Coal chemical industry flue gas waste heat recovery mechanism

Abstract

The utility model relates to the field of coal chemical industry, and discloses a coal chemical industry flue gas waste heat recovery mechanism which comprises a base, the upper surface of the base is fixedly connected with a heat exchange box, the upper surface of the heat exchange box penetrates through and is fixedly connected with a gas inlet pipe, and a communicating water pipe is arranged in the heat exchange box; the bottom end of the left surface of the heat exchange box penetrates through and is fixedly connected with an air outlet pipe, the upper surface of the base is fixedly connected with a filter box, a sealing assembly is arranged on the upper surface of the filter box, an indicating assembly is arranged in the filter box, a filter assembly is arranged on the upper surface of the base, and the sealing assembly comprises a sealing cover. According to the utility model, through the arrangement of the sealing assembly, the sealing performance of the device can be ensured, smoke leakage can be prevented, and under the cooperation of the sealing assembly and the indication assembly, a worker can intuitively judge whether the filter screen needs to be replaced or not from the outside, so that the uncertainty is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of coal chemical industry, in particular to a waste heat recovery mechanism for coal chemical flue gas. Background Technique

[0002] In the process of coal chemical production, a large amount of high-temperature flue gas is generated. The flue gas contains rich heat energy. If it is directly discharged into the atmosphere, it will not only cause huge waste of energy, but also have an adverse impact on the environment. With the increasingly severe energy shortage problem and the continuous improvement of environmental protection requirements, it is crucial to recover and utilize the waste heat of coal chemical flue gas.

[0003] After retrieval, the Chinese patent publication number: CN221259598U discloses a waste heat recovery mechanism for coal chemical flue gas, including a bottom plate. A filtering component is arranged above the bottom plate. The filtering component includes a filtering box fixedly installed on the top of the bottom plate. The top of the filtering box is slidably connected with a top plate penetrating into its interior at one end. The bottom of the top plate is fixedly installed with a mounting block. An installation groove is opened at the bottom of the mounting block. A filter plate is slidably connected inside the installation groove. Guide components are arranged on the front and back of the filter plate. This waste heat recovery mechanism for coal chemical flue gas can filter the coal chemical flue gas by setting the filtering component. After the filtering is completed, the filter plate can be quickly taken out from the inside of the filtering box for cleaning. At the same time, when installing the filter plate, its installation stability can be ensured. In addition, the filter plate can be quickly replaced through the filtering component, so as to ensure the filtering efficiency of the flue gas.

[0004] Although this device has certain improvements, during the use process, the staff cannot judge from the outside when the filter screen needs to be replaced. The staff often can only rely on experience or regular inspection to determine whether the filter screen needs to be replaced. This uncertainty brings many inconveniences to production. For this reason, a waste heat recovery mechanism for coal chemical flue gas is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a waste heat recovery mechanism for coal chemical flue gas, aiming to improve the problem that in the prior art, the staff cannot judge from the outside when the filter screen needs to be replaced, thus bringing many inconveniences to production.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A waste heat recovery mechanism for coal chemical flue gas, including a base, on the upper surface of the base is fixedly connected with a heat exchange box, through and fixedly connected to the upper surface of the heat exchange box is an air inlet pipe, inside the heat exchange box is provided with a communicating water pipe, through and fixedly connected to the bottom end of the left surface of the heat exchange box is an air outlet pipe, on the upper surface of the base is fixedly connected with a filter box, on the upper surface of the filter box is provided with a sealing component, inside the filter box is provided with an indicating component, on the upper surface of the base is provided with a filtering component. The sealing component includes a sealing cover, fixedly connected to the lower surface of the sealing cover is a sealing gasket, and the inner wall of the filter box is elastically connected with a sealing ring through a compression spring.

[0007] As a further description of the above technical solution:

[0008] The indicating component includes a filter plate, the inner wall of the filter box is elastically connected with a moving plate through a connecting spring, and fixedly connected to the upper surface of the moving plate is an indicating rod.

