In refineries, offshore production and oil field reflooding, process water and steam condensate can be contaminated with oil. When this happens, the oil-laden condensate can cause maintenance and operating problems in downstream equipment. The valuable oil is also wasted since it's difficult and costly to recover.

Our coalescer is a simple, maintenance-free oil-water separator. It's a continuous process that can achieve an oil-water separation efficiency of 95% and above. That means process steam condensate is virtually oil-free so there's no oil carryover to the boiler. Additionally, our coalescer provides an easy cost effective means of recovering entrained oil.

Precoat-type filters are the traditional means of removing oil from petroleum refinery condensate. These filters require frequent backwash and the oil-saturated discharge they produce must be handled through the plant waste system.

The coalescer, on the other hand, produces a clean condensate and recovers water-free oil. No further handling or tratment of effluent water is required. Also, our system offers a number of other advantages:

• Simplicity of design and operation
• There are no moving parts, and therefore the level of maintenance is low. The only removable interbnals are the inlet headed and the strainers.
• The level of manpower is low, sample collecting and guage reading only.
• Low treatment costs and higher availability
• The oleophilic properties are built into the resin, and therefore, there is no reliance on either plant operator or pump reliability for chemical dosing (polyelectrolyte, etc.) This also makes plant operation independent of flow variation and the consequentia; need for chemical dosage variation.
• No chemical addition is usually required for precoat or body feed; therefore, there are no additional waste disposal problems.
• The resin has excellent thermal stability and has been designed for operation up to 250 F. The advantages of this high operating temperature are:
  • heat exchangers are not required on the influent to the coalescer
  • the heat content of the feed stream is retained and make a significant contribution to the energy requirement of any system in which it is recycled.
• The resin is guaranteed for one (1) year and has a ling service life. One installation has been operating satisfactorily for over seven (7) years without any apparent deterioation of the olephilic material or loss of trated water quality. The above guarantee is based on water quality encountered during testing and the system being operated according to the Graver instruction manual.
• The process is continuous and self-regenerating.
• The resin can be operated over a wide pH range (pH 2-12)