Buy API 12J: SPECIFICATION FOR OIL AND GAS SEPARATORS from SAI Global. Status: Check Published. Norwegian title: Specification for Oil and Gas Separators, Eighth Edition. English title: Specification for Oil and Gas Separators, Eighth. API SPEC 12J: Specification for Oil and Gas Separators. API SPEC 12J. Edition, October Complete Document. Specification for Oil and Gas.
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For vertical separators with no mist extractor devices, Chap 11, Vol 2 of the Gas Conditioning and Processing book presents K S as a function of pressure and liquid droplet size .
Recieve new post updates: For practical applications, the first term on the right hand side is replaced by K S. If we consider a spherical liquid droplet with a diameter of, D Pin the gas phase two forces as shown in Figure 1 act on it.
Do you have a question? He is the author of most Tips of the Month and develops technical software for PetroSkills.
May 26, at 7: May 30, at 2: The drag force, F Dis exerted by flow of gas and gravity force, F Gis exerted by weight of droplet. April 22, at 9: Notify me of new posts by email. This specification covers minimum requirements for the design, fabrication, and plant testing of oil and gas separators and oil-gas-water separators that are used in the production of oil and gas, and are located at some point on the producing flow line between the wellhead and pipeline.
Historically the Souders-Brown equation has been employed as it can provide reasonable results and is easy to use, but has shortcomings in terms of quantifying separator performance. Sizing of the horizontal separators are more complicated.
Moshfeghian has presented invited papers in international conferences. There are several sources that one can look up the K S —values for different applications. Knowing the actual gas flow rate through the vessel, one can use K S parameter to determine the maximum allowable gas velocity through the vessel and determine the required separator diameter.
The software there does what is not available elsewhere. It would be more useful if nozzle sizing were also included. Along with inlet devices. Schematic of the forces acting on a liquid droplet in the gas phase . Leave a Reply Cancel reply Your email address will not be published. Please note that extra delivery cost and delivery time may apply for products ordered as hardcopy, as the products must first be shipped from our suppliers overseas.
If you need to be able to add standards to the monitoring service, you must editioh as a user with your own username and password. This dependency of K S on pressure and droplet size is presented in Figure 2 .
Mesh pads are the most common type of mist extractors used in vertical separator applications. Some folks want its length to be less than 4 feet. Did editioon enjoy this post? Typical mist extractor in a vertical separator .
September 11, at 7: Note for each droplet size a range of K S —values are given for a specified pressure. This ensures that you are always up-to-date and saves you both time and money.
API Spec 12J
The drag force acts to entrain the liquid droplet while the gravity force acts to pull it down and separating it from the gas phase. September 18, at 8: Your email address will not be published. Mist extractor capacity is defined by the gas velocity at which re-entrainment of the 8tn collected in the device becomes appreciable.
Please editin me to discuss a possible consulting project with your company regarding the design of gas-liquid separators. Mesh pad K S deration factors as a function of pressure . The 8gh row of Table 2 provides the average absolute percent deviation AAPD of the predicted K S by the proposed correlation from the corresponding values of Figure 2 values.
Once the maximum gas velocity, V Gmaxthrough the vessel is determined by Equation 2, one can calculate the minimum vessel diameter, D min by Equation 3.
For this application length is mainly doing 2 things: Thanks for your reply.
The two curves for micron droplet size in Figure 2 were divided into 4 and 2 segments based on pressure range for the lower and upper curves, respectively. Can you tell me how the length of a Vertical Gravity Separator is sized once the diameter is calculated?
Gas-Liquid Separators Sizing Parameter | Campbell Tip of the Month
The benefits of a subscription: If the horizontal gas velocity profile is expected to be fairly uniform would need more details to determine this then 2 might not be a concern either. The design parameter, K Sin the Souders-Brown equation is an empirical parameter and is a key factor for the sizing the gas-liquid separators vessel diameter as well as for determination of the mist extractor diameter.
Droplet settling theory method, 2. Each segment was fitted to a linear equation in the form of Equation 7 and its regressed coefficients e and f are presented in Tables 3A and 3B for FPS and SI units, respectively.