[0009] As a further description of the above technical solution:

[0010] The filtering component includes a filtering barrel, through and fixedly connected to the left surface of the filter box is an air delivery pipe, in the middle section of the air delivery pipe is provided with a check valve, through and fixedly connected to the upper surface of the filtering barrel is an exhaust pipe, through and fixedly connected to the left surface of the filtering barrel is a drain pipe, and in the middle section of the drain pipe is provided with a valve.

[0011] As a further description of the above technical solution:

[0012] One end of the communicating water pipe is through and fixedly connected to the bottom end of the front surface of the heat exchange box, the other end of the communicating water pipe is through and fixedly connected to the top end of the rear surface of the heat exchange box, the communicating water pipe is arranged in a spiral shape, and the air outlet pipe is through and fixedly connected to the right surface of the filter box.

[0013] As a further description of the above technical solution:

[0014] Fixedly connected to the upper surface of the sealing cover is a handle, the sealing cover is inserted into the upper surface of the filter box, one end of the compression spring is fixedly connected to the lower surface of the sealing ring, the other end of the compression spring is fixedly connected to the inner wall of the bottom end of the filter box, and the sealing ring is slidably connected to the inner wall of the filter box.

[0015] As a further description of the above technical solution:

[0016] The filter plate is fixedly connected to the lower surface of the sealing cover, the front surface and the rear surface of the filter plate are in contact with the inner wall of the filter box, and the lower surface of the filter plate is in contact with the upper surface of the moving plate.

[0017] As a further description of the above technical solution:

[0018] The movable plate is slidably connected to the inner wall of the filter box. One end of the connecting spring is fixedly connected to the lower surface of the movable plate, and the other end of the connecting spring is fixedly connected to the inner wall of the bottom end of the filter box. The indicating rod penetrates and is slidably connected to the upper surface of the filter box.

[0019] As a further description of the above technical solution:

[0020] The filter barrel is fixedly connected to the upper surface of the base. The filter barrel is located on the left side of the filter box, the filter box is located on the left side of the heat exchange box, and the air delivery pipe penetrates and is fixedly connected to the right surface of the filter barrel.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the setting of the sealing component, the airtightness of the device can be ensured, and the leakage of flue gas can be prevented. And with the cooperation of the sealing component and the indicating component, the staff can visually judge whether the filter screen needs to be replaced from the outside, reducing uncertainty and improving production efficiency.

[0023] 2. In the utility model, through the cooperation of the filter screen and the filtering component, the coal chemical flue gas can be filtered in multiple layers, effectively removing impurities and particulate matters in the flue gas, reducing pollutants and reducing the adverse impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0025] Figure 2 It is a schematic diagram of the sectional three-dimensional structure of the heat exchange box in the utility model;

[0026] Figure 3 It is a schematic diagram of the sectional three-dimensional structure of the filter box and the filter barrel in the utility model;

[0027] Figure 4 In the utility model Figure 3 The enlarged schematic diagram of the three-dimensional structure of part A;

[0028] Figure 5 It is a schematic diagram of the sectional three-dimensional structure split of the filter box and the filter plate in the utility model.

[0029] LEGEND DESCRIPTION:

[0030] 1. Base; 2. Heat exchange box; 3. Intake pipe; 4. Connecting water pipe; 5. Exhaust pipe; 6. Filter box; 71. Sealing cover; 72. Sealing gasket; 73. Sealing ring; 74. Compression spring; 81. Filter plate; 82. Movable plate; 83. Connecting spring; 84. Indicator rod; 91. Gas transmission pipe; 92. Check valve; 93. Filter barrel; 94. Drain pipe; 95. Valve; 96. Exhaust pipe. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Refer to Figure 1 - Figure 3 , an embodiment provided by the present invention: A waste heat recovery mechanism for coal chemical industry flue gas includes a base 1 for supporting the overall device. The upper surface of the base 1 is fixedly connected with a heat exchange box 2. The upper surface of the heat exchange box 2 penetrates and is fixedly connected with an intake pipe 3. Coal chemical industry flue gas can be discharged into the heat exchange box 2 from the intake pipe 3. A connecting water pipe 4 is arranged inside the heat exchange box 2. The coal chemical industry flue gas has relatively high heat, and the heat can heat the water in the connecting water pipe 4, which can avoid heat loss and achieve the effect of waste heat recovery. The bottom end of the left surface of the heat exchange box 2 penetrates and is fixedly connected with an exhaust pipe 5. The used coal chemical industry flue gas will be discharged from the exhaust pipe 5. The upper surface of the base 1 is fixedly connected with a filter box 6. The coal chemical industry flue gas will enter the filter box 6 through the exhaust pipe 5. A sealing component is arranged on the upper surface of the filter box 6, and the sealing component can maintain the seal. An indicating component is arranged inside the filter box 6, and the indicating component is convenient for the staff to observe whether the filter plate 81 needs to be replaced. A filtering component is arranged on the upper surface of the base 1, and the filtering component can further filter the coal chemical industry flue gas to avoid the discharge of coal chemical industry flue gas containing a small amount of harmful substances and polluting the environment.

