Novel top burner for furnace top of reformer

Abstract

The utility model discloses a novel burner for the top of a reformer, which relates to the technical field of natural gas and chemical industry, solves the problem that the fuel gas quantity and the air quantity of the existing top burner are not metered and are not easy to adjust, and comprises a burner block and a burner body which can be fixed with the reformer, a main combustion gun and an auxiliary combustion gun are arranged on the combustor body; the main combustion gun is provided with a fuel distributor and is connected with a fixed flow device to limit the flow of fuel gas; the fixed flow device is used for limiting the amount of fuel gas entering the top combustor, the air amount is independently adjusted so that air-fuel mixed gas can be adjusted more easily, the problem that the fuel gas amount and the air amount of an original top combustor are not measured and are not easy to control is effectively solved, and the purpose that the combustor stably combusts is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas and chemical engineering, and particularly relates to a novel top burner for the top of a reforming furnace. Background Art

[0002] At present, reforming furnace technology is mostly adopted in the fields of natural gas and chemical engineering. A top burner is arranged at the top of the reforming furnace for heating the reforming tubes inside the reforming furnace to obtain reformed gas at the required temperature. The top burner adopts a self-priming air inlet or forced air inlet burner, and the reforming tubes in the furnace are heated by the mixed combustion of fuel gas and air.

[0003] The traditional adjustment of the top burner is to adjust the fuel gas through a globe valve, and a flap valve is arranged at the air inlet of the burner to adjust the air. Since neither the fuel gas nor the air is metered or restricted, the fuel gas and air are manually adjusted to cooperate in combustion. These two variables make it difficult to adjust the burner. Generally, the overall combustion suitability is judged by the flow rate of the fuel gas main pipe of multiple burners and the residual oxygen content at the flue gas outlet in combination with the temperature of the reforming furnace tubes, but the combustion state of a single burner cannot be specifically judged. Summary of the Invention

[0004] The purpose of the utility model is to solve the problem that the existing top burner is not easy to adjust because both the fuel gas and air need to be manually controlled. For example, adding single-flow control will lead to too many control points and a sharp increase in the single-unit investment cost. The utility model provides a novel top burner for the top of a reforming furnace.

[0005] The utility model specifically adopts the following technical solutions to achieve the above purpose: A novel top burner for the top of a reforming furnace includes a burner brick that can be fixedly communicated with the reforming furnace, which can meet the combustion air supply requirements while ensuring isolation of high temperature and stable flame. The upper part of the burner brick is provided with a burner body, and the burner body is provided with an adjusting handle to adjust the air intake; a main combustion gun is arranged at the center of the burner body, and multiple auxiliary combustion guns are arranged around it. The main combustion gun and the auxiliary combustion guns are connected by metal hoses; an ignition and observation port is arranged at the upper part of the burner body; the upper part of the main combustion gun is externally connected to a fuel distributor, a fixed flow device is externally connected above the fuel distributor, and a ball valve is arranged above the fixed flow device. The fuel gas enters through the ball valve, and the ball valve can open and close the fuel gas.

[0006] The burner body of the utility model is provided with a fuel gas inlet and an air inlet, which respectively supply fuel gas and air into the burner; during ignition, an ignition gun is inserted through the ignition port for ignition. After the ignition gun arcs, the fuel gas and air are adjusted through the fuel gas interface and the air interface, and are ignited and burned in the burner. After ignition, the ignition gun is taken out.

[0007] Preferably, a ball valve is provided at the fuel gas inlet of the burner body to open and close the fuel gas. After the fuel gas enters, it passes through a fixed flow device, which can limit the fuel gas flow rate to achieve the purpose of controlling the fuel gas flow rate of a single unit.

[0008] Preferably, the burner body is provided with an air inlet, and the air volume is manually adjusted through an adjusting handle.

[0009] Preferably, the burner body is provided with a fuel distributor to control the fuel gas flow rates entering the main combustion gun and the auxiliary combustion guns.

[0010] Preferably, the burner body is provided with a main combustion gun and multiple auxiliary combustion guns. By igniting the main combustion gun and then igniting the multiple auxiliary combustion guns, the purpose of controlling the combustion temperature can be achieved.

