32results about How to "Synchro deactivation" patented technology

The invention discloses a heavy oil hydrotreating method. The method comprises the following steps: (1) heavy oil raw materials are fractionated, and light fractions and heavy fractions are obtained;(2) the heavy fractions obtained in the step (1) enter a solvent deasphalting device, and deasphalted oil and deoiled asphalt are obtained after treatment; (3) the light fractions obtained in the step(1) and the deasphalted oil obtained in the step (2) are mixed with hydrogen, a mixture passes through a fixed bed hydropretreating reaction zone and a fixed bed hydrotreating reaction zone which arearranged in series sequentially, generated oil obtained in the fixed bed hydrotreating reaction zone enters a fluidized bed hydrocracking reaction zone, a reaction effluent from the fluidized bed hydrocracking reaction zone is separated, and gas, gasoline, diesel oil, wax oil and unconverted oil are obtained; (4) after the unconverted oil obtained in the step (3) is mixed with the heavy fractionsobtained in the step (1), the mixture enters a solvent deasphalting device for treatment. With adoption of the method, the operation period of a treatment device can be greatly prolonged.

The invention discloses a process for treating inferior oil, the process includes a hydropretreating reaction zone, a hydrotreating reaction zone and a catalytic cracking reaction zone; the process includes the following contents: a residual oil raw material and hydrogen are mixed, and in turn pass through the hydropretreating reaction zone and the hydrotreating reaction zone which are in series connection, after gas-liquid separation of a hydrotreating reaction zone reaction effluent, a gas phase is recycled back to the hydropretreating reaction zone and / or the hydrotreating reaction zone, a liquid phase directly enters the catalytic cracking reaction zone for catalytic cracking reaction, a catalytic cracking reaction effluent is separated to obtain a dry gas, liquefied gas, a catalytic cracking gasoline fraction, a catalytic cracking diesel oil fraction, catalytic cracking heavy cycle oil and catalytic cracking oil slurry, and the catalytic cracking diesel and the catalytic cracking heavy cycle oil are partially or totally recycled back to the hydrotreating reaction zone for hydrotreating reaction. The method can prolong the stable operation period of a device.

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.

A gradation loading method for heavy oil hydrotreating catalysts, the reaction system includes two or more hydrogenation reactors in series, starting from the second reactor, in the same reactor, according to the order of contact with the reactant stream , both the catalyst activity and the possible pore size show a decreasing trend; in two adjacent reactors, according to the order of contact with the reactant stream, the activity of the catalyst at the bottom of the former reactor is lower than that of the catalyst at the top of the latter reactor, and the catalyst at the bottom of the former reactor The pore diameter of the catalyst at the top of the latter reactor is not greater than the pore diameter of the catalyst at the top of the latter reactor; at the same time, the activity of the catalyst at the bottom of the former reactor is lower than that of the catalyst at the bottom of the latter reactor, and the pore diameter of the catalyst at the bottom of the former reactor is larger than that of the catalyst at the top of the latter reactor Can be several apertures.