Process for treating gaseous effluents developed in coffee roasting installation

Patent metadata

Field	Value
Publication number	US-10773208-B2
Application number	US-201615768058-A
Country	US
Kind code	B2
Filing date	Oct 14, 2016
Priority date	Oct 16, 2015
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A process for treating gaseous effluents developed in a coffee roasting installation making it possible to treat gaseous effluents developed in a coffee roasting installation, in which the effluents are passed through an oxidative catalytic converter. Within the catalytic converter use is made of a catalyst selected from the group including: a) a catalyst including a porous faujasite support containing copper oxide nanoparticles in a quantity of between 2% and 7% of the total weight of the catalyst; b) a catalyst including a porous γ-alumina support containing copper oxide nanoparticles in a quantity of between 2% and 7% of the total weight of the catalyst; and c) a catalyst including a mesoporous zeolite or silica support containing iron nanoparticles in a quantity of between 2% and 7% of the total weight of the catalyst.

First claim

The invention claimed is:

1. A method for processing the gaseous effluents developed in a coffee roasting installation ( 1 ), wherein said effluents are conveyed through an oxidising catalytic converter ( 5 ),
and wherein in said catalytic converter use is made of a catalyst comprising a mesoporous silica support, consisting of iron nanoparticles in an amount comprised between 2% and 7% of the total weight of the catalyst.

2. The method according to claim 1 , wherein said mesoporous silica is an SBA-15 silica.

3. The method according to claim 1 , wherein before being admitted to the catalytic converter said gaseous effluents are heated to a temperature comprised between 350° C. and 500° C.

4. The method according to claim 1 , wherein said iron nanoparticles are provided in an amount equal to 5% of the total weight of the catalyst.

5. The method according to claim 1 , wherein before being admitted to the catalytic converter said gaseous effluents are heated to a temperature comprised between 400° C. and 450° C.

6. The method according to claim 1 , wherein said iron nanoparticles are deposited on said supports with the Incipient Wetting Impregnation (IWI) technique.

7. A method for processing the gaseous effluents developed in a coffee roasting installation ( 1 ), wherein said effluents are conveyed through an oxidising catalytic converter ( 5 ) and wherein in said catalytic converter ( 5 ) use is made of a catalyst comprising a porous γ-alumina support consisting of nanoparticles of copper in an amount comprised between 2% and 7% of the total weight of the catalyst.

8. The method according to claim 7 , wherein before being admitted to the catalytic converter ( 5 ) said gaseous effluents are heated to a temperature comprised between 350° C. and 500° C.

9. The method according to claim 7 , wherein said nanoparticles of copper are provided in an amount equal to 5% of the total weight of the catalyst.

10. The method according to claim 7 , wherein before being admitted to the catalytic converter said gaseous effluents are heated to a temperature comprised between 400° C. and 450° C.

11. The method according to claim 7 , wherein said nanoparticles of copper are deposited on said supports with the Incipient Wetting Impregnation (IWI) technique.

Assignees

• Lavazza Luigi Spa

Inventors

• Furfori Stefania
• Zattarin Luciano
• Deorsola Fabio Alessandro
• Bensaid Samir
• Russo Nunzio
• Fino Debora
• Pirone Raffaele
• Piumetti Marco

Classifications

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title

• B01D2255/50

  Zeolites · CPC title

• B01D2257/70

  Organic compounds not provided for in groups B01D2257/00 - B01D2257/602 · CPC title

• B01D2255/20738

  Iron · CPC title

• B01D2255/20761

  Copper · CPC title