A custody transfer mixer is indispensable in the homogenization of and water prior to sampling in custody transfer pipelines.
These mixers are designed specifically to meet all standards and requirements for fiscal measurement/custody transfer like ISO 3171 and API 8.2 standards.
A custody transfer mixer is usually installed upstream in transfer lines for sampling crude oil. These ensure that the water and bottom sediment get completely dispersed throughout the stream for optimum metering performance at lowest possible cost.
The automation level of these mixers is perfectly reliable as also their distribution over the widest possible flow, variable pipe sizes, and water droplet size.
A custody transfer mixer is installed primarily in sampling lines for petroleum, particularly in tank truck terminals and ships. They are also seen in refinery transfer lines and work in tandem with a LACT unit, which compulsorily requires the right metering.
These mixers come with weld neck ends or flanges that can be welded immediately. To make things simpler, they also have a 2-inch flanged port for an automatic sampler connection.
Since a custody transfer mixer is installable in both vertical or horizontal pipelines, the perfect mixing power is achievable. When installed on a horizontal line, the first element gets set off the center line by 30 degrees.
This implies that the bottom mixing element acts as a ramp and pushes that water up to the crude. On the other hand, the internal vortices push the flow back upstream, eliminating the water and bottom sediment that emulsifies.
The mixer’s design is moreover, customizable to suit specific on-site requirements like multiple auxiliary connections, length, temperature ratings and pressure. It doesn’t require any direct power source either and uniformly mixes the product as per API 8.2 & ISO 3171 standards.
The absence of any moving parts also eliminates the need for any sort of maintenance. The elements are also fully welded into the mixer housing while lengths, additional connections and cones/reducers can be accommodated into the mixer housing.
A custody transfer mixer finds widely use in the oil and natural gas industry because they are designed to determine crude oil’s hydrocarbon and water content accurately. This is important as calculating the right amount of BS&W in hydrocarbon streams is indispensable to custody transfer.
Inaccuracies can lead to significant financial losses when it comes to oil production upstream and downstream refining, transmission and distribution also. These are also economical to install and operate as compared to jet mixing.