Discharging device of vertical type solid fuel lime kiln

Abstract

The invention provides a discharging device of a vertical type solid fuel lime kiln. The discharging device can effectively control the falling speed and falling amount of a material, enables the material to be discharged more stably and uniformly and even can achieve multi-point simultaneous discharging. The discharging device is characterized in that a discharging machine is arranged at the position of a discharging channel communicated with the lower end of a cylinder body of the vertical type solid fuel lime kiln.

Description

technical field [0001] The technology relates to a discharge device, specifically, a discharge device of a solid fuel vertical lime kiln for producing lime with granular solid fuels such as coal, coke, and semi-coke. Background technique [0002] The unloading device is mainly used in vertical kilns (furnaces), and is generally installed at the bottom. Its function is to control the discharge of materials from the inside of the vertical kiln (furnace). [0003] For example, the existing solid-fuel vertical lime kiln that produces lime with granular solid fuels such as coal, coke, and semi-coke generally includes a cylinder, a distributing device is arranged at the upper end of the cylinder, and a discharge device is arranged at the lower end of the cylinder. , There is an air supply device above the unloading device. [0004] The material distribution device generally adopts an elbow distributor, a material bell distributor or a rotary distributor. The solid fuel and ore ra...

AI Technical Summary

Problems solved by technology

These factors have resulted in large differences in the temperature and falling speed of materials on the same section of the lime kiln, that is, the temperature and time of calcination of materials in the kiln are not uniform, so the quality of lime produced is uneven.

In addition, because the upper end of the cylinder is open, the flue gas is directly discharged through the upper end of the cylinder, which makes it difficult to collect and treat the flue gas, polluting the environment

[0005] In addition, due to the limitations of feeding, unloading and blasting methods, the production capacity of existing solid fuels, especially lime shaft kilns for burning raw coal and coke, is relatively small

[0006] In my country, coal-fired lime shaft kilns with a wide range of areas and large quantities have been banned in many places due to backward equipment, low product quality, and serious environmental pollution. Cass double-beam kiln, Simon double-D kiln, and rotary kiln not only require large investment and high production costs, but most of them require gaseous fuel or pulverized coal, which does not meet the national conditions of our country, which mainly burns raw coal.

[0007] The unloading device that controls the discharge of the bottom discharge hole of the solid fuel vertical lime kiln is in a high-temperature environment. The structure of the unloading device of the foreign technology lime kiln is very complicated, the cost is high, and maintenance is difficult; the domestic technology lime kiln Unloading device, it is difficult to unload evenly, and the level of automatic control is relatively low

Images