Fluidized bed reactor

A fluidized bed reactor and reaction zone technology, applied in the field of desulfurization, can solve problems such as affecting the stable operation of the device and being unable to discharge the reactor.

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
View PDF14 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the fluidized adsorption reactor, the fine powder of the catalyst and the fine powder produced by the long-term wear of the particles will be elucidated into the sedimentation space of the fluidized bed for long-term suspension, so that the suspended particles have no chance to return to the dense bed of the fluidized bed , and cannot be discharged from the reactor, which will affect the stable operation of the device in the long run

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fluidized bed reactor
  • Fluidized bed reactor
  • Fluidized bed reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] In this embodiment 1, if figure 1 As shown, the structure of the fluidized bed reactor is as follows:

[0063] A partition body 15 is provided in the settling area 13, and the inclination angle of the partition body 15 is 20°. The upper part of the settling zone is provided with a metal filter tube filter, and the lower part of the settling zone is provided with 3 parallel gas-solid separation devices of the present invention uniformly distributed along the circumference, and the gas outlets of each gas-solid separation device are brought together to enter the upper chamber of the settling zone Chamber 16. At the same time, the angle α between the inner wall plate of the gas-solid mixed phase inlet section 6 of the gas-solid separation device and the vertical plane is 10°, and the angle β between the lower shell section 8 of the gas-solid separation device and the horizontal plane is 15°.

[0064] In this embodiment 1, the specific process is as follows.

[0065] The ...

Embodiment 2

[0071] Example 2 adopts the same method as Example 1 to carry out adsorption desulfurization, the difference is that only one gas-solid separation device 18 is provided in the lower chamber 17 of the settling zone.

[0072] Continuously for 500 hours. During the reaction process, the following indicators were monitored: (1) the composition of the obtained oil and gas product; (2) the dilute phase density in the upper space of the fluidized bed reactor settling zone, and the results are listed in Table 4.

[0073] Table 4

[0074] time / h 100 200 300 400 500 Product sulfur content / wppm 4.6 3.4 5.7 4.5 3.5 Antiknock Index Reduction Value* 0.59 0.5 0.61 0.64 0.57 Dilute phase density in the settlement zone / kg m -3

[0075] *: Based on the antiknock index of sulfur-containing gasoline as a hydrocarbon feedstock, where antiknock index=(RON+MON) / 2

Embodiment 3

[0077] Example 3 adopts the same method as Example 2 to carry out adsorption desulfurization, the difference is that: the angle α between the inner wall plate and the vertical plane of the gas-solid mixed phase inlet section 6 of the gas-solid separation device is 5°, and the gas-solid separation device The angle β between the lower casing section 8 and the horizontal plane is 10°.

[0078] Adsorption desulfurization conditions include: the contact temperature is 420°C, the pressure is 4MPa in absolute pressure, the sulfur-containing hydrocarbon feedstock enters the reactor at a speed of 0.3m / s, and the oil mixture in the settling zone flows at a speed of 3.5m / s Enter the guide air intake channel.

[0079] Continuously for 500 hours. During the reaction, the following indicators were monitored: (1) the composition of the obtained oil and gas product; (2) the density of the dilute phase in the settling zone of the fluidized bed reactor, and the results are listed in Table 7. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a fluidized bed reactor. The inner space of the main body of the fluidized bed reactor comprises a settlement zone and a reaction zone from top to bottom. An inclined separation body is hermetically arranged in the settlement zone and divides the settlement zone into an upper chamber and a lower chamber. The upper chamber is provided with a gas outlet. A gas-solid separation device is arranged in the lower chamber. A gas-solid mixed phase inlet section and a particle outlet section of the gas-solid separation device are located in the lower chamber. An exhaust pipe of the gas-solid separation device passes is communicated with the upper chamber through a gas delivery pipe passing through the separation body. The upper chamber is communicated with a return pipe which passes through the separation body and can stretch into a dense bed. The fluidized bed reactor can timely convey separated fine catalyst particles into the dense bed of the reactor so that the amount of the suspended catalyst particles in the settlement zone of the fluidized bed reactor is significantly reduced.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a fluidized bed reactor. Background technique [0002] With the continuous improvement of environmental protection requirements, the indicators of gasoline sulfur content are becoming increasingly stringent. This puts forward higher requirements for gasoline desulfurization technology. At present, one technology of gasoline desulfurization is fluidized bed desulfurization method. [0003] The fluidized bed desulfurization process is a reactive adsorption desulfurization process, that is, a fluidized adsorption reactor is used. The reaction product leaves the reactor through the dust filter installed on the top of the reactor, and the separated solid particles of the catalyst pass through the upper part of the reactor. The discharge pipe below the bed material level leads out of the reactor, and then enters the regenerator and reducer for regeneration and reduction. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24C10G45/04C10G45/20C10G45/22
CPCB01J8/24B01J2208/00017B01J2208/00539B01J2208/00548B01J2208/00752B01J2208/00893C10G45/04C10G45/20C10G45/22C10G2300/1037C10G2300/202
Inventor 朱丙田侯栓弟武雪峰张同旺田志鸿刘凌涛韩颖张乐
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap