Waste-to-energy combustion equipment and process

By installing a cyclone separator and an adjustable baffle structure in the waste-to-energy equipment, combined with a deacidification reaction tower and a dust collector, multiple flue gas purification is achieved, solving the problems of low safety and efficiency of the dust removal device, and improving the purification efficiency and combustion efficiency.

CN116006984BActive Publication Date: 2025-09-05HENAN ZERO CARBON TECH RES INST CO LTD
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Patent Information

Application Number
CN202211692217.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-28
Publication Date
2025-09-05
Estimated Expiration
2042-12-28

AI Technical Summary

Technical Problem

The dust removal equipment in existing waste-to-energy projects is not very safe and environmentally friendly, has high dust removal pressure, and the deacidification tower is inefficient, making it unable to effectively respond to changes in the concentration and composition of pollutants in the flue gas.

Method used

A cyclone separator and an adjustable baffle structure are set in front of the furnace, combined with a deacidification reaction tower and a dust collector. The flue gas flow and flow velocity are adjusted by the adjustable blade structure. Combined with the cyclone separator, multiple purifications are carried out, and the waste heat of the flue gas is used to preheat the air source to improve the purification efficiency.

Benefits of technology

It improves the flue gas purification efficiency, reduces the risk of equipment failure, improves combustion efficiency and environmental protection, and reduces dust removal pressure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a garbage power generation combustion device and process, in which a cyclone separator I is used to separate and purify the flue gas once after the grate furnace, and the separated solids enter the slag bin. The flue gas after the primary separation and purification enters the heat exchange flue gas duct for heat exchange, thereby fully utilizing the waste heat of the flue gas. In addition, the flue gas is directly used as the heat source of the air preheater in the heat exchange, and the waste heat is used to preheat the primary air and the secondary air, thereby improving the combustion quality and efficiency of the garbage. The flue gas after the heat exchange will be deacidified in the deacidification reaction tower, and after deacidification, it will be cyclone-separated again, and finally dusted in the dust collector, thereby improving the cleanliness of the flue gas.
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Description

Technical Field

[0001] The present invention belongs to the technical field of waste incineration, and in particular relates to a waste power generation combustion device and process. Background Art

[0002] The issue of garbage disposal has always been a major environmental issue of concern to the world. As a widely used treatment method, garbage incineration and reuse produces a large amount of fly ash after the incineration of domestic garbage. At present, the dust removal device of the waste-to-energy project is close to the bag dust collector at the tail end, which is not safe and environmentally friendly and has a high dust removal pressure. Therefore, the present invention combines the design concept of a circulating fluidized bed, sets a dust removal process in the furnace, and reduces the fly ash at the front end. Due to the large differences in the composition of domestic garbage, the pollutant composition and concentration in the flue gas after boiler incineration are unstable, but the blade angle of the flue gas distributor of the semi-dry reaction tower is fixed, resulting in low efficiency of the deacidification tower. The use of adjustable blades can fully match and adjust according to the changes in the concentration and composition of pollutants in the flue gas, thereby improving the reaction efficiency. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a waste-to-energy combustion device and process.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A waste-to-energy combustion device comprises a grate furnace, a cyclone separator I, a heat exchange flue gas duct, a waste heat recycling system, a deacidification reaction tower and a dust collector; the waste heat recycling system comprises a superheater, an air preheater and an economizer;

[0006] The grate furnace includes a grate, a furnace, a slag bin, and a primary air chamber. The exhaust port of the furnace is connected to the flue gas inlet of the cyclone separator I through a flue gas exhaust channel I; the discharge port at the bottom of the cyclone separator I is connected to the slag bin through a slag discharge pipe I; the flue gas outlet at the top of the cyclone separator I is connected to the heat exchange flue gas pipe, and a superheater, an air preheater, and an economizer are installed in the heat exchange flue gas pipe from top to bottom. The air preheater is connected to the primary air system and the secondary air system.

[0007] The lower part of the heat exchange flue gas duct is a conical cavity, which is located below the economizer, and the slag discharge port at the bottom of the conical cavity is connected to the slag bin through the slag discharge pipe II;

[0008] The smoke exhaust port on the side of the conical cavity is connected to the smoke inlet of the deacidification reaction tower through the smoke exhaust channel II; the deacidification smoke exhaust port of the deacidification reaction tower is connected to the smoke inlet of the dust collector through the smoke exhaust channel III.

[0009] As a preferred solution of the present invention, the smoke outlet of the dust collector is connected to the denitrification equipment, and the smoke outlet of the denitrification equipment is connected to the chimney via the induced draft fan and the smoke exhaust channel IV.

[0010] As a preferred embodiment of the present invention, the primary air system includes a primary fan, a primary cold air duct and a primary hot air duct; the cold air outlet of the primary fan is connected to the primary cold air duct, the primary cold air duct is connected to the primary air inlet of the air preheater, the primary air outlet of the air preheater is connected to the primary hot air duct, and the air outlet of the primary hot air duct is connected to the primary air chamber;

[0011] The secondary air system includes a secondary fan, a secondary cold air duct, and a secondary hot air duct. The cold air outlet of the secondary fan is connected to the secondary cold air duct, which is connected to the secondary air inlet of the air preheater. The secondary air outlet of the air preheater is connected to the secondary hot air duct, and the air outlet of the secondary hot air duct is connected to the furnace. The air preheater is directly placed within the heat exchange flue gas duct, using flue gas waste heat as its heating source, completely replacing the conventional air preheater's sole use of steam heating. This reduces energy consumption while improving overall combustion efficiency.

[0012] As a preferred embodiment of the present invention, an adjustable baffle structure is provided at the flue gas inlet of the cyclone separator 1. The adjustable baffle structure allows the flue gas in the cyclone separator 1 to have adjustable flow velocity and flow rate, so that the flue gas can be fully separated and purified in the cyclone separator 1.

[0013] As a preferred embodiment of the present invention, the adjustable baffle structure includes a baffle bracket, a fixed baffle, a dynamic baffle, a baffle shaft, a baffle connecting rod and a driving rod; the baffle bracket is installed at the flue gas inlet of the cyclone separator I, the baffle bracket is provided with a baffle mounting port, fixed baffles are symmetrically arranged at the upper end and the lower end of the baffle mounting port, the baffle mounting port between the two fixed baffles is in a trumpet shape, a dynamic baffle is arranged between the two fixed baffles, the dynamic baffle is fixed on the baffle rotating shaft, the baffle rotating shaft is horizontally arranged, the baffle rotating shaft passes through the baffle bracket and rotates relative to the baffle bracket; one end of the baffle rotating shaft outside the baffle bracket is connected to the baffle connecting rod, the baffle connecting rod is hinged to the driving rod, and the driving rod is vertically arranged;

[0014] The driving rod is connected to the electric actuator outside the furnace, and the electric actuator outside the furnace drives the driving rod to move up and down in the vertical direction. The baffle connecting rod moves up and down with the driving rod, but because the baffle connecting rod is connected to the baffle rotating shaft, the up and down movement of the baffle connecting rod is converted into the rotational movement of the baffle rotating shaft. The rotation of the baffle rotating shaft drives the dynamic baffle to rotate, and the rotation of the dynamic baffle realizes the adjustment of the flue gas entry angle. The two inclined fixed baffles make the baffle mounting port a bell mouth, and the dynamic baffle is located at the small diameter of the bell mouth. The fixed baffle can change the direction of the flue gas and preliminarily adjust the smoke intake amount.

[0015] As a preferred embodiment of the present invention, an adjustable leaf structure is provided at the smoke inlet of the deacidification reaction tower. The adjustable leaf structure allows the direction, flow rate and flow velocity of the smoke entering the deacidification reaction tower to be adjusted, thereby improving the deacidification reaction efficiency.

