547 results about "Naphthalene" patented technology

The invention discloses sulfate-erosion-resistant metakaolin-slag-based geopolymer concrete, belongs to the technical field of concrete, and aims to solve the problems that the corrosion resistance of traditional silicate concrete is ineffective and the adaptability of conventional alkali-activated concrete is insufficient in a special environment. The concrete comprises the following components in parts by weight: 60-90 parts of a cementing material, 120-170 parts of aggregate, 15-30 parts of a composite activator, 2-8 parts of a function regulator and the like, the cementing material is prepared from nano TiO2 / KH-550 composite modified metakaolin, slag and silica fume-coal gangue powder-HAP composite powder; the aggregate comprises modified limestone macadam (soaked and dried by a sodium dihydrogen phosphate solution) and river sand; the composite exciting agent comprises water glass, sodium hydroxide, sodium pyrophosphate, propylene glycol and the like; the function regulator comprises superfine fly ash, a naphthalene water reducer, HPMC (Hydroxy Propyl Methyl Cellulose) and boric acid. Through the synergistic effect of the components, the sulfate corrosion resistance, the mechanical property and the environmental adaptation performance of the concrete are improved, and the concrete is suitable for engineering construction under the service environment of high-concentration sulfate and the like.

The invention discloses a strong acid and alkali resistant plastic material for fume hood surface decoration and a preparation method of the strong acid and alkali resistant plastic material, belongs to the technical field of plastic material processing, and aims at solving the technical problem that in the prior art, the acid and alkali resistance and the bending modulus of a plastic material for fume hood surface decoration need to be further improved. The preparation method specifically comprises the following steps: stirring amino-modified fluorosilicone resin, paraformaldehyde and 1, 4-dioxane in a reaction kettle, dropwise adding an anacardol solution, heating the reaction kettle to 85-95 DEG C, carrying out heat preservation reaction for 6-8 hours, and carrying out post-treatment to obtain the anacardol-based benzoxazine resin. Perfluoro-modified polysiloxane benzoxazine is prepared, naphthalene-containing epoxy resin and imidazole-modified silicon carbide microspheres are compounded, in-situ catalysis synergistic curing is carried out by using filler interface imidazole, a compact organic-inorganic hybrid interpenetrating network is constructed, and the strong acid and alkali corrosion resistance and bending modulus of the material are remarkably improved.

The invention provides a preparation method of an alpha-difluoroselenomethyl ketone derivative, which is a method for preparing the alpha-difluoroselenomethyl ketone derivative by using 2, 2-difluoroolefin and dialkyl diselenide in the presence of iodosobenzene diacetate. The preparation method specifically comprises the following steps: dissolving 2, 2-difluoroolefin and a dialkyl diselenide compound in an organic solvent, uniformly mixing, adding iodobenzene diacetate, and stirring and reacting at a certain temperature in an air atmosphere to obtain the product alpha-difluoro (seleno) methyl ketone derivative. The alpha-difluoroselenomethyl ketone derivative can be mildly and efficiently obtained by only adopting iodobenzene diacetate without necessary catalysts, alkali, persulfide and persulfate compounds in the prior art. Wherein R1 and R2 are aliphatic hydrocarbon, substituted and unsubstituted benzene, substituted and unsubstituted naphthalene or other aromatic groups.

The invention discloses a molecular assembly method of a D-A type blending system, which comprises the following steps: by taking indolo [3, 2-B] carbazole as an electron donor (D) and N, N '-bis (4-pyridyl)-1, 4, 5, 8-naphthalene tetraformyl diimide as an electron acceptor (A), dispersing the electron donor (D) and the electron acceptor (A) in an organic solvent, heating, and carrying out ultrasonic treatment to dissolve the electron donor (D) and the electron acceptor (A) to obtain clear and transparent D-A type blending system assembly liquid; vertically inserting a cleaned conductive substrate into the D-A type blending system assembly liquid, soaking for a period of time, lifting the conductive substrate at a constant speed by using a lifting instrument until the conductive substrate is completely separated from the liquid level, horizontally placing, and naturally volatilizing the solvent until the conductive substrate is completely dried to obtain a completely assembled D-A type assembly film; the invention also provides an application of the D-A type assembled film as multi-system information storage. The micromolecule blending assembly system provided by the invention can realize an ultrahigh-density information storage function.

