How to save energy and protect environment in environmental protection lime kiln

With the development of society and the progress of science, environmental protection has become one of the major issues facing China. How can we save energy and reduce emissions in the lime kiln? The environmental protection lime kiln manufacturer will explain it to you, right?

Environmental protection lime kiln includes furnace body, furnace and ash outlet. Brick layer is set around the furnace, and aluminum silicate fiber felt layer and brick layer are set outside the brick layer. The outer layer of bread is covered with iron flakes; The furnace top is equipped with a flue, which is connected with the dust remover through a fan and a pipe, and a lime pond is set below the dust discharge pipe orifice of the dust remover. The patented technical structure of the utility model has reasonable design, good thermal insulation effect, small heat loss, dust removal passes through the upper pipe of the dust collector, the lime pond below the dust exhaust pipe orifice absorbs and desulfurizes particulate dust, and the top pipe of the dust collector discharges smoke to the high air without dust, which has little air pollution. It is an ideal environmental protection lime kiln.

The main value of the lime kiln increases rapidly, the single consumption of the lime kiln decreases, and the thermal efficiency is getting higher and higher. However, the special structure of the lime kiln and the characteristics of the combustion process of the lime kiln determine that the thermal operation process of the lime kiln is complex, and it is relatively difficult to control in the operation process. The product quality fluctuates greatly, and the energy consumption is high. At the same time, the fuel cost accounts for more than 70% of the total lime production cost. Whether the lime kiln can save energy is the focus of many small and medium-sized enterprises.

In order to control the cost and achieve the goal of high yield, superior quality and low consumption, the existing thermal operation system of lime kiln needs to be analyzed and studied.

The O2 content in flue gas of lime kiln is 14. 96% (the content refers to the volume fraction), and the CO2 gas content is 19. 91%, compared with the ideal flue gas composition: O22% - 4% and CO2 about 30%, the gap is large. If the oxygen content of flue gas is 4% as the ideal value, the oxygen content of existing flue gas is 14%. At 96%, the excess air rate is 1. 8145. Excess air volume reaches 1. 8145 times. If the carbon dioxide content in the exhaust gas is calculated, the excess air rate is zero. 5067, at this time, the amount of excess air accounts for about 1/2 of the total smoke exhaust.

Therefore, the exhaust air volume of the lime kiln and the exhaust air humidity should be strictly controlled.

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