Blast furnace slag flushing water waste heat recovery equipment

Abstract

The utility model relates to the technical field of waste heat recovery, and discloses a blast furnace slag flushing water waste heat recovery device which comprises a plate heat exchanger and a filter chamber, the plate heat exchanger is provided with a water inlet and a water outlet, a water receiving opening is formed in the upper portion of the filter chamber, the lower portion of the filter chamber is communicated with the water inlet, and a sliding frame is installed in the filter chamber in a sliding mode. Two filter plates are rotatably mounted on the sliding frame, limiting mechanisms are arranged on the two filter plates, a dispersing mechanism is arranged in the filter chamber, and a residue receiving mechanism is arranged on the filter chamber. The design of the double-filter-plate system and the sliding frame allows the filter plates to be cleaned and maintained under the condition of not interrupting the operation of the system, so that the operation convenience is improved, the maintenance difficulty is reduced, the stability and the safety of the system are enhanced, and the double improvement of technical benefits and economic benefits is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recovery technical field, concretely is a blast furnace slag flushing water waste heat recovery equipment. BACKGROUND

[0002] With the increasing global attention to energy efficiency and environmental protection, the steel industry, as a major energy consumer, is also constantly seeking new ways to save energy and reduce emissions. In the steel production process, the blast furnace is one of the key production equipment, and the blast furnace slag flushing process will produce a large amount of high-temperature wastewater, which usually contains abundant waste heat resources. However, in the past, this part of waste heat has not been effectively utilized, but directly discharged into the environment, which not only wastes valuable energy resources, but also causes thermal pollution to the environment.

[0003] The patent with the current announcement number CN215887080U discloses a blast furnace water slag flushing water waste heat recovery equipment, which comprises a recovery box and a filter box. A serpentine-shaped heat exchange pipe is fixedly arranged inside the filter box. An inlet pipe is fixedly arranged at one end of the heat exchange pipe. A drain pipe is fixedly arranged at the other end of the heat exchange pipe. The filter box is fixedly installed on one side of the recovery box through a support frame. A water inlet pipe is fixedly arranged at the top of one side of the filter box. A filter assembly is arranged inside the filter box. A water outlet pipe is fixedly arranged at the bottom of the other side of the filter box.

[0004] However, the above-mentioned device has the following problems during use: when the device is used, the slag must be cleaned during use, which must interrupt the system operation, resulting in a serious decrease in the blast furnace slag flushing water waste heat recovery efficiency, which seriously limits the production continuity. In addition, the traditional filter plate is usually fixedly installed and needs to be disassembled for cleaning. The maintenance process is time-consuming and depends on manual cleaning, which is labor-intensive and has a high risk of high-temperature scalding during disassembly. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the prior art and provides a blast furnace slag flushing water waste heat recovery equipment. The design of the double-filter plate system and the sliding frame allows the filter plate to be cleaned and maintained without interrupting the system operation.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A blast furnace slag flushing water waste heat recovery equipment comprises a plate heat exchanger and a filter chamber. The plate heat exchanger is provided with a water inlet and a drain. A water inlet is arranged on the top of the filter chamber. The lower part of the filter chamber is connected with the water inlet. A sliding frame is slidably installed in the interior of the filter chamber. Two filter plates are rotatably installed on the sliding frame. Limiting mechanisms are arranged on the two filter plates. A dispersion mechanism is arranged in the interior of the filter chamber. A slag receiving mechanism is arranged on the filter chamber.

[0008] Preferably, two receiving plates are fixedly installed on the sliding frame and are adapted to the corresponding filter plates.

[0009] Preferably, the limiting mechanism comprises a limiting threaded column and a limiting internal threaded hole, the limiting threaded column is threadedly rotatably installed on the filter plate, an operating block is fixedly installed on the side of the limiting threaded column away from the limiting internal threaded hole, the limiting internal threaded hole is formed in the receiving plate, and the limiting threaded column is threadedly matched with the limiting internal threaded hole.

