48 results about "Trichloroethane" patented technology

The invention provides chlorotrifluoroethylene continuously prepared based on a microchannel reactor and a preparation method of the chlorotrifluoroethylene, and the chlorotrifluoroethylene comprises the following raw materials in parts by weight: 1, 1, 2-trifluoro-1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 The low-temperature refrigerant refrigerant is prepared from the following components in parts by weight: 90 to 100 parts of 1, 2-trichloroethane, 1 to 5 parts of a zinc fluoride induced palladium-copper bimetallic catalyst, 8 to 15 parts of a cyclohexyl dimethyl ether-formic acid composite hydrogen donor, 0.5 to 2 parts of trifluoroacetic anhydride, 0.1 to 0.5 part of a perfluoropolyether lubricant, a proper amount of a low-temperature mixed refrigerant and 15 to 20 percent by weight of diluted hydrochloric acid. According to the invention, the preparation efficiency and product purity of chlorotrifluoroethylene can be improved, and stable operation of the preparation system and reasonable treatment of byproducts can be guaranteed.

The invention relates to the field of environmental bioremediation, in particular to a novel Desulfovibrio Co strain and application of the novel Desulfovibrio Co strain in reduction of sulfate type oxidized sulfide and degradation and conversion of 1, 1, 1-trichloroethane. The desulfurization vibrio Co strain is preserved in China General Microbiological Culture Collection Center (CGMCC) on February 24, 2024, the address is Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, the postcode is 100101, and the preservation number is CGMCC No.41182. The desulfurization vibrio Co strain can be used for preparing the desulfurization vibrio Co strain.

The invention discloses a resource utilization method of 1, 1, 2-trichloroethane waste liquid, which comprises the following steps: 1) feeding the 1, 1, 2-trichloroethane waste liquid into a scraper device to remove heavy components, and extracting gas-phase light components from the top; (2) condensing the gas-phase light component, feeding into a chlorination reactor, and carrying out chlorination reaction; and 3) carrying out reactive distillation on the material at the outlet of the chlorination reactor to remove light components and heavy components to obtain 1, 1, 2-trichloroethane. According to the method, on one hand, impurities which influence the purity of 1, 1, 2-trichloroethane and are difficult to separate react with chlorine under specific conditions to generate heavier components, and on the other hand, it is ensured that light components cannot be chlorinated into the impurities which are difficult to separate, and 1, 1, 2-trichloroethane with the purity being 99% or above can be recycled; on the other hand, 5-20 wt% of 1, 1, 2-trichloroethane is additionally generated in the reactive distillation process, waste liquid recycling is achieved, and the method has the advantages of being simple in technological process, low in energy consumption and high in product yield.

The utility model provides a corrosion-resistant titanium heat exchanger, and belongs to the technical field of heat exchangers. Comprising a heat exchanger shell and a liquid inlet pipe fixedly mounted in the center of the upper surface of the heat exchanger shell, a flow dividing cavity communicating with the liquid inlet pipe is formed in the top of the inner wall of the heat exchanger shell, and a heat exchange cavity is formed in the heat exchanger shell and located below the flow dividing cavity; a concentration cavity is formed in the position, located below the heat exchange cavity, in the heat exchanger shell. The corrosion resistance of the heat exchange tube is improved through the anti-corrosion titanium layer, titanium has good tolerance to most inorganic acids such as hydrochloric acid, sulfuric acid and nitric acid, the titanium cannot be corroded by dilute hydrochloric acid, dilute sulfuric acid, nitric acid or dilute alkali solution at normal temperature, and the titanium also has certain tolerance to organic acid, so that the corrosion resistance of the heat exchange tube is improved. The catalyst can be used in organic media such as gasoline, toluene, phenol, formaldehyde, trichloroethane, acetic acid, citric acid, monochloroacetic acid and the like.

