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Energy Conservation Improvement of DMT Plant using CHP Analysis
Industry: Petrochemicals
Challenge
In this project, the production process of Dimethyl Terephthalate (DMT) studied and improved by using constant-pressure-drop technique. Using synchronous power and heat generation (CHP) analysis, energy conservation in plant and also total power generation of plant improved drastically.
- 1. Less fuel consumption of furnace (O7006) and therefore less fuel consumption of total plant by Improving the waste incinerator furnace (O7006) and eliminating its entering waste-water.
2. Decreased energy consumption of production process and also decreased coolers load which leads to less cool water and power consumption By improving heat exchangers network of the plant.
3. Decreased energy intensity or in other words, the fuel consumption per unit of production decreased in the company and therefore energy efficiency in the plant raised.
4. The energy intensity of the overall production of plant was reduced which resulted in a lower product cost.
5. By installing a Waste Heat Boiler (WHB), a part of required saturated steam (7 bar) of plant guaranteed.
6. Decreased energy consumption and increased efficiency of waste-incinerator furnace (E7009) by installing a waste water treatment system.
7. Increased energy efficiency of plant by improving and making air-compressor K961 electric motive.
8. Decreased waste heats in plant such as condensation of surplus steam in exchanger E927.
9. Production of 8260KW pure power in plant using CHP analysis and installing a steam turbine.
10. GHG’s emissions reduced due to less fossil fuel consumption.
Proposed Solution
Results
Energy Saving
(%)
OPEX Saving
($/yr)
Investment
($)
Payback Period (month)
43
1,490,547
2,629,613
21
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