[0016] As a preferred solution of the present invention, the adjustable blade structure includes an adjusting bracket, a central support, an adjustable blade, a blade shaft, a blade reversing connecting rod, and a rotating ring. The adjusting bracket is installed at the smoke inlet of the deacidification reaction tower, and the adjusting bracket is provided with a smoke inlet channel. A central support is installed at the center of the smoke inlet channel, and the central support is connected to the inner wall of the smoke inlet channel. The blade shafts are radially installed between the inner wall of the smoke inlet channel and the outer wall of the central support, and an adjustable blade is installed on each blade shaft; the blade shaft is arranged along the radial direction of the smoke inlet channel, and one end of the blade shaft is connected to the central support and rotates relative to the central support, and the other end of the blade shaft is exposed through the adjusting bracket and connected to the blade reversing connecting rod, the blade reversing connecting rod is provided with a waist hole, the blade reversing connecting rod is connected to the connecting column on the rotating ring, the connecting column moves in the waist hole, the rotating ring is installed on the outer wall of the adjusting bracket and rotates relative to the adjusting bracket, the outer wall of the adjusting bracket is provided with a supporting roller, and the supporting roller is in contact with the rotating ring; the rotating ring is provided with a power receiving rod.

[0017] The power receiving rod receives external power to make the rotating ring rotate along the adjusting bracket. The connecting column on the rotating ring is fixed to the rotating ring, so the connecting column will rotate with the rotating ring. However, since the other end of the connecting column is in the waist hole of the moving blade reversing connecting rod, the rotation of the connecting column will be converted into the swing of the moving blade reversing connecting rod, and the swing of the moving blade reversing connecting rod will eventually be converted into the rotation of the moving blade rotating shaft, and the rotation of the moving blade rotating shaft will be converted into the rotation of the adjustable blade, so that the adjustable blade can change the incident angle of the flue gas.

[0018] As a preferred embodiment of the present invention, a cyclone separator II is provided between the deacidification reaction tower and the dust collector. The deacidification exhaust port of the deacidification reaction tower is connected to the flue gas inlet of cyclone separator II. The discharge port at the bottom of cyclone separator II is connected to the grate chamber via a slag discharge pipe. The flue gas outlet at the top of cyclone separator II is connected to the dust collector's smoke inlet. The provision of cyclone separator II enables further gas-solid separation of the deacidified flue gas, further improving the flue gas cleanliness. The flue gas after the secondary gas-solid separation finally enters the dust collector for dust removal, which can reduce the dust removal pressure of the dust collector.

[0019] The present invention also provides a garbage power generation combustion process using garbage power generation combustion equipment.

[0020] The waste-to-energy combustion process is as follows: waste burns on the grate, and the generated combustion flue gas enters the exhaust channel I from the exhaust port of the furnace. The combustion flue gas passes through the adjustable baffle structure to change the flow rate and flow rate, and then enters the cyclone separator I. The gas-solid separation is carried out in the cyclone separator I, and the separated solid particles are discharged from the discharge port at the bottom of the cyclone separator I through the slag discharge pipe I to the slag bin; the flue gas after the primary purification and separation enters the heat exchange flue gas pipe from the flue gas outlet at the top of the cyclone separator I, and undergoes heat exchange cooling and secondary purification in the heat exchange flue gas pipe.

[0021] The flue gas separated by primary purification exchanges heat with the superheater, air preheater and economizer. After the heat exchange, the flue gas temperature drops, and the solid particles in the flue gas are deposited in the conical cavity and discharged from the slag discharge port at the bottom of the conical cavity through the slag discharge pipe II to the slag bin;

[0022] The air preheater heats the cold air extracted by the primary fan and then sends it to the primary air chamber, which provides primary air to the grate;

[0023] The air preheater heats the cold air extracted by the secondary fan and then transports it to the furnace to provide secondary air to the furnace;

[0024] The flue gas after cooling and purification enters the deacidification reaction tower for deacidification; the flue gas after deacidification enters the cyclone separator II for secondary separation and purification; after secondary separation and purification, it enters the dust collector for final purification and dust removal, and the purified and dust-removed flue gas is discharged from the chimney after passing through the denitrification equipment.

