Flue gas heat energy recovery device for garbage power plant

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a flue gas heat energy recovery device of a garbage power plant, which comprises a box body, and a flue gas inlet pipe and a flue gas outlet pipe which are connected to two sides of the box body, a plurality of diversion clapboards which are distributed at equal intervals are fixedly arranged in the box body, and staggered diversion gaps are reserved between the adjacent diversion clapboards and the inner wall of the box body. A cleaning mechanism used for scraping dust on the side wall of the flow guide partition plate is arranged on the box body, and a heat energy recycling mechanism used for recycling smoke heat is further arranged in the box body. According to the flue gas heat energy recovery device for the garbage power plant, dust adhering to the flow guide partition plate is scraped off through a scraper, the problem that the heat transfer efficiency of a pipeline is affected by dust accumulation can be avoided, the heat energy recovery efficiency is improved, a heat conduction pipe in the heat energy recovery mechanism is located in the flow guide partition plate, and the problem that the pipeline is corroded and damaged can also be avoided; and the retention time of the flue gas in the box body can be prolonged, so that the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a flue gas heat energy recovery device for a garbage power plant. Background Art

[0002] In the normal operation of garbage power plants, a large amount of flue gas will be discharged, which contains a large amount of heat energy and waste heat resources. In order to realize the recovery and utilization of flue gas heat, it is necessary to set up a flue gas heat recovery device. The recovery principle is to contact the high-temperature flue gas with the water-permeable pipe and use heat exchange to realize heat energy recovery. However, since the flue gas contains a large amount of dust, the smoke dust will adhere to the pipe during the heat exchange process, which can easily cause the pipe to be corroded and damaged. Secondly, the accumulation of dust will affect the heat transfer efficiency of the pipe, so that the heat energy transfer is hindered, resulting in reduced heat recovery efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a flue gas heat recovery device for a garbage power plant, which solves the technical problems that pipelines are easily corroded and damaged and the heat recovery efficiency is reduced.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a waste power plant flue gas heat recovery device, comprising a box body and a smoke inlet pipe and a smoke outlet pipe connected to both sides of the box body, a plurality of equally spaced guide baffles are fixedly arranged inside the box body, and staggered guide gaps are left between adjacent guide baffles and the inner wall of the box body, a cleaning mechanism for scraping dust on the side wall of the guide baffle is arranged on the box body, and a heat recovery mechanism for recycling the heat of the flue gas is also arranged inside the box body;

[0005] The cleaning mechanism includes a reciprocating drive assembly installed on the top of the box body, one end of the reciprocating drive assembly is hinged with a movable plate, a plurality of connecting rods are fixedly provided on the inner wall of the movable plate, the connecting rods penetrate into the box body and a scraper is fixedly provided at one end thereof, and the scraper slides and fits on the side wall of the guide baffle.

[0006] Preferably, the reciprocating drive assembly comprises a motor mounted on the top of the box body, a rotating block is fixedly provided on the output shaft of the motor, and the rotating block is hinged to the top of the movable plate through a connecting rod.

[0007] Preferably, both ends of the movable plate are fixedly provided with sliding sleeves, the sliding sleeves are sleeved on guide rods, and the guide rods are fixedly connected to the outer wall of the box body.

[0008] Preferably, the heat energy recovery mechanism includes a water inlet pipe and a water outlet pipe connected on both sides of the box body, a water pump and a valve are installed on the water inlet pipe, an upper diversion pipe and a lower diversion pipe are respectively embedded in the top and bottom of the guide baffle, a plurality of heat conduction pipes are connected between the upper diversion pipe and the lower diversion pipe, the upper diversion pipe and the lower diversion pipe in two adjacent guide baffles are connected through a connecting pipe, the water inlet pipe is connected to one end of the lower diversion pipe close to the smoke inlet pipe, and the water outlet pipe is connected to one end of the upper diversion pipe close to the smoke outlet pipe.

