[Gasification] Gasification Digest, Vol 30, Issue 1: gasifier scrubber water

David Coote dccoote at mira.net
Fri Feb 1 17:05:01 CST 2013


One point that comes through when discussing use of these systems with 
potential small-scale operators is their lack of enthusiasm for picking 
up extra work. They're often comfortable with, for example, using a 
diesel generator for backup as they're familiar with what this will 
require them to do.

If a small-scale gasifier was producing significant amounts of water 
then IMO disposal would have to be simple, cost-effective and within 
local waste management guidelines.


On 2/02/2013 7:00 AM, gasification-request at lists.bioenergylists.org wrote:
> Message: 8
> Date: Thu, 31 Jan 2013 16:53:33 -0800
> From: "Tom Miles"<tmiles at trmiles.com>
> To: "'Discussion of biomass pyrolysis and gasification'"
> 	<gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Gasification Digest, Vol 29,	Issue 7:
> 	scrubber water
> Message-ID:<023301ce0016$8fddee90$af99cbb0$@trmiles.com>
> Content-Type: text/plain;	charset="us-ascii"
>
>    
>> >How were they handling the scrubber water, Tom? A colleague visited a
>>      
> reasonable size gasifier in Europe where the water was stored in a tank.
> Once this tank was full their immediate option was to install another tank.
> Not ideal!
>
> There are many plants that haven't figured out how to deal with the scrubber
> water short of paying someone USD $0.70-$1.50/gallon to treat it. Some
> systems make less water, use recovered heat to concentrate the pollutants,
> and either recycle the pollutants as solids to the gasifier and/or use part
> of the gas to burn out the residual moisture and pollutants. The cost is
> lower net conversion to heat and power. The benefit is being able to convert
> fuels that re otherwise difficult to burn or gasify.
>
> Tom





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