[0025] The present invention uses a cyclone separator I to separate and purify the flue gas after the grate furnace, and the separated solids enter the slag bin. The flue gas after the one-time separation and purification enters the heat exchange flue gas pipeline for heat exchange, thereby fully utilizing the waste heat of the flue gas. Moreover, the flue gas is directly used as the heat source of the air preheater in the heat exchange, and the waste heat of the flue gas is used to complete the preheating of the primary air and the secondary air, thereby improving the combustion quality and efficiency of the garbage. The flue gas after the heat exchange will be fully deacidified in the deacidification reaction tower, and then cyclone-separated again after deacidification, and finally dusted by the dust collector, thereby improving the cleanliness of the flue gas, reducing equipment failures, and thus reducing environmental risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a structural schematic diagram of the garbage power generation combustion equipment of the present invention.

[0028] Figure 2 This is a schematic structural diagram of the adjustable baffle structure at location 1 of the cyclone separator of the present invention.

[0029] Figure 3 It is a schematic diagram of the coordination of the baffle bracket, the fixed baffle and the movable baffle of the present invention.

[0030] Figure 4 Schematic diagram of the cooperation between the baffle shaft, baffle connecting rod and driving rod of the present invention.

[0031] Figure 5 This is a schematic structural diagram of the movable blade structure at the deacidification reaction tower of the present invention.

[0032] Figure 6 This is a schematic structural diagram of the moving blade reversing connecting rod of the present invention. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0034] Example:

[0035] A waste power generation combustion equipment, such as Figure 1 As shown, it includes a grate furnace 1, a cyclone separator I2, a heat exchange flue gas duct 3, a waste heat recycling system, a deacidification reaction tower 4 and a dust collector 5; the waste heat recycling system includes a superheater 6, an air preheater 8 and an economizer 9.

[0036] The grate furnace 1 includes a grate 100, a furnace 102, a slag bin 103 and a primary air chamber 104. The smoke exhaust port of the furnace 102 is connected to the smoke inlet of the cyclone separator 12 through a smoke exhaust channel 110, and an adjustable baffle structure is provided at the smoke inlet of the cyclone separator 12, so that the smoke in the cyclone separator 1 can adjust the flow rate and flow rate, so that it can be fully separated and purified in the cyclone separator 1.

[0037] The adjustable baffle structure, such as Figure 2-4As shown, it includes a baffle bracket 31, a fixed baffle 32, a movable baffle 33, a baffle shaft 34, a baffle connecting rod 35 and a driving rod 36; the baffle bracket 31 is installed at the flue gas inlet of the cyclone separator I2, and the baffle bracket 31 is provided with a baffle mounting port, and fixed baffles 32 are symmetrically arranged at the upper end and the lower end of the baffle mounting port. The baffle mounting port between the two fixed baffles is in a trumpet shape, and a movable baffle 33 is arranged between the two fixed baffles 32. The movable baffle 33 is fixed on the baffle rotating shaft 34, and the baffle rotating shaft 34 is arranged horizontally. The baffle rotating shaft 34 passes through the baffle bracket 31 and rotates relative to the baffle bracket 31; one end of the baffle rotating shaft 34 located outside the baffle bracket is connected to the baffle connecting rod 35, the baffle connecting rod 35 is hinged to the driving rod 36, and the driving rod 36 is arranged vertically.

