52 results about "BTEX" patented technology

Volatile organic compounds (VOCs), such as BTEX methanol and other non-phase separable hydrocarbons may be removed from wastewater obtained from oil or gas exploration or production operations by way of a bioreactor. The bioreactor may employ anaerobic microorganisms that metabolize various VOCs. In some embodiments, such a bioreactor may be configured to treat process flow rates of thousands of barrels of wastewater per hour. Such a bioreactor may comprise a large vessel at a larger water treatment site.

An enrichment apparatus and process for enriching a hydrogen sulfide concentration in an acid gas stream to create a hydrogen sulfide rich stream for feed to a Claus. The enrichment apparatus comprises a hydrocarbon selective separation unit operable to separate the acid gas stream into a hydrocarbon rich stream and a purified acid gas stream, wherein the acid gas stream comprises hydrogen sulfide, carbon dioxide, and hydrocarbons, a hydrogen sulfide selective separation unit operable to separate the purified acid gas stream to create the hydrogen sulfide rich stream and a hydrogen sulfide lean stream, the hydrogen sulfide rich stream having a concentration of hydrogen sulfide, and the Claus unit operable to recover sulfur from the carbon dioxide lean stream. The enrichment apparatus can include a carbon dioxide selective separation unit in fluid communication with the hydrogen sulfide selective separation unit, operable to separate the hydrogen sulfide rich stream.

The invention discloses a method for measuring the benzene and BTEX content of polypropylene fiber bundles and filter rods of cigarettes, which comprises the steps of preparation of internal standard extraction liquid, standard working solution and sample solution, gas chromatography-mass spectrometry, calculation of measurement results and the like. The measurement method, which is improved and optimized, has the advantages of simple and accurate operation, high sensitivity, high recovery rate, high repeatability and the like. The method of the invention has the advantages that: the quantityis fixed according to internal standards, so errors caused by pretreatment or the precision of instruments are reduced effectively; the adopted chromatographic conditions ensure high separation degrees and high linear correlation of both six target compounds and internal standard chromatographic peaks, and the detection limit is between 0.01 and 0.02mu g / g; and the sample recovery rate is between95 and 101 percent and the average relative standard deviation is between 4.1 and 5.0.

The invented method used BTEX in sea-bottom shallow-layer sediment as geochemical mark of hydrocarbon reservoir, and utilizes the equipments of purging trapping apparatus, gas chromatograph with photo ionization detector and computer, etc. and adopts the techniques of sample pretreatment, separation, identification and high-sensibility measurement so as to predicate the deep hydrocarbon reservoir. Said invention also provides the working principle of said method and its concrete working steps.

An off-gas flare system for disposing of a waste gas stream containing BTEX and VOC contaminants, and for safely handling slugs of excess liquids entrained in the waste gas stream. The flare system includes a flare stack, an enclosed steam tank disposed within the flare stack for receiving the waste gas stream and vaporizing any liquids in the waste gas stream into vapors, and an enclosed liquid tank disposed below the steam tank and in fluid communication with the steam tank for receiving the heated waste gas and liquid vapors and for temporarily containing any excess non-vaporized liquids. The flare also includes a waste gas burner disposed in the flare stack adjacent the steam tank and in fluid communication with the liquid tank, and a continuous means for igniting the waste gas burner.

The invention discloses absorption liquid for treating benzene series organic waste gas and a preparation method of the absorption liquid for treating the benzene series organic waste gas. The absorption liquid is composed of the following raw materials in percentage by mass: 85.6%-97.8% of water, 1.5%-12.5% of carbonate, 0.01%-5% of an addition agent and 0.1%-7% of a dispersant. The preparation method comprises the following steps: dissolving the carbonate into the water according to the mass percent to prepare a solution; and adding the addition agent and the dispersant into the solution to obtain the absorption liquid of the benzene series organic waste gas. The absorption liquid mainly comprises the water, inorganic salt, the addition agent and the dispersant, and has the advantages of wide sources, low price, simplicity in preparation, no corrosion effect on equipment and no secondary pollution; the absorption liquid has the high removing rate on the benzene series organic waste gas with middle and low concentrations and the high removing rate can be more than 75%; the absorption liquid is a water solution of the inorganic salt and has the low viscosity and the small foaming amount; the energy consumption of a circulating pump is low; and meanwhile, wastewater is easy to treat.

Methods for identifying hydrocarbon contamination sources may include fingerprinting hydrocarbons using isotopocule analyses for BTEX compounds. For example, methods for identifying hydrocarbon contamination sources may comprise: extracting BTEX compounds from a sample; measuring the isotopocule composition of the BTEX compounds; and determining a characteristic of the sample based on the isotopocule composition. Such characteristics may include, but are not limited to, the characteristic of the sample comprises one or more selected from the group consisting of: a source of the sample, a condition at which the sample formed or was last equilibrated, a migration time from a source to a sample location, weathering of the sample, and degree to which the sample is anthropogenic and naturally-occurring.

