Gas seperator / scrubber.
Gas seperator / scrubber.
(OP)
We have a prototype high temp incinerator, the exhaust gas which is urged along, at low pressure, by a vac pump which is way down stream in the cool area. When the gas leaves the incinerator it is at approx 600 deg C. but as it cools down there is a tar like substance that settles out and completely gums up the pipework etc. We are trying a simple home made wet cascade scrubber, but I'm sure this is not the best technique, would have thought the best place to deal with the problem is where the gas is quite hot. I think we are trying to re-invent the wheel, is there a "off the shelf" solution. Any ideas PLEASE ? .





RE: Gas seperator / scrubber.
There a many manufactures of scrubbers, here is a potential list of suppliers:
Anderson 200, Tri-Mer, Clean Gas systems, Advance Air Technology, GPI Corp., CECo Group, Koch-Glitsch Inc., Wheelabrator.
Hope this helps.
saxon
RE: Gas seperator / scrubber.
Unfortunately I am not a chemical engr. so I am struggling with some of the probs. Our incineration process is dealing with semi dried sewage. The scrubber water is returned to drainage system ( which just cant be right ). Regret I dont know the make up of the exhaust gas, we havent yet had it analysed.
The scrubber mnfrs you quote, I dont recognise the companies, are they US or European?
RE: Gas seperator / scrubber.
As for the straight incineration of sewage sludge, this stuff has all sorts of organics in it. Now I understand why you're getting "tar" condensation on the exhaust gas ducts.
Contact the above reps. they will be able to help you out.
Good Luck!
saxon
RE: Gas seperator / scrubber.
Regards
Gord
RE: Gas seperator / scrubber.
RE: Gas seperator / scrubber.
atulbhalla46@hotmail.com
RE: Gas seperator / scrubber.
RE: Gas seperator / scrubber.
RE: Gas seperator / scrubber.
RE: Gas seperator / scrubber.
The existing thermal incinerator fails to get rid of the smell & lets the fume through.
The tar is a problem as it will clog up scrubber, BioFilter & regernative thernal oxidiser beds quickly if not removed.
We suggest that either mist eliminators (low capital, high operating cost) or fluid bed scrubbers (high capital, low operating cost) could be solutions.
Hope this helps.
ctairman
info@cleanteq.com
RE: Gas seperator / scrubber.
You stated that you are incinerating semi-dried sewage.
First, what is the moisture content of the sewage?
Second, what fuel are you supplementing the incinerator with?
Third, was the sewage sludge limed up?
It is highly likely that you are gasing off the volatile solids and the volatile solids are not burning to completion. Thus, you are left with a tar-like substance that is a combination of sulfates, particulate matter and unburned sewage. Sort of similar to black liquor in pulp & paper mills.
Your problem can be solved by first predrying the sewage until moisture content is below 5%. Or reduce the feedrate of the sewage sludge.
Keep this in mind - any biomass with a high moisture content requires a much large boiler then bone dry biomass. The moisture must be flashed off prior to ignition of the biomass.
You can reach me at the following email: toddforet@usa.net
RE: Gas seperator / scrubber.
I agree with oxilume . Probably you are evaporating some stuff and condensing it again.
You should use a wet scrubber of the ventury jet type , but u will have to treat the water after it.
mmo
RE: Gas seperator / scrubber.
You need to treat the discharge from wet scrubbers.