Safe and efficient combustion device for high-concentration spontaneous combustion and flammable mixed waste gas

Abstract

The utility model relates to the technical field of waste gas combustion, in particular to a safe and efficient combustion device for high-concentration spontaneous combustion and flammable mixed waste gas, which comprises a combustion shell, the combustion shell is of a hollow cylinder structure, an upper partition plate is fixed on the inner wall of the combustion shell, and a lower partition plate is arranged below the upper partition plate. And the lower partition plate is fixedly mounted on the inner wall of the combustion shell. According to the safe and efficient combustion device for the high-concentration spontaneous combustion and flammable mixed waste gas, the interior of the combustion shell is divided into the independent combustion chamber, the independent mixing chamber and the independent conveying chamber through the upper partition plate and the lower partition plate, air can be stably conveyed into the device through the air conveying barrel, and the two sets of air conveying pipes supply air to the combustion chamber and the mixing chamber correspondingly; the spoiler arranged in the mixing chamber is aligned with the gas outlet of the gas conveying pipe, turbulent flow is formed in the mixing chamber, sufficient mixing of air and waste gas is increased, sufficient generation of combustion reaction is promoted, the waste gas can be combusted more completely, and the combustion efficiency of the waste gas is improved.

Description

A safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed exhaust gases Technical Field

[0001] This utility model relates to the field of waste gas combustion technology, specifically a safe and efficient combustion device for a mixture of high-concentration spontaneously combustible and flammable waste gases. Background Technology

[0002] In industrial production processes, many industries generate large quantities of highly concentrated spontaneously combustible and flammable mixed waste gases, such as those from the chemical, coating, printing, and electronics industries. These mixed waste gases typically contain various volatile organic compounds and other combustible components. If these waste gases are directly released into the atmosphere without treatment, they will cause serious environmental pollution. They not only form photochemical smog, harming air quality, but may also pose a direct threat to human health. Currently, the most common method for treating these waste gases is combustion.

[0003] The mixing effect of exhaust gas and combustion air during combustion directly affects combustion efficiency. Current combustion devices input air through a single pipe, which results in exhaust gas and air not being mixed sufficiently and evenly. This causes some exhaust gas to fail to come into contact with enough oxygen, thus preventing complete combustion and reducing combustion efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a safe and efficient combustion device for high-concentration spontaneous combustion and flammable mixed exhaust gases. This device is equipped with a mixing chamber to fully mix air and exhaust gases, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas, comprising a combustion shell, the combustion shell being a hollow cylindrical structure, an upper partition fixed to the inner wall of the combustion shell, a lower partition disposed below the upper partition, the lower partition being fixedly installed on the inner wall of the combustion shell, an electronic igniter fixedly installed on the outer surface of the combustion shell, the ignition needle of the electronic igniter being inserted into the interior of the combustion shell, and the ignition needle of the electronic igniter being located above the upper partition.

[0006] Preferably, the upper and lower partitions form three chambers inside the combustion shell. The upper partition is above the combustion chamber, the space between the upper and lower partitions is the mixing chamber, and the lower partition is below the conveying chamber, combustion chamber, and mixing chamber. A connecting valve is provided through the surface of the upper partition, and the upper surface of the combustion shell is provided with an exhaust pipe. One end of the exhaust pipe is located inside the combustion chamber, and the other end of the exhaust pipe is connected to the heat exchanger.

[0007] By adopting the above technical solution, the combustion shell can be divided into independent chambers using the upper and lower baffles.

[0008] Preferably, the combustion shell is provided with an air delivery structure inside, which continuously delivers external air into the device through an air delivery cylinder.

[0009] By adopting the above technical solution, continuous air delivery can be achieved using an air delivery structure.

[0010] Preferably, the air delivery structure includes an air delivery cylinder, which is fixed to the upper surface of the combustion shell. The lower end of the air delivery cylinder passes through the upper and lower partitions and is inserted into the delivery chamber. The air delivery cylinder is a hollow structure with an open upper surface. An air delivery pipe is arranged in a ring on the outer surface of the air delivery cylinder. A one-way valve is installed inside the air delivery pipe. The direction of the one-way valve inside the air delivery pipe is that the air flows from the air delivery pipe into the combustion shell. Two sets of air delivery pipes are provided. The outlet of one set of air delivery pipes is located in the combustion chamber, and the outlet of the other set of air delivery pipes is located in the mixing chamber. A negative pressure fan is fixedly installed on the inner wall of the air delivery pipe.

[0011] By adopting the above technical solution, air can be continuously and stably delivered to the combustion chamber and mixing chamber inside the device using the gas delivery pipe.