The invention relates to the field of biotechnology and environmental protection, in particular to a microbial inoculant, and particularly relates to a complex microbial inoculant for petroleum hydrocarbon and benzene series treatment as well as a preparation method and application thereof. The active ingredients of the complex microbial inoculant comprise aspergillus oryzae, streptomyces, pseudomonas putida, pseudomonas alcaligenes, brevibacterium epidermidis and Erwinia; and the complex microbial inoculant is especially suitable for treating soil polluted by petroleum hydrocarbon and benzeneseries. After the complex microbial inoculant disclosed by the invention is added into the soil polluted by the petroleum hydrocarbon and benzene series, indigenous degrading flora can be rapidly propagated, and the remediation process can be rapidly started; in the repairing process, the indigenous degrading bacteria are always in the dominant flora status, and high degradation efficiency is kept for a long time through the synergistic cooperation of the flora in the complex microbial inoculant; and finally, the polluted soil is completely repaired, the degradation rate of petroleum hydrocarbon and benzene series is high, and the removal rate of BTEX and TPH can reach 98% or above.

The deposition of organic materials originating from crude oil, such as asphaltenes and paraffins, is deemed to compromise satisfactory oil exploration and production, because it clogs pores and equipment, compromising the operation performance. This problem may arise at various points during the operations of drilling, stimulating, fracturing, completing and cementing wells, production, transportation, refining and storage of oil and derivatives, including the use of the fluid in treatments for oil wells and reservoirs, well tubing and annuli, tubing, equipment, and tanks used in treatment processes, transportation and refining of oil and derivatives thereof. The present invention relates to a solvent composition to solubilize such deposits and incrustations. The solvents used in the present invention have a high capacity to solubilize the molecules of asphaltenes and paraffins, forming sufficiently fluid and stable solutions, which allow the use of this composition for the removal of organic deposits in the oil industry. Due to its good performance in the solubilization of deposits and incrustations and, especially, due to the biodegradable nature and superior toxicological profile, the alternatives described in the present invention can replace compositions containing benzene, toluene, ethylbenzene, and xylene (products commonly denoted as “BTEX”), diesel, kerosene, or other solvents and complex formulations used in the oil industry.

The invention relates to a divalent metal-base MIL-53 microporous material, and a preparation method and application thereof. The chemical composition of the microporous material is [Mn2(BDC)2(bpdo).(DMF)2]infinity, wherein, the BDC is terephthalic acid, the bpdo is 4,4'-bipyridine nitrogen oxide, and the DMF is N,N'-dimethylformamide. The preparation method of the microporous material comprises the following steps: S1, dissolving an Mn(NO3)2 solution, the terephthalic acid H2BDC and the bpdo in a solvent by mixing and stirring, carrying out heating for a reaction for 10-12 hours at a temperature of 120-150 DEG C in a closed environment, and carrying out cooling, filtering and drying; and S2, heating the reaction product obtained in the step S1 at an oil bath temperature of 150-160 DEG C under a vacuum condition for 6-8 hours to obtain the divalent metal-base MIL-53 microporous material. The microporous material provided by the invention is suitable for adsorbing a small amount or trace amount of benzene, toluene, ethylbenzene, and xylene (BTEX) residues in water and air in the environment. The preparation method provided by the invention is simple in steps, low in raw material cost and high in repeatability, and can be used to realize batch preparation.

A stainless steel wire may be platinized using electrophoretic deposition (EPD) method and then may be coated by polyaniline / multiwalled carbon nanotube (PANI / MWCNT) nanocomposite by electrochemical polymerization (EP). The resulting fiber may be used for headspace solid-phase microextraction (HS-SPME) of residual solvents (benzene, toluene, ethylbenzene and xylene, BTEX) in commercial pharmaceutical drugs, followed by gas chromatography-flame ionization detection (GC-FID).

The invention discloses a macroporous spherical composite-material catalyst for removing benzene compounds in air and a preparation method and belongs to catalysts for catalyzing and purifying the pollution of the benzene compounds and preparation. The catalyst is made of loose and porous 2-5mm spherical particles formed by partly-burned macroporous resin, noble metal and metal oxide, and the surface and porous channels of the catalyst are internally filled with carbon-modified noble metal-oxide. The preparation comprises the following steps: exchanging ions in the channels, adhering the noble-metal ions, preparing the oxide into slurry, rolling-painting the slurry on the resin, then rolling-covering noble-metal nano particles, volatilizing and burning the resin by heat treatment, and obtaining the macroporous spherical composite-material catalyst. The catalyst can be placed into a gas chamber with a separating net, and by pumping gas needing to be purified, the particles flow to contact with the gas, and the contact area is large, and the particles cannot be blown into the gas chamber, and the catalyst has great practicability.

The present invention is directed toward a bioremediation product, its method of manufacture and method of use. A blend of microorganisms, cleansers and surfactants is disclosed which is non-toxic and solvent free, and which has the ability to accelerate the breaking down process of oils, materials such as benzene, toluene, and xylene (BTEX); petroleum hydrocarbon fractions F1-F4 (as defined by CCME2000), polycyclic aromatic hydrocarbons (PAH), paraffin waxes, volatile organics, molds, and the like; while simultaneously providing a biological component which is effective to reduce the total petroleum hydrocarbon levels to zero at an accelerated rate. The product is useful for bioremediation and as an oil dispersant composition useful in treating oil spills, and for cleanup of the shoreline, animals, plants, and equipment.