Direct-fired waste gas incinerator

Abstract

The direct combustion type waste gas incinerator comprises a heat preservation shell, an inner cavity of the heat preservation shell is sequentially divided into a combustion section, a preheating section and a discharging section, the combustion section and the preheating section are separated through a first mounting plate, the preheating section and the discharging section are separated through a second mounting plate, the preheating section is provided with a first air inlet, and the discharging section is provided with a second air inlet. A plurality of heat exchange pipes are arranged between the first mounting plate and the second mounting plate, a plurality of baffle plates are arranged between the heat exchange pipes and the heat preservation shell, the first mounting plate is provided with waste gas through holes, and the combustion section is provided with a combustor used for combusting organic waste gas. The burner is provided with a second gas inlet communicating with the burning section and a first gas outlet communicating with the heat exchange pipe, the heat exchange pipe is used for conveying waste gas generated after burning to the discharging section, and the discharging section is provided with a second gas outlet. Waste gas is baffled for multiple times in the preheating section through the baffle plates, the staying time of the waste gas in the preheating section is prolonged, heat exchange between the waste gas and high-temperature gas after combustion is sufficient, and the recovery rate of combustion waste heat is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field, especially a kind of direct-fired waste gas incinerator. BACKGROUND

[0002] Direct-fired waste gas incinerator usually includes combustion chamber, waste gas preheating zone, heat recovery heat exchanger, exhaust chimney and so on part composition. Among them, combustion chamber is the region that waste gas mixes with auxiliary fuel combustion, waste gas preheating zone is used to preheat the waste gas entering incinerator, to improve combustion efficiency. Heat recovery heat exchanger can be used to recover the waste heat generated by combustion, for preheating the waste gas entering incinerator.

[0003] For example, the patent with the publication number CN221055020U discloses a kind of high-efficiency energy-saving organic waste gas incinerator structure including furnace body and heat exchange pipe, the furnace body includes: combustion section, waste gas preheating section, waste heat recovery section and tail gas cover, the combustion section, waste gas preheating section, waste heat recovery section and tail gas cover are sequentially arranged from bottom to top. Waste gas preheating section is provided with multiple heat exchange pipes. Waste gas enters waste gas preheating section from waste gas inlet and exchanges heat with heat exchange pipe, but since waste gas preheating section is not provided with waste gas guiding structure, heat exchange pipe is vertically arranged, resulting in that most of waste gas moves in vertical direction in waste gas preheating section, and the residence time is short, which can cause insufficient heat exchange between waste gas and heat exchange pipe, and low heat utilization rate.

[0004] In view of this, the utility model provides a kind of direct-fired waste gas incinerator to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of direct-fired waste gas incinerator to overcome the technical deficiency of the above, waste gas entering preheating section can be fully exchanged with heat exchange pipe, and the heat recovery of direct-fired waste gas incinerator is high.

[0006] A kind of direct-fired waste gas incinerator, including heat preservation shell, the heat preservation shell inner chamber is sequentially divided into combustion section, preheating section, discharge section along the axial direction, the combustion section is separated from preheating section by first mounting plate, the preheating section is separated from discharge section by second mounting plate, the preheating section is equipped with the first air inlet close to second mounting plate, multiple heat exchange pipes are arranged between the first mounting plate and second mounting plate, multiple baffles are arranged between the heat exchange pipe and heat preservation shell, the first mounting plate is equipped with waste gas through hole, the combustion section is equipped with the combustion machine for burning organic waste gas. The combustion machine is equipped with the second air inlet communicated with combustion section, the first air outlet communicated with heat exchange pipe, the heat exchange pipe is used to send the waste gas after combustion to discharge section, and the discharge section is equipped with second air outlet.

[0007] Preferably, there is a gap between the heat exchange pipes, the heat exchange pipes extend along the axial direction, and the baffles are provided with pipe holes for the heat exchange pipes to pass through.

[0008] Preferably, the combustion machine comprises a furnace, an ignition device, the furnace is provided with the second air inlet, the first air outlet.

[0009] Preferably, the ignition device is arranged at one end of the heat preservation shell, the furnace extends from the ignition device to the first mounting plate, the first air outlet is arranged at the end of the furnace opposite to the first mounting plate, and the second air inlet is arranged on the side of the furnace.

[0010] Preferably, the furnace is provided with a uniform air distribution plate, and the uniform air distribution plate is uniformly provided with a plurality of air vents.

