Title: Spouted bed with venturi draft tube and method for improved gas-solid contacting

Abstract

A Venturi draft tube spouted bed and method are disclosed that enables scale-up with small particles and improves heat and mass transfer by increasing material turnover rate. A Venturi-style eductor has been incorporated into the spouted bed draft tube to provide suction at the bottom of the bed to better entrain material and reduce the propensity for dead zones at the bottom of the narrow conical section.

Inventors:

Yelvington, Paul E.; Schwartz, Nicholas R.; Blaise, Michael J.

Issue Date:

2020-05-19

Research Org.:

Mainstream Engineering Corp., Rockledge, FL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1650913

Patent Number(s):

10654009

Application Number:

15/906,299

Assignee:

Mainstream Engineering Corporation (Rockledge, FL)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01F - MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01F - MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING

B01F2215/0431 - Numerical size values, e.g. diameter of a hole or conduit, area, volume, length, width, or ratios thereof

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J2/006 - {Coating of the granules without description of the process or the device by which the granules are obtained
B01J2/16 - by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
B01J2208/00902 - Nozzle-type feeding elements
B01J4/002 - {Nozzle-type elements
B01J8/245 - {Spouted-bed technique}
B01J8/386 - {internally, i.e. the particles rotate within the vessel}

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DOE Contract Number:  

SC0017108

Resource Type:

Patent

Resource Relation:

Patent File Date: 02/27/2018

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY