Ppt 2

INDIAN OIL CORPORATION LIMITED

BARAUNI REFINERY

PRESENTED BY:VIVEK KUMAR

INSTITUTE ID: 2007UCH136B.TECH VII SEMESTER (2010-2011),

CHEMICAL ENGINEERINGMALAVIYA NATIONAL INSTITUTE OF

TECHNOLOGY, JAIPUR

INDIAN OIL CORPORATION LIMITED

• Indian Oil Corporation Limited is India’s largest commercial enterprise and it accounts for nearly half of India's petroleum consumption today.

• It has the distinction of being the 18th largest petroleum company in the world.

• Indian Oil owns and operates 10 of India’s 20 refineries with a combined refining capacity of 60.2 MMTPA i.e 1.2 million barrels per day.

BARAUNI REFINERY OVERVIEW Barauni refinery was commisioned in the year

1861 which is owned by “IOCL”. Barauni refinery is the second public sector

refinery of IOCL. This refinery is located near the northern bank

of the river Ganga at Begusarai District town of Bihar State.

It operates at 6.00 MMTPA which takes its crude oil from foreign countries through Barauni-Haldia pipeline(BHCPL).

MAJOR UNITS IN BARAUNI REFINERY

AVU : Atmospheric Vacuum Unit NSU : Naphtha Splitter Unit HTU : Naphtha Hydrotreater Unit CRU : Catalytic Reforming Unit RFCCU: Resid Fluid Catalytic Cracking Unit DHDT : Diesel Hyerotreater Unit HGU : Hydrogen Generation Unit SWSU : Sour Water stripper unit ARU : Amine Regeneration Unit SRU : Sulphur Recovery Unit

REFINERY PRODUCTS LIQUIFIED PETROLEUM GAS MOTOR SPIRIT NAPHTHA HIGH SPEED DIESEL SUPERIOR KEROSENE OIL LIGHT DIESEL OIL MINERAL TURPENTINE OIL LOW SULPHUR HEAVY STOCK RAW PETROLEUM COKE CALCINED PETROLEUM COKE PHENOL EXTRACT SLACK WAX

BASIC PROCESS

ATMOSPHERIC AND VACUUM DISTILLATION

UNITS

Separation Separation Heavy at the bottom, light on the Heavy at the bottom, light on the toptop Separation of crude oil by atmospheric and vacuum distillation

into groups of hydrocarbon compounds of different boiling point ranges (called “fractions” or “cuts”)

OPERATION SEQUENCE OF AVU

FEED PREHEAT DESALTING FEED VAPORIZATION

FEED DISTILLATION

PRODUCT COOLING AND STORAGE

PROCESS FLOW DIAGRAM

DESALTERPRE HEAT TRAIN -I

PRE HEAT TRAIN -II

PRE HEAT TRAIN -III

K-101

K-102

K-301

K-2 01

F-102

F-301

F-101

UNSTABILISED GASOLINE

LPG

STABILISED GASOLINE

PRE TOPPED CRUDE

HEAVY NAPHTHA

GASOLINE

KEROSENE

HGO

RCO

LGO

SLOP OIL

LVGO

HVGO

SR

K-101 – PRE TOPPING SOLUMN

K-102 – MAIN FRACTIONATOR

K-201 – STABILISER

K-301 – VACUUM COLUMN

F-101 – REBOILER FURNACE

F-102 – CRUDE HEATER

F-301 – VACUUM HEATER

375 MT/hr

T=130o C P= 10.0 kg/cm2g

DESCRIPTION OF THE PROCESS

DESALTER PRE-TOPPING COLUMN MAIN FRACTIONATOR FEED HEATER MAIN FRACTIONATOR STABILISER SECTION

DESALTER For separation and removal of water and salt

from crudeWhy to desalt the crude feed? Crude oil contains salts-mainly NaCL, CaCL2,

MgCL2, sediments and water At high temp. salts get hydrolyzed in presence of

water. HCL produced is very corrosive and generally corrodes column, condensers

Sediments and water causes plugging of heat exchanger tubes and thus causes restriction in crude flow.

