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Large-scale lime shaft kiln with central burning nozzle

A shaft kiln and lime technology, applied in the field of kilns, can solve problems such as insufficient heating

Active Publication Date: 2008-02-06
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the limitations of current gas-fired lime shaft kiln fueled by low calorific value gas, the purpose of this invention is to provide a large lime shaft kiln with a central burner to solve the problem of using peripheral gas burners in a large lime shaft kiln. , the problem of insufficient heat supply to the kiln center material, so as to achieve the purpose of improving product quality and output, and making the lime shaft kiln develop to a large scale

Method used

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  • Large-scale lime shaft kiln with central burning nozzle
  • Large-scale lime shaft kiln with central burning nozzle
  • Large-scale lime shaft kiln with central burning nozzle

Examples

Experimental program
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Embodiment Construction

[0022] As shown in Figure 1 and Figure 2, the center burner of a large lime shaft kiln is composed of a support beam 1, a center column 2, a center top burner 4, and a center side burner 3; Brick 6 protection.

[0023] The center burner is divided into center top burner 4 and center side burner 3 according to the different heating areas. The center side burner 3 is a combination of gas nozzle and air nozzle. The air nozzle is located around the gas nozzle. After being sprayed out separately with the air, it is partially mixed and burned in the burner brick, and then it is sprayed into the material layer at a high speed and continues to burn. The center top burner 4 is responsible for the heat supply within the area of ​​the material column at the top of the center burner, and the center side burner adopts multiple gas nozzles and air nozzles radially arranged in two rows up and down at close distances and multi-points, and is responsible for the central area of ​​the kiln. He...

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Abstract

The invention relates to a large-sized lime shaft kiln with a central burner tip. The invention is characterized in that: the shaft kiln is provided with the central burner tip which is arranged on the lower part of the kiln and provided with refractory lining bricks all round; the central burner tip is divided into a central top burner tip and a central side burner tip according to the difference in burning area coverage; a central post supported by a support beam is respectively arranged on the lower part of the central top burner tip and the central side burner tip; and the central post and the support beam are still taken as channels to convey gas and air. The invention solves the problem of insufficient heat supply to materials in the center of the kiln when the large-sized lime shaft kiln adopts a circumferential gas burner tip, thereby the quality and quantity of products are improved and the lime shaft kiln is made to develop towards large scale.

Description

technical field [0001] The invention relates to a kiln used in the lime industry, in particular to a large lime shaft kiln using a central gas burner. Background technique [0002] At present, domestic gas with low calorific value (heat value 3000-5500kJ / m N 3 , such as blast furnace gas, converter gas, producer gas, calcium carbide furnace gas and mixed gas, etc.) gas-fired lime shaft kiln fueled by peripheral gas burners, the volume of the kiln is limited, the production capacity is small, and the investment High, difficult to large-scale development. With the expansion of the production scale of iron and steel enterprises, the lime industry needs a large-scale lime shaft kiln fueled by low calorific value gas to replace the existing small and medium-sized lime shaft kilns to meet the needs of the industry's development. Contents of the invention [0003] Aiming at the limitations of current gas-fired lime shaft kiln fueled by low calorific value gas, the purpose of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/12
Inventor 赵宝海王洪涛杨耕桃尹高初建民
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC