A major concern of new civilized world is Air pollution that has a serious problem on human health and the environment. Carbon dioxide, a greenhouse gas, is the main pollutant that is warming Earth. Take a variety of measures were agreed by the most people and governments that curb the emissions of carbon dioxide and other greenhouse gases. The Khangiran sour gas refinery is the biggest refinery plant in Northern East of Iran. In this refinery, four drying towers were used for natural gas dehydration. As the gas flows through one tower containing the solid desiccant, water and hydrocarbons are adsorbed onto the surface of the material. After adsorbing for 80 minutes, the material becomes fully saturated with water and hydrocarbons. While two tower are on adsorption time, the other two towers are being regenerated by the application of heat through a small portion (about 10 percent) of entering gas and subsequent cooling. In this process, the furnace temperature is set to 300°C. The regeneration time is 30 minutes less than the need adsorption time for towers therefore large amounts of energy were wasted until the next period. In order to reduce fuel consumption, a Temperature Transmitter (TT) was installed where the heating stream goes out from the towers. This plan is suitable when the bed is regenerated, the furnace output temperature is reduced to the appropriate value. In this research, furnace fuel consumption and carbon dioxide (CO2) generation versus temperature transmitter installation were investigated. Then heat optimization was achieved by the mentioned process simulation by AspenTech softwares. The simulation results shows that by this project reduction in fuel consumption was (about 833.7 MSCM per year). Moreover, The results show that silica gel life increases with this design. Furthermore, it was shown that this scheme is economically viable and caused reduction of 1663.9 metric ton of CO2 emission per year.