Low-heat-value low-nitrogen combustor
By premixing low-calorie gas and air in the burner and using the swirl nozzle structure, the problem that existing burners are difficult to reduce the nitrogen oxide generation and combustion temperature is solved, and the full combustion of the gas and low nitrogen emissions are achieved.
Patent Information
- Application Number
- CN202421158729.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
It is difficult for existing burners to reduce the amount of nitrogen oxides, and at the same time it is difficult to reduce the combustion temperature in the center of the burner nozzle.
A low-calorie value low-nitrogen burner is designed to achieve full combustion of fuel and effective temperature control by premixing low-calorie value gas and air in the central pipeline, and using a combined structure of combustion-assisted air cyclone nozzle and gas cyclone nozzle. .
The sufficient combustion of low-calorie gas is achieved, while the amount of nitrogen oxides is reduced, and the emission of nitrogen oxides is reduced by reducing the combustion temperature.
Smart Images
Figure CN222480492U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of burners, in particular to a low calorific value and low nitrogen burner. Background Art
[0002] At present, some low calorific value gas is produced in the production process of chemical industry, petroleum industry and steel industry. This gas has few combustible components, low calorific value, and requires a high ignition temperature. Combustion at too high a temperature will produce more nitrogen oxides, which will eventually be discharged into the atmosphere through subsequent devices, causing impacts on the atmosphere.
[0003] However, in the prior art, the burner cannot reduce the amount of nitrogen oxides generated, and it is difficult to reduce the combustion temperature at the center of the burner nozzle. Utility Model Content
[0004] The utility model aims to provide a low calorific value and low nitrogen burner, aiming to solve the technical problems that the burners in the prior art cannot reduce the amount of nitrogen oxides generated and it is difficult to reduce the combustion temperature at the center of the burner nozzle.
[0005] To achieve the above-mentioned purpose, the utility model adopts a low calorific value and low nitrogen burner, including a gas pipeline, a center pipeline, a combustion-supporting pipeline, a gas installation panel, a guide tube and a mounting flange. The gas installation panel is fixedly connected to the combustion-supporting pipeline and is located on one side of the combustion-supporting pipeline. The gas pipeline runs through the gas installation panel. The center pipeline is fixedly connected to the gas pipeline, and one end of the center pipeline is embedded in the interior of the gas pipeline. The guide tube is fixedly connected to the combustion-supporting pipeline and is located at one end of the combustion-supporting pipeline. The mounting flange is fixedly connected to the combustion-supporting pipeline and is sleeved on the outer wall of the combustion-supporting pipeline.
[0006] Among them, the combustion-supporting pipeline includes a combustion-supporting air inlet pipe, a combustion-supporting air channel and a combustion-supporting air swirl nozzle. The combustion-supporting air channel is connected to the combustion-supporting air inlet pipe and is located on the outer side of the combustion-supporting air inlet pipe. The combustion-supporting air swirl nozzle is fixedly connected to the combustion-supporting air channel and embedded in the inner side of the combustion-supporting air channel. The combustion-supporting air swirl nozzle is located between the combustion-supporting air channel and the gas pipeline.
[0007] Among them, the gas pipeline includes a gas channel, a gas swirl nozzle and a gas direct current nozzle. The gas channel runs through the combustion-supporting air inlet pipe and is placed inside the combustion-supporting air channel, and the gas channel is located on the inner side of the combustion-supporting air swirl nozzle. The gas swirl nozzle is fixedly connected to the gas channel and embedded in the inner side of the gas channel. The gas direct current nozzle is fixedly connected to the gas swirl nozzle and embedded in the inner side of the gas direct current nozzle.
[0008] Among them, the central pipeline includes a central air inlet pipe, a central connecting pipe, a central channel, an ignition gun channel and a central channel swirl nozzle. The central air inlet pipe is connected to the combustion-supporting air inlet pipe and is located on the outer wall of the combustion-supporting air inlet pipe. The central channel is arranged inside the gas channel, and one end of the central channel is embedded in the inner side of the gas straight flow spray hole. The two ends of the central connecting pipe are respectively connected to the gas channel and the central channel. The ignition gun channel is fixedly connected to the central channel and embedded in the inner side of the central channel. The central channel swirl nozzle is arranged at one end of the central channel and is located on one side of the ignition gun channel.
[0009] The beneficial effects of a low calorific value and low nitrogen burner of the utility model are: it can fully burn low calorific value gas while reducing the generation of nitrogen oxides, and premix the low calorific value gas with air through the central channel to make ignition easier. The central channel can reduce the combustion temperature at the center of the burner nozzle, effectively reducing the generation and emission of nitrogen oxides. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0011] Figure 1 It is a structural schematic diagram of a low calorific value and low nitrogen burner of the utility model.
[0012] 1-combustion-supporting air inlet pipe, 2-combustion-supporting air channel, 3-combustion-supporting air swirl nozzle, 4-gas installation panel, 5-guide tube, 6-installation flange, 7-gas channel, 8-gas swirl nozzle, 9-gas direct current nozzle, 10-center air inlet pipe, 11-center connecting pipe, 12-center channel, 13-ignition gun channel, 14-center channel swirl nozzle. DETAILED DESCRIPTION
[0013] See also Figure 1The utility model provides a low calorific value and low nitrogen burner, including a gas pipeline, a central pipeline, a combustion-supporting pipeline, a gas installation panel 4, a guide tube 5 and a mounting flange 6. The gas installation panel 4 is fixedly connected to the combustion-supporting pipeline and is located on one side of the combustion-supporting pipeline. The gas pipeline runs through the gas installation panel 4. The central pipeline is fixedly connected to the gas pipeline, and one end of the central pipeline is embedded in the interior of the gas pipeline. The guide tube 5 is fixedly connected to the combustion-supporting pipeline and is located at one end of the combustion-supporting pipeline. The mounting flange 6 is fixedly connected to the combustion-supporting pipeline and is sleeved on the outer wall of the combustion-supporting pipeline.
[0014] Furthermore, the combustion-supporting pipeline includes a combustion-supporting air inlet pipe 1, a combustion-supporting air channel 2 and a combustion-supporting air swirl nozzle 3. The combustion-supporting air channel 2 is connected to the combustion-supporting air inlet pipe 1 and is located on the outer side of the combustion-supporting air inlet pipe 1. The combustion-supporting air swirl nozzle 3 is fixedly connected to the combustion-supporting air channel 2 and embedded in the inner side of the combustion-supporting air channel 2. The combustion-supporting air swirl nozzle 3 is located between the combustion-supporting air channel 2 and the gas pipeline.
[0015] Furthermore, the gas pipeline includes a gas channel 7, a gas swirl nozzle 8 and a gas direct current nozzle 9. The gas channel 7 runs through the combustion-supporting air inlet pipe 1 and is placed inside the combustion-supporting air channel 2, and the gas channel 7 is located on the inner side of the combustion-supporting air swirl nozzle 3. The gas swirl nozzle 8 is fixedly connected to the gas channel 7 and embedded in the inner side of the gas channel 7. The gas direct current nozzle 9 is fixedly connected to the gas swirl nozzle 8 and embedded in the inner side of the gas direct current nozzle 9.
[0016] Furthermore, the central pipeline includes a central air inlet pipe 10, a central connecting pipe 11, a central channel 12, an ignition gun channel 13 and a central channel swirl nozzle 14. The central air inlet pipe 10 is connected to the combustion-supporting air inlet pipe 1 and is located on the outer wall of the combustion-supporting air inlet pipe 1. The central channel 12 is arranged inside the gas channel 7, and one end of the central channel 12 is embedded in the inner side of the gas direct current spray hole. The two ends of the central connecting pipe 11 are respectively connected to the gas channel 7 and the central channel 12. The ignition gun channel 13 is fixedly connected to the central channel 12 and embedded in the inner side of the central channel 12. The central channel swirl nozzle 14 is arranged at one end of the central channel 12 and is located on one side of the ignition gun channel 13.
