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Micro-interface enhanced suspended bed hydrogenation reaction system and method

A technology of hydrogenation reaction and suspension bed, which is applied in the field of hydrodesulfurization of oil products, can solve the problems of high energy consumption of hydrogen process, achieve the effects of low cost per ton of products, reduce gas-liquid ratio, and reduce material consumption

Pending Publication Date: 2020-09-22
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

[0010] Therefore, the present invention provides a micro-interface enhanced suspension bed hydrogenation reaction system and method to overcome the problem in the prior art that hydrogen cannot fully contact the reaction medium, resulting in excessive process energy consumption

Method used

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  • Micro-interface enhanced suspended bed hydrogenation reaction system and method
  • Micro-interface enhanced suspended bed hydrogenation reaction system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0045] see figure 1 As shown, it is a structural schematic diagram of the down-mounted micro-interface enhanced suspension bed hydrogenation reaction system described in the embodiment of the present invention, including a liquid feed unit 1, a gas feed unit 2, and a micro interface generator 3 (Micro Interface Generator, referred to as MIG ), a suspended bed reactor 4 and a separation tank 5; wherein, the micro-interface generator 3 is connected to the liquid feed unit 1 and the gas feed unit 2, respectively, to receive the gas delivered by the liquid feed unit 1 The hydrogen delivered by reaction medium and gas feed unit 2; the suspended bed reactor 4 is connected to the micro interface generator 3 and the output end of the micro interface generator 3 is arranged inside the suspended bed reactor 4, in order to micro interface generator 3 The gas-liquid emulsion in the interface generator 3 is exported to the suspended bed reactor; the separation tank 5 is connected to the su...

Embodiment 2

[0061] see figure 2 As shown, it is a schematic structural diagram of a side-mounted hedging micro-interface enhanced suspension bed hydrogenation reaction system according to an embodiment of the present invention. The components used in this system are the same as those in the first embodiment of the system.

[0062] Different from the above-mentioned system embodiment 1, the micro-interface generator 3 in this embodiment is also provided with a third micro-interface generator 33, and the third micro-interface generator 33 is arranged in the gas feed pre- Heater 23 outlet, and the 3rd micro-interface generator 33 is connected in parallel with described second micro-interface generator 32, in order to break up the specified amount of hydrogen respectively; A micro-interface generator 31 is connected in series to crush the hydrogen in multiple stages, thereby further reducing the diameter of the micro-bubbles.

[0063] The first micro-interface generator 31 and the second mi...

experiment example 1

[0077] Use the above method and use the system in the first embodiment of the system to carry out hydrodesulfurization and upgrading of FCC gasoline, wherein:

[0078] In step 5, the standard volume ratio of hydrogen to FCC gasoline in the first microinterface generator is 0.25:1; the standard volume ratio of hydrogen to FCC gasoline in the second microinterface generator is 800:1.

[0079] In step 6, the pressure inside the ebullated bed reactor 4 is controlled at 3 MPa, and the reaction temperature is controlled at 220°C.

[0080] The catalyst in the step 7 is a molybdenum-nickel catalyst.

[0081] The reaction medium before and after the operation of the system was tested respectively, and the test results are as follows:

[0082] Before the system treatment, the sulfur content in the raw material reaction medium was 120ppm, and after the system treatment, the sulfur content in the reaction medium dropped to 20ppm.

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Abstract

The invention relates to a micro-interface enhanced suspended bed hydrogenation reaction system, which enables micro-bubbles in a reactor to be in a micron scale by using a micro-interface generator so as to increase the mass transfer area between a reaction medium and hydrogen, and comprises a liquid phase feeding unit, a gas phase feeding unit, a micro-interface generator, a suspended bed reactor and a separation tank. Compared with a traditional suspended bed reactor, the suspended bed reactor has the advantages that gas is crushed and mixed with a reaction medium to form emulsified liquid,so that the interphase area of gas and liquid phases is increased and the effect of enhancing mass transfer within a lower preset range is achieved; the pressure in the reaction process can be reduced by 10-80% while the reaction efficiency is guaranteed; meanwhile, mass transfer is greatly enhanced, so that the gas-liquid ratio can be greatly reduced, the material consumption of gas is reduced;in addition, the energy consumption of subsequent gas circulating compression is also reduced; the method is low in process severity, high in production safety, low in ton product cost and high in market competitiveness.

Description

technical field [0001] The invention relates to the technical field of hydrodesulfurization of oil products, in particular to a micro-interface enhanced suspension bed hydrogenation reaction system and method. Background technique [0002] Due to the increasing shortage of petroleum resources and the increasingly serious trend of heavy oil, it has become an important task for oil refiners to obtain the largest amount of light oil products, so more and more people are doing research on heavy oil processing. [0003] Suspension bed hydrogenation process is one of the ideal methods for lightening heavy oil. The process is generally uniform mixing of dispersed catalyst and raw oil to obtain mixed raw materials, and then the mixed raw materials and a large amount of hydrogen enter one or more identical empty cylinder reactors, and carry out catalytic hydrogenation and cracking reactions under hydrogen conditions. . Although all countries in the world are working hard to study t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/22B01J8/00C10G45/04C10G45/06C10G45/08B01F3/08
CPCB01J8/22B01J8/001C10G45/04C10G45/06C10G45/08C10G2300/202C10G2300/70B01J2208/00823B01F23/4105B01F23/41
Inventor 张志炳周政孟为民王宝荣杨高东罗华勋张锋李磊杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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