[0038] The driving rod is connected to the electric actuator outside the furnace, and the electric actuator outside the furnace drives the driving rod to move up and down in the vertical direction. The baffle connecting rod moves up and down with the driving rod, but because the baffle connecting rod is connected to the baffle rotating shaft, the up and down movement of the baffle connecting rod is converted into the rotational movement of the baffle rotating shaft. The rotation of the baffle rotating shaft drives the dynamic baffle to rotate, and the rotation of the dynamic baffle realizes the adjustment of the flue gas entry angle. The two inclined fixed baffles make the baffle mounting port a bell mouth, and the dynamic baffle is located at the small diameter of the bell mouth. The fixed baffle can change the direction of the flue gas and preliminarily adjust the smoke intake amount.

[0039] The discharge port at the bottom of cyclone separator I2 is connected to slag bin 103 via slag discharge pipe I11. The flue gas outlet at the top of cyclone separator I2 is connected to heat exchange flue gas pipe 3. Inside heat exchange flue gas pipe 3, there are installed, from top to bottom, a superheater 6, an air preheater 8, and an economizer 9. The air preheater 8 is connected to the primary and secondary air systems. The primary and secondary air systems share a common air preheater.

[0040] The primary air system includes a primary fan 18, a primary cold air duct and a primary hot air duct 20; the cold air outlet of the primary fan 18 is connected to the primary cold air duct, the primary cold air duct is connected to the primary air inlet of the air preheater 8, the primary air outlet of the air preheater 8 is connected to the primary hot air duct 20, and the air outlet of the primary hot air duct 20 is connected to the primary air chamber 104;

[0041] The secondary air system includes a secondary fan 21, a secondary cold air duct, and a secondary hot air duct 23. The cold air outlet of the secondary fan 21 is connected to the secondary cold air duct, which is connected to the secondary air inlet of the air preheater 8. The secondary air outlet of the air preheater 8 is connected to the secondary hot air duct 23, and the air outlet of the secondary hot air duct 23 communicates with the furnace 102. The air preheater is directly arranged within the heat exchange flue gas duct 3, using flue gas waste heat as the air preheater's heating source, completely replacing the conventional air preheater's sole use of steam heating. This reduces energy consumption while improving overall combustion efficiency.

[0042] The lower part of the heat exchange flue gas duct 3 is a conical cavity 300, which is located below the economizer 9, and the slag discharge port at the bottom of the conical cavity 300 is connected to the slag bin 103 through the slag discharge pipe II12;

[0043] The smoke exhaust port on the side of the conical cavity 300 is connected to the smoke inlet of the deacidification reaction tower 4 through the smoke exhaust channel II13; an adjustable leaf structure is provided at the smoke inlet of the deacidification reaction tower 4, and the adjustable leaf structure allows the flow direction, flow rate and flow velocity of the flue gas entering the deacidification reaction tower to be adjusted, thereby improving the deacidification reaction efficiency.

[0044] The adjustable leaf structure, such as Figure 5 and 6 As shown, it includes an adjustment bracket 41, a central support 42, an adjustable blade 43, a moving blade shaft 45, a moving blade reversing link 46, and a rotating ring 47. The adjustment bracket 41 is installed at the smoke inlet of the deacidification reaction tower. The adjustment bracket 41 is provided with a smoke inlet channel. A central support 42 is installed in the center of the smoke inlet channel. The central support 42 is connected to the inner wall of the smoke inlet channel. Moving blade shafts 45 are radially installed between the inner wall of the smoke inlet channel and the outer wall of the central support 42. Each moving blade shaft 45 is installed with an adjustable blade 43; the moving blade shaft 45 is arranged along the radial direction of the smoke inlet channel. One end of the moving blade shaft 45 is connected to the central support and rotates relative to the central support. The other end of the moving blade shaft 45 is exposed through the adjusting bracket 41 and is connected to the moving blade reversing link 46. The moving blade reversing link 46 is provided with a waist hole. The moving blade reversing link 46 is connected to the connecting column 471 on the rotating ring 47. The connecting column 471 moves in the waist hole. The rotating ring 47 is installed on the outer wall of the adjusting bracket 41 and rotates relative to the adjusting bracket. The outer wall of the adjusting bracket 41 is provided with a supporting roller 48, and the supporting roller 48 is in contact with the rotating ring; the rotating ring 47 is provided with a power receiving rod 49.

