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| Project Development |
Client
A private client wanting to develop a C3/C4 (LPG) extraction plant from natural gas and then supplying the residual gas to a power plant for burning.
The Problem
Propane and Butane has to be extracted from a natural gas pipeline to a power plant. The residual gas has to be injected back to the pipeline with least perturbance to the ongoing system. This extraction and resulting reduction in calorific value should not also impact the burning characteristics of the gas turbines in the power plant.
Our Approach
The project development involved evaluation of alternate technologies in this area, tie-up of markets for extracted C3 and C4, preparing a techno-economic feasibility study and examining the impact of this extraction on the burning characteristics of gas turbines in power plant.
Proposed Solution
The turbo-expander technology was selected for the process. Market was tied up with an international oil marketing agency. Impact of calorific value variation on the gas turbines in terms of Wobbe indices was computed to justify the minimal impact of the project on the power plant operations.
Outcome
The project had to be shelved afterwards in view of the unfavorable economics when the gas prices changed considerably. |
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