The invention discloses a novel fused heterocyclic compound and application thereof, and an organic electroluminescent device comprising the compound, relates to the technical field of organic electroluminescence, and provides a high-efficiency and long-life green light-emitting material based on a boron-nitrogen skeleton and application of the high-efficiency and long-life green light-emitting material. The compound is designed on the basis of a single-spiro structure material FBN (CAS: 3018116-98-5), a benzene ring on a carbazole unit connected with a spiro ring is replaced with a naphthalene, quinoline or fused ring structure, and substituent groups can be introduced into other fragments for modification. According to the design, the luminous nuclear rigidity is improved, non-radiative vibration is inhibited, the spectrum is narrowed, and the color purity and efficiency are improved; the single-spiro structure is beneficial to control of molecular weight and enhancement of evaporation stability; the HOMO / LUMO delocalization range is expanded by molecular conjugation enhancement, the stability is improved, and the service life of the device is prolonged.

The present application relates to the chemical technology field, specifically to a kind of β-naphthalenesulfonic acid sodium formaldehyde condensate and preparation method thereof, the preparation method is prepared naphthalenesulfonic acid mixture with naphthalene and sulfuric acid as raw material, β-naphthalenesulfonic acid in naphthalenesulfonic acid mixture is extracted by melt crystallization, β-naphthalenesulfonic acid is sequentially subjected to condensation reaction, neutralization reaction and purification step, and β-naphthalenesulfonic acid sodium formaldehyde condensate is obtained.The present application extracts β-naphthalenesulfonic acid from naphthalenesulfonic acid mixture by melt crystallization method, which has high purity and high yield, and avoids removing α-naphthalenesulfonic acid by hydrolysis reaction and recycling the generated naphthalene, without using lime for impurity removal, thereby avoiding the introduction of calcium and magnesium ions and other impurities.The operation steps of the present application for preparing β-naphthalenesulfonic acid sodium formaldehyde condensate are simpler than traditional methods, and the product quality and economy of β-naphthalenesulfonic acid sodium formaldehyde condensate are improved.

The application discloses a multifunctional biological imbibition agent and a preparation method and application thereof. The preparation method of the multifunctional biological imbibition agent comprises the following steps: (S1), alkylization reaction to obtain alkyl naphthalene; (S2), chloromethylation reaction to obtain halomethyl alkyl naphthalene; (S3), halogen alkyl nucleophilic substitution reaction to obtain hydroxymethyl alkyl naphthalene; and (S4), esterification reaction to obtain the multifunctional biological imbibition agent. The application further discloses application of the multifunctional biological imbibition agent as an imbibition agent in shale oil reservoir oil extraction. The application has the following advantages: (1) the reservoir adsorption amount is small, but the good wetting reversal characteristic is still maintained, and the emulsification is weak; (2) the high-temperature resistance is strong, and the temperature resistance reaches above 200 DEG C; (3) the preparation process is simple, and the yield is high; (4) the dosage is small, the cost is low, and the economic benefit is remarkable.

The invention provides a method for separating 2-methyl-6-propionyl naphthalene through melt crystallization, which comprises the following steps: reacting 2-methylnaphthalene with propionic anhydride under the action of a catalyst to obtain a 2-methyl-propionyl naphthalene mixture; the 2-methyl-propionyl naphthalene mixture is distilled, and a 2-methyl-propionyl naphthalene crude product is obtained; and carrying out melt crystallization on the 2-methyl-acyl naphthalene crude product to obtain the 2-methyl-6-propionyl naphthalene. According to the method for separating the 2-methyl-6-propionyl naphthalene through melt crystallization, after the crude product of the 2-methyl-6-propionyl naphthalene is obtained through distillation and purification, the high-purity 2-methyl-6-propionyl naphthalene can be obtained through a melt crystallization one-step method. The method has the advantages of simple process operation, high separation efficiency, low energy consumption, high product purity and the like.

