[Gasification] Candle filter experiences

l linvent at aol.com
Mon Oct 30 19:29:53 CDT 2017

Solid filters always clog and cause maintenance and downtime issues. Electrostatic precipitators work better but at lower temperatures. Other solutions are available.


Leland T. "Tom" Taylor
Thermogenics Inc. 
Skype: ltt.invent

-----Original Message-----
From: James Joyce <james at jamesjoyce.com.au>
To: gasification <gasification at lists.bioenergylists.org>
Sent: Mon, Oct 30, 2017 5:54 pm
Subject: [Gasification] Candle filter experiences

We are just about to order candles for a flue gas filtration application at 350 deg C. We have also been asked to design a 400 deg C candle filter system for pyrolysis gas, for installation ahead of a condenser. 

This is one example (not necessarily the supplier we will use)   http://www.herding.de/files/hGlobal/Downloads/Technical_product_descriptions/ALPHA/UK/Herding_ALPHA_Biomass_Filterunit_uk.pdf 

I have read some of the case studies for larger gasifiers. I am interested to know what experiences, if any, have been had with candle filters at the smaller scale (say 2-20 tonnes per day of biomass gasified). Reliability is my main interest, number of hours between replacement ... and performance as far as downstream equipment such as condensers and engines are concerned.



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