Drying and desulfurization system of annular rotary tunnel kiln

Abstract

The invention relates to a drying and desulfurization system of an annular rotary tunnel kiln. The system comprises a rotary tunnel kiln and a ventilation flue on the rotary tunnel kiln; the ventilation flue comprises a dampproof drying flue and a desulfurization dustproof flue; the rotary tunnel kiln is divided into a dampproof area and a roasting area by a closing gate; an air inlet for introducing air is formed in the tail end of the roasting area; and an afterheat extracting flue sends afterheat air after adobe roasting in the roasting area to an afterheat drying flue through the dampproofdrying flue for drying and damp discharge of adobes not roasted. The system is reasonable in structure and skillful in design, desulfurizes harmful gas, uses the afterheat for damp discharge and drying of the adobes not roasted, reduces the air volume in the desulfurization and dust removal treatment, reduces the enterprise cost, solves such technical problems as random emission of harmful tail gas, atmospheric pollution and incapability of recycling high-temperature afterheat in traditional tunnel kiln production process, and achieves excellent market prospect and development space for the prior art.

Description

technical field [0001] The invention relates to the field of rotary tunnel kilns, in particular to an annular rotary tunnel kiln drying and desulfurization system. Background technique [0002] The tunnel kiln is a kiln similar to a tunnel, which is built of refractory materials, thermal insulation materials and building materials, and is equipped with kiln cars and other vehicles. It is a modern thermal equipment for continuous firing. It is widely used in the roasting production of ceramic products and environmentally friendly brick and tile products, and is also used in metallurgical industries such as abrasives. [0003] When working in a tunnel brick kiln, a large amount of high-temperature heat and sulfur-containing harmful gases will be generated during firing. After the brick is sintered, it needs a lot of cold air and a lot of time to cool down. However, the unfired brick contains a certain amount of water when making bricks. Therefore, it is necessary to carry out...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of the random emission of harmful tail gas in the current tunnel kiln production process, causing air pollution, the inability to recycle high-temperature waste heat, and the insufficient moisture removal of unfired bricks, resulting in unstable internal structures during sintering, affecting the quality of bricks and corporate benefits and other technologies Problem, the present invention provides an annular rotary tunnel kiln drying and desulfurization system to achieve reasonable structure and ingenious design, desulfurize the harmful gas generated by roasting bricks, and use waste heat to heat the air to remove moisture in advance for unfired bricks Drying, use the negative pressure generated by the fan to quickly inhale air to accelerate the cooling of cooked bricks, and at the same time, there is no harmful gas involved, reducing the air volume of desulfurization and dust removal, and reducing the cost of the enterprise

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