Converter flue gas evaporative cooler with built-in spray pipes

Abstract

The utility model discloses a converter flue gas evaporative cooler with built-in spray pipes, which comprises an evaporative cooler body and a plurality of layers of cleaning spray pipes for cleaning dust on the inner wall of the evaporative cooler body, the evaporative cooler body comprises an inlet section, a banana bent section and a middle section, the inlet section and the banana bent section are arranged up and down, the middle section is connected between the inlet section and the banana bent section, a plurality of layers of cleaning spray pipes are arranged on the upper half portion of the middle section, the cleaning spray pipes are provided with water spray holes, and the water spray directions of the water spray holes are obliquely downward. The cleaning spray pipes are arranged on the inner wall of the evaporative cooler body to correspond to the inner wall of the evaporative cooler body, so that cleaning liquid jet flow can be obliquely and downwards sprayed to the inner wall of the evaporative cooler body through the cleaning spray pipes, dust attached to the inner wall of the evaporative cooler body is effectively washed, and further scaling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of converter steelmaking, in particular to a converter fume evaporative cooler with a built-in nozzle. Background Art

[0002] The dry dust removal technology for converters has the advantages of high dust removal efficiency, good water-saving effect, high energy conversion efficiency, low operating cost, low energy consumption, small footprint and easy management and maintenance. It is expected to achieve the goal of energy-free steelmaking in converters. The evaporative cooler is the key equipment in the dry dust removal technology for converters. It mainly cools, conditions and roughly removes dust from the flue gas. Its operating condition directly affects the dust removal efficiency of the subsequent electrostatic precipitator.

[0003] When the water spray of the cooling nozzle in the evaporative cooler is uneven or the humidity of the flue gas is too high, the dust in the flue gas will stick to the water and adhere to the scaling on the inner wall of the middle section of the evaporative cooler, which will increase the outlet temperature of the evaporative cooler and affect the dust removal efficiency of the subsequent electrostatic precipitator. The dirt layer will reduce the flow area of ​​the flue gas channel in the evaporative cooler, resulting in increased flow resistance and increased energy consumption of the fan. In addition, scaling on the irregularly shaped wall will cause flue gas vortexes, reduce the smoothness and uniformity of the flue gas flow, and worsen the dust removal effect.

[0004] Although the existing evaporative cooler is provided with a descaling mechanism, if a purging method is used to reduce the scale or dirt layer on the inner wall of the evaporative cooler, the problem of incomplete descaling may occur. Utility Model Content

[0005] To this end, in order to solve the above-mentioned problem, the utility model provides a converter flue gas evaporative cooler with a built-in nozzle, which can spray a cleaning liquid jet obliquely downward to the inner wall of the evaporative cooler body through the cleaning nozzle, so as to effectively wash away the dust adhered to the inner wall of the evaporative cooler body, thereby avoiding further scaling or incomplete scaling.

[0006] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0007] The utility model provides a converter flue gas evaporative cooler with a built-in nozzle, comprising an evaporative cooler body, and also comprising a plurality of cleaning nozzles for cleaning dust on the inner wall of the evaporative cooler body; the evaporative cooler body comprises an inlet section and a banana bend section arranged at the upper and lower parts, and a middle section connected between the inlet section and the banana bend section; the plurality of cleaning nozzles are arranged at the upper half of the middle section, and the cleaning nozzles have water spray holes, and the water spraying direction of the water spray holes is arranged obliquely downward to correspond to the inner wall of the evaporative cooler body.

[0008] Furthermore, a plurality of water spray holes are formed on the outer peripheral surface of the cleaning nozzle, and the direction of the cleaning liquid jet formed by the water spray holes is obliquely downward toward the inner wall of the evaporative cooler body.

[0009] Furthermore, the diameter of the water spray hole is 3 to 8 mm.

[0010] Furthermore, the cross-sectional shape of the cleaning nozzle is circular, and its diameter is 40 to 80 mm.

[0011] Furthermore, the height of the middle section is 8 to 15 m, the height of the cleaning nozzle located on the top layer is less than the height of the middle section; the height of the cleaning nozzle located on the bottom layer is greater than one third of the height of the middle section.

[0012] Furthermore, the cleaning nozzles are arranged in 3 to 8 layers, and the height interval between two adjacent layers of cleaning nozzles is 1 to 1.5 m; the cleaning nozzles are sealed and pass through the wall of the evaporative cooler body and extend into the evaporative cooler body.

