Q & A

Welcome to the ePTQ's Q&A: the technology Q&A for the refining, gas, biofuels and petrochemical processing industries.
You can browse existing questions and answers by topic or date or carry out a freetext search.
Using it is simple: try it out for yourself now.
And if you want to ask a question on any aspect of hydrocarbon process technology or plant, or answer a question that has been posed, just register and login. It will take you only seconds to do so.

We are excited to be Strategic Partner of the World Refining Association’s ERTC: Ask the Experts. This new event from the organisers of ERTC, the biggest and most important event for the European downstream industry, is the only event in Europe offering process and maintenance engineers a platform to ask their burning questions about the everyday challenges facing their plant and hear the practical solutions from industry experts.

This face to face interactive event, features experts from leading European refineries and technology providers; engineers will have the chance to hear unparalleled knowledge through interactive discussions such as fishbowl panels, Q&A Panels and Poster Sessions. Learn more here: asktheexperts.wraconferences.com  

Browse the Q & A
Search by Text Search By Date

Enter Search Criteria

Search by Date 

Search by Topics  

Recent Questions
Recently Answered Questions
Date  Replies
06/10/2017 Q: How to control IBP, FP and Ep for diesel, kerosene and light naphtha products? (4)
27/12/2017 Q: At the beginning of our NHT project ( catalyst HR 506), sulfiding was done by pre-wetting condition and still now same oil in procedure has been followed that means Oil in start with DSN at 140 degC through reactor and DMDS injection start at 180 degC to maintain the H2S at 180 to 200 ppm. Finally at 280 deg C, DSN is replaced by Heavy Naphtha (HN). Mentionable that our HN is sweet so we have to inject DMDS all the time to maintain H2S limit within 180-200 ppm in the recycle gas to keep the catalyst in active phase. Now my question is that what is the demerit now to do the normal start-up by starting oil-in directly with HN at 280 degC without pre-wetting ? Is there any chance of losing Sulfur from catalyst during H2 rich gas circulation within 6 hrs to raise the temperature to 280? Is there any impact on catalyst to increase the differential Pressure (dp)of catalyst bed for pre-wetting or direct oil-in procedure? Currently dp across the reactor bed observed increasing little bit after each normal start-up by pre-wetting oil-in procedure -what could be the root cause of it? (1)
13/03/2018 Q: We have kerosene hydro bone unit (desulphurization unit) , we faced technical problem which is non-improving (WSIM) water separometer index modified specification .
what is the mean thing that effect in (WSIM), and how can we improve it?
By the way, the reactor system of kerosene hydro bone unit is isolated.
12/03/2018 Q: What does it mean by metallic and acidic side of a catalyst( e.g. Platinum)? (1)
01/03/2018 Q: Are there any differences between a naphtha hydrotreater and a diesel hydrotreater? (5)