The invention discloses an aromatic hydrocarbon transalkylation catalyst as well as a preparation method and application thereof. The catalyst comprises: a) alumina; b) an amorphous aid; c) an active metal component; d) a molecular sieve; wherein the amorphous auxiliary agent is loaded on the surface of the aluminum oxide. The catalyst is used for an aromatic hydrocarbon transalkylation reaction, and has the characteristics of strong naphthalene-based substance resistance and good stability.

The application discloses application of a naphthalene nitrile derivative in preparation of an antitumor pharmaceutical composition, in particular, application of a 2-(imino)-naphthalene nitrile derivative in preparation of an antitumor pharmaceutical composition. The 2-(imino)-naphthalene nitrile derivative provided by the application has a significant inhibiting effect on colon cancer, liver cancer, lung cancer, prostate cancer, cervical cancer, neuroglioma and breast cancer, exhibits excellent antitumor characteristics, can be used as a leading drug molecule for resisting tumors, and has a good development and application prospect in development of antitumor drugs.

The present application belongs to the technical field of biological oil catalytic hydrogenation, and particularly relates to a bio-based oil-soluble molybdenum catalyst, a preparation method and application thereof. The preparation method of the bio-based oil-soluble molybdenum catalyst provided by the present application comprises: mixing a molybdenum source, a bio-based linear organic acid with a carbon atom number of 16 or more and an additive, heating and reacting, and separating to obtain the bio-based oil-soluble molybdenum catalyst; the additive is selected from at least one of tetrahydro naphthalene and decahydro naphthalene. The bio-based oil-soluble molybdenum catalyst green material obtained by the present application has optimal activity and high dispersibility when used, can realize more sufficient mixing with raw materials, forms nano high-dispersed molybdenum sulfide through sulfuration, and realizes high-efficiency hydrogenation refining of oil products through the joint action of hydrogen and sulfur, while reducing the sulfur, oxygen and metal residues in the product oil.

The invention relates to a high-moisture-resistance scratch-resistant protective film base film for a polaroid. The base film comprises a functional laminating layer, a protective film layer and a protective film layer from bottom to top, wherein the functional laminating layer comprises intercalation modified montmorillonite, graphene nanosheets, an antistatic agent and optical-grade PET (Polyethylene Terephthalate); the surface wear-resistant layer comprises wear-resistant modified PET (Polyethylene Terephthalate), functional nano filler, an ultraviolet absorbent and optical-grade PET. The functional fitting layer is in contact with a polarizer pressure-sensitive adhesive, the moisture resistance of the film is improved by combining original intercalation modified montmorillonite with a graphene nanosheet, long-acting protection is provided for a polarizer core layer, and meanwhile, an antistatic agent is introduced to ensure that no electrostatic discharge damage risk exists when the protective film is stripped; the wear-resistant layer on the outer surface improves the hardness and scratch resistance of the film through the synergistic effect of modified PET containing silicon and naphthalene ring structures and functional nanofiller; and the middle bonding layer effectively solves the problem of compatibility between the functional bonding layer and the outer surface layer, so that the stability and firmness of the multi-layer co-extrusion structure are ensured.

The present application relates to photosensitive polyimide oligomer, preparation method and polyimide photosensitive resin composition prepared by the same, the present application provides the molecular formula of photosensitive polyimide oligomer, which is prepared from 1, 4, 5, 8-naphthalene tetracarboxylic anhydride, N, N-dimethylacetamide, triethylamine, tetramethyl benzene dimethyl diisocyanate, hydroquinone methyl ether, dibutyl tin dilaurate and hydroxyethyl acrylate according to the molar ratio of 2.5:10-15:1.2-1.6:3.0:0.0035-0.0045:0.007-0.01:2-2.5.The good solubility group is introduced into the molecular structure, so that it has good solubility in active diluent, and the polyimide oligomer can be photocured reaction;The device printed by the polyimide photosensitive resin composition prepared by the same has small shrinkage, high precision, and has the excellent performance of photosensitive polyimide oligomer, and has certain toughness and excellent weather resistance.