[0011] Preferably, the furnace is provided with an explosion-proof pipe in communication with the outside of the heat preservation shell, and the explosion-proof pipe is provided with a safety valve.

[0012] Preferably, the heat preservation shell comprises a furnace body shell and a heat preservation inner shell, the first mounting plate and the second mounting plate are mounted in the furnace body shell, the heat preservation inner shell extends from the first mounting plate to the second mounting plate, and the heat exchange pipe and the baffle plate are mounted in the heat preservation inner shell.

[0013] Preferably, the first air inlet is arranged on the heat preservation inner shell, and an air inlet pipe is arranged at the first air inlet and extends to the outside of the furnace body shell.

[0014] Preferably, the first mounting plate and the second mounting plate are both provided with a plurality of mounting holes, and the hole walls of the mounting holes are in sealing connection with the outer walls of the heat exchange pipes.

[0015] The direct-fired waste gas incinerator also comprises a combustion temperature sensor for testing the temperature of the furnace, a furnace air pressure sensor for detecting the pressure of the furnace, a preheating air pressure sensor for detecting the preheating section, a preheating temperature sensor for detecting the temperature of the preheating section, an exhaust temperature sensor for detecting the temperature of the exhaust section, and an exhaust air pressure sensor for detecting the exhaust air pressure of the second air outlet.

[0016] Compared with the prior art, the direct-fired waste gas incinerator has the following beneficial effects:

[0017] 1. The direct-fired waste gas incinerator comprises a plurality of heat exchange pipes arranged in the preheating section, a plurality of baffles arranged between the heat exchange pipes and the heat preservation shell, and a plurality of baffle plates arranged in the preheating section.

[0018] 2. The inner cavity of the heat preservation shell is sequentially divided into a combustion section, a preheating section and a discharge section along the axial direction, and each section is separated by a mounting plate, so that the overall structure of the direct-fired waste gas incinerator is compact, and the land occupation of the equipment is reduced.

[0019] 3. The furnace is provided with an air distribution plate, so that the burned gas can be uniformly delivered to each heat exchange pipe.

[0020] So that the particulate impurities in the waste gas can be filtered out to prevent the heat exchange pipe from being blocked.

[0021] 4. The furnace is provided with an explosion-proof pipe and a safety valve in communication with the outside of the heat preservation shell, which can release pressure in time when the internal pressure of the equipment is too high, avoiding the safety problem of explosion caused by excessive pressure in the furnace. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of a direct-fired waste gas incinerator of the utility model.

[0023] Figure 2 It is a whole schematic view of a direct-fired waste gas incinerator of the utility model.

[0024] Figure 3 It is a side view of a direct-fired waste gas incinerator of the utility model.

[0025] Figure 4 It is Figure 3 the sectional view of A-A surface of

[0026] The implementation, functional characteristics and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0027] The features and other related features of the utility model will be further described in detail through embodiments, so as to facilitate the understanding of the technicians in the same industry:

[0028] Referring to Figures 1-4 , a specific embodiment of a direct-fired waste gas incinerator of the utility model is provided.

[0029] A direct-fired waste gas incinerator, comprising a heat preservation shell 1, the inner cavity of the heat preservation shell 1 is sequentially divided into a combustion section 2, a preheating section 3 and a discharge section 4 along the axial direction. The combustion section 2 and the preheating section 3 are separated by a first mounting plate 5, and the preheating section 3 and the discharge section 4 are separated by a second mounting plate 6.

[0030] The preheating section 3 is provided with a first air inlet 13 near the second mounting plate 6. Multiple heat exchange tubes 32 are provided between the first mounting plate 5 and the second mounting plate 6. Multiple baffles 33 are provided between the heat exchange tubes 32 and the insulation shell 1. The first mounting plate 5 is provided with an exhaust gas through hole 51.

[0031] The combustion section 2 is equipped with a burner 7 for burning organic waste gas. The burner 7 has a second air inlet 71 connected to the combustion section 2 and a first air outlet connected to the heat exchange tube 32. The heat exchange tube 32 is used to transport the waste gas after combustion to the emission section 4, which has a second air outlet 41.

