Combined spray box

Abstract

The utility model relates to the technical field of spraying boxes, in particular to a combined spraying box which comprises a shell, a base is fixed to the bottom of the shell, a smoke inlet is formed in the bottom of the side wall of the shell, a smoke outlet is formed in the top of the side wall of the shell, and an upper-layer disc pipeline and a lower-layer disc pipeline are fixed to the middle of the side wall of an inner cavity of the shell. A fan-shaped atomizing nozzle is arranged on the inner diameter of the upper-layer disc pipeline, and a conical atomizing nozzle is arranged on the inner diameter of the lower-layer disc pipeline; two groups of atomized water input pipelines penetrate through the side wall of the shell and then are respectively communicated with the upper-layer disc pipeline and the lower-layer disc pipeline; the base is longitudinally provided with an atomized water bottom outlet, the bottom of the side wall of the shell is provided with an atomized water side wall outlet, the fan-shaped atomizing nozzles on the upper layer are matched with the conical atomizing nozzles on the lower layer, the contact area of atomized water and high-temperature flue gas is increased, and the flue gas is prevented from damaging follow-up pipelines and equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of spray boxes, specifically a combined spray box. Background Technology

[0002] During the copper smelting process, a large amount of high-temperature flue gas is generated. This flue gas is not only hot but also contains dust and corrosive components. If not effectively treated, it can cause serious damage to subsequent flue gas pipelines and desulfurization systems, shorten equipment lifespan, increase maintenance costs, and even lead to safety accidents. Currently, copper smelting companies use simple single-point spray devices to treat the flue gas in emergency flue ducts. These devices typically have only one or a few nozzles that spray water directly into a spray box. Their working principle is to utilize the contact between water and flue gas to absorb heat and cause dust to settle.

[0003] However, single-point spraying has a small coverage area and cannot fully contact the high-temperature flue gas, resulting in an unsatisfactory cooling effect. It is difficult to reduce the flue gas temperature to a suitable range and cannot effectively protect subsequent pipelines and equipment. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a combined spray box, which uses an upper fan-shaped atomizing nozzle and a lower cone-shaped atomizing nozzle to increase the contact area between the atomized water and the high-temperature flue gas, preventing the flue gas from damaging subsequent pipelines and equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A combined spray box includes a shell, a base fixed to the bottom of the shell, a flue gas inlet at the bottom of the side wall of the shell, a flue gas outlet at the top of the side wall of the shell, an upper plate pipe and a lower plate pipe fixed in the middle of the inner cavity side wall of the shell, a fan-shaped atomizing nozzle installed in the inner diameter of the upper plate pipe, and a conical atomizing nozzle installed in the inner diameter of the lower plate pipe; two sets of atomizing water input pipes pass through the side wall of the shell and are respectively connected to the upper plate pipe and the lower plate pipe; the base has a bottom outlet for atomizing water in the longitudinal direction, and the bottom of the side wall of the shell has a side wall outlet for atomizing water.

[0007] Furthermore, an overflow prevention baffle is fixed to the outer periphery of the flue gas inlet, and bolt holes are provided on the surface of the overflow prevention baffle.

[0008] Furthermore, the outer wall of the shell is fixed with axial reinforcing ribs and radial reinforcing ribs.

[0009] Furthermore, the water supply pressure of the upper and lower plate pipes is 0.3 MPa.

[0010] This utility model has the following beneficial effects:

[0011] 1. This utility model uses an upper fan-shaped atomizing nozzle in combination with a lower cone-shaped atomizing nozzle to increase the contact area between the atomized water and the high-temperature flue gas, thus preventing the flue gas from damaging subsequent pipelines and equipment.

[0012] 2. This utility model uses a large number of layered atomizing nozzles, which enable the spray to fully cover the flue gas circulation area, forming a highly efficient dust collection net. The dust content in the treated flue gas is greatly reduced, which can meet the strict environmental emission standards, reduce the workload of subsequent dust collection equipment, and improve the operating efficiency of the entire dust removal system.

[0013] 3. In this utility model, the water supply pressure of both the upper and lower plate pipes is set to 0.3 MPa, so that the conical atomizing nozzle sprays out a uniform and fine water mist, and the fan-shaped atomizing nozzle forms a complete, stable, and horizontal water curtain. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a bottom view of the present invention;

[0016] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the upper-level piping structure;

[0018] Figure 5 This is a schematic diagram of the lower-level piping structure.

[0019] The attached diagram is labeled as follows:

[0020] 1. Flue gas outlet; 2. Atomizing water inlet pipe; 3. Flue gas inlet; 4. Overflow baffle; 5. Bolt hole; 6. Atomizing water side wall outlet; 7. Atomizing water bottom outlet; 8. Shell; 9. Axial reinforcing rib; 10. Radial reinforcing rib; 11. Base; 12. Upper plate pipe; 13. Fan-shaped atomizing nozzle; 14. Lower plate pipe; 15. Conical atomizing nozzle. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] like Figures 1-5As shown, the combined spray box of this embodiment includes a shell 8, a base 11 fixed to the bottom of the shell 8, a flue gas inlet 3 at the bottom of the side wall of the shell 8, a flue gas outlet 1 at the top of the side wall of the shell 8, an upper plate pipe 12 and a lower plate pipe 14 fixed in the middle of the inner cavity side wall of the shell 8, a fan-shaped atomizing nozzle 13 arranged in the inner diameter of the upper plate pipe 12, and a conical atomizing nozzle 15 arranged in the inner diameter of the lower plate pipe 14; two sets of atomizing water input pipes 2 pass through the side wall of the shell 8 and are connected to the upper plate pipe 12 and the lower plate pipe 14 respectively; the base 11 has a bottom outlet 7 for atomizing water in the longitudinal direction, and the bottom of the side wall of the shell 8 has a side wall outlet 6 for atomizing water.