The application discloses a synthesis method of afugan, which comprises the following steps: 1-[3-chloro-5-(trifluoromethyl)phenyl]-2,2,2-trifluoroacetone and 4-acetylnaphthalene carboxylic acid are added into a solvent, a base is added, DMAP is added after complete reaction at 50-80 DEG C, acetic anhydride is added dropwise, tetrabutylammonium bromide is added after complete reaction, and an aqueous solution of sodium hydroxide and hydroxylamine hydrochloride is added, and reaction is carried out at 0-5 DEG C, so that an intermediate is obtained; the intermediate is reacted with acyl chloride under the action of DMF and dichloromethane, so that 4-(5-(3-chloro-5-(trifluoromethyl)phenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazole-3-yl)-1-naphthalene carboxylic chloride is prepared; 2-amino-N-(2,2,2-trifluoroethyl)acetamide hydrochloride and a dichloromethane solution of a base are added dropwise, and reaction is carried out at 0-5 DEG C, so that afugan is obtained. The method has a short route, high yield and suitability for large-scale industrial production.

A method for preparing a polyolefin adhesive sheet with low dielectric constant and low dielectric loss, the method comprising the following steps: soaking a porous polytetrafluoroethylene film in a sodium-naphthalene-tetrahydrofuran solution, rinsing and air-drying to obtain an activated porous polytetrafluoroethylene film; adding a silane coupling agent to ethanol to form a silane coupling agent ethanol solution, immersing the porous polytetrafluoroethylene film in the silane coupling agent ethanol solution, and drying to obtain a porous polytetrafluoroethylene film with double bonds bonded to the surface; immersing inorganic fillers in the silane coupling agent ethanol solution, and drying to obtain inorganic fillers with double bonds bonded to the surface; stirring polyolefin, inorganic fillers, a flame retardant, an antioxidant, and an initiator to form a polyolefin composite glue solution; immersing the porous polytetrafluoroethylene film with double bonds bonded to the surface in the polyolefin composite glue solution, and drying to obtain a polyolefin adhesive sheet, which has the advantages of low dielectric constant, low dielectric loss, low water absorption, and the like.

The application discloses a 5-position linked naphthalene diisocyanate, a halogenated naphthylamine or a phenolic hydroxyl naphthylamine, which is subjected to an acylation reaction, then subjected to an Ullmann coupling reaction in the presence of a ligand and an inorganic base and under the protection of an inert gas by using a metal or a salt thereof as a catalyst, subjected to amide hydrolysis, and then subjected to a carbonacylation reaction with a carbonacylation reagent to obtain the 5-position linked naphthalene diisocyanate. The application further provides a synthesis method of the 5-position linked naphthalene diisocyanate. The application further provides an application of the 5-position linked naphthalene diisocyanate in preparation of urethane rubber and elastomer, urethane fiber, cast urethane rubber, urethane emulsion and paint, urethane adhesive, shock-absorbing foam material, energy-absorbing foam material and damping foam material. The polylinked naphthalene urethane prepared by using the 5-position linked naphthalene diisocyanate has high cohesive energy and impact modulus, and can be widely applied to high dynamic load and heat-resistant occasions.

This invention provides a gas-phase molecular absorption spectrometry-naphthylethylenediamine hydrochloride spectrophotometric method for determining total nitrogen in waste gas from stationary pollution sources. The method comprises the following steps: S1. Reacting the waste gas with an oxidant; S2. Using an absorbent, further reacting the waste gas after S1; S3. Collecting the oxidant after S1, pretreating it to reduce nitrogen-containing compounds to nitric oxide, and detecting the total nitrogen content I; S4. Collecting the absorbent after S2 to obtain the total nitrogen content II; S5. Summing the total nitrogen content I and total nitrogen content II to obtain the total nitrogen content in the current waste gas. This method enables accurate determination of total nitrogen in waste gas from stationary pollution sources.