The invention relates to a preparation method of a catalyst for synthesizing hexafluoro-1, 3-butadiene, in particular to a confinement alloy catalyst for synthesizing hexafluoro-1, 3-butadiene as well as a preparation method and application of the confinement alloy catalyst. The preparation method comprises the following steps: adding a silicon-based template, a solvent and a metal salt precursor into a hydrothermal kettle, carrying out hydrothermal treatment for a period of time, then carrying out centrifugal separation and drying on the obtained product, and finally putting the product into a muffle furnace for roasting to obtain the confinement alloy catalyst. The preparation method is simple in process and easy to repeat; the prepared confinement alloy catalyst is relatively long in service life, and has relatively high conversion rate and selectivity when being used for a reaction for preparing hexafluoro-1, 3-butadiene through continuous hydrogenation coupling of 1, 1, 2-trifluoro-1, 2, 2-trichloroethane.

The application discloses a preparation method and application of a catalyst for cracking 1,2-dichloroethane to produce vinyl chloride, and comprises the following steps: 1) a neodymium ore is leached with hydrochloric acid, and after filtering a leaching solution, potassium chloride is added to form a doped precursor K2[NdCl3]; 2) an active metal oxide is dissolved in hydrochloric acid, and then added into the doped precursor K2[NdCl3] solution, and co-precipitation is carried out by adding alkali to obtain an emulsion of a doped active component; the active metal oxide is at least one of oxides of vanadium, manganese, titanium and scandium; 3) the emulsion of the doped active component is mixed with a liquid carrier to obtain the catalyst; the liquid carrier is one or more of chloroform, carbon tetrachloride, 1,1,2-trichloroethane and chlorobenzene.

The invention discloses a synthesis method of 3, 3-dimethyl-4, 6, 6-trichloro-7, 7, 7-trifluoroheptanoate, and relates to the technical field of organic synthesis. The 3, 3-dimethyl-4, 6, 6-trichloro-7, 7, 7-trifluoroheptanoate is obtained by taking methyl 3, 3-dimethyl-4, 6, 6-trichloro-7, 7, 7-trifluoroheptanoate and trifluorotrichloroethane as raw materials and carrying out addition reaction under the action of a catalyst. The preparation method comprises the following steps: (1) preparing a catalyst; (2) premixing; (3) initiating reaction; (4) reacting; (5) recycling; (6) layered washing; and (7) dehydrating. The method has the advantages that the reaction is performed in stages, and the catalyst with stable property and flowability is firstly prepared; adding relatively excessive catalyst to initiate reaction at low temperature; and after the reaction is initiated, adding the residual catalyst and the reaction raw materials in a double-dropwise manner. Therefore, the problems of low synthesis efficiency of the catalyst after addition by a one-pot method, high deactivation rate of the catalyst due to too fast temperature rise after initiation of the addition reaction, too long reaction time, low reaction yield and the like are avoided.

A method for separating R22 and HFP, the method comprising: a mixing step for obtaining a mixture for extraction, the mixture being a mixture of a first mixture containing R22 and HFP and an extraction solvent containing an organic solvent selected from the group consisting of dichloromethane, chloroform, 1, 1, 1-trichloroethane, 1, 1, 2-trichloroethane, 1, 1, 1, 2-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3-tetrachloroethane, 1, 1, at least one chlorine-containing compound selected from the group consisting of 1, 1, 1, 2-tetrachloroethane, pentachloroethane, hexachloroethane, trichloroethylene and tetrachloroethylene; and an extraction distillation step in which the mixture for extraction is distilled to obtain a first distillate having HFP as the main component and a first bottoms product having the extraction solvent as the main component and containing R22, respectively, and an extraction distillation step in which the mixture for extraction is distilled to obtain a first distillate having HFP as the main component and a first bottoms product having R22 as the main component.

An object of the present invention is to provide a novel azeoropic or azeotrope-like composition that is effective for the separation of HF from 1,1,2-trichloroethane (HCC-140), trans-1,2-dichloroethylene (HCO-1130(E)), or cis-1,2-dichloroethylene (HCO-1130(Z)). The object can be achieved by an azeotropic or azeotrope-like composition comprising HCC-140, HCO-1130(E), or HCO-1130(Z), and hydrogen fluoride.

