Re the shut-down of refinery utilizing chemical cleaning instead of steam purge to avoid H.C emission, if you guys have good experiences and materials please let me know.
We still wonder whether this practice really good in view of cleaning performance. Your comment will be very helpful.
To minimize the amount of contaminated water from amine system during T/A period after system cleaning, If you guys have good recommendation on a method of the cleaning the system, please comment us.
Re the vacuum tower having O/H condenser designed and installed by fixed type cooling water cooler to prevent leakage from atmosphere to system, several questions are raised as below.
1)Fixed type O/H condenser is very difficult to clean
outside tube during T/A period. So, we are considering...
Recently we experienced plugging of strainers(60 mesh) at the inlet of ejectors installed at the vacuum tower overhead in our refinery, to solve this problem questions were made as below. Actually, we want to remove strainer and avoid any operational interuption by the plugging of strainer...
Re the strainers(60 mesh) at the inlet of ejectors for vacuum tower, please comment on following questions.
a) Reason of strainer installation at the inlet of ejector
b) Side effect in case of removing strainer
c) General Mesh size(if installation of strainer is general
practice).
We...
Recently, we experienced sulfur tank roof corrosion and considering installation of steam coil on the outside surface of roof because we think cause of corrosion is condensing of H2S and H2O.
Anybody who has comments about our countermeasure, please inform us.
. LBO color level we actually want is above Saybolt 30. By the way, would you please explain a little more detail re the laptop active clay test or filtration through kieselguhr. For example clay material, LHSV etc.. Thanks for the comment from 25362 and hope another comment.
We have hydrocracker unit followed by lube base oil production unit. This lube base oil unit has been operated with selective iso-dewaxing catalyst and hydro-fininshing catalyst. At the end of run, however, product lube base oil(Group III) color became a little darker. Re this matter, any body...
Recently we experience two operational difficulties for the heater operation.
One is the malfunction fuel oil return ovalmeter which increased fuel oil supply pressure suddenly. Promptly O2 showed almost o% by the increased of oil pressure and increased fuel oil flow.
The other was sudden stop...
Thanks for you guys attention.
Liquid naphtha has been feeding and we use sud-chemie cat. in our reformer. And, HTS DP has constant increasing trend at the constant feed rate.
We have been operating HMP(H2 manufacturing process) for the production of H2 to the refinery. HMP unit consists of purification section(Hydrodesulfurizer/Sufurizer- H2S Absorber), Reformer Tubes and HTS/LTS Reactors. After 10 days later of S/U, HTS reactor dP has been increasing trend. DP...
As you guys know well, recent high oil price make us focus on more energy saving than ever. If there is good internet site, your information will help me a lot. And, If there are any good best practice especially in refinery on saving energy, would you guys please let me know.
Re the management of valves for the whole refinery, we recently are in deep consideration for " how we sure the activity of the valves when they worked, for the valves not operated during normal operation".
For example, there are some valves
a. that is expected to be used only during S/D or S/U...
