The invention discloses a fuel gas distribution type energy sources system and a process and particularly relates to a fuel gas distribution type energy sources system for removing nitrate by taking liquid ammonia as a reducing agent and a process of the fuel gas distribution type energy sources system, belonging to the technical field of fuel gas distribution type energy source supply. The system comprises a fuel gas turbine system, a denitration system and a waste heat utilization system, wherein the fuel gas turbine system is arranged at the top of the system, and the denitration system and the waste eat utilization system are sequentially arranged behind the fuel gas turbine system; the denitration system comprises a liquid ammonia storage tank, a liquid ammonia flow valve, an ammonia evaporator, an ammonia-flue gas mixer, an ammonia spraying grid and an SCR reactor which are sequentially connected, and the ammonia evaporator and the ammonia spraying grid are communicated with the fuel gas turbine system. According to the fuel gas distribution type energy sources system, the fuel gas turbine system, the denitration system and the waste heat utilization system are effectively integrated, and smoke at an outlet of the system is denitrated, so that the discharge amount of nitric oxide in a unit is further reduced; furthermore, electric quantity, heat quantity and cold quantity can be simultaneously provided for a user, so that the gradient utilization of the energy is realized, and the comprehensive utilization efficiency of energy sources is improved.