Environment-friendly furnace for aluminum strip production

Abstract

The utility model discloses an environment-friendly furnace for aluminum strip production, which comprises a furnace body, combustion chambers are symmetrically arranged on two sides of the center of the furnace body, combustors are mounted on one sides of the combustion chambers, air inlet chambers are arranged at the centers of the top end and the bottom end of the furnace body, and the air inlet chambers are communicated with the combustion chambers. The gas inlet chambers in the centers of the top end and the bottom end of the furnace body are symmetrically arranged, a gas inlet pipe is connected between the two gas inlet chambers, a reversing air valve is installed in the center of a pipe body of each gas inlet chamber, a gas inlet of each reversing air valve is connected with a waste gas inlet pipe, and one side of each gas inlet chamber is connected with a gas outlet pipe. And heat storage chambers are arranged on the furnace body and located on the two sides of the air inlet chamber, the heat storage chambers are filled with heat storage bodies, through the annular design, the equipment structure is compact, and the occupied area of the equipment is reduced. The regenerative chambers can be more intensively arranged in the furnace body of the annular structure, the number of the regenerative chambers is increased, meanwhile, the occupied area of the equipment is reduced, and the larger treatment capacity of organic waste gas is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of regenerative thermal incinerator, specifically relates to an environmental protection furnace for aluminium strip production. BACKGROUND

[0002] In the aluminium strip production process, waste gas containing organic pollutants will be produced. The traditional treatment methods include direct combustion, catalytic combustion and the like, but these methods have problems of low thermal efficiency, high operation cost, large land occupation and the like. The regenerative thermal incinerator (Regenerative Thermal Oxidizer, RTO for short) is a relatively advanced waste gas treatment equipment at present, and its working principle is to store and release heat through the regenerator, preheat the waste gas and decompose the organic pollutants. The number and structure of the regenerative chambers have important influences on the heat recovery efficiency and system pressure drop. Generally speaking, the more the number of regenerative chambers is, the higher the purification efficiency is, but the land occupation will also increase. Therefore, how to reduce the land occupation of the equipment while ensuring the purification efficiency is a technical problem in the current environmental protection furnace design.

[0003] In the prior art, the common RTO equipment adopts multiple independent regenerative chambers, and these regenerative chambers are usually arranged in a straight line, so that the overall length of the equipment is relatively long, and the land occupation is relatively large. In addition, due to the distance limitation between the regenerative chambers, the heat exchange efficiency is also affected to a certain extent. Therefore, the RTO equipment in the prior art has limitations in improving the thermal efficiency and treatment capacity, so the utility model provides an environmental protection furnace for aluminium strip production, which effectively reduces the land occupation of the equipment while ensuring the purification efficiency, and improves the thermal efficiency and treatment capacity.

[0004] For the problems in the related art, no effective solution has been proposed at present. TECHNICAL SOLUTION

[0005] To achieve the above object, the utility model provides the following technical scheme: an environmental protection furnace for aluminium strip production, comprising a furnace body, combustion chambers are arranged on both sides of the center of the furnace body, the combustion chambers on both sides of the furnace body are symmetrically arranged, a burner is installed on one side of the combustion chamber, air inlet chambers are arranged at the center of the top end and the bottom end of the furnace body, the air inlet chambers at the center of the top end and the bottom end of the furnace body are symmetrically arranged, an air inlet pipe is connected between the two air inlet chambers, a reversing air valve is installed at the center of the air inlet pipe body, a waste gas inlet pipe is connected to the air inlet of the reversing air valve, an air outlet pipe is connected to one side of the two air inlet chambers, regenerative chambers are arranged on both sides of the air inlet chamber of the furnace body, and a regenerator is filled in the regenerative chamber.

[0006] As a preferred technical scheme of the utility model, the furnace body is annular as a whole, and the inside is a hollow structure.

[0007] As a preferred technical scheme of the utility model, the air inlet chamber is connected with the air inlet pipe and the air outlet pipe respectively, and each connection is provided with an electric air valve.

[0008] As a preferred technical scheme of the utility model, the furnace body comprises a heat-resistant layer, an outer side of the heat-resistant layer is provided with a heat preservation layer, and an outer side of the heat preservation layer is provided with a protective layer.

[0009] As a preferred technical scheme of the utility model, the heat-resistant layer is made of refractory aluminum silicate fiber, the heat preservation layer is made of ceramic fiber, and the protective layer is made of carbon steel plate.

[0010] As a preferred technical scheme of the utility model, the heat storage body is a honeycomb ceramic material.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The utility model discloses a ring design, make the equipment structure compact, reduce the land area of equipment. Compared with the prior art, the utility model has the beneficial effects that: BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0014] Fig. 1 It is the front view of the utility model;

[0015] Fig. 2 It is the section view of the utility model;

[0016] In the drawing: 1, furnace body;2, combustion chamber;3, burner;4, air inlet chamber;5, air inlet pipe;6, reversing air valve;7, waste gas inlet pipe;8, air outlet pipe;9, heat storage chamber;10, heat storage body;11, electric air valve. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0018] Embodiment

