The external oxygen nozzle in the coal chemical gasification furnace is a kind of equipment used for flue gas purification processes such as flue gas desulfurization and denitrification. With the continuous improvement of environmental protection requirements, coal chemical enterprises need to carry out stricter control and treatment of flue gas emissions. In this context, a new type of external oxygen nozzle came into being.
The traditional external oxygen nozzle is usually a direct injection type, that is, the oxygen is directly injected into the flue gas for reaction. The problem with this method is that the distribution of oxygen is uneven, which may easily lead to insufficient oxidation of some components in the flue gas, thereby affecting the purification effect. In order to solve this problem, some new external oxygen nozzles have been proposed and applied in coal chemical gasification furnaces.
The new external oxygen nozzle adopts a porous plate structure, which sprays oxygen into the flue gas evenly, and realizes the uniform distribution of the gas through the small holes on the surface of the porous plate. In this way, various components in the flue gas can be fully oxidized, thereby improving the efficiency and purification effect of desulfurization and denitrification. In addition, the perforated plate type external oxygen nozzle also has the advantages of high oxygen utilization rate, fast response speed and stable operation.
In addition, the new type of external oxygen nozzle can also be designed and adjusted according to the actual situation. For example, the amount and position of oxygen injection can be adjusted according to the change of flue gas flow and composition, so as to achieve the best purification effect. In addition, the new external oxygen nozzle can also be made of different materials, such as ceramics, corrosion-resistant alloys, etc., to meet different process requirements and application environments.
In short, the application of the new type of external oxygen nozzle in the coal chemical gasification furnace can improve the purification efficiency and environmental protection performance of the flue gas, which is of great significance for ensuring the safety of the production environment and the sustainable development of the ecological environment. With the continuous advancement of science and technology, the design and performance of the new external oxygen nozzle are also constantly optimized and improved, and it is expected to be more widely used in coal chemical industry and other fields in the future.
What are the materials of the new external oxygen nozzle?
The material of the new external oxygen nozzle can be selected according to different process requirements and application environment. Generally speaking, it needs to have the following characteristics:
1. High temperature resistance performance: The new type of external oxygen nozzle needs to work in a high temperature environment, so it needs to have better high temperature resistance performance to ensure its long-term stable work.
2. Corrosion resistance: The flue gas in the coal chemical gasification furnace contains a large amount of corrosive components, so the external oxygen nozzle needs to have a certain corrosion resistance to prevent it from being corroded by the flue gas and causing the flue gas purification effect to decline.
3. Good oxygen transfer performance: The new external oxygen nozzle needs to have good oxygen transfer performance to ensure that oxygen can be evenly distributed into the flue gas, thereby improving the flue gas purification efficiency.
Common new external oxygen sprinkler materials include:
1. Ceramic material: Ceramic material has good high temperature resistance and corrosion resistance, and also has good oxygen transmission performance, so it has been widely used in external oxygen nozzles.
2. Corrosion-resistant alloy materials: Corrosion-resistant alloy materials have good corrosion resistance and can be used in environments with strong flue gas corrosiveness, but their oxygen transfer performance is generally poor.
3. Stainless steel material: Stainless steel material has certain high temperature resistance and corrosion resistance, but its oxygen transmission performance is relatively poor.
4. Other materials: Other materials can also be selected according to specific process requirements and application environments, such as high-temperature alloys, ceramic composite materials, etc.
In short, the material selection of the new external oxygen nozzle needs to fully consider its durability and transmission performance under high temperature, high pressure and corrosive environment, so as to ensure that it can work stably and meet the actual needs in the production process. Different materials have their own advantages and disadvantages, which need to be selected and compared according to the actual situation in order to achieve the best effect and economy.
Under different process requirements and application environments, how to choose suitable materials?
Choosing the right material requires consideration of the following factors:
1. Process requirements: Different process requirements require selection of different materials. For example, for high-temperature and high-pressure processes, it is necessary to select materials that can withstand high temperature and high pressure; for highly corrosive processes, it is necessary to select materials with good corrosion resistance.
2. Application environment: Different application environments also need to choose different materials. For example, for outdoor environments, materials that can resist oxidation and corrosion need to be selected; for indoor environments, materials that meet hygienic standards need to be selected.
3. Economy: The balance between cost and performance needs to be considered when selecting materials. Some high-performance materials have a higher cost, while some common materials have a lower cost, which needs to be compared and selected according to the actual situation.
For example, for a new type of external oxygen nozzle in a coal chemical gasification furnace, it is necessary to select a material that can withstand high temperature, high pressure and corrosion resistance. In general, the following materials can be selected:
1. Ceramic material: Ceramic material has good high temperature resistance and corrosion resistance, and also has good oxygen transmission performance, so it has been widely used in external oxygen nozzles.
2. Corrosion-resistant alloy materials: Corrosion-resistant alloy materials have good corrosion resistance and can be used in environments with strong flue gas corrosiveness, but their oxygen transfer performance is generally poor.
3. Titanium alloy material: Titanium alloy material has good corrosion resistance and high strength, and at the same time has low density and good processing performance, so it has also been widely used in some applications with high temperature, high pressure and strong corrosion application.
When selecting materials, it is necessary to analyze and compare according to the actual situation, and comprehensively consider factors such as its durability, transfer performance, cost and application environment, in order to choose the most suitable material. At the same time, it is also necessary to pay attention to the source and quality of materials, and choose reliable suppliers and manufacturers to ensure the quality and reliability of materials.
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Post time: Aug-26-2023