[0017] In this embodiment, the low calorific value and low nitrogen burner is installed and fixed by the mounting flange 6, the blower is started, and the air enters the combustion-supporting air inlet pipe 1 into the combustion-supporting air channel 2 and the central air inlet pipe 10, the ignition gun channel 13 is externally connected to the fuel gas ignition gun pipeline, the ignition gun is started to ignite, the fuel valve is opened, the fuel enters through the central channel 12 and the fuel channel, the fuel is discharged from the fuel channel through the gas swirl nozzle 8 and the gas direct current nozzle 9, and the combustion-supporting air passes through the combustion-supporting air channel 2 and The combustion-supporting air swirl nozzle 3 is ejected to wrap the ejection end of the fuel. In the central channel 12, the combustion-supporting air is mixed with the fuel and ejected through the central channel 12 and the central channel swirl nozzle 14, so that the fuel gas burns in the furnace until the flue gas temperature at the furnace outlet reaches 1250°C. The emission of nitrogen oxides can be reduced by matching the ratio of fuel gas and combustion-supporting air. The low calorific value fuel gas is mixed with air in the central pipe, which makes ignition easier and can reduce the combustion temperature at the outlet of the central channel 12.
[0018] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.
Claims
1. A low calorific value and low nitrogen burner, characterized in that: It includes a gas pipeline, a center pipeline, a combustion-supporting pipeline, a gas installation panel, a guide tube and a mounting flange. The gas installation panel is fixedly connected to the combustion-supporting pipeline and is located on one side of the combustion-supporting pipeline. The gas pipeline runs through the gas installation panel. The center pipeline is fixedly connected to the gas pipeline, and one end of the center pipeline is embedded in the interior of the gas pipeline. The guide tube is fixedly connected to the combustion-supporting pipeline and is located at one end of the combustion-supporting pipeline. The mounting flange is fixedly connected to the combustion-supporting pipeline and is sleeved on the outer wall of the combustion-supporting pipeline.
2. A low calorific value, low nitrogen burner as claimed in claim 1, characterized in that: The combustion-supporting pipeline includes a combustion-supporting air inlet pipe, a combustion-supporting air channel and a combustion-supporting air swirl nozzle. The combustion-supporting air channel is connected to the combustion-supporting air inlet pipe and is located on the outer side of the combustion-supporting air inlet pipe. The combustion-supporting air swirl nozzle is fixedly connected to the combustion-supporting air channel and embedded in the inner side of the combustion-supporting air channel. The combustion-supporting air swirl nozzle is located between the combustion-supporting air channel and the gas pipeline.
3. A low calorific value, low nitrogen burner as claimed in claim 2, characterized in that: The gas pipeline includes a gas channel, a gas swirl nozzle and a gas direct current nozzle. The gas channel runs through the combustion-supporting air inlet pipe and is placed inside the combustion-supporting air channel, and the gas channel is located on the inner side of the combustion-supporting air swirl nozzle. The gas swirl nozzle is fixedly connected to the gas channel and embedded in the inner side of the gas channel. The gas direct current nozzle is fixedly connected to the gas swirl nozzle and embedded in the inner side of the gas direct current nozzle.
4. A low calorific value, low nitrogen burner as claimed in claim 3, characterized in that: The central pipeline includes a central air inlet pipe, a central connecting pipe, a central channel, an ignition gun channel and a central channel swirl nozzle. The central air inlet pipe is connected to the combustion-supporting air inlet pipe and is located on the outer wall of the combustion-supporting air inlet pipe. The central channel is arranged inside the gas channel, and one end of the central channel is embedded in the inner side of the gas straight flow spray hole. The two ends of the central connecting pipe are respectively connected to the gas channel and the central channel. The ignition gun channel is fixedly connected to the central channel and embedded in the inner side of the central channel. The central channel swirl nozzle is arranged at one end of the central channel and is located on one side of the ignition gun channel.