8 results about "Light crude oil" patented technology

The application provides a method and device for preparing low-carbon olefins and aromatic hydrocarbons from aromatic hydrocarbon-containing light crude oil, which comprises the following steps: pretreating the aromatic hydrocarbon-containing light crude oil to obtain pretreated crude oil, subjecting the pretreated crude oil to raw material fractionation treatment to obtain a cracking unit feed stream, subjecting the cracking unit feed stream to cracking treatment to obtain a cracking product stream and a first residual oil stream; discharging the first residual oil stream, subjecting the cracking product stream to product separation treatment to obtain a separation product stream and a cracking gasoline stream; subjecting the cracking gasoline stream to gasoline hydrogenation treatment to obtain a hydrogenated cracking gasoline stream, subjecting the hydrogenated cracking gasoline stream to aromatic hydrocarbon extraction treatment to obtain a fourth aromatic hydrocarbon-rich stream, and subjecting the fourth aromatic hydrocarbon-rich stream to aromatic hydrocarbon separation treatment to obtain an aromatic hydrocarbon separation product stream. Compared with a traditional refining and chemical integration process, the technical scheme of the application greatly shortens the processing flow and can maximize the yield of low-carbon olefins and aromatic hydrocarbons from the aromatic hydrocarbon-containing light crude oil.

The present disclosure relates to a method and system for producing olefins by steam cracking of crude oil, which first fractionates the crude oil in a fractionating tower, and then introduces the first liquid phase fraction obtained by fractionation into a flash tower for second separation, to obtain a plurality of gas phase fractions for steam cracking, thereby realizing effective subdivision of the fractions in the crude oil; the process and control scheme are simpler, and for specific light crude oil such as paraffin-based crude oil, different fractions can be efficiently cracked, the yield of olefins is high, and the existing steam cracking technology can be maximally applied, the technology is mature and the operation is simple; the combination of the fractionating tower and the flash tower can more easily control the steam-out of different fractions; the atmospheric and vacuum devices, heating furnaces and the like are cancelled, thereby saving investment; the present disclosure is suitable for a wide range of crude oils, and the separated fractions can be flexibly utilized.

The present application relates to a method and system for producing high-value products with high utilization of crude oil, which comprises: (1) subjecting crude oil to distillation cutting to obtain light crude oil fraction and heavy crude oil fraction; (2) subjecting the heavy crude oil fraction to extraction separation to obtain extracted oil of the heavy crude oil fraction and raffinate oil of the heavy crude oil fraction; (3) contacting a catalytic cracking raw material with a catalyst in a catalytic cracking reactor to perform a catalytic cracking reaction, and separating oil and gas to obtain cracking gas, cracking light gasoline, cracking heavy gasoline, cracking diesel and cracking heavy oil; the catalytic cracking raw material comprises the light crude oil fraction, the extracted oil of the heavy crude oil fraction and difficult-to-convert components. The present application adopts a method combining crude oil component separation and catalytic cracking reaction, and can convert intermediate-based crude oil or poor-quality naphthenic-based crude oil into high-value products, with a yield of high-value products in the whole process close to 65% or more.

The application relates to a method and system for producing low-carbon olefins and aromatic hydrocarbons through catalytic cracking of poor crude oil, which comprises the following steps: crude oil is separated into a light crude oil fraction and a heavy crude oil fraction through distillation; the heavy crude oil fraction is subjected to a catalytic cracking reaction in a first reactor; the light crude oil fraction is subjected to a catalytic cracking reaction in a second reactor; after the reaction products and spent catalyst are separated through gas-solid separation, the spent catalyst is regenerated through stripping and coking and then returned to the reactor for recycling; the reaction products are separated to obtain ethylene, propylene, difficult-to-convert components and other products, wherein the difficult-to-convert components are subjected to a further catalytic cracking reaction in the second reactor to obtain ethylene and propylene. When the catalytic cracking method and system are used for the catalytic cracking reaction of crude oil, ethylene, propylene and other chemical raw materials can be produced with high selectivity, and efficient utilization of crude oil resources is realized.

