ENERGY RECOVERY COKE OVEN PLANT

Introduction

Srikalahasthi Pipes Limited used to import coke from Japan and China to meet the requirement of the mini blast furnace but then due to the steep rise in the coke prices in the international market it was very difficult to maintain the cost of hot metal produced.

Srikalahasthi Pipes Limited used to import coke from Japan and China to meet the requirement of the mini blast furnace but then due to the steep rise in the coke prices in the international market it was very difficult to maintain the cost of hot metal produced. Thus it was decided to install a coke manufacturing facility to meet the in-house coke requirements. The company was attracted by the low cost of the non-recovery type of coke ovens with its easy compliance with the pollution control norms without any major investments. Now the company operates a coke oven plant with a set of 102 ovens based on the Dasgupta Technology. The plant was commissioned in May 2005 and is producing to the rated capacity of 2,43,000 Tons/year.

Configuration and capacity of Coke Oven Plant

This plant at Srikalahasthi, AP consists of three batteries with 34 ovens each with a Stamped Coal Charge capacity of 17 tones and coking cycle of 58 Hours. The plant’s rated capacity is 2,43,000 tons/year.

Typical qualities of coke produced at SPL’s coke oven plant are as mentioned below:

Moisture 3-5 %
VM 0.5-1 %
Ash 11.5-12.5 %
FC 86-88 %
P 0.06 %
S 0.55 %
M40 85-88 %
M10 6-7 %
CRI 21-25 %
CSR 62-68 %
Different fractions of coke available

SPL’s coke oven plant is equipped with a comprehensive coke cutting and screening plant which can give different sizes of coke as per requirement of the customers. The sizes can be made available are as mentioned below:

Foundry coke +90 mm
BF Coke +20-60 mm
Nut coke +10-20 mm
Pearl coke +8-15 mm
Coke breeze +0-8 mm

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