1. Technology name: High infrared emissivity porous ceramic energy-saving burner technology
2. Technology fields and scope of application: various civil and commercial indoor and outdoor gas stoves, gas heaters, gas barbecues, gas water heaters and other products, food, coating, textile, shoe materials, wood processing, ceramics, metallurgy and other industrial heating, heating, drying, baking, boilers and other equipment
3. Current status of energy consumption and carbon emissions related to this technology
At present, metal materials such as copper, cast iron and alloys are generally used to manufacture stove burners. The mining, smelting, processing and transportation processes consume a lot of energy and cause pollution, and the cost is high; the thermal efficiency of embedded gas stoves prepared with this material is generally only slightly higher than 50%, and the energy utilization rate is low. The application of this technology can achieve energy savings of 140,000 tce/a and CO2 emissions reduction of about 360,000 t/a.
IV. Technical content
1. Technical principle
The burner is made of porous ceramics with high infrared emissivity instead of traditional energy-consuming scarce metal materials such as copper, iron-chromium-aluminum and nickel-chromium alloys; the fully premixed flameless combustion technology is used to transfer most of the heat generated by gas combustion to the heat receiving body in the form of infrared radiation. By adopting the fully premixed catalytic combustion technology, the air-fuel ratio is accurately controlled and the mixing is more uniform, which not only ensures more complete combustion and reduces the chemical heat loss caused by incomplete combustion, but also reduces the heat taken away by excess air, and can effectively inhibit the generation of carbon monoxide and nitrogen oxides. Through infrared radiation heat transfer, the combustion surface temperature is high and the transfer distance is short, which greatly reduces the physical heat loss in the heat transfer process. The burner surface adopts a high-emissivity infrared coating, and the infrared emission wavelength window of the coating is matched with the infrared absorption wavelength window of the heat receiving body as much as possible to further improve the heat absorption efficiency. The infrared flameless combustion technology is adopted, without open flames, which completely eliminates the root cause of carbon black generation and reduces the hidden danger of reduced thermal efficiency caused by carbon accumulation at the bottom of the pot.
2. Key technologies
(1) Clean production technology of infrared porous ceramics;
(2) Production and processing technology of high infrared emissivity and high temperature combustion catalytic dual-effect coatings;
(3