Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Vertical sieve plate used for fluidized bed

Inactive Publication Date: 2013-08-14
NORTHEAST GASOLINEEUM UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It effectively improves the mass transfer efficiency between the bubble phase and the emulsified phase in the bed, and can also greatly reduce the axial back-mixing of the gas phase and the particle phase in the bed, but its operating line speed is lower than that of the fast bed and pneumatic conveying bed. Operate only in bubbling and turbulent fluidization regions

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
  • Vertical sieve plate used for fluidized bed
  • Vertical sieve plate used for fluidized bed
  • Vertical sieve plate used for fluidized bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Vertical sieve member with one hood:

[0016] The vertical sieve plate member 19 is the core part of the fluidized bed, and when the specification of the fluidized bed is small, its structure consists of figure 1 combine figure 2 and image 3 As shown, it includes a circular support plate 1, a cap 2 and an overflow pipe 3, wherein the diameter of the support plate 1 is greater than the inner diameter of the fluidized bed; two symmetrical overflow pipe holes 1- 1. The distance between the centers of the two overflow pipe holes is 0.52-0.86 of the inner diameter of the fluidized bed; a circular plate hole 1-2 concentric with it is provided on the support plate 1, and the circular plate hole 1-2 is connected with the support plate 1 The diameter ratio is 0.19-0.28, and the optimum value is 0.25; four solid fluidization holes 1-3 are evenly distributed on the support plate 1, and the diameter ratio of the solid fluidization holes 1-3 to the circular plate holes 1-2 is 0...

Embodiment 2

[0023] Vertical sieve member with multiple hoods:

[0024] When the size of the fluidized bed is large, the number of caps 2 and plate holes 1-2 on the support plate 1 can be one or more, and the specific number n is determined by the cross-sectional area A of the support plate in the fluidized bed, the cap 2 The diameter of the initial fluidization velocity u mf and the gas velocity u of circular plate hole 1-2 i OK, specifically satisfy the formula u mf A=nu i A i , where A iFor the area of ​​each circular plate hole 1-2. The circular plate holes 1-2 and the caps 2 are evenly distributed on the support plate 1, and the distance between the centers of two adjacent circular plate holes 1-2 should meet the following conditions: the gas-solid separation holes on the adjacent caps 2 2-3 The ejection curves of the ejected solid particles just converge or are tangent at the midpoint of the distance. The principle of arrangement of the plate holes 1-2 and the cap 2 on the supp...

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 vertical sieve plate used for a fluidized bed. The vertical sieve plate comprises a circular support plate, a cover hood and an overflow pipe, wherein an overflow pipe hole, a solid vulcanization hole and a circular plate hole are formed on the circular support plate; a solid-gas separating hole is formed on the cover hood; a clearance is reserved between the cover hood and the circular support plate; an overflow weir is formed after the overflow pipe is fixed in the overflow pipe hole; and positioning parameters for all parts are provided. The problem that a traditional fluidized bed is low in vulcanization quality is solved. The vertical sieve plate for the fluidized bed provided by the invention has the advantages that the vertical sieve plate is free from airbubbles, gas has many opportunities to contact with solid materials in the fluidized bed, the utilization rate of space in the fluidized bed is obviously increased, the fluidizing state is excellent, the fluctuation in laminated pressure drop is small, the operation is stable and the processing capacity is large.

Description

technical field [0001] The present invention relates to an internal for use in a fluidized bed. Background technique [0002] Fluidized beds are widely used in industry because of their good heat and mass transfer properties and fluid-like particle transport. The gas-solid fluidized bed is the most widely used fluidized bed, but due to the existence of air bubbles, it is easy to cause gas short circuit, which makes the gas flow seriously deviate from the plug flow, and has a significant impact on the reaction. At the same time, the serious back-mixing of solid particles in the gas-solid fluidized bed will cause uneven distribution of the residence time of the particles in the reactor when the solid particles need to be continuously removed, resulting in a decrease in the average conversion rate at the outlet of the solid particles. [0003] In order to break the air bubbles, inhibit the coalescence of air bubbles and particle agglomeration, improve the fluidization quality,...

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 Patents(China)
IPC IPC(8): B01J8/24B01J8/34
Inventor 董群张健伟祝宝东
Owner NORTHEAST GASOLINEEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com