[0011] Preferably, an ignition and observation port is provided on the burner body. A glass sight glass is provided at the ignition and observation port to observe the flame. The sight glass can be disassembled to insert an ignition gun for ignition.

[0012] Preferably, the lower part of the burner body uses a burner brick that can be fixedly connected to the reformer to meet the combustion air supply requirements while ensuring high-temperature isolation.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. The top burner of the present utility model is provided with a fixed fuel gas flow device. Through this device, the fuel gas flow rate entering the burner can be effectively controlled, improving the situation where the fuel gas flow rate of traditional burners cannot be controlled. It changes the two adjustment quantities of fuel gas and air into one adjustment quantity of air, thereby achieving the purpose of optimized control;

[0015] 2. The present utility model is provided with a fuel distributor to effectively distribute the fuel flow rates of the main combustion gun and the auxiliary combustion guns, effectively controlling the temperatures in the main combustion area and the auxiliary combustion area, so as to meet the combustion temperature requirements while meeting the environmental protection index requirements;

[0016] 3. The burner body of the present utility model is provided with an ignition and observation port. A glass sight glass is provided at the ignition and observation port to observe the flame. The sight glass can be disassembled to insert an ignition gun for ignition. The observation port can observe the flame combustion situation at any time to ensure the safety of the equipment.

[0017] 4. The present utility model uses a burner brick cast with high-strength refractory materials at the lower part of the burner body to meet the combustion air supply requirements while ensuring high-temperature isolation, further protecting the safety of the equipment under high-temperature combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model.

[0019] Reference numerals: 1 - burner brick, 2 - auxiliary burner gun, 3 - ignition and observation port, 4 - metal hose, 5 - main combustion gun, 6 - fuel distributor, 7 - fixed flow device, 8 - ball valve, 9 - adjusting handle, 10 - burner brick, 11 - furnace top lining material. Detailed implementation mode

[0020] The following will give a detailed description of the embodiments of the present invention. Although the present invention will be described and illustrated in conjunction with some specific implementation modes, it should be noted that the present invention is not limited to these implementation modes only. On the contrary, any modifications or equivalent replacements made to the present invention shall be covered within the scope of the claims of the present invention.

[0021] In addition, in order to better illustrate the present invention, numerous specific details are given in the following detailed implementation modes. Those skilled in the art will understand that the present invention can also be implemented without these specific details.

[0022] Embodiment 1

[0023] As Figure 1 shown, the novel top burner for the furnace top of a reformer provided in this embodiment includes a burner brick 10 that can be fixedly connected to the reformer; a burner body 1 is provided above the burner brick 10, and the burner body 1 is provided with an adjusting handle 9, a main combustion gun 5, an auxiliary combustion gun 2, and an ignition and observation port 3; the main combustion gun 5 and the auxiliary combustion gun 2 are connected through a metal hose 4; the upper part of the main combustion gun 5 is externally connected to a fuel distributor 6, the upper part of the fuel distributor 6 is externally connected to a fixed flow device 7, and a ball valve 8 is arranged above the fixed flow device 7.

[0024] In this embodiment, the burner body 1 is supported by the burner brick 10, and the burner brick 10 is supported by the furnace top; the air required for combustion enters through the burner body 1 and is adjusted through the adjusting handle 9; the fuel gas required for combustion enters through the ball valve 8, and the flow rate is limited by the fixed flow device 7, and fuel is distributed to the main combustion gun 5 and the auxiliary combustion gun 2 through the fuel distributor 6; the main combustion gun 5 and the auxiliary combustion gun 2 are connected through a metal hose 4; the ignition and observation port 3 can be used for ignition and flame observation.

