What energy can be used for heating the reactor of recycling pyrolysis plant?

Many energy can be used for heating the reactor of recycling pyrolysis plant, like coal, wood, crude oil, diesel, and natural gas. Also the carbon black from our pyrolysis plant  is also a good material for heating the reactor, but it needs pellet. If use coal for heating, one batch needs about 500-600kg; if use wood, needs about 600-700kg; if carbon, needs about 500-600kg; if use crude oil, needs about 600-700kg; if use diesel, needs about 500kg. Our pyrolysis plant contain the furnace door itself under the reactor, so if you use wood, coal, carbon for heating, you do not need to prepare other devices. But if you prefer to use natural gas and oil for heating, you need to prepare the oil burner or gas burner, we will not offer this, but we can buy for you.So first you need to find out which energy is more convenient for you to use in your country.