurry to 9.0-9.5, reacting with a silicon removal agent, and carrying out solid-liquid separation to obtain a filtrate; s3) reacting the filtrate with hydrogen peroxide, adding ammonium salt, precipitating vanadium, and performing solid-liquid separation to obtain ammonium metavanadate and primary vanadium precipitation wastewater; s4) adjusting the pH value of the primary vanadium precipitation wastewater to 6-7, reacting with ferrous sulfate, adding a complexing agent, mixing with the sodium vanadium solution, precipitating, and performing solid-liquid separation to obtain ammonium polyvanadate; and oxidizing and calcining the ammonium metavanadate to obtain the low-chromium low-potassium vanadium oxide. According to the method provided by the invention, the low-chromium and low-potassium vanadium oxide is prepared from the sodium vanadium solution, meanwhile, ammonium salt and vanadium in the primary vanadium precipitation wastewater are recycled, and the comprehensive production cost of the vanadium oxide is reduced.

The invention relates to the technical field of wood corrosion prevention and corrosion resistance treatment, in particular to a preparation process of a coating for improving the antibacterial and corrosion-resistant performance of wood. In order to improve the antibacterial and corrosion-resistant capabilities of the prepared coating, a corrosion-resistant antibacterial agent is prepared and added into the raw materials of the coating, and quaternary ammonium salt, guanidyl and other group structures are introduced into the corrosion-resistant antibacterial agent, so that the antibacterial performance on microorganisms such as fungi is realized; the introduction of fluorine can effectively improve the hydrophobicity of a coating of the paint and reduce the influence of water vapor on antibacterial components in the coating, and the introduction of allyl can enable the corrosion-resistant antibacterial agent to react with butyl acrylate and other raw materials under the action of an initiator to achieve the cross-linking ability, so that the loss of the corrosion-resistant antibacterial agent is effectively avoided, and the service life of the coating is prolonged. The antibacterial activity is kept for a long time.

The invention provides a degradable environment-friendly packaging material and a preparation process thereof, and belongs to the technical field of packaging materials. The preparation method comprises the following steps: preparing the modified nano montmorillonite; preparing a composite antibacterial additive; preparing a barrier additive; and preparing the degradable environment-friendly packaging material. The preparation method comprises the following steps: by taking methacrylic acid (2-dimethylaminoethyl) ester and acrylic acid as raw materials, modifying nano-montmorillonite under the initiation of benzoyl peroxide, performing quaternary ammonium salinization, and performing in-situ synthesis of nano-zinc oxide on the surface of the quaternary ammonium salinized montmorillonite through a hydrothermal reaction to prepare the composite antibacterial additive. When the composite antibacterial additive is added into polylactic acid to prepare a packaging material, the growth of various microorganisms such as bacteria and fungi can be effectively inhibited, the packaging material is endowed with strong antibacterial protection capability, and the composite antibacterial additive has a more lasting antibacterial effect so as to prolong the antibacterial validity period of the packaging material.

The invention provides a supported catalyst as well as a preparation method and application thereof. The preparation method of the supported catalyst comprises the following steps: S1, carrying out precipitation reaction on vanadate and first ammonium salt in a first solvent to obtain a first product system containing a carrier precursor; s2, enabling the carrier precursor, a second ammonium salt, a noble metal-containing compound, a chelating agent and a first reducing agent to react in a second solvent to obtain a second product system containing a catalyst precursor; and S3, carrying out annealing treatment on the catalyst precursor and a second reducing agent in protective gas to obtain the supported catalyst. The noble metal in the supported catalyst prepared by the method is not easy to migrate and aggregate, and the stability is better. In addition, the dosage of precious metal needed by the preparation method is smaller, and the atom utilization rate is higher.

The invention relates to the technical field of cationic etherifying agents, and discloses a quaternary ammonium salt type cationic etherifying agent and a preparation method thereof.3-chloro-2-hydroxypropyl trimethyl ammonium chloride and sulfaguanidine modified quaternized chitosan are added into a reactor and stirred, and the quaternary ammonium salt type cationic etherifying agent is obtained. Quaternary ammonium salt, guanidyl and chitosan groups contained in the sulfaguanidine modified quaternized chitosan all have better antibacterial effects; wherein the quaternary ammonium salt is adsorbed to the surfaces of bacteria, and hydrophobic groups are inserted into lipoid layers, so that the permeability of cell membranes is changed, the membrane structure is destroyed, intracellular substances are leaked, and the bacteria are dead; guanidyl can be combined with protein and nucleic acid in bacterial cells to interfere the normal metabolic process of bacteria and further inhibit growth and reproduction of the bacteria, so that a natural antibacterial effect is achieved; and the chitosan group has a relatively good antibacterial effect.

The invention belongs to the field of electroplating, and particularly relates to a platinum electroplating solution, a preparation method thereof and application of the platinum electroplating solution in wafer electroplating. The platinum electroplating solution comprises the following components: a platinum salt which is 0.02 mol / L in terms of platinum (II); the platinum salt is ethylenediamine platinum chloride (II) or ethylenediamine platinum iodide (II); the concentration of the complexing agent is 0.16 to 0.46 mol / L; the complex is a linear molecule with amino groups at two ends or 1, 2-diaminocyclohexane; the carbon number n between two amino groups of a linear molecule with amino groups at two ends is selected from 2, 3 and 4; the concentration of the electrolytic salt is 0.13-0.53 mol / L, and the electrolytic salt comprises carboxylic acid ammonium salt or ammonium sulfate salt; the pH regulator is used for regulating the pH of the platinum electroplating solution to 7; the solvent is ultrapure water. The platinum plating layer formed by the method has excellent morphology, uniform distribution, high purity and excellent compactness, and the produced wafer electronic product has excellent corrosion resistance, high-precision conductivity and high-quality electronic signal transmission performance.

The invention belongs to the technical field of oilfield chemistry, and discloses a cross-linking agent for degradable gel and a preparation method and application thereof.The preparation method comprises the steps that a compound A is dissolved in an organic solvent and stirred to be uniform, and a first solution is obtained; adding a polymerization inhibitor and a compound B into the first solution, and uniformly stirring at room temperature to obtain a second solution; the second solution is sequentially subjected to heating stirring, diethyl ether washing, ethanol recrystallization, suction filtration and drying, and the cross-linking agent for gel is obtained. According to the invention, a non-conjugated aromatic system is added into a cross-linking agent structure, so that the prepared gel can be automatically degraded under a certain temperature condition; ammonium ions and halide ions are added into a cross-linking agent structure, so that the anti-pollution performance of the gel is enhanced, and the problems that existing gel is difficult to degrade and poor in anti-pollution performance are solved.

The invention relates to the technical field of petrochemical engineering, and discloses a temperature-resistant anti-swelling agent for fracturing and a preparation process thereof.The preparation method comprises the steps that glycerol triglycidyl ether and diethanol amine are subjected to a ring-opening reaction, a polyhydroxy tertiary amine monomer is obtained, then the polyhydroxy tertiary amine monomer and chloromethylated polystyrene are subjected to a quaternization reaction, and the temperature-resistant anti-swelling agent for fracturing is obtained. Quaternary ammonium salt groups of the anti-swelling agent and negative charges on the surface of clay form electrostatic interaction, and hydroxyl groups and the surface of the clay form hydrogen-bond interaction, so that the anti-swelling agent can be firmly adsorbed on the surface of the clay to form a layer of polymer film, the clay is prevented from being in contact with water, the phenomenon that the clay swells when encountering water is effectively inhibited, and the anti-swelling rate is very high. And the anti-swelling agent contains a heat-resistant polystyrene molecular chain, has excellent high temperature resistance, can maintain good structural stability at high temperature, still maintains high anti-swelling rate, and is suitable for a fracturing fluid system for high-temperature oil reservoir exploitation.

Disclosed is a composition including ammonia and curcumin or curcuminoid, such as an ammonium phenoxide of curcumin. Also disclosed is a method for forming an ammonium phenoxide of curcumin or curcuminoid including dissolving the curcumin or curcuminoid in an ammonia solution. Further disclosed is a method of treating a curcumin-improvable condition including administering an ammonium phenoxide of curcumin or curcuminoid to a subject.

The invention belongs to the technical field of waste resource recycling, and discloses a preparation method and application of a solid acid catalyst for degrading waste PET to prepare TPA, and the solid acid catalyst for degrading waste PET to prepare TPA is a heteropolyacid asymmetric biquaternary ammonium salt solid acid catalyst with a phase transfer function. The preparation method comprises the following steps: carrying out an ion exchange reaction on an asymmetric biquaternary ammonium salt surfactant and heteropoly acid according to a molar ratio of (0.5-1.5): 1 to prepare the solid acid catalyst for degrading waste PET to prepare TPA; the application of the solid acid catalyst comprises the following steps: adding the waste PET, the solid acid catalyst and distilled water into a polytetrafluoroethylene or para-polyphenyl lining of a self-pressure-generating reaction kettle according to a certain mass ratio, and reacting at 180-220 DEG C for 4-24 hours by using a homogeneous reactor. The preparation method disclosed by the invention is simple and convenient in process, and the prepared solid acid catalyst has excellent catalytic degradation performance, can be recycled for multiple times, and is environment-friendly and resource-saving.

The invention provides a polymer, a cross-linked anion exchange membrane and a preparation method and application thereof. According to the polymer and the cross-linked anion exchange membrane, aryl compounds, trifluoroketone compounds and N-methylpiperidone are polymerized to form a main chain, the main chain has excellent rigidity and flexibility, a quaternary ammonium salt alkenyl compound is introduced as a cross-linking agent, cross-linking is completed through heating in the membrane forming process, and the cross-linked anion exchange membrane is prepared. The quaternary ammonium salt side chain introduced into the side chain has excellent hydrophilic and hydrophobic phase separation characteristics. The polymer and the cross-linked anion exchange membrane have excellent oxidation-reduction resistance and alkali resistance, have the characteristics of stable physical and chemical properties, excellent ion flux, excellent mechanical properties (the elongation at break is greater than 60%) and simple process, and can be widely applied to the fields of hydrogen production by water electrolysis and the like.

The invention provides a method for preparing vanadium pentoxide from iron-containing ammonium metavanadate, which comprises the following steps: S1) mixing iron-containing ammonium metavanadate with water to obtain ammonium metavanadate slurry; s2) mixing the ammonium metavanadate slurry with a complexing agent, adjusting the pH value to 1.5-2.5, carrying out iron dissolving reaction, and carrying out solid-liquid separation to obtain ammonium polyvanadate; 3, ammonium polyvanadate is calcined, and vanadium pentoxide is obtained.According to the method for preparing vanadium pentoxide from iron-containing ammonium metavanadate, the technical thought of acid dissolution-complexing iron removal is provided, the content of iron in vanadium pentoxide is effectively reduced, the process is simple, and the process cost is low.

The invention relates to an SSZ-39 molecular sieve and preparation and application thereof.The preparation method comprises the following steps that 1, after water, an alkali source and a template agent are mixed, mesoporous Y zeolite and a silicon source are added, the mixture is stirred to be uniform, and the mixture is aged to be in a white gel shape; (2) transferring the obtained white gel into a reaction kettle, carrying out crystallization treatment, and filtering, washing, drying and calcining a crystallized product to obtain a Na-SSZ-39 molecular sieve; (3) carrying out ammonium ion exchange on the Na-SSZ-39 molecular sieve, filtering, washing, drying and calcining to obtain an H-SSZ-39 molecular sieve; and (4) carrying out copper ion exchange on the H-SSZ-39 molecular sieve, filtering, washing, drying and calcining to obtain the Cu-SSZ-39 catalyst. Aluminum used in the method is provided by mesoporous Y zeolite, the pure-phase SSZ-39 molecular sieve can be synthesized in a wide gel range, the crystallization time is shortened to 24 h, and after copper ion exchange, the pure-phase SSZ-39 molecular sieve shows high denitration activity in the selective catalytic reduction reaction of nitrogen oxide ammonia.

The invention relates to the technical field of molybdenum metallurgy, and particularly discloses a crystal preparation method of ammonium heptamolybdate, which comprises the following steps: taking low-grade molybdenite, crushing, ball-milling, and calcining to obtain molybdenum calcine. And dispersing the molybdenum calcine with a sodium hydroxide solution, and filtering to obtain a leaching solution. And then adding a compound chelating agent into the leachate, carrying out adsorption and desorption treatment to obtain a sodium molybdate solution, then adjusting the pH value, carrying out ammonia leaching, and then carrying out cooling crystallization to obtain ammonium heptamolybdate. By adopting the prepared compound chelating agent, the purity of ammonium heptamolybdate prepared by taking low-grade molybdenite as a raw material can be improved, and after desorption treatment, separated precipitates can be used as the compound chelating agent again for adsorbing molybdate radicals, so that the aim of cyclic utilization is achieved.

