18 results about "P-phenylphenol" patented technology

The utility model relates to the technical field of phenol wastewater treatment, in particular to a coal chemical phenol-containing wastewater treatment system which is characterized in that an inner pipe is arranged in an outer pipe, a preset distance is formed between the inner wall of the outer pipe and the outer wall of the inner pipe to form a water channel, one end of the inner pipe is a sealed end, and a water containing space is formed between the sealed end and the corresponding end of the outer pipe; the water containing space is communicated with the water channel, the other end of the inner pipe is connected with the end, away from the sealed end, of the outer pipe in a sealed mode, and the inner pipe is a ZnO (at) PDA / POMs nanocomposite inner pipe. One of the other end of the inner pipe and the water containing space is connected with an outlet of the phenol wastewater storage tank, and the other end of the inner pipe and the water containing space is connected with an inlet of the ground tank. Through the arrangement of the ZnO (at) PDA / POMs nanocomposite inner pipe, the catalytic degradation rate of the phenol wastewater is increased, meanwhile, catalytic degradation is conducted on the phenol wastewater, harm to the human body is reduced, and the service life of the phenol wastewater is prolonged. And the pollution to the atmospheric environment is reduced.

The invention discloses an N and P co-doped charcoal-silicon dioxide composite material and application thereof in adsorbing phenols in oilfield wastewater, and belongs to the technical field of environmental functional materials. The composite material comprises a biochar matrix, silicon dioxide, and an N element and a P element which are co-doped on the surface of the material and in a skeleton. Silicon dioxide serves as a framework, the high-porosity structure of the material is supported and maintained, the thermal stability of the material is improved, rich surface active sites are introduced through co-doping of N and P, and the adsorption capacity of the material to phenolic pollutants is remarkably improved through the synergistic effect of the silicon dioxide and the N and P. The adsorption capacity of the material to typical oilfield phenols such as phenol, cresol, chlorophenol, nitrophenol and the like is 150-200 mg / g, the adsorption efficiency can reach 96% or above, and the recycling performance can be good through acid and alkali heat treatment. The invention effectively solves the problems of poor adsorption effect, high material cost, insufficient stability, secondary pollution and the like in oilfield wastewater phenol treatment.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a high-phenol high-salt industrial wastewater treatment process which comprises the following steps: S1, preparing a composite extracting agent, S2, extracting phenol, S3, regenerating the extracting agent, S4, pretreating a dephenolized water phase, and S5, evaporating and desalting. Compared with the prior art, the invention has the following beneficial effects: through compounding of tributyl phosphate and kerosene, the addition of kerosene can enhance hydrophobicity by reducing viscosity, dispersing tributyl phosphate molecules and retaining tributyl phosphate at the same time, the extraction efficiency of phenol is greatly improved, the extraction efficiency is high, the maximum extraction rate of phenol is high, and the method is suitable for industrial production. The phenol extraction rate can reach 95.5% after extraction is carried out for 1.5 hours, and the maximum phenol extraction rate is stabilized at 97.2% after extraction is carried out for 2 hours.

The utility model relates to a combined device for rectifying and purifying recovered crude phenol, and belongs to the technical field of chemical production devices and rectifying and purifying. The device is formed by combining a distillation still, a rectifying tower, an evaporation inclined pipe, a condenser, a liquid separation tank, a U-shaped bent pipe, an impurity receiving tank, a front distillation receiving tank, a reflux condenser, a certified product receiving tank, a water heater, a vacuum ejector and the like. The innovation point is that the design of an evaporation inclined pipe is introduced, a liquid separation tank and a U-shaped bent pipe are arranged, and a water heater for cooling phenol steam is designed; according to the technical scheme, the combined device for rectifying and purifying the recovered phenol crude product effectively solves the problem that an evaporation pipeline is blocked due to crystallization in the rectifying and purifying process of the recovered phenol, solves the problem that a condenser is blocked by phenol crystallization in the operation process, and solves the problem that impurities are not easily brought out due to backflow; the combined device for rectifying and purifying the recovered crude phenol product disclosed by the utility model also has the characteristics of high product purity and convenience in operation.