[0009] Preferably, water temperature sensors are installed on both the water inlet pipe and the water outlet pipe.

[0010] Preferably, a plurality of ash collecting boxes are plugged into the bottom of the box body, and the ash collecting boxes are located on both sides of the guide baffle.

[0011] By means of the above technical solution, the utility model provides a waste power plant flue gas heat recovery device, which has at least the following beneficial effects:

[0012] 1. The flue gas heat recovery device of the garbage power plant is provided with a cleaning mechanism, and a reciprocating drive assembly is used to drive the scraper to move. The scraper can scrape off the dust adhering to the guide baffle, thereby avoiding the problem of dust accumulation affecting the heat transfer efficiency of the pipeline and improving the heat recovery efficiency. The heat conduction pipe in the heat recovery mechanism is in the guide baffle, which can also avoid the problem of corrosion and damage to the pipeline.

[0013] 2. The flue gas heat recovery device of the garbage power plant, by setting a guide baffle, makes the movement path of the flue gas in the box longer, and then the residence time of the flue gas in the box will be longer, thereby improving the heat exchange efficiency.

[0014] 3. The flue gas heat recovery device of the garbage power plant can make water pass through each guide baffle in turn by setting up a heat recovery mechanism, so that every time the flue gas turns, it can contact both sides of the guide baffle to further improve the heat recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall front side of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the overall back side of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure inside the box of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the cleaning mechanism of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the heat energy recovery mechanism of the utility model connected with multiple guide baffles.

[0021] Reference numerals:

[0022] 1. Box body; 2. Smoke inlet pipe; 3. Smoke outlet pipe; 4. Guide baffle; 5. Cleaning mechanism; 51. Reciprocating drive assembly; 511. Motor; 512. Rotating block; 513. Connecting rod; 52. Movable plate; 53. Connecting rod; 54. Scraper; 55. Sleeve; 56. Guide rod; 6. Heat recovery mechanism; 61. Water inlet pipe; 62. Water pump; 63. Lower shunt pipe; 64. Heat conduction pipe; 65. Upper shunt pipe; 66. Connecting pipe; 67. Water outlet pipe; 68. Valve; 69. Water temperature sensor; 7. Ash collecting box. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] With the continuous development of waste treatment technology and the enhancement of environmental awareness, waste power plants have become an important facility for treating waste and converting it into energy. However, the regular operation of waste power plants will result in a large amount of flue gas emissions, which contain a large amount of heat and waste heat resources. Therefore, the design and application of flue gas heat recovery devices for waste power plants can not only help improve the energy efficiency of waste power plants, but also reduce the negative impact on the environment. By introducing flue gas heat recovery devices, the energy efficiency of waste power plants can be effectively improved, waste heat emissions can be reduced, the negative impact on the environment can be reduced, and the consumption of traditional energy resources can be saved, promoting green environmental protection and sustainable development.

[0025] Embodiment 1:

[0026] Based on the technical defect of the prior art that the heat recovery efficiency is reduced due to dust adhering to the heat pipe 64, please refer to Figure 1-Figure 5The utility model provides a waste power plant flue gas heat recovery device, which scrapes off the dust adhered to the guide baffle 4 through a scraper 54, thereby avoiding the problem of dust accumulation affecting the heat transfer efficiency of the pipeline and improving the heat recovery efficiency. The device comprises a box body 1 and a smoke inlet pipe 2 and a smoke outlet pipe 3 connected on both sides of the box body 1. A plurality of equidistantly distributed guide baffles 4 are fixedly arranged inside the box body 1, and staggered guide gaps are left between adjacent guide baffles 4 and the inner wall of the box body 1. A cleaning mechanism 5 for scraping off dust on the side walls of the guide baffle 4 is arranged on the box body 1. A heat recovery mechanism 6 for recycling the heat of the flue gas is also arranged in the box body 1; the flue gas enters the box body 1 from the smoke inlet pipe 2, and under the action of the guide baffle 4, the moving path of the flue gas becomes longer. During the flow of the flue gas, it can contact the two sides of the guide baffle 4, thereby transferring the heat to the heat recovery mechanism 6. When dust adheres to the guide baffle 4, the cleaning mechanism 5 can be used to scrape off the dust.