[0045] The power receiving rod receives external power to make the rotating ring rotate along the adjusting bracket. The connecting column on the rotating ring is fixed to the rotating ring, so the connecting column will rotate with the rotating ring. However, since the other end of the connecting column is in the waist hole of the moving blade reversing connecting rod, the rotation of the connecting column will be converted into the swing of the moving blade reversing connecting rod, and the swing of the moving blade reversing connecting rod will eventually be converted into the rotation of the moving blade rotating shaft, and the rotation of the moving blade rotating shaft will be converted into the rotation of the adjustable blade, so that the adjustable blade can change the incident angle of the flue gas.

[0046] The deacidification exhaust port of the deacidification reaction tower 4 is connected to the smoke inlet of the dust collector 5 through the smoke exhaust channel III14; the smoke outlet of the dust collector 5 is connected to the denitrification equipment 24, and the smoke outlet of the denitrification equipment is connected to the chimney 17 through the induced draft fan 15 and the smoke exhaust channel IV16.

[0047] To further improve the cleanliness of the final exhaust flue gas, a cyclone separator II is installed between the deacidification reaction tower 4 and the dust collector 5. The deacidification exhaust port of the deacidification reaction tower 4 is connected to the flue gas inlet of the cyclone separator II. The discharge port at the bottom of the cyclone separator II is connected to the furnace car through a slag discharge pipe. The flue gas outlet at the top of the cyclone separator II is connected to the flue gas inlet of the dust collector 5. The installation of the cyclone separator II can further separate the gas and solids of the deacidified flue gas, further improving the cleanliness of the flue gas. The flue gas after the secondary gas-solid separation finally enters the dust collector for dust removal, which can reduce the dust removal pressure of the dust collector.

[0048] In the waste-to-energy combustion process using this waste-to-energy combustion equipment, waste is burned on the grate 100, and the generated combustion flue gas enters the exhaust channel 110 from the exhaust port of the furnace 102. The combustion flue gas passes through the adjustable baffle structure to change the flow rate and flow rate, and then enters the cyclone separator 12. In the cyclone separator 12, a gas-solid separation is performed. The separated solid particles are discharged from the discharge port at the bottom of the cyclone separator 12 through the slag discharge pipe 111 to the slag bin 103; the flue gas that has been purified and separated once enters the heat exchange flue gas pipe 3 from the flue gas outlet at the top of the cyclone separator 12, and undergoes heat exchange cooling and secondary purification in the heat exchange flue gas pipe 3.

[0049] The flue gas separated by primary purification exchanges heat with the superheater 6, air preheater 8 and economizer 9. After the heat exchange, the flue gas temperature drops, and the solid particles in the flue gas are deposited in the conical cavity and discharged from the slag discharge port at the bottom of the conical cavity 300 through the slag discharge pipe II12 to the slag bin 103;

[0050] The air preheater heats the cold air extracted by the primary fan and then delivers it to the primary air chamber 104, which provides primary air to the grate;

[0051] The air preheater heats the cold air extracted by the secondary fan and then delivers it to the furnace 102, providing secondary air to the furnace;

[0052] The flue gas after cooling and purification enters the deacidification reaction tower 4 for deacidification; the flue gas after deacidification enters the cyclone separator II for secondary separation and purification; after secondary separation and purification, it enters the dust collector for final purification and dust removal, and the purified and dust-removed flue gas is discharged from the chimney after passing through the denitrification equipment.

[0053] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A waste-to-energy combustion device, characterized by: It comprises a grate furnace (1), a cyclone separator I (2), a heat exchange flue gas duct (3), a waste heat recycling system, a deacidification reaction tower (4) and a dust collector (5); the waste heat recycling system comprises a superheater (6), an air preheater (8) and an economizer (9); The grate furnace (1) comprises a grate (100), a furnace (102), a slag bin (103) and a primary air chamber (104); the smoke exhaust port of the furnace (102) is connected to the smoke inlet of the cyclone separator I (2) through a smoke exhaust channel I (10); the discharge port at the bottom of the cyclone separator I (2) is connected to the slag bin (103) through a slag discharge pipe I (11); the smoke outlet at the top of the cyclone separator I (2) is connected to the heat exchange smoke pipe (3), and a superheater (6), an air preheater (8) and an economizer (9) are installed in the heat exchange smoke pipe (3) from top to bottom; the air preheater (8) is connected to the primary air system and the secondary air system; The lower portion of the heat exchange flue gas duct (3) is a conical cavity (300), the conical cavity (300) is located below the economizer (9), and the slag discharge port at the bottom of the conical cavity (300) is connected to the slag bin (103) through the slag discharge duct II (12); The smoke exhaust port on the side of the conical cavity (300) is connected to the smoke inlet of the deacidification reaction tower (4) through the smoke exhaust channel II (13); The deacidification smoke outlet of the deacidification reaction tower (4) is connected to the smoke inlet of the dust collector (5) through the smoke exhaust channel III (14); An adjustable blade structure is provided at the smoke inlet of the deacidification reaction tower (4); the adjustable blade structure comprises an adjusting bracket (41), a central support member (42), an adjustable blade (43), a movable blade shaft (45), a movable blade reversing connecting rod (46), and a rotating ring (47); the adjusting bracket (41) is installed at the smoke inlet of the deacidification reaction tower; the adjusting bracket (41) is provided with a smoke inlet channel; a central support member (42) is installed at the center of the smoke inlet channel; the central support member (42) is connected to the inner wall of the smoke inlet channel; a movable blade shaft (45) is radially installed between the inner wall of the smoke inlet channel and the outer wall of the central support member (42); and an adjustable blade (43) is installed on each movable blade shaft (45); the movable blade shaft (4 5) It is arranged along the radial direction of the smoke inlet channel, and one end of the moving blade shaft (45) is connected to the central support and rotates relative to the central support. The other end of the moving blade shaft (45) passes through the adjustment bracket (41) and is exposed and connected to the moving blade reversing link (46). The moving blade reversing link (46) is provided with a waist hole. The moving blade reversing link (46) is connected to the connecting column (471) on the rotating ring (47). The connecting column (471) moves in the waist hole. The rotating ring (47) is installed on the outer wall of the adjustment bracket (41) and rotates relative to the adjustment bracket. The outer wall of the adjustment bracket (41) is provided with a supporting roller (48), and the supporting roller (48) is in contact with the rotating ring; the rotating ring (47) is provided with a power receiving rod (49).

2. The waste-to-energy combustion equipment according to claim 1, characterized in that: The smoke outlet of the dust collector (5) is connected to the denitrification equipment (24), and the smoke outlet of the denitrification equipment is connected to the chimney (17) via the induced draft fan (15) and the smoke exhaust channel IV (16).

3. The waste-to-energy combustion equipment according to claim 1, characterized in that: The primary air system comprises a primary air blower (18), a primary cold air duct and a primary hot air duct (20); the cold air outlet of the primary air blower (18) is connected to the primary cold air duct, the primary cold air duct is connected to the primary air inlet of the air preheater (8), the primary air outlet of the air preheater (8) is connected to the primary hot air duct (20), and the air outlet of the primary hot air duct (20) is connected to the primary air chamber (104); The secondary air system comprises a secondary air fan (21), a secondary cold air duct and a secondary hot air duct (23); the cold air outlet of the secondary air fan (21) is connected to the secondary cold air duct, the secondary cold air duct is connected to the secondary air inlet of the air preheater (8), the secondary air outlet of the air preheater (8) is connected to the secondary hot air duct (23), and the air outlet of the secondary hot air duct (23) is communicated with the furnace (102).