[0013] Furthermore, the middle section is provided with a water baffle for blocking the cleaning liquid from flowing toward the banana bend section, and the water baffle is close to the entrance of the banana bend section; a flue gas channel penetrating the upper and lower surfaces is provided in the middle of the water baffle; a switchable sewage outlet is provided on the outer peripheral wall of the evaporative cooler body, and the water accumulation channel formed by the water baffle is connected to the sewage outlet.

[0014] Furthermore, the side of the water baffle is provided with an inclined surface for guiding water.

[0015] Furthermore, the middle section is a cylindrical barrel.

[0016] The technical solution provided by the utility model has the following beneficial effects:

[0017] The cleaning liquid is sprayed obliquely downward from the water spray holes to the inner wall of the evaporative cooler body through the multiple layers of cleaning nozzles, so as to effectively wash away the dust adhering to the inner wall of the evaporative cooler body, thereby avoiding further scaling or incomplete scaling on the inner wall of the evaporative cooler body, so as to ensure the normal operation of the evaporative cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure shows a cross-sectional view of a converter flue gas evaporative cooler with a built-in nozzle in an embodiment;

[0019] Figure 2 Shown is the appearance of a converter flue gas evaporative cooler with a built-in nozzle in an embodiment. DETAILED DESCRIPTION

[0020] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figure 1 and Figure 2 As shown, this embodiment provides a converter flue gas evaporative cooler with a built-in nozzle (hereinafter referred to as the evaporative cooler), the evaporative cooler includes an evaporative cooler body 1, the evaporative cooler also includes a plurality of cleaning nozzles 4 for cleaning dust on the inner wall of the evaporative cooler body 1, the evaporative cooler body 1 includes an inlet section 11 and a banana bend section 13 arranged at the upper and lower parts, and a middle section 12 connected between the inlet section 11 and the banana bend section 13, the plurality of cleaning nozzles 4 are arranged in the upper half of the middle section 12, and the cleaning nozzles 4 have water spray holes, and the water spraying direction of the water spray holes is arranged to be inclined downward to correspond to the inner wall of the evaporative cooler body 1.

[0023] In the present embodiment, one end of all cleaning nozzles 4 located outside the evaporative cooler body 1 is connected to a cleaning liquid tank, the cross-sectional shape of the cleaning nozzle 4 is circular, and its diameter is 40 to 80 mm, and the wall of the evaporative cooler body 1 is provided with a mounting hole, the cleaning nozzle 4 passes through the mounting hole on the wall of the evaporative cooler body 1, and extends into the evaporative cooler body 1, and at the same time forms a sealing fit with each other, and the installation is simple and convenient.

[0024] A plurality of water spray holes are provided on the outer peripheral surface of the cleaning nozzle 4. The direction of the cleaning liquid jet formed by the water spray holes is obliquely downward toward the inner wall of the evaporative cooler body 1. The diameter of the water spray hole is 3 to 8 mm to ensure the injection pressure of the cleaning liquid jet, thereby effectively washing away the dust adhering to the inner wall of the evaporative cooler body 1.

[0025] The evaporative cooler body 1 has an atomizing nozzle 5 arranged at the inlet section 11 and a smoke outlet 3 arranged at the banana bend section 13 , and the inlet section 11 is provided with a smoke inlet 2 .

[0026] When the converter is in a blowing state, the converter flue gas enters the evaporative cooler body 1 through the flue gas inlet 2 , is then sprayed and cooled through the atomizing nozzle 5 , and then flows out of the evaporative cooler body 1 through the flue gas outlet 3 .

[0027] When the converter is not in the blowing state, the cleaning liquid is first pumped into each cleaning nozzle 4, and then passes through the water spray holes of each cleaning nozzle 4 to form a cleaning liquid jet, and then flushes obliquely downward toward the inner wall of the evaporative cooler body 1 to clean the dust on the entire inner wall of the evaporative cooler body 1.

[0028] The cleaning liquid jets are sprayed obliquely downward from the water spray holes through the multi-layer cleaning nozzles 4 to the inner wall of the evaporative cooler body 1, so as to effectively wash away the dust adhering to the inner wall of the evaporative cooler body 1, thereby avoiding further scaling or incomplete scaling on the inner wall of the evaporative cooler body 1, so as to ensure that the evaporative cooler can work normally.

[0029] In another preferred embodiment, the height of the middle section 12 of the evaporative cooler body 1 is 8 to 15 m, the height of the cleaning nozzle 4 located on the top layer is less than the height of the middle section 12, and the height of the cleaning nozzle 4 located on the bottom layer is greater than one third of the height of the middle section 12, so as to form a reasonably arranged cleaning nozzle 4 in the middle section 12.

[0030] More specifically, the number of layers of the cleaning nozzles 4 is 3 to 8, and the height interval between two adjacent layers of the cleaning nozzles 4 is 1 to 1.5 m.