[0010] Preferably, the slag receiving mechanism comprises a slag receiving chamber, the slag receiving chamber is fixedly installed on the filtering chamber, the rotating shaft of the filter plate is right above the slag receiving chamber, and a slag discharging port is formed in the center of the slag receiving chamber.

[0011] Preferably, the dispersing mechanism comprises a fixed plate, the fixed plate is fixedly installed on the filtering chamber, a plurality of water outlets are equidistantly formed in the fixed plate, and a dispersing column is fixedly installed in the center of the fixed plate.

[0012] Preferably, the dispersing column is in the shape of a circular truncated cone, and the center line of the dispersing column is in the same straight line as the center of the water inlet.

[0013] Preferably, two installation plates are fixedly installed on the two sides of the sliding frame, and a handle is fixedly installed on each of the two installation plates.

[0014] Compared with the prior art, the high furnace slag flushing water waste heat recovery equipment has the following beneficial effects:

[0015] The design of the double-filter-plate system and the sliding frame in the high furnace slag flushing water waste heat recovery equipment allows the filter plates to be cleaned and maintained without interrupting the system operation, greatly improving the operation efficiency and the continuous operation ability of the system. Secondly, the dispersing mechanism effectively reduces the impact of the water flow on the filter plates, ensuring the filtering efficiency and prolonging the service life of the filter plates. The cooperation of the limiting mechanism and the operating block simplifies the adjustment process of the locking state of the filter plates, making the maintenance more convenient and efficient. In addition, the design of the slag receiving mechanism ensures the effective collection and discharge of the dregs, further improving the cleanliness and working efficiency of the system. Overall, the equipment not only optimizes the resource utilization rate, but also improves the operation convenience, reduces the maintenance difficulty, and enhances the stability and safety of the system, realizing the double improvement of technical benefits and economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A high furnace slag flushing water waste heat recovery equipment is provided in the high furnace slag flushing water waste heat recovery equipment;

[0017] Figure 2 A limiting mechanism of the high furnace slag flushing water waste heat recovery equipment is provided in the high furnace slag flushing water waste heat recovery equipment;

[0018] Figure 3 A high furnace slag flushing water waste heat recovery equipment is provided in the high furnace slag flushing water waste heat recovery equipment Figure 3Enlarged view at A;

[0019] Figure 4 A structure diagram of a blast furnace slag flushing water waste heat recovery equipment dispersion mechanism is provided in the utility model.

[0020] In the figure: 1, plate heat exchanger; 2, filter chamber; 3, water inlet; 4, water receiving port; 5, slag receiving chamber; 6, slag discharge port; 7, mounting plate; 8, handle; 9, sliding frame; 10, receiving plate; 11, filter plate; 12, limiting threaded column; 13, limiting internal threaded hole; 14, fixed plate; 15, dispersion column; 16, water outlet; 17, drain port; 18, operating block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Please refer to Figures 1 to 4 A blast furnace slag flushing water waste heat recovery equipment includes a plate heat exchanger 1 and a filter chamber 2, which are two main components of the equipment and are used for heat exchange and preliminary treatment of slag flushing water respectively.

[0023] As a preferred, an additional support device can be added to the filter chamber 2 to ensure stable placement of the filter chamber 2.

[0024] The plate heat exchanger 1 is provided with a water inlet 3 and a drain port 17, and these interfaces are used to guide the hot water to be treated into and out of the treated water, to ensure that the water flow can smoothly enter and exit the plate heat exchanger 1, and to realize heat exchange activity. Since this part is prior art, it will not be described here.

[0025] The filter chamber 2 is provided with a water receiving port 4 at the top, and the lower part of the filter chamber 2 is connected with the water inlet 3. The water receiving port 4 receives the slag flushing water from the blast furnace, and the filtered water flow can directly flow into the plate heat exchanger 1 through the water inlet 3 for heat recovery.

