Split type water-cooling heat exchanger for secondary combustion chamber of anode furnace

Abstract

The utility model relates to a split type water-cooling heat exchanger for a secondary combustion chamber of an anode furnace. The split type water-cooling heat exchanger comprises at least two heat exchanger bodies, the heat exchanger body comprises a water inlet main pipe, a water return main pipe and a supporting frame. The water inlet main pipe communicates with a plurality of water inlet branch pipes. Each water inlet branch pipe penetrates through the supporting frame downwards and is connected with a heat exchange pipe. The water return main pipe is communicated with a plurality of water return branch pipes corresponding to the water inlet branch pipes; the water return branch pipes penetrate through the supporting frame downwards and communicate with the heat exchange pipes correspondingly. And each water inlet branch pipe and each water return branch pipe are respectively provided with a stop valve. According to the utility model, through the stop valves, each water inlet branch pipe and each water return branch pipe can independently control the switch to pass water, so that timely cut-off can be ensured after water leakage, and furnace shutdown treatment is avoided; according to the heat exchanger, the at least two heat exchanger bodies are arranged, when one heat exchanger body fails, the heat exchanger body can be taken out from the position above the flue to be replaced, and the replacement convenience and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to anode furnace technical field, especially related to a split type water cooling heat exchanger of anode furnace secondary combustion chamber. BACKGROUND

[0002] In the process of smelting crude copper in the anode furnace, the incomplete combustion gas in the furnace body enters the secondary combustion chamber for secondary combustion. Because the flue gas temperature at the outlet of the secondary combustion chamber is high, direct emission will cause the failure of the dust collector and the failure of the subsequent flue gas treatment system. Therefore, a water cooling heat exchanger needs to be installed at the outlet of the flue to cool the flue gas of the secondary combustion, so that the flue gas temperature is reduced to meet the operating condition requirements of the dust collector in the next process.

[0003] During the heat exchange process of the flue gas and the heat exchanger, the heat exchanger tube bundle will be corroded, causing the heat exchanger tube bundle to leak. And the installation space of the water cooling heat exchanger is small, so the equipment needs to be installed first, then the flue is built and sealed. This way, if the heat exchanger tube bundle leaks during normal production, it cannot be shut off in time, and the furnace needs to be cooled down and the water supply needs to be cut off. The leaking branch pipeline needs to be disconnected and welded, and if there are many leaking pipelines, it cannot meet the cooling and temperature reduction requirements, and the water cooling heat exchanger needs to be replaced as a whole, which is complicated and seriously restricts production. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a split type water cooling heat exchanger of anode furnace secondary combustion chamber, which can be disassembled and replaced in parts, is simple to replace, and improves production efficiency.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a split type water cooling heat exchanger of anode furnace secondary combustion chamber, which comprises at least two heat exchanger bodies.

[0006] The heat exchanger body comprises a water inlet main pipe, a water return main pipe and a support frame, the water inlet main pipe is horizontally arranged above the support frame, the water inlet main pipe is connected with a plurality of water inlet branch pipes, each water inlet branch pipe passes through the support frame downwardly and is connected with a heat exchange pipe, the heat exchange pipe is arranged in a serpentine shape, the water return main pipe is horizontally arranged on one side of the water inlet main pipe, the water return main pipe is connected with a plurality of water return branch pipes corresponding to the water inlet branch pipes, a plurality of water return branch pipes pass through the support frame downwardly and are connected with the heat exchange pipes away from the water inlet branch pipes, respectively, a stop valve is arranged on each water inlet branch pipe and each water return branch pipe, and at least two heat exchanger bodies are arranged in sequence, and two water inlet main pipes and two water return main pipes of adjacent heat exchanger bodies are connected, respectively.

[0007] Preferably, the stop valves on the adjacent water inlet branch pipes and water return branch pipes are arranged in a staggered manner.

