Sludge gasification combustible gas combustion device

Abstract

The invention relates to the technical field of sludge gasification incineration equipment, and particularly discloses a sludge gasification combustible gas combustion device which comprises a combustion nozzle, a gas main pipe, a gas supplementing pipe and an igniter. The two ends, in the length direction of the gas main pipe, of the gas main pipe are a first gas inlet end and a first gas outlet end correspondingly; the first gas inlet end is used for receiving combustible gas, the first gas outlet end extends into the burner, the gas supplementing pipe is used for blowing air into the main gas pipe, the igniter is provided with an ignition end, the ignition end is arranged in the burner and used for igniting the mixed air and combustible gas, and the igniter is located on the downstream of the first gas outlet end in the conveying direction of the combustible gas. According to the arrangement, the air supplementing pipe is introduced to blow air into the high-temperature combustible gas in the gas main pipe, the high-temperature combustible gas is cooled and fully mixed with oxygen in the air, and then the mixture is ignited by the igniter outside the first gas outlet end, so that the concentration of the oxygen in the combustible gas is effectively improved, and the combustion efficiency and sufficiency of the combustible gas are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge gasification incineration equipment, and particularly relates to a sludge gasification combustible gas combustion device. BACKGROUND

[0002] Sludge gasification is a treatment method for converting organic matter in sludge into combustible gas (such as synthesis gas, mainly composed of carbon monoxide, hydrogen, methane, etc.) and solid residue under high temperature (usually 500-1000 DEG C) and oxygen deficiency or limited oxygen conditions through thermochemical conversion technology, and its core principle is to decompose organic matter in sludge into small molecule gas through partial oxidation or pyrolysis reaction, and realize reduction, harmlessness and energy recovery. However, under high temperature environment, due to insufficient oxygen, uneven temperature distribution, insufficient mixing, and combustion product retention, the combustible gas generated by sludge gasification is prone to incomplete combustion, which affects the combustion efficiency and completeness to some extent.

[0003] Therefore, there is an urgent need for a sludge gasification combustible gas combustion device to solve the above problems. SUMMARY

[0004] The present application aims to provide a sludge gasification combustible gas combustion device, which can effectively improve the combustion efficiency and completeness of sludge gasification combustible gas.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] The present application provides a sludge gasification combustible gas combustion device, comprising:

[0007] A combustion nozzle;

[0008] A gas main pipe, the two ends of the gas main pipe along the length direction of the gas main pipe are respectively a first gas inlet end and a first gas outlet end, the first gas inlet end is used for receiving combustible gas, and the first gas outlet end extends into the combustion nozzle;

[0009] A gas supplement pipe, the gas supplement pipe is used for blowing air into the gas main pipe;

[0010] An igniter, the igniter has an ignition end, the ignition end is arranged in the combustion nozzle, and the ignition end is used for igniting mixed air and combustible gas, and the igniter is located downstream of the first gas outlet end along the conveying direction of the combustible gas.

[0011] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the gas supply pipe includes an inner pipe and an outer pipe. The two ends of the inner pipe along its own length direction are a second air inlet and a second air outlet, respectively. The second air inlet is used to receive air, and the second air outlet is used to supply air into the gas main pipe. The outer pipe is sleeved on the outside of the inner pipe to form a sandwich between the inner pipe and the outer pipe. The sludge gasification combustible combustion device also includes a heat insulation bushing, which is disposed in the sandwich.

[0012] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the outer wall of the second gas outlet is provided with a screen structure, the screen structure including a plurality of through holes distributed in a ring array.

[0013] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the inner pipe and the outer pipe are arranged coaxially.

[0014] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the first gas outlet end has a funnel-shaped flared structure, and the inner diameter of the funnel-shaped flared structure gradually increases along the conveying direction of the combustible gas.

[0015] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the outer wall of the trumpet-shaped flared structure is provided with multiple sieve holes.

[0016] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the igniter adopts electronic ignition and continuously maintains an open flame state.

[0017] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the sludge gasification combustible combustion device further includes a thermocouple and a control system, wherein the thermocouple is used to monitor the flame temperature in real time and feed it back to the control system.

[0018] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the burner is provided with a combustion chamber and a converging port, the converging port is connected to the combustion chamber, and the inner diameter of the converging port gradually decreases along the delivery direction of the combustible gas. The igniter is disposed between the first gas outlet end and the converging port.