[0025] Working principle: The burner body 1 is provided with an ignition and observation port 3 connected to the ignition gun for inserting the ignition gun as an ignition source; the burner body 1 is configured to introduce fuel gas through a ball valve 8; the burner body 1 is provided with an air inlet for air intake; before ignition, the ball valve 8 is in the closed state and the adjustment handle 9 is in the open state; the ignition gun is inserted into the ignition and observation port 3 and arcs after approaching the lower spray hole of the main combustion gun 5. At the same time, the ball valve 8 is opened, and the ignition success is checked through other ignition and observation ports. If the ignition is unsuccessful, the ball valve 8 should be immediately closed, and after waiting for the furnace to be purged qualified, ignition is carried out again; after successful ignition, the total fuel gas flow rate of multiple burners is uniformly adjusted through the total fuel gas pipeline of the reforming furnace to meet the process requirements. Preferably, the opening degree of the adjustment handle 9 needs to be adjusted according to the flame condition to make the flame stable and meet the combustion temperature requirements.

[0026] Embodiment 2

[0027] As Figure 1 shown, this embodiment is further optimized on the basis of Embodiment 1. Specifically, after the ignition of multiple burners at the top of the reforming furnace is successful, the opening degree of the adjustment handle 9 of a single burner is first adjusted according to indicators such as the flame combustion condition, the required temperature of the reforming furnace, and the residual oxygen at the flue gas outlet. After adjusting to better indicators, the process requirements of the reforming furnace can be met by uniformly adjusting the furnace pressure and the fuel gas pressure, reducing the manual operation load.

[0028] The utility model mainly solves the problem that there is no measurement for both the fuel gas volume and the air volume of the existing top burners and it is not easy to adjust. The following are several core technologies and effects of this burner:

[0029] 1. Fixed flow device: By setting a fixed flow device on the upper part of the main combustion gun, the fuel gas flow rate entering the burner is effectively controlled. This technical means improves the situation that the fuel gas flow of traditional burners cannot be controlled, simplifies the two adjustment quantities of fuel gas and air to only adjust the air volume, and thus optimizes the combustion control process.

[0030] 2. Fuel distributor: The fuel distributor provided on the burner body can effectively control the fuel flow rates of the main combustion gun and the auxiliary combustion gun, thereby precisely controlling the temperatures of the main combustion area and the auxiliary combustion area. This not only meets the combustion temperature requirements but also meets the environmental protection index requirements.

[0031] 3. Ignition and observation port: The burner body is provided with an ignition and observation port and is equipped with a glass sight glass, enabling the operator to observe the flame combustion condition at any time to ensure the safety of the equipment. This design also facilitates the ignition process, and ignition can be achieved by inserting the ignition gun.

[0032] 4. Application of the burner brick: The lower part of the burner body uses a burner brick, which not only meets the demand for combustion air supply but also ensures high-temperature isolation, further protecting the safety of the equipment under high-temperature combustion conditions.

[0033] In summary, through the above technical means, the utility model effectively solves the problem that the fuel gas and air volume of the original top burner cannot be accurately controlled, improves the combustion efficiency and control accuracy, and at the same time enhances the safety and convenience of operation.

Claims

1. A novel top burner for a reforming furnace top, comprising a burner brick (10) which can be fixedly connected to the reforming furnace, characterized in that: A burner body (1) is provided on the upper part of the burner brick (10), and an adjustment handle (9) is provided on the burner body (1), and combustion air is adjusted by the adjustment handle (9); A main combustion gun (5) and an auxiliary combustion gun (2) are provided on the burner body (1), and the main combustion gun (5) and the auxiliary combustion gun (2) are connected via a metal hose (4); The upper part of the main combustion gun (5) is externally connected to a fuel distributor (6), the upper part of the fuel distributor (6) is externally connected to a fixed flow device (7), a ball valve (8) is arranged above the fixed flow device (7), and fuel gas enters through the ball valve (8).

2. A novel top burner for a reforming furnace top according to claim 1, characterized in that: The burner brick (10) supports the burner body (1) and is used for supplying air, isolating high temperature and stabilizing flame.

3. A novel top burner for a reforming furnace top according to claim 1, characterized in that: A main combustion gun (5) is arranged at the center of the burner body (1), and a plurality of auxiliary combustion guns (2) are arranged around the main combustion gun (5). The main combustion gun (5) and the auxiliary combustion guns (2) are connected via a metal hose (4).

4. A novel top burner for a reforming furnace top according to claim 1, characterized in that: The burner body (1) is provided with an ignition and observation port (3), and the ignition and observation ports are interchangeable.

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