[0027] To scrape off the dust attached to the guide baffle 4, please refer to Figure 4 The cleaning mechanism 5 includes a reciprocating drive assembly 51 installed on the top of the box body 1, and a movable plate 52 is hinged at one end of the reciprocating drive assembly 51. A plurality of connecting rods 53 are fixedly provided on the inner wall of the movable plate 52. The connecting rods 53 penetrate into the box body 1 and are fixedly provided with a scraper 54 at one end thereof. The scraper 54 slides and fits on the side wall of the guide baffle 4. The reciprocating drive assembly 51 is used to drive the movable plate 52 to move, and the movable plate 52 drives the scraper 54 to reciprocate through the connecting rod 53. When the scraper 54 moves on the side wall of the guide baffle 4, the dust can be scraped off.

[0028] To provide power for the horizontal movement of the scraper 54, please refer to Figure 4 The reciprocating drive assembly 51 includes a motor 511 installed on the top of the box body 1, and a rotating block 512 is fixedly provided on the output shaft of the motor 511. The rotating block 512 is hinged to the top of the movable plate 52 through a connecting rod 513; the motor 511 can drive the rotating block 512 to rotate, and the rotating block 512 drives the movable plate 52 to reciprocate through the connecting rod 513, thereby causing the scraper 54 to reciprocate.

[0029] In order to improve the stability of the reciprocating movement of the movable plate 52, sliding sleeves 55 are fixed at both ends of the movable plate 52, and the sliding sleeves 55 are sleeved on the guide rods 56, and the guide rods 56 are fixed to the outer wall of the box body 1; the sliding sleeves 55 and the guide rods 56 are used to make the movable plate 52 more stable when moving.

[0030] In order to collect the scraped dust, a plurality of dust collecting boxes 7 are plugged into the bottom of the box body 1 , and the dust collecting boxes 7 are located on both sides of the guide baffle 4 ; the scraped dust can directly fall into the dust collecting boxes 7 for subsequent removal and processing.

[0031] Embodiment 2:

[0032] If the heat pipe 64 is directly in contact with the flue gas, dust will directly adhere to the heat pipe 64, causing the heat pipe 64 to be corroded and damaged. To solve this problem, please refer to Figure 5 On the basis of the first embodiment, the heat energy recovery mechanism 6 includes an inlet pipe 61 and an outlet pipe 67 connected to both sides of the box body 1, a water pump 62 and a valve 68 are installed on the inlet pipe 61, an upper shunt pipe 65 and a lower shunt pipe 63 are respectively embedded at the top and bottom of the guide baffle 4, and a plurality of heat conduction pipes 64 are connected between the upper shunt pipe 65 and the lower shunt pipe 63. The upper shunt pipes 65 and the lower shunt pipes 63 in two adjacent guide baffles 4 are connected through a connecting pipe 66, the inlet pipe 61 is connected to one end of the lower shunt pipe 63 close to the smoke inlet pipe 2, and the outlet pipe 67 is connected to one end of the upper shunt pipe 65 close to the smoke outlet pipe 3; placing the heat conduction pipe 64 in the guide baffle 4 can avoid the problem of corrosion and damage to the pipeline, and using the water pump 62 to make water enter the upper shunt pipe 65, the heat conduction pipe 64 and the lower shunt pipe 63 in the guide baffle 4 through the inlet pipe 61 to achieve heat exchange.

[0033] In order to monitor the water temperature after heat exchange, water temperature sensors 69 are installed on the water inlet pipe 61 and the water outlet pipe 67; the specific value of the heat exchange efficiency can be obtained through the water temperature data detected by the two water temperature sensors 69.