[0008] Preferably, the water inlet main pipe and the water return main pipe are arranged on one side of the top of the water inlet branch pipe and the water return branch pipe.

[0009] Preferably, two support frames adjacent to the heat exchanger body are staggered and overlapped.

[0010] Compared with the prior art, the anode furnace secondary combustion chamber split type water-cooled heat exchanger has the following advantages:

[0011] (1) Each water inlet branch pipe and each water return branch pipe can be individually controlled to open and close the water, so that the water can be cut off in time after leakage, and the furnace shutdown treatment is avoided;

[0012] (2) By arranging at least two heat exchanger bodies, when one of the heat exchanger bodies fails, the heat exchanger body can be removed from the top of the flue for replacement, improving the convenience and efficiency of replacement;

[0013] (3) Simple design, easy to use. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic view of the utility model;

[0015] Fig. 2 is a side view of the heat exchanger body;

[0016] Fig. 3 is a structural schematic view of the heat exchanger body in the flue. DETAILED DESCRIPTION

[0017] The utility model will be further described below in combination with the drawings and specific embodiments.

[0018] As shown in Figs. 1-3 , a kind of anode furnace secondary combustion chamber split type water-cooled heat exchanger, including at least two heat exchanger bodies;

[0019] The heat exchanger body includes water inlet main pipe 1, water return main pipe 2 and support frame 3, and the water inlet main pipe 1 is horizontally arranged above the support frame 3;The water inlet main pipe 1 is communicated with several water inlet branch pipes 11;Each water inlet branch pipe 11 passes through the support frame 3 downwards, and is connected with heat exchange pipe 4, and several water inlet branch pipes 11 are fixed by support frame 3, wherein support frame 3 is filled with refractory fiber material, and support frame 3 is fixed and sealed with the top of the flue of secondary combustion chamber, and flue gas flows below support frame 3;The heat exchange pipe 4 is serpentine arranged, after cooling water is sent into water inlet main pipe 1, cooling water flows into several water inlet branch pipes 11 and several heat exchange pipes 4 in turn, and is exchanged with flue gas by several heat exchange pipes 4;

[0020] The water return main pipe 2 is arranged laterally on one side of the water inlet main pipe 1; the water return main pipe 2 is communicated with a plurality of water return branch pipes 21 corresponding to the water inlet branch pipes 11; the plurality of water return branch pipes 21 all pass through the support frame 3 downward and are respectively communicated with a plurality of heat exchange pipes 4 away from the water inlet branch pipes 11; the water return after heat exchange of the plurality of heat exchange pipes 4 flows out from the plurality of water return branch pipes 21 and the water return main pipe 2 in sequence;

[0021] The stop valve 5 is arranged on each of the water inlet branch pipe 11 and the water return branch pipe 21; when one of the heat exchange pipes 4 leaks, the stop valves 5 on the water inlet branch pipe 11 and the water return branch pipe 21 connected with the heat exchange pipe 4 are closed, so that the cooling water in the water inlet branch pipe 11 is prevented from flowing into the heat exchange pipe 4 and the water return in the water return branch pipe 21 is prevented from flowing back into the heat exchange pipe 4; each of the water inlet branch pipe 11 and the water return branch pipe 21 can be controlled to be opened or closed by the stop valve 5, so that the water inlet branch pipe 11 and the water return branch pipe 21 can be controlled individually, the leakage can be cut off in time, and the shutdown treatment is avoided.

[0022] The plurality of heat exchanger bodies are arranged in sequence; two water inlet main pipes 1 and two water return main pipes 2 of adjacent heat exchanger bodies are connected respectively; at least two heat exchanger bodies are arranged in sequence at the flue outlet of the secondary combustion chamber; the water inlet main pipe 1 of the outermost heat exchanger body extends out of the flue and is connected with an external water source; the water inlet main pipe 1 and the water return main pipe 2 of the innermost heat exchanger body are closed by a head near the internal end of the secondary combustion chamber; the external water source sequentially feeds cooling water into the water inlet main pipe 1 of each heat exchanger body; after heat exchange, the water return of each heat exchanger body flows out from the water return main pipe 2; when one of the heat exchanger bodies fails, the heat exchanger body can be taken out from above the flue for replacement, so that the convenience and efficiency of replacement are improved.

