Hi all,
My company is currently producing DNT(Di-nitro toluene), Nitric acid, ammonium nitrate. The DNT is used to make TDI for poly-urethane. All three chemicals are facing severe competition in the market.
Any suggestions for the new products based on these three chemicals will be highly...
Hope someone could provide me some advice on this.
I'm working at a large chemical complex in Korea.
Our 27years old firewater system consists of two main pumps, motor driven/engine driven and small jockey pump with total of 3miles underground waterpipe(Pipe dia: 8inch). Our firewater pressure...
I heard that some companies replaced the old steel underground piping with polyethylene pipe in the recent years. Also, the polyethylene pipe can withstand some 10bar and the price of 10inch(250A) PE pipe is some 28USD per one meter. Is PE pipe strong enough to the shock, like water hammer? If...
Our underground fire water pipeline is built some 27years ago on the site of three nitric acid plants. Due to acid spillage caused by leaky process pipeline over many years, the soil on the site is found to be heavily polluted by acid.
Many leak points found on the fire water pipeline these...
Dear unclesyd, abecmex;
Thank you very much for your interest.
How about to remove the mesh screen in the suction of the pumps and install a new strainer in the inlet of the tank as following drawing?
http://www.antlove.com/fw.jpg
<IMG SRC=http://www.antlove.com/fw.jpg>
<A...
Hope someone could recommend me a appropriate mesh size for suction strainer of fire water pumps.
We have installed fire water pumps recently as bellows.
1) Main pump #1: 3,000 GPM (Driven by electric motor)
2) Main pump #2: 3,000 GPM (Driven by diesel engine)
3) Jockey pump : 300 GPM...
Hope someone could recommend me the appropriate mesh size for suction strainer of fire water pumps.
We have installed fire water pumps recently as bellows.
1) Main pump #1: 3,000 GPM (Driven by electric motor)
2) Main pump #2: 3,000 GPM (Driven by diesel engine)
3) Jockey pump : 300...
Dear ED
Thank you very much for your kind reply.
We have to empty and clean the concentrated nitric acid storage tanks during next year.
The two tanks are made of aluminum and 1,500MT, 2,000MT each.
I'm looking for an expert who will carry out the emptying and cleaning work of concentrated...
The Korean law states that the all storage tanks for dangerous chemicals(**see below) of over 1,000 KL capacity must be inspected internally every 10 years.
The inspection includes,
1) The welding seams of the bottom plate must be inspected using non-destructive test method.(15% of all welding...
ghopkins,
Thank you for your good advice.
Our CNA tanks are equiped with breather valves, set +-11.7"WC(+-300mmAq). We've never experienced vacuum condition in the tank, but we will be cautious on vacuum in any situation.
Hachsaw,
The new rules specify the followings.
1) The welding seams of the bottom plate must be inspected using non-destructive test method.(15% of all welding seams)
2) The thickness of the bottom plate must be checked.
3) Inspectors must enter the tank for vacuum box test.
The new rules does...
Unclesyd,
There is no place in the system for the diluted acid.
I suppose there is lots of aluminum nitrate in the bottom of the CNA tank.
It seems like a good idea to lease trailers.
It's not easy to find a enough space for a temporary storage tank around the CNA tank area.
How is...
Thanks for your concern.
I'm working at Fire and Safety division of Huchems fine chemical corporation in Rep' of Korea.
The company's website is http://www.huchems.com
Huchems corp. is the Korea's largest producer of Concentrated Nitric Acid(CNA: 98%, white) with a capacity of 104,300 MTPA...
We have three 18,000 tons of refrigerated ammonia storage tanks. The small water spray system is installed on top of the vent valves.
We also have two warm ammonia storage tanks with 100ton capacity. These tanks are installed with water spray system.
<Built horizontal with dished ends>
DIA...
