Multielement recirculation furnace with function of waste gas backdraft incineration

Abstract

The invention belongs to the technical field of environment-friendly coating facilities and relates to a multielement recirculation furnace with a function of waste gas backdraft incineration. A heating head is arranged on one side of a recirculation furnace body, and a furnace top chamber and a waste gas backdraft blower are arranged above the furnace body. Circulating fans are mounted on two sides of the bottom of the heating head respectively, and an air return pipe is arranged on the upper portion of the furnace body and communicated with the upper portion of the heating head. A heat exchange cylinder externally sleeves a combustion chamber which is arranged on one side of the middle portion of the heating head, the heat exchange cylinder is communicated with one end of a horizontal tubular heat exchanger on the upper portion of the heating head, and the other end of the horizontal tubular heat exchanger is communicated with an inlet of a waste gas exhaust fan. An inlet of the waste gas backdraft blower is communicated with the furnace top chamber, and an outlet of the waste gas backdraft blower is connected to a position, corresponding to the combustion chamber, of the heat exchange cylinder through a connection pipe. The multielement recirculation furnace with the function of waste gas backdraft incineration has the advantages that the waste gas is preheated and incinerated completely prior to emission, so that the requirement on environment friendliness can be met; heat generated in incineration can be used for heat exchange of hot air circulation, combustible components in the waste gas are used effectively, and energy-saving effects are achieved.

Description

technical field [0001] The invention relates to a waste gas backburning incineration hot air circulation furnace, in particular to a waste gas treatment system for comprehensive utilization of paint drying tunnels and leveling chambers, belonging to the technical field of painting environmental protection facilities. Background technique [0002] Painting and subsequent leveling, especially the drying process will volatilize a large amount of organic waste gas. It is the main measure to avoid air pollution at present to incinerate these organic waste gases and then discharge them. [0003] It can be seen from the search that the Chinese patent application number 200420024060.9 discloses a waste gas incinerator. The incinerator includes a shell covered with an insulating layer. The burner, in which the other end of the combustion chamber leads to the exhaust port at the other end of the shell through the tubes, and the exhaust gas inlet on the shell passes through the cavity...

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Problems solved by technology

Although this patented technology realizes the preheating of waste gas to be treated with combustion heat energy with a relatively simple structure, it not only makes reasonable use of heat energy, but also helps to ensure the combustion treatment effect of waste gas, improve efficiency, and reduce the temperature of exhaust gas, but it is difficult It is organically combined directly with the heating equipment of the drying furnace, because the organic waste gas needs to be preheated by heat exchange around the tubes, and then mixed with gas or fuel oil into the combustion chamber for combustion and then discharged. It cannot be used for heating of the drying equipment, so it is not suitable Conducive to energy saving

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