[0026] The sliding frame 9 is slidably installed in the filter chamber 2, and two filter plates 11 are rotatably installed on the sliding frame 9. By moving the sliding frame 9, different filter plates 11 can be matched with the filter chamber 2, thereby facilitating subsequent cleaning activities.

[0027] The two filter plates 11 are provided with limiting mechanisms, the filter chamber 2 is provided with a dispersion mechanism, and the filter chamber 2 is provided with a slag receiving mechanism.

[0028] Two filter plates 11 can be individually matched with the filter chamber 2 to realize cleaning without stopping, which means that one of the filter plates 11 can continue to work while the other filter plate 11 is being cleaned, greatly improving the operating efficiency of the system and avoiding production interruption caused by maintenance.

[0029] As preferred, a sealing gasket can be embedded on the groove body on the filter chamber 2 matched with the sliding frame 9, so as to avoid leakage of hot gas from the gap.

[0030] Two receiving plates 10 are fixedly installed on the sliding frame 9, and the receiving plates 10 are matched with the corresponding filter plates 11, which provide support for the filter plates 11 and ensure that they can be stably placed and rotated.

[0031] The limiting mechanism includes a limiting threaded column 12 and a limiting internal threaded hole 13, the limiting threaded column 12 is threadedly rotatably installed on the filter plate 11, an operating block 18 is fixedly installed on the side of the limiting threaded column 12 away from the limiting internal threaded hole 13, the limiting internal threaded hole 13 is opened on the receiving plate 10, and the limiting threaded column 12 is threadedly matched with the limiting internal threaded hole 13.

[0032] By rotating the operating block 18, the operator can quickly adjust the locking state of the filter plate 11, simplifying the maintenance process.

[0033] The slag receiving mechanism includes a slag receiving chamber 5, which is fixedly installed on the filter chamber 2, the rotating shaft of the filter plate 11 is directly above the slag receiving chamber 5, and a slag discharge port 6 is opened at the center position of the slag receiving chamber 5.

[0034] By rotating the filter plate 11, the slag on the filter plate 11 can be swept off using a brush, and the slag can directly fall into the slag receiving chamber 5. When the slag in the slag receiving chamber 5 accumulates to a certain degree, the slag in the slag receiving chamber 5 can be moved by the brush, so that the slag is discharged through the slag discharge port 6.

[0035] The dispersion mechanism includes a fixed plate 14, which is fixedly installed on the filter chamber 2, and a dispersion column 15 is fixedly installed at the center position of the fixed plate 14, and a water outlet 16 is equidistantly opened on the fixed plate 14.

[0036] The dispersion mechanism helps to uniformly distribute the water flow, reduces the impact of the water flow on the filter plate 11, and ensures the service life of the filter plate 11, and on the other hand, can avoid the water flow always impacting a certain point on the filter plate 11, causing uneven slag bearing effect of the filter plate 11.

[0037] The dispersion column 15 is in the shape of a circular truncated cone, and the center line of the dispersion column 15 and the center of the water inlet 4 are on the same straight line, which optimizes the water flow path and enhances the overall filtering effect.

[0038] The two sides of the sliding frame 9 are fixedly provided with mounting plates 7, and the two mounting plates 7 are fixedly provided with handles 8, so that the operator can easily move the sliding frame 9 by holding the handles 8, and the replacement and maintenance of the filter plate 11 are more convenient.

[0039] The working process of the utility model is as follows: the slag washing water from the blast furnace enters the filter chamber 2 through the water inlet 4. The slag washing water first passes through the dispersion mechanism, and the water flow impacts on the dispersion column 15 in the shape of a circular truncated cone, and then uniformly falls from the water outlets 16 equidistantly arranged on the fixed plate 14. Such a design can reduce the impact of the water flow on the filter plate 11, ensure the service life of the filter plate 11, and avoid the water flow always impacting a certain point on the filter plate 11, thereby causing uneven slag carrying effect of the filter plate 11.

