Solid waste combustion flue gas waste heat recycling device

Abstract

The utility model relates to the technical field of solid waste combustion flue gas waste heat utilization, in particular to a solid waste combustion flue gas waste heat recycling device which comprises a recycling box, and a purification flow blocking assembly is arranged in the recycling box. The purifying and flow blocking assembly comprises a purifying and flow blocking pipe fixedly mounted at the bottom end in the recycling box, a spiral flow blocking piece is slidably mounted in the purifying and flow blocking pipe, and a second filtering layer is fixedly mounted at the upper end of the spiral flow blocking piece; and a flue gas heat energy transfer pipe mutually communicating with the interior of the purification choke pipe is fixedly mounted in the cyclic utilization box. According to the utility model, the designed purification and flow choking assembly is completely positioned in the cyclic utilization box, so that the flue gas purification process can be carried out in the cyclic utilization box, water in the cyclic utilization box can absorb the flue gas waste heat in the purification process, and the situation that the conversion efficiency is reduced due to the loss of the flue gas waste heat is avoided; and waste heat in the flue gas cannot be fully converted into available energy.

Description

Technical Field

[0001] The utility model relates to the technical field of solid waste combustion flue gas waste heat utilization, in particular to a solid waste combustion flue gas waste heat recycling device. Background Art

[0002] Through a series of heat exchange and energy conversion processes, the solid waste combustion flue gas waste heat recycling device captures the heat energy in the high-temperature flue gas and converts it into steam, hot water, or other forms of thermal energy carriers, which can then be used for various purposes such as power generation, heating, and cooling. This device not only improves energy utilization efficiency but also reduces environmental pollution, meeting the requirements of sustainable development.

[0003] During solid waste incineration, the waste undergoes chemical reactions such as pyrolysis and combustion at high temperatures, producing large amounts of flue gas and ash. Before the flue gas enters the waste heat recovery unit, a purification device should be installed to remove harmful substances such as particulate matter and acidic gases. This not only protects the waste heat recovery equipment from corrosion and blockage, but also reduces environmental pollution.

[0004] After searching, the boiler exhaust gas waste heat recycling device with application number 202221323269.X is found. When working, the side of the cylinder rack is connected to the air inlet pipe, and the other side of the cylinder rack is connected to the air pipe on the side of the water tank. The two adjacent sets of air pipes are connected by a conduit. In this way, one end of the air inlet pipe is connected to the boiler outlet pipe, and the boiler exhaust gas can be input into the air pipe and conduit in the water tank, so that the water in the water tank can be heated to ensure the reuse of the boiler exhaust gas.

[0005] In the existing technical solution, before the flue gas enters the waste heat recovery device, a purification device is added to remove particulate matter in the solid waste combustion flue gas. However, the purification process of the purification device is not carried out in the waste heat recovery device, which will cause a large amount of heat in the waste heat of the combustion flue gas to be lost during the purification process, thereby affecting the waste heat recovery effect, reducing the conversion efficiency, and failing to fully convert the waste heat in the flue gas into usable energy. Summary of the Invention

[0006] The purpose of this utility model is to provide a device for recycling the waste heat of flue gas from solid waste combustion. The designed purification and flow-blocking components are completely located inside the recycling box, so that the flue gas purification process can be carried out inside the recycling box. In this way, the water in the recycling box can absorb the waste heat of the flue gas during the purification process, avoiding the loss of the waste heat of the flue gas and reducing the conversion efficiency, and the inability to fully convert the waste heat in the flue gas into usable energy, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a solid waste combustion flue gas waste heat recycling device, comprising a recycling box, wherein a purification and flow-blocking component is provided inside the recycling box;

[0008] The purification choke assembly includes a purification choke tube fixedly mounted at the bottom end of the recycling box, a spiral choke plate slidably mounted inside the purification choke tube, and a second filter layer fixedly mounted on the upper end of the spiral choke plate;

[0009] A flue gas heat energy transfer pipe communicating with the interior of the purification choke tube is fixedly installed inside the recycling box, and a flue gas conveying pipe communicating with the interior of the purification choke tube is fixedly installed at the bottom end of the recycling box.

