Pharmaceutical enterprises need a large amount of steam to sterilize and sterilize raw materials and equipment and provide heat in the process of drying and cooling, and granulation. The demand for steam is high, and the proportion of energy consumption is also large. The frequency of use of coal-fired steam boilers is very high. However, with the implementation of energy-saving and emission-reduction policies, it is a problem for many pharmaceutical companies to reduce energy consumption as much as possible in order to meet production requirements. Therefore, the use of gas-fired boilers is increasing.