An energy-saving and environment-friendly lime shaft kiln

Abstract

The invention is an energy-saving and environment-friendly lime shaft kiln, which has a kiln body, a material feeding device is arranged on the outside of the kiln body, a material distributing device is arranged on the top of the kiln body, a heat-resistant concrete support platform is poured on the lower part of the kiln body, and the bottom of the kiln body There is a discharge device located in the middle of the heat-resistant concrete support platform. The discharge device includes a screw cone ash unloading tower. The top of the screw cone ash unloading tower is equipped with a wind cap. The external structure of the ash unloading tower is a spiral ladder structure. There is a circle of secondary pallets connected to the spiral ladder at the bottom of the spiral ladder structure. The secondary pallets include a small pallet on the upper floor and a large pallet on the lower floor. There is a coaming board on the periphery, and a baffle is installed obliquely between the lower large pallet and the upper small pallet; the lower part of the large pallet is connected with an ash tank, and the lower part of the ash tank outlet is provided with a material receiving pipe , The lower end of the material receiving pipe is equipped with a two-stage bin-type unloading device; the invention is environmentally friendly and energy-saving, has low raw firing rate, stable working conditions in the kiln, and high output.

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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