The invention discloses a novel refrigerant and a preparation method thereof, and an underground phase change temperature adjusting device, method and equipment, and relates to the technical field of underground operation, the novel refrigerant containing trichloroethane and dichloropropane provided by the invention is in a liquid state at normal temperature and normal pressure, the boiling point temperature can be about 70-110 DEG C according to different component contents at the normal pressure, and the temperature of the refrigerant can be about 70-110 DEG C according to different component contents. The critical temperature of the novel refrigerant can reach about 130-300 DEG C according to different component contents under pressurization, so that the novel refrigerant provided by the invention can be subjected to phase change in a high-temperature environment, the novel refrigerant can be applied to underground phase change temperature adjusting devices and equipment for high-temperature operation, heat can be absorbed by utilizing heat absorption phase change to realize cooling, and the service life of the novel refrigerant is prolonged. The heat release phase change can release heat to achieve temperature rise, so that heat transfer and temperature control are achieved, the temperature control device can be suitable for controlling the temperature of the working environment of underground instruments and equipment, and the instruments and equipment can normally, stably and reliably work underground.

The present invention provides a tetrachlorosucrose synthesis method, and relates to the technical field of chemical industry production, and the tetrachlorosucrose synthesis method comprises the following steps: (1) cooling trichloroethane, adding thionyl chloride, adding a sucrose solution, and carrying out heat preservation to obtain a material A; (2) heating the material A for the first time, preserving heat for the first time, heating for the second time, preserving heat for the second time, heating for the third time, preserving heat for the third time, heating for the fourth time, preserving heat for the fourth time and cooling to obtain a material B; (3) heating for the fifth time, preserving heat for the fifth time, heating again after cooling, and repeating the steps; heating for the sixth time, preserving heat for the sixth time, heating again after cooling, and repeating the steps; heating for the seventh time, preserving heat for the seventh time, cooling and then heating again, and repeating the steps to obtain a material C; (3) cooling the material C, neutralizing, reacting, and adjusting the pH value; and (4) carrying out rotary evaporation, and removing trichloroethane and DMF to obtain the tetrachlorosucrose. The method has the advantages of low cost, high yield, environmental protection and the like.

The invention belongs to the technical field of soil remediation, and particularly relates to a remediation material for degrading polluted soil chlorinated hydrocarbon and a preparation method of the remediation material. The repair material for degrading the chlorinated hydrocarbon in the polluted soil is prepared from the following raw materials: humic acid, rhamnolipid, a biological agent and diatomite. The final repairing material utilizes mutual complementation and mutual synergism of humic acid, rhamnolipid, the biological agent and diatomite, has a remarkable effect in the aspect of degrading trichloroethylene, cis-1, 2-dichloroethylene, trichloroethane and 1, 2-dichloroethane, can be used for repairing chlorohydrocarbon polluted soil, and achieves a better degradation effect.

The invention provides a preparation method of polyurethane sponge with integral fireproof and flame-retardant properties and good environmental protection property, and the preparation method comprises the following steps: mixing polyether polyol, isocyanate, environment-friendly fireproof microcapsules, a catalyst, a cross-linking agent, a foam stabilizer and a cooling type foaming agent, and carrying out foaming reaction to obtain polyurethane fireproof sponge, wherein the cooling type foaming agent is selected from at least one of perfluorohexanone, perfluorohexane, tetrafluorodibromoethane and heptafluoropropane; a capsule core material of the environment-friendly fireproof microcapsule is selected from at least one of carbon dioxide, heptafluoropropane, hexafluoropropane, perfluorohexanone, perfluorohexane, tetrafluorodibromoethane and trifluorotrichloroethane.

The invention discloses a non-metal pipeline with heat preservation performance and a manufacturing method thereof. The non-metal pipeline comprises a non-metal pipe body, a heat preservation layer and a polyethylene outer protection pipe, wherein the non-metal pipe body is sequentially and coaxially sleeved with the heat preservation layer and the polyethylene outer protection pipe. The non-metal pipe body is further sleeved with a plurality of supports, and the other free ends of the supports abut against the polyethylene outer protection pipe. The thermal insulation layer is prepared by foaming and curing a thermal insulation material; the thermal insulation material comprises a component A and a component B, the component A comprises the following components in percentage by mass: 1%-5% of ethylenediamine polyether, 0.5%-2.5% of triethanolamine trifluorotrichloroethane silicone oil, 5%-10% of B-trichloroethyl phosphate and the balance of I type fire-retardant polyether; the component B is prepared from polyphenyl polyisocyanate; the mass ratio of the component A to the component B is 1: (1-1.05). The non-metal pipeline has a good heat preservation effect.

The seed crystal cleaning method comprises the following steps: S1, washing germanium seed crystals with purity and dislocation meeting requirements by using pure water; s2, the seed crystals are sequentially placed in trichloroethane, acetone, methanol and pure water for ultrasonic treatment; s3, alkali corrosion: S31, placing the seed crystal in an alkali corrosion liquid, submerging the seed crystal, boiling for 5-10 min, and taking pure water, hydrogen peroxide and sodium hydroxide in a volume ratio of 100: (10-20): (1-2) as the alkali corrosion liquid; s32, then adding normal-temperature pure water, so that the alkaline corrosion liquid is cooled in a gradient manner and kept at a constant temperature; s33, after constant-temperature keeping is finished, normal-temperature pure water is used for flushing; s4, acid corrosion: S41, carrying out water bath on an acid corrosion liquid to 5-10 DEG C, and taking hydrofluoric acid and nitric acid as the acid corrosion liquid according to a volume ratio of 1: (8-10); s42, the seed crystals are put into an acid corrosion solution to be corroded for 1-2 min; s43, then adding normal-temperature pure water into the corrosive liquid until the corrosive liquid does not react any more; s44, the seed crystals are taken out and washed with normal-temperature pure water; s5, dehydrating the seed crystals in a dehydration organic solvent; and S6, storing in a nitrogen cabinet.

The invention relates to a microbial agent for degrading trichloroethane as well as an enrichment method and application of the microbial agent, and belongs to the technical field of microbial engineering. The invention provides a microbial agent for degrading trichloroethane, which comprises a functional bacterium A and a functional bacterium B. The functional bacterium A and the functional bacterium B have amino acid sequences for coding dehalogenase a and / or dehalogenase b, the amino acid sequence for coding dehalogenase a is shown as SEQ ID NO.3, and the amino acid sequence for coding dehalogenase b is shown as SEQ ID NO.4. The invention further provides a preparation method of the microbial agent for degrading trichloroethane. Experiments find that 1, 1, 2-TCA can be degraded into 1, 2-DCA by the dehalogenase a under the condition that the dehalogenase a and the dehalogenase b exist at the same time, and then the 1, 2-DCA is instantly converted into ethylene by the dehalogenase, so that only a small amount or no toxic intermediate product 1, 2-DCA or VC is generated in the degradation process.

The invention belongs to the technical field of synthesis and preparation of organic polymer optical materials, and particularly relates to a cyclotrisulfide-tri (2-mercaptoethyl) thiol composition and a preparation method thereof. The preparation method comprises the following three steps: step 1, performing cyclization and vulcanization reaction on S8 and trichloroethane under the catalysis of aluminum chloride to generate 1, 3, 5-trichlorocyclotrisulfide; step 2, carrying out vinylation reaction on the 1, 3, 5-trichlorocyclotrisulfide and a vinyl magnesium bromide Grignard reagent to generate 1, 3, 5-trivinyl cyclotrisulfide; and 3, carrying out a photocatalytic addition reaction on the 1, 3, 5-trivinyl cyclotripolysulfide and 1, 2-ethanedithiol, and finally synthesizing the cyclotripolysulfide-tri (2-mercaptoethyl) thiol composition. The cyclotripolysulfide-tri (2-mercaptoethyl) mercaptan composition disclosed by the invention is high in transmittance and large in refractive index, and can be used for preparing a polythiocarbamate optical material with a high refractive index and high light transmittance.

