14 results about "Heptane" patented technology

The invention refers to the method for producing gasolines or aromatic compound concentrates, where three streams are used as feedstock, one of which includes hydrocarbon fraction, the second stream includes oxygenate, the third stream includes olefin-containing fraction with one or more olefins selected from the group consisting of ethylene, propylene, normal butylenes, isobutylene, in total from 10 to 50 wt %, and where three reaction zones filled with zeolite catalyst are used, with distribution of hydrocarbon fraction and oxygenate to the first reaction zone, and with olefin-containing fraction distributed over the three reaction zones, with the third stream mass fraction distributed to the final reaction zone higher than the mass fraction of the third stream distributed to each of the previous reaction zones. This method allows to increase the yield of C5+ hydrocarbons, enhance n-hexane and n-heptane conversion, reduce benzene content in the product, avoid recycling of gaseous products and decrease consumption of oxygenates. 1 independent claim and 35 dependent claims in the formula, 12 examples, 7 tables.

Systems and methods are provided for integrated coking and gasification of a biomass feed in a three-vessel fluidized coking system under co-processing conditions so that biomass is co-fed with a conventional and / or mineral coker feed, such as a feed containing resid or heavy crude oil. It has been discovered that co-processing of a biomass feed can unexpectedly increase the reaction rate for coking of the conventional / mineral coker feed. This unexpected increase in reaction rate can allow for modification of how the three-vessel fluidized coking reaction system is operated. The resulting modification in operating conditions can allow for production of a modified and / or improved product slate from the fluidized coker. The modifications in the product slate can include an increase in total liquid products as well as a decrease in micro carbon residue and / or n-heptane insolubles in the total liquid products.

The application discloses a processing method and a reaction system for inferior heavy oil, and the method comprises the following steps: (1) inferior heavy oil is contacted with a solvent to perform solvent extraction, and an extracted liquid is obtained; after solvent recovery, an extracted oil is obtained; the obtained raffinate is subjected to stripping desolventization to obtain raffinate oil; (2) the extracted oil is further separated into a gasoline fraction, a diesel fraction and a hydrogenated tail oil after being subjected to hydrotreatment, wherein the hydrogenated tail oil is used as catalytic cracking device feed; (3) the raffinate oil and catalytic cracking slurry are mixed and then used as a gas-making raw material to enter a POX gas-making unit to obtain hydrogen or synthesis gas; and the solvent is selected from one or a mixture of several of pentane, hexane, heptane and naphtha. The method and the reaction system can yield more light oil products and chemical materials, reduce the harshness of heavy oil deep processing device operation, prolong the service life of a catalyst and the operation cycle of a device, and realize the purposes of full processing conversion of the heavy oil and zero discharge of the heavy oil.

The present application relates to a method for determining the content of impurity aluminum element in fat emulsion injection by high performance liquid chromatography. 9 mL of test sample and 1 mL of acid reagent are precisely added, heated at 80 DEG C for 30 min in a graphite digestion instrument, then heated at 100 DEG C for 1 h, the obtained product is concentrated at 120 DEG C, cooled, transferred with purified water and diluted to 10 mL, 3 mL of n-heptane is added for extraction, the solution is separated into two layers by standing, the water phase is filtered, and the filtrate is obtained as a test sample solution. 0.1 mL of aluminum element series control solution, blank control solution, test sample solution and blank test sample solution are precisely taken respectively, 0.9 mL of derivative reagent is precisely added, mixed, then injected into a liquid chromatograph respectively, and the chromatogram is recorded. The method of the present application selects a suitable demulsification acid solvent to destroy the structure of fat emulsion oil-in-water, release the wrapped impurity aluminum element, and obtain a clear solution at the same time, which meets the requirements of high performance liquid chromatography injection.

This invention discloses a method for preparing coal-based high-density fuels, including adamantane fuels and branched polycyclic cyclic alkanes (PCALs), addressing the problems of limited preparation pathways, limited raw materials, poor low-temperature performance of some PCALs, and low catalyst efficiency in existing related fuels. This invention uses a variety of widely available PCALs and PCALs as raw materials, including non-fused-ring PCALs, non-fused-ring PCALs, and PCALs containing bicyclic [2.2.1]heptane substituents, employing AlCl3 or aluminochlorochlorohydrate ionic liquids as isomerization rearrangement catalysts. Molecular structure is controlled through directional isomerization rearrangement reactions, optimizing fuel cohesion and configuration. This method significantly expands raw material sources, increases the yield of target products, shortens reaction time, reduces reaction temperature and cost, and improves the low-temperature performance of raw materials, producing high-density, high thermal oxidation stability, low viscosity, and low freezing point high-performance fuels, laying the foundation for their large-scale production and industrial application.

The application discloses a kind of self-ignition temperature step prediction method, system and medium, prediction method includes: judge whether the environment where positive standard fuel is there is droplet evaporation: if there is no droplet evaporation: collect gas phase temperature, pressure, equivalence ratio and n-heptane concentration proportion data, equivalence ratio and n-heptane concentration proportion are calculated to obtain the slope of initial temperature, based on pressure and n-heptane concentration proportion, cross temperature is calculated, so as to be based on gas phase temperature, the slope of initial temperature and cross temperature calculation obtains first temperature step;If there is droplet evaporation: collect gas phase temperature, pressure, equivalence ratio, droplet diameter and and liquid phase n-heptane concentration proportion data to calculate first temperature step.The application can predict the first stage temperature growth under different temperature, pressure, equivalence ratio, droplet diameter and n-heptane concentration condition, and prediction accuracy is good, both applicable to pure gas phase situation also applicable to have droplet evaporation situation, and simple operation.