[0012] Preferably, a baffle is fixedly installed on the upper surface of the lower partition, the baffle is aligned with the air outlet of the air supply pipe, and three baffles are arranged in a ring on the upper surface of the lower partition. There are two sets of baffles, and another set of baffles is fixedly installed on the lower surface of the upper partition.

[0013] By employing the above technical solution, turbulence can be generated within the mixing chamber using a baffle plate.

[0014] Preferably, a pre-dust removal structure is provided below the combustion shell. The pre-dust removal structure separates dust and impurities in the exhaust gas through the dust removal shell, thereby increasing the subsequent combustion efficiency.

[0015] By adopting the above technical solution, impurities in the exhaust gas can be separated in advance using the pre-dust removal structure.

[0016] Preferably, the pre-dust removal structure includes a dust removal shell, the upper section of which is a cylindrical body, the lower section of which is a conical body, the lower end of which is open, an air inlet pipe is embedded and fixed on the side surface of which, a connecting pipe is fixed through the upper surface of which, the air inlet pipe and the connecting pipe are tangentially aligned, the upper end of the connecting pipe is inserted into the conveying chamber of the combustion shell, a conveying pipe is fixed through the outer surface of the connecting pipe, and the upper end of the conveying pipe is inserted into the mixing chamber through the surface of the lower partition.

[0017] By adopting the above technical solution, impurities in the exhaust gas can be separated using the dust collector housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are: this safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed exhaust gases:

[0019] 1. This device separates the combustion chamber, mixing chamber, and delivery chamber within the combustion shell using upper and lower partitions. Air can be stably delivered into the device through an air supply pipe. Two sets of air supply pipes supply air to the combustion chamber and mixing chamber respectively. A baffle plate installed in the mixing chamber is aligned with the air outlet of the air supply pipe, creating turbulence in the mixing chamber. This increases the thorough mixing of air and exhaust gas, promotes complete combustion, and allows the exhaust gas to burn more completely, thereby improving the exhaust gas combustion efficiency.

[0020] 2. This device has a dust removal shell installed below the combustion shell. When the exhaust gas enters the combustion chamber, the dust and impurities in the exhaust gas are separated from the exhaust gas by centrifugal force during the movement of the exhaust gas in the dust removal shell, so as to avoid the accumulation of these impurities during the combustion process and thus improve the combustion efficiency of the exhaust gas.

[0021] 3. This device connects an exhaust pipe to a heat exchanger on the upper surface of the combustion shell. The high-temperature exhaust gas generated by the combustion of waste gas enters the heat exchanger through the exhaust pipe. The heat exchanger makes full use of the waste heat of the exhaust gas to preheat other substances or fluids that need to be heated, thus realizing the secondary utilization of energy. Attached Figure Description

[0022] Figure 1 is a front view of the structure of this utility model;

[0023] Figure 2 is a schematic diagram of the rear view structure of this utility model;

[0024] Figure 3 is a schematic diagram of the internal structure of the dust removal shell of this utility model;

[0025] Figure 4 is a schematic diagram of the installation structure of the upper and lower partitions of this utility model;

[0026] Figure 5 is a schematic diagram of the gas delivery cylinder installation structure of this utility model;

[0027] Figure 6 is a schematic diagram of the installation structure of the spoiler of this utility model.

[0028] In the diagram: 1. Combustion shell; 2. Upper baffle; 3. Lower baffle; 4. Electronic igniter; 5. Gas cylinder; 6. Gas pipe; 7. Negative pressure fan; 8. Gas outlet pipe; 9. Heat exchanger; 10. Baffle plate; 11. Dust collector shell; 12. Inlet pipe; 13. Connecting pipe; 14. Delivery pipe. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please refer to Figures 1-6. This utility model provides a technical solution: a safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas, including a combustion shell 1, an upper partition 2, a lower partition 3, an electronic igniter 4, a gas delivery cylinder 5, a gas delivery pipe 6, a negative pressure fan 7, an exhaust pipe 8, a heat exchanger 9, a baffle plate 10, a dust removal shell 11, an intake pipe 12, a connecting pipe 13, and a conveying pipe 14.

[0031] A pre-dust removal structure is provided below the combustion shell 1. The pre-dust removal structure separates dust and impurities in the exhaust gas through the dust removal shell 11, thereby increasing the subsequent combustion efficiency. The pre-dust removal structure includes a dust removal shell 11. The upper section of the dust removal shell 11 is a cylindrical body, and the lower section of the dust removal shell 11 is a conical body. The lower end of the dust removal shell 11 is open. An air inlet pipe 12 is embedded and fixed on the side surface of the dust removal shell 11. A connecting pipe 13 is fixed through the upper surface of the dust removal shell 11. The air inlet pipe 12 and the connecting pipe 13 are tangentially aligned. The upper end of the connecting pipe 13 is inserted into the conveying chamber of the combustion shell 1. A conveying pipe 14 is fixed through the outer surface of the connecting pipe 13. The upper end of the conveying pipe 14 is inserted into the mixing chamber through the surface of the lower partition 3.

