Rick,
Yes, I have some experience with emissions measurements and control. Glad to assist. Others can also provide info, and can correct me when needed.
I deal with pyrolysis and then the combustion of the pyrolytic gases. Temperatures are for pyrolysis, that is up to about 750 C, and then the higher temperature from the burning of the gases.
Such low temperatures simply do not produce NOx. Shown to not be an issue with the pyrolysis of wood and other biomass. Let the authorities conduct their testing. They will not find impactful NOx.
CO2 is normal, and the sign of complete combustion.
CO is handled with adequate temperature and O2 in the air for burning. If present, get a better combustor. There are sensors for CO.
PM (Particulate Matter) is the “smoke”. It is much more EVIDENT, and easy to detect, but more difficult to measure if precision is needed and when the allowed amounts are quite low. For example, visible smoke is certainly bad. But simply “clear burning” is not necessarily clean to sufficient levels.
Emissions testing for cookstoves is more sensitive (I believe) than for char making because the stove is in the kitchen or close by and people are quite close. Char making is with larger sites. There are California and EPA rules to be followed.
Paul
Doc / Dr TLUD / Paul S. Anderson, PhD
Exec. Dir. of Juntos Energy Solutions NFP
Email: psanders@ilstu.edu<mailto:psanders@ilstu.edu> Skype: paultlud
Phone: Office: 309-452-7072 Mobile: 309-531-4434
From: biochar@yahoogroups.com <biochar@yahoogroups.com>
Sent: Saturday, August 25, 2018 1:14 AM
To: biochar@yahoogroups.com
Subject: Re: [biochar] comment on Namibia report. FW: [Stoves] Charcoal kilns in Namibia
Paul, Have you ever measured the emissions from a stove? I mean CO, NOX? Do you have any emissions control technologies employed on these systems?
One of the challenges with permitting a biochar machine in California are emissions. Emissions are important because there are so many people, in a large yet contained area, impacting human health.
At some point I remain optimistic we will create a market for biochar in California and will need to build production close to demand. But we will need to comply with air regulations particularly for NOX.
What I am sure of is that building a biochar machine in California will require emissions technology.
Stoves have no emissions controls, right? So to promote stove, you are promoting un-mitigated air pollution. Right? So is it OK to pollute in places where there are no emissions requirements?
Consider N2O, 300X the green house potential of CO2, stays in the atmosphere for over 100 years.
Help me undestand. Thank you.
Rick Wilson
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