The invention discloses a resourceful treatment method for wastewater containing magnesium and manganese ammonium sulfate, and belongs to the technical field of wastewater resourceful treatment. The method comprises the following steps: neutralizing the ammonium sulfate wastewater containing magnesium and manganese to remove heavy substances, deeply removing calcium from the neutralized and precipitated filtrate by adopting oxalic acid and a crystal inducer through crystallization, leaching the calcium-removed and precipitated filter residue by adopting sulfuric acid, recycling the leachate which is an oxalic acid solution, and removing manganese from the calcium-removed and precipitated filtrate through catalytic oxidation and decomposing residual oxalic acid to obtain manganese residues and catalytic oxidation filtrate; according to the method, the magnesium-manganese-containing ammonium sulfate wastewater can be subjected to resourceful treatment to obtain the magnesium ammonium sulfate product and the ammonium sulfate product with relatively high additional value, and the problems of difficulty in impurity removal, low cost and the like in the existing magnesium-manganese-containing ammonium sulfate wastewater treatment process are solved. The purity of by-products is low, and the like.

The invention relates to the technical field of wastewater treatment, and discloses a preparation method of an activated carbon-containing adsorption material and application of the activated carbon-containing adsorption material in wastewater treatment.The preparation method comprises the steps that modified phenolic resin, activated carbon and sulfo chitosan are added into a double-screw extruder, and melt extrusion is performed to obtain the activated carbon-containing adsorption material; the phenolic resin is high in phenolic hydroxyl content and strong in hydrophilicity, has a good adsorption effect on chromium ions, lead ions and other heavy metal ions in wastewater, and has good adsorption energy on the heavy metal ions due to the coordination and hydrogen-bond interaction of amido in the phenolic resin, and flocculation is achieved through synergism; a sulfonic acid group and chromium ions, lead ions and other heavy metal ions in the wastewater are subjected to a complexation reaction to form tiny flocs, the tiny flocs and quaternary ammonium salt groups are electrically neutralized to form precipitates, the heavy metal ions are effectively removed, and the flocculation effect is achieved; meanwhile, chitosan is a natural antibacterial agent, and forms an antibacterial system with a quaternary ammonium salt group and a sulfonic acid group to achieve a synergistic antibacterial effect.

The invention relates to a preparation method and application of high-temperature-resistant organic modified bentonite. According to the method, three organic modifiers of long-chain quaternary ammonium salt, amide and a silane coupling agent are compounded to modify bentonite, and the problem that a single modifier is easy to decompose at high temperature is solved through the synergistic effect of physical intercalation, chemical crosslinking and interface bonding; and secondly, a three-dimensional stable structure is constructed by adding nano silicon dioxide and a composite modifier, so that the high temperature resistance and dispersion stability of the modified bentonite are further enhanced. According to the invention, the requirements of deep well and ultra-deep well drilling fluids on the temperature resistance and rheological property of the treating agent can be met, and the ultra-deep well drilling fluid which can tolerate the high temperature of 250-300 DEG C, and is low in filter loss and good in dispersion stability can be obtained.

The invention relates to a method for preparing high-quality ammonium sulfate by using sodium-ammonium-containing sulfate solid waste, which comprises the following steps: partially dissolving the sodium-ammonium-containing sulfate solid waste and carrying out solid-liquid separation to obtain a first dissolved solution and a first solid phase; the first dissolving solution is subjected to first evaporative crystallization and solid-liquid separation, and an ammonium sulfate product and a first mother solution are obtained; wherein the temperature of partial dissolution is 5-10 DEG C; efficient separation and recovery of ammonium sulfate and sodium sulfate resources in sulfate solid waste containing sodium and ammonium are achieved, the purity of an ammonium sulfate product obtained after first evaporative crystallization is preferably as high as 98.6% or above, the appearance color is white, the water content is preferably as low as 1.3% or below, and the recovery rate is high. The recovery rate is preferably up to 98.00% or above, the purity of the sodium sulfate product is up to 98.5% or above, the amount of sodium hydroxide required to be consumed is as low as 0.93% or below, and the method is simple in technological process, mild in condition and easy to industrialize.

The invention discloses a coating as well as a preparation method and application thereof and a coated product. According to the coating provided by the invention, the curing modification of the epoxy resin coating is realized by adjusting the components of the curing agent: a primary amine group contained in the curing agent reacts with an epoxy group to generate secondary amine and hydroxyl, and nitrogen atoms can improve the heat-resistant stability of a cross-linked network; a phenolic hydroxyl group reacts with an epoxy group to generate an ether bond and a hydroxyl group, and the ether bond can improve the overall flexibility of an epoxy resin coating; the anhydride group reacts with the epoxy group to generate various anhydride epoxy intermediates, so that the overall heat resistance of the epoxy resin is improved; the introduction of the ammonium salt can reduce the curing temperature of the epoxy resin, and the introduction of the metal ions can improve the anti-rust performance of the epoxy coating. Finally, the curing agent is used for curing the epoxy resin, so that the corrosion resistance, the adhesive property and the high-temperature resistance of the coating can be remarkably improved, and the application requirements in extremely severe environments such as high humidity and heat, acid-base corrosion and the like can be met.

