Heat exchange device for smokeless pyrolysis gasification garbage clean combustion furnace

Abstract

The present invention discloses a heat exchange device for a smokeless pyrolysis gasification garbage clean combustion furnace, comprising: a flue gas heat exchanger and a dust removal mechanism, wherein the dust removal mechanism comprises a shell, the shell is provided with a first channel and a second channel, the first channel is connected to the exhaust gas discharge end of the furnace body, and the second channel is connected to the exhaust gas inlet end of the flue gas heat exchanger; the second channel is provided with a filter cartridge, and the gas passing through the second channel enters the gas outlet end through the filter cartridge, and the filter cartridge is provided with a filter filler for filtering the gas passing through the second channel; a sliding cavity is provided between the first channel and the second channel, and the sliding cavity is slidably provided with a sealing block, and the sealing block is connected with a first pre-tightening member, and the first pre-tightening member drives the sealing block to have a first position state for closing the sliding cavity, and in the first position state, the first channel and the second channel are closed, and the first channel intakes air. The present invention relates to the technical field of garbage disposal equipment.

Description

Technical Field

[0001] The invention relates to the technical field of garbage treatment equipment, and more specifically to a heat exchange device for a smokeless pyrolysis gasification garbage clean combustion furnace. Background Art

[0002] Whether garbage disposal saves energy and reduces emissions is related to the ecological environment. Traditional garbage incinerators burn in an oxygen-rich environment, and the oxidation reaction is violent. Heavy metals, nitrogen oxides and sulfur dioxide are in an active state, resulting in large flue gas treatment volumes and complex supporting equipment. Each stage is energy-intensive. In addition, leachate and fly ash filtered out by bags are hazardous wastes and need to be entrusted to qualified institutions for treatment, which increases the financial burden of garbage disposal year by year.

[0003] At present, the garbage needs to be incinerated in the furnace during the garbage disposal process. The high-temperature exhaust gas generated during the incineration needs to be heat exchanged through the flue gas heat exchanger to save energy and reduce emissions.

[0004] During the incineration process, a large number of smoke particles (oil stains, plastic burning smoke lamps) will be generated, which are easy to adhere to the inner wall of the heat exchange tube, resulting in a decrease in the heat exchange effect of the heat exchange tube. Summary of the invention

[0005] In view of the shortcomings and defects of the prior art, a heat exchange device for a smokeless pyrolysis gasification garbage clean combustion furnace is provided, comprising: a flue gas heat exchanger and a dust removal mechanism, wherein the dust removal mechanism comprises a shell, the shell is provided with a first channel and a second channel, the first channel is connected to the exhaust gas discharge end of the furnace body, and the second channel is connected to the exhaust gas inlet end of the flue gas heat exchanger;

[0006] The second channel is provided with a filter cartridge, and the gas passing through the second channel passes through the filter cartridge and enters the gas outlet end. The filter cartridge is provided with a filter filler for filtering the gas passing through the second channel;

[0007] A sliding cavity is provided between the first channel and the second channel, and a sealing block is slidably matched in the sliding cavity.

[0008] The sealing block is connected to a first pre-tightening member, and the first pre-tightening member drives the sealing block to have a first position state for closing the sliding cavity. In the first position state, the first channel and the second channel are closed.

[0009] The first channel is fed with gas, the gas acts on the sealing block and drives the sealing block to slide to a second position state with the sliding cavity opened, in which the first channel is connected with the second channel, and the first pre-tightening member supplies the sealing block with a tendency to always obtain the first position state;

[0010] The sealing block is provided with a connecting piece, one end of which extends into the filter cartridge, and the connecting piece is provided with a cleaning portion in contact with the filter filler. The sealing block moves through the connecting piece to drive the cleaning portion to act on the filter filler to clean the filter filler.

[0011] After adopting the above structure, the heat exchange device for smokeless pyrolysis gasification garbage clean combustion furnace of the present invention has the following advantages compared with the prior art: a filter filler is set to filter the gas, so as to reduce the adhesion of soot particles and the like on the inner tube wall of the heat exchange tube, resulting in a decrease in heat conduction efficiency, so that the heat exchange tube maintains a good heat exchange state, the heat exchange effect of the flue gas is high, and energy consumption is reduced;

[0012] The gas pressure causes the sealing block to move, and drives the cleaning part to act on the filter filler through the connecting piece to clean the filter filler, which can effectively remove soot particles and other debris attached to the filter filler, so that the filter filler maintains a good filtering effect on the gas.

[0013] As an improvement of the present invention, a one-way valve is connected to the front end of the first channel, and a pressure boosting chamber is formed between the one-way valve and the sliding chamber;

[0014] When the furnace is burning in the initial stage, the gas pressure fed into the first channel cannot drive the sealing block to move;

[0015] At this time, the gas continuously enters the pressurizing chamber to increase the pressure until the preload force of the first preload member is overcome, driving the sealing block to move so that the sealing block obtains the second position state. When the gas in the pressurizing chamber is discharged from the sliding chamber to the second channel, the first preload member drives the sealing block to return to the first position state.

[0016] When the furnace is burning stably, the pressure of the gas fed into the first channel can directly overcome the preload of the first preload member. At this time, the pressure of the gas passing through the booster chamber is stable, and the sealing block is always in the second position. The above improvement effectively cleans the filter assembly during the initial stage of furnace burning, avoiding the impact of cleaning the filter assembly during the stable burning stage on the fluidity of the gas, and making the device highly reliable.

[0017] As an improvement of the present invention, the connecting member includes a first guide rod and a second guide rod, and one end of the first guide rod is connected to the sealing block;

[0018] A connecting seat is provided at the front end of the filter cartridge, the second guide rod is rotatably connected to the connecting seat, one end of the second guide rod extends into the filter cartridge and is connected to the cleaning part, and the other end is threadedly matched with the first guide rod;

[0019] The sealing block drives the first guide rod to move, and the second guide rod obtains a torque to rotate with the axis as the rotation axis. In the above improvement, the cleaning part rotates to clean the filter packing, reducing the occurrence of cleaning dead angles and improving the cleaning effect of the filter packing.

[0020] As an improvement of the present invention, the number of the cleaning parts is several, and they are arranged axially on the second guide rod, each of the cleaning parts has a brush head, the filter filler is arranged on the outside of the brush head, and each brush head is in contact with the inside of the filter filler, the second guide rod rotates, the brush head rotates synchronously with the second guide rod, and the filter filler is cleaned in the motion trajectory of the brush head. The above improvement, arranging the brush head to clean the filter filler, further improves the cleaning effect.

[0021] As an improvement of the present invention, the flue gas heat exchanger is provided with a plurality of heat exchange tubes, and the exhaust gas inlet end is provided with a smoke diversion mechanism, the smoke diversion mechanism includes a tube body, the front end opening of the tube body is connected to the tail end of the second channel, the tail end opening of the tube body is connected to a heat exchange tube in the middle position, and the peripheral side openings of the tube body are connected to a plurality of other heat exchange tubes.

[0022] As an improvement of the present invention, the smoke guide mechanism further includes a slide seat, which is slidably arranged in the tube body, a second pre-tightening member is connected to the lower end of the slide seat, a through hole connecting the upper end opening with the lower end opening is arranged in the middle position of the slide seat, and a sealing portion is arranged on the outer side of the slide seat;

[0023] When the second pre-tightening member supplies the pre-tightening force to the slide seat so that the sealing part maintains the position of sealing the peripheral opening of the tube body, the exhaust gas entering the exhaust gas inlet end enters the heat exchange tube through the through hole;

