5 replies to this topic

[seth]

Dear Technical Experts,

I am in the design stage of our New blasting Facility. i want to seek your technical advise and recommendation whether the attached layout together with my query are correct or not. this my first time to design a Sandblasting Facility wherein i'm facing difficulty whether i'm going to use the 924 gallon receiver tank or to design another bigger capacity. please advise.

Thanks

Seth

Attached Files

•  Sandblasting_system_design.xls   30.5KB   41 downloads

[Art Montemayor]

Seth:

You submitted a very good, detailed query submittal.

This has enabled me to form a quick and accurate analysis of what you propose. My comments are included in your workbook for your review, which I am posting as Rev1.
 Sandblasting_System_DesignRev1.xls   45KB   40 downloads

[seth]

Art;

Thank you very much for the valuable contribution and suggestion to my on going project, It encouraged me to analyzed and study this chellenging task, anyway i marked the other necessary parameters in the attached sketch rev.2. please let me know some suggestion and correction.

Once again, thank you very much


Seth

Attached Files

•  Sandblasting_System_DesignRev2.xls   53KB   25 downloads

[Art Montemayor]

Seth:

You labeled your compressor discharge as being at 600 oF absolute.

This can't be possible; an air compressor can't tolerate 600 oF. Also, the Fahrenheit temperature scale is NOT AN ABSOLUTE scale. I don't know what kind of compressor(s) you are using, but a conventional reciprocating, 2-stage compressor would normally have its discharge temperature at about 300 to 350 oF (maximum). Any temperature above that value and lubricating oil starts to break down and you run the danger of a compressor explosion.

When lube oil is continuously heated at temperatures in excess of 350 oF, it starts to decompose into various gums, cokes, and gases. The gases can ignite in the prescence of compressed air (oxygen) and cause a serious compressor explosion that can kill or maim people. I don't think you want to go there.

Can you clear this figure up, for my peace of mind?

[seth]

Art,

i'm so sorry if the indicated unit of temperature that i changed before did not incorporate properly, it is in degree Rankine instead of degree F

thanks

seth

[seth]

Art;

Please find attached revised sketch correcting the temperature unit from Degree F to Degree Rankine.

Thanks,

seth

Attached Files

•  Sandblasting_System_DesignRev3.xls   53KB   48 downloads