[0031] By arranging the cleaning nozzles 4 of each layer in sequence from top to bottom at intervals, a sufficiently large flushing area and flushing amount of the cleaning liquid are formed to ensure the flushing or cleaning effect.

[0032] In another preferred embodiment, the middle section 12 is provided with a water baffle 6 for blocking the cleaning liquid from flowing toward the banana bend section 13, and the water baffle 6 is close to the entrance of the banana bend section 13, a flue gas channel penetrating the upper and lower surfaces is provided in the middle of the water baffle 6, and a switchable sewage outlet 7 is provided on the outer peripheral wall of the evaporative cooler body 1, and the water accumulation channel formed by the water baffle 6 is connected to the sewage outlet 7.

[0033] In this specific embodiment, the middle section 12 is a cylindrical barrel. In addition, the side shape of the water retaining plate 6 is as follows: Figure 1 As shown, the inclined surface used to guide water is also sealed with the inner wall of the evaporative cooler body 1 through the water baffle 6 to form the water accumulation channel, and it can also block the sewage formed by the cleaning liquid mixed with dust from flowing to the banana bend section 13 to avoid contaminating the banana bend section 13, and it is also convenient to discharge all sewage in a centralized manner.

[0034] When the converter is not in the blowing state, the cleaning liquid ejected from the cleaning nozzle 4 will wash away the dust and the like adhering to the inner wall of the evaporative cooler body 1, and together form sewage to flow to the water baffle 6, and then be blocked in the water accumulation channel by the water baffle 6. After the cleaning is completed and the cleaning nozzle 4 is closed, the sewage outlet 7 is opened to discharge the sewage in the water accumulation channel in a centralized manner; of course, the cleaning operation can also be performed according to actual needs and specific working conditions.

[0035] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A converter flue gas evaporative cooler with a built-in nozzle, comprising an evaporative cooler body, characterized in that: Also included are multiple layers of cleaning nozzles for cleaning dust on the inner wall of the evaporative cooler body; The evaporative cooler body comprises an inlet section and a banana bend section arranged at the upper and lower parts, and a middle section connected between the inlet section and the banana bend section; The multi-layer cleaning nozzle is arranged at the upper half of the middle section, and the cleaning nozzle has a water spray hole, and the water spray direction of the water spray hole is arranged to be inclined downward to correspond to the inner wall of the evaporative cooler body.

2. The converter flue gas evaporative cooler with a built-in nozzle according to claim 1, characterized in that: The outer peripheral surface of the cleaning nozzle is provided with a plurality of water spray holes, and the cleaning liquid jet direction formed by the water spray holes is obliquely downward toward the inner wall of the evaporative cooler body.

3. The converter flue gas evaporative cooler with a built-in nozzle according to claim 2, characterized in that: The diameter of the water spray hole is 3 to 8 mm.

4. The converter flue gas evaporative cooler with a built-in nozzle according to any one of claims 1 to 3, characterized in that: The cleaning nozzle has a circular cross-section and a diameter of 40 to 80 mm.

5. The converter flue gas evaporative cooler with a built-in nozzle according to any one of claims 1 to 3, characterized in that: The height of the middle section is 8 to 15 m, the height of the cleaning nozzle located on the top layer is less than the height of the middle section; the height of the cleaning nozzle located on the bottom layer is greater than one third of the height of the middle section.

6. The converter flue gas evaporative cooler with a built-in nozzle according to any one of claims 1 to 3, characterized in that: The cleaning nozzles are arranged in 3 to 8 layers, and the height interval between two adjacent layers of cleaning nozzles is 1 to 1.5 m; the cleaning nozzles are sealed and pass through the wall of the evaporative cooler body and extend into the evaporative cooler body.

7. The converter flue gas evaporative cooler with a built-in nozzle according to any one of claims 1 to 3, characterized in that: The middle section is provided with a water baffle for blocking the cleaning liquid from flowing toward the banana bend section, and the water baffle is close to the entrance of the banana bend section; a smoke channel penetrating the upper and lower surfaces is provided in the middle of the water baffle; The outer peripheral wall of the evaporative cooler body is provided with a drain outlet which can be switched, and the water accumulation channel formed by the water baffle is connected to the drain outlet.

8. The converter flue gas evaporative cooler with a built-in nozzle according to claim 7, characterized in that: The side of the water baffle is provided with an inclined surface for guiding water.

9. The converter flue gas evaporative cooler with a built-in nozzle according to any one of claims 1 to 3, characterized in that: The middle section is a cylindrical barrel.

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