[0024] When the furnace body is in the stable combustion stage, the gas pressure in the exhaust gas inlet end forces the slide seat to move to, and the sealing part opens the peripheral opening of the tube body, and the exhaust gas entering the exhaust gas inlet end enters the heat exchange tube through the through hole and the peripheral opening of the tube body. In the above improvement, during the cleaning process of the filter filler, the smoke particles brushed off will only enter one heat exchange tube and enter the subsequent processing steps from the heat exchange tube, and will not enter the remaining heat exchange tubes. The cleaned smoke particles can only adhere to the inner tube wall of one heat exchange tube, reducing the degree of heat exchange efficiency reduction caused by the smoke particles adhering to the inner wall of the heat exchange tube during the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention (in the initial stage of furnace burning, the sealing block is in the second position state, and the sealing part on the slide seat seals the peripheral opening of the tube body).

[0026] Figure 2 The present invention Figure 1 A schematic diagram of the enlarged structure in the middle.

[0027] Figure 3 It is a schematic diagram of the second position state of the sealing block in the furnace body burning stable stage, and the sealing part on the sliding seat opening the peripheral opening of the tube body.

[0028] Figure 4 The present invention Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0029] As shown in the figure: 1. Flue gas heat exchanger; 1., exhaust gas inlet end; 1.2, heat exchange tube; 2. Dust removal mechanism; 3. Shell; 3.1, first channel; 3.2, second channel; 4. Filter cartridge; 4.1, filter filler; 5. Sliding cavity; 5.1, sealing block; 5.11, first preload; 6. Connecting piece; 6.1, first guide rod; 6.2, second guide rod; 7. Cleaning part; 7.1, brush head; 8. Tube body; 9. Sliding seat; 9.1, sealing part; 9.2, through hole; 9.3, second preload; 10, one-way valve; 11, connecting seat. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] See also Figure 1-4 As shown, a heat exchange device for preventing smoke particles from adhering to the inner wall of a heat exchange tube 1.2 and causing a decrease in heat exchange effect comprises: a flue gas heat exchanger 1, a dust removal mechanism 2, the dust removal mechanism 2 comprises a shell 3, the shell 3 is provided with a first channel 3.1 and a second channel 3.2, the first channel 3.1 is connected to the exhaust gas discharge end of the furnace body, and the second channel 3.2 is connected to the exhaust gas inlet end 1. of the flue gas heat exchanger 1.;

[0032] The second channel 3.2 is provided with a filter cartridge 4, and the gas passing through the second channel 3.2 passes through the filter cartridge 4 and enters the gas outlet. The filter cartridge 4 is provided with a filter filler 4.1 for filtering the gas passing through the second channel 3.2;

[0033] A sliding cavity 5 is provided between the first channel 3.1 and the second channel 3.2, and a sealing block 5.1 is slidably matched with the sliding cavity 5.

[0034] The sealing block 5.1 is connected to a first pre-tightening member 5.11, and the first pre-tightening member 5.11 drives the sealing block 5.1 to have a first position state for closing the sliding cavity 5. In the first position state, the first channel 3.1 and the second channel 3.2 are closed.

[0035] The first channel 3.1 is fed with gas, and the gas acts on the sealing block 5.1 and drives the sealing block 5.1 to slide to a second position state in which the sliding cavity 5 is opened. In the second position state, the first channel 3.1 is connected with the second channel 3.2, and the first pre-tightening member 5.11 supplies the sealing block 5.1 with a tendency to always obtain the first position state;

[0036] The sealing block 5.1 is provided with a connecting piece 6, one end of which extends into the filter cartridge 4, and the connecting piece 6 is provided with a cleaning portion 7 in contact with the filter packing 4.1. The sealing block 5.1 moves through the connecting piece 6 to drive the cleaning portion 7 to act on the filter packing 4.1 to clean the filter packing 4.1.

