63results about How to "Reduce operating severity" patented technology

The invention relates to a method used for hydrogenation modification of coking light distillate oil; under hydrogenation refining condition, the raw material of the coking light distillate oil and hydrogen are contacted with W-Mo-Ni series of hydrogenation catalysts firstly; subsequently, naphtha distillate, coal oil distillate and diesel distillate are gained by stripping and distillation; wherein, the coal oil distillate and new hydrogen enter a low-pressure hydrogenation reactor and are contacted with Ni-series of hydrogenation catalysts; the product is separated by a gas-liquid separator; and the liquid product is used as high-quality jet fuel components and the hydrogen-rich gas is returned to the coking light distillate oil raw material and used for hydrogenation refining. The method can process the coking light distillate oil with bad quality into high-quality jet fuel, high-quality naphtha and clean diesel components by simple process, has the advantages of wide application of the raw material, flexible operation, stable running, and the like, and effectively improves the economical benefits of the enterprises.

The invention discloses a coal tar pretreatment method. The method comprises the following steps: 1, fully mixing a coal tar raw material with water, salt and a de-emulsifier A, and using an oil-water separation device to separate the coal tar raw material at 50-200 DEG C under 0.1-5.0 Mpa into oil above water, water and oil under water, wherein the addition amount of water is 5-50% of the weight of the coal tar raw material, the addition amount of the de-emulsifier A is 0.003-0.05% of the weight of the coal tar raw material, and the addition amount of the salt makes the density of the salt in water reach 1.001-1.015 g / cm<3>; 2, treating the oil above water obtained in step 1 to obtain refined coal tar I; 3, treating the oil under water obtained in the step 1 to obtain standing coal tar II; and 4, mixing the refined coal tar I obtained in step 2 with the standing coal tar II obtained in step 3 to obtain refined coal tar, adding the refined coal tar to a distillation system, separating to obtain a fraction with the boiling point being smaller than 150 DEG C and a fraction with the boiling point being greater than 150 DEG C, and mixing a part of the fraction with the boiling point being smaller than 150 DEG C with the fraction with the boiling point being greater than 150 DEG C to obtain pretreated coal tar.

The invention belongs to the technical field of organic chemical industry, and particularly relates to a method for removing 2-butyne by conducting selective hydrogenation on C5 fractions. The method particularly comprises the following steps of 1 denitrification, wherein denitrification treatment is conducted on the C5 fractions through a fixed bed containing sulfonic group cation exchange resin and water; 2 selective hydrogenation, wherein selective hydrogenation is conducted on the C5 fractions obtained after denitrification through a bubbling bed reactor containing a Pd-Ni-Ag-M / Al2O3 catalyst, and then 2-butyne is converted into butane. The method has the advantages that the processes are simple, no wastewater is drained, the denitrification precision is high, no material is lost, and polymerization side reactions can be effectively inhibited.

The invention discloses a method for lightening residual oil. According to the method, residual oil raw materials goes through a hydrotreatment device, and the obtained hydrogenated oil undergoes flash evaporation to obtain light components and heavy components; the heavy components enters a reduced pressure distillation device to separate out reduced pressure wax oil, and the reduced pressure wax oil which is mixed with the hydrogenated light components enters a catalytic cracking device and undergoes fractionation to obtain a gas, gasoline and diesel oil which are discharged form the catalytic cracking device and recycle oil and oil slurry which are returned to the hydrotreatment device; and reduced pressure residual oil obtained by the reduced pressure distillation device enters a delayed coking device and undergoes the fractionation to obtain a gas, gasoline and a diesel oil fraction which are discharged from the delayed coking device and coked wax oil and tail oil which are returned to the hydrotreatment device. The method which combines the residual oil hydrotreatment, the catalytic cracking, the reduced pressure distillation and above delayed coking technology allows charged material compositions of the residual hydrogenation, the catalytic cracking and the delayed coking to be optimized, and target product yields of the catalytic cracking and the delayed coking to be improved.

The invention discloses a method by catalyzing and hydrogenating animal and vegetable oil to produce high-quality diesel. Animal and vegetable oil is subjected to hydrodeoxygenation and olefin saturation reaction with the existence of hydrogen and catalyst, gas and generated water are separated from effluents of hydrogenation reaction, gas, diesel fraction and incompletely-converted fraction are obtained by distilling the liquid, the incompletely-converted fraction is circulated back to a hydrogenation treatment reactor, the diesel fraction enters a hydrogenation modified reactor after being mixed with an optional modified raw material to be subjected to the modified reaction with the existence of hydrogen and modified catalyst, and gas products, naphtha and diesel fraction are obtained through the separation and distilling. Compared with the prior art, the hydrogenation reaction, hydrogenation modified reaction and / or pour point depression reaction of the animal and vegetable oil can be carried out under a relatively tempered technique condition, and the method has the advantages such as wide range of raw materials, high quality of products, high yield of diesel and fewer byproducts.

