07-04-2012, 12:28 PM
co generation of power in acid plant all LP LTD
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INTRODUCTION
It is a matter of fact that of our every day life that when ever commodity of our daily use or need is available freely or at a throw away prices we does not realize the real value of commodity. It is only when such a commodity, which has become an essential ingredient of our every day existence, becomes too costly for us that we start thinking in terms of conserving it by reducing its daily consumption or finding alternatives for it. The story of energy from whatever source if it’s available is not very different.
STATEMENT OF PROBLEM
The TTP is at present facing a great amount of steam waste that has been produced for working of SAP and TiO2 plant which results wasting of great amount of money, man and machine power.
TTP is at present not having a condenser and recycler system and the amount of dematerialized (DM) water produced is delivered to the atmosphere in the form of steam through branches of pipes.
The effluent water from TTP is disposed directly to the sea. This causes pollution.
To utilize the excess steam that has been wasted during operation, a turbine and alternator system is established.
A PROFILE OF TRAVANCORE TITANIUM PRODUCTS LIMITED
Travancore Titanium Products Limited (TTP) Trivandrum is a public sector unit, managed by the Government of Kerala. This company was incorporated way back in 1946 to produce Anatase grade Titanium Dioxide pigment using the mineral sand of Kerala found on the beaches near Quilon. The know-how was provided by the British Titanium Products (BTP), U.K and production started in 1951.
COMPANY PROFILE
The Government took over the administration of Travancore Titanium Products Limited and raised the capacity of the factory from 5 tonnes to 18 tonnes per day. Along with this expansion, the company also commissioned its first Sulphuric Acid plant with a production, capacity of 40 tonnes acid per day.
PLANT DESCRIPTION
Travancore Titanium Products Limited Thiruvananthapuram is a Public sector unit managed by the Government of Kerala. This; company was incorporated way back in 1946 to produce Titanium Dioxide pigment using the black ilmenite sand a major constituent in the mineral sands of Kerala found on the beaches near Quilon. The know-how was provided by the British Titan Products, UK( Production started in 1951. Initially the output was only 5 tones per day of anatase grade Ti02 pigment. This has been subsequently raised in stages to the present level of nearly 40TPD.
SULPHURIC ACID PLANT¬
Sulphur is the raw material used for the manufacture of Sulphuric acid. Sulphur is basically a by product of petroleum industry. A part from petroleum industry sulphur is obtained from volcanic eruptions. Sulphur as byproduct of petroleum industry is mainly extracted in countries like Iran, lraq, USA etc., Chile, Malaysia are the countries which produce sulphur from volcanic eruptions which is of much better quality than that of from petroleum industries.
CO – GENERATION – AN OVERVIEW
In the generation of electricity, a large amount of heat energy remains in the exhaust stem turbine or hot gases from the gas turbine. On the other hand, many industrial processes use high temperature heat: textiles, cement, pulp and paper, food processing fertilizer, petroleum refining, steel and glass industries are examples. The waste heat in both the above cases in energetic and is therefore, potentially capable of producing useful work in the form of process steam or electricity. Industrial managers are being urged to look at systems that co-generate both heat and electric power.
CONCEPT OF CO-GENERATION:
The concept of cogeneration is based on the principle of thermal cascading, which consists of generating power on site where a substantial fraction of waste heat produced is recovered to satisfy the heating/cooling demand of the end-user.
CONCLUSION
The present co generation system employed in TTP proposes to produce 320kw of electricity using back pressure impulse single stage turbine utilizing the excess steam available at acid plant. The unit will generate power according to the capacity utilization at the existing tariff level. At 60% capacity utilization the unit may not generate profit but profit will increase as capacity utilization goes up.