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Vertically-opposite-jetting type micro-interface enhanced reaction device and method

A reaction device and bubble reactor technology, applied in chemical instruments and methods, chemical/physical processes, hydrocarbon oil cracking, etc., can solve problems such as high safety risks, high material consumption, high investment, etc., and achieve improved mass transfer rate , high production cost and high investment intensity

Pending Publication Date: 2020-08-07
NANJING UNIV +1
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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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  • Vertically-opposite-jetting type micro-interface enhanced reaction device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment specifies the device structure of the present invention, as figure 1 The upper and lower hedging type micro-interface strengthening reaction device for residual oil hydrogenation reaction shown includes:

[0036] Bubble reactor 4, the top is provided with a second discharge port, and the bottom side wall is provided with a third discharge port;

[0037] Air intake device, including a hydrogen buffer tank 24, a compressor 25 and a hydrogen preheater 26 connected in sequence, for raw gas delivery;

[0038] The liquid inlet device includes a residual oil raw material tank 20 and a feed pump 21 connected in sequence, and the feed pump is respectively connected to the first residual oil preheater 22 and the second residual oil preheater 23 for raw material liquid transportation; Feed pump 21 selects plunger pump for use in the example;

[0039] At least two bubble breakers are respectively arranged on the top and bottom of the bubble reactor 4 shell, and th...

Embodiment 2

[0045] 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.

[0046] The raw material residual oil is produced from the residual oil raw material tank 20, and is divided into two paths after passing through the pipeline 9 through the feed pump 21. One path is merged with the circulating fluid in the pipeline 11 through the pipeline 16 and then passed through the first residual oil preheater 22 above. The liquid phase inlet 2 of the upper bubble breaker enters the upper bubble breaker 3, and the other path passes through the second residual oil preheater 23 below and then enters the lower bubble breaker 27 from the liquid phase inlet 15 of the lower bubble breaker through the pipeline 14; at the same time, the raw material Hydrogen is extracted from the hydrogen raw material tank 24, and after entering the pipeline 1 through the compressor 25 and the hydrog...

Embodiment 3

[0050] The difference between this example and Example 2 is that hydrogen and residual oil enter the reaction system at a volume ratio of 1200:1. Under the action of the breaker, hydrogen is broken into micron-sized bubbles with an average diameter of 400μm~1mm, the reaction pressure is 1MPa, and the reaction temperature is 480°C. Using carbon-supported iron-based catalysts, the space velocity is controlled at 0.2h -1 . Light oil yield is 83%,

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Abstract

The invention discloses a vertically-opposite-jetting type micro-interface enhanced reaction device and method. The vertically-opposite-jetting type micro-interface enhanced reaction device comprisesa bubbling type reactor, an air inlet device, a liquid inlet device, at least two bubble breakers, a three-phase separator and a circulating pump. Hydrogen and a residual oil raw material with a catalyst are preheated and then enter the bubble breakers to form micron-sized bubble systems; then the micron-sized bubble systems are respectively fed into the bubbling type reactor from first dischargeholes in the bubble breaker at the top and the bubble breaker at the bottom; the micron-sized bubble systems are oppositely jetted in the bubbling type reactor, and a hydrogenation reaction is conducted under the action of the catalyst. The reaction device and method provided by the invention have the advantages of ultralow hydrogenation reaction pressure, small gas-liquid ratio, large gas-liquidmass transfer area, high reaction rate, low energy consumption, flexible process, high production safety and the like.

Description

technical field [0001] The invention relates to an up and down hedging type micro interface strengthening reaction device and method. 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 cracking. fuel oil product...

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
CPCB01J8/228B01J8/1827B01J8/1845B01J8/1809C10G47/12C10G47/26C10G47/36C10G45/04C10G45/16C10G45/22B01J2208/00548B01J2208/00769B01J2208/00823B01J2208/00893C10G2300/202
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 UNIV
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