The invention discloses a method and a system for identifying a spectrogram of a quaternary ammonium salt extracting solution in a textile, and relates to the technical field of material detection. Comprising the following steps: collecting different textile samples without quaternary ammonium salts and samples containing quaternary ammonium salts with different concentrations, determining extraction conditions, and extracting the quaternary ammonium salts to prepare a sample extracting solution; raman spectrums of all sample extracting solutions are collected, the spectrum containing the quaternary ammonium salt sample and the spectrum not containing the sample are divided into a plurality of sub-waveband areas, feature data are extracted, and the similarity is calculated. Based on the similarity change of the samples with different concentrations, defining the weight coefficient of the sub-band region; and performing similarity calculation on the spectrum of the to-be-detected textile extracting solution, and judging whether the to-be-detected textile extracting solution contains quaternary ammonium salt. And if not, further detecting by using Fourier transform infrared spectroscopy, and determining the quaternary ammonium salt concentration of the to-be-detected textile through the quaternary ammonium salt concentration prediction model. The calculation resources are reduced, and the detection precision and efficiency of the quaternary ammonium salt are improved.

The invention discloses a molecular sieve BUCT-10 with a novel topological structure and a unique X-ray powder diffraction characteristic, the molecular sieve BUCT-10 has a one-dimensional ten-membered ring straight pore channel, and can be synthesized in an aluminum phosphate (AlPO), silicoaluminophosphate (SAPO), metal aluminum phosphate (MeAPO) and metal silicoaluminophosphate (MeSAPO) system by taking an alkyl (C1-C5) quaternary ammonium or amine compound as a template agent, and after the template agent is removed through high-temperature calcination, the molecular sieve BUCT-10 can be prepared into the molecular sieve BUCT-10 with the novel topological structure and the unique X-ray powder diffraction characteristic. The structure is stable, and the material can be used as a catalyst, a catalyst carrier or an adsorption separation material.

Disclosed is a composition including ammonia and curcumin or curcuminoid, such as an ammonium phenoxide of curcumin. Also disclosed is a method for forming an ammonium phenoxide of curcumin or curcuminoid including dissolving the curcumin or curcuminoid in an ammonia solution. Further disclosed is a method of treating a curcumin-improvable condition including administering an ammonium phenoxide of curcumin or curcuminoid to a subject.

The invention discloses a BOE waste liquid treatment method and device. The method comprises the following steps: replacing hydrogen fluoride in BOE waste liquid with sulfuric acid, evaporating, fractionating and recovering hydrofluoric acid, neutralizing evaporated residual liquid with ammonia to obtain a fluorine-containing ammonium sulfate solution, defluorinating with fluorgypsum slurry to obtain a low-fluorine ammonium sulfate solution, and concentrating and crystallizing to obtain an ammonium sulfate product. The BOE waste liquid is treated by adopting the scheme, the bottleneck of the market capacity of ammonium bifluoride is avoided, the hydrofluoric acid product and the ammonium sulfate product with huge market capacity are produced, the value orientation of turning waste into wealth, circular economy and environmental protection is really realized, and the method is suitable for industrial popularization and application.

The invention relates to pseudo-boehmite and a preparation method thereof, and belongs to the technical field of porous alumina preparation. The method comprises the following steps: carrying out neutralization reaction on aluminum sulfate and an alkali source to obtain pseudo-boehmite colloidal particle slurry; aging the pseudo-boehmite colloidal particle slurry to obtain aged slurry with a set pH value; carrying out solid-liquid separation on the aged slurry to obtain a solid-phase substance; and washing the solid-phase substance for multiple times by using an alkaline solution containing ammonium ions so as to remove sulfate radicals carried by the solid-phase substance, thereby obtaining the pseudo-boehmite. Through the synergistic effect of the aging slurry with the set pH value and the alkaline solution containing ammonium ions, the content of sulfate radicals in the pseudo-boehmite is specifically reduced.

The invention relates to a phosphorus-free zinc-free seawater special-purpose scale and corrosion inhibitor, which comprises, by weight, 20-25% of sulfonic acid modified polyaspartic acid, 8-12% of quaternized chitosan, 5-10% of a sulfonate copolymer, 5-10% of polyepoxysuccinic acid, 1-3% of benzotriazole or methyl benzotriazole, 0.5-1% of sodium tungstate, and the balance of deionized water. According to the formula, traditional corrosion inhibitors such as phosphorus and zinc are completely abandoned, functions are achieved through natural polymer derivatives such as sulfonic acid modified polyaspartic acid and quaternized chitosan, and the scale and corrosion inhibitor has the following environmental protection advantages that the scale and corrosion inhibitor does not contain phosphorus and zinc elements at all, and water eutrophication and heavy metal accumulation caused by a traditional phosphorus and zinc formula are avoided.

The invention belongs to the technical field of preparation of blocking removers, and particularly relates to a composite chelating blocking remover for an oil field and a preparation method of the composite chelating blocking remover. The composite chelating blocking remover for the oil field is prepared from the following raw materials in percentage by mass: 7 to 9 percent of 1-butyl-3-methylimidazole dodecyl sulfonate, 5 to 7 percent of erucamide propyl hydroxypropyl sulfobetaine, 3 to 4 percent of di-(2-ethylhexyl) sodium sulfosuccinate, 4 to 5 percent of ethylenediamine di-o-hydroxyphenylacetic acid, 5 to 7 percent of N, N '-di (2-hydroxybenzyl) ethylenediamine-N, N'-bis (2-hydroxybenzyl)-N, N '-bis (2-ethylhexyl)-N, N'-bis (2-hydroxybenzyl)-N, N '-bis (2-hydroxybenzyl)-N, N'-bis (2-hydroxyphenyl)-N, N '-bis (2-hydroxyphenyl)-N, N'-bis (2-hydroxyphenyl)-N The cleaning agent is prepared from the following components in percentage by weight: 3 to 4 percent of N, N '-diacetic acid, 2 to 3 percent of O-(3-(benzyloxy) propyl) hydroxylamine, 1 to 2 percent of heptadecenyl hydroxyethyl imidazoline quaternary ammonium salt, 1 to 1.5 percent of dimethyl diallyl ammonium chloride homopolymer and the balance of water. The composite chelating blocking remover for the oil field has excellent scale dissolution rate and paraffin inhibition rate when being applied to complex scale blocking removal of the oil field.

The invention discloses a BOE waste liquid resource reutilization method, which comprises: 1, converting silicon ions in a BOE waste liquid into SiO2 precipitate, removing the SiO2 precipitate, and converting fluorine ions in the BOE waste liquid into NH4F; 2, fluorine ions in the filtrate obtained in the step 1 are converted into CaF2, and ammonium ions in the filtrate obtained in the step 1 are converted into ammonia water; 3, ammonia gas in the filtrate obtained in the step 2 escapes, CaF2 is separated after the filtrate is cooled, the separated CaF2 is used for producing HF, and the HF is used for preparing BOE for recycling; 4, directly feeding the filtrate obtained in the step 3 to sewage treatment; 5, the ammonia gas obtained in the step 3 is used for silicon removal and BOE preparation in the step 1 for recycling. According to the method, high-purity CaF2 can be obtained with high yield, NH4 < + > in BOE can be recycled, and the whole process is high in resource utilization rate and high in fluorine ion recovery rate.

The invention discloses a preparation method and application of an ammonium ion pre-embedded Cu-MOF derived CuHCF / MXene electrode material, and relates to the technical field of new energy nanometer materials. According to the preparation method, Cu-BTC is taken as a sacrificial template, ammonium ion pre-embedding and flaky MXene compounding are carried out, and synthesis is carried out under the condition of coprecipitation at room temperature. The preparation method provided by the invention is low in cost and simple in process, and the obtained electrode material is excellent in morphology and performance. When the prepared CuHCF / MXene composite electrode is applied to capacitive deionization, the characteristic of high NH4 < + > adsorption capacity is shown. According to the preparation method, hydrogen-bond interaction is formed between H atoms in NH4 < + > and N atoms in CuHCF, so that the NH4 < + > adsorption potential energy is reduced, the adsorption capacity is improved, and meanwhile, the defects that CuHCF is prone to agglomeration, poor in conductivity and the like are overcome through self-assembly of the CuHCF and MXene.