The invention belongs to the technical field of organic synthesis, and particularly relates to a method for co-producing 1, 1, 2-trichloroethane and 1, 1, 2, 2-tetrachloroethane. The method comprises the following steps: enabling a dichloroethane solution containing an initiator to be in contact with chlorine, and carrying out chlorination reaction to generate 1, 1, 2-trichloroethane and 1, 1, 2, 2-tetrachloroethane. The method has the beneficial effects that the dichloroethane is used as the mother liquor, the initiator is dissolved in the dichloroethane to prepare the initiator solution, the chlorine is introduced into the initiator solution, and the trichloroethane and the tetrachloroethane are prepared through liquid-phase chlorination, so that the problems of non-uniform gas-phase feeding distribution, poor reaction effect and low yield are solved; the method is simple in reaction condition, mild and stable in reaction process and easy to control.

The invention relates to the field of environmental microbial remediation, in particular to a compound microorganism for degrading organochlorine pollutants and application of the compound microorganism. The compound microorganism is composed of a bacillus subtilis IAE strain (Geobacter lovleyi sp.strain IAE) and a dehalogenation coccus sp. Strain (Dehalococcoides mccaryi strain BAV1), and the compound microorganism is composed of a bacillus subtilis strain (Geobacter lovleyi sp.strain IAE) and a dehalogenation coccus sp. Strain (Dehalococcoides mccaryi strain BAV1); the preservation number of the bacillus subtilis is CGMCC (China General Microbiological Culture Collection Center) No: 1.5298. Aiming at soil and underground water polluted by high-concentration 1, 1, 2-trichloroethane, the compound bacterium completely degrades 1, 1, 2-trichloroethane into non-toxic ethylene through the synergistic effect of a double dechlorination reaction and a hydrogenolysis dechlorination reaction respectively driven by an IAE strain and a BAV1 strain.

The invention relates to the technical field of fine processing of shells, in particular to a multi-shell powder processing and impurity removing process which comprises the following steps: firstly, cleaning oyster shells twice with clear water, cutting the oyster shells into particles, soaking the particles with alkaline water, screening, and performing ozone oxidation to obtain refined shell particles A; then carrying out pelletizing, alkali soaking and ozone oxidation again to obtain refined shell particles B; and finally, carrying out wet grinding twice, calcining at high temperature and carrying out ultraviolet sterilization to obtain the shell powder. Secondary pelletizing, alkali soaking and ozone oxidation can enable the shells to be subjected to a finer physical and chemical separation process, so that impurities in the shell powder are more effectively removed; the ozone oxidation utilizes the strong oxidizing property of ozone to decompose dichlorodiphenyl trichloroethane, so that organochlorine pesticide residues such as dichlorodiphenyl trichloroethane in the shells are removed; the uniformity of the shell powder can be improved through two times of wet grinding, active ingredients in the shell powder can be better released, and the using effect is improved. The prepared shell powder is high in purity and has a wide application prospect.

The invention provides a preparation method of polymerized polyamine maleimide resin, and belongs to the technical field of high polymer materials. Comprising the following steps: 1) mixing maleic anhydride, a solvent and 1, 1, 2-trichloroethane; 2) mixing the polyphenyl polyamine, the solvent and the 1, 1, 2-trichloroethane; (3) dropwise adding the polyphenyl polyamine solution into the maleic anhydride solution to carry out amidation reaction; (4) adding a catalyst into an amidation reaction system, and heating to carry out cyclization dehydration reaction; 5) when the temperature of the cyclization dehydration reaction reaches 85-95 DEG C, carrying out gradient heating decompression dehydration and solvent reflux operation, and when the reaction material is in a homogeneous phase state, stopping the reaction and cooling; 6) washing and desolventizing the obtained cooled material to obtain the polymeric polyamine maleimide resin.The preparation method provided by the invention not only can reduce the reaction temperature, reduce the energy consumption and effectively reduce the occurrence of side reactions, but also enables the molecular weight distribution of the prepared product to be more concentrated.

