Api Oil Water Separator Sizing

Oil droplets 150 microns in diameter and larger.

Api oil water separator sizing.

This design also known as an api separator generally provides a discharge oil concentration of 100 ppm based on a 150 micron droplet size. Oil water separators typically consist of three bays. 8 16 2016 5 28 46 pm. The api type design relies on a large water volume.

Below is a link to an api oil water separator sizing spreadsheet developed by hydro flo technologies. An api oil water separator is a device designed to separate gross amounts of oil and suspended solids from the wastewater effluents of oil refineries petrochemical plants chemical plants natural gas processing plants and other industrial oily water sources. Oil droplets from 20 to 150 microns in diameter. The information contained herein is the opinion of highland tank.

Oil water separator sizing calculation. 33 1 2 types of separator api tanks see figure 33 1 and plate separators are the more efficient oil separators. This correlates to a tank size that can be 5 times the size of an equally sized coalescing separator. Below is a sample shot of the spreadsheet.

The spreadsheet operates on microsoft excel 2003 or later. Oil water separators are typically the american petroleum institute api also called baffle type american petroleum institute 1990 or the coalescing plate cp type using a gravity mechanism for separation. Oil water separator oil droplet sizes definitions and meanings. When sizing an ows there are three primary factors to consider.

This design also known as an api separator generally provides a discharge oil concentration of 100 ppm based on a 150 micron droplet size. This correlates to a tank size that can be 5 times the size of an equally sized coalescing separator. By inputting the major design criteria you can solve for the separation chambers width to length to depth ratios. The name is derived from the fact that such separators are designed according to standards published by the american petroleum.

Sizing ows calculation per api 421 xls author. This calculation is based on the methods proposed. Following are the definitions and categories of different oil droplet sizes as defined by the american petroleum institute in the mid 1970 s. Must be 3fpm note.

The api type design relies on a large water volume. See figure 5 33 and figure 5 34. Api tanks were originally designed by the american petroleum institute api for use in refinery applications but modifications of the design can be used for stormwater treatment. This guide is intended to assist knowledgeable personnel with sizing a highland tank oil water separator.