66 results about "Light hydrocarbons" patented technology

The present application relates to the technical fields of chemical synthesis, and discloses a kind of aviation kerosene production process and equipment, production process includes: carbon source gas, hydrogen, circulating gas is sent into main reactor reaction and obtains including hydrocarbon, methanol, CO, water and unreacted gas mixed component a;Mixed component a is sent into cascade reactor and is prepared to obtain including aviation kerosene component, light hydrocarbon component and water mixed component b, wherein light hydrocarbon component includes one or more of C2-C7 light hydrocarbon;Mixed component b is fractionally condensed to collect liquid phase and gas phase, and liquid phase is carried out three-phase separation to obtain aviation kerosene component, light hydrocarbon component and water respectively, aviation kerosene component is hydrotreated, fractionation to obtain aviation kerosene.The present application realizes the step-by-step control of reaction path in carbon source hydrogenation process through the synergistic effect of main reactor and cascade reactor, improves the selectivity of aviation kerosene target product, so that the obtained product meets the 3# aviation kerosene standard requirements in key indicators such as distillation range distribution, aromatic content and low temperature performance.

The application discloses a method for judging the extension of the oil reservoir swept range of a microbial polymer system, and the steps are as follows: (1) taking the oil well samples in the oil reservoir before and after the microbial polymer flooding to perform the whole hydrocarbon gas chromatographic analysis of crude oil, and determining the small molecular weight light hydrocarbon marker component reflecting the change rule of the crude oil composition; (2) comparing the chromatographic peak area of the small molecular weight light hydrocarbon marker component with the chromatographic peak area of the high molecular weight carbon number, and obtaining the parameter for characterizing the effective action of the microbial polymer; (3) comparing and analyzing the crude oil samples in the oil well before and after the parameter for characterizing the effective action of the microbial polymer, and determining the swept degree of the oil reservoir by the microbial polymer. The application discloses the application of the above method in the microbial oil production for judging the swept volume of the microbial polymer in the oil reservoir.

This invention belongs to the field of energy catalysis technology and discloses a photothermal coupled ethane oxygen-free dehydrogenation catalyst, its preparation method, and its application. The invention constructs a dual-active-site catalytic system by impregnating and calcining followed by hydrolysis under alkaline conditions, synergistically loading a first and a second co-catalyst metal onto a titanium dioxide substrate in single-atom form. This photothermal coupled ethane oxygen-free dehydrogenation catalyst significantly improves the separation efficiency of photogenerated charges and enhances light absorption capacity. It achieves extremely high ethylene yield and selectivity at lower temperatures and exhibits excellent long-term reaction stability, possessing significant industrial application value for the utilization of light hydrocarbon resources.

A non-oxidative conversion process includes processing a light hydrocarbon feed stream comprising C1 to C3 alkanes in a reactor under catalytic cracking conditions including a temperature of about 850° C. and up to 1020° C. and a residence time of from about 1 second to about 15 seconds in the presence of a catalytic cracking catalyst, thereby producing a product effluent stream comprising a C2 to C10 hydrocarbon product and hydrogen. The product effluent stream contains less than or equal to about 6.5 wt. % of acetylene.

The application discloses a method for extracting helium from low-helium-containing natural gas and co-producing ethane, relates to the technical field of helium extraction from natural gas, and specifically relates to a method for extracting helium from low-helium-containing natural gas and co-producing ethane, which comprises the following steps: raw gas decarburization: CO2 in pressurized raw gas is absorbed by activated MDEA solution, and the CO2 content is removed to below 50 ppm; raw gas dehydration and mercury removal: dehydration and mercury removal are performed by using a three-tower isobaric molecular sieve dehydration and mercury removal process, and a purified gas with a water content of less than or equal to 1 ppm and a mercury content of less than 0.01 mu g / m3 is obtained; natural gas helium extraction. The application adopts three external mixed refrigerant refrigeration cycle systems such as a mixed refrigerant precooling process without expansion refrigeration, the system has rich regulation means, can provide matched cold energy for a crude helium extraction process, is flexible in operation, and is good in adaptability to raw materials; the natural gas helium extraction is simultaneously used for co-producing ethane and other light hydrocarbon products, and the energy consumption of a demethanizer gradient multi-stream side line extraction process device is greatly reduced.

The utility model discloses a system for increasing yield of light hydrocarbon by recovering hydrogen through a membrane method. The system comprises a heater, a membrane separator, a water cooler, a gas-gas heat exchanger, a condenser and a gas-liquid separator which are connected in sequence, a raw material gas pipeline is arranged at one end of the heater; a hydrogen product pipeline is arranged on the membrane separator; a light hydrocarbon product pipeline is arranged at one end of the gas-liquid separator. According to the application, the high-temperature-resistant membrane separator is used for recovering hydrogen on the permeation side, and meanwhile, a hydrocarbon dew point as high as possible is obtained on the non-permeation side, and when the hydrocarbon dew point is higher, the condensation recovery rate of downstream light hydrocarbon is higher; meanwhile, the high-efficiency recycling rate of hydrogen and light hydrocarbon is realized. In addition, the gas-gas heat exchanger arranged in the system can recycle cold energy, the load of the condenser and the use amount of the refrigerant are reduced, and therefore energy consumption is further reduced.

This invention belongs to the field of oil refining and chemical engineering, and discloses a saturated light hydrocarbon recovery and purification system and method. The method includes: recovering mercaptan-containing product gas from refinery process feedstock treated with MDEA using an absorption-desorption method; optionally, the method further includes removing mercaptan from the mercaptan-containing product gas; the mercaptan-containing product gas is mercaptan-containing C2 enrichment gas and / or mercaptan-containing crude liquefied petroleum gas; the refinery process feedstock includes refinery rich gas feed and crude hydrocarbon feed. When recovering C2 as a feedstock for ethylene cracking, this invention can remove only hydrogen sulfide and carbon dioxide from the recovered product without removing mercaptan, thus meeting the purity and mercaptan content requirements of the recovered product, reducing repeated desulfurization and sulfur injection processes in the ethylene cracking process, and lowering investment and energy consumption.

The present invention relates to a liquid formulation comprising an amount greater than or equal to 50% by weight of benzyl toluene and an amount less than or equal to 10 ppm by weight of at least one hydrocarbon having a molar mass less than or equal to 100 g mol−1. The invention also relates to the use of said formulation, comprising an amount less than or equal to 10 ppm by weight of light hydrocarbon, as LOHC for producing hydrogen.

A method and device for optimizing parameters of a system for processing associated gas, the method comprising: constructing an associated gas processing simulation model of the system for processing associated gas, the model comprising at least an air cooler module, a water cooler module and an ammonia refrigeration module connected in sequence, the ammonia refrigeration module comprising at least a compressor submodule and a reboiler submodule; setting N combinations of operating parameters for the simulation model; obtaining a set of yield and energy consumption data corresponding to each combination of operating parameters; calculating a corresponding revenue value A n from each set of yield and energy consumption data, each set of yield and energy consumption data comprising light hydrocarbon yield, fuel consumption and power consumption of the air cooler module, the water cooler module and the compressor submodule, obtaining a maximum revenue value from the N values A n , and taking the corresponding combination of operating parameters as the optimal operating parameters of the system for processing associated gas; and analyzing the associated gas processing simulation model in combination with the light hydrocarbon yield, fuel consumption and power consumption to ensure maximum economic benefit while saving energy and reducing costs.

The utility model relates to natural gas component separation technical field, specifically disclose a kind of natural gas component separation system, including normal temperature compressor, the normal temperature compressor is oil-free centrifugal compressor, normal temperature compressor uses gas bearing support, the outlet end of normal temperature compressor is connected cooler inlet by pipeline, the cooler connection outlet is connected with No. 1 gas-liquid separator inlet, the liquid outlet of No. 1 gas-liquid separator is connected with heavy hydrocarbon storage tank, the gas outlet of No. 1 gas-liquid separator is connected with the inlet of No. 1 three-way valve.This natural gas component separation system sets multiple gas-liquid separators, can be separated heavy hydrocarbon, light hydrocarbon, LNG, liquid neon, liquid hydrogen, liquid helium and other multiple components in turn according to the different boiling point of gas, and store them in corresponding storage tank respectively, realize the efficient separation and recycling of multiple valuable components in natural gas.

