Ibn Sina Petrochemical Company was established in 1385 with the investment of the private sector with the aim of producing products such as maleic anhydride, butane DL (BDO), and polybutylene terephthalate (PBT). The first phase of the project for the production of maleic anhydride, normal butane, and isobutane began in 2013 and was put into operation in 1400. We consider environmentally friendly production and sustainable use of natural resources as our duty. Therefore, in this project, many measures have been taken to minimize energy consumption and waste production. The use of butane feed instead of benzene is also in the same direction and uses the latest developments in technology in this field.