[0010] Preferably, a water injection valve pipe and a steam exhaust pipe are fixedly installed on the top of the recycling box. The steam exhaust pipe is located behind the water injection valve pipe. The water injection valve pipe, the steam exhaust pipe and the recycling box are interconnected.

[0011] Preferably, the purification choke assembly further comprises an assembly transverse plate fixed to the bottom end of the inner side wall of the purification choke tube, a limit spring is fixedly mounted on the upper end surface of the assembly transverse plate, and the limit spring is fixedly connected to the spiral choke.

[0012] Preferably, the outer edge of the spiral baffle is in contact with the inner wall of the purification baffle tube, and a plurality of auxiliary filter holes are provided inside the spiral baffle.

[0013] Preferably, a plurality of fastening bolts are fixedly installed between the top end of the flue gas conveying pipe and the bottom end surface of the recycling box, the flue gas output end of the flue gas conveying pipe is tightly fitted with the flue gas inlet end of the purification choke tube, and a first filter layer is detachably installed inside the top end of the flue gas conveying pipe.

[0014] Preferably, a heat energy utilization component is provided inside the recycling box, and the heat energy utilization component includes two assembly seats fixedly installed on the top end surface inside the recycling box.

[0015] Preferably, a pulley is rotatably mounted in the middle of the assembly seat, and a rotating shaft is connected between the pulley and the assembly seat.

[0016] Preferably, a rope is slidably arranged in the wheel groove of the pulley, a counterweight floating plate is fixedly installed at the front end of the rope, the end of the rope away from the counterweight floating plate is fixedly connected to the second filter layer, and the rope is slidably and sealedly connected to the top of the purification choke tube.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The purification flow-blocking component designed in the utility model is completely located inside the recycling box, so that the flue gas purification process can be carried out inside the recycling box. In this way, the water in the recycling box can absorb the flue gas waste heat during the purification process, avoiding the problem of the waste heat of the flue gas being lost and reducing the conversion efficiency, and failing to fully convert the waste heat in the flue gas into usable energy. At the same time, the absorption of the waste heat of the flue gas by the water in the recycling box can reduce the flue gas temperature during the flue gas purification process. When the flue gas temperature is reduced, the thermal motion of the particulate matter is weakened, reducing the possibility of resuspension, making the filtration process more stable and effective;

[0019] 2. The spiral baffle and the second filter layer provided in the utility model can move and vibrate, thereby achieving a self-cleaning effect. Self-cleaning can effectively reduce dust accumulation and blockage on the filter layer; the self-cleaning function can ensure that the filter layer is always kept in the best condition, avoiding the reduction of filtration accuracy due to blockage. The self-cleaning function can be performed without stopping the machine, thereby ensuring the continuous operation of the device. Moreover, when the spiral baffle moves up and down, it can scrape and clean the inner wall of the purification baffle tube, reducing the adhesion of dirt on the inner wall of the purification baffle tube, affecting the transfer effect of flue gas heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is the overall structural view of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the recycling box of the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the purification choke tube of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the heat energy utilization component of the utility model.

[0025] Description of reference numerals:

[0026] 1. Recycling box; 2. Water injection valve pipe; 3. Steam exhaust pipe; 4. Purification choke assembly; 401. Purification choke tube; 402. First filter layer; 403. Spiral choke; 404. Limit spring; 405. Assembly cross plate; 406. Auxiliary filter hole; 407. Second filter layer; 5. Heat energy utilization assembly; 501. Assembly seat; 502. Pulley; 503. Rotating shaft; 504. Rope; 505. Counterweight floating plate; 6. Flue gas conveying pipe; 7. Flue gas heat transfer pipe; 8. Fastening bolts. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The utility model provides a technical solution:

[0029] See also Figures 1 to 3 A solid waste combustion flue gas waste heat recycling device includes a recycling box 1, wherein the recycling box 1 is provided with a purification baffle assembly 4; the purification baffle assembly 4 includes a purification baffle tube 401 fixedly mounted at the bottom end of the recycling box 1, a spiral baffle 403 slidably mounted inside the purification baffle tube 401, and a second filter layer 407 fixedly mounted on the upper end of the spiral baffle 403; the purification baffle assembly 4 also includes an assembly horizontal plate 405 fixed to the bottom end of the inner side wall of the purification baffle tube 401, a limit spring 404 fixedly mounted on the upper end surface of the assembly horizontal plate 405, and a fixed connection between the limit spring 404 and the spiral baffle 403. The outer edge of the spiral baffle 403 is in contact with the inner side wall of the purification baffle tube 401, and a plurality of auxiliary filter holes 406 are formed inside the spiral baffle 403. A plurality of fastening bolts 8 are fixedly installed between the top end of the flue gas conveying pipe 6 and the bottom end surface of the recycling box 1. The flue gas output end of the flue gas conveying pipe 6 is tightly fitted with the flue gas inlet end of the purification choke tube 401. A first filter layer 402 is detachably installed inside the top end of the flue gas conveying pipe 6.

[0030] A flue gas heat transfer pipe 7 is fixedly mounted inside the recycling box 1 and communicates with the interior of the purification choke pipe 401. A flue gas delivery pipe 6 is fixedly mounted at the bottom end of the recycling box 1 and communicates with the interior of the purification choke pipe 401. A water injection valve pipe 2 and a steam exhaust pipe 3 are fixedly mounted at the top end of the recycling box 1. The steam exhaust pipe 3 is located behind the water injection valve pipe 2 and communicates with the recycling box 1.

[0031] By adopting the above technical solution, when in use, the water injection valve pipe 2 can be connected with the external water pipe, so that the external water can be injected into the recycling box 1 through the water injection valve pipe 2. When injecting water, the water amount in the recycling box 1 is prevented from exceeding the height of the purification choke pipe 401. After the water is injected, the flue gas conveying pipe 6 is fixed to the recycling box 1 by the fastening bolt 8, so that the purification choke pipe 401 in the recycling box 1 is connected with the flue gas conveying pipe 6, so that the flue gas in the flue gas conveying pipe 6 can be transported to the purification choke pipe 401. 01, the input flue gas can pass through the first filter layer 402 at the connection between the flue gas conveying pipe 6 and the purification choke pipe 401 to achieve the first level of filtration. After filtration, the flue gas can pass through the first filter layer 402 and enter the purification choke pipe 401. Under the blocking effect of the spiral choke 403 in the purification choke pipe 401, there is a long flow time. Moreover, the auxiliary filter hole 406 provided on the spiral choke 403 can play an auxiliary filtering effect. Finally, the flue gas entering the purification choke pipe 401 passes through the second filter layer 40 The filtered energy of 7 is input into the flue gas heat energy transfer pipe 7, which is distributed in an S-shape inside the recycling box 1. In this way, through the contact between the water inside the recycling box 1 and the flue gas heat energy transfer pipe 7, the heat in the flue gas can be transferred to the water and heated. Through the boiling and evaporation of the water, water vapor can be formed and discharged from the steam exhaust pipe 3. The discharged water vapor can be used for various purposes such as power generation and heating, realizing the recycling of heat energy in the flue gas. The designed purification flow blocking component 4 is completely located inside the recycling box 1, so that the flue gas purification process can be carried out inside the recycling box 1. In this way, the water in the recycling box 1 can absorb the waste heat of the flue gas during the purification process, avoiding the loss of the waste heat of the flue gas and the reduction of conversion efficiency, and the inability to fully convert the waste heat in the flue gas into usable energy. At the same time, the absorption of the waste heat of the flue gas by the water in the recycling box 1 can reduce the flue gas temperature during the flue gas purification process. As the flue gas temperature decreases, its volume will decrease, and the physical adsorption capacity of particulate matter, gaseous pollutants, etc. in the flue gas will be enhanced. This means that during the filtration and purification process, these pollutants are more easily captured and adsorbed by the filter layer, thereby improving filtration efficiency. When the flue gas temperature decreases, the thermal motion of the particles is weakened, reducing the possibility of resuspension and making the filtration process more stable and effective.