[0032] As shown in Figures 1 and 3, a high-concentration mixture of spontaneously combustible and flammable exhaust gas containing dust and impurities is introduced into the dust removal shell 11 of the pre-dust removal structure through the inlet pipe 12. The exhaust gas forms a rotating airflow inside the dust removal shell 11. Under the action of centrifugal force, the dust and impurities are thrown against the inner wall of the dust removal shell 11 and slide down along the conical cylindrical part, and are discharged from the lower opening. The exhaust gas after dust removal enters the conveying chamber of the device through the connecting pipe 13, and finally enters the mixing chamber through the conveying pipe 14, thereby improving the subsequent combustion efficiency.

[0033] An air delivery structure is installed inside the combustion shell 1. This structure continuously supplies external air to the interior of the device via an air delivery cylinder 5. The air delivery structure includes the air delivery cylinder 5, which is fixed to the upper surface of the combustion shell 1. The lower end of the air delivery cylinder 5 passes through the upper partition 2 and the lower partition 3 and is inserted into the delivery chamber. The air delivery cylinder 5 is a hollow structure with an open upper surface. An air delivery pipe 6 is annularly arranged on the outer surface of the air delivery cylinder 5. A one-way valve is installed inside the air delivery pipe 6, and the direction of the one-way valve inside the air delivery pipe 6 is... The gas supply pipe 6 flows into the combustion shell 1. There are two sets of gas supply pipes 6. The outlet of one set of gas supply pipes 6 is located in the combustion chamber, and the outlet of the other set of gas supply pipes 6 is located in the mixing chamber. A negative pressure fan 7 is fixedly installed on the inner wall of the gas supply pipe 6. A baffle 10 is fixedly installed on the upper surface of the lower partition 3. The baffle 10 is aligned with the outlet of the gas supply pipe 6. Three baffles 10 are arranged in a ring on the upper surface of the lower partition 3. There are two sets of baffles 10. Another set of baffles 10 is fixedly installed on the lower surface of the upper partition 2.

[0034] As shown in Figures 1, 3, 4, 5, and 6, the negative pressure fan 7 is started. The negative pressure fan 7 draws in external air from the open end of the air delivery cylinder 5. The external air enters the combustion chamber and the mixing chamber through the air delivery pipe 6 on the surface of the air delivery cylinder 5. When the air enters the mixing chamber, the treated exhaust gas also enters the mixing chamber through the delivery pipe 14. Meanwhile, the baffle 10 on the upper surface of the lower baffle 3 is aligned with the outlet of the air delivery pipe 6, which disrupts the gas flow, increases the mixing effect, and makes the mixed gas composition more uniform.

[0035] The combustion shell 1 is a hollow cylindrical structure. An upper partition 2 is fixed to the inner wall of the combustion shell 1. A lower partition 3 is provided below the upper partition 2. The lower partition 3 is fixedly installed on the inner wall of the combustion shell 1. An electronic igniter 4 is fixedly installed on the outer surface of the combustion shell 1. The ignition needle of the electronic igniter 4 is inserted into the interior of the combustion shell 1. The ignition needle of the electronic igniter 4 is located above the upper partition 2. The upper partition 2 and the lower partition 3 form three chambers inside the combustion shell 1. The upper partition 2 is the combustion chamber. The space between the upper partition 2 and the lower partition 3 is the mixing chamber. The space below the lower partition 3 is the delivery chamber and the combustion chamber and mixing chamber. A connecting valve is provided through the surface of the upper partition 2. An exhaust pipe 8 is provided through the upper surface of the combustion shell 1. One end of the exhaust pipe 8 is located in the combustion chamber. The other end of the exhaust pipe 8 is connected to the heat exchanger 9.

[0036] As shown in Figures 2 and 4, the connecting valve on the surface of the upper partition 2 is opened to introduce the uniformly mixed exhaust gas into the combustion chamber. The connecting valve is then closed, and the electronic igniter 4 is activated. Its ignition needle is located in the combustion chamber above the upper partition 2, generating an electric spark to ignite the mixed gas. During combustion, air continuously enters the combustion chamber from the gas supply pipe 6 to maintain the combustion reaction. The high-temperature, high-pressure gas generated by combustion reacts fully in the combustion chamber, releasing a large amount of heat energy. The high-temperature exhaust gas after combustion is discharged from the combustion chamber through the exhaust pipe 8, the other end of which is connected to a heat exchanger 9. In the heat exchanger 9, the heat from the high-temperature exhaust gas is transferred to the substance or fluid that needs to be heated, achieving waste heat recovery and utilization.

