[Gasification] SPAM: Re: Small Scale Industrial Gasifiers

Doug doug.williams.nz at gmail.com
Tue Apr 18 04:59:41 CDT 2017

Hi Nicolo and Gasification Colleagues,

Nico would you please explain the definition of MP2 as it is not a 
familiar abbreviation within my knowledge.

Monitoring engine oil contamination can be quite an interesting activity 
using any type of fuel, and the basics are simple to apply without 
resorting to special equipment. If you link to the Fluidyne Archive


Scroll down to the Archive File:  Producer Gas Engine Oil and Soot,  you 
can read more about how to do it. I also have a more detailed write-up 
that we used to hand out to read the oil spot blotters. If the interest 
is there, I will dig it out of the box files and post it for those 

In regards to relying on the color of the oil as indication of the 
amount of insolubles it contains, this is only relevant if the pH Total 
Base Number (TBN) remains high. If the gas moisture levels are masked by 
reheating the filtered gas, then that moisture will rapidly deplete the 
pH and the oil will move into an acid state. Two thirds of all engine 
wear is actually acid erosion, not particle abrasion. If soot is being 
carried in suspension, it will drop out to form sludge and the oil will 
look perfectly clean. You can expect the oil to darken immediately after 
oil changes, as the anti-oxidant additive heats and creates the first 
darkening of the oil. Good quality Gas Engine Oil has a high TBN, but 
then so does Diesel Engine Oil, so both are good for producer gas 

The other effect of moisture in producer gas is that it slows down the 
flame speed of combustion and gas continues to burn out of the exhaust 
valves causing seat recession and CO emissions.

Hope this might be of interest.

Doug Williams,


On 18/04/17 19:56, Nicolò Cerni wrote:

> Hello Jess,
> thanks for your interest, we have known APL for 4 years now
> we purchased from them a demo pilot back in 2013 and lost 30.000 Euros
> because they cancelled our order 2 weeks before delivery
> at that time they had paramount gas cleaning problems, I cannot 
> comment the unit
> you refer to because we do not know it , how ever we have a 
> mathlab hologram formula to  quick check
> efficiency of any gasifier, it is based on CFD computerized Fluid dynamcs
> ( Denver protocol). we would be pleased to analyse the system if you 
> give  us
> some tech specifications + brochure ...
> The efficiency and quality is normally checked in 2 phases, gasifier 
> outlet and filter system outlet
> we have a US Made patent pending gas analyser, it pings the syngas 6 
> times per minute
> and reports the matrix, after the filter we have a debimeter ( Mass 
> flow sensor ) with integrated IR dust sensor measuring the particulates
> Immagine incorporata 1
> another good measure is the lub oil optical inspection glass, on the 
> cogen engine, as you know MP 2 cannot be easily detected, but over 
> time MP2 sets down in the lub oil and if it gets too dark is time for 
> motor cleansing
> regards
> Nicolo

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