This invention discloses a liquefied petroleum gas (LPG) hydrotreating process for olefin removal and desulfurization. The feedstock consists of one or more types of LPG derived from refinery catalytic cracking, coking, or other units, as well as light hydrocarbons derived from oil and gas fields. After removing hydrogen sulfide from the LPG in a desulfurization tower, the feedstock is pressurized by a feed pump, mixed with hydrogen, and then heated and vaporized in a heat exchanger and furnace. It then enters a hydrorefining reactor for olefin saturation, removal of mercaptans and other impurities, and then enters a desulfurization reactor to remove hydrogen sulfide generated during the hydrotreating reaction. The refined desulfurized LPG is then cooled by heat exchange and enters a low-pressure separator. The refined LPG after gas-liquid separation is sent to a LPG separation unit. This process yields refined LPG products with low olefin and low sulfur content.

The utility model discloses a light hydrocarbon filtering device, including filter structure, shunt structure, switching structure and filter sand structure, filter structure has the cavity and the feed port of intercommunication cavity, shunt structure is located at the cavity, and the cavity is spaced as feed chamber and filter sand chamber, and has multiple groups of flow channel that links through filter chamber and filter sand chamber, and each group's flow channel is equipped with a plurality, and the feed chamber is communicated feed port, switching structure is movably arranged in shunt structure, and when moving, can open each group's flow channel in turn, and when opening one group's flow channel, closes other group's flow channel, and filter sand structure is arranged in filter sand chamber. The scheme has effectively prolonged the filtration cycle of light hydrocarbon filtering device, alleviated the burden of operating personnel maintenance filter sand structure, and ensured the filtration effect.

1. The name of the design product: light hydrocarbon quantitative loading pry. 2. The use of the design product: for light hydrocarbon quantitative loading. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application discloses a light hydrocarbon gas production system, which comprises a liquid storage tank, a gas storage tank, an air compressor, a drying cavity, a heat exchanger and a gas-liquid separation tank. Liquid fuel is heated and gasified by hot air in the heat exchanger, and is mixed with cooled air to form gasified fuel. The energy in the hot air generated by the air compressor of the production equipment in the workshop is fully utilized, and the cost is effectively reduced.

This invention discloses a liquefied petroleum gas (LPG) hydrodeolefins desulfurization process. The raw materials are one or more types of LPG derived from refinery catalytic cracking, coking, and other units, as well as light hydrocarbons derived from oil and gas fields. The incoming LPG is pressurized and mixed with hydrogen, then heated and vaporized before entering the hydrorefining reactor. The high-temperature gaseous hydrorefining reaction product enters the desulfurization reactor for fine desulfurization. The reaction effluent after fine desulfurization is heat-exchanged and cooled before entering a low-pressure separator. The low-pressure separator generates a low-density gas at the top, which is pressurized and mixed with fresh hydrogen from outside the unit to form mixed hydrogen. The refined LPG at the bottom of the low-pressure separator is pressurized and sent to the gas separation unit.

A pyrolysis apparatus, method, and system for loss recovery and correction of light hydrocarbons in mud shale are provided. The pyrolysis apparatus has a pyrolysis tank for accommodating and heating a full-diameter core sample, an input pipeline and an output pipeline being respectively arranged at two opposite ends of the pyrolysis tank, and a flow divider assembly being arranged on the output pipeline, forming a first branch pipeline and a second branch pipeline; a carrier gas assembly in communication with the input pipeline; and a detection assembly, comprising a first detection unit for quantitative detection and a second detection unit for qualitative detection, which are connected to the first branch pipeline and the second branch pipeline, respectively. The pyrolysis apparatus, method, and system for loss recovery and correction of light hydrocarbons in mud shale carry out on-site pyrolysis of full-diameter core.

This invention discloses a system and method for removing light hydrocarbons in the production of alkylate oil using the sulfuric acid process, relating to the field of sulfuric acid process alkylate oil production technology. The system for removing light hydrocarbons in the sulfuric acid process alkylate oil production of this invention includes: an alkylation reactor, a flash evaporator for the reaction products, a deacidification system for the reaction products, a deisobutane removal tower, and a light hydrocarbon removal tower. The top outlet of the deisobutane removal tower is connected to a cooler, and the cooler outlet pipeline is divided into three branches: one branch returns to the upper part of the deisobutane removal tower; one branch merges with the outlet pipeline of the light hydrocarbon removal tower and connects to the outlet pipeline of the alkylation reactor; and one branch connects to the middle part of the light hydrocarbon removal tower. This invention can remove light hydrocarbons below C4 from the reaction system and produce liquefied petroleum gas (LPG) without adding deacidification facilities, reducing the unit's energy consumption by more than 8 kg EO / t alkylate oil.

