6" pipe, 2 feet long, built as a pyrolysis chamber for R&D, welded cooling jacket.
Gas side: T~ 600 C, P = 10-15 inWg vacuum,
Jacket: water, 40 psig, 20C in, 35 C out
R&D is over, we ran the system for a year, pyrolyzing salts and collecting the powders, all worked good... time to build a demo...
Hi all,
one of the potential pump vendors (gear pump) wants to coat
pump gears with DLC coating. Liquid I want to pump may contain up to 40% of nitric acid. Is the coating compatible with this application?
I heard a case of WC coating failing after 100 hrs in a gear pump pumping nitric acid...So...
I am kind of confused about this:
My title in the company I work for is "Process Engineer" although the company nor the job description requires professional designation i.e. P. Eng (Canada, BC). Is it against the law if I use "Process Engineer" title on my business card? I don't have P. Eng...
I have an agitator with 304 SS shaft/impeller. It is used to dissolve metal nitrate which becomes acidic as it dissolves so I have HNO3 generated in-situ. I noticed that the resulting solution, instead of being transparent, turns into darkish, although still transparent liquid. I am thinking...
I saw somewhere interesting way of liquid pumping: instead of a pump, guy used simple pressurized vessel (gas from top) to push liquid through a pipe. Never thought about advantages of doing it that way. Although it was in a lab/pilot scale system.
Any comments?
I am considering buying a small regenerative blower (1 HP)
and default option is 1-phase motor. I want to control the speed using variable frequency controller.
Is there any advantage of getting 3-phase motor here?
Thanks,
Nick
I am looking at delivering powder slurry (ceramic, quite abrasive) to an atomizer. Flow rate is about 0.5 lpm. Now, the question is what kind of pump is better:
1. Progresive cavity type or
2. Double-diaphragm
Dilema:
#1 provides non-pulsating flow, but I would have to go with bigger pump...
I would appreciate any input to this problem:
50 acfm of gas stream (containing solids, NOx and steam) is filtered in a baghouse with a fan downstream. Gas T is 280 C, water partial pressure is 0.3 and I am having problems with "cold spots" in the baghouse and condesate forming inside and in...
Respected community members, I have one (only?) problem with my powder processing system and I hope someone will be willing to share his/her knowledge/experience. Here it is:
Experimentsl reactor is 12" ID, 3 ft long (with a cone at the end) and filter/fan downstream. Powder is fed from the top...
If someone has experince with draining condensate from a vacuum line, I would appreciate any hint/help:
Pilot-plant:
I have a line under vacuum (2" Hg). Gas mixture (containig solid particles) contains water which condenses during the start-up (until the whole line gets hot). I was thinking...
I have always worked with fans/cyclones in a way that I had to close dumper when starting a fan. Now I've got small fan with variable speed motor so I am thinking that this time I would just have to increase the speed slowly as pressure drop (this time I am using bag filters instead of cyclones)...
I have hot gas stream (H20, N2) from reactor. T=~1000 C. It contains fine particles (product) that go to filter. I have to cool it down but avoid condensation. I am thinking about quenching with water and air but that will just add more water to the system. I need advice on which way to go:
- I...
Hi,
I would appreciate any info (based on experience) on a small scale scrubber supplier for NOx. I went through the ThomasNet and apparently, there are many scrubber vendors.
I need to remove NOx from my pilot plant gas stream.
Thanks,
Nick