[0033] Refer to Figure 1 、 Figure 3 、 Figure 4 , the sealing component includes a sealing cover 71. The lower surface of the sealing cover 71 is fixedly connected with a sealing gasket 72. The edge of the sealing gasket 72 and the edge of the sealing cover 71 are on the same vertical line. The sealing gasket 72 is made of rubber. The inner wall of the filter box 6 is elastically connected with a sealing ring 73 through a compression spring 74. The sealing ring 73 is also made of rubber. Under the influence of gravity, the sealing cover 71 will drive the sealing gasket 72 to squeeze the sealing ring 73 downward. If it is used in a scenario with high stability requirements, the sealing cover 71 can be fixed on the filter box 6 using a mother and son lock.

[0034] Refer to Figure 1 、 Figure 3 、 Figure 5 , the indicating component includes a filter plate 81. A filter screen is installed on the left surface of the filter plate 81 through screws. The filter screen can be disassembled and replaced. The inner wall of the filter box 6 is elastically connected with a moving plate 82 through a connecting spring 83. An indicating rod 84 is fixedly connected to the upper surface of the moving plate 82. The top end of the indicating rod 84 protrudes from the upper surface of the filter box 6.

[0035] Refer to Figure 1 - Figure 3 , the filtering component includes a filtering barrel 93. Water is contained in the filtering barrel 93. The left surface of the filter box 6 penetrates and is fixedly connected with an air delivery pipe 91. A one-way valve 92 is arranged in the middle section of the air delivery pipe 91. The one-way valve 92 is a prior art and can be realized by those skilled in the art. Since it is a prior art, it will not be described in detail in this case. The one-way valve 92 can only allow the gas in the filter box 6 to flow into the filtering barrel 93. The upper surface of the filtering barrel 93 penetrates and is fixedly connected with an exhaust pipe 96. The coal chemical industry flue gas will be discharged from the exhaust pipe 96 after passing through the water in the filtering barrel 93, and water can also be added from the exhaust pipe 96. The left surface of the filtering barrel 93 penetrates and is fixedly connected with a drain pipe 94. A valve 95 is arranged in the middle section of the drain pipe 94. The valve 95 can control the opening and closing of the drain pipe 94.

[0036] ' Refer to Figure 1 - Figure 3 , one end of the connecting water pipe 4 penetrates and is fixedly connected to the bottom end of the front surface of the heat exchange box 2, and the other end of the connecting water pipe 4 penetrates and is fixedly connected to the top end of the rear surface of the heat exchange box 2. The connecting water pipe 4 is arranged in a spiral shape, which can increase the contact area with the coal chemical industry flue gas and ensure the heating effect of the water in the connecting water pipe 4. The air outlet pipe 5 penetrates and is fixedly connected to the right surface of the filter box 6.

[0037] Refer to Figure 1 、 Figure 3 、 Figure 4 , a handle is fixedly connected to the upper surface of the sealing cover 71 for convenient grasping. The sealing cover 71 is inserted into the upper surface of the filter box 6. When the insertion is completed, under the influence of gravity and the reaction force of the compression spring 74, the upper surface of the sealing cover 71 is flush with the upper surface of the filter box 6. One end of the compression spring 74 is fixedly connected to the lower surface of the sealing ring 73, and the other end of the compression spring 74 is fixedly connected to the inner wall of the bottom end of the filter box 6. The sealing ring 73 is slidably connected to the inner wall of the filter box 6. The outer wall of the sealing ring 73 is in contact with the inner wall of the filter box 6. When the sealing ring 73 moves downward, it will squeeze the compression spring 74 to generate a reaction force.

