74 results about "Tributyl phosphate" patented technology

The application provides a method for preparing lithium iron phosphate by using waste lithium isooctanoate catalyst, and comprises the following steps: grinding and sieving the waste lithium isooctanoate catalyst to obtain lithium isooctanoate powder; mixing the lithium isooctanoate powder with water, adding concentrated hydrochloric acid to perform leaching reaction to obtain leaching slurry; filtering the leaching slurry to obtain filtrate and residue; adding activated carbon to the filtrate to perform adsorption and filtration, then adding HCl and FeCl3·6H2O to stir, and controlling the pH of the solution to be 1.0-1.5 to obtain an aqueous phase; uniformly mixing tributyl phosphate and sulfonated kerosene to obtain an organic phase; mixing, oscillating, standing and separating the aqueous phase and the organic phase to obtain an extraction phase and a raffinate phase; washing the extraction phase by using dilute hydrochloric acid to remove impurities, adjusting the molar ratio of P, Fe and Li in the extraction phase after impurity removal, adding a carbon source to obtain mixed slurry; performing spray drying on the mixed slurry, and performing high-temperature sintering, crushing and screening on the powder obtained by spray drying to remove iron, so as to obtain lithium iron phosphate. The application scheme realizes resource recycling and utilization, and the prepared product has high quality and low cost.

The invention discloses an Apiotrichum loubieri gene and an application of the Apiotrichum loubieri gene. Relates to the technical field of fermentation. The invention provides a specific strain and application thereof in reconstituted tobacco. According to the tobacco leaf extracting solution fermented by the bacterial strain, the content of esters such as 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, dimethyl phthalate, tributyl phosphate, dihydroactinidiolide and methyl palmitate is remarkably increased, and the content of the esters such as 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, dimethyl phthalate, tributyl phosphate, dihydroactinidiolide and methyl palmitate is remarkably increased; nine novel ester substances with aromatic smell, fruit fragrance, flower fragrance and other characteristic aromas are newly generated, and four phenolic aroma components are newly added. And the whole fragrance style is obviously enhanced. It is shown that the aroma-producing Apiotrichum loubieri AL-4 fermented tobacco enzyme extracting solution has good aroma-producing capacity, and through the combined effect of enzymolysis and fermentation, the aroma-producing Apiotrichum loubieri AL-4 fermented tobacco enzyme extracting solution is expected to play an important application value in the field of reconstituted tobacco raw material quality improvement.

The invention discloses a synthesis method of a super nano conductive agent, which comprises the following steps: preparing a rod-like lithium iron phosphate precursor with a nano size, dispersing tributyl phosphate in an organic solution, dispersing the prepared rod-like lithium iron phosphate precursor in a tributyl phosphate solution to obtain a lithium iron phosphate precursor dispersion liquid, and drying the lithium iron phosphate precursor dispersion liquid to obtain the super nano conductive agent. Mixing the lithium iron phosphate precursor dispersion liquid in a carbon source solution to prepare suspension slurry, and performing high-speed spray drying and granulation on the suspension slurry to obtain particle powder; the lithium iron phosphate precursor coated with the tributyl phosphate is in contact with the carbon source, a phosphate group of the tributyl phosphate reacts with a hydroxyl group on the carbon surface to form a carbon-oxygen-phosphorus covalent bond, so that the binding force between the lithium iron phosphate surface and carbon is enhanced, and the lithium iron phosphate surface and the carbon are more stable through certain directivity and saturability of the covalent bond. The bonding thickness is limited, the low resistivity is ensured, and the transmission efficiency of ions and electrons is improved.

The invention discloses a method for extracting technetium from PUREX process waste liquid. The method comprises the working procedures of material blending, extraction, washing, reduction reverse extraction and reverse extraction. According to the technetium extraction and purification process, the technetium is separated from elements such as zirconium, niobium, ruthenium, uranium, neptunium and plutonium by using the technetium as a raw material, tributyl phosphate (TBP) as an extracting agent and hydrogenated kerosene (OK) as a diluent, meanwhile, the economy and safety of the reagents adopted by the process are verified by engineering, and the operation process of each procedure also meets the requirements of high flux, continuous treatment and remote operation.