[0032] Specifically, such as Figure 1 、 Figure 3 and Figure 4As shown, a heat energy utilization component 5 is provided inside the recycling box 1, and the heat energy utilization component 5 includes two assembly seats 501 fixedly installed on the top surface of the inner part of the recycling box 1; a pulley 502 is rotatably installed at the middle position inside the assembly seat 501, and a rotating shaft 503 is connected between the pulley 502 and the assembly seat 501; a rope 504 is slidably arranged in the wheel groove of the pulley 502, and a counterweight floating plate 505 is fixedly installed at the front end of the rope 504, and the end of the rope 504 away from the counterweight floating plate 505 is fixedly connected to the second filter layer 407, and the rope 504 is slidably and sealedly connected to the top of the purification choke tube 401.

[0033] By adopting the above technical solution, when in use, when the water inside the recycling box 1 is in a boiling state, the counterweight float 505 floating on the water surface of the recycling box 1 will float up and down, and the floating counterweight float 505 can pull the rope 504 to move, and the rope 504 is wound around the wheel groove of the pulley 502, and the pulley 502 can rotate on the assembly seat 501 through the rotating shaft 503, so that the other end of the rope 504 can pull the second filter layer 407 and the spiral baffle 403 to move up and down inside the purification baffle tube 401, and the limit spring 404 at the bottom end of the spiral baffle 403 can play a limiting role, and when the spiral baffle 403 moves up and down, it can pull the limit spring 404 to elastically expand and contract, thereby causing the spiral baffle 403 and the second filter layer 407 to vibrate, and in the process of movement and vibration, the second filter layer 407 can be The filtered impurities on the filter layer 407 and the spiral baffle 403 fall off, thereby ensuring the filtering effect of the spiral baffle 403 and the second filter layer 407, and the flue gas introduced into the purification baffle 401 can also provide power for the movement and vibration of the spiral baffle 403 and the second filter layer 407, ensuring the self-cleaning effect of the spiral baffle 403 and the second filter layer 407, and the self-cleaning can effectively reduce the dust accumulation and blockage on the filter layer; the self-cleaning function can ensure that the filter layer is always kept in the best state, avoiding the reduction of filtering accuracy due to blockage, and the self-cleaning function can be performed without stopping the device, thereby ensuring the continuous operation of the device, and the spiral baffle 403 can scrape and clean the inner wall of the purification baffle 401 when it moves up and down, reducing the adhesion of dirt to the inner wall of the purification baffle 401, affecting the transfer effect of flue gas heat energy.