The utility model discloses a kind of gas-liquid separation structure and light hydrocarbon gas generating device, gas-liquid separation structure includes gas-liquid separator and purging mechanism, separation cavity and multiple discharge straight cavities being communicated with the discharge end of the separation cavity are formed inside gas-liquid separator, the discharge end of the separation cavity is configured to be communicated with the discharge end of generating tank, inverted cone-shaped boss, gas phase outlet through inverted cone-shaped boss and liquid phase outlet opposite to inverted cone-shaped boss are all set in each discharge straight cavity;Purging mechanism has multiple purging nozzles, multiple purging nozzles are respectively corresponding with multiple the discharge straight cavities, and the direction of injection is towards inverted cone-shaped boss in the discharge straight cavity, for purging liquid phase material separated by inverted cone-shaped boss;The device can effectively clean inverted cone-shaped boss surface, avoid liquid phase adhesion accumulation, to prevent plugging gas phase outlet, ensure long-term stable operation.

A deep purification system for light hydrocarbons adapted to low-pressure conditions includes a pretreatment unit, a primary adsorption tower, an intermediate conditioning unit, a secondary adsorption tower, and a tertiary adsorption tower connected in series. The primary, secondary, and tertiary adsorption towers are filled with modified COFs adsorbents, and each tower is equipped with a regeneration unit. The regeneration unit achieves desorption of the modified COFs adsorbent and recovery of light hydrocarbon gases through steam desorption, nitrogen purging, and cryogenic cooling. This invention solves the problems of low capacity, poor mass transfer at low pressure, and insufficient stability in existing adsorption technologies.

This invention relates to a device and method for dual-cycle refrigeration LNG helium extraction and light hydrocarbon recovery, belonging to the field of cryogenic liquefaction separation and natural gas helium extraction technology. The device integrates a mixed refrigerant refrigeration cycle and a nitrogen refrigeration cycle, and sequentially includes a feed gas pretreatment unit, a light hydrocarbon recovery unit, a denitrification liquefaction unit, and a helium extraction unit. The mixed refrigerant cycle provides cooling capacity for feed gas cooling liquefaction, light hydrocarbon recovery, and natural gas denitrification processes, while the nitrogen cycle provides deep cooling capacity for extracting crude helium from nitrogen-rich gas. In terms of method, the purified feed gas sequentially undergoes pretreatment, light hydrocarbon recovery, denitrification, and helium extraction steps to simultaneously produce LNG, crude helium, LPG, and stabilized light hydrocarbons. This invention has advantages such as high process energy efficiency, high helium and propane recovery rates, high purity of co-produced products, and reliable operation, realizing the high-value comprehensive utilization of natural gas resources.

This disclosure relates to a hydrotreating pretreatment device for waste lubricating oil and its application method. The hydrotreating pretreatment device for waste lubricating oil includes a treatment module, which comprises a distillation column, a condenser, and a gas supply unit. The distillation column has an internal cavity filled with adsorbent packing material. The distillation column is equipped with a first outlet pipe, a second outlet pipe, a third outlet pipe, a first inlet pipe, and a second inlet pipe, all connected to the cavity. The first outlet pipe is connected to the condenser and is used for the discharge of water and light hydrocarbons. The second outlet pipe is used for the discharge of polar additives from the waste lubricating oil. The third outlet pipe is used for the discharge of pretreated waste lubricating oil. The first inlet pipe is used for the waste lubricating oil from the waste oil supply unit to flow into the cavity. The second inlet pipe is connected to the gas supply unit and is used to supply regeneration gas to the cavity. This solution can remove water, light hydrocarbons, and polar additives, as well as regenerate the adsorbent packing material, thus solving the problem of catalyst pore blockage.

The utility model discloses a separation circulating device and gasification kettle, separation circulating device includes heating case, heat exchange structure, circulating pump and air sending structure, heating case is used for containing and heating heat exchange fluid, heat exchange structure is equipped with installation site and heat exchange position, and has the heat exchange flow channel that passes through installation site and heat exchange position, and both ends of heat exchange flow channel all communicate heating case, circulating pump communicates heat exchange flow channel, is used for driving heat exchange fluid and circulates flow between heat exchange flow channel and heating case, air sending structure is installed in heat exchange structure, and is located installation site, and has air sending flow channel and air sending mouth, and air sending mouth communicates air sending flow channel, is used for output air. The scheme can heat air and liquid light hydrocarbon simultaneously through heat exchange structure, realizes air preheating, avoids cold air to directly contact liquid light hydrocarbon and absorbs light hydrocarbon heat, and guarantees liquid light hydrocarbon and heat exchange structure effective heat exchange, and then improves light hydrocarbon gas production efficiency, and the device is relatively compact, saves the occupied space.