[0023] This invention utilizes an upper fan-shaped atomizing nozzle 13 in conjunction with a lower conical atomizing nozzle 15 to increase the contact area between the atomized water and the high-temperature flue gas, preventing damage to subsequent pipelines and equipment. The device employs numerous layered atomizing nozzles, ensuring comprehensive coverage of the flue gas circulation area, forming a highly efficient dust collection net. The dust content in the treated flue gas is significantly reduced, meeting stringent environmental emission standards, reducing the workload of subsequent dust collection equipment, and improving the overall operating efficiency of the dust removal system.

[0024] Furthermore, an overflow prevention baffle 4 is fixed to the outer periphery of the flue gas inlet 3, and bolt holes 5 are provided on the surface of the overflow prevention baffle 4.

[0025] The overflow baffle 4 fixes the housing 8 to the front-mounted equipment and prevents high-temperature steam from overflowing when it enters the housing 8.

[0026] Furthermore, the outer wall of the shell 8 is fixed with axial reinforcing ribs 9 and radial reinforcing ribs 10.

[0027] The shell 8 is reinforced by axial stiffeners 9 and radial stiffeners 10.

[0028] Furthermore, the water supply pressure of the upper plate pipe 12 and the lower plate pipe 14 is 0.3 MPa.

[0029] The water supply pressure of both the upper plate pipe 12 and the lower plate pipe 14 is set to 0.3 MPa, so that the cone-shaped atomizing nozzle 15 sprays out a uniform and fine water mist, and the fan-shaped atomizing nozzle 13 forms a complete, stable and horizontal water curtain.

[0030] The method of using this utility model is as follows:

[0031] Water from the furnace body circulating water system first enters the lower plate pipe 14. Under a certain water pressure, the water is sprayed out at high speed from eight conical atomizing nozzles 15, forming fine water mist particles. These water mist particles move downward under the action of gravity and mix thoroughly with the rising high-temperature flue gas. Through the special design of the conical atomizing nozzles 15, the water mist particles are evenly distributed, greatly increasing the contact area with the flue gas. In the above process, the water mist rapidly reduces the temperature of the flue gas by evaporating and absorbing heat. At the same time, it collides and agglomerates with the dust particles in the flue gas, causing the dust particles to increase in weight and settle.

[0032] After initial treatment by the lower spray system, the flue gas continues to rise and enters the upper spray area. Water in the upper tray pipe 12 is sprayed from four fan-shaped atomizing nozzles 13, forming a horizontal water curtain. This water curtain further intercepts and cools the flue gas, ensuring that flue gas not fully treated by the lower layer receives secondary cooling and dust removal. The horizontal water curtain effectively blocks and captures dust particles escaping from the lower layer, while further absorbing heat from the flue gas, thus further reducing its temperature.

[0033] Practical application tests show that, under the same operating conditions, compared to traditional simple spray devices, the combined coil-type spray box of this invention can reduce the flue gas temperature by 50-80°C. This allows subsequent flue gas ducts to transport flue gas within a tolerable temperature range, effectively extending the service life of pipes, valves, and other equipment, and reducing equipment failures and maintenance frequency caused by high temperatures. The dust removal efficiency is 30-40% higher than that of traditional single-point spray devices, meeting stringent environmental emission standards, reducing the workload of subsequent dust collection equipment, and improving the overall operating efficiency of the dust removal system. The corrosion rate of flue pipe walls and related equipment can be reduced by approximately 50-60%, which not only reduces equipment maintenance costs but also extends equipment life, reduces downtime caused by equipment repair and replacement, improves production efficiency, and brings significant economic benefits to enterprises.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined spray box, comprising a shell (8), a base (11) is fixed at the bottom of the shell (8), a flue gas inlet (3) is arranged at the bottom of the side wall of the shell (8), and a flue gas outlet (1) is arranged at the top of the side wall of the shell (8), characterized in that, The middle part of the inner cavity side wall of the shell (8) is fixed with an upper layer coil pipe (12) and a lower layer coil pipe (14), the inner diameter of the upper layer coil pipe (12) is provided with a fan-shaped atomizing nozzle (13), and the inner diameter of the lower layer coil pipe (14) is provided with a conical atomizing nozzle (15); two groups of atomizing water input pipes (2) penetrate through the side wall of the shell (8) and are respectively connected with the upper layer coil pipe (12) and the lower layer coil pipe (14); the base (11) is longitudinally provided with an atomizing water bottom outlet (7), and the bottom of the side wall of the shell (8) is provided with an atomizing water side wall outlet (6).

2. A combination spray tank as claimed in claim 1 wherein, The outer periphery of the flue gas inlet (3) is fixed with an anti-overflow baffle (4), and the surface of the anti-overflow baffle (4) is provided with a bolt hole (5).

3. A combination spray tank as claimed in claim 1, wherein, The outer wall of the shell (8) is fixed with an axial reinforcing rib (9) and a radial reinforcing rib (10).

4. A combination spray tank as defined in claim 1, wherein, The water supply pressure of the upper layer coil pipe (12) and the lower layer coil pipe (14) is 0.3 MPa.

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