The invention belongs to the field of medicinal chemistry, and relates to an indole allylamine amide derivative as well as a preparation method and application thereof. Functional activity screening of G protein dependent signaling pathways is carried out on all the synthesized compounds, and it is found that the new derivatives can be used for preparing beta2-adrenergic receptor allosteric antagonism regulator drugs. Trans-indole allylamine is used as a raw material, amide coupling is performed to obtain the novel indole allylamine amide derivative, and R1 is any one of phenyl, m-methylbenzene, m-methoxyphenyl, m-bromophenyl, m-chlorphenyl, m-fluorophenyl, o-methoxyphenyl, p-methoxyphenyl, naphthalene ring, oxazole, cyclohexyl, cyclopentyl, methyl, ethyl and isopropyl. A biological activity test result shows that the indole allylamine amide derivative disclosed by the invention has relatively good antagonistic activity on beta2AR and can be used for carrying out negative allosteric regulation on the functional activity of isoproterenol.

The present disclosure provides an organic conductor having excellent moisture resistance, and an electrolytic capacitor using the same. The organic conductor contains a conjugated polymer and a dopant. The dopant contains: a disulfonaphthalic acid compound having a naphthalene ring, two sulfo groups bonded to the naphthalene ring, and two carboxy groups, or an acid anhydride group thereof, bonded to the naphthalene ring; or an acid anhydride of the disulfonaphthalic acid compound.

The utility model relates to a concrete water reducing agent production raw material adding device which comprises a heating tank, a feeding pipe arranged on the heating tank, a driving assembly arranged on the heating tank, an auxiliary heating assembly arranged on the outer side of the heating tank, a heat supply mechanism arranged in the heating tank and a discharging pipe arranged at the lower end of the heating tank. A rotatable stirring barrel is vertically arranged in the heating tank, a plurality of stirring rods are fixed to the outer side of the stirring barrel, the heat supply mechanism comprises a stirring barrel and an inner barrel, the stirring barrel and the inner barrel are concentrically matched in a sleeved and inserted mode, a heat conduction oil cavity of an annular structure is formed between the stirring barrel and the inner barrel in a spaced mode, and a circle of oil guide baffle is fixed to the circumferential outer wall of the inner barrel in a surrounding mode; the outer side ends of the oil guide baffles and the inner wall of the stirring barrel are fixed together, two stirring shafts are symmetrically fixed to the upper end and the lower end of the stirring barrel, the stirring shafts are hollow, and the length of a circle of oil guide baffles is equal to that of the inner barrel. According to the concrete water reducer production raw material adding device, by arranging the heat supply mechanism, when industrial naphthalene in the heating tank needs to be heated, the heating tank can be uniformly heated from inside to outside through the heat supply mechanism, and the heating time of the industrial naphthalene is shortened.

The invention provides a methylnaphthalene alkylation catalyst as well as a preparation method and application thereof. The methylnaphthalene alkylation catalyst is obtained by carrying out variable-pressure hydrothermal aging and acid pickling on an HMCM-22 molecular sieve; the external specific surface area of the methylnaphthalene alkylation catalyst is 100-140 m < 2 > / g, and the mesoporous volume is 0.8-1.5 cm < 3 > / g; the strong acid center at the temperature of 370-485 DEG C accounts for 80-90% of the weak acid center at the temperature of 200-350 DEG C; the total acid amount is 0.5 to 1.9 [mu] mol / NH3. The methylnaphthalene alkylation catalyst has good stability on the premise of ensuring high activity, is used for catalyzing alkylation of 2-methylnaphthalene and methanol to prepare 2, 6-dimethylnaphthalene, and has good selectivity on DMN and 2, 6-DMN.