The application discloses a kind of for crude benzene full fraction and / or coal-based light hydrocarbon hydrogenation processing method, under the condition of 4~15Mpa, make reaction raw material sequentially through first-stage hydrogenation reaction, secondary hydrogenation reaction and tertiary hydrogenation reaction step.Wherein, first-stage hydrogenation reaction is liquid phase prehydrogenation, selects first NiMo catalyst;Secondary hydrogenation reaction is gas-liquid two-phase hydrogenation, selects second NiMo catalyst;Tertiary hydrogenation reaction is gas-phase hydrogenation, selects at least one of third NiMo catalyst, CoMo catalyst and NiMoW catalyst.The application adopts reasonable catalyst grading scheme and appropriate process condition, without carrying out heavy removal pretreatment to crude benzene, reduce the energy consumption required in processing process.

The application provides a modified ZSM-5 molecular sieve, a preparation method and application thereof. The preparation method comprises the following steps: mixing and impregnating a solution containing a phosphorus source with raw ZSM-5 molecular sieve to obtain P-ZSM-5 molecular sieve; mixing the P-ZSM-5 molecular sieve with a solution of an organic acid, reacting, drying and calcining to obtain the modified ZSM-5 molecular sieve. The application also provides the modified ZSM-5 molecular sieve obtained by the above preparation method and application of the molecular sieve. The preparation method can improve the single aluminum ratio of the ZSM-5 molecular sieve, thereby significantly improving the light hydrocarbon conversion capacity, low-carbon olefin yield and selectivity of the molecular sieve.

The application provides a micro chromatographic column for light hydrocarbon separation and a preparation method thereof, and the micro chromatographic column is prepared from FG and HKUST-1 to obtain FG-HKUST-1 stationary phase, and the FG-HKUST-1 stationary phase is non-polar material; in addition to having a screening effect on C1-C4 light hydrocarbon, further, there is a dispersion force between the non-polar FG-HKUST-1 stationary phase and non-polar light hydrocarbon, such as non-polar methane and ethane, so that the non-polar FG-HKUST-1 stationary phase has strong retention capacity for non-polar light hydrocarbon, thereby the resolution of C1-C4 light hydrocarbon can be improved, especially for light hydrocarbon with low resolution, large concentration difference and similar properties, such as methane and ethane, so that the application can meet the requirements of qualitative and quantitative analysis and detection of light hydrocarbon.

This invention provides a silicon-carbon composite material, its preparation method, and its applications. The silicon-carbon composite material has a core-shell structure, wherein the shell layer is a carbon layer obtained from the pyrolysis of petroleum products, and the core is silicon with a thickness of 5-200 nm; the carbon layer accounts for 1-60% of the mass of the silicon-carbon composite material; wherein the petroleum products include one or more combinations of light hydrocarbons, cracked gas, refinery gas, gasoline, diesel, wax oil, and residual oil. The silicon-carbon composite material prepared by this invention exhibits excellent electrochemical performance as an electrode material for lithium-ion batteries. Furthermore, this silicon-carbon composite material uses petroleum products as a carbon source, which is widely available, cost-controllable, and its composition adjustable.

This invention discloses a modified activated carbon composition and its application in deep purification processes for oil and gas recovery, relating to the field of industrial waste gas treatment. The preparation method of the modified activated carbon composition includes the following steps: activating coconut shell activated carbon in a mixture of steam and carbon dioxide, followed by hydrophobic treatment; loading metal oxides onto the surface of oil and gas recovery activated carbon, then performing surface oxidation modification via microwave irradiation; and mixing the two types of activated carbon at a mass ratio of 1-2.3:1 to obtain the target modified activated carbon composition. The modified activated carbon composition prepared by the aforementioned method is described. The modified activated carbon composition is applied in deep purification processes for oil and gas recovery. This invention, under safe conditions, achieves stable deep purification of difficult-to-treat light hydrocarbons such as ethane and propane, with an outlet tail gas concentration ≤60 mg / m³. 3 At the same time, it realizes the recycling of resources, with a vacuum desorption rate of ≥90%.