PRE-TOPPING COLUMN This column is provided so that the load on the

main fractionator column is reduced. The purpose of this column is to separate the

gases from the crude. Overhead gases, LPG, and unstabilized Naphtha

are the main products obtained from this column

Ammonia is injected in the form of aqueous solution for preventing HCl corrosion in pretopping column.

MAIN FRACTIONATOR

The bottom product of pre-topping column are heated in train of heat exchangers and fired heater and enters in main fractionator column at 3600C

It’s a distillation process. The top product is naphtha and gas side draws

are Heavy naphtha, Kerosene , LGO,HGO and bottom product is RCO

VACUUM COLUMN Above 3600C the, heavy hydrocarbons starts cracking,

to avoid cracking and separate the middle distillate and feed for RFCCU the RCO is heated to 3870C and is futher distilled in vacuum distillation column.

In vacuum distillation column , the top cut is light vacuum gas oil next comes the Heavy Vacuum gas oil and bottom product is vacuum resid

STABILIZER SECTION

Gasoline containing LPG is called unstabilized gasoline, so it is sent to the stabilizer section for the removal of LPG.

Top product is LPG, and bottom product is STABILIZED GASOLINE

PRODUCTS AND THEIR USES

Sl Products Application1 LPG Domestic Fuel2 Naphtha Feed stock for fertilizer plant,power plant etc.3 Heavy naphtha Blending component for DHDT4 Kerosene Domestic Fuel5 LGO and HGO Fuel for diesel engines,railways,vehicles7 LVGO Blending component for DHDT8 HVGO FCCU feedstock for valuble component recovery9 Short Residue Coker feed

Brief description of DHDT As the crude oil consists of sulphur(1-2%), so the products like diesel also

contain a considerable amount of sulphur in them. And as we know that sulphur on combustion produces its oxides which are harmful pollutants and so it is highly desirable to remove the sulphur out of Diesel.

DHDS (Diesel hydro desulphurisation unit) is set up for the following purposes:

Objective : To meet the Euro –III/IV diesel quality requirement ( 350/50 ppm ‘S’ and Min. 51 Cetane No.)

Feed : Straight run diesel / FCC diesel component/ Coker and Visbreaker diesel components.

Catalyst : Ni-Mo oxides

Catalytic Reforming Unit (CRU)

Catalytic Reforming is a major conversion process that transforms low octane Naphtha feed stock to high octane reformate (ON : 98) for use as a gasoline blending component to make lead free petrol.

A rich hydrogen gas (about 90% purity) and LPG are obtained as valuable by- products. The reformer can also be run for production of reformate rich in benzene, toluene, and xylenes (BTX).

1. Capacity:- 0.33 MMTPA2. Feed :- A combination of straight run naphtha and small quantities of

Hydrocracker heavy naphtha and Vis breaker Naphtha.3. Product:-There are essentially four primary products from the Catalyticss

Reformer:• High octane reformate stream,• Rich hydrogen gas stream,• Light reformate (BTX)• LPG stream (with or without C5)

RESID Fluid Catalytic Cracking Unit (RFCCU) Objective : To convert Heavy Vacuum Gas Oil to valuable

distillates like LPG, Gasoline, Diesel by catalytic cracking in fluidized bed.

Feed : VGO/RCO/VR/Hydro Cracker Bottom. Catalyst : Silica & Alumina Zeolite Structure Products : 1. Off Gas2. LPG3. Gasoline

Sulphur Recovery Unit Objective : To Reduce the SO2 emission from the Refinery by

recovering Sulphur from Amine Acid and Sour Gases produced during various Hydrotreating Process.

Feed : Amine Acid gases and Sour acid gases Products : 1. Off Gas2. Sulphur

Typical Operating Conditions:

Temperature Range : 195-320 Deg C

Pressure : 0.56 kg/cm2(g)

THANK YOU