[0019] As a preferred technical solution of the above-mentioned sludge gasification combustible combustion device, the inner wall of the combustion chamber is coated with a high-temperature resistant catalytic coating.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention provides a sludge gasification combustible combustion device, comprising: a burner, a gas main pipe, a make-up air pipe, and an igniter. The gas main pipe has a first inlet end and a first outlet end along its length, respectively. The first inlet end receives combustible gas, and the first outlet end extends into the burner. The make-up air pipe blows air into the gas main pipe. The igniter has an ignition end located inside the burner and is used to ignite the mixed air and combustible gas. The igniter is located downstream of the first outlet end along the combustible gas transport direction. This configuration allows air to be blown into the high-temperature combustible gas in the gas main pipe through the make-up air pipe. After cooling and thorough mixing with oxygen in the air, the air is ignited by the igniter outside the first outlet end, effectively increasing the oxygen concentration in the combustible gas and thus improving its combustion efficiency and completeness. Attached Figure Description

[0022] Figure 1 A schematic diagram of the sludge gasification combustible combustion device provided by the present invention.

[0023] in:

[0024] 1. Burner; 2. Gas main pipe; 3. Gas supply pipe; 4. Ignition device; 5. Through hole; 6. Screen hole. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0027] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0028] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, this embodiment provides a sludge gasification combustible combustion device, which includes: a burner 1, a gas main pipe 2, a make-up air pipe 3, and an igniter 4. The gas main pipe 2 has a first air inlet and a first air outlet at its two ends along its length. The first air inlet receives combustible gas, and the first air outlet extends into the burner 1. The make-up air pipe 3 blows air into the gas main pipe 2. The igniter 4 has an ignition end located inside the burner 1 and is used to ignite the mixed air and combustible gas. The igniter 4 is located downstream of the first air outlet along the combustible gas delivery direction. This configuration allows the make-up air pipe to blow air into the high-temperature combustible gas in the gas main pipe 2, causing the gas to cool and mix thoroughly with oxygen in the air before being ignited by the igniter 4 outside the first air outlet. This effectively increases the oxygen concentration in the combustible gas, thereby improving the combustion efficiency and completeness of the sludge gasification combustible gas. It should be noted that... Figure 1 The arrows shown indicate the direction of combustible gas delivery.

[0031] In this embodiment, the air supply pipe 3 includes an inner pipe and an outer pipe arranged coaxially. The inner pipe has a second air inlet and a second air outlet at its two ends along its length. The second air inlet is used to receive air, and the second air outlet is used to supply air into the gas main pipe 2. The outer pipe is sleeved outside the inner pipe, forming a sandwich between them. The sludge gasification combustible combustion device also includes a heat-insulating bushing, which is disposed within the sandwich. This design, with the air supply pipe 3 employing a sandwich structure and combined with the heat-insulating bushing, effectively isolates the high-temperature combustible gas and the high temperature generated during combustion from being conducted to the inner pipe, reducing heat loss. Simultaneously, it absorbs vibrations generated by gas flow and combustion, reducing vibration noise and ensuring the stability and reliability of air supply, thus providing a foundation for stable combustion.

[0032] Optionally, the outer wall of the second air outlet is provided with a screen structure, which includes multiple through holes 5 arranged in a ring array. This arrangement allows the screen structure to better draw in air, reduce the working resistance of the burner 1, achieve efficient air delivery, and enhance the uniformity of air intake, thereby improving the mixing effect.

[0033] Optionally, igniter 4 employs electronic ignition and maintains a continuous open flame. This configuration ensures stable combustion through continuous electronic ignition, preventing accidental extinguishing of the sludge gasification combustible gas due to unstable calorific value, thus improving safety and combustion efficiency. It should be noted that sludge gasification combustible gas often contains carbon monoxide, methane, etc., and its calorific value is greatly affected by the raw material composition and gasification efficiency. Traditional intermittent ignition is prone to extinguishing due to a sudden drop in calorific value, while continuous electronic ignition can directly reignite the low-calorific-value gas, avoiding the risk of explosion.

[0034] Optionally, the sludge gasification combustible combustion device also includes thermocouples and a control system. The thermocouples are used to monitor the flame temperature in real time and feed it back to the control system. When the temperature is lower than the threshold, the ignition power is automatically increased. The entire device uses a closed-loop intelligent adjustment based on temperature feedback to dynamically adapt to changes in the calorific value of the combustible gas, avoiding the risk of flameout due to monitoring lag. It also monitors the flame status in real time to prevent flameout due to fluctuations in combustible gas or external interference. This adds an intelligent monitoring and feedback mechanism to the "continuous open flame" system, forming an active safety protection closed loop, further improving the automation level and safety grade of the device, and creating multi-level protection.

