Energy-saving thermal circulation tunnel kiln

Abstract

The invention discloses an energy-saving thermal circulation tunnel kiln, and relates to the technical field of kilns. The energy-saving thermal circulation tunnel kiln comprises a kiln body, a heat exchange device and a filtering device, wherein the heat exchange device and the filter device are sequentially connected to the kiln body through pipelines; the heat exchange device comprises a sealedheat exchange box body, wherein water is contained in the heat exchange box body, and the kiln body is provided with a gas delivery pipe extending into the water in the heat exchange box body; the other side of the heat exchange box body is provided with a gas outlet pipe located above the water level; a water inlet pipeline and a water outlet pipeline are arranged, wherein the water inlet pipeline and the water outlet pipeline are each provided with an adjusting valve for controlling the flow speed of the water inlet pipeline and the flow speed of the water outlet pipeline; a heat exchange pipe is spirally wound around the water outlet pipeline, wherein the water enters one end of the heat exchange pipe, flows through the peripheral wall of the water outlet pipeline along the heat exchange pipe and then is sent out from the other end; and the filtering device comprises a filtering tank body and an activated carbon filter element, wherein the activated carbon filter element is arranged in the filtering tank body, and tail gas fed by the gas outlet pipe is filtered by the activated carbon filter element and then is discharged from the filtering tank body. According to the energy-saving thermal circulation tunnel kiln, the utilization of kiln tail gas heat can be realized.

Description

technical field [0001] The invention relates to the technical field of kilns, in particular to an energy-saving thermal cycle tunnel kiln. Background technique [0002] Tunnel kiln is used for continuous firing of catalysts, ceramics and other products in a hydrogen protective atmosphere. It has the advantages of continuous production, short cycle, large output, and high quality. Therefore, most ceramics are fired in tunnel kilns. [0003] For example, the authorized announcement number is CN206875952U, which proposes an energy-saving and environment-friendly tunnel kiln, which includes a kiln and a chimney arranged on the top of the kiln. An exhaust gas filtering device is fixedly installed on the top of the chimney, and the exhaust gas filtering device includes an activated carbon filter. [0004] The above-mentioned tunnel kiln can filter the tail gas of the kiln body, but the tail gas discharged during the use of the kiln often has high heat, which is directly discharged...

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Problems solved by technology

[0004] The above-mentioned tunnel kiln can filter the tail gas of the kiln body, but the tail gas discharged during the use of the kiln often has high heat, which is directly discharged into the atmosphere, resulting in a waste of resources

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