[0037] Working principle: When using this high-concentration self-igniting and flammable mixed waste gas safe and efficient combustion device, the mixed waste gas is introduced into the dust removal shell 11 through the air inlet pipe 12. Inside the dust removal shell 11, under the action of centrifugal force, the dust and impurities in the waste gas are separated from the waste gas. The dust-removed waste gas enters the conveying chamber through the connecting pipe 13 and enters the mixing chamber along the conveying pipe 14. The negative pressure fan 7 is used to input external air into the mixing chamber, so that the air and waste gas are fully mixed. The mixed waste gas enters the combustion chamber, and the electronic igniter 4 is started to ignite the mixed gas. The high-temperature waste gas generated by combustion enters the heat exchanger 9 through the exhaust pipe 8 for heat recovery, which increases the overall practicality.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas, comprising a combustion shell (1), wherein the combustion shell (1) is a hollow cylindrical structure, characterized in that: The inner wall of the combustion shell (1) is fixed with an upper partition (2), and a lower partition (3) is provided below the upper partition (2). The lower partition (3) is fixedly installed on the inner wall of the combustion shell (1). An electronic igniter (4) is fixedly installed on the outer surface of the combustion shell (1). The ignition needle of the electronic igniter (4) is inserted into the interior of the combustion shell (1). The ignition needle of the electronic igniter (4) is located above the upper partition (2).

2. The safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas according to claim 1, characterized in that: The upper partition (2) and the lower partition (3) form three chambers inside the combustion shell (1). The upper partition (2) is above the combustion chamber, the upper partition (2) and the lower partition (3) are between the mixing chamber, and the lower partition (3) is below the conveying chamber, combustion chamber and mixing chamber. A connecting valve is provided through the surface of the upper partition (2). The upper partition (2) is connected to the valve. An exhaust pipe (8) is provided through the upper surface of the combustion shell (1). One end of the exhaust pipe (8) is located in the combustion chamber, and the other end of the exhaust pipe (8) is connected to the heat exchanger (9).

3. The safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas according to claim 1, characterized in that: An air delivery structure is provided inside the combustion shell (1), and the air delivery structure realizes the continuous delivery of external air to the inside of the device through the air delivery cylinder (5).

4. The safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas according to claim 3, characterized in that: The air delivery structure includes an air delivery cylinder (5), which is fixed to the upper surface of the combustion shell (1). The lower end of the air delivery cylinder (5) passes through the upper partition (2) and the lower partition (3) and is inserted into the delivery chamber. The air delivery cylinder (5) is a hollow structure with an open upper surface. An air delivery pipe (6) is arranged in a ring on the outer surface of the air delivery cylinder (5). A one-way valve is arranged inside the air delivery pipe (6). The direction of the one-way valve inside the air delivery pipe (6) is that the air delivery pipe (6) flows into the combustion shell (1). Two sets of air delivery pipes (6) are arranged. The outlet of one set of air delivery pipes (6) is located in the combustion chamber, and the outlet of the other set of air delivery pipes (6) is located in the mixing chamber. A negative pressure fan (7) is fixedly installed on the inner wall of the air delivery pipe (6).

5. The safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas according to claim 1, characterized in that: A baffle plate (10) is fixedly installed on the upper surface of the lower partition plate (3). The baffle plate (10) is aligned with the air outlet of the air supply pipe (6). Three baffle plates (10) are arranged in a ring on the upper surface of the lower partition plate (3). There are two sets of baffle plates (10). The other set of baffle plates (10) is fixedly installed on the lower surface of the upper partition plate (2).

6. The safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas according to claim 1, characterized in that: A pre-dust removal structure is provided below the combustion shell (1). The pre-dust removal structure separates dust and impurities in the exhaust gas through the dust removal shell (11) to increase the subsequent combustion efficiency.

7. The safe and efficient combustion device for high-concentration spontaneously combustible and flammable mixed waste gas according to claim 6, characterized in that: The pre-dust removal structure includes a dust removal shell (11), the upper section of which is a cylindrical body and the lower section of which is a conical body. The lower end of the dust removal shell (11) is open. An air inlet pipe (12) is embedded and fixed on the side surface of the dust removal shell (11). A connecting pipe (13) is fixed through the upper surface of the dust removal shell (11). The air inlet pipe (12) and the connecting pipe (13) are tangentially aligned. The upper end of the connecting pipe (13) is inserted into the conveying chamber of the combustion shell (1). A conveying pipe (14) is fixed through the outer surface of the connecting pipe (13). The upper end of the conveying pipe (14) is inserted into the mixing chamber through the surface of the lower partition (3).

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