[0034] Working principle: When in use, the water injection valve pipe 2 can be connected with the external water pipe, so that the external water can be injected into the recycling box 1 through the water injection valve pipe 2. When injecting water, the water amount in the recycling box 1 should be prevented from exceeding the height of the purification choke pipe 401. After the water is injected, the flue gas conveying pipe 6 is fixed to the recycling box 1 through the fastening bolts 8, so that the purification choke pipe 401 in the recycling box 1 is connected with the flue gas conveying pipe 6. In this way, the flue gas in the flue gas conveying pipe 6 can be transported to the purification choke pipe 401, and the input flue gas can pass through the first The filter layer 402 realizes the first level of filtration. After filtration, the smoke can pass through the first filter layer 402 and enter the purification choke tube 401. Under the blocking effect of the spiral choke 403 in the purification choke tube 401, there is a long flow time. Moreover, the auxiliary filter hole 406 provided on the spiral choke 403 can play an auxiliary filtering effect. Finally, the smoke entering the purification choke tube 401 is filtered by the second filter layer 407 and input into the smoke heat energy transfer tube 7. The smoke heat energy transfer tube 7 is distributed in an S shape inside the recycling box 1, so as to pass through the water inside the recycling box 1 and the smoke heat energy transfer tube 7. The contact between the flue gas and the water can transfer the heat in the flue gas to the water and heat the water. When the water inside the recycling box 1 is in a boiling state, the counterweight float 505 floating on the water surface of the recycling box 1 will float up and down. The up and down floating counterweight float 505 can pull the rope 504 to move. The rope 504 is wound in the wheel groove of the pulley 502, and the pulley 502 can rotate on the assembly seat 501 through the rotating shaft 503. In this way, the other end of the rope 504 can pull the second filter layer 407 and the spiral baffle 403 to move up and down inside the purification baffle tube 401. The bottom end of the spiral baffle 403 The limit spring 404 can play a limiting role, and when the spiral baffle 403 moves up and down, it can pull the limit spring 404 to perform elastic expansion and contraction movement, thereby causing the spiral baffle 403 and the second filter layer 407 to vibrate. During the movement and vibration process, the filtered impurities on the second filter layer 407 and the spiral baffle 403 can be dropped, thereby ensuring the filtering effect of the spiral baffle 403 and the second filter layer 407. Through the boiling and evaporation of water, water vapor can be formed and discharged from the steam exhaust pipe 3. The discharged water vapor can be used for various purposes such as power generation and heating, thereby realizing the recycling of heat energy in the flue gas.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solid waste combustion flue gas waste heat recycling device, comprising a recycling box (1), characterized in that: A purification and flow-blocking component (4) is provided inside the recycling box (1); The purification choke assembly (4) comprises a purification choke tube (401) fixedly mounted at the bottom end of the recycling box (1); a spiral choke (403) is slidably mounted inside the purification choke tube (401); and a second filter layer (407) is fixedly mounted at the upper end of the spiral choke (403); A flue gas heat energy transfer pipe (7) that is interconnected with the interior of the purification choke pipe (401) is fixedly installed inside the recycling box (1), and a flue gas conveying pipe (6) that is interconnected with the interior of the purification choke pipe (401) is fixedly installed at the bottom end of the recycling box (1).

2. The solid waste combustion flue gas waste heat recycling device according to claim 1, characterized in that: A water injection valve pipe (2) and a steam exhaust pipe (3) are fixedly mounted on the top of the recycling box (1); the steam exhaust pipe (3) is located behind the water injection valve pipe (2); and the water injection valve pipe (2), the steam exhaust pipe (3) and the recycling box (1) are in communication with each other.

3. The solid waste combustion flue gas waste heat recycling device according to claim 1, characterized in that: The purification choke assembly (4) further comprises an assembly transverse plate (405) fixed to the bottom end of the inner side wall of the purification choke tube (401); a limit spring (404) is fixedly mounted on the upper end surface of the assembly transverse plate (405); and the limit spring (404) is fixedly connected to the spiral choke (403).

4. The solid waste combustion flue gas waste heat recycling device according to claim 3, characterized in that: The outer edge of the spiral baffle (403) is in contact with the inner wall of the purification baffle tube (401), and a plurality of auxiliary filter holes (406) are provided inside the spiral baffle (403).

5. The solid waste combustion flue gas waste heat recycling device according to claim 4, characterized in that: A plurality of fastening bolts (8) are fixedly installed between the top end of the flue gas conveying pipe (6) and the bottom end surface of the recycling box (1); the flue gas output end of the flue gas conveying pipe (6) is tightly fitted with the flue gas inlet end of the purification choke pipe (401); and a first filter layer (402) is detachably installed inside the top end of the flue gas conveying pipe (6).

6. The solid waste combustion flue gas waste heat recycling device according to claim 1, characterized in that: A heat energy utilization component (5) is provided inside the recycling box (1), and the heat energy utilization component (5) comprises two assembly seats (501) fixedly mounted on the top end surface inside the recycling box (1).

7. The solid waste combustion flue gas waste heat recycling device according to claim 6, characterized in that: A pulley (502) is rotatably mounted at the middle position of the assembly seat (501), and a rotating shaft (503) is connected between the pulley (502) and the assembly seat (501).

8. The solid waste combustion flue gas waste heat recycling device according to claim 7, characterized in that: A rope (504) is slidably mounted in the wheel groove of the pulley (502), a counterweight floating plate (505) is fixedly mounted on the front end of the rope (504), one end of the rope (504) away from the counterweight floating plate (505) is fixedly connected to the second filter layer (407), and the rope (504) is slidably and sealedly connected to the top of the purification choke tube (401).

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