3 replies to this topic

For part of my final year design project i am designing a 20,000 m3 atmospheric propane storage tank, (temp -42 oC pressure 1bara +- .5 bar) my question is

As the En/Bs states that idealy all inlet/outlets should be in the roof (to min leak potencial) , what is the best means of pumping a large flowrate out (upto 760m3/hr) ?

At the moment a submerged pump is an option however i cant find a conpany that stock such a pump. Where do i look?

Any positve comments welcome

[Qalander (Chem)]

Dear Simoncpe Hello/Good Morning,

Please Search through the forum. I recall Art did give guidance related to LPG etc. pumping early on!

Best regards
Qalander

[Art Montemayor]

Simon:

The best and most practical way to pump bulk flow rates of liquefied Propane at semi-cryogenic temperatures is to use what you are inferring - a submerged type of pump. These are the standard and established pump types in the LNG industry. We used these very successfully back in 1978 when I was working in the LNG Industry, working for El Paso LNG.

As a student, I can't imagine why you are interested "a conpany that stock such a pump". I don't think you can come up with the money to buy such a pump. And why would you?

Also, what does the acronym "the En/Bs" mean? We can't all be expected to know that.

Go to the following websites for information on these types of special pumps:

http://www.hitachi-p...mp/lng/lng.html

http://www.ngvglobal...ries-02164.html

http://www.uts.ae/detail.aspx?page=17

Carter Cryogenic Products Division (formerly J.C. Carter) has been the recognized leader in the field of cryogenic pumps since the inception in 1947. J.C. Carter pioneered the industrial submerged motor centrifugal pump for liquefied gases with temperatures ranging from ambient to cryogenic.

Since introducing this concept in 1959, J.C. Carter has delivered thousands of submerged motor pumps throughout the world. Hyundai Heavy Industries Co., Ltd. (HHI) signed a technical agreement for a cargo pump for LNG carriers with Carter Cryogenics of the U.S. The LNG carrier's cargo pump is a cryogenic pump at the bottom of containment tanks used to load and unload liquefied natural gas at -163oC. There are eight to ten pumps equipped on each LNG carrier. Under the technical agreement with Carter Cryogenics HHI will manufacture and market the pumps with plans to localize cargo pump production through the technical development and transfer of technology from Carter Cryogenics in early 2008.

Its mearly a case not having see anything like it before.

I dont feel as if i can disscuss something i know nothing about.


Sorry Bs (british standard)
EN ( what theyre now called)