Coal-fired sleeve shaft kiln injection unblocking system

Abstract

The invention relates to a coal-fired sleeve shaft kiln injection unlocking system. The coal-fired sleeve shaft kiln injection unlocking system comprises a compressed air storage tank; the compressed air storage tank is connected with injection unblocking units through pipelines; the injection unblocking units are arranged on the lower portion of every nozzle combustion chamber of a sleeve shaft kiln; every injection unblocking unit comprises an air cannon and a heat resistant expansion nozzle; the air cannons are arranged closely adjacent to the lower portions of the nozzle combustion chambers and are fixed on a kiln casing through a support; one ends of the heat resistant nozzles and air cannon outlets are connected through flanges; the other ends of the heat resistant nozzles extend into the interior of a kiln body; the heat resistant expansion nozzles eject high-pressure airflows and impact material surfaces and hardening of the material surfaces is crushed, and flowing of materials is recovered. The coal-fired sleeve shaft kiln injection unlocking system is simple and reasonable in structure and convenient to install and detach and effectively solving the blocking problem of the lower portion of the coal-fired sleeve shaft kiln arch bridge, is small in invest, low in operation cost and simple in maintenance, improves the lime kiln operation stability and the operability, reduces the time of maintenance slow-down kiln and creates considerable economic benefits.

Description

technical field [0001] The invention relates to a coal-fired sleeve shaft kiln, in particular to an injection and plugging removal system for a coal-fired sleeve shaft kiln. Background technique [0002] Sleeve shaft kiln is a process equipment for calcining raw materials, which has a unique structure and superior technical performance. The combustion chamber of the sleeve kiln is divided into upper and lower layers, and each layer is evenly distributed along the circumference of the kiln body. Each combustion chamber and the inner cylinder are connected by an arch bridge made of refractory bricks. like figure 1 As shown, the material 12 forms a V-shaped material surface 15 at the lower part of the arch bridge 14, and the pulverized coal burns in the space formed by the arch bridge 14 and the material surface 15. Because the ash content of pulverized coal combustion is easy to accumulate on the material surface, it forms a eutectic with the impurities in the raw material, ...

AI Technical Summary

Problems solved by technology

Because the ash content of pulverized coal combustion is easy to accumulate on the material surface, it forms a eutectic with the impurities in the raw material, and hardens on the material surface, making the material unable to fall smoothly and blocking the smooth passage of the air flow, which is not conducive to the technical indicators of the kiln. control, seriously affecting normal production

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