[0032] like Figure 4 As shown, there are gaps between the heat exchange tubes 32, allowing the organic waste gas to flow through these gaps and exchange heat with the tubes. The heat exchange tubes 32 extend axially, and the baffle plate 33 has holes for the heat exchange tubes 32 to pass through. The heat exchange tubes 32 are connected to the insulation shell 1 through the baffle plate 33, allowing the heat exchange tubes 32 to be more securely installed inside the insulation shell 1.

[0033] The burner 7 includes a furnace 72 and an ignition device 73. The furnace 72 is provided with a second air inlet 71 and a first air outlet. The ignition device 73 is located at one end of the insulation shell 1. The furnace 72 extends from the ignition device 73 to a first mounting plate 5. The end of the furnace 72 opposite to the first mounting plate 5 is the first air outlet. The second air inlet 71 is located on the side of the furnace 72. The burner 7 is compact and has a simple structure.

[0034] The furnace chamber 72 is equipped with an air distribution plate 74, which has multiple ventilation holes evenly distributed. After combustion, the gas can be evenly distributed to each heat exchange tube after passing through the air distribution plate 74.

[0035] The furnace chamber 72 is equipped with an explosion-proof pipe 75 that communicates with the outside of the insulation shell 1. A safety valve (not shown in the attached drawings) is installed inside the explosion-proof pipe 75. The safety valve opens when the pressure inside the furnace chamber 72 is too high, releasing the pressure in time and preventing the safety problem of explosion caused by excessive pressure in the furnace chamber 72.

[0036] The insulation shell 1 includes an outer furnace shell 11 and an inner insulation shell 12. The first mounting plate 5 and the second mounting plate 6 are installed inside the outer furnace shell 11. The inner insulation shell 12 extends from the first mounting plate 5 to the second mounting plate 6, and the heat exchange tube 32 and the baffle plate 33 are installed inside the inner insulation shell 12, making the preheating section 3 a double-layer structure, which effectively improves the insulation performance of the preheating section 3, reduces the loss of heat inside the furnace, and thus improves the waste heat recovery rate.

[0037] The first air inlet 13 is located in the heat-insulating inner shell 12, and an air inlet pipe 14 is provided at the first air inlet 13. The air inlet pipe 14 extends to the outside of the furnace shell 11, and the organic waste gas enters the preheating section 3 through the air inlet pipe 14.

[0038] Both the first mounting plate 5 and the second mounting plate 6 are provided with multiple mounting holes, and the hole walls of the mounting holes are sealed to the outer wall of the heat exchange tube 32.

[0039] like Figure 1 As shown, the direct-fired waste gas incinerator also includes a combustion temperature sensor 81 for testing the temperature of the furnace 72, a furnace gas pressure sensor 82 for detecting the pressure of the furnace 72, a preheating air pressure sensor 83 for detecting the preheating section 3, a preheating temperature sensor 84 for detecting the temperature of the preheating section 3, an emission temperature sensor 85 for detecting the temperature of the emission section 4, an emission air pressure sensor 86 for detecting the emission from the second outlet 41, and a controller. The detection data from the combustion temperature sensor 81, furnace gas pressure sensor 82, preheating air pressure sensor 83, preheating temperature sensor 84, emission temperature sensor 85, and emission air pressure sensor 86 are transmitted to the controller. The controller controls the flow rate of the organic waste gas input and the ignition temperature of the ignition device 73 according to the status of the direct-fired waste gas incinerator, thereby ensuring the normal and safe operation of the direct-fired waste gas incinerator.

[0040] The furnace body shell 11 is provided with a mounting bracket 15 at the bottom for standing the furnace body shell 11 upright.

[0041] In this embodiment, the process of incinerating organic waste gas in the incinerator is as follows: First, the organic waste gas inlet pipe 14 enters the preheating section 3. Since the first inlet 13 is close to the second mounting plate 6, and the waste gas through-hole 51 is located on the first mounting plate 5, the organic waste gas needs to move from the second mounting plate 6 to the first mounting plate 5, increasing the flow path of the organic waste gas in the preheating section 3. During the flow process in the preheating section 3, multiple baffles 33 continuously change the flow direction of the organic waste gas, causing the organic waste gas to deflect multiple times in the preheating section 3, further extending the flow path of the organic waste gas in the preheating section 3. During the deflection process, the organic waste gas fully contacts the heat exchange tube 32 for heat exchange, increasing the initial temperature of the organic waste gas. After preheating, the organic waste gas enters the combustion section 2 through the waste gas through-hole 51, and then enters the burner 7 through the second inlet 71. The burner 7 ignites the organic waste gas, causing it to burn. After combustion, the organic matter in the waste gas is converted into carbon dioxide and water, and the organic waste gas becomes a dischargeable gas. After complete combustion, the exhaust gas enters the heat exchange tube 32 through the first outlet and exchanges heat with the newly entering exhaust gas in the preheating section 3, thereby reducing the temperature of the exhaust gas and realizing the recovery of combustion waste heat. Finally, the exhaust gas enters the discharge section 4 and is discharged from the second outlet 41.

[0042] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A direct-fired waste incinerator, characterized by comprising: The application relates to a heat preservation shell (1), wherein the inner cavity of the heat preservation shell (1) is sequentially divided into a combustion section (2), a preheating section (3) and a discharging section (4) along the axial direction, the combustion section (2) is separated from the preheating section (3) through a first mounting plate (5), the preheating section (3) is separated from the discharging section (4) through a second mounting plate (6), the preheating section (3) is provided with a first air inlet (13) close to the second mounting plate (6), a plurality of heat exchange pipes (32) are arranged between the first mounting plate (5) and the second mounting plate (6), a plurality of baffles (33) are arranged between the heat exchange pipes (32) and the heat preservation shell (1), the first mounting plate (5) is provided with a waste gas through hole (51), the combustion section (2) is provided with a combustion machine (7) for combusting organic waste gas, the combustion machine (7) is provided with a second air inlet (71) communicated with the combustion section (2) and a first air outlet communicated with the heat exchange pipes (32), the heat exchange pipes (32) are used for conveying the combusted waste gas to the discharging section (4), and the discharging section (4) is provided with a second air outlet (41).

2. A direct-fired waste incinerator as defined in claim 1, characterized in that The heat exchange pipes (32) are extended along the axial direction, and the baffles (33) are provided with pipe holes for the heat exchange pipes (32) to pass through.

3. A direct-fired waste incinerator as defined in claim 1, wherein The combustion machine (7) comprises a hearth (72) and an ignition device (73), the hearth (72) is provided with the second air inlet (71) and the first air outlet.

4. A direct-fired waste incinerator as claimed in claim 3, characterised in that, The ignition device (73) is arranged at one end of the heat preservation shell (1), the hearth (72) extends from the ignition device (73) to the first mounting plate (5), one end of the hearth (72) opposite to the first mounting plate (5) is the first air outlet, and the second air inlet (71) is arranged on the side of the hearth (72).

5. A direct-fired waste incinerator as defined in claim 4, wherein The hearth (72) is provided with an air uniformizing plate (74) with a plurality of air holes.

6. A direct-fired waste incinerator as defined in claim 3, wherein The hearth (72) is provided with an explosion-proof pipe (75) communicated with the outside of the heat preservation shell (1), and the explosion-proof pipe (75) is provided with a safety valve.

7. A direct-fired waste incinerator as defined in claim 1, wherein The heat preservation shell (1) comprises a furnace body shell (11) and a heat preservation inner shell (12), the first mounting plate (5) and the second mounting plate (6) are arranged in the furnace body shell (11), the heat preservation inner shell (12) extends from the first mounting plate (5) to the second mounting plate (6), and the heat exchange pipes (32) and the baffles (33) are arranged in the heat preservation inner shell (12).

8. A direct-fired waste incinerator as defined in claim 7, wherein The first air inlet (13) is arranged in the heat preservation inner shell (12), an air inlet pipe (14) is arranged at the first air inlet (13), and the air inlet pipe (14) extends to the outside of the furnace body shell (11).

9. A direct-fired waste incinerator as defined in claim 7, wherein The first mounting plate (5) and the second mounting plate (6) are both provided with a plurality of mounting holes, and the hole walls of the mounting holes are sealingly connected with the outer walls of the heat exchange pipes (32).

10. A direct-fired waste incinerator as defined in claim 6, wherein It also comprises a combustion temperature sensor for testing the temperature of the furnace (72), a furnace air pressure sensor for detecting the pressure of the furnace (72), a preheating air pressure sensor for detecting the preheating section (3), a preheating temperature sensor for detecting the temperature of the preheating section (3), an exhaust temperature sensor for detecting the temperature of the exhaust section (4), an exhaust air pressure sensor for detecting the exhaust air of the second air outlet (41).

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