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Reaction device of circulating fluidized bed

A circulating fluidized bed and reaction device technology, applied in cracking, catalyst, catalytic cracking, etc., can solve the problem of unsatisfactory separation of oil and gas, delay and catalyst, and achieve the effect of improving separation efficiency

Active Publication Date: 2020-10-16
SHANGHAI SUPEZET ENG TECH CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But, for the circulating fluidized bed reaction device of alkane catalytic dehydrogenation and catalytic cracking, the separation effect of using the above-mentioned technology oil gas, delay and catalyzer is not ideal enough, for this reason, this application is proposed

Method used

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  • Reaction device of circulating fluidized bed
  • Reaction device of circulating fluidized bed
  • Reaction device of circulating fluidized bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] This embodiment takes the alkane catalytic dehydrogenation reaction device as an example, in combination with the attached figure 1 -2, 4-5 further specifically illustrate the reaction device of the present application.

[0079] Such as figure 1 As shown, the alkane catalytic dehydrogenation reaction device includes a reactor 2 and a settler 7 of the reactor. The reactor 2 includes a dense phase section and a dilute phase delivery pipe 5 , and the dilute phase delivery pipe 5 extends into a settler 7 . Several layers of grids 3 are arranged in the dense phase section.

[0080] The settler 7 includes a cyclone rapid separation assembly 6 , and the cyclone rapid separation assembly 6 includes a first flow divider 61 , a second flow divider 62 , and a third flow divider 63 . The first, second and third splitters are all located above the outlet of the reactor.

[0081]The swirl quick separation component can also achieve the effect of quick separation of oil gas and ca...

experiment example 1

[0103] In addition to the different fast separation components, other structural references of other reaction devices are as follows figure 1 shown. In the reaction device of this experimental example, a conical splitter is arranged above the outlet of the dilute phase conveying pipe in the settler, such as image 3 As shown, the cross-sectional area of ​​the lower edge of the diverter is three times the cross-sectional area of ​​the outlet of the dilute-phase conveying pipe, the angle between the conical generatrix of the diverter and the bottom surface is 60°, and the position of the diverter and the outlet of the dilute-phase conveying pipe constitutes The area of ​​the annulus is 1.5 times the area of ​​the outlet of the dilute phase conveying pipe. The lower edge of the splitter is located in the dense-phase section of the settler, and the lower edge of the splitter is 2m away from the dilute-dense phase interface in the settler. The linear velocity at the outlet of the...

experiment example 2

[0105] Other conditions remain the same, this is the swirl fast separation component of the experimental example using the attached figure 1 Composite shunt shown. as attached Figure 5 As shown, the angles between the conical generatrices of the first, second and third diverters and the bottom surface are all 60°, the bottom surface of the first diverter is higher than the outlet of the dilute-phase delivery pipe, and the distance between the first diverter and the outlet of the dilute-phase delivery pipe The area of ​​the annulus formed by the position of the annulus area (fluid flow area) is 2.5 times the area of ​​the outlet of the dilute-phase conveying pipe, the bottom area of ​​the second diverter is 3 times the cross-sectional area of ​​the outlet of the dilute-phase conveying pipe, and the area of ​​the first diverter The distance from the second splitter is 1.2 times the diameter of the outlet of the dilute-phase delivery pipe, the top outlet area of ​​the second sp...

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Abstract

The invention relates to a circulating fluidized bed reaction device, which comprises a reactor and a settler. The settler is communicated with the reactor, an outlet of the reactor is located in thesettler, a first flow dividing piece and a second flow dividing piece are arranged in the settler, and the first flow dividing piece and the second flow dividing piece are both located above the outlet of the reactor; wherein the first flow dividing piece is an assembly for reducing the upward gas speed of gas flow discharged from the outlet of the reactor, the second flow dividing piece comprisesa second cover body of which the cross section area is gradually reduced from bottom to top, openings are formed in the uppermost end and the lowermost end of the second cover body, and the first flow dividing piece is located in the second flow dividing piece. According to the circulating fluidized bed reaction device, the separation efficiency of oil gas and a catalyst is improved under the condition that the gas amount and the diameter of the settler are not changed.

Description

technical field [0001] The application relates to a circulating fluidized bed reaction device, specifically, a reaction device for catalytic dehydrogenation and cracking of alkanes, more specifically, a reaction device for rapid separation of oil gas and catalyst in a settler for catalytic dehydrogenation and cracking of alkanes, which belongs to petrochemical field. Background technique [0002] In the catalytic dehydrogenation of alkane, catalytic cracking of alkane and cracking fluidized bed reaction in the petroleum field, the separation efficiency of oil gas and catalyst is a very important factor. There are mature technologies. Researchers' research in this area is mainly aimed at heavy oil catalytic cracking. Early catalytic cracking processed wax oil, and the oil and gas after the reaction were relatively "light", and the settler was not easy to coke. Generally, a baffle, arc-shaped and other pipes were added at a certain distance from the outlet of the riser to ma...

Claims

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Application Information

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IPC IPC(8): B01J8/24C10G11/18C07C5/333C07C11/08C07C11/06
CPCB01J8/24C10G11/18C07C5/3332C07C2523/30C07C11/08C07C11/06
Inventor 李春义张凌云
Owner SHANGHAI SUPEZET ENG TECH CO LTD