[0040] The uniformly falling slag washing water is filtered by the filter plate 11, and the filter plate 11 intercepts the dregs in the slag washing water. The sliding frame 9 is slidingly arranged in the filter chamber 2, and the two filter plates 11 are rotatably arranged on the sliding frame 9. The two filter plates 11 can independently work with the filter chamber 2. When the dregs on one of the filter plates 11 accumulate to a certain degree and need to be cleaned, the operator moves the sliding frame 9 by holding the handle 8 on the mounting plate 7, so that the other clean filter plate 11 enters the working position, and the cleaning is realized without stopping the machine.

[0041] The filter plate 11 that needs to be cleaned is rotated to be directly above the slag receiving chamber 5, and the operator uses a brush to sweep the dregs on the front and back surfaces of the filter plate 11, so that the dregs directly fall into the slag receiving chamber 5. When the dregs in the slag receiving chamber 5 accumulate to a certain degree, the brush is used again to move the dregs in the slag receiving chamber 5, so that the dregs are discharged through the slag discharge port 6.

[0042] The filtered slag washing water flows into the plate heat exchanger 1 through the water inlet 3 below the filter chamber 2 and the plate heat exchanger 1, exchanges heat in the plate heat exchanger 1, realizes waste heat recovery, and the water after the waste heat recovery is discharged through the water outlet 17.

[0043] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A blast furnace slag flushing water waste heat recovery equipment, comprising a plate heat exchanger (1) and a filter chamber (2), a water inlet (3) and a water outlet (17) are arranged on the plate heat exchanger (1), characterized in that, The water receiving port (4) is installed above the filtering chamber (2), the water inlet (3) is communicated with the lower part of the filtering chamber (2), the sliding frame (9) is slidably installed in the filtering chamber (2), the two filter plates (11) are rotatably installed on the sliding frame (9), the limiting mechanisms are arranged on the two filter plates (11), the dispersing mechanism is arranged in the filtering chamber (2), and the slag receiving mechanism is arranged on the filtering chamber (2).

2. The blast furnace slag flushing water residual heat recovery equipment according to claim 1, characterized in that, The two bearing plates (10) are fixedly installed on the sliding frame (9) and are matched with the corresponding filter plates (11).

3. The high-temperature water heat recovery device for a slag tap of a blast furnace according to claim 2, characterized in that, The limiting mechanism comprises a limiting threaded column (12) and a limiting internal threaded hole (13), the limiting threaded column (12) is rotatably installed on the filter plate (11) through threads, the operating block (18) is fixedly installed on the side, away from the limiting internal threaded hole (13), of the limiting threaded column (12), the limiting internal threaded hole (13) is formed in the bearing plate (10), and the limiting threaded column (12) is in threaded cooperation with the limiting internal threaded hole (13).

4. The high-temperature water heat recovery device according to claim 1, wherein The slag receiving mechanism comprises a slag receiving chamber (5), the slag receiving chamber (5) is fixedly installed on the filtering chamber (2), the rotating shafts of the two filter plates (11) are located above the slag receiving chamber (5), and the slag receiving chamber (5) is provided with the slag discharging port (6) at the center position.

5. The high-temperature water heat recovery device according to claim 1, wherein The dispersing mechanism comprises a fixed plate (14), the fixed plate (14) is fixedly installed on the filtering chamber (2), the water outlet (16) is equidistantly formed in the fixed plate (14), and the dispersing column (15) is fixedly installed at the center position of the fixed plate (14).

6. The high-temperature water heat recovery device according to claim 5, wherein The dispersing column (15) is in the shape of a circular truncated cone, the center line of the dispersing column (15) is located on the same line as the center of the water receiving port (4).

7. The high-temperature water heat recovery device according to claim 1, wherein The two installation plates (7) are fixedly installed on the two sides of the sliding frame (9), and the handle (8) is fixedly installed on the two installation plates (7).

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