James,
The price you stated for a dioxin test is just the analysis and does
not include the technician's travel time, set up time and sampling time, per US
costs.?
There is a method of on-stream continuous measurement that will give
analysis of all of the compounds presented in the standard you referenced that
will also include fixed gases to almost any molecular weight.?
I can't see how any bag or filter can be used to clean the gas.?
Sincerely,
Leland T. "Tom" Taylor
Thermogenics Inc.?
-----Original Message-----
From: James Joyce <[email protected]>
To: gasification <[email protected]>
Sent: Sat, Jun 28, 2014 12:23 am
Subject: Re: [Gasification] Clean Air Regulation requirements imposed
Thanks for your input Artem and Leland.
Leland we are working from a source separated feedstock ... but of course no
separation method is every perfect. As far as air toxics I think I will start
with the argument that if we get below the detection limit for a given species
when using good quality industrial analysers (not research lab instruments)
then
our job is done.
On a related note we normally use CO as an operational performance indicator
for
all hydrocarbon derived compounds... in our systems it is by far the most
prevalent residual gas species and in my experience is that is the last
compound
(apart from soot) to be oxidised completely in a biomass flue gas ... is that
the experience shared by others ?
One aspect we may have to face is questions about dioxins. We do all the right
things to avoid formation in terms of feedstock selection and operating
temperatures/residence times ... however we have not done actual measurements.
I
am told that Dioxin measurements are around $3000/analysis in Australia ... is
that the case elsewhere ? That makes performance data collection
prohibitively expensive. What are others doing for Dioxin analysis ?
Artem, bag filtering at 600 deg C is interesting ... it keeps you well above
the
Dioxin formation temperature range ... I could not see much detail on your
site.
Can you provide any more information on this ? Are you referring to Cerafume
bags like those described here:
http://www.albkleinco.com/cerafume-high-temperature-gas-filters/
Regards,
James
-----Original Message-----
----------------------------------------------------------------------
Message: 1
Date: Fri, 27 Jun 2014 14:50:23 +0200
From: "Artem Filimonov - TVT" <[email protected]>
Dear Sirs,
It is a really interesting discussion. I haven?t written yet. But I want to
share with all of you information regarding a fumes treatment part. As you can
see in signature the company name we deal with fumes treatment units. We work
mainly in renewable energy field such as gasification offering our systems to
clean the fumes. This is our main archived goals:
- Bag filtering systems, emissions < 1mg/Nmc, flue gas flow temperature
600
?C;
- A unique filtering system to DeDust ? DeNOx ? DeSOx, direct dedusting
at temperature 350 - 400 Celsius degree;
- Heat recovery systems.
Please be free to contact me for any issue,
Best regards,
Artem Filimonov
TVT Termoventiltecnica S.r.l.
Via Lo Stradone, 7
31050 Ponzano Veneto (TV)
Tel <tel:%2B39%200422%20609%20110> +39 0422 609 110 Fax
<tel:%2B%2039%200422%20612%20633>
+ 39 0422 612 633
Da: Gasification [mailto:[email protected]] Per
conto di [email protected]
Inviato: luned? 23 giugno 2014 0.35
A: [email protected]
Oggetto: Re: [Gasification] Clean Air Regulation requirements imposed on Waste
to Energy Plants
This standard is not uncommon and most of it is just verbiage to
cover as many sources as possible. If below detection limit, or not in the
input
gas, then it complies. The measurement is very expensive using standard US EPA
methodologies, but there is equipment that can be used to detect below the
standard methods of analysis and costs around the same cost as one
comprehensive
gas analysis, which could be
$35-60k in US terms.
The best way to comply is to remove as many of the contaminants as
possible before the fume incinerator or flare. I can go into more detail, and
indeed there may be a very inexpensive way of complying
if they would accept it, but I don't do it for free.
Sincerely,
Leland T. "Tom" Taylor
Thermogenics Inc.
-----Original Message-----
From: James Joyce < <mailto:[email protected]>
[email protected]>
Sent: Sat, Jun 21, 2014 4:36 pm
Subject: [Gasification] Clean Air Regulation requirements imposed on Waste to
Energy Plants
Some questions for the group. We have been asked to comply to the following
regulation regarding operation of our thermal oxidiser. My questions are:
1. Can any technology anywhere in the world claim to comply to this
regulation ? For example 99.99% destruction efficiency means that 100 ppmw
of
say formaldehyde in your process off-gas has to be reduced below 0.01 ppmw,
which I am sure is well below the detection limit of available detection
devices. How you demonstrate 99.9999% removal is another matter again.
2. How many pyrolysis plants are using the nuclear fission reactions that
would be necessary to destroy the metals in their list !
3. What work around are people using to deal with emissions regulations
that appear impossible to comply with ?
..... snipped
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