CN110937828A

CN110937828A - Lime shaft kiln

Info

Publication number: CN110937828A
Application number: CN201911288034.4A
Authority: CN
Inventors: 何祥华; 张舜洋; 张建军
Original assignee: Huaihua Xin Feng Peak Calcium Industry Co Ltd
Current assignee: Huaihua Xin Feng Peak Calcium Industry Co Ltd
Priority date: 2019-12-15
Filing date: 2019-12-15
Publication date: 2020-03-31

Abstract

The invention provides a lime shaft kiln, which comprises a drying zone, a preheating zone, a calcining zone, a deep decarburization zone, a cooling zone and a kiln body, wherein the drying zone, the preheating zone, the calcining zone, the deep decarburization zone and the cooling zone are sequentially arranged in the kiln body from top to bottom, a plurality of stacked iron bricks are arranged in the cooling zone, and the iron bricks are used for heat dissipation. Compared with the prior art, the lime shaft kiln provided by the invention has the following advantages: the cooling zone adopts iron bricks to replace the traditional refractory bricks, the heat dissipation blocks are adopted, and the lime cooling speed is high; an air blower with an oxygen generation function is adopted, so that the oxygen content of air introduced into a cooling zone is increased, and the decarburization and calcination efficiency is improved; the extracted kiln gas heats the air introduced into the kiln, so that the effect of waste heat utilization is achieved, and the environment is protected and the energy is saved.

Description

Lime shaft kiln

[ technical field ] A method for producing a semiconductor device

The invention relates to a lime shaft kiln.

[ background of the invention ]

The lime kiln is the main production equipment of lime, and the improvement of the resource utilization rate and the energy conservation are important in the development of the lime shaft kilns at home and abroad.

However, the existing lime shaft kiln has slow heat dissipation, so that the heat dissipation speed in the kiln is slow, and in addition, the air content rate introduced into the kiln is low, so that the decarburization and the calcination are not efficient, and the energy consumption is high.

[ summary of the invention ]

The object of the present invention is to provide a lime shaft kiln which solves the technical problems mentioned in the background art.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a lime shaft kiln, contains drying zone, preheating zone, calcining zone, deep decarbonization district, cooling zone and the kiln body, the internal portion of kiln is from last to being drying zone, preheating zone, calcining zone, deep decarbonization district and cooling zone down in proper order, be equipped with a plurality of iron bricks of establishing of folding in the cooling zone, and utilize the iron brick dispels the heat.

Preferably, the cooling device further comprises a blower which is communicated with the cooling belt and has an oxygen increasing function.

Preferably, the kiln body is in a circular cylindrical shape.

Preferably, the system further comprises a heat exchanger connected between the blower and the cooling zone, wherein the heat exchanger is used for preheating and heating the air introduced into the cooling zone by using the heat of the kiln gas.

Compared with the prior art, the lime shaft kiln provided by the invention has the following advantages: the cooling zone adopts iron bricks to replace the traditional refractory bricks, the heat dissipation blocks are adopted, and the lime cooling speed is high; an air blower with an oxygen generation function is adopted, so that the oxygen content of air introduced into a cooling zone is increased, and the decarburization and calcination efficiency is improved; the extracted kiln gas heats the air introduced into the kiln, so that the effect of waste heat utilization is achieved, and the environment is protected and the energy is saved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic view of the construction of a lime shaft kiln of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a lime shaft kiln 100, which comprises a drying zone 1, a preheating zone 2, a calcining zone 3, a deep decarburization zone 4, a cooling zone 5 and a kiln body 6, wherein the inside of the kiln body 6 is sequentially provided with the drying zone 1, the preheating zone 2, the calcining zone 3, the deep decarburization zone 4 and the cooling zone 5 from top to bottom, and preferably, the kiln body is in a circular cylindrical shape.

A plurality of iron bricks 51 which are stacked are arranged in the cooling zone 5, and the iron bricks 51 are utilized for heat dissipation, so that the cooling block and lime are high in cooling speed.

The lime shaft kiln 100 further comprises a blower 7 with an oxygen increasing function, which is communicated with the cooling belt 5.

Lime shaft kiln 100 still including connect in air-blower 7 with the heat exchanger 8 between the cold area of getting 5, heat exchanger 8 is used for utilizing the heat of kiln gas to leading into preheat the intensification to the air in cooling zone, specifically, follow high temperature kiln gas that the kiln body 6 was taken out is followed heat exchanger 8 passes through, utilizes the temperature of high temperature kiln gas to right by the air that air-blower 7 blew out preheats the intensification, so, reaches waste heat utilization's effect, more environmental protection and energy saving.

While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. The lime shaft kiln is characterized by comprising a drying zone, a preheating zone, a calcining zone, a deep decarburization zone, a cooling zone and a kiln body, wherein the drying zone, the preheating zone, the calcining zone, the deep decarburization zone and the cooling zone are sequentially arranged in the kiln body from top to bottom, a plurality of iron bricks which are stacked are arranged in the cooling zone, and the heat of the iron bricks is dissipated.

2. The lime shaft kiln of claim 1, further comprising a blower having an oxygen increasing function in communication with the cooling belt.

3. The lime shaft kiln according to claim 1 or 2, characterized in that the kiln body is cylindrical.

4. The lime shaft kiln as set forth in claim 2, further comprising a heat exchanger connected between the blower and the cooling zone, the heat exchanger being adapted to preheat air introduced into the cooling zone by using heat of kiln gas.