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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As presented in the Appendix, substitution of expressions for the drag and gravity forces in Equation 1, the maximum allowable gas velocity, V Gmaxwhich prevents entrainment of liquid 8tth obtained. Its value depends on several factors including:. This service is not available if you are a URL user where you do not log in with an email address.
For the higher liquid load applications, i. 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. For detail of calculations procedure refer to chapter 11 of reference . Once the maximum gas velocity, V Gmaxthrough the vessel is determined by Equation 2, one can calculate edjtion minimum vessel diameter, D min by Equation 3.
This rate should allow all liquid droplets larger than 10 editkon to settle out of the gas. These values are presented in Table 1.
API Spec 12J
Posted on September 1, at For practical applications, the first term on the right hand side is replaced by K S. 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 .
If we consider a spherical liquid droplet with a diameter of D P in the gas phase two forces as shown in Figure 1 act on it. Equation 2 is called Souders-Brown  equation and K S is referred to as the design or sizing parameter.
Do you have a question? March 3, at 2: Especially for sizing horizontal separators. This dependency of K S on pressure and droplet size is presented in Figure 2 .
December 28, at 4: This is typically characterized by a K S —value, 12jj shown in Equation 2. Once the maximum, V Gmaxgas velocity through the vessel is determined by Equation 6, one can calculate the required minimum cross sectional area of vessel for gas flow by the following equation. References  provide the details on the droplet settling theory methods which can be used to more accurately quantify separator performance. Start Webshop Product catalog Product presentation.
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Gas-Liquid Separators Sizing Parameter | Campbell Tip of the Month
Entries RSS Recieve follow up comments updates: Separators outside the scope of this specification include centrifugal separators, filter separators and desanding separators. 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.
This product can only be purchased electronically by customers who have a web subscription agreement. The Souders-Brown method is limited in 12i it is based on the average droplet size, but cannot quantify the amount of liquid droplets exiting the gas gravity section.
There are several sources that one can look up the K S —values for different applications. NOK 1 ,00 excl.
One can also use the appropriate value of K S to size the mist extractor in the vessel. If you need editikn be able to add standards to the monitoring service, you must register as a user with your own username and password. The agreement lasts for three years, and the fee is charged once per year. References  provide mesh pad examples. The K s method, Equation 2, is an empirical approach to estimate the maximum allowable gas velocity to achieve a desired droplet separation.
For horizontal separators, the sizing depends on in addition to the droplet size, density of gas editkon liquid phases, and gas velocity separator effective length, L eand the depth available for gas flow, h Gi. Vane packs, like mesh pads, capture droplets primarily by inertial impaction.
Read more about subscriptions. Access to the horizontal separator sizing is by subscription.
Leave a Reply Cancel reply Your email address will not be published. Along with inlet devices.
The selection, and design to a large degree, determine the amount of liquid carryover remaining in the gas phase. Table 6 provides vane pack performance characteristics [3, 5, 8]. Mesh pad K S deration factors as a function of pressure . The moment new editions of the standards you monitor are released, changes are made, or appendixes are published, you will be alerted by email.
In the December tip of the month TOTM , we discussed troubleshooting of gas-liquid separators for removal of liquids from the gas stream edtion the separator. What technique can I use to design a gas liquid separator for coupling analytical instruments e. If the inlet liquid load is low, 1 above may not be important if the mist extractor can handle the liquid.