This invention relates to a method for extracting technetium from nuclear fuel reprocessing waste using an extraction method, comprising the following steps: preparing a technetium-zirconium co-extraction feed; co-extracting technetium and zirconium using a TBP-kerosene organic solution as the extractant; reducing and back-extracting the technetium in the TBP organic phase co-extraction solution using a reducing stripping agent; and back-extracting the zirconium in the remaining TBP organic phase using a complexing stripping agent. This method improves upon existing techniques for extracting technetium from nuclear fuel reprocessing waste using extraction methods, which generate a significant amount of organic phase radioactive waste other than tributyl phosphate and require an additional solvent treatment system. It avoids introducing additional solvents and metal ion groups into the reprocessing system and is better compatible with the main process flow and facilities of reprocessing plants using the PUREX process, thus making the technetium extraction process easier to implement in reprocessing plants. The method provided by this invention prevents technetium from entering vitrification and geological disposal, thus preventing long-term hazards to the biosphere.

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.

This invention proposes a magnetic material coating stripping agent and its preparation and application methods, belonging to the technical field of stripping agents. It includes an aqueous solution and a powder. The aqueous solution is prepared from the following raw materials in parts by weight: 5-15 parts sodium phosphate, 0.5-2 parts sodium benzoate, 1-5 parts glycerol, 0.5-2 parts tributyl phosphate, 0.1-1 parts water-soluble defoamer BYK022, and 75-90 parts water. The powder is prepared from the following raw materials in parts by weight: 3-5 parts modified photocatalytic degradation agent, and 4-6 parts acid-loaded porous nano-calcium carbonate. This magnetic material coating stripping agent exhibits good coating stripping effect, acting more quickly and effectively between the coating layer and the magnetic substrate, reducing peel strength. It is virtually non-corrosive to the magnetic substrate material, easy to store and transport, has a long service life, and has broad application prospects.

The application discloses a mineralization treatment method of organic waste liquid, and belongs to the technical field of radioactive waste treatment. The organic waste liquid contains uranium, tributyl phosphate and diluent. The mineralization treatment method comprises the following steps: the organic waste liquid is separated through short-path molecular rectification to obtain a diluent fraction and a tributyl phosphate fraction; the tributyl phosphate fraction is reacted with alkali liquor to generate an alkaline hydrolysis product containing dibutyl phosphate salt, n-butanol, water and uranium; the n-butanol is collected through condensation reflux; and the remaining alkaline hydrolysis product is treated through two-stage oxygen-controlled incineration, so that phosphate glass and qualified flue gas are finally obtained. The mineralization treatment method has the advantages of no corrosion, short process, high-efficiency mineralization and stabilization of the waste liquid, direct disposal of the product, consideration of resource recovery and radioactive safety, and easy industrialization.

The invention relates to the technical field of organic synthesis, and provides a synthesis method of tributyl phosphate. The method comprises the following steps: adding a catalytic amount of quaternary phosphonium salt ionic liquid into n-butyl alcohol, respectively conveying the n-butyl alcohol (containing the quaternary phosphonium salt ionic liquid) and phosphorus oxychloride into a tubular reactor for reaction, controlling the esterification temperature to be 2-8 DEG C, neutralizing the effluent reaction liquid with solid sodium hydroxide in a neutralization reaction kettle, controlling the neutralization temperature to be 15-35 DEG C, and carrying out heat preservation for 2-4 hours; a tributyl phosphate crude product is obtained through a filtering device, finally, a tributyl phosphate product is obtained through reduced pressure distillation, the yield is larger than or equal to 95%, and the purity is larger than or equal to 99.5%. The kettle residue after reduced pressure distillation is the quaternary phosphonium salt ionic liquid which can be directly used mechanically without post-treatment. According to the invention, by utilizing the excellent mass transfer and heat exchange performance of the tubular reactor, the dripping time is greatly shortened compared with the traditional kettle reaction, and the equipment cost is greatly reduced compared with the microchannel reactor, so that the production cost of tributyl phosphate is reduced.