[0023] In the embodiment, the stop valves 5 on the adjacent water inlet branch pipes 11 and water return branch pipes 21 are arranged in staggered mode; by arranging the stop valves 5 in staggered mode, the distance between the adjacent water inlet branch pipes 11 and water return branch pipes 21 is reduced, so that the volume of the heat exchanger body is reduced.

[0024] In the embodiment, the water inlet main pipe 1 and the water return main pipe 2 are arranged on one side of the top of the water inlet branch pipe 11 and the water return branch pipe 21; the water inlet main pipe 1 and the water return main pipe 2 are connected with each water inlet branch pipe 11 and water return branch pipe 21 through elbows, so that the height of the heat exchanger body is reduced.

[0025] In the embodiment, the two support frames 3 of adjacent heat exchanger bodies are overlapped in staggered mode; when the support frame 3 of one heat exchanger body is welded and fixed to the top of the flue, the support frame 3 of another heat exchanger body is overlapped with the support frame 3 in the flue in staggered mode, so that each heat exchanger body is fixed at the same height and the water inlet main pipe 1 and the water return main pipe 2 of adjacent heat exchanger bodies are conveniently connected.

[0026] The utility model uses method: after the cooling water is sent into the water inlet main pipe 1 of the heat exchanger body of the outermost flue, the cooling water flows into the water inlet main pipe 1 of each heat exchanger body in proper order, and the cooling water in the water inlet main pipe 1 flows into several water inlet branch pipes 11 and several heat exchange pipes 4 in proper order, the several heat exchange pipes 4 carry out heat exchange with the flue gas, and the backwater after heat exchange flows out from several backwater branch pipes 21 and the backwater main pipe 2 in proper order.

Claims

1. A split-type water-cooled heat exchanger for the secondary combustion chamber of an anode furnace, characterized in that, Includes at least two heat exchanger bodies; The heat exchanger body includes an inlet main pipe (1), a return main pipe (2), and a support frame (3). The inlet main pipe (1) is horizontally arranged above the support frame (3). The inlet main pipe (1) is connected to several inlet branch pipes (11). Each inlet branch pipe (11) passes downward through the support frame (3) and is connected to a heat exchange tube (4). The heat exchange tube (4) is arranged in a serpentine pattern. The return main pipe (2) is horizontally arranged on one side of the inlet main pipe (1). The return main pipe (2) is connected to... There are several return water branch pipes (21) corresponding to the inlet branch pipe (11); several return water branch pipes (21) pass downward through the support frame (3) and are respectively connected to the end of several heat exchange tubes (4) away from the inlet branch pipe (11); each inlet branch pipe (11) and each return water branch pipe (21) is equipped with a shut-off valve (5); at least two heat exchanger bodies are arranged in sequence; two inlet main pipes (1) and two return water main pipes (2) of adjacent heat exchanger bodies are respectively connected.

2. The split-type water-cooled heat exchanger for the secondary combustion chamber of the anode furnace according to claim 1, characterized in that, The shut-off valves (5) on the adjacent inlet branch pipe (11) and return branch pipe (21) are staggered.

3. The split-type water-cooled heat exchanger for the secondary combustion chamber of the anode furnace according to claim 1, characterized in that, The main inlet pipe (1) and the main return pipe (2) are located on one side of the top of the branch pipe (11) and the branch pipe (21).

4. The split-type water-cooled heat exchanger for the secondary combustion chamber of the anode furnace according to claim 1, characterized in that, The two support frames (3) of the adjacent heat exchanger body are staggered and overlapped.

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