1 reply to this topic

[ctellison]

We have a molten sulfur storage tank 86'D by 21'H connected to a vapor recovery system.  The vapor recovery system will be disconnected and the tank will be vented to the atmosphere. Tank details are:

• 288 deg F at sulfur/air interface in tank (tank air temp is lower than 288F)
• quantity (10), 8 inch goose neck vents on the perimeter of tank for in-breathing/out-breathing

A chimney (vertical pipe out of the top) will need to be designed to vent 30,000 scfh to the atmosphere to keep H2S conc. below 1%.  

 

Options for a design basis are:

1. Natural convection based on closing goosenecks vents and chimney design to obtain desired airflow
2. Install eductor/ejector on the chimney to maintain desired airflow through tank (this seems the better alternative)
3. Something we haven't thought of yet.

 

I am looking for references to formulas that will address this issue or an example so that I can begin to develop basis for design.

 

Thanks for any information you may provide

[fallah]

Hi,

 

Per i had seen before, adequate goose neck vents located at optimum safe location sufficiently away from normal access walk ways can do the job...