How to Improve the Rate of Sludge Incineration?

Dry sludge, the sludge contains a lot of organic components in the organic matter content is in commonly 50-70%, its calorific value is higher.So can provide a lot of energy, make the sludge drying, and spontaneous combustion.But when the sludge is not in conformity with the sanitary requirements, high content of toxic substances, cannot serve as the administration organs of military-run agricultural fertilizer and feed, or high combustion value of sludge itself, can be arbitrary spontaneous combustion and combustion heat power generation, can consider to use sludge incineration.Sludge incineration equipment presently used with rotary incinerator, multiple stage incinerator and fluidized bed incinerator, etc.The rotary incinerator with its high rate application is very broad.

Commonly used in the sludge incineration, countercurrent cement rotary kiln (http://www.hxjq-ballmill.com/pro/cement_rotary_kiln.html). Furnace lining firebrick lining with heavy hardfacing with radial fire board, prompting sludge turning. The feed end of the furnace body slightly higher than the discharge end, shaft has a lean, furnace charge can move along the furnace length direction.In about one-third of rotary kiln furnace long length for dry zone, after a period of about two-thirds of the long length is burning. Rotary kiln is put into operation, the first is by air or fuel oil combustion preheating furnace, and then the dehydrated sludge cake of. Sludge from the furnace top, discharge from the low end, fuel oil injection from the low end, so the low-end always has the highest temperature, low temperature and high temperature end. As the furnace body rotation, sludge from high-end to low-end slowly. First in the dry zone, preheating dry sludge, after reaching the critical moisture content 10% 30%, the temperature of the sludge and wet bulb temperature of hot gas as about 160 ℃, for constant speed evaporation, temperature began to rise, then reach the point of ignition, the combustion...