A kind of phosphoric acid tributyl ester solution purifying mixing device, including shell;Further comprising: top cover, top cover is located at the top opening of shell, and top cover is provided with feeding opening;Stirring blade, the shaft body is provided below top cover, and shaft body is rotatably connected with top cover, stirring blade is provided with suspension part, and stirring blade is connected with the bottom end of shaft body by screw;Telescopic component, the number of telescopic component is multiple, and multiple telescopic components are annular array and are arranged below the four perimeter edges of top cover;Driving mechanism, several telescopic components are all connected to driving mechanism.The telescopic component and driving mechanism are set, when routine maintenance, top cover is adjusted to high position, shaft body and stirring blade leave shell, move to above shell, cancel the obstruction to inner wall of shell, and stirring blade is located above shell, it is convenient to maintain and clean inside shell and stirring blade.

This invention belongs to the field of metallurgical separation technology and relates to a method for separating and recovering tungsten and vanadium from a high-concentration molybdenum solution. The method includes: adding hydrogen peroxide solution to the liquid to be treated, heating to 60-80°C and maintaining the temperature for 30-60 minutes, then adjusting the pH to 2.5-3.5, and then adding an extractant for extraction to obtain a tungsten-vanadium-containing organic phase. The extractant consists of an amine extractant, tributyl phosphate, an ionic liquid, hyperbranched polyglycerol, and a diluent. The concentration of molybdenum in the liquid to be treated is not less than 150 g / L, the concentration of tungsten is 1-10 g / L, and the concentration of vanadium is 1-10 g / L. This invention aims to solve the technical problems of low efficiency and easy emulsification in the separation of tungsten and vanadium from high-concentration molybdenum solutions.

This application relates to the field of marine-source polyvinyl chloride (PVC) waste treatment technology, specifically disclosing a phase-separation type organic solvent and a treatment process for marine-source PVC foam waste. The phase-separation type organic solvent includes a dissolving phase, a desalting phase, and a phase stabilizer. The dissolving phase includes limonene and p-methoxycyclohexanone. The desalting phase is a saturated diol. The phase stabilizer is tributyl phosphate. The dissolving phase is responsible for dissolving the PVC foam, the desalting phase is responsible for adsorbing the water and salt carried in the foam, and the phase stabilizer ensures a clear, non-emulsifying interface between the two phases. The three phases work synergistically to achieve simultaneous dissolution, desalination, and phase separation, and the regenerated PVC has extremely low salt content, eliminating the need for a water washing desalination step, thus reducing the generation and discharge of high-salt wastewater.

The present application relates to nuclear chemical reprocessing technical field, disclose a kind of method and device for processing radioactive waste organic phase, the method comprises: to the supergravity rotating bed is added waste organic phase liquid, and to the supergravity rotating bed is sent with heat, under the supergravity effect generated by supergravity rotating bed rotation, vapor-liquid mass transfer heat transfer is fully separated out nuclide metal complex, mixture of tributyl phosphate / kerosene and kerosene.The device includes supergravity rotating bed, heavy component tank, tributyl phosphate / kerosene product tank, reflux tank, and reflux pump connected with reflux tank, and kerosene product tank connected with reflux pump, and reflux pump is also communicated with supergravity rotating bed.The present application is when working, vapor-liquid interface renewal speed is fast under supergravity environment, generates huge phase interface, so it strengthens the transfer efficiency, mixture can be separated in short time;In addition, the process equipment volume is small, process flow is simple, and operating cost is low.