The utility model relates to the technical field of n-heptane production equipment, in particular to a high-purity n-heptane precise separation device which comprises a rectifying tower, a movable assembly and a filtering assembly, the movable assembly is arranged in the rectifying tower and is used for utilizing and transmitting kinetic energy of steam in the rectifying process and carrying out precise separation of n-heptane in cooperation with the filtering assembly; the filtering assembly is arranged on one side of the movable assembly and used for receiving kinetic energy of the movable assembly, adhesion and attachment of impurities generated on the filtering assembly are avoided, and meanwhile the rectification reaction of internal n-heptane is promoted. Compared with the prior art, the problems that in the prior art, the energy utilization rate is low, and impurity adhesion is serious are solved.

The present invention relates to the corona discharge-induced cracking of hydrogen-containing gas into molecular hydrogen and at least one by-product, or the production of molecular hydrogen and at least one by-product, or the production of downstream products from the molecular hydrogen and / or the at least one by-product. To this end, hydrogen-containing gas is fed via a gas supply line into a gas-tight reaction chamber with exactly one plasma electrode. The gas-tight reaction chamber is enclosed by a wall that is designed to electrically insulate the plasma electrode from an outside of the wall. The plasma electrode is connected to a high-frequency generator that provides high-frequency alternating voltage and generates corona discharges in the reaction chamber by means of the high-frequency alternating voltage. This results in the cracking of hydrogen-containing gas into molecular hydrogen and at least one by-product. The molecular hydrogen is discharged from the reaction chamber via a gas discharge line. The hydrogen-containing gas can contain, for example, methane, biogas, natural gas, hydrogen sulfide, or cyclohexane, heptane, toluene, gasoline, JP-8, or diesel that have been converted into the gaseous aggregate state.

The utility model relates to the technical field of fixing devices, in particular to a heptane storage tank fixing device which comprises a movable vertical frame, a surrounding support, a first clamping assembly, a second clamping assembly and a lifting assembly. A front wheel assembly and a rear wheel assembly are arranged at the two ends of the bottom of the movable vertical frame correspondingly. The surrounding support is movably connected to the movable vertical frame. The first clamping assembly and the second clamping assembly are connected to the inner walls of the two sides of the surrounding support correspondingly. The lifting assembly is used for driving the surrounding support to ascend and descend, and the lifting assembly is connected to the movable vertical frame. The heptane storage tank fixing device is convenient to move and good in fixing effect.

The invention relates to an NO gas-sensitive material, a preparation method thereof and application of the NO gas-sensitive material in a sensor, and belongs to the technical field of gas sensing. The NO gas sensitive material is metal-doped tungsten trioxide, and the metal doping amount in the NO gas sensitive material is 1-5 mol%; the metal is In, Nb, V and Ta. Tungsten hexachloride, n-heptane and metal chloride are mixed to prepare a mixed solution; carrying out heating reaction on the mixed solution to obtain a coarse precipitate, and centrifuging and washing the coarse precipitate to obtain a fine precipitate; and drying, grinding and calcining the fine precipitate to obtain the NO gas-sensitive material. The preparation method of the NO gas-sensitive material is simple and has controllability and repeatability, the NO gas-sensitive material shows excellent response sensitivity when being used for the NO gas sensor, and the NO gas-sensitive material has the advantages of accurate response sensitivity, gas interference resistance, long-term use stability and the like when being applied to the NO gas sensor based on a temperature modulation detection method; the device is especially suitable for detecting NO gas exhaled by a human body.

The present invention relates to the technical field of coal processing, and provides a chlorine-containing coal dechlorination method, which comprises: S1, mixing chlorine-containing coal powder and water, and drying to obtain chlorine-containing coal powder A; s2, mixing the chlorine-containing pulverized coal A with the eluent, separating to obtain filter residues, and drying to obtain dechlorinated pulverized coal; the eluent comprises a mixed solution of n-heptane, sulfolane and acetone in a volume ratio of (3-6): 2: 3. By means of the technical scheme, the problem that the chlorine element removal rate is low when chlorine-containing coal is subjected to dechlorination in the prior art is solved.

A fire-fighting composition and method of manufacture of the same has been disclosed herewith. The composition comprises a natural gum, glycol ether, sodium lauryl sulfate, other anionic surfactant(s), non-ionic surfactant(s), and many other propriety components. The resultant composition passed in-house tests—measuring cylinder test, torch test and hot heptane test. The composition does not contain any fluorinated surfactant or compounds. When diluted at 3% concentration, the solution produces satisfactory quantity of foam under pressure to extinguish fire.

The invention discloses a critical temperature judgment and risk early warning method for electric heating coking of thickened oil in an oxygen-free environment, which comprises the following steps: simulating a high-temperature and high-pressure oxygen-free environment of an oil reservoir, and carrying out stepped temperature programming on a thickened oil sample; in the step type temperature programming process, synchronously monitoring the weight loss ratio change and the heptane insoluble substance content of the thickened oil sample; determining the initial coking temperature by taking the change of the weight loss ratio and the content of heptane insoluble substances as a combined judgment standard; and establishing a coking risk early warning model based on the coking initial critical temperature, and implementing a grading prevention and control strategy according to the coking risk early warning model. By establishing a two-parameter simultaneous measurement mechanism and a coking risk index model, accurate judgment of the coking initial temperature, advanced early warning of the coking risk and automatic power regulation and control in the thick oil electric heating process are achieved, the principle is reliable, operation is easy, adaptability is high, and the method is suitable for safety control over thick oil electric heating exploitation and has good application prospects. Wide market application prospects are realized.