[0038] Refer to Figure 1 、 Figure 3 、 Figure 5, the filter plate 81 is fixedly connected to the lower surface of the sealing cover 71. If the sealing cover 71 is fixed using a mother-daughter lock, the filter plate 81 penetrates and is slidably connected to the lower surface of the sealing cover 71 and slides longitudinally. The front surface and the rear surface of the filter plate 81 are in contact with the inner wall of the filter box 6, and the lower surface of the filter plate 81 is in contact with the upper surface of the moving plate 82, which can maintain the seal. The moving plate 82 is slidably connected to the inner wall of the filter box 6 and slides longitudinally. One end of the connecting spring 83 is fixedly connected to the lower surface of the moving plate 82, and the other end of the connecting spring 83 is fixedly connected to the inner wall of the bottom end of the filter box 6. When the moving plate 82 moves downward, it will squeeze the connecting spring 83 to generate a reaction force. The indicating rod 84 penetrates and is slidably connected to the upper surface of the filter box 6 and slides longitudinally. The indicating rod 84 will move along with the moving plate 82. When the indicating rod 84 moves downward, it will gradually retract into the filter box 6, which can be visually seen by the user from the outside.

[0039] Refer to Figure 1 - Figure 3 , the filter barrel 93 is fixedly connected to the upper surface of the base 1. The filter barrel 93 is located on the left side of the filter box 6, and the filter box 6 is located on the left side of the heat exchange box 2. The air delivery pipe 91 penetrates and is fixedly connected to the right surface of the filter barrel 93.

[0040] Working principle: When this device is in use, first add water to the filter barrel 93 from the exhaust pipe 96. After adding water, inject the coal chemical industry flue gas from the air inlet pipe 3 and inject the water to be heated from the connecting water pipe 4. After the coal chemical industry flue gas enters the heat exchange box 2, it will wrap the connecting water pipe 4, and the water will flow through the connecting water pipe 4. Since the temperature of the coal chemical industry flue gas is relatively high, it can heat the water, achieving the effect of waste heat recovery. Further, the coal chemical industry flue gas will enter the filter box 6 from the air outlet pipe 5. When the coal chemical industry flue gas passes through the filter plate 81, it can be preliminarily filtered, and most of the dust and impurities contained in the coal chemical industry flue gas will accumulate on the filter mesh.

[0041] The coal chemical industry flue gas passing through the filter plate 81 will continue to move leftward through the air delivery pipe 91 into the filter barrel 93 and pass through the water in the filter barrel 93. The water can further filter the coal chemical industry flue gas, and finally the purified coal chemical industry flue gas will be discharged from the exhaust pipe 96.

[0042] After the filtration is completed, open the valve 95 to discharge the sewage in the filter barrel 93. After the dust and impurities accumulate on the filter mesh, the weight of the filter mesh will increase. When the total weight of the filter plate 81, the sealing cover 71, and the filter mesh is greater than the sum of the elastic coefficients of the compression spring 74 and the connecting spring 83, the filter mesh, the filter plate 81, and the sealing cover 71 will move downward. The downward moving filter plate 81 will press down the moving plate 82, thereby driving the indicating rod 84 to move downward. The staff can visually judge the accumulation situation of the dust and impurities on the filter mesh from the outside, which is convenient for work and easy to judge whether the filter mesh needs to be replaced.