This invention relates to the field of alkylnaphthalene preparation and discloses a method for producing long-chain alkylnaphthalene. The method includes: an alkylation reaction, regeneration of the deactivated catalyst, and recycling of the regenerated catalyst. The alkylation reaction includes: alkylation of a long-chain olefin and naphthalene in the presence of a catalyst and a first solvent. The catalyst includes a molecular sieve, a support, copper, and phosphorus. The catalyst contains at least 35% medium-strong acid, and the acid content is characterized using NH3-TPD (NH3-programmed temperature desorption), where 250℃-450℃ represents a medium-strong acid. The regeneration of the deactivated catalyst includes: sequentially performing a first-stage solvent regeneration, a second-stage hydrogen regeneration, and a third-stage solvent hydrogen regeneration. This method enables complete regeneration of the deactivated catalyst, improves catalyst stability, and achieves long-cycle production of long-chain alkylnaphthalene.

The utility model discloses a coke oven production byproduct recovery device, including the furnace column, the top fixed mounting of furnace column has the gas collecting pipe, the inside fixed mounting of gas collecting pipe has the second spraying mechanism, the bottom fixed mounting of gas collecting pipe has the first aperture pipeline, the top fixed mounting of gas collecting pipe has the II type pipe, the one end fixed mounting of II type pipe away from gas collecting pipe has the air suction pipe. The utility model discloses through first spraying mechanism, second spraying mechanism and third spraying mechanism reasonable control and regulate the circulation ammonia water spray amount of doped tar, reach the setting temperature 78 90 DEG C of reducing raw coal gas export system even control at lower temperature, increase the recovery of tar, naphthalene, acidic gas etc. byproduct in raw coal gas, reduce the load of tar, naphthalene, acidic gas etc. in raw coal gas recovery in the operation process of recovery system primary cooler, prolong the maintenance time and service life of primary cooler etc. recovery equipment, save the cost, have the remarkable environmental protection, economic benefit.

The application relates to the technical field of CO2 capture, in particular to a CO2 adsorbent and a preparation method and application thereof. The preparation method of the CO2 adsorbent comprises the following steps: impregnating a carrier with an impregnation solution; wherein the impregnation solution comprises an organic amine and an aromatic hydrocarbon polycyclic epoxide compound, the aromatic hydrocarbon polycyclic epoxide compound comprises at least two epoxy functional groups, the aromatic hydrocarbon polycyclic epoxide compound further comprises at least one of benzene rings, biphenyl rings and naphthalene rings, and the carrier has pores; and heating and cross-linking; the organic amine and the aromatic hydrocarbon polycyclic epoxide compound are cross-linked in the pores of the carrier to form a network structure, and the CO2 adsorbent is obtained. The organic amine in the CO2 adsorbent has a network structure, the anti-leaching performance and stability of the network structure organic amine are improved, and the stability of the CO2 adsorbent is enhanced.

The invention discloses a liquid-phase indirect preparation method of high-purity lithium sulfide, and belongs to the field of fine chemical engineering. The preparation method comprises the following steps: firstly, enabling metal lithium to react with high-purity naphthalene at low temperature in an ether solvent in an anhydrous oxygen-free argon atmosphere to generate naphthyl lithium; then introducing high-purity hydrogen sulfide and a naphthyl lithium carrier to react at room temperature to generate lithium hydrosulfide; then converting at 100-150 DEG C to generate lithium sulfide; and cooling, filtering in an argon atmosphere, washing with an ether solvent, and carrying out vacuum drying to obtain high-purity finely-dispersed lithium sulfide with the purity of more than 99.99%. Compared with the prior art, the lithium sulfide obtained by the preparation method disclosed by the invention is powder which is high in purity, uniform in granularity, fine in dispersion and relatively good in flowability, is stable in process and product quality, can be suitable for industrial-scale production of high-purity lithium sulfide, and has a very good popularization and application value.

