Energy-saving environment-friendly lime shaft kiln

Abstract

The invention relates to an energy-saving environment-friendly lime shaft kiln with a kiln body. A feeding device is arranged on the outer side of the kiln body, a distributing device is positioned at the top of the kiln body, and a heat-resistant concrete supporting table is poured on the lower portion of the kiln body. A discharging device is arranged at the bottom of the kiln body and located at the middle of the heat-resistant concrete supporting table. The discharging device comprises a spiral cone ash-discharging tower, and a cap is installed at the top of the spiral cone ash-discharging tower, a kiln air inlet channel is arranged at the center of the spiral cone ash-discharging tower, and an external structure of the spiral cone ash-discharging tower is a spiral step structure. A round of secondary supporting plate is arranged on a bottommost layer spiral step of the spiral step structure in a butt joint mode and comprises an upper layer small supporting plate and a lower layer large supporting plate. A surrounding plate is arranged on the periphery of the large supporting plate, a baffle is slantly arranged between the lower layer large supporting plate and the upper layer small supporting plate, an ash receiving tank is arranged on the lower portion of the large supporting plate in a butt joint mode, a material receiving pipe is arranged on the lower portion of a discharging port of the ash receiving tank, and two bin type discharging devices are positioned at the lower end of the material receiving pipe. The energy-saving environment-friendly lime shaft kiln is environmentally friendly, saves energy and is low in underfiring rate, the working conditions in the kiln are stable, and the yield is high.

Description

technical field [0001] The invention relates to the technical field of industrial kilns, in particular to an energy-saving and environment-friendly lime shaft kiln. Background technique [0002] In the industrial kiln industry, whether the lime shaft kiln technology is advanced or not is mainly reflected in the following three aspects: material distribution system, heat preservation system and unloading system. The following questions: [0003] 1. Material distribution system: At present, there are two main ways of lime shaft kiln material distribution, a. The material pipe rotates a little ring cloth; b. The material pipe rotates and the materials are distributed together with the material blocking reflector. These two methods have the following defects: [0004] The first kind of fabric: the lime shaft kiln section fabric is completely uneven; [0005] The second kind of cloth: the cross-section of the lime shaft kiln is not evenly distributed, and there are dead angles....

AI Technical Summary

Problems solved by technology

[0005] The second kind of cloth: the cross-section of the lime shaft kiln is not evenly distributed, and there are dead angles. They all reduce the effective volume of the lime shaft kiln and affect the output. It is not energy-saving, and the limestone enters the calcination zone before it reaches 700?, ​​which increases the raw burning rate

[0007] 1. The rate of over-burning and under-burning is high, and it is easy to cause coking

[0008] 2. A large amount of dust is generated at the unloading place, polluting the environment and affecting the health of operators

[0009] 3. Break the burnt blocky lime into small pieces or powder, which will affect economic benefits

[0011] 5. Unloading must stop the wind, change the temperature of the three zones in the kiln, the kiln is very easy to coke

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