The invention belongs to the field of wastewater treatment, and particularly relates to a method for extracting high-concentration coal chemical phenolic wastewater by adopting 5-methyl-2-hexanone. The method comprises the following steps: acidizing the high-concentration coal chemical phenolic wastewater, and then adding 5-methyl-2-hexanone into the acidized wastewater for extraction. Experimental results show that the distribution coefficients D of the MIAK to phenol, o-cresol, m-cresol and p-cresol are not lower than 74, 74, 76 and 82 respectively, the single-stage extraction rate exceeds 97%, and the total removal rate after two-stage countercurrent extraction can reach 99.9%. The method is carried out at normal temperature and normal pressure, the extracting agent can be recycled for more than 10 times through reduced pressure distillation, and the method has the advantages of simplicity and convenience in operation, low energy consumption, rapidness in phase splitting, no secondary pollution and the like. Compared with an existing phenol-containing wastewater treatment technology, efficient removal and resource recycling of high-concentration phenolic substances are achieved, and the method is suitable for deep treatment and recycling of wastewater in the coal chemical industry and other industries.

The invention relates to the technical field of photo-thermal interface evaporation and photo-thermal catalysis, in particular to a preparation method and application of a MnO2-based photo-thermal evaporator with a photo-thermal catalysis function. The preparation method comprises the following steps: S1, preparing a pretreatment carrier: S101, cleaning the carrier to remove impurities; s102, carrying out pretreatment; s2, preparing a composite MnO2 precursor solution; and S3, loading MnO2 by an impregnation method. According to the preparation method and application of the MnO2-based photo-thermal evaporator with the photo-thermal catalysis function, the problems that manganese dioxide is not firmly combined in the photo-thermal evaporator, the adsorption and capture capacity on phenol is weak, catalytic active sites are insufficient, and the degradation efficiency is low are solved.

A selective hydrogenation catalyst for phenol comprises a support and an active component loaded on the surface of the support; wherein the support is a base-modified molecular sieve; the active component comprises a primary active component and a secondary active component; the primary active component comprises palladium; and the secondary active component comprises boron and / or niobium. Using a base-modified molecular sieve as a support and loading the primary and secondary active components, the active component is fully dispersed on the support, exhibiting excellent catalytic activity for the hydrogenation of phenol to cyclohexanone. The catalytic performance is stable and has high practical value.

The invention relates to composite particles for repairing polluted water and a preparation method and application of the composite particles, and belongs to the technical field of environmental functional materials and water pollution governing. Through double chemical modification of acrylic acid grafting and glutaraldehyde crosslinking, a sodium alginate / chitosan charcoal carrier is modified into a high-strength pH-responsive intelligent carrier, and the composite particles are used for repairing the polluted water. And then the plant growth-promoting bacteria and sodium percarbonate are compounded and granulated. After being added, the carrier can effectively resist SPC initial oxidation impact, protect the activity of thalli, intelligently release PGPB along with the change of pH, accurately link and deepen the oxidative degradation process, and realize efficient and deep mineralization of pollutants. Experiments show that the microbial protection rate of the material is greater than 95%, the 72-hour phenol mineralization rate reaches 85%, and the material is remarkably superior to that of a traditional method. According to the invention, the problem of compatibility between the oxidant and microorganisms is solved, and a new technology is provided for efficient and green water body remediation.

The invention discloses preparation and stabilization methods of an INO3 solution and application of the INO3 solution. The preparation method comprises the following steps: dissolving silver nitrate in a first organic solvent to form a silver nitrate solution; dissolving an iodine elementary substance in a second organic solvent to form an iodine elementary substance solution; mixing the silver nitrate solution with an iodine simple substance solution, and carrying out a reaction according to a reaction equation AgNO3 + I2-AgI + INO3; and separating AgI precipitate generated by the reaction to obtain an INO3 solution. When a non-acetonitrile solvent is used, acetonitrile needs to be added as a stabilizer, so that the volume content of acetonitrile in the final solution is greater than or equal to 50%. The INO3 solution can be used as a bifunctional reagent for synchronous iodination and nitration reactions of aromatic compounds. The half-life period of the INO3 solution prepared by the method provided by the invention in an acetonitrile system under the dark condition of 25 DEG C reaches 48.5 days, the product stability is good, the INO3 solution has excellent activity on the bifunctionalization reaction of aromatic compounds such as phenol, and nitrophenol and iodo-phenol products can be generated at the same time.

The application discloses a synthesis method of hexa-substituted oxy-cyclotriphosphazene compounds, under nitrogen condition, crystallized hexachlorocyclotriphosphazene is dissolved in a solvent, and then is added into a solution of one or two of phenol / 4-nitrophenol / trifluoroethanol / 4-ethylphenol / 4-methoxyphenol / 4-methylthioether phenol, and then potassium trimethylsilanol is added, and reaction is carried out at 65-100 DEG C for 6-24 h; after the reaction is completed, corresponding hexa-substituted oxy-cyclotriphosphazene derivatives are obtained through post-treatment. The application selects a solvent with high safety and low toxicity and high-activity potassium trimethylsilanol to realize the synthesis of phenol and alkyl alcohol hexa-substituted oxy-cyclotriphosphazene; and through optimization of the post-treatment method, the residual phenol and salt in the reaction system can be efficiently removed, and the waste water and waste liquid generated due to post-treatment are greatly reduced.

The invention relates to a process for extracting acetic acid from an aqueous solution by using a novel ternary eutectic solvent. The extraction agent used in the process is mainly synthesized from tributyl phosphate, trioctylphosphine oxide and n-caprylic alcohol in a molar ratio of 1, 2, 3 under the condition of 353.15 K. An acetic acid aqueous solution is used as an extraction water phase, the influence of various experimental parameters such as pH, temperature and phase ratio on the phenol extraction efficiency is researched by changing the content of acetic acid in the extraction water phase, and the extraction organic phase and the water phase are fully mixed according to the volume ratio of 1: 0.2-1: 5 and then separated until a clear phase interface appears, so that the two phases are completely separated. After phase separation is finished, an organic phase rich in acetic acid and a water phase containing a small amount of acetic acid are obtained, and the highest extraction efficiency reaches 95% or above. After the extraction agent is subjected to six times of extraction-back extraction experiments, the change amplitude of the extraction efficiency of acetic acid is within 2%, and cyclic utilization of the extraction agent is realized in the economic aspect. The method for extracting acetic acid has the advantages of low energy consumption, simple process, high separation efficiency of acetic acid and water and the like, the adopted novel ternary eutectic solvent is low in price, and the preparation method is simple, non-toxic and environment-friendly.

The invention discloses separation and identification of alcaligenes faecalis IDOH3 capable of efficiently degrading indole and application of the alcaligenes faecalis IDOH3. The preservation number of the alcaligenes faecalis IDOH3 is GDMCC NO.65566. Through separation, identification and functional verification, 100 mg / L of indole can be completely degraded within 3 hours under the optimal conditions of pH 7, 37 DEG C and 200 r / min, and the degradation activity can be kept within the pH range of 3-9 and the temperature range of 10-50 DEG C. In addition, the strain IDOH3 also has degradation capability on aromatic compounds such as phenol, 2-methylindole and the like. Experiments show that the degradation rates of the strain IDOH3 on indole in sterilized and unsterilized pig manure wastewater are 99.13% and 74.59% respectively, and the strain IDOH3 is suitable for bioremediation of indole pollutants in environments such as livestock and poultry breeding wastewater.

