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  • Users: Petro0707
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  1. Petro0707

    Suitable Valve type

    Hi everybody… We are looking for suitable type of valve in outlet of thermal reaction furnace (in Clause reactor in sulfur recovery unit ) which should be made for high temperature ( above 1200 °C) .The valve to be placed in a line diverting hot gases for heating the process gas coming out of...
  2. Petro0707

    Ni alloys aquous corrosion

    Hi everybody, This article is very good where they talk about how various Ni alloy’s corrosion rate is sensitive with the various corrosive species like Oxygen,Organic acid,HCl etc.where I noticed that there is stip rise in corrosion rate of Monel when oxygen / air presence. Thanks & Regards...
  3. Petro0707

    Temperature Inversion

    Hi All... Recently we are facing problem of Tempearature inversion between naphtha draw off & crude fractionator column top temperature. In normal condition – Naphtha draw off temperature remains around 130 °C & Crude column top temperature remains around 111 °C ( Delta between this two temp...
  4. Petro0707

    Additives during transporation

    Dear All, Do you have any idea that Is Carbon disulfide being added in Crude oil during exploration acitivity or transportation acitivity ? Thanks & Regards.......
  5. Petro0707

    Help required

    Dear All experts, We have faced one serious problem in our FCC spent catalyst standpipe bellow leakage problem which has caused Plant S/D and major financial loss too.Actually, this bellow is metallic Inconnel 625 with 1.5 mm thickness double ply.As you all of know that purge steam flow...
  6. Petro0707

    Carbon Disulfide CS2 in PCN (Naptha)

    Usually, we have one Product called PCN-PCNaptha which is nothing but a majority portion of Naptha splitter of Naptha Hydrotreater (Heavy Naptha Unionfining Unit) overhead product goest to storage tank for dispatch. We are currently facing sever problem of CS2 that is Carbon disulfide getting...
  7. Petro0707

    Converting Flash vessel to pretopping column

    Hello..all dear experts.!! Very warm good morning to all of you..!! In Crude distillation unit,crude oil after desalter and series of HE it enters in to the Flash vessel where crude oil is flashed and flashed vapors are taken out and it is routed to the flash zone of the curde distillation...
  8. Petro0707

    HNUU Reactor Detla P

    Hi...All ..!! Warm good morning to you.. Currently we are facing sever problem on following : 1.Heavy Naptha Unionfining reactor (HNUU) Pressure drop is increasing since last couple of months from 1.8 to 3.6 kg/cm2g (existing),still increasing trend. We process naptha from Crude units/VGOHT...
  9. Petro0707

    Incompatibility of Crude oil during blending

    Hi...Everybody....Warm good morning to all of you..!! Currently we process diffrent type of crude oils by blending and depending on the Refinery Economics benefits,we blend diffrent type of crude oils like Maya,Arab light ,Arab heavy etc.I have heard that certain crude oil should not blended in...
  10. Petro0707

    Project of SS in Petroleum refineries

    Hello...Guys...!!! I hope all of you are fine...Warm good morning to all of you..!! Can any body share any completed six sigma project case studies in the Oil refineries. Thanks to all of you..!!!
  11. Petro0707

    Removal of Demister pad

    Very warm Good Morning to all of you..!! 1.Can anybody throw some light on "Removal of Demister pad which is located at inside top most of Vaccum crude tower which is above LVGO Bed will make any sense ? 2.Instead of Pressure distribution to top of LVGO/Slop wax bed --Gravity distribution...
  12. Petro0707

    Crack

    Dear All, Hi.. In Coker Plant,total 8 no. of coke drums are there.Problem is like that in one of the coke drum ,crackes were observed due to severe cracking near skirt weld joint which is also observed after removing additional circumferential insulation for inspection ,other drums are also...
  13. Petro0707

    Heavy crude processing

    Dear All experts, Currently we are operating our CDU/VDU units with 27 API crude mix.We are carrying out desktop study for processing of 24 API Crudemix with simulation that what will be impact ? I have following issues to be discussed : 1.As,VR yield will increase but how to minimize VGO...
  14. Petro0707

    Fouling of the bed

    Dear All Experts, As you know, Low vaccum gas oil(LVGO) which is the product of vaccum distillation column which operates at 20 & 32 mmhga top and flash zone pressure with 28 API Crude mix processing.LVGO packed Bed is fouled,its Delta P incrased from normal 2 to 3 mmHga to 15 mmHga .What can...
  15. Petro0707

    Design of Crude Unit Desalters

    Hello, Guys... Well, I am trying to prepare process design of desalters for 25 API Crude Mix.Apart of stokes law ,is there any refrence books/material/magazines/E-material which can help me to prepare design as well as which can help me to check the performance of existing desalters in terms of...
  16. Petro0707

    Best Design Practices

    Hello...Guys.... I am preparing only 3 Pages word document on "Shell & Tube Heat Exchanger Best Design Practices for process engineers" Of course there are lot of books like Kern,other E-materials available on this but I want to reconcile on major 8 subtopics. So, can you pl. share on the...
  17. Petro0707

    VDU Tower

    Vaccum Distillation Tower which is operated at 20 mmhga top & 32 mmHga (flash zone ) pressure.Now in this case VGO droping in VR is relatively higher side ~ 2.8 - 3 wt% of crude.Steady state simulation studies shows that If VDU Column is operated under dry tower condition i.e. 6 mmHga top & 18...
  18. Petro0707

    Trapped Water Risk

    I understand that Unwanted / Accumulated water or hot condensate in the pipelines in the refinery plants especially in Crude & Vaccum units is one of the hazard which can create water hammer while it gets contact with hot hydrocarbons. e.g. During start up activites accmulated water in Crude...

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