The invention provides a process for manufacturing 1-chloro-2,2-difluoroethane (HCFC- 142) from 1,1,2-trichloroethane (HCC-140) and optionally, one or more of E / Z-1,2- dichloroethene (HCO-1130(E / Z)), E / Z-1-fluoro-2-chloroethene (HCFO-1131(E / Z)), and 1- fluoro-1,2-dichloroethane (HCFC-141). The invention also provides to a process for manufacturing a difluoroethyl derivative from HCFC-142 obtained using the process of the invention.

The invention discloses a method for recovering chlorine in trifluorotrichloroethane production, which comprises the following steps of: a, heating, gasifying and separating crude products, namely organic phases such as liquid chlorine, hydrogen fluoride, hydrogen chloride and trifluorotrichloroethane from an acidic material receiving tank, separating out acidic gases such as chlorine, and carrying out alkali washing on the separated trifluorotrichloroethane; b, cooling the separated acid gases such as chlorine and the like, and separating out uncondensed chlorine; c, fully mixing the separated chlorine gas with tetrachloroethylene; and d, feeding the chlorine-absorbed tetrachloroethylene into a fluorination reaction kettle to participate in the reaction. The method can effectively reduce the unit consumption of liquid chlorine and the consumption of liquid caustic soda.

The invention discloses a method for recycling high value-added substances (1, 1, 2-trichloroethane and TCE) from heavy component waste liquid generated in the VCM (vinyl chloride) generation process, which comprises the following steps: 1) carrying out pretreatment such as hydrogenation or chlorination on the heavy component waste liquid to remove impurities difficult to separate from the heavy component waste liquid; 2) removing high-boiling-point impurities difficult to separate, such as tar, coke and the like, in a novel supergravity rotary rectification manner or a manner of combining scraper solid removal with rectification; and 3) further rectifying and purifying the obtained crude product to obtain the product 1, 1, 2-trichloroethane. The method is simple in technological process, high in recovery rate, high in product purity and stable in device operation, impurities difficult to separate are removed and the technological process is simplified through a direct heavy component pretreatment mode, high-added-value utilization of waste materials can be achieved, economic benefits are generated, energy consumption and carbon emission of the device are reduced, and the method is a novel VCM heavy component recycling technology worthy of popularization.

The utility model belongs to the technical field of chemical production equipment, and relates to a fluorination reaction device for trichlorotrifluoroethane. The fluorination reaction device comprises a reactive distillation tower and a fluorination reaction kettle, the fluorination reaction kettle is connected with a hydrogen fluoride feeding pipe and a chlorine feeding pipe, a discharging pipeline is arranged between the fluorination reaction kettle and the reactive distillation tower, a backflow pipeline is arranged between the reactive distillation tower and the fluorination reaction kettle, the reactive distillation tower is further provided with a tetrachloroethylene feeding pipe, and the tetrachloroethylene feeding pipe is connected with a chlorine feeding pipe. And the joint of the discharge pipeline and the reactive distillation tower and the joint of the return pipeline and the reactive distillation tower are positioned below the tetrachloroethylene feed pipe. In the reaction process, a tetrachloroethylene raw material is conveyed into the reaction rectifying tower through the tetrachloroethylene feeding pipe and is in contact with high-temperature crude gas from the bottom of the reaction rectifying tower, and the tetrachloroethylene absorbs unreacted chlorine in the crude gas and returns the unreacted chlorine to the fluorination reaction kettle, so that the utilization rate of chlorine is increased, and the production cost is reduced. The chlorine content in the trifluorotrichloroethane crude product is reduced, and the consumption of alkali in subsequent alkali washing is reduced.

