53results about How to "Improve hydrogenation reaction performance" patented technology

The invention relates to a fluidized bed hydrogenation reaction system, which comprises a fluidized bed reactor, wherein the fluidized bed reactor comprises a reactor barrel; a three-phase separator is arranged at the upper part of the reactor barrel and comprises an inner barrel and an outer barrel; openings are formed in the upper ends and the lower ends of the inner barrel and the outer barrel; the opening in the upper end of the outer barrel is lower than that of the inner barrel and the opening in the lower end of the outer barrel is lower than that of the inner barrel; the inner barrel is a straight barrel segment; the straight barrel segment is arranged at the upper part of the outer barrel and a frustum-shaped contraction segment is arranged at the lower part; the opening in the lower end of the contraction segment is the opening in the lower end of the outer barrel; and a gap is arranged between the opening in the lower end of the inner barrel and the outer barrel contraction segment, so that a material passes through the gap. The fluidized bed hydrogenation reaction system is adopted by the fluidized bed hydrogenation method, so that the utilization rate (namely the catalyst inventory in the reactor) of the reactor is further improved, and the hydrogenation reaction effect can be further improved.

The present invention relates to a hydrogenation method of a phthalate compound. According to the hydrogenation method of the present invention, a hydrogenation addition reaction occurs in a multi-tube type reactor or the like while the viscosity of only a liquid phthalate based raw material is lowered, thereby improving the yield of a hydrogenation reaction process, improving driving stability through hot spot control, and increasing commercial-scaled economic efficiency. In addition, according to another method of the present invention, the stability and economic efficiency of the hydrogenation process can be increased by maintaining the activity of a catalyst for a long time and improving the performance of the catalyst. Therefore, the present invention can reduce the total use amount of the catalyst required in the reaction and extend the replacement period, thereby improving process driving stability and economic efficiency when running a commercial-scaled process.

The invention discloses a shale oil one-stage in series hydrofining technological method, which comprises the following step: shale oil raw material and hydrogen firstly exchange heat with thermal media to 200-280 DEG C, and pass through a first reactor by the volume per hour of 0.5h-1 to 4.0h-1, and high-voidage hydrofining catalysts are arranged in the first reactor; and materials flowing out of the first reactor directly pass through a second reactor by the volume per hour of 0.3h-1 to 1.0h-1 after being heated by a heating furnace, the average reaction temperature in the second reactor is 360-420 DEG C, and conventional hydrofining catalysts are arranged in the second reactor. With the method disclosed by the invention, the hydrogenation reaction effect is improved under the condition of ensuring the long-term stable operation of a shale oil hydrogenation device.

The invention relates to a coal tar whole-fraction fluidized bed hydrogenation method which comprises the following steps: (1) heating coal tar whole fraction and mixing with circulation oil of a fluidized bed reactor; (2) mixing the mixture in the step (1) and hydrogen, dissolving the hydrogen, and enabling the mixture to enter a gas-liquid separator; (3) enabling a gaseous phase on the top of the gas-liquid separator in the step (2) to enter a fixed bed hydrogenation reactor from the top of the reactor, and enabling a liquid phase to enter the fluidized bed reactor from the bottom of the reactor so as to carry out a hydrogenation reaction; and (4) arranging a three-phase separator on the upper part inside the fluidized bed reactor in the step (3), discharging the gaseous phase separated from the three-phase separator from the top of the fluidized bed reactor to the fixed bed hydrogenation reactor in the step (3), and taking at least one part of the liquid phase through a circulatory system as the circulation oil in the step (1). Compared with the prior art, the method disclosed by the invention has the advantages that the steady operation problem existing in coal tar whole-fraction fluidized bed hydrogenation can be effectively solved, and the coal tar whole-fraction fluidized bed hydrogenation reaction effect is improved.

This invention relates to the compound of hydro catalyst and its preparation method. The compound contains the hydro catalyst, the organic nitrogen compound the content of which is 0.5-20%, the sulfur element which is composed of 30-150% sulfur demand of the hydro catalyst and the organic solution the weight of which is 0.1-50% of the catalyst. The preparation processes is leading-in the demanded mater when the hydro catalyst is oxide. This hydro catalyst compound can improve the sulfur holding ratio of the catalyst which is activated, and slow up the concentrate heat release, decrease the elevated temperature of the catalyst bed, and increase the activity of the catalyst through the lead-in organic nitrogen, sulfur and organic solution. This invention can be applied to the treatment processes of any hydro catalyst.

The process of treating hydrogenation catalyst before application includes introducing organic solvent and sulfur containing matter into the hydrogenation catalyst in oxide state, and the subsequent treating in dynamic heating equipment under certain conditions. The hydrogenation catalyst with introduced sulfur containing matter, such as element sulfur, has raised sulfur containing matter utilization rate, smooth temperature raising in the catalyst bed, raised catalyst activity and other features. The method of the present invention may be applied for various kinds of hydrogenation catalyst.

The invention provides a two-phase hydrogenation reactor and a two-phase hydrogenation method. Each space surrounded by the upper parts of each gas-liquid distributor, a corresponding liquid-phase collecting tray and a corresponding downcomer is a gas-phase chamber. Hydrogen is introduced into the gas-phase chambers from outside of the reactor. The liquid phase in the upper part of the reactor is collected by the liquid-phase collecting trays and flows onto gas-liquid distributing trays through the downcomers. The gas phase and the liquid phase are subjected to violent mass transfer by the gas-liquid distributors so that the hydrogen can be dissolved in the liquid phase well. The gas phase and the liquid phase in gas and liquid materials are separated after passing through the gas-liquid distributing trays. The liquid phase where the hydrogen is dissolved goes downward into catalyst bed layers to perform hydrogenation. The gas phase converges under the gas-liquid distributors and is discharged from the reactor. The two-phase hydrogenation reactor and the two-phase hydrogenation method can further enhance reaction effects of two-phase hydrogenation.

The present invention relates to hydrocarbon hydrocracking process including the steps of loading catalyst into the reactor, activating, reaction, etc. The hydrocracking catalyst contains organic nitrogen compound in 0.5-20 wt% of the catalyst, simple substance sulfur in the amount of 30-150 % of the theoretical sulfur demand of the catalyst, and organic solvent in 0.1-50 wt% of the catalyst. Thehydrocracking catalyst with the common action of organic nitrogen compound, sulfur and organic solvent has high sulfur holding rate in activation, less concentrated heat release, lowered temperature rise in the catalyst bed and high activity. It may be applied in various kinds of hydrocarbon hydrocracking process.