4. The waste-to-energy combustion equipment according to claim 1, characterized in that: An adjustable baffle structure is provided at the flue gas inlet of the cyclone separator I (2).

5. The waste-to-energy combustion equipment according to claim 4, characterized in that: The adjustable baffle structure comprises a baffle support (31), a fixed baffle (32), a movable baffle (33), a baffle rotating shaft (34), a baffle connecting rod (35) and a driving rod (36); the baffle support (31) is installed at the smoke inlet of the cyclone separator I (2), the baffle support (31) is provided with a baffle mounting opening, fixed baffles (32) are symmetrically arranged at the upper end and the lower end of the baffle mounting opening, and the baffle mounting opening between the two fixed baffles is in a bell-mouth shape A movable baffle (33) is provided between the two fixed baffles (32), the movable baffle (33) is fixed on the baffle rotating shaft (34), the baffle rotating shaft (34) is provided horizontally, the baffle rotating shaft (34) passes through the baffle bracket (31) and rotates relative to the baffle bracket (31); one end of the baffle rotating shaft (34) located outside the baffle bracket is connected to the baffle connecting rod (35), the baffle connecting rod (35) is hinged to the driving rod (36), and the driving rod (36) is provided vertically.

6. The waste-to-energy combustion equipment according to claim 1, characterized in that: A cyclone separator II is provided between the deacidification reaction tower (4) and the dust collector (5). The deacidification smoke outlet of the deacidification reaction tower (4) is connected to the smoke inlet of the cyclone separator II. The discharge port at the bottom of the cyclone separator II is connected to the grate chamber through a slag discharge pipe. The smoke outlet at the top of the cyclone separator I (2) is connected to the smoke inlet of the dust collector (5).

7. A waste-to-energy combustion process, using the waste-to-energy combustion equipment according to any one of claims 1 to 6.

8. The waste-to-energy combustion process according to claim 7, characterized in that: The garbage burns on the grate (100), and the generated combustion flue gas enters the exhaust channel I (10) from the exhaust port of the furnace (102). The combustion flue gas passes through the adjustable baffle structure to change the flow rate and flow rate and then enters the cyclone separator I (2). A gas-solid separation is performed in the cyclone separator I (2). The separated solid particles are discharged from the discharge port at the bottom of the cyclone separator I (2) through the slag discharge pipe I (11) to the slag bin (103). The flue gas that has been purified and separated once enters the heat exchange flue gas pipe (3) from the flue gas outlet at the top of the cyclone separator I (2), and heat exchange cooling and secondary purification are performed in the heat exchange flue gas pipe (3). The flue gas separated by the primary purification is heat-exchanged with the superheater (6), the air preheater (8) and the economizer (9). After the heat exchange, the flue gas temperature drops, and the solid particles in the flue gas are deposited in the conical cavity and discharged from the slag discharge port at the bottom of the conical cavity (300) through the slag discharge pipe II (12) to the slag bin (103). The air preheater heats the cold air extracted by the primary fan and then transmits it to the primary air chamber (104), which provides primary air to the grate; The air preheater heats the cold air extracted by the secondary fan and then transmits it to the furnace (102), providing secondary air to the furnace; The flue gas after cooling and purification enters the deacidification reaction tower (4) for deacidification; the flue gas after deacidification enters the cyclone separator II for secondary separation and purification; after secondary separation and purification, it enters the dust collector for final purification and dust removal, and the purified and dust-removed flue gas is discharged from the chimney after passing through the denitrification equipment.

Citation Information

Patent Citations

  • Flue gas purifier

    CN104707468A

  • CFB boiler fire coal coupling treatment process for combustible solid waste and treatment line of process

    CN110410797A