[0043] When replacing the filter screen, directly grasp the handle and pull the sealing cover 71 and the filter plate 81 upward. After the filter plate 81 is pulled out, use a screwdriver to remove the screw for fixing the filter screen, then clean the filter screen, and then fix the clean filter screen on the filter plate 81 with bolts. Then align the sealing cover 71 and the filter plate 81 with the filter tank 6 and insert them. When the insertion is completed, under the influence of gravity, the sealing gasket 72 will fit with the sealing ring 73 to maintain the seal, and the outer wall of the filter plate 81 will also fit with the inner wall of the filter tank 6 and the upper surface of the moving plate 82 to maintain the seal.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A coal chemical flue gas waste heat recovery mechanism, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a heat exchange box (2), the upper surface of the heat exchange box (2) is penetrated and fixedly connected to an air inlet pipe (3), the interior of the heat exchange box (2) is provided with a connecting water pipe (4), the bottom end of the left surface of the heat exchange box (2) is penetrated and fixedly connected to an air outlet pipe (5), the upper surface of the base (1) is fixedly connected to a filter box (6), the upper surface of the filter box (6) is provided with a sealing assembly, the interior of the filter box (6) is provided with an indicator assembly, the upper surface of the base (1) is provided with a filter assembly, the sealing assembly includes a sealing cover (71), the lower surface of the sealing cover (71) is fixedly connected to a sealing gasket (72), and the inner wall of the filter box (6) is elastically connected to a sealing ring (73) via a compression spring (74).

2. A coal chemical flue gas waste heat recovery mechanism according to claim 1, characterized in that: The indicating assembly comprises a filter plate (81), the inner wall of the filter box (6) is elastically connected to a movable plate (82) via a connecting spring (83), and the upper surface of the movable plate (82) is fixedly connected to an indicating rod (84).

3. The coal chemical flue gas waste heat recovery mechanism according to claim 1, characterized in that: The filter assembly comprises a filter barrel (93), an air supply pipe (91) is passed through and fixedly connected to the left surface of the filter box (6), a one-way valve (92) is provided in the middle section of the air supply pipe (91), an exhaust pipe (96) is passed through and fixedly connected to the upper surface of the filter barrel (93), a drain pipe (94) is passed through and fixedly connected to the left surface of the filter barrel (93), and a valve (95) is provided in the middle section of the drain pipe (94).

4. The coal chemical flue gas waste heat recovery mechanism according to claim 1, characterized in that: One end of the communicating water pipe (4) passes through and is fixedly connected to the bottom end of the front surface of the heat exchange box (2), and the other end of the communicating water pipe (4) passes through and is fixedly connected to the top end of the rear surface of the heat exchange box (2). The communicating water pipe (4) is arranged in a spiral shape, and the air outlet pipe (5) passes through and is fixedly connected to the right surface of the filter box (6).

5. The coal chemical flue gas waste heat recovery mechanism according to claim 1, characterized in that: The upper surface of the sealing cover (71) is fixedly connected to a handle, the sealing cover (71) is plugged into the upper surface of the filter box (6), one end of the compression spring (74) is fixedly connected to the lower surface of the sealing ring (73), the other end of the compression spring (74) is fixedly connected to the inner wall of the bottom end of the filter box (6), and the sealing ring (73) is slidably connected to the inner wall of the filter box (6).

6. The coal chemical flue gas waste heat recovery mechanism according to claim 2, characterized in that: The filter plate (81) is fixedly connected to the lower surface of the sealing cover (71), the front surface and the rear surface of the filter plate (81) are in contact with the inner wall of the filter box (6), and the lower surface of the filter plate (81) is in contact with the upper surface of the movable plate (82).

7. The coal chemical flue gas waste heat recovery mechanism according to claim 2, characterized in that: The movable plate (82) is slidably connected to the inner wall of the filter box (6), one end of the connecting spring (83) is fixedly connected to the lower surface of the movable plate (82), and the other end of the connecting spring (83) is fixedly connected to the inner wall of the bottom end of the filter box (6), and the indicating rod (84) passes through and is slidably connected to the upper surface of the filter box (6).

8. The coal chemical flue gas waste heat recovery mechanism according to claim 3, characterized in that: The filter barrel (93) is fixedly connected to the upper surface of the base (1), the filter barrel (93) is located on the left side of the filter box (6), the filter box (6) is located on the left side of the heat exchange box (2), and the gas pipe (91) passes through and is fixedly connected to the right surface of the filter barrel (93).

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