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

The present invention is one process of hydrofining coked full fraction oil. Based on available process of hydrofining coked full fraction oil, new hydrogen of the system is used in further refining of diesel oil, so that diesel oil is refined under ideal thermodynamic and dynamic conditions. This results in high product quality, flexible, economic and practical technological process, less investment increment, fully utilization of heat energy and low operation cost. The present invention is suitable for reforming and constructing coked full fraction oil hydrofining apapratus.

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 discloses a process method for treating residual oil. A hydrogenation pretreatment unit, a coking device, a hydrogenation treatment unit and a catalytic cracking device are provided; the hydrogenation pretreatment unit comprises a hydrogenation pretreatment reaction area and a hydrogenation treatment reaction area; the process method comprises the following steps: performing a reaction on a residual oil raw material by using the hydrogenation pretreatment unit, and performing oil fractionation 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. Due to adoption of the process method disclosed by the invention, the stable operation period of a device can be prolonged.

The invention relates to a method for producing lubricant base oil by isomerization dewaxing. The method is as follows: raw oil is mixed with hydrogen, then enters into a hydrocracking reaction zone to contact with an amorphous silica alumina-containing noble metal hydrocracking catalyst for reaction, the polycyclic napthene ring-opening reaction is performed, and a reaction effluent, without separation, directly enters into a hydrogenation isomerization dewaxing reaction zone to contact with a hydrogenation isomerization dewaxing catalyst for n-alkane isomerization reaction to obtain high viscosity index lubricant base oil with the pour point meeting the requirements. According to the method, the ring-opening reaction of polycyclic napthenes with two or more than two rings in the raw material is performed, the content of low viscosity index component polycyclic napthenes is reduced, the viscosity index loss in the isomerization dewaxing process is reduced, and the high viscosity index lubricant base oil with the pour point meeting the requirements is obtained.

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 coking-coking full range hydroprocessing combined process method. A simplified fractionating tower is arranged at a coking part, and a heat-exchange evaporation section and a condensing fractionation section are respectively arranged at the lower part and the upper part of the simplified fractionating tower. Oil gas produced by the coking reaction enter the simplified fractionating tower from the lower part, and flows upwards into the condensing fractionation section at the upper part of the simplified fractionating tower after being leached and exchanging heat with coking material, most of the oil gas is liquefied in the condensing fractionation section and led out of the simplified fractionating tower, a condensate led out of the simplified fractionating tower undergoes the hydroprocessing after separating out water, and a hydroprocessing product is separated into hydrogenated gasoline, hydrogenated diesel oil and hydrogenated wax oil. The method organically combines the coking technique and the hydroprocessing technique to simplify the coking technical process and improve the economical efficiency and reliability of the hydroprocessing part in the meanwhile.

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 production method of environment-friendly aromatic hydrocarbon oil for tires. The environment-friendly tire aromatic hydrocarbon oil meeting the European Union standard can be produced by taking positive-sequence furfural extract oil with a relatively high condensation point as a raw material and adopting a hydrotreatment-hydrodewaxing-solvent extraction combined process.The method comprises the following steps: performing hydrotreatment on raw materials under mild conditions to saturate polycyclic aromatic hydrocarbon, performing hydrodewaxing to reduce the condensation point to 0-10 DEG C, and finally performing shallow extraction to obtain the environment-friendly aromatic hydrocarbon oil for tires. The method expands sources of raw materials for producing theenvironment-friendly aromatic hydrocarbon oil, and has the characteristics of strong raw material adaptability and mild process conditions.

The invention discloses a heavy oil product treatment processing method. The method comprises a hydrogenation pretreatment device, a solvent deasphalting device, a hydrogenation treatment device and a catalytic cracking device, wherein the hydrogenation treatment device comprises a hydrogenation pretreatment reaction area and a hydrogenation treatment reaction area; the processing method comprises the following steps: residual oil raw material generated oil is subjected to fractional distillation after being reacted through a hydrogenation pretreatment unit to obtain light fraction and heavy fraction, wherein the heavy fraction is treated after entering the solvent deasphalting device so as to obtain deasphalted oil and deoiled asphalt, and the light fraction orderly passes through the hydrogenation pretreatment reaction area and the hydrogenation treatment reaction area which are in series connection after mixing with the deasphalted oil and hydrogen; gas-liquid separation is performed on reaction effluent of the hydrogenation treatment reaction area, and a gas phase is recycled back to the hydrogenation pretreatment reaction area and/or the hydrogenation treatment reaction area; a liquid phase directly enters a catalytic cracking reaction area to perform catalytic cracking reaction, and effluent of the catalytic cracking reaction is separated to obtain dry gas, liquefied gas, catalytic-cracked gasoline fraction, catalytic-cracked diesel fraction, catalytic-cracked heavy cycle oil and catalytic-cracked oil slurry. The stable operation period of the device can be prolonged by use of the method disclosed by the invention.

The process of producing clean fuel with petroleum hydrocarbons has well combined hydrocracking process, hydrodesulfurizing process, catalytically cracking process and coking process. It has most of decompressed wax oil from crude oil desulfurized and catalytically cracked, the coked wax oil obtained through coking catalytically cracked tail oil and vacuum residual oil hydrocracked, and the hydrocracked tail oil catalytically cracked for the second time. The combined process can obtain petroleum coke product, high quality hydrocracked light oil product and catalytically cracked light oil product simultaneously. Facilitate the operation of hydrocracking apparatus, increase the service life of the catalyst and obtain clean fuel in high economic benefit.