High-yield efficient tunnel kiln

Abstract

The invention relates to the technical field of industrial kiln (baked brick tunnel kiln) and discloses a design scheme of a novel high-yield efficient tunnel kiln with a large section. An annual running line arrangement process is adopted, and the tunnel kiln comprises a high-yield efficiency drying kiln and a high-yield efficient calcining kiln, wherein the length of the drying kiln is 75-95 m, the inner width is 4.6-10.4 m, the inner height is 2.0-2.55 m, the kiln wall thickness is 0.37-0.49 m, and the kiln top thickness is 0.3-0.5 m; a manner of top air supply and side air supply is adopted, wherein the air supply volume is 20-40 Nm<3> / kg of water, and the air exhaust volume is 16-36 Nm<3> / kg of water; an air supply section is 60-70% of the total length, a pre-heating section is 30-40% of the total length; the total length of the calcining kiln is 100-140 m, the inner width is 4.6-10.4 m, and the inner height is 2.0-2.55 m; the thickness of a high-temperature section of the kiln wall is 1,080-1,250 mm; the thickness of the kiln top is 616-840 mm; the curve bricks protrude 0 mm from the inner wall of the kiln; 9-11 pairs of smoke discharge gate valves are arranged in a pre-heating zone; and the smoke discharge air quantity is 12,000-18,000 m<3> / h.m<2> of the kiln section area. The tunnel kiln provided by the invention has the advantages of high yield, low heat loss and small investment, is convenient in operation and is a most economical and practical kiln type in current brick making industry.

Description

technical field [0001] The invention relates to the technical field of industrial kilns, in particular to the technical field of sintered brick tunnel kilns. Background technique [0002] Since the introduction of foreign large-section sintered brick tunnel kilns (9.2 meters) in the late 1980s, a lot of research has been done on the design of large-section kilns. The design parameters of the tunnel kiln and the promotion of thousands of production lines in my country have made great contributions to the economic construction of our country. However, the main problems at present are: the design output of the large-section tunnel kiln is low, the site operation is difficult, the production cannot be reached for a long time, and the operation effect is poor. People in the building materials industry generally hope that a high-yield, high-efficiency, large-section tunnel kiln will come out to meet the needs of the rapid development of the brick and tile industry. Invention con...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low output of large-section tunnel kiln, the present invention adopts the following technical solutions:

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