The invention discloses a method for hydrofining coking whole distillate oil, which overcomes the problems in the prior art that high-quality clean diesel oil cannot be obtained by hydrofining coking whole distillate oil, and the investment and operation cost of separate hydrofining of diesel oil are large. The problem. The present invention fully relies on the original coking whole distillate oil hydrofining process, and uses the new hydrogen of the system for further hydrofining of diesel oil, so that diesel oil can be refined under ideal thermodynamic conditions and dynamic conditions, not only the product quality is high, but also the The flexibility, economy and practicability of the process, at the same time, the investment in equipment is less, the heat energy is fully utilized, and the operating cost is low. The method of the invention is suitable for the transformation of coking whole distillate oil hydrogenation unit or the construction of a similar flow process.

The method of prolonging service life of heavy oil and residual oil hydrogenating catalyst includes hydrogenating to eliminate metal, eliminating asphalt with solvent, hydrogenating to eliminate sulfur and hydrogenating to eliminate nitrogen. The liquid phase effluent after hydrogenating to eliminate metal is asphalt eliminated to obtain asphalt-eliminating oil and oil-eliminating asphalt; the asphalt-eliminating oil together with the rest liquid phase effluent after hydrogenating to eliminate metal is made to enter the area of hydrogenating to eliminate sulfur and hydrogenating to eliminate nitrogen; and the oil-eliminating asphalt is coked to obtain coked wax oil with at least part returned to the area of hydrogenating to eliminate metal. Compared with available technology, the present invention has raised flexibility and prolongs the service life of the hydrogenating catalyst.

The invention discloses a method for reducing the viscosity of heavy oil and belongs to the technical field of petroleum processing. The method comprises the steps: contacting a heavy oil component with a catalyst with an alkaline carrier without silicon and aluminum elements in a viscosity reducing reactor, and carrying out cracking, isomerization, de-coagulation and viscosity reduction under thecondition of an oxygen-free and / or reducing atmosphere, wherein the process conditions are that the reaction temperature is 300-550 DEG C, the reaction pressure if 0.01-6.0Mpa, and the reaction timeis 0.1-5.0h. The viscosity of the heavy oil can be remarkably reduced, and a heavy oil fuel or heavy oil can provide a raw material for further processing and producing oil and gas products after theviscosity is reduced. A heavy oil viscosity reducing and cracking catalyst with the alkaline carrier without silicon and aluminum is adopted due to the polymerization coke generation promoting effectof an acidic catalyst and a polymerization coke generation inhibiting effect of an alkaline catalyst, viscosity reduction is carried out under the condition of the oxygen-free and / or reducing atmosphere, and therefore, on one hand, the polymerization coke generation tendency of a reaction product can be reduced under the condition of deep viscosity reduction, and on the other hand, the operation severity can be reduced when the relatively deep viscosity reducing effect is achieved.

The invention relates to a technological method for transferring hydrogenation for sec-butyl acetate by sec-butyl alcohol and simultaneously producing methyl ethyl ketone. According to the method, the composition of sec-butyl alcohol and sec-butyl acetate is taken as a raw material, the transferring hydrogenation for sec-butyl acetate by sec-butyl alcohol is realized under the effect of a hydrogenation catalyst, and the sec-butyl alcohol is dehydrogenized, so that the methyl ethyl ketone is obtained, the sec-butyl acetate is subjected to transferring hydrogenation, so as to produce the sec-butyl alcohol and ethyl alcohol; the produced sec-butyl alcohol is dehydrogenized, so that the methyl ethyl ketone is obtained. A product is subjected to gas-liquid separation, high-purity hydrogen is obtained, and a liquid product is subjected to distillation separation firstly, so that the composition of ethyl alcohol and methyl ethyl ketone is obtained, and the sec-butyl alcohol or the composition of the sec-butyl alcohol and the sec-butyl acetate in a column reactor returns a transferring hydrogenation reactor, so as to be reacted continuously; the composition of ethyl alcohol and the methyl ethyl ketone is subjected to extractive distillation firstly, so that a high-purity methyl ethyl ketone product is obtained, an extraction agent containing ethyl alcohol in the column reactor is rectified again, a high-purity ethyl alcohol product is obtained, and the extraction agent in the column reactor returns an extractive distillation column to be recycled. The method solves the problems that the sec-butyl acetate and the sec-butyl alcohol are azeotropic and high-purity sec-butyl alcohol and methyl ethyl ketone cannot be obtained.