[0034] It can be known from the above embodiments that: the smoke enters into the box body 1 from the smoke inlet pipe 2, and the movement path of the smoke becomes longer under the action of the guide baffle 4. During the flow, the smoke can contact the two sides of the guide baffle 4, so as to transfer the heat to the heat energy recovery mechanism 6. The water pump 62 is used to make water enter the upper diversion pipe 65, the heat conduction pipe 64 and the lower diversion pipe 63 in the guide baffle 4 through the water inlet pipe 61 to realize the heat exchange. When dust adheres to the guide baffle 4, the motor 511 can be used to drive the rotating block 512 to rotate, and the rotating block 512 drives the movable plate 52 to reciprocate through the connecting rod 513. The movable plate 52 drives the scraper 54 to reciprocate through the connecting rod 53. When the scraper 54 moves on the side wall of the guide baffle 4, the dust can be scraped off.

[0035] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste power plant flue gas heat recovery device, comprising a housing (1) and a smoke inlet pipe (2) and a smoke outlet pipe (3) connected to both sides of the housing (1), characterized in that: The box body (1) is provided with a plurality of equally spaced guide baffles (4) inside, with staggered guide gaps between adjacent guide baffles (4) and the inner wall of the box body (1), and a cleaning mechanism (5) for scraping dust off the side walls of the guide baffles (4) is provided on the box body (1), and a heat recovery mechanism (6) for recovering and utilizing the heat of the flue gas is also provided inside the box body (1); The cleaning mechanism (5) comprises a reciprocating drive assembly (51) mounted on the top of the box body (1), one end of the reciprocating drive assembly (51) is hinged with a movable plate (52), a plurality of connecting rods (53) are fixedly arranged on the inner wall of the movable plate (52), the connecting rods (53) penetrate into the box body (1) and a scraper (54) is fixedly arranged at one end thereof, and the scraper (54) is slidably fitted on the side wall of the guide baffle (4).

2. The waste power plant flue gas heat recovery device according to claim 1 is characterized by: The reciprocating drive assembly (51) comprises a motor (511) mounted on the top of the box body (1), a rotating block (512) is fixedly arranged on the output shaft of the motor (511), and the rotating block (512) is hingedly connected to the top of the movable plate (52) through a connecting rod (513).

3. The waste power plant flue gas heat recovery device according to claim 1 is characterized by: Both ends of the movable plate (52) are fixedly provided with sliding sleeves (55), the sliding sleeves (55) are sleeved on guide rods (56), and the guide rods (56) are fixedly connected to the outer wall of the box body (1).

4. The waste power plant flue gas heat recovery device according to claim 1 is characterized by: The heat energy recovery mechanism (6) comprises a water inlet pipe (61) and a water outlet pipe (67) connected to both sides of the box body (1); a water pump (62) and a valve (68) are installed on the water inlet pipe (61); an upper diverter pipe (65) and a lower diverter pipe (63) are respectively embedded at the top and bottom of the guide baffle (4); a plurality of heat conduction pipes (64) are connected between the upper diverter pipe (65) and the lower diverter pipe (63); the upper diverter pipe (65) and the lower diverter pipe (63) in two adjacent guide baffles (4) are connected via a connecting pipe (66); the water inlet pipe (61) is connected to one end of the lower diverter pipe (63) close to the smoke inlet pipe (2); and the water outlet pipe (67) is connected to one end of the upper diverter pipe (65) close to the smoke outlet pipe (3).

5. The waste power plant flue gas heat recovery device according to claim 4 is characterized by: Water temperature sensors (69) are installed on the water inlet pipe (61) and the water outlet pipe (67).

6. The waste power plant flue gas heat recovery device according to claim 1 is characterized by: A plurality of ash collecting boxes (7) are plugged into the bottom of the box body (1), and the ash collecting boxes (7) are located on both sides of the guide baffle (4).

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