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Gasoline hydrodesulfurization modification micro-interface enhanced reaction system and method

A gasoline hydrogenation and reaction system technology, applied in the field of gasoline hydrogenation desulfurization, can solve the problems of high energy consumption of the process and insufficient contact between hydrogen and gasoline, so as to increase the interphase area, lower the cost per ton of product, and reduce the gas-liquid than the effect

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

[0013] Therefore, the present invention provides a gasoline hydrodesulfurization modification micro-interface strengthening reaction system and method to overcome the problem in the prior art that hydrogen cannot fully contact gasoline, resulting in excessive process energy consumption

Method used

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  • Gasoline hydrodesulfurization modification micro-interface enhanced reaction system and method
  • Gasoline hydrodesulfurization modification micro-interface enhanced reaction system and method
  • Gasoline hydrodesulfurization modification micro-interface enhanced reaction system and method

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Embodiment 1

[0066] see figure 1 As shown, it is a schematic structural diagram of the down-mounted micro-interfacial strengthening reaction system for gasoline hydrodesulfurization and modification described in the embodiment of the present invention, including a liquid feed unit 1, a gas feed unit 2, and a micro-interfacial generator 3 (MicroInterfacial Generator, referred to as MIG), a fixed bed reactor 4 and a separation tank 5; wherein, the micro interface generator 3 is respectively connected with the liquid feed unit 1 and the gas feed unit 2 to receive the liquid feed unit 1 The gasoline transported and the hydrogen transported by the gas feed unit 2; the fixed-bed reactor 4 is connected to the micro-interface generator 3 and the output of the micro-interface generator 3 is arranged inside the fixed-bed reactor 4, in order to The gas-liquid emulsion in the micro-interface generator 3 is exported to the fixed-bed reactor; the separation tank 5 is connected with the fixed-bed reactor...

Embodiment 2

[0084] see figure 2 As shown, it is a schematic structural diagram of a side-mounted hedging micro-interface strengthening reaction system for gasoline hydrodesulfurization and upgrading 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.

[0085] 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.

[0086] The first micro-interface genera...

Embodiment 3

[0089] see image 3 As shown, it is a schematic structural diagram of the downstream multi-stage micro-interface strengthening reaction system for hydrodesulfurization and upgrading of gasoline according to the present invention, and the components used in this system are the same as those in the first embodiment of the system.

[0090] Different from the first embodiment of the system, the reaction tank 41 in this embodiment is provided with multi-layer catalyst beds 42, and the bottom of each catalyst bed 42 except the lowest catalyst bed 42 is provided with an inlet. The gas port is used to transport the hydrogen output from the gas feed unit 2 to the interior of the reaction tank; the outlet of the gas feed preheating unit 23 is provided with a plurality of shunt pipes to transport the preheated hydrogen to the The gas inlet at the bottom of each catalyst bed 42 is used to ensure the hydrogen content inside the reaction tank 41 .

[0091] After the gas feed preheating unit ...

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Abstract

The invention relates to gasoline hydrodesulfurization modification micro-interface enhanced reaction system and method. The system comprises a liquid phase feeding unit, a gas phase feeding unit, a micro-interface generator, a fixed bed reactor and a separation tank. Compared with a traditional fixed bed reactor, according to the invention, gas is crushed to form micron-scale micro-bubbles, and the micro-bubbles and gasoline are mixed to form an emulsion, so that the gas-liquid two-phase interphase area is increased, the effect of enhancing mass transfer within a relatively low preset range is achieved, and the pressure in the reaction process can be reduced by 10-80% while the reaction efficiency is ensured; meanwhile, mass transfer is greatly enhanced, so that the gas-liquid ratio can be greatly reduced, the material consumption of gas is reduced; the energy consumption of subsequent gas circulating compression is also reduced; therefore, the method is low in process severity, highin production safety, low in ton product cost and high in market competitiveness.

Description

technical field [0001] The invention relates to the technical field of gasoline hydrodesulfurization, in particular to a micro-interface strengthening reaction system and method for gasoline hydrodesulfurization modification. Background technique [0002] Gasoline is one of the most used light petroleum products and is an important fuel for engines. Gasoline is produced and sold according to the grade, and the specifications of the grade are regulated by the national gasoline product standards and are related to different standards. At present, there are 3 gasoline brands in my country (IV), namely No. 90, No. 93 and No. 97. Country (V) is No. 89, No. 92, and No. 95 (No. 98 in the appendix). The grade of gasoline is divided by octane number. For example, No. 97 gasoline refers to a gasoline fuel with equivalent antiknock performance to 97% isooctane and 3% n-heptane. The larger the number, the better the antiknock performance. Different grades of gasoline should be sele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02B01J8/00C10G45/04C10G45/06C10G45/08
CPCB01J8/02B01J8/001B01J8/0278C10G45/04C10G45/06C10G45/08C10G2300/202C10G2300/70B01J2208/00823
Inventor 张志炳周政王宝荣杨高东孟为民张锋李磊罗华勋杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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