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6) What do you understand by Direct Sorbent Injection Technology (DSI). Discuss its advantages and feasibility for Indian industry.(250 words) 

Topic: Science and Technology- developments and their applications and effects in everyday life

Achievements of Indians in science & technology; indigenization of technology and developing new technology.

6) What do you understand by Direct Sorbent Injection Technology (DSI). Discuss its advantages and feasibility for Indian industry.(250 words) 

Reference

Reference

Why this question

Given the anticipated increase in coal consumption in India, the issue of reducing particulate matter pollution becomes more pertinent. Recently National Thermal Power Corporation (NTPC)’s Dadri Power Plant is opting for a Dry Sorbent Injection (DSI) system for controlling sulphur dioxide (SO2) emissions and ensuring compliance with the 2015 environmental norms within the stipulated deadline. The technology has many advantages over flue gas desulphurisation (FGD). The issue is related to GS3c syllabus under the following heading-

Science and Technology- developments and their applications and effects in everyday life

Achievements of Indians in science & technology; indigenization of technology and developing new technology.

Key demand of the question.

The question simply wants us to describe the meaning and key aspects of DSI. It then wants us to  discuss the advantages as well as feasibility of the DSI in the Indian mileu.

Directive word

Discuss- we have to write in detail about the DSI technology, what are its advantages vis a vis other technologies, whether there are any issues involved etc. We have to be as exhaustive as possible while staying within the word limit.

Structure of the answer

Introduction– Give a brief definition of the DSI and the recent introduction of the technology by NTPC.

Body-

  • Bring out the imperative of controlling SO2 emissions in the wake of increasing coal consumption for electricity generation.
  • Discuss the DSI technology further. Describe its working/ principles.
  • Discuss in points the advantages of the technology. E.g lower capital cost, wide range of favourable operation conditions, and much lesser time for completing installation and commissioning, reduces emissions of other acidic gases and heavy metals like mercury.

Conclusion- mention the issues associated with the technology (e.g high operational costs etc) and form a balanced opinion on the overall feasibility of the technology vis a vis India.

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