Method for hydrogenation of heavy oil with multistage supergravity reactor

A hypergravity reactor, heavy oil hydrogenation technology, applied in chemical instruments and methods, processing hydrocarbon oil, petroleum industry, etc., to achieve the effect of reducing investment, reducing investment costs, and reducing floor space

Active Publication Date: 2018-02-16
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low solubility of hydrogen in heavy oil with high viscosity, the existing high-gravity reactor cannot efficiently carry out the hydrogenation reaction of heavy oil

Method used

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  • Method for hydrogenation of heavy oil with multistage supergravity reactor
  • Method for hydrogenation of heavy oil with multistage supergravity reactor

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Experimental program
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Effect test

Embodiment 1

[0059] Such as figure 2 Shown, a method for hydrogenation of heavy oil in a multi-stage hypergravity reactor to remove sulfur, nitrogen and vanadium and nickel in the metal in the heavy oil;

[0060] The temperature of the heavy oil hydrogenation reaction in the supergravity reactor is 330-460°C, the pressure is 4-9MPa, and the flow rate of the gas phase is controlled to be 1m 3 / h, the liquid phase flow rate is 10L / h, the catalyst is packed in the rotor area in disordered bulk, the asphaltene in imported heavy oil is 3.3%wt, the mass fraction of sulfur is 2.79%, the mass fraction of nitrogen is 0.43%, and the vanadium content It is 1.5 μg / g, and the content of nickel is 50 μg / g.

[0061] After the reaction, the deasphaltene at the final liquid outlet reaches 50%, the demetallization reaches 80%, the desulfurization rate reaches 88%, and the nitrogen removal rate reaches 45%. Adopt conventional high-gravity reactors (for example, the disclosed high-gravity reactor of Chines...

Embodiment 2

[0063] Such as figure 2 Shown, a kind of heavy oil hydrogenation method of multi-stage supergravity reactor, to remove sulfur in heavy oil, nitrogen and vanadium and nickel in metal; Operation steps are the same as embodiment 1, difference is:

[0064] The rotating speed is 2400rpm, the temperature is 550°C, and the pressure is 10MPa under the operating conditions,

[0065] After the reaction, the deasphaltene at the final liquid outlet reaches 60%, the demetallization reaches 85%, the desulfurization rate reaches 90%, and the nitrogen removal rate reaches 50%.

[0066] Adopt conventional high-gravity reactors (for example, the disclosed high-gravity reactor of Chinese patent application CN103102942A or the disclosed high-gravity reactor of CN104419454A), the liquid outlet desulfurization rate≦80%, denitrification rate≦21%, demetallization≦50%, and desulfurization rate≦80%. Asphaltenes≦30%, the invention is obviously superior to the existing hydrogenation process in a high-g...

Embodiment 3

[0068] Such as figure 2 Shown, a kind of heavy oil hydrogenation method of multi-stage supergravity reactor, to remove sulfur in heavy oil, nitrogen and vanadium and nickel in metal; Operation steps are the same as embodiment 1, difference is:

[0069] The rotor area of ​​the rotating bed is divided into 8 layers of concentric rings, the first layer is a stainless steel wire mesh packing ring, and the packing rings and catalyst rings are placed alternately, along the radius of the rotor are desulfurization, denitrification, demetallization of vanadium and demetallization of nickel catalyst.

[0070] After the reaction, the asphaltene removal rate of the final liquid outlet reaches 65%, the demetallization rate reaches 88%, the desulfurization rate reaches 92%, and the nitrogen removal rate reaches 60%.

[0071] Adopt conventional high-gravity reactors (for example, the disclosed high-gravity reactor of Chinese patent application CN103102942A or the disclosed high-gravity rea...

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Abstract

The invention discloses a method for hydrogenation of heavy oil with a multistage supergravity reactor. The method comprises the following steps: starting up a motor of a supergravity reactor, drivingrotating discs of all stages to rotate, and meanwhile, turning on an ultrasonic probe of a charging chamber; loading hydrogen gas and heavy oil to the charging chamber, and carrying out gas-liquid two-phase efficient mixing, so as to form a gas-liquid mixture; and spraying the gas-liquid mixture to a rotating disc of a first-stage rotor from the lower end of the charging chamber under the actionof gas pressure and gravity, spinning the gas-liquid mixture to flow through a catalyst in the rotor by using a centrifugal force of the rotating disc so as to complete a gas-liquid-solid three-phasehydrogenation reaction process, conveying a reaction product to a rotating disc of a second-stage rotor from a liquid outlet of the bottom of the first-stage rotor, enabling the reaction product to enter the second-stage rotor for a reaction, and carrying out operation in such a manner until a reaction product enters an N-th rotor, is subjected to a reaction and then is discharged from the reactorfrom a liquid outlet of the bottom of a shell. According to the method disclosed by the invention, the deasphaltenizing percent can reach 50% or more, the demetalization percent can reach 80% or more, the desulfurization percent can reach 88% or more, and the denitrification percent can reach 45% or more.

Description

technical field [0001] The invention belongs to the field of hydrogenation reaction of heavy oil, in particular to a method for hydrogenation of heavy oil in a multi-stage supergravity reactor. Background technique [0002] With the rapid development of the global economy, the increasing energy crisis, the shortage of oil resources, the deterioration of crude oil, the increase in the demand for middle distillates, and the increasingly stringent environmental regulations have greatly promoted the lightening of heavy oil. technology development. [0003] The composition of heavy oil raw materials generally has the following characteristics: high content of impurities such as metals, sulfur and nitrogen, high content of asphaltenes, and wide molecular size distribution. Colloids and asphaltenes in heavy oil are composed of several unit structures connected by bridge bonds. The unit structures of gums and asphaltenes are based on the fused aromatic ring system as the core and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04B01J8/08B01J8/10B01J19/10
CPCB01J8/0005B01J8/085B01J8/10B01J19/10C10G45/04C10G2300/202
Inventor 罗勇岳旭佳初广文陈建峰邹海魁孙宝昌张亮亮
Owner BEIJING UNIV OF CHEM TECH
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