[0035] Specifically, this embodiment provides the following technical solution: the burner 1 is provided with a combustion chamber and a convergence port, the convergence port is connected to the combustion chamber, and the inner diameter of the convergence port gradually decreases along the direction of combustible gas delivery. The igniter 4 is located between the first gas outlet and the convergence port.

[0036] Furthermore, the inner wall of the combustion chamber is coated with a high-temperature resistant combustion catalyst coating. This coating can be composed of magnesium oxide, aluminum silicate, inorganic materials, etc. It can effectively reduce the reaction free energy, allowing chemical reactions to occur at lower temperatures, promoting low-temperature combustion of combustible gas. Under the action of the catalyst, the combustion becomes more uniform, complete, and thorough, while reducing the dependence on igniter 4 and forming redundant protection with the continuous open flame, reducing the generation of incomplete combustion products.

[0037] Optionally, the first outlet end has a funnel-shaped flared structure, the inner diameter of which gradually increases along the direction of combustible gas delivery, and multiple sieve holes 6 are provided on the outer wall of the funnel-shaped flared structure. This configuration allows the funnel-shaped flared structure to guide airflow diffusion, reduce airflow resistance, and facilitate thorough mixing of combustible gas and air before entering the combustion chamber, thereby improving the mixing efficiency of air and combustible gas, as well as subsequent combustion efficiency.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A sludge gasification combustible gas combustion device characterized by comprising: The application relates to a sludge gasification combustible gas combustion device. The sludge gasification combustible gas combustion device comprises a combustion nozzle (1), a combustible gas main pipe (2), an air supplement pipe (3) and an igniter (4). The combustible gas main pipe (2) is provided with a first air inlet end and a first air outlet end at two ends along the length direction of the combustible gas main pipe (2), the first air inlet end is used for receiving combustible gas, and the first air outlet end extends into the combustion nozzle (1). The air supplement pipe (3) is used for supplying air into the combustible gas main pipe (2). The igniter (4) is provided with an ignition end, the ignition end is arranged in the combustion nozzle (1), and the ignition end is used for igniting mixed air and combustible gas, and the igniter (4) is located downstream of the first air outlet end along the conveying direction of the combustible gas.

2. The sludge gasification fuel gas combustion device according to claim 1, characterized by, The air supplement pipe (3) comprises an inner pipe and an outer pipe, the inner pipe is provided with a second air inlet end and a second air outlet end at two ends along the length direction of the inner pipe, the second air inlet end is used for receiving air, the second air outlet end is used for conveying air into the combustible gas main pipe (2), the outer pipe is arranged outside the inner pipe to form a sandwich layer between the inner pipe and the outer pipe, and the sludge gasification combustible gas combustion device further comprises a heat insulation sleeve arranged in the sandwich layer.

3. The combustible gas combustion apparatus according to claim 2, wherein An outer side wall of the second air outlet end is provided with a screen structure, and the screen structure comprises a plurality of through holes (5) arranged in an annular array.

4. The combustible gas combustion apparatus according to claim 2, wherein The inner pipe and the outer pipe are coaxially arranged.

5. The sludge gasification combustible gas combustion device according to claim 1, characterized by, The first air outlet end is in a trumpet-shaped flared structure, and the inner diameter of the trumpet-shaped flared structure gradually increases along the conveying direction of the combustible gas.

6. The sludge gasification fuel gas combustion device according to claim 5, characterized by A plurality of screen holes (6) are arranged on the outer side wall of the trumpet-shaped flared structure.

7. The combustible gas combustion apparatus for sludge gas according to any one of claims 1 to 6, characterized by The igniter (4) adopts electronic ignition and continuously maintains an open flame state.

8. The sludge gasification combustible gas combustion device according to claim 7, characterized by, The sludge gasification combustible gas combustion device further comprises a thermocouple and a control system, the thermocouple is used for monitoring the flame temperature in real time and feeding back to the control system.

9. The combustible gas combustion apparatus for sludge gas according to any one of claims 1 to 6, characterized by The combustion nozzle (1) is provided with a combustion chamber and a converging port, the converging port is communicated with the combustion chamber, the inner diameter of the converging port gradually decreases along the conveying direction of the combustible gas, and the igniter (4) is arranged between the first air outlet end and the converging port.

10. The sludge gasification combustible gas combustion device according to claim 9, characterized by, The inner wall of the combustion chamber is coated with a high-temperature-resistant catalytic coating.

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