Sulfur-containing flue gas heat exchanger, ceramic tile production system and sulfur-containing flue gas heat exchange method

Abstract

The invention discloses a sulfur-containing flue gas heat exchanger, a ceramic tile production system and a sulfur-containing flue gas heat exchange method. The heat exchanger comprises a flue gas inner pipe and an air outer pipe, the outer edge of the flue gas inner pipe is sleeved with the air outer pipe, and an air channel is reserved between the inner wall of the air outer pipe and the outer wall of the flue gas inner pipe; one end of the flue gas inner pipe is connected with a finished product kiln, and the other end of the flue gas inner pipe is connected with a desulfurizing tower; andan air inlet of the air outer pipe is used for introducing air, and an air outlet is used for being connected with a drying kiln. According to the heat exchanger provided by the invention, sulfur-containing flue gas is directly conveyed to the desulfurizing tower by utilizing the flue gas inner pipe, so that the problem that the sulfur-containing flue gas corrodes the drying kiln is solved, and the service life of the drying kiln is prolonged; and air is introduced through the air outer pipe, so that the air in the air channel and the sulfur-containing flue gas in the flue gas inner pipe are subjected to cold and heat exchange, cold air is heated into hot air, the hot air is conveyed to the drying kiln for waste heat utilization, and the function that a traditional ceramic tile productionsystem can utilize waste heat carried by the sulfur-containing flue gas is reserved.

Description

technical field [0001] The invention relates to the technical field of ceramic brick production systems, in particular to a sulfur-containing flue gas heat exchanger, a ceramic brick production system and a sulfur-containing flue gas heat exchange method. Background technique [0002] Ceramic bricks are plate or block ceramic products produced from clay and other inorganic non-metallic raw materials through molding and sintering processes, and are used to decorate and protect the walls and floors of buildings and structures. It is usually shaped by dry pressing, extrusion or other molding methods at room temperature, then dried and fired at a certain temperature. [0003] During the sintering process, the oxidation of sulfur in fuel and ceramic raw materials will form sulfur-containing flue gas (because it is the sulfur-containing flue gas generated during the sintering process, so the sulfur-containing flue gas carries a large amount of waste heat), the existing ceramic til...

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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a sulfur-containing flue gas heat exchanger, a ceramic tile production system and a sulfur-containing flue gas heat exchange method, aiming at solving the problem of drying kilns in the existing ceramic tile production system. The problem of low service life

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