Laterally-arranged micro-interface enhanced reaction device and method for hydrogenation reactions of residual oil

A technology for residual oil hydrogenation and reaction device, 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 safety. The effect of high performance and low cost per ton of product

Inactive Publication Date: 2020-08-07
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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  • Laterally-arranged micro-interface enhanced reaction device and method for hydrogenation reactions of residual oil
  • Laterally-arranged micro-interface enhanced reaction device and method for hydrogenation reactions of residual oil
  • Laterally-arranged micro-interface enhanced reaction device and method for hydrogenation reactions of residual oil

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Experimental program
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Effect test

Embodiment 1

[0037] This embodiment specifies the device structure of the present invention, as figure 1 The shown side-mounted micro-interface strengthening reaction device for residual oil hydrogenation reaction includes:

[0038] Bubble reactor 4, the top is provided with the second outlet;

[0039] The air intake device includes a hydrogen buffer tank 12, a compressor 13 and a first preheater 14 connected in sequence, for raw gas delivery;

[0040] The liquid inlet device includes a residual oil raw material tank 9, a feed pump 10 and a second preheater 11 connected in sequence, for raw material liquid transportation;

[0041] At least one bubble breaker is arranged laterally at the lower part of the bubble 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 bubble reactor. Reactor; the gas phase inlet is connected to the first preheater 14 of the inlet device, and the ...

Embodiment 2

[0049] 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.

[0050] The residual oil raw material is extracted from the residual oil raw material tank 9, mixed with the catalyst through the feed pump 10, and then passed through the second preheater 11, and then passes through the liquid phase inlet 1 of the gas-liquid linkage bubble breaker and enters the In the gas-liquid linkage type bubble breaker 3 on the shell side of the bubble reactor 4, the other way enters the pneumatic bubble breaker 15 installed on the shell side of the bubble reactor 4 through the liquid phase inlet 16 of the pneumatic bubble breaker. middle. At the same time, the hydrogen raw material is extracted from the hydrogen buffer tank 12, passes through the compressor 13 and then the first preheater 14, and then passes through the gas phase inlet 2 of the gas-liquid linkage bubble b...

Embodiment 3

[0055] The difference between this embodiment and embodiment 2 is that the gas-liquid linkage type bubble breaker 3 and the pneumatic type bubble breaker 15 are in the form of image 3 The halved arrangement shown.

[0056] The standard volume ratio of fresh hydrogen gas and residual oil entering the gas-liquid linkage bubble breaker 3 is 300:1; the standard volume ratio of fresh hydrogen gas and residual oil entering the pneumatic bubble breaker is 1000:1. Hydrogen is broken into microbubbles with an average diameter of 400~1mm.

[0057] The reaction pressure in the bubble breaker is 1 MPa, and the reaction temperature is 480°C. A carbon-supported iron-based catalyst is used in the bubble reactor 4 with a particle size of 100nm-1000μm. Airspeed control is 1.5h -1 . The yield of light oil was 79%.

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Abstract

The invention discloses a laterally-arranged micro-interface enhanced reaction device and method for hydrogenation reactions of residual oil. The laterally-arranged micro-interface enhanced reaction device comprises a bubbling type reactor, a gas inlet device, a liquid inlet device, at least one bubble breaker, a gas-liquid separator and a circulating pump. Hydrogen and a residual oil raw materialwith a catalyst are preheated and then enter the bubble breakers to form a micron-sized bubble system; then the micron-sized bubble system enters the bubbling type reactor and flows from bottom to top, and a hydrogenation reaction is carried out under the action of the catalyst; and a product obtained after completion of the reaction enters the gas-liquid separator for separation, gas is discharged from a gas phase outlet, liquid with the catalyst enters the circulating pump from a liquid phase outlet and is subsequently conveyed, a part of the liquid is extracted as hydrogenated oil, and therest part of the liquid circularly enters the bubble breaker and is used for bubble breaking according to process requirements. 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 andthe like.

Description

technical field [0001] The invention relates to a side-mounted micro-interface strengthening reaction device and method for residue 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-opening c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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