The application provides a bidentate phosphite polymer, a preparation method and application thereof, and a method for olefin carbonyl synthesis reaction. The bidentate phosphite polymer provided by the application is shown in formula (I) and is copolymerized by a specific bidentate phosphite ligand and 2-vinyl naphthalene. The bidentate phosphite polymer can be used in catalyzing the olefin carbonyl synthesis reaction, can not only ensure the catalytic performance of the olefin carbonyl synthesis reaction, but also can improve the solvent swelling resistance of the polymer, thereby being beneficial to ensuring the catalyst form stability and being beneficial to the stable production of aldehydes synthesized by the olefin carbonyl synthesis.

The invention discloses a preparation method of a solid-state battery with a silicon-based negative electrode. The preparation method comprises the following steps: preparation of pre-lithiated silicon particles, preparation of a conductive network precursor, preparation of a Si-C composite negative electrode layer, preparation of a composite solid-state electrolyte and battery assembly. Li3PS4 is used as a main electrolyte, LiI and Li3PS4 form a solid solution with low grain boundary impedance, so that the activation energy is reduced from 0.35 eV to 0.28 eV, then Li3N is added as an interface modifier, N3-contained in the Li3N can react with Si-OH on the surface of silicon to form a stable Si-N bond, and the interface impedance is greatly reduced; then CNT is used as an electronic conductive main body, and after the CNT is modified by a coupling agent, amino groups on the surface of the CNT and P in Li3PS4 can form stable C-P bonds, so that Li3PS4 particles are uniformly loaded on the surface of the CNT, and an electron-ion double-conductive channel is formed; and moreover, a lithium naphthalene tetrahydrofuran solution is adopted to carry out mild pre-lithiation on the silicon particles, so that active lithium required by formation of an SEI layer is accurately supplemented, excessive lithium is prevented from reacting with electrolyte, lithium loss is reduced, and the utilization rate of lithium is increased to 90% or above.

The utility model discloses a naphthalene water reducer neutralization reaction device capable of automatically adding alkali, and belongs to the technical field of water reducer production equipment. The naphthalene water reducer neutralization reaction device with the automatic alkali adding function comprises a reaction tank, a tank cover is installed at the top end of the reaction tank, four supporting columns are installed on the outer side of the bottom end of the reaction tank, a cooling mechanism is installed on the outer side of the reaction tank, an alkali liquor tank is arranged on one side of the reaction tank, a ring pipe is installed on the inner side of the reaction tank, and a plurality of alkali liquor spray heads are installed at the bottom end of the ring pipe. The top end of the alkali liquor tank is provided with a liquor feeding mechanism for supplying liquor to the annular pipe, the top end of the annular pipe is provided with a cleaning mechanism for cleaning the alkali liquor spray head, the reaction tank is internally provided with a mixing mechanism, the bottom end of the reaction tank is provided with a liquor outlet pipe, and one end of the liquor outlet pipe is provided with a valve. The neutralization reaction efficiency is improved, and the practical value is relatively high.

This invention relates to a rich-oil benzene removal tower for fractional distillation, specifically in the field of benzene removal tower technology. It includes a reboiler, a tower body, and a tower top. One side of the tower body is connected to a rich-oil pipeline and a steam pipeline, while the other side is connected to a naphthalene oil collection tank. A partition plate for separation is installed inside the tower body, with a receiving tray and downcomer on both sides of the partition plate to guide the liquid flow. The reboiler is connected to the tower body and is connected to a lean-oil pipeline. The tower top is connected to a crude benzene pipeline, which in turn connects to a reflux tank. The reflux tank is connected to the crude benzene storage tank and the inner cavity of the tower top. The crude benzene storage tank is connected to the tower body via a liquid phase distribution pump. In this invention, the partition plate within the tower body allows rich-oil to be fed from one side of the partition plate, while high-concentration naphthalene oil is collected from the other side. The benzene removal tower does not need to operate in conjunction with a naphthalene removal tower; the tower body can simultaneously remove high-concentration naphthalene oil (greater than 50%) while removing benzene, thereby reducing the naphthalene content in the lean oil and improving the naphthalene washing effect.