What is the impact of the circulation ratio on the combustion in circulating fluidized bed boilers?

The combustion efficiency of circulating fluidized bed boilers increases as the circulation ratio of solid materials rises, and this effect is particularly evident when the circulation ratio is between 0 and 5. However, as the circulation rate increases, the electrical power consumption of the fan also rises, exacerbating wear on the equipment. Increasing the cycle rate can raise the particle concentration in the dilute phase region and in the flue gas, increase the combustion share in the upper part of the furnace, and accordingly raise the steam temperature. However, the benefit of increasing the cycle ratio on combustion efficiency is limited; when the cycle ratio reaches a certain value, the combustion efficiency of the boiler actually decreases. Therefore, an optimal cycle ratio should be selected.

The combustion efficiency of circulating fluidized bed boilers increases as the circulation ratio of solid materials rises, and this effect is particularly evident when the circulation ratio is between 0 and 5. However, as the circulation rate increases, the electrical power consumption of the fan also rises, exacerbating wear on the equipment. Increasing the cycle rate can raise the particle concentration in the dilute phase region and in the flue gas, increase the combustion share in the upper part of the furnace, and accordingly raise the steam temperature. However, the benefit of increasing the cycle ratio on combustion efficiency is limited; when the cycle ratio reaches a certain value, the combustion efficiency of the boiler actually decreases. Therefore, an optimal cycle ratio should be selected.

The circulation ratio of a circulating fluidized bed boiler = amount of circulating material / amount of coal fed. The combustion efficiency of circulating fluidized bed boilers increases as the circulation ratio of solid materials rises, and this effect is particularly evident when the circulation ratio is between 0 and 5. However, as the circulation rate increases, the electrical power consumption of the fan also rises, exacerbating wear on the equipment. Increasing the cycle rate can raise the particle concentration in the dilute phase region and in the flue gas, increase the combustion share in the upper part of the furnace, and accordingly raise the steam temperature. However, the benefit of increasing the cycle ratio on combustion efficiency is limited; when the cycle ratio reaches a certain value, the combustion efficiency of the boiler actually decreases. Therefore, an optimal cycle ratio should be selected.

The combustion efficiency of circulating fluidized bed boilers increases as the circulation ratio of solid materials rises, and this effect is particularly evident when the circulation ratio is between 0 and 5. However, as the circulation rate increases, the electrical power consumption of the fan also rises, exacerbating wear on the equipment. Increasing the cycle rate can raise the particle concentration in the dilute phase region and in the flue gas, increase the combustion share in the upper part of the furnace, and accordingly raise the steam temperature. However, the benefit of increasing the cycle ratio on combustion efficiency is limited; once the cycle ratio reaches a certain value, the boiler’s combustion efficiency actually declines. Therefore, an optimal cycle ratio should be selected

I think it’s still best to control the furnace temperature and use low-nitrogen combustion