[0019] Please refer to Figs. 1-2 The present application provides the following technical scheme: an environment-friendly furnace for aluminum strip production, comprising a furnace body 1, the furnace body 1 is annular as a whole and has a hollow structure inside, combustion chambers 2 are arranged on both sides of the center of the furnace body 1, the combustion chambers 2 on both sides of the furnace body 1 are symmetrically arranged, a burner 3 is arranged on one side of the combustion chamber 2, air inlet chambers 4 are arranged at the center of the top end and the bottom end of the furnace body 1, the air inlet chambers 4 at the center of the top end and the bottom end of the furnace body 1 are symmetrically arranged, an air inlet pipe 5 is connected between the two air inlet chambers 4, a reversing air valve 6 is arranged at the center of the pipe body of the air inlet pipe 5, a waste gas inlet pipe 7 is connected to the air inlet of the reversing air valve 6, an air outlet pipe 8 is connected to one side of each of the two air inlet chambers 4, heat storage chambers 9 are arranged on both sides of the air inlet chambers 4 of the furnace body 1, and the heat storage chambers 9 are filled with heat storage bodies 10. In the present embodiment, the annular design makes the equipment structure compact and reduces the floor area. The annular furnace body 1 is arranged with the heat storage chambers 9, the number of the heat storage chambers 9 is increased, the floor area of the equipment is reduced, a larger processing capacity is ensured, and the environment with limited space is suitable. The direction of air inlet and air outlet is periodically switched to ensure the processing and thermal efficiency. The compact structure reduces heat loss and improves energy utilization efficiency.

[0020] In order to facilitate the prevention of organic waste gas from being discharged before being treated, in the present embodiment, as a preferred technical scheme of the present application, an electric air valve 11 is arranged at the connection between each of the air inlet chambers 4 and the air inlet pipe 5 and the air outlet pipe 8.

[0021] In order to ensure the heat resistance, heat preservation and strength of the furnace body 1, in the present embodiment, as a preferred technical scheme of the present application, the furnace body 1 comprises a heat-resistant layer, a heat preservation layer is arranged on the outer side of the heat-resistant layer, and a protective layer is arranged on the outer side of the heat preservation layer. The material of the heat-resistant layer is refractory aluminum silicate fiber, the material of the heat preservation layer is ceramic fiber, and the material of the protective layer is carbon steel plate.

[0022] In order to have good heat storage and heat dissipation performance and effectively improve the utilization rate of heat energy, in the present embodiment, as a preferred technical scheme of the present application, the heat storage body 10 is a honeycomb ceramic material.

[0023] In summary, with the help of the above-mentioned technical solution of this utility model, during use, the organic waste gas is introduced into the waste gas inlet pipe 7 by the induced draft fan. When passing through the reversing air valve 6, the reversing air valve 6 first opens the top air inlet pipe 5, so that the organic waste gas first enters the top air inlet chamber 4 through the top air inlet pipe 5. The organic waste gas enters the heat storage chambers 9 and heat storage bodies 10 on both sides from the air inlet chamber 4. The heat storage bodies 10 release heat, and the organic waste gas is heated to about 800°C and then burned in the combustion chamber 2. The high-temperature clean gas after combustion passes through the heat storage bodies 10 on both sides of the bottom. The heat storage bodies 10 on both sides of the bottom absorb heat, and the high-temperature gas is cooled by the heat storage bodies 10 on both sides of the bottom. Then, the electric air valve 11 of the bottom air inlet chamber 4 outlet pipe 8 is opened, and the gas is discharged through the outlet pipe 8 to the chimney. Then, the reversing air valve 6 switches, and the organic waste gas enters from the bottom inlet chamber 4, flows upward through the bottom heat storage body 10, and releases heat to heat the waste gas. After the waste gas is oxidized and burned in the combustion chambers 2 on both sides of the furnace body 1, it passes through the top heat storage bodies 10 on both sides, absorbs heat, and the high-temperature gas is cooled before being discharged through the outlet pipe 8 of the top inlet chamber 4. This periodic switching allows for continuous treatment of organic waste gas, with a large single treatment capacity and a small footprint, while requiring little or no additional energy, thus achieving energy-saving effects.

[0024] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An environmentally friendly furnace for aluminum strip production, comprising a furnace body (1), characterized in that: Combustion chambers (2) are provided on both sides of the center of the furnace body (1). The combustion chambers (2) on both sides of the furnace body (1) are symmetrically arranged. A burner (3) is installed on one side of the combustion chamber (2). An air inlet chamber (4) is provided at the center of the top and bottom of the furnace body (1). The air inlet chambers (4) at the center of the top and bottom of the furnace body (1) are symmetrically arranged. An air inlet pipe (5) is connected between the two air inlet chambers (4). A reversing air valve (6) is installed at the center of the air inlet pipe (5). An exhaust gas inlet pipe (7) is connected to the air inlet of the reversing air valve (6). An exhaust pipe (8) is connected to one side of each of the two air inlet chambers (4). A heat storage chamber (9) is provided on both sides of the air inlet chamber (4) of the furnace body (1). The heat storage chamber (9) is filled with a heat storage body (10).

2. The environmentally friendly furnace for aluminum strip production according to claim 1, characterized in that: The furnace body (1) is ring-shaped and has a hollow interior.

3. The environmentally friendly furnace for aluminum strip production according to claim 1, characterized in that: Electric air valves (11) are installed at the connection points of the air inlet chamber (4) with the air inlet pipe (5) and the air outlet pipe (8).

4. The environmentally friendly furnace for aluminum strip production according to claim 1, characterized in that: The furnace body (1) includes a heat-resistant layer, an insulation layer is provided on the outside of the heat-resistant layer, and a protective layer is provided on the outside of the insulation layer.

5. The environmentally friendly furnace for aluminum strip production according to claim 4, characterized in that: The heat-resistant layer is made of refractory aluminum silicate fiber, the insulation layer is made of ceramic fiber, and the protective layer is made of carbon steel plate.

6. The environmentally friendly furnace for aluminum strip production according to claim 1, characterized in that: The heat storage body (10) is a honeycomb ceramic material.

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