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3A/4A Molecular Sieves

Fri, 05 Jun 2026 15:14:27 +0000

"In the natural gas liquefaction (LNG) process, what are the typical engineering design values for the dynamic adsorption capacity of 3A and 4A molecular sieves during the pretreatment dehydration stage, and is it necessary to consider an additional design margin?

Agitator Power

Fri, 05 Jun 2026 12:12:17 +0000

Can we consider power consumed by agitator to consider it for temp rise of slurry or liquid in which agitator is being used . If yest is any body is having reference or calculations or basis for this consideration.

I does not mean that it is " Yeast " , it was typo error sorry for inconvenience ; instead of Yes I wrongly type yeast . My querys is that if our reaction requires some temp ; so can we consider the heat generated during mixing of liquid by agitator -which upcourse requires power while considering heating requirment . Power required by agitator can be considered (as temp will rise in slurry/liquid due to agitation ) while considering heating requirement of that reactor . Suppose tank is having heating coil; so temp rise due to agitation in slurry can be considered while calculating heating requiremen.

Suppose heating requirement is X and heat genereated due to agitation is Y so while designing heating requirement i.e.

Net heating requirment for designing coil = X-Y .

Agitator Calculations

Thu, 04 Jun 2026 07:13:47 +0000

Can any body having agitator performance calculation sheet -to calculate pumping flow rate ,power number ,tip speed,pumping number

Utility Systems

Wed, 03 Jun 2026 04:14:43 +0000

"Process Flow Diagrams (PFDs) or simplified P&IDs for utility systems, specifically thermal oil, chilled water, and hot water systems, for study purposes。

Convertor Performance For Sulphuric Acid Generation

Mon, 01 Jun 2026 07:59:35 +0000

Dear Forum Members :

SO3 is produced by conversion of the So2 to So3 in a convertor. DP for the 1 st and 4th beds has observed to have increased from the normal values to max limits .Is their a tool to predict the balance service period of operation based on DP. flow has been reduced by 20 % of cap.

Carbon Mol. Seive Mechanical Properties

Sun, 31 May 2026 15:23:47 +0000

Dear forum members：

Nitrogen is generated by passing compressed air in a pressure swing adsorption cycle. The adsorbent used is Carbon Mol. seive. Mechanical tests, namely Crush strength and Hardness, are required to check its performance.

Requested members to share the standard test methods document.

Ndt

Wed, 27 May 2026 14:57:34 +0000

Should the NDT and testing sequence for sour gas pipeline welds be executed as 'RT — PWHT — Hardness Testing — UT', or should it follow the order of 'RT — PWHT — UT — Hardness Testing'
why

Hello， Design Of Natural Gas Liquefaction Processes.

Thu, 21 May 2026 09:26:25 +0000

The natural gas decarbonization process utilizes permeation membranes for CO_2 separation. There is a heating step at the inlet of the first-stage (Stage 1) membrane separation. The Stage 1 permeate is compressed and pressurized, and then routed into the second-stage (Stage 2) membrane separation, with its retentate recycled back to the raw gas inlet. Is there a process flow diagram (PFD) available for this? I would like to study

Convert No. Of Trays Into Packing Height

Wed, 20 May 2026 15:37:05 +0000

Hello everyone,

I would like to understand how to convert packing height into an equivalent number of theoretical trays, and vice versa (i.e., number of trays to packing height).

This is for an amine plant I am currently working on, and I am trying to evaluate which option would result in a more optimized design—trays or packing.

I would appreciate any guidance or references on this topic.

Gpsa 14Th

Sun, 10 May 2026 07:03:59 +0000

Hi there, does anyone here have the GPSA Engineering Data book 14 th pdf . Can i have them cause i need the book to complete my plant design for natural gas processing.