Recent content by Shaman2

Thanks Stonecold I agree this is part of what is happening, no surprise since there is both a few % of O2 and some water vapor in the mix. The other compounding problem is that the sample point is at the distal end of a return line, before the gas goes back into the process loop. This placement...

Folks I have a problem with an online analyser sampling system. The analyser in question is a shamadzu benchtop uv/vis, which works very well when the analyte reaches it. The sampling system however is very problematic. The sample is return gas from a reactor for converting TiCl4 to TiO2 and...

Thanks 7anoter4 On my way to look at it now. Edd

I have recently been tasked with evaluating NOx (actually NOCl which would form from NOx and Cl2 if present) in our stack gas. We have had a few minor Cl2 excursions, but do not normally detect any NOx in our stack gasses. We have a to stage process. in the second toluene is burned as a energy...

Thanks, but I am just finding out how metallurgacally impaired I really am! I went to a web site referred to me by a friend, http://www.matweb.com/search/SearchComp.asp and put in this mornings readings, Fe 98 - 99%, Mn 0 - 2% for a search. It returned 3 pages of possibilities at 200 per page...

Does anyone know of a good online site for identifying metals by the XRF analysis? My background is in analytical and instrumental chemistry. However due to the retirement of a collegue I have been assigned the task of using the portable XRF for identifying materials that maintenance and other...

Update. Finally was able to remove examine and clean the worst offending system. Found (as per one of my suspisions)that ther was excessive build-up exterior to the sampling spears inside the process. However despite the previous rodding out , both spears were also blocked. Some build-up was...

Kenvlach Thanks, but unfortunately The "nearly" in my "nearly identical" description prevents that. There are problems with left/right handedness and distance between connections. I am currently having a new system made up for the worst performer and doing the paperwork for switching them out...

I need help diagnosing the failure of an eductor sampling system for a gas stream. We have 5 nearly identical systems, two of them have Karked it. the other three continue to work fine. I have prodded, probed, cleaned, washed and prayed and nothing seems to improve the function of the 2 that are...

Thanks for you input We already have pretty effiecient detectors to alert us to the presence of chlorine. We are now looking to quantify it. The detectors we have are designed for a lower level than the range we want to quantify, and are not able to be extended to the range we need for...

Does anyone have an online analyser for the detection of 0 -300ppm Chlorine in process gases and stack emmisions?

DPD test kit, available from most swimming pool supply stores. If the taps are not used regularly may have to flush a while to see the chlorine, especially if they are located some distance from the chlorination point. But then again if they are for potable water they probably could use flushing...

Could you supply more info on your current system? How many stages? How many membranes per stage in what configuration? What concentration factor at each stage? What type of membranes? What do you mean by "cheap and fast", undersized so you are trying to push more water through it than it's...

Thanks Guys You have verified my own opinion, Which I gave to management yesterday morning. Now I don't feel so "out on a limb".

Having purchased resin for our water system from a new supplier we found we had problems regenerating with our routine procedure. The response from the manufacturer when queried was that the resin had been poisoned with colloidal Silica. 1. this has never happened in the same system using...