Abstract: A fast-start vaporization system is disclosed herein. In one embodiment, the fast-start vaporization system is part of a pollution control system that includes a vaporization chamber and a heat source. The heat source is configured to maintain the vaporization chamber at an elevated temperature (e.g., at least about 300° F.) when the vaporization chamber is idle. The heat source may be one or more band heaters disposed around a circumference of the vaporization chamber, and it may be disabled when the vaporization chamber is not idle. The pollution control system may further include one or more nozzles configured to disperse a liquid such as aqueous ammonia in a flow of carrier medium (e.g., hot air or flue gases) through the vaporization chamber. From the pollution control system, the mixture of gases may be injected into a flue gas stream in preparation for selective catalytic reduction.