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Bottom-mounted micro-interface enhanced reaction device and method for residual oil hydrogenation reaction

A residual oil hydrogenation, bottom-mounted micro-technology, applied in chemical instruments and methods, hydrocarbon oil cracking, petroleum industry, etc., can solve the problems of high safety risk, high investment, high material consumption, etc., and achieve low process severity and production. The effect of high safety and low cost per ton of product

Inactive Publication Date: 2020-08-04
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bubble breaker can reduce the bubble size of the gas-liquid system from the traditional 3-10mm to 1μm-1mm, thereby greatly improving the gas holdup and gas-liquid mass transfer area of ​​the system, accelerating the multiphase reaction process, and improving the gas utilization rate , improve the environmental problems caused by excessive emissions, and increase the mass transfer rate and hydrogenation reaction efficiency to solve the problems of high temperature, high pressure, high material consumption, high investment, and high safety risks in the hydrogenation process of residual oil, thereby reducing the investment cost of equipment and running costs

Method used

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  • Bottom-mounted micro-interface enhanced reaction device and method for residual oil hydrogenation reaction

Examples

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Effect test

Embodiment 1

[0033] This embodiment specifies the device structure of the present invention, as figure 1 The shown below-mounted micro-interface strengthening reaction device for residual oil hydrogenation reaction includes:

[0034] Suspension bed reactor 4, the top is provided with the second outlet;

[0035] Air intake device, including a hydrogen buffer tank 12, a compressor 13 and a hydrogen preheater 14 connected in sequence, for raw gas delivery;

[0036] The liquid inlet device includes a residual oil raw material tank 9, a feed pump 10 and a residual oil preheater 11 connected in sequence, for raw material liquid transportation;

[0037] At least one bubble breaker is arranged at the bottom of the suspended bed reactor 4, and the bubble breaker is provided with a gas phase inlet, a liquid phase inlet and a first discharge port, and the first discharge port is connected to the suspension bed reactor; the gas phase The inlet is connected to the hydrogen preheater 14 of the air int...

Embodiment 2

[0041] This embodiment takes the hydrogenation ring-opening reaction of residual oil as an example to specifically illustrate an implementation of the method of the present invention.

[0042] The raw material residual oil is produced from the residual oil raw material tank 9, and after passing through the plunger pump 10 and then the residual oil preheater 11, it enters the microbubble breaker 3 through the liquid phase inlet 1, and the raw material hydrogen gas is extracted from the hydrogen gas raw material tank 12 at the same time , after passing through the compressor 13 and then the hydrogen preheater 14, it enters the pneumatic bubble breaker 3 from the bottom through the gas phase inlet 2, wherein the volume ratio of hydrogen and residual oil is 1000:1, and the two phases are in the microbubble breaker 3 Fully mixed under the action of hydrogen, and the hydrogen is broken into 300 ~ 500μm bubbles to increase the contact area of ​​the two phases. Then the mixed material...

Embodiment 3

[0046] The difference between this example and Example 2 is that the volume ratio of hydrogen and residual oil is 300:1, the two phases are fully mixed under the action of the bubble breaker 3, and the hydrogen is broken into 500μm-1mm bubbles .

[0047] The reaction pressure in the bubble breaker is 1 MPa, and the reaction temperature is 480°C. The suspension bed reactor 4 adopts a carbon-supported iron-based catalyst with a particle size of 100nm-1000μm. Airspeed control is 1.5h -1 . The light oil yield was 79%.

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Abstract

The invention discloses a bottom-mounted micro-interface enhanced reaction device and method for residual oil hydrogenation reaction. The bottom-mounted micro-interface enhanced reaction device comprises a suspended bed reactor, an air inlet device, a liquid inlet device, at least one bubble breaker and a three-phase separator. Hydrogen and a residual oil raw material with a catalyst are preheatedand then enter the bubble breakers to form a micron-sized bubble system, and then the micron-sized bubble system enters the suspended bed reactor, flows from bottom to top and is subjected to a hydrogenation reaction under the action of the catalyst. After the reaction, the product enters the three-phase separator for separation, the gas is discharged from a gas phase outlet, the liquid is extracted from a liquid phase outlet, the solid slag is discharged from a solid phase outlet, and the gas, the liquid and the solid slag are separately collected for subsequent treatment. The reaction device and method provided by the invention have the advantages of ultralow hydrogenation reaction pressure, small gas-liquid ratio, large gas-liquid mass transfer area, high reaction rate, low energy consumption, flexible process, high production safety and the like.

Description

technical field [0001] The invention relates to a bottom-mounted micro-interface strengthening reaction device and method for residual oil hydrogenation reaction. Background technique [0002] Since the 1970s, the quality of crude oil produced from petroleum began to deteriorate, and the content of heavy oil in crude oil, especially the yield of residual oil, showed an increasing trend. Residual oil can be divided into many types due to different crude oil origins and refining processes, and the physical and chemical properties of different types are different. Generally, it can be divided into two categories: atmospheric residue and vacuum residue. The main components of residual oil include saturated hydrocarbons, aromatic hydrocarbons, colloids and asphaltenes. Under the action of high temperature and pressure and catalysts, residual oil can be deeply hydrogenated, and light oil can be obtained through a series of complex physical and chemical changes such as ring-openin...

Claims

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Application Information

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IPC IPC(8): B01J8/22B01J8/18C10G45/04C10G45/16C10G45/22C10G47/12C10G47/26C10G47/36
CPCB01J8/1809B01J8/1827B01J8/1845B01J8/228B01J2208/00548B01J2208/00769B01J2208/00823B01J2208/00893C10G45/04C10G45/16C10G45/22C10G47/12C10G47/26C10G47/36C10G2300/202
Inventor 张志炳李大鹏周政门存贵孟为民黄传峰罗华勋高亚男王宝荣高伟张锋李磊
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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