An observation result using heat-integrated design of the process shows that a significant operating cost savings of 50% compared to the conventional process. The reactive DME distillation column design results show that the highest savings in the capital cost of 69 % and operating cost of 84 % can be achieved compared with the conventional base case. Fundamentally, the saving in capital and operating costs will be directly saving the total annual cost and this saving shows the benefit of using the process integration rather than conventional process. Beside the cost saving, the flue gas emissions have been reduced significantly. The total emissions have been reduced by 51% and 86% using the heat-integrated design and the reactive distillation column design respectively.
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