A process of conditioning a first stage syngas stream containing unwanted species in a first stage concentration formed by a first stage gasification unit of an integrated gasification process for low reactivity fuels, the fuels having an ash content in the coal as high as approximately 45% by weight and an ash deformation temperature in a range from approximately 1050 °C to higher than approximately 1500 °C, the process comprising: converting the first stage syngas stream containing the unwanted species in the first stage concentration into a second stage syngas stream containing the unwanted species in a second stage concentration in a high temperature second stage turbulent fluidized bed gasifier having operating characteristics, tempering the second stage syngas stream temperature containing the unwanted species in the second stage concentration in a syngas temperament device; and returning at least a portion of bed material from the second stage turbulent fluidized bed gasifier flowing through the STD to the second stage turbulent fluidized bed gasifier; wherein the second stage turbulent fluidized bed gasifier is operated in the range of approximately 1100 °C to 1400°C according to a first operating characteristic, the second stage turbulent fluidized bed gasifier including bed material in a bed material region, a freeboard region above the bed material region, and an outlet for the second stage syngas stream containing the unwanted species in the second stage concentration, the second stage concentration of the unwanted species lower than the first stage concentration of the unwanted species; wherein the bed material comprises solid inert particles having a size range of approximately 100 to 200 microns, and wherein the process achieves over approximately 95% carbon conversion into syngas gasifying the low reactivity fuels. converting the first stage syngas stream containing the unwanted species in the first stage concentration into a second stage syngas stream containing the unwanted species in a second stage concentration in a high temperature second stage turbulent fluidized bed gasifier having operating characteristics, tempering the second stage syngas stream temperature containing the unwanted species in the second stage concentration in a syngas temperament device; and returning at least a portion of bed material from the second stage turbulent fluidized bed gasifier flowing through the STD to the second stage turbulent fluidized bed gasifier; wherein the second stage turbulent fluidized bed gasifier is operated in the range of approximately 1100 °C to 1400°C according to a first operating characteristic, the second stage turbulent fluidized bed gasifier including bed material in a bed material region, a freeboard region above the bed material region, and an outlet for the second stage syngas stream containing the unwanted species in the second stage concentration, the second stage concentration of the unwanted species lower than the first stage concentration of the unwanted species; wherein the bed material comprises solid inert particles having a size range of approximately 100 to 200 microns, and wherein the process achieves over approximately 95% carbon conversion into syngas gasifying the low reactivity fuels.