The invention discloses a heavy oil hydroprocessing method and an internal loop reactor used by the method. In the heavy oil hydroprocessing method of the invention, the internal loop reactor is internally divided into two reaction segments, namely a fluidized bed reaction segment in a sleeve and a fixed bed reaction segment of a loop gap, and the mixture of heavy oil and hydrogen gas enters the reactor from the bottom and passes through the fluidized bed reaction segment first to undergo hydrogenation in the presence of a fluidized bed catalyst; and the catalyst is separated from the mixtureafter the reaction by a separator arranged on the upper part of the sleeve, and gas and liquid continuously go downwards to enter the fixed bed reaction segment of the loop gap to further undergo thehydrogenation in the presence of a fixed bed catalyst. The method has the combined characteristics of the fluidized bed and fixed bed hydrogenation processes, is well adapted to inferior raw materialoil with high metal and high asphaltene content and can realize the long-period stable operation of the device under the condition of achieving a high conversion rate and a high impurity removal rate.

The invention discloses a method for treating residual oil. A coking device, a hydrogenation pretreatment reaction area, a hydrogenation treatment reaction area and a catalytic cracking reaction area are provided, the method comprises the following steps: performing fractionation on a residual oil raw material so as to obtain light fraction and heavy fraction, feeding the heavy fraction into the coking device for treatment so as to obtain coked gasoline, coked diesel oil and coked wax oil, mixing the light fraction with the coked wax oil and hydrogen, passing through the hydrogenation pretreatment reaction area and the hydrogenation treatment reaction area which are connected in series, performing gas-liquid separation on a reaction effluent of the hydrogenation treatment reaction area, circulating vapor phase back to the hydrogenation pretreatment reaction area and / or the hydrogenation treatment reaction area, directly feeding liquid phase into the catalytic cracking reaction area for a catalytic cracking reaction, and separating a catalytic cracking reaction effluent, thereby obtaining a dry gas, a liquefied gas, catalytic cracking gasoline fraction, catalytic cracking area diesel oil fraction, catalytic cracking area recirculation oil and catalytic cracking area oil slurry. By adopting the method disclosed by the invention, the stable operation period of a device can be prolonged.

The invention discloses a delayed coking and reduced pressure distillation combined processing method. The method comprises the following steps that: high-temperature gases produced by the delayed coking device are delivered into a coking fractional distillation column for distillation and a dry point of the wax oil is controlled to ensure the quality of the wax oil; and coking tail oil and normal-pressure residual oil are delivered into a reduced pressure distillation device together to further and deep extract residual coking wax, the residual coking wax and straight run wax oil are discharged out from the device at the same time, and reduced pressure residual oil containing a small amount of coke powder is used as delayed coking feed. The method improves the yield of coking wax oil andensures the quality of the coking wax oil. With the increase of the extraction amount of the coking waxy oil, the amount of coking circulation oil is greatly reduced and the processing capacity of the coking device is improved, so the economic benefits are increased.

The invention belongs to the technical field of petrochemical industry, and particularly relates to a method and an apparatus for high-efficient crude oil desalination / dehydration by a combined filtration-electric field coalescence method. The apparatus for high-efficient crude oil desalination / dehydration of the invention comprises a raw material conveying system, a mixing device, a dehydration filtration device, and an electrical desalting device which are connected in order. The method for high-efficient crude oil desalination / dehydration of the invention is realized by using the apparatus for high-efficient crude oil desalination / dehydration of the invention and through the steps of raw material preheating, mixing, preliminary demulsification, and electrical desalination / dehydration. The invention adopts a combined filtration-electric field coalescence method for crude oil desalination / dehydration, which can overcome respective disadvantages of performing desalination / dehydration process by a filtration method or an electric field coalescence method, decrease running severity of both the two methods, not only improves the adaptability of the crude oil desalination process, the desalination / dehydration rate, and the stable running rate, but also reaches the purposes of energy saving and consumption reduction.

The invention relates to a regeneration method for a coked iridium-containing catalyst. The regeneration method comprises the following steps of (1) two-stage scorching the coked iridium-containing catalyst with an oxygen-containing gas; and (2) performing water and chlorine balance treatment on the scorched catalyst, then performing water and chlorine activating treatment and the reducing. The method is simple in operations, and can completely recover performance of the coked catalyst.