The present disclosure relates to a method and system for cracking wide-cut feedstock containing heavy components to produce olefins. The wide-cut feedstock is mixed with a first portion of steam, then mixed with a second portion of steam, and then introduced into a fractionating column for separation. The light fraction and the middle fraction obtained by fractionation are heated in a convection section and then introduced into different furnace tubes of a radiant section of a steam cracking device for cracking. Alternatively, part of the fraction is sent to a refinery for secondary processing to produce other products. This method can efficiently crack different fractions of light crude oil or condensate oil, has high olefin yield, saves energy, and can maximize the use of existing steam cracking technology, which is mature and easy to operate. The method eliminates the need for atmospheric and vacuum distillation devices, thereby saving investment. The method has a wide range of crude oil adaptability and improves the comprehensive utilization rate of different fractions of wide-cut feedstock.

The application discloses a low-viscosity light crude oil water control and oil stabilization tool, and relates to the technical field of oil and gas field development in the petroleum industry. The tool comprises a tool main body, a tool inlet, a water flow channel outlet and an oil flow channel outlet are arranged on the tool main body, the tool main body comprises a pressure drop loss channel, an oil flow channel, a water flow channel, a pressure lead channel and a low-pressure chamber, the pressure drop loss channel is communicated with the tool inlet, the pressure drop loss channel and the oil flow channel and the water flow channel form a junction, the pressure lead channel is communicated with the pressure drop loss channel, the other end is connected with a pressure-sensitive component, the pressure-sensitive component is connected with a flow channel switching component capable of extending into the junction; the low-pressure chamber is communicated with the second end of the pressure drop loss channel, the pressure-sensitive component drives the flow channel switching component to change the posture, so that the pressure drop loss channel selectively communicates with the oil flow channel or the water flow channel. The water control and oil stabilization tool can independently distinguish crude oil and water according to the different additional pressure drop losses of the crude oil and the water, so that the balanced production profile of the low-viscosity crude oil is realized, and the water content of the old oil production well is reduced.

The invention relates to the technical field of crude oil storage tank storage, in particular to a mechanical noctilucent crude oil storage tank liquid level measuring device capable of being quickly disassembled and assembled, which comprises a lead weight, a buoy, a floater, a transmission rope and a pulley block, a crude oil storage tank comprises a tank body and a tank top, a vertical rope is connected between the tank top and the lead weight, the buoy is arranged on the outer side of the vertical rope, and a first hole is formed in the tank top. A pulley block is arranged at the top of the tank top, a transparent stroke device is arranged on the lower side of the pulley block along the outer wall of the tank body and provided with a second hole, the left end of a transmission rope and a buoy are installed together, the right end of the transmission rope and a floater are installed together, and tritium beads are installed on the floater. The device is reasonable and compact in structure, convenient to use, low in input cost, capable of accurately displaying the oil storage level in the crude oil storage tank, convenient to maintain, disassemble and assemble and capable of accurately displaying the oil storage level in the crude oil storage tank by means of the self-luminous performance of the tritium beads when the light condition is poor, and has the advantages of being safe, capable of saving labor, simple, convenient and efficient.

Processes for converting crude oil to gasoline include contacting a crude oil feed with an FCC catalyst composition in a cracking reaction zone of an FCC unit at a temperature of from 500° C. to 580° C., a catalyst-to-oil weight ratio of from 2 to 40, and a contact time of from 0.1 seconds to 60 seconds. The FCC catalyst composition includes USY zeolite impregnated with lanthanum, ZSM-5 zeolite impregnated with phosphorous, an alumina binder, colloidal silica, and Kaolin clay as a matrix material. The crude oil feed is a light crude oil, an extra light crude oil, or combination thereof, and has an API gravity of from 33 degrees to 45 degrees and a density of from 0.80 g / cm3 to 0.87 g / cm3. The contacting causes hydrocarbons in the crude oil feed to undergo cracking reactions to produce an FCC effluent that includes gasoline.