There is provided a method for producing 1-chloro-2,2-difluoroethane (HCFC-142) with less waste, the method including: (a) a step for reacting HCC-140 with hydrogen fluoride (HF) so as to provide a first composition that contains HCFC-142, hydrogen chloride (HCl), HF, and 1,2-dichloroethylene (HCO-1130); and (e) a step for chlorinating a composition containing HCO-1130, which is contained in the first composition, so as to change HCO-1130 into HCC-140, and subsequently recirculating the resultant composition to the step (a).

The invention provides a novel sucralose residue purification method, and belongs to the technical field of purification and impurity removal. The novel sucralose sugar residue purification method comprises the following steps: (1) removing ethyl acetate in mother liquor sugar residues, then carrying out reduced pressure distillation, and then cooling to obtain treated sugar residues; (2) adding thionyl chloride into the candy pomace obtained in the step (1), and converting unstable sucralose dichloro ester in the candy pomace into stable sucralose trichloro ester; and (3) adding trichloroethane into the sucralose trichloro ester to extract and remove impurities, and extracting and removing the trichloroethane at the lower part to obtain a finished product at the upper layer. By adopting the method provided by the invention, the recovery rate of sucralose can be improved, the production cost is reduced, the yield of a finished product is about 85-89%, and the purity is 96-98%; in the implementation process, the production process is optimized, waste liquid discharge is reduced, and environmental friendliness and scientificity are achieved.

The invention belongs to the technical field of non-destructive inspection, and discloses a fuel oil non-destructive inspection agent and a preparation method thereof, the fuel oil non-destructive inspection agent material comprises an activation adsorbent, a dispersant, a surfactant and a propellant; the ratio of the activated adsorbent to the dispersing agent to the surfactant to the propellant is 58: 240: 2: 200. The activation adsorbent is talcum powder; the surfactant is DuPont FSN-100 (Fractional Sensitive Number) The dispersing agent is a mixed solution of mineral oil, trichloroethane, nitromethane and acetonitrile according to a mixing ratio of 30: 60: 5: 5; the propellant is tetrafluoroethane, and the addition amount is 200g. The fuel oil nondestructive flaw detection agent provided by the invention is simple in use process, only the surface needs to be wiped dry with cloth, the flaw detection agent is directly applied, and leakage detection is completed in one step by only using the flaw detection agent; the flaw detection agent is simple and convenient to operate, is directly shown, is non-flammable, has excellent comprehensive performance, can quickly and sensitively detect tiny leakage, does not cause any damage to a unit by using the flaw detection agent, and does not need equipment such as a power supply and a black light lamp.

The application discloses a room-temperature quick-drying type lubricating wear-resistant corrosion-resistant function integrated coating, a coating and a preparation method. The function integrated coating comprises the following raw materials in mass fractions: 8-14 parts of mixed resin; 7-13 parts of lubricating filler; 0.5-1.5 parts of reinforcing filler; and 70-80 parts of dispersion medium. The mixed resin is a combination of polyether sulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin, or a combination of polyether sulfone resin, acrylic resin and polyurethane resin; the lubricating filler is a combination of polytetrafluoroethylene and molybdenum disulfide; the reinforcing filler is a combination of nano lanthanum trifluoride and nano cerium oxide; and the dispersion medium is a mixture of trichloromethane and trichloroethane. The coating has the functions of lubrication, wear resistance, corrosion resistance, weather resistance, mold resistance and the like, the salt mist resistance is improved to 240 hours or more, and the wear life is greater than or equal to 60 minutes and the friction coefficient is less than or equal to 0.15 under the conditions of high load and high speed.

The present invention is directed to systems and methods for removing trichloroethane (TCA), trichloroethene (TCE), and 1,4-dioxane (1,4-D) from contaminated water and wastewater. The system and methods relying on catalyst reduction of TCA and TCE, and the reduced products are degraded by microorganisms that are capable of biodegrading ethane and 1,4-D. In certain embodiments, a catalyst film comprises precious nanoparticles with diameters of 5-40 nm and a biofilm comprising microorganisms that are capable of degrading ethane and 1,4-D are used in a dual-reactor system to remove TCA, TCE, and 1,4-D from contaminated water and wastewater.