which filter is best to remove disolve water in liquid hydrocarbon(c7+)?

Question

this filter should be no corrosion effect on down stream of filter and it must remove water very well.

Answer 1

Salt. In refining, Extra coarse salt is used to remove disolved water from diesel. Also called Salt Drying. As long as your velocity doesn't carry over any salt, no corrosion issues will occur.

Answer 2

Try settling tanks or surge tanks. Three tanks side by side. The middle tank is separated from the left tank by a common wall with a space on the bottom. The tank on the right separated by a common wall that only goes about 3/4 up. Pump the water solvent mixture into the middle tank. Water will go to the bottom and solvent will go to the top, they will separate. Put a wall in the left tank such that water will flow from the middle tank under the space and into a column. Allow the wall in the left tank to go up about 2/3 such that water will spill into the rest of the tank. The Right side tank will likewise allow for solvent to spill over from the middle tank from the top. Liquid is pumped into the middle tank, pure solvent will spill into the right tank and water will flow under from the middle tank unto the first section of the left tank and over the wall that goes 2/3 s up into the second section of the left tank. Tank size is not an issue you can make them as large as you like. Float switches in the all tanks can be employed to start and stop pumps for automatic operation. Simple no moving parts no filters, no problem.

Answer 3

It depends upon the concentration of water in the hydrocarbon. If you are talking about two phase liquid, then you need a settler as described in a previous answer.

But once you get down to very low levels on the order of part per million levels, then you can use what is commonly referred to as a mole sieve. These are very common in laboratory use to keep reagents dry.

There are commercial large scale applications for drying of hydrocarbons, and a simple yahoo or google search for mole seive will give you a good starting point.

Here is just one of several links that I found.

http://www.deltaadsorbents.com/catalog.asp?k=molecular+sieve

Answer 4

Glassy filter