Product Overview

Description

PETCOKE

------------

Introduction

------------------

Petroleum coke (Pet coke) is a carbonaceous solid derived from oil refinery Delayed Coker Unit.

 

Applications      

-----------------

Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. Any coal using industry can be a potential consumer of Petcoke. Major industrial segments using Fuel grade Petcoke in India are:

 

  • Cement Kilns
  • Thermal Power Plants
  • Brick Kilns
  • Lime Kilns
  • Paper Industry
  • Steel Rolling Mills
  • Foundries
 

 

BIS Specifications

------------------------

BIS specification of petcoke as per IS: 8502-1994 is given below:

 

Particular

Value

http://hmel.in/marketing/images/line.gif

Moisture (% mass, max)

8-12

Total Sulphur, % mass, max

4.5-7.5

Ash, % mass, max

0.2-0.3

Volatile Matter, %mass, max

8-11

Fixed Carbon, % mass, min

87.93-91.01

Gross Calorific Value, (GCV) Kcal/kg

7,800-8000

http://hmel.in/marketing/images/line.gif

 

Major Characterstics

-----------------------------

Petroleum coke is the solid residue remaining after the distillation of petroleum materials. It is a carbonaceous solid derived from oil refinery Delayed Coker Unit.

 

High Carbon Content: It’s high carbon content makes it an excellent heat energy source.

 

High calorific value: Petcoke has high calorific value, ranging from 7000 to 8500 Kcal/kg, which makes it an economic fuel as compared to the alternate fuel coal.

 

Low volatile matter: Low volatile matter makes it a slow burning fuel so it requires high ignition temperature.

 

High Sulphur Content: It has high Sulphur content, which necessitates the deployment of SOx capture or removal system to reduce SO2 emissions. However, Petcoke is ideal for burning in lime kilns, where the sulphur combines with various salts of calcium to form sulphates, thus limiting the SO2 emission.

 

Low Ash Content: Petcoke has extremely low ash content, which eliminates the need to handle and dispose high quantity of ash associated with combustion of Indian coal having 15-35% ash. Hard Grove Index: Pet coke has low Hard Groove Index, which makes it relatively harder material to grind and pulverise.

 

Comparison of Indian Coal, Imported Coal & Petcoke

----------------------------------------------------------------------------

A comparison of specification of C grade Indian non-coking coal used by cement industry, coal imported from Indonesia and petcoke is shown below

 

Parameter

Average Values

http://hmel.in/marketing/images/line.gif

 

‘C Grade’ Indian Coal

Coal Imported from Indonesia

Petcoke

GCV (Kcal/kg)

4940

6400

8200

Sulphur, (% mass, max)

0.8

1.00

7.5

Ash Content, (% mass, max)

32

4.5

NIL

Volatile Matter, (% mass, max)

27

41

10

Moisture Content (%mass, max)

4

16

10

Metallic Impurities

Absent

Absent

Present (Ni & V)

Non-Metallic Impurity

Present

Absent

Absent

Hard Grove Index (HGI)

-

-

30-40

Size in mm (Max.)

-

-

100

http://hmel.in/marketing/images/line.gif

 

0.0052 s.