Reactive solid/heat-transport gas reactor including a helical duct in which the solid and the gas flow in opposite directions

Patent metadata

Field	Value
Publication number	US-9513068-B2
Application number	US-201214123524-A
Country	US
Kind code	B2
Filing date	Jun 7, 2012
Priority date	Jun 7, 2011
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A solid/heat-transport and reactive gas reactor, including: a helical duct including an inlet and an outlet, the helical duct defining a helical bottom track on which a solid reagent can slide from the inlet to the outlet of the helical duct; a mechanism for bringing the solid reagent to the inlet of the helical duct; a mechanism for causing a heat-transport gas to flow in the helical duct, from the outlet to the inlet of the helical duct; a reservoir of solid reagent under the outlet of the helical duct; and a conveyor for conveying the reagent from a low point of the reservoir to the bringing mechanism.

First claim

The invention claimed is:

1. A solid/heat-transport and reactive gas reactor, comprising:
a helical duct including a first tube shaped as a helix and having an inlet and an outlet, the helical duct defining a helical bottom track on which a solid reagent can slide from the inlet to the outlet of the helical duct;
an opening configured to bring the solid reagent to the inlet of the helical duct;
means for causing a heat-transport gas to flow in the helical duct, from the outlet to the inlet of the helical duct;
a second tube shaped as a helix,
wherein the first tube is disposed in the second tube and defines a space between both of the first tube and the second tube, and
wherein the space between the first tube and the second tube is configured to have a heat-transport fluid pass through the space, so that heat exchange can occur between the heat-transport gas circulating in the first tube and the heat-transport fluid, a reservoir of solid reagent under the outlet of the helical duct; and

a conveyor configured to convey the solid reagent from a low point of the reservoir to the opening configured to bring the solid reagent to the inlet of the helical duct.

2. The reactor according to claim 1 , wherein the helical duct comprises a plurality of passages each emerging on either side of the helical bottom track, at a given turn on the helical duct, and in a directly lower turn of the helical duct.

3. The reactor according to claim 1 , wherein the helical duct is configured so that the solid reagent slides by gravity over the helical bottom track.

4. The reactor according to claim 1 , further comprising a vibrator configured to vibrate the helical duct to make the solid reagent slide over the helical bottom track.

5. The reactor according to claim 1 , further comprising a heat exchanger supplied by the heat-transport gas coming from the inlet of the helical duct.

6. The reactor according to claim 1 , wherein the helical duct has a vertical axis.

7. A solid/heat-transport gas method implemented by a reactor according to claim 1 , comprising:
sliding the solid reagent over the helical bottom track from the inlet to the outlet of the helical duct; and
making the heat-transport gas flow in an opposite direction in the helical duct from the outlet to the inlet of the helical duct.

8. The method according to claim 7 , wherein the solid reagent is a powder.

Assignees

• Wyttenbach Joel
• Papillon Philippe
• Tanguy Gwennyn
• Commissariat Energie Atomique

Inventors

• Wyttenbach Joel
• Papillon Philippe
• Tanguy Gwennyn

Classifications

• B01D53/08 Primary

  according to the "moving bed" method · CPC title

• F28F13/10 Primary

  by imparting a pulsating motion to the flow, e.g. by sonic vibration · CPC title

• B01J2208/00292

  involving reactant solids · CPC title

• B01D2253/106

  Silica or silicates · CPC title

• B01D53/261

  by adsorption · CPC title