The application discloses a kind of hole transport material and synthesis method, perovskite solar cell and preparation method, belong to solar cell technical field.In the present application, based on the chemical structure general formula of hole transport material: R is alkyl, the molecule more conducive to the transmission of hole that triphenylamine group constructs, the existence of N atom is more conducive to the transmission of charge, the existence of alkoxy can increase the transport capacity of molecule, can improve the device stability and photoelectric conversion efficiency of perovskite solar cell, solve the problem that synthesis difficulty of Spiro-OMeTAD in prior art, after doping Li, Co and tributyl phosphate, poor stability.

The application discloses a kind of admixtures for capacitor concrete and preparation method thereof, belong to concrete admixture technical field.Admixtures for capacitor concrete includes the following raw materials: electrically conductive polycarboxylate superplasticizer, composite defoamer and water;Electrically conductive polycarboxylate superplasticizer includes the following raw materials: polyhydroxy polyaniline, methyl allyl alcohol polyoxyethylene ether, unsaturated carboxylic acid monomer, 2-acrylamide-2-methylpropane sulfonic acid, chain transfer agent, reducing agent and oxidizing agent, crosslinking agent and water;Composite defoamer includes the following raw materials: glycerol polyether, tributyl phosphate and water.The application also discloses the preparation method of the above-mentioned admixtures for capacitor concrete.The admixtures for capacitor concrete of the application can effectively disperse electrically conductive materials such as carbon black by means of electrostatic adsorption and steric hindrance effect of electrically conductive polycarboxylate superplasticizer, avoid the agglomeration of electrically conductive materials, and further promote the enhancement of the electrically conductive performance of capacitor concrete during the preparation of capacitor concrete.

The application discloses a cobalt-based adhesive brazing filler metal, which is composed of cobalt-based alloy brazing filler metal powder 90-93% by mass fraction and an adhesive, and the adhesive is composed of the following components: polyacrylic acid ethyl ester 1-2%, ethyl cellulose 0.5-1%, tributyl phosphate 1.5-2%, diisobutyl phthalate 3-4%, fatty acid amide 0.5-1% and anti-aging agent 0.5-1%. In addition, the application further provides a preparation method of the cobalt-based adhesive brazing filler metal, which comprises the following steps: 1, cobalt-based alloy brazing filler metal powder preparation; 2, adhesive preparation; and 3, adhesive preparation. The cobalt-based alloy brazing filler metal powder is adhered and formed by the adhesive, and the cobalt-based adhesive brazing filler metal has adhesion, so that the cobalt-based adhesive brazing filler metal and a workpiece to be welded are adhered and not fallen off, uniformity can be ensured during brazing, the welds are consistent, and good brazing effect is achieved. In addition, by controlling the components of the adhesive, the cobalt-based adhesive brazing filler metal has the characteristics of low carbon residue, low oxidation, low delamination and long shelf life.

The invention discloses fipronil missible oil and a preparation method thereof. Relates to the technical field of pesticide preparations. Comprising the following steps: stirring odorless kerosene and tributyl phosphate; adding nonylphenol polyoxyethylene ether, and stirring; adding dodecylbenzene sulfonic acid calcium salt, and stirring; adding polyoxyethylene nonylphenol phosphate, and stirring; and finally, adding fipronil, and continuously stirring to obtain the fipronil missible oil. The finished product is low in odor, clear, stable and good in water dilution and emulsification; through sand-based bioassay, under the same soil target concentration (g / g), the LC50 of the missible oil for 12 hours and 24 hours is obviously lower than that of the missible oil sold in the market, and the missible oil has a better lethal effect.

This application discloses a high-concentration thallium solvent extraction method for the lithium salt extraction industry, belonging to the field of hydrometallurgical technology. The method provided by this application includes the following steps: Step S1: Adding a pH adjuster to the thallium waste liquid to adjust the pH, then adding an oxidant, and stirring to react and obtain a mixed solution; the pH adjuster is HCl; Step S2: Adding an extractant and a diluent to the mixed solution, stirring to extract and separate, obtaining a thallium-containing organic phase and a first raffinate; the extractant includes N503 extractant and tributyl phosphate; Step S3: Washing the thallium-containing organic phase with hydrochloric acid solution, then adding ammonium acetate solution for back-extraction and separation, obtaining a back-extraction solution and a second raffinate. The method of this application has good selectivity, high extraction rate, low environmental pollution, low cost, and the extractant can be reused.

The application belongs to the technical field of hydrometallurgy, and particularly relates to a ternary eutectic solvent and application thereof in separating lithium and transition metals in a lithium battery leaching solution. The ternary eutectic solvent is obtained by mixing propylcaine, lauric acid and tributyl phosphate according to a molar ratio of 1:1.5:(0.5-2). The method for separating lithium and valuable metals in waste ternary lithium batteries by using the ternary eutectic solvent comprises the following steps: (1) taking the ternary eutectic solvent as an organic phase, adding the lithium battery leaching solution into the organic phase for extraction, and centrifuging to separate phases, so as to obtain a nickel-cobalt-manganese loaded organic phase and a lithium-containing raffinate; and (2) adding a stripping agent into the nickel-cobalt-manganese loaded organic phase for back extraction, and centrifuging to separate phases, so as to obtain a nickel-cobalt-manganese stripping solution and a regenerated organic phase. The separation method has excellent selective extraction effect.

The invention discloses a nuclear waste multi-isotope extraction method, an ultra-wide temperature range nuclear battery preparation method and an ultra-wide temperature range nuclear battery preparation system. The nuclear waste multi-isotope extraction method comprises the following steps: 1, crushing operation; 2, sequentially carrying out three-stage gradient extraction on the nuclear waste activated powder by adopting a double crown ether / ionic liquid composite extraction system, a di (2-ethylhexyl) phosphoric acid / tributyl phosphate composite extraction system and a di-isodecyl phosphoric acid / polyethylene glycol 400 composite extraction system; and 3, purification operation. According to the method, mechanical crushing is matched with high-frequency ultrasonic treatment, so that sufficient crushing and surface activation of nuclear waste are realized, and the effect of remarkably improving the subsequent extraction reaction rate and selectivity is achieved. On the basis, the Cs-137, the Am-241 and the Cm-244 are separated step by step by the constructed three-stage gradient extraction module, so that the effects of shortening the separation process and improving the isotope separation factor and selectivity are achieved.

The application discloses a method for preparing total anthraquinones in rhubarb by ultrafiltration-serial countercurrent extraction, and belongs to the technical field of natural substance separation. The method comprises the following steps: extracting rhubarb raw materials by ammonia osmosis, removing macromolecular impurities from the obtained osmosis liquid by ceramic ultrafiltration membrane filtration; adjusting the pH of the ultrafiltrate to serve as an extracted water phase, and performing countercurrent extraction on the extracted water phase by an extractant composed of solvent No. 260 and tributyl phosphate or trialkyloxy phosphine; loading the extractant to perform countercurrent back extraction on the extractant by an alkaline back extraction agent; and finally, acidifying, concentrating and drying the back extraction liquid to obtain high-purity total anthraquinones in rhubarb. The application couples ultrafiltration, serial countercurrent extraction and complexation extraction, solves the defects of traditional processes, such as easy emulsification, great solvent toxicity, high residue and high cost, and has the advantages of high selectivity of target components, high product purity, recyclable extractant, green and environment-friendly process, suitability for industrial production and the like.

The application discloses an environment-friendly anti-dissolution gel foam extinguishing agent, which is composed of a foaming agent, a gelling agent, a crosslinking agent and a flame retardant, wherein the foaming agent is alkyl polyglycoside APG0810, the gelling agent is kappa-carrageenan, the crosslinking agent is gluconolactone, and the flame retardant is tributyl phosphate. Compared with existing foam extinguishing agents, the anti-dissolution gel foam extinguishing agent has longer storage stability, fewer component types, better anti-dissolution and better extinguishing performance. In addition, the anti-dissolution gel foam extinguishing agent has lower manufacturing cost, simple preparation process and is more convenient for large-scale industrial production.

The invention discloses a method for detecting tributyl phosphate in ardealite. The method comprises the following steps: during sample pretreatment, treating an ardealite raw material or the ardealite subjected to innocent treatment to obtain an ardealite leachate; measuring the content of soluble non-orthophosphate in the ardealite leaching solution; selecting a dilution ratio according to the content of soluble non-orthophosphate to obtain a diluted sample solution; adding a substitute tripropyl phosphate-D21 into the diluted sample solution, extracting by using an n-hexane-acetone mixed solvent as an extracting agent, collecting an upper organic phase, concentrating, redissolving by using n-hexane, loading the sample to an activated HLB small column, eluting by using the n-hexane-acetone mixed solvent, and fixing the volume to obtain a sample to be detected; then, a GC / MS method is adopted for determination, an internal standard method is adopted for constructing a quantitative calibration curve, and the quantitative internal standard is tributyl phosphate-D27. According to the method, the solid phase extraction-gas phase mass spectrometry is used for detecting the content of the tributyl phosphate in the phosphogypsum system for the first time, and the detection sensitivity and accuracy are improved.

Provided is a method for efficiently removing the butanol, dibutyl phosphate, etc., contained as impurities in tributyl phosphate. The technique of the disclosure is a method for producing tributyl phosphate characterized by having a step that brings crude tributyl phosphate into contact with an aluminosilicate compound in which the molar ratio (SiO2 / Al2O3) of silica and alumina in the zeolite framework is 10 or more. Also disclosed is a method for producing an extractant that contains tributyl phosphate and, as a diluent, C6 or higher hydrocarbon, wherein the tributyl phosphate is mixed with the diluent after the impurities contained in the component have been removed by contact with an aluminosilicate compound in which the molar ratio of silica and alumina in the zeolite framework is 10 or more.

The invention discloses a process for extracting and removing sodium from lithium carbonate lithium precipitation mother liquor in the field of hydrometallurgy, which comprises the following steps: firstly, filtering the lithium precipitation mother liquor, adjusting the pH value, and dispersing a specially prepared multi-stage structure doped carbon-based organic silicon composite mesoporous material into sulfonated kerosene; adding tributyl phosphate and sorbitan oleate, and emulsifying to form an extraction organic phase; and contacting the pretreated mother liquor with an extraction organic phase in a three-stage counter-current extraction system to obtain a lithium-loaded organic phase and a sodium-containing raffinate. And washing the loaded organic phase with deionized water, carrying out two-stage reverse extraction with a sulfuric acid solution to obtain a lithium-rich solution, returning the lithium-rich solution to a lithium precipitation process, and carrying out alkali washing on the organic phase after reverse extraction so as to be recycled for multiple times. And evaporating and crystallizing the sodium-containing raffinate to obtain a byproduct anhydrous sodium sulfate. The process has accurately regulated and controlled pore structure and surface chemical characteristics, realizes efficient separation of lithium and sodium, is simple in process flow and high in lithium recovery rate, and can realize comprehensive utilization of resources.

The invention provides a one-step synthesized low-temperature deposited silicon-carbon negative electrode material and a preparation method and application thereof, and the method comprises the following steps: S1, drying resin-based porous carbon powder, filling the dried resin-based porous carbon powder into an FBCVD reactor, and carrying out gas replacement with inert gas; s2, the reactor is heated to 360-480 DEG C, mixed gas composed of trisilane and an accelerant is introduced for silicon deposition, then introduction of the mixed gas is stopped, and inert gas is used for atmosphere replacement; s3, the reactor is heated to 520-600 DEG C, furfuryl alcohol-water-tributyl phosphate composite steam is introduced for carbon coating, and then inert gas is introduced for atmosphere replacement; s4, air with a certain concentration is introduced at the same temperature, and surface passivation is carried out; and S5, introducing the inert gas again to carry out atmosphere replacement, cooling and discharging to obtain the one-step synthesized low-temperature deposited silicon-carbon negative electrode material. The method has the advantages of simple reaction steps, low energy consumption, good deposition effect, difficult agglomeration of silicon particles, and uniform carbon coating.

