Cement raw material powder distributor even in material distribution

Abstract

The invention discloses a cement raw material powder distributor even in material distribution. The cement raw material powder distributor is mainly composed of a material scattering pipe and a material scattering part. The material scattering pipe is made from a heat-resistant steel plate and a refractory material, and the material scattering pipe is a connecting pipe. An upper end opening of theconnecting pipe and a decomposing chamber in a decomposing furnace or / and a feeding port of a preheater cyclone barrel lifting air pipe cavity coincide and are fixed, and the connecting pipe stretches to the decomposing chamber in the decomposing furnace or / and the middle in the preheater cyclone barrel lifting air pipe cavity from the upper end opening in a downwards oblique manner. The lower end of the material scattering pipe is connected with the material scattering part. The cement raw material powder distributor is simple in structure, raw materials are effectively conveyed to set depth, even material scattering is achieved, and the raw materials are subjected to full heat exchange; and harmful gas precipitation is reduced, meanwhile, air tightness is improved, and energy saving andenvironmental friendliness are achieved.

Description

technical field [0001] The invention relates to a cement raw meal powder distributor, in particular to a cement raw meal powder distributor which is used for evenly distributing the cement raw meal powder in the cement kiln calciner / preheater cyclone ascending air pipe cavity. Background technique [0002] At present, in the dry process cement production process, raw materials need to be calcined into clinker containing corresponding mineral components, and this process is processed by cement kiln. Among them, the kiln tail system of the cement kiln is mainly composed of a preheater and a calciner. Although the structure of the decomposition chamber of the calciner and the ascending air pipe chamber of the preheater cyclone are slightly different, the main structure is roughly the same. 5 are vertical cylinders, which are composed of a steel plate shell 51 as the outer wall and a refractory material 52 as the inner wall. The lower port of the shell is the air inlet 6, the up...

AI Technical Summary

Problems solved by technology

Its shortcoming is that, because the traditional distributor is a side-opening structure, the airtightness is poor, and the raw material is discharged before it falls to a sufficient depth, and the heat exchange time is insufficient. On the one hand, it causes insufficient heating or decomposition. On the other hand, the raw material falls directly from the feed port 2 onto the material spreading plate, the rebound force is limited, and it is difficult to evenly distribute the material to the surrounding area in the entire cross-section of the tube or the furnace, resulting in Generally, a large amount of material is scattered in the tube or on the side of the furnace close to the feed port 2, and cannot be evenly dispersed, so that the thermal resources cannot be fully utilized, the production efficiency is reduced, and harmful gases such as SO2 and NOx are not blocked. Absorbed and precipitated in large quantities, causing air pollution

In the existing technology, in order to alleviate the above technical defects, some factories need to introduce higher temperature gas during operation, resulting in increased coal consumption; and by increasing the air volume, the power consumption of the fan is increased, which increases the production cost. The economic benefits are reduced, and the technical defects have not been completely resolved. On the contrary, due to the increase of the wind force, the raw material will be blocked by the upward wind force when it is thrown into the furnace or pipe, resulting in poor feeding and poor distribution.

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