The application provides a ZnCoFe-LDH / MnS2 photocatalyst, a preparation method and application thereof, the ZnCoFe-LDH / MnS2 photocatalyst is successfully compounded by in-situ hydrothermal synthesis method, and a new ZnCoFe-LDH / MnS2 photocatalytic nanomaterial is formed. The addition of MnS2 makes the UV-vis of ZnCoFe-LDH red shift, and the ZnCoFe-LDH / MnS2 photocatalytic nanomaterial has a wider visible light absorption range than ZnCoFe-LDH. Moreover, the introduction of MnS2 successfully realizes the separation of the photo-generated electron-hole pairs of the ZnCoFe-LDH / MnS2 photocatalytic nanomaterial at the heterojunction (ZnCoFe-LDH and MnS2), thereby avoiding the rapid in-situ recombination of the electron-hole pairs in the band gap of the single ZnCoFe-LDH catalytic nanomaterial, and being helpful to the separation of the photo-generated carriers and the reduction of the band gap. In addition, the ZnCoFe-LDH / MnS2 photocatalytic nanomaterial provided by the embodiment of the application has a degradation efficiency of phenol of up to 100% within 60 min; compared with the single ZnCoFe-LDH photocatalytic nanomaterial, the ZnCoFe-LDH / MnS2 photocatalytic nanomaterial has a wider range of visible light absorption and a higher ability to activate PMS to degrade phenol.

The application discloses a method for treating phenol tar, which comprises the following steps: performing a distillation reaction on a mixture containing phenol tar, dilution oil and a polymerization inhibitor in the presence of a solid acid catalyst, wherein the solid acid catalyst contains a solid carrier and an acid component loaded on the solid carrier. By means of the technical scheme, the phenol tar is subjected to the distillation reaction by using the solid acid catalyst, the yield of the distillation reaction product is significantly increased from 30% without adding the catalyst to more than 60%, and the solid acid catalyst is convenient to recycle and the performance of multiple uses is not obviously reduced.

The application discloses a kind of solid adsorbent and its preparation method and application.The application is dissolved in anhydrous ethanol with organic amine, 10-25 ℃ is stirred and dissolved, and forms homogeneous organic amine solution;Metal ion modified porous material is added to the organic amine solution, and is fully stirred and immersed at 10-25 ℃, and the stirring time is 5-10 h, and the solid adsorbent is obtained after filtration and drying.The solid adsorbent of the application can effectively remove organic matter in wastewater, especially the adsorption efficiency of oxygen-containing organic matter such as phenol and phenethyl alcohol is higher.The application realizes the continuous operation of wastewater treatment, so that the wastewater treatment efficiency is higher;Adsorbent can be regenerated by solvent desorption, and soaking solvent can be reused by distillation method, which avoids resource waste.

The invention discloses a graphite carbon and monatomic manganese co-modified carbon nitride catalyst, which is prepared by taking 5-amino-1H-tetrazole, manganese chloride and glucose as precursors and synchronously anchoring manganese monatomic and graphite carbon in C3N5 through a thermal polymerization method. Wherein the introduction of manganese single atoms provides a large number of ozone adsorption and activation sites, the existence of graphite carbon enhances the electron transfer ability of a reaction system, and the synergistic effect of manganese single atoms and graphite carbon accelerates the chain reaction process of converting ozone into active oxygen species, so that the catalyst shows excellent performance in ozonization of organic pollutants. Through detection, the degradation rate of the obtained catalyst to phenol within 30 min reaches 98%, the mineralization rate of the catalyst to phenol within 60 min reaches 96.9%, the activity loss is only 4.4% after 5 cycles, the loss of metal manganese ions is low (less than 0.04 mg / L), and the catalyst has the advantages of simple preparation and low raw material cost, and is suitable for efficient deep treatment of complex organic wastewater.

This invention discloses an iron-nitrogen co-doped carbon material for the adsorption and catalytic degradation of phenol, its preparation method, and its applications. The preparation method includes the following steps: using grapefruit peel as raw material, the material undergoes oxidation, pre-amidation, metal-organic framework loading, inert atmosphere calcination, and activation to obtain the iron-nitrogen co-doped carbon material. This method is economical and environmentally friendly. The prepared material has a hierarchical pore structure and a nitrogen-rich structure, with a specific surface area of ​​365.35 m² / g. The pore size matches the phenol molecule, resulting in rapid mass transfer. The iron-nitrogen co-doped carbon material can achieve a saturated adsorption capacity of 186.6 mg / g for phenol and can catalytically degrade phenol through its stable Fe-N active sites, realizing integrated "adsorption-degradation" and avoiding secondary treatment. The material has a stable structure, is resistant to acids and alkalis, and maintains a high adsorption capacity even after multiple cycles, making it suitable for the efficient treatment of phenol-containing wastewater.