[0037] After adopting the above structure, the heat exchange device of the present invention which prevents smoke particles from adhering to the inner wall of the heat exchange tube 1.2 and causing a decrease in heat exchange effect has the following advantages compared with the prior art: the filter filler 4.1 is set to filter the gas, thereby reducing the adhesion of smoke particles and the like to the inner wall of the heat exchange tube 1.2, which causes a decrease in heat conduction efficiency, so that the heat exchange tube 1.2 maintains a good heat exchange state, the heat exchange effect of the flue gas is high, and energy consumption is reduced;

[0038] The gas pressure moves the sealing block 5.1, and drives the cleaning part 7 to act on the filter filler 4.1 through the connecting piece 6 to clean the filter filler 4.1, which can effectively remove the soot particles and other debris attached to the filter filler 4.1, so that the filter filler 4.1 maintains a good filtering effect on the gas.

[0039] As an improvement of the present invention, a one-way valve 10 is connected to the front end of the first channel 3.1, and a pressurizing chamber is formed between the one-way valve 10 and the sliding chamber 5;

[0040] When the furnace is burning in the initial stage, the gas pressure fed into the first channel 3.1 cannot drive the sealing block 5.1 to move;

[0041] At this time, the gas continuously enters the pressurizing chamber to increase the pressure until the preload force of the first preload member 5.11 is overcome, driving the sealing block 5.1 to move so that the sealing block 5.1 obtains the second position state. When the gas in the pressurizing chamber is discharged from the sliding chamber 5 to the second channel 3.2, the first preload member 5.11 drives the sealing block 5.1 to return to the first position state.

[0042] When the furnace is burning stably, the gas pressure fed into the first channel 3.1 can directly overcome the preload force of the first preload member 5.11. At this time, the pressure of the gas passing through the booster chamber is stable, and the sealing block 5.1 is always in the second position. The above improvement effectively cleans the filter assembly during the initial stage of furnace burning, avoiding the impact of cleaning the filter assembly during the stable burning stage on the fluidity of the gas, and making the device highly reliable.

[0043] As an improvement of the present invention, the connecting member 6 comprises a first guide rod 6.1 and a second guide rod 6.2, and one end of the first guide rod 6.1 is connected to the sealing block 5.1;

[0044] The front end of the filter cartridge 4 is provided with a connecting seat 11, the second guide rod 6.2 is rotatably connected to the connecting seat 11, and one end of the second guide rod extends into the filter cartridge 4 and is connected to the cleaning part 7, and the other end is threadedly matched with the first guide rod 6.1;

[0045] The sealing block 5.1 drives the first guide rod 6.1 to move, and the second guide rod 6.2 obtains a torque to rotate with the axis as the rotation axis. In the above improvement, the cleaning part 7 rotates to clean the filter packing 4.1, reducing the occurrence of cleaning dead angles and improving the cleaning effect of the filter packing 4.1.

[0046] As an improvement of the present invention, the number of the cleaning parts 7 is several, and they are arranged axially on the second guide rod 6.2, each of the cleaning parts 7 is provided with a brush head 7.1, the filter filler 4.1 is arranged on the outside of the brush head 7.1, and each brush head 7.1 is in contact with the inside of the filter filler 4.1, the second guide rod 6.2 rotates, the brush head 7.1 rotates synchronously with the second guide rod 6.2, and the filter filler 4.1 is cleaned in the motion track of the brush head 7.1. The above improvement, arranging the brush head 7.1 to clean the filter filler 4.1, further improves the cleaning effect.

[0047] As an improvement of the present invention, the flue gas heat exchanger 1 is provided with a plurality of heat exchange tubes 1.2, and the exhaust gas inlet end 1 is provided with a smoke guiding mechanism, which includes a tube body 8, the front end opening of the tube body 8 is connected to the tail end of the second channel 3.2, the tail end opening of the tube body 8 is connected to a heat exchange tube 1.2 in the middle position, and the peripheral side openings of the tube body 8 are connected to a plurality of other heat exchange tubes 1.2.

