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hi all, i need to perform sizing calculation of Pressure Relief Valve (PRV) for Fire Water System. According to NFPA 20, if 121% of shuttoff pressure + max static pressure exceeds the rated system components, PRV shall be installed. in my case, the pressure is above the max allowable pressure...

hi all, could you please share to me a file about reciprocating sizing tutorial ? i am a junior engineer and i want to understand more about reciprocating compressor. is there any tutorial about sizing compressor using Ariel or Dresser Rand Software ? if any, could you please the tutorial ? :)...

dear all, i am a new junior engineer. I really want to understand about depressurization, i have read API RP 521 1997 edition and the FEED document of the depressurization of some facilities here, but to be honest, i still dont understand. could you please give/recommend me an article, books...

Dear all, I want to ask about crude oil dehydration processing. The wellstream which usually contains crude oil and water will be separated in Free Water Knock Out (FWKO) to separate the free water. The dehydration process is needed in order to reduce the emulsified water. As far as I know...

dear all, i need to evaluate the flare stack performance, the existing flare is designed to dispose around 50 MMSCFD natural gas , due to demand increasement from buyer, the flare shall be capable to handle 65 MMSCFD disposal gas (block discharge scenario governs the flow rate) i have some...

dear all, thanks for your responds :) herewith the forecast End of Year - Compressor Suction Pressure (psig) - Flow rate (MMSCFD) 1 - 500 - 65 2 - 450 - 63 3 - 380...

dear all, i am a junior process engineer in the oil and gas company for 6 months, and this is my first job. because of several reasons, i heard that my company wants me to be a corrosion engineer. is it ok for a person graduating from chemical engineering to be a corrosion engineer ? what about...

hi all, i want to ask about how to choose compressor type and their configuration ( 1x100%, 2x50% or 3x30%). this is for the natural gas field development ( 96% Methane, 65 MMSCFD, specific gravity 0.57, ACFM 3025 ) at the beginning of production, in the gas processing plant, the suction...

hi all, i am new in studying pressure relief system. i have tried to read API RP 521 and GPSA section 5 "relief system". but it lacks of manual calculation example, so i have confusion to apply the equations in those codes. 1. is there any handbook which provides the example of designing...

hi all, i need to design a two phase separator to separate natural gas 60 MMSCFD, 200 F, 400 psig from 1000 barrel water per day. i have some questions to be asked : 1. how much separator that i need to design ? i mean, do i need to design 2 units of separator (@ 30 MMSCFD) or is it enough to...

hi all, i want to evaluate the capability of existing piping (ASTM A 106, Sch 40) and pipeline (API 5L X65 sch 80) is it capable to be operated in low temperature (33 F) and pressure (530 psia) ? as far as i know, low temperature will give significant effect in brittleness, but how do i...

ok thanks all for your very informative responds :) If the wheel diameter is constant, change in pump wheel velocity can simplify the affinity laws to dp1 / dp2 = (n1 / n2)2 n = wheel velocity - revolution per minute - (rpm) dp = head or pressure but...how do i calculate the rpm ? if i...

hi all, i want to utilize an existing 60 hz centrifugal pump in the 50 hz electrical system in the plant. i need to evaluate the discharge pressure of this. pump performance curve available from the vendor is only available at 60 hz - 3560 RPM. I have tried to contact the vendor but somehow...

hi all, i have a confusion about water content in the natural gas. the amount of saturated water in natural gas usually follows Mcketta and wehe chart (fig 20-3) in GPSA book. i have gas analysis data, the sampling pressure was at 344 psig,and 82 F. according to Mcketta and wehe chart, the...

i mean, why there is no glycol carried over to gas stream ?

dear all, thanks for your respond i want to ask basic questions. first what makes glycol can absorp vapor water in gas ? and why the liquid glycol is not entrained to gas output ? (we want to remove water vapor but we use liquid ?)

hi All, i want to know how do we define the best way to dehydrate gas from 20 lb/mmscfd to 4 lbb/mmscfd, by using Glycol Dehydration Unit or Molecular sieve ? as far as i know molecular sieve is more expensive than using glycol, but what is the limitation of using molecular sieve ? dew point or...

Thanks JJPellin for your respond :) actually i want to know why we need to control the capacity of the compressor ? what will happen if we dont reduce the operating speed ? it will give higher power than needed, but..is there any other effect ?

Hi, I just graduate and I am new in a real engineering work. I dont have experience and I need your help :) we want to use existing reciprocating compressor, the calculated reciprocating compressor capacity at suction condition (55 MMscfd) is higher than the natural gas supplied to compressor...