The invention provides an extraction system and method for extracting and enriching lithium from a lithium-containing sodium sulfate solution. The extraction system comprises an extraction agent, a synergistic extraction agent, a diluent and a modifier, and the extraction agent is salicylamide as shown in a formula (I); the synergistic extractant is a neutral organic phosphorus compound with lithium coordination capability. According to the method, salicylamide is used as an extraction agent, phosphorus-containing reagents such as tributyl phosphate are used as a synergistic extraction agent, the extraction agent and other organic solvents are used for constructing an extraction system, lithium ions are extracted from a lithium-containing sodium sulfate solution, and then washing and reverse extraction are carried out, so that the ions are finally enriched in reverse extraction liquid. Compared with beta-diketone and salicylate lithium extraction, the method has the characteristics of stable chemical structure, mild synthetic route and cheap and easily available raw materials.

The invention discloses a tributyl phosphate synthesis method based on phosphorus pentoxide solvation feeding, which comprises the following steps: adding an organic solvent into phosphorus pentoxide positioned on a microporous filter plate, dissolving the phosphorus pentoxide, adding the organic solvent solution of the phosphorus pentoxide into a mixture of n-butyl alcohol, a catalyst and the organic solvent through the microporous filter plate, and stirring to obtain a mixture; an esterification reaction is carried out, and the organic solvent and water generated by the esterification reaction form azeotrope; carrying out oil-water separation on the azeotrope; returning an organic phase to the microporous filter plate, and dissolving phosphorus pentoxide; and repeating the steps until the phosphorus pentoxide is completely dissolved and no water is generated in the esterification reaction to obtain the TBP. According to the invention, P2O5 stored in a microporous filter plate is slightly dissolved by a circulating organic solvent and then is dropped into a mixture in a liquid form, so that excessive local raw materials and side reaction caused by direct addition of P2O5 solid are avoided. According to the method, the generation of byproducts such as dibutyl phosphate and monobutyl ester can be remarkably reduced under mild and low-pollution conditions, the selectivity and total yield of TBP are improved, the subsequent separation and purification process is simplified, and the production cost of TBP is reduced.

The invention belongs to the field of radioactive organic waste liquid treatment, and particularly relates to a method for treating radioactive TBP / OK organic waste liquid through plasma. The invention relates to a method for treating radioactive TBP / OK organic waste liquid by using plasma. The method comprises the following steps: S1, preparing an emulsion containing a waste tributyl phosphate / kerosene organic phase, 10% wt of a phosphorus fixing agent and 0.5% wt of a surfactant O-9; s2, the emulsified liquid enters a cracking environment at the feeding rate of 2-10 kg / h, the temperature of a central plasma arc is not lower than 5000 K, and the temperature of an incineration torch reaction zone is not lower than 1200 DEG C; and S3, adding a glass raw material, and forming a glass solidified body with the radionuclide and ash obtained in S2 in a melting zone at the temperature of not lower than 1000 DEG C. Through systematic schemes such as plasma torch system innovation, curing tail gas deep integration, overall process optimization and targeted problem solving, the radioactive TBP / OK organic waste liquid treatment technology capable of simultaneously meeting multiple targets such as ultrahigh damage efficiency, ultralow pollutant emission and thorough nuclide stabilization is successfully provided.

The present application belongs to the field of biology, and particularly relates to a Bacillus coagulans strain for producing tributyl phosphate and application thereof. The Bacillus coagulans zqw106 provided in the present application has the preservation number of CGMCC No. 25151, has the ability of fermenting to produce tributyl phosphate, and the content of tributyl phosphate in the fermentation liquor is higher than that of the existing reported microorganism. In an experiment, the content of tributyl phosphate produced by the strain is 3.449 mg / L. The strain can provide a strain resource for the research of microbial fermentation to produce tributyl phosphate. The strain has the characteristics of acid tolerance, heat tolerance, salt tolerance, easy cultivation and preservation, and the like.