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Oil-coal co-hydrogenation micro-interface enhanced fluidized bed reaction system

A technology of ebullating bed reactor and reaction system, which is applied in the field of oil-coal co-hydrogenation micro-interface enhanced ebullating bed reaction system, can solve the problem of high energy consumption in hydrogen process, achieve low cost per ton of products, reduce operating pressure, and reduce material consumption Effect

Inactive 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

[0011] Therefore, the present invention provides an oil-coal co-hydrogenation micro-interface enhanced ebullating bed reaction system to overcome the problem in the prior art that hydrogen cannot fully contact the mixed oil, resulting in excessive process energy consumption

Method used

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  • Oil-coal co-hydrogenation micro-interface enhanced fluidized bed reaction system
  • Oil-coal co-hydrogenation micro-interface enhanced fluidized bed reaction system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] See figure 1 As shown, it is a schematic structural diagram of a bottom-mounted oil-coal co-hydrogenation micro-interface enhanced boiling bed reaction system according to an embodiment of the present invention, including a liquid feeding unit 1, a gas feeding unit 2, a micro-interface generator 3, and a boiling bed The reactor 4 and the separation tank 5; wherein the micro-interface generator 3 is connected to the liquid feeding unit 1 and the gas feeding unit 2 respectively, and is used to receive the mixed oil delivered by the liquid feeding unit 1 and The hydrogen delivered by the gas feed unit 2; the fluidized bed reactor 4 is connected to the micro-interface generator 3, and the output end of the micro-interface generator 3 is set inside the fluidized bed reactor 4 for the micro-interface generator The gas-liquid emulsion in 3 is output to the fluidized bed reactor; the separation tank 5 is connected to the fluidized bed reactor 4 to receive the mixture output from ...

Embodiment 2

[0072] See figure 2 As shown, it is a schematic structural diagram of a side-mounted opposed oil-coal co-hydrogenation micro-interface enhanced fluidized bed reaction system according to an embodiment of the present invention, and the components of the system are the same as those in the first embodiment of the system.

[0073] The difference from Embodiment 1 of the above system is that in this embodiment, the micro-interface generator 3 is also provided with a third micro-interface generator 33, and the third micro-interface generator 33 is set in the gas feed At the exit of the heat exchanger 23, and the third micro-interface generator 33 is connected in parallel with the second micro-interface generator 32 to break a specified amount of hydrogen; the third micro-interface generator 33 is also connected to the first A micro-interface generator 31 is connected in series to break the hydrogen gas in multiple stages, thereby further reducing the diameter of the microbubbles.

[00...

experiment example 1

[0088] Use the above method and use the system in the first embodiment of the system to hydrodesulfurize the mixed oil, where:

[0089] The mixed oil product includes 100 mesh lignite and FCC gasoline, and the ratio of lignite to FCC gasoline is 1:1.

[0090] The standard volume ratio of hydrogen to mixed oil in the first micro-interface generator is 0.2:1; the standard volume ratio of hydrogen to mixed oil in the second micro-interface generator is 800:1.

[0091] In the step 6, the air pressure inside the fluidized bed reactor 4 is controlled at 8MPa, the reaction temperature is controlled at 380°C, and the space velocity is controlled at 0.5h -1 .

[0092] The catalyst in the step 7 is an iron-cobalt catalyst.

[0093] The mixed oil products before and after the operation of the system were tested. The test results are as follows:

[0094] The sulfur content in the raw material mixed oil is 120 ppm, which is reduced to 25 ppm after the process of this hydrodesulfurization reaction pro...

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Abstract

The invention relates to an oil-coal co-hydrogenation micro-interface enhanced fluidized bed reaction system. The system comprises a liquid phase feeding unit, a gas phase feeding unit, a micro-interface generator, a fluidized bed reactor and a separation tank. Compared with a traditional fluidized bed reactor, according to the invention, gas is crushed to form micron-scale micro-bubbles, and themicro-bubbles are mixed with a mixed oil product 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, and meanwhile, 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 oil-coal co-hydrogenation fluidized bed, in particular to an oil-coal co-hydrogenation micro-interface enhanced fluidized bed reaction system. Background technique [0002] The fluidized bed reactor is a kind of reactor that uses gas or liquid to pass through the granular solid layer to make the solid particles in a suspended state, and carry out the gas, liquid, and solid three-phase mutual reaction. Since the catalyst can realize online replacement, continuous regeneration and recycling operation, it is very suitable for processing heavy and inferior feedstock oils with high metal content and high asphaltene content. In addition, the fluidized bed reactor has the advantages of large space velocity, small pressure drop in the reactor, uniform temperature distribution, good mass and heat transfer, high catalyst utilization, long operation period, and flexible device operation. It overcomes the shortcomings of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/22B01J8/00C10G45/04C10G45/06C10G45/08
CPCB01J8/001B01J8/22B01J2208/00823C10G45/04C10G45/06C10G45/08C10G2300/202C10G2300/70
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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