[0048] As an improvement of the present invention, the smoke guide mechanism further includes a slide seat 9, which is slidably arranged in the tube body 8, and the lower end of the slide seat 9 is connected to a second pre-tightening member 9.3, and a through hole 9.2 is arranged in the middle position of the slide seat 9 to connect the upper end opening with the lower end opening, and a sealing portion 9.1 is arranged on the outer side of the slide seat 9;

[0049] When the second pre-tightening member 9.3 supplies the pre-tightening force to the slide seat 9, the sealing part 9.1 keeps the position of sealing the peripheral opening of the tube body 8, and the exhaust gas entering the exhaust gas inlet end 1. passes through the through hole 9.2 and enters the heat exchange tube 1.2;

[0050] When the furnace body is in the stable stage of burning, the gas pressure in the exhaust gas inlet end 1 forces the slide 9 to move to the sealing part 9.1 to open the peripheral opening of the tube body 8, and the exhaust gas entering the exhaust gas inlet end 1. passes through the through hole 9.2 and the peripheral opening of the tube body 8 into the heat exchange tube 1.2. In the above improvement, during the cleaning process of the filter filler 4.1, the smoke particles brushed off will only enter one heat exchange tube 1.2 and enter the subsequent processing steps from the heat exchange tube 1.2, and will not enter the remaining heat exchange tubes 1.2. The cleaned smoke particles can only adhere to the inner tube wall of one heat exchange tube 1.2, reducing the degree of heat exchange efficiency reduction caused by the smoke particles adhering to the inner wall of the heat exchange tube 1.2 during the cleaning process.

Claims

1. A heat exchange device for a smokeless pyrolysis gasification garbage clean combustion furnace, characterized in that: include: A flue gas heat exchanger (1), a dust removal mechanism (2), the dust removal mechanism (2) comprising a housing (3), the housing (3) being provided with a first channel (3.1) and a second channel (3.2), the first channel (3.1) being connected to an exhaust gas discharge end of a furnace body, and the second channel (3.2) being connected to an exhaust gas inlet end (1) of the flue gas heat exchanger (1); The second channel (3.2) is provided with a filter cartridge (4), and the gas passing through the second channel (3.2) passes through the filter cartridge (4) and enters the gas outlet end, and the filter cartridge (4) is provided with a filter filler (4.1) for filtering the gas passing through the second channel (3.2); A sliding cavity (5) is provided between the first channel (3.1) and the second channel (3.2), and a sealing block (5.1) is slidably matched in the sliding cavity (5). The sealing block (5.1) is connected to a first pre-tightening member (5.11), and the first pre-tightening member (5.11) drives the sealing block (5.1) to have a first position state for closing the sliding cavity (5). In the first position state, the first channel (3.1) and the second channel (3.2) are closed. The first channel (3.1) is supplied with gas, the gas acts on the sealing block (5.1) and drives the sealing block (5.1) to slide to a second position state in which the sliding cavity (5) is opened, in which the first channel (3.1) is connected with the second channel (3.2), and the first pre-tightening member (5.11) supplies the sealing block (5.1) with a tendency to always obtain the first position state; The sealing block (5.1) is provided with a connecting piece (6), one end of which extends into the filter cartridge (4), and the connecting piece (6) is provided with a cleaning portion (7) in contact with the filter filler (4.1); the sealing block (5.1) moves through the connecting piece (6) to drive the cleaning portion (7) to act on the filter filler (4.1) to clean the filter filler (4.1).

2. The heat exchange device for the smokeless pyrolysis gasification garbage clean combustion furnace according to claim 1 is characterized in that: A one-way valve (10) is connected to the front end of the first channel (3.1), and a pressure-boosting chamber is formed between the one-way valve (10) and the sliding chamber (5); When the furnace is in the initial stage of burning, the pressure of the gas fed into the first channel (3.1) is unable to drive the sealing block (5.1) to move; At this time, the gas continuously enters the pressurizing chamber to increase the pressure until the preload force of the first preload member (5.11) is overcome, driving the sealing block (5.1) to move so that the sealing block (5.1) obtains the second position state. When the gas in the pressurizing chamber is discharged from the sliding chamber (5) to the second channel (3.2), the first preload member (5.11) drives the sealing block (5.1) to return to the first position state. When the furnace body is in the stable burning stage, the pressure of the gas fed into the first channel (3.1) can directly overcome the preload force of the first preload member (5.11). At this time, the pressure of the gas passing through the boost chamber is stable, and the sealing block (5.1) is always in the second position state.

3. The heat exchange device for the smokeless pyrolysis gasification garbage clean combustion furnace according to claim 2 is characterized in that: The connecting member (6) comprises a first guide rod (6.1) and a second guide rod (6.2); one end of the first guide rod (6.1) is connected to the sealing block (5.1); A connecting seat (11) is provided at the front end of the filter cartridge (4); the second guide rod (6.2) is rotatably connected to the connecting seat (11), one end of the second guide rod extends into the filter cartridge (4) to be connected to the cleaning portion (7), and the other end is threadedly engaged with the first guide rod (6.1); The sealing block (5.1) drives the first guide rod (6.1) to move, and the second guide rod (6.2) obtains a torque for rotating with the axis as the rotation axis.

4. The heat exchange device for the smokeless pyrolysis gasification garbage clean combustion furnace according to claim 3 is characterized in that: The cleaning parts (7) are multiple in number and are arranged axially on the second guide rod (6.2); each cleaning part (7) is provided with a brush head (7.1); the filter filler (4.1) is arranged on the outside of the brush head (7.1), and each brush head (7.1) is in contact with the inside of the filter filler (4.1); when the second guide rod (6.2) rotates, the brush head (7.1) rotates synchronously with the second guide rod (6.2), and the filter filler (4.1) is cleaned in the motion track of the rotation of the brush head (7.1).

5. The heat exchange device for the smokeless pyrolysis gasification garbage clean combustion furnace according to claim 1 is characterized in that: The flue gas heat exchanger (1) is provided with a plurality of heat exchange tubes (1.2); the exhaust gas inlet end (1.) is provided with a flue gas guiding mechanism, the flue gas guiding mechanism comprising a tube body (8); the front end opening of the tube body (8) is connected to the rear end of the second channel (3.2); the rear end opening of the tube body (8) is connected to a heat exchange tube (1.2) at a middle position; and the peripheral side opening of the tube body (8) is connected to a plurality of other heat exchange tubes (1.2).

6. The heat exchange device for the smokeless pyrolysis gasification garbage clean combustion furnace according to claim 2 is characterized in that: The smoke guide mechanism further comprises a slide seat (9), the slide seat (9) being slidably arranged in the tube body (8), the lower end of the slide seat (9) being connected with a second pre-tightening member (9.3), a through hole (9.2) for connecting the upper end opening with the lower end opening being arranged in the middle position of the slide seat (9), and a sealing portion (9.1) being arranged on the outer side of the slide seat (9); When the furnace body is in the initial stage of burning, the second pre-tightening member (9.3) provides the slide seat (9) with pre-tightening force so that the sealing part (9.1) maintains the position of sealing the peripheral opening of the tube body (8), and the exhaust gas entering the exhaust gas inlet end (1.) enters the heat exchange tube (1.2) through the through hole (9.2); When the furnace body is in the stable combustion stage, the gas pressure in the exhaust gas inlet end (1.) forces the slide seat (9) to move, and the sealing part (9.1) opens the peripheral opening of the tube body (8), and the exhaust gas entering the exhaust gas inlet end (1.) passes through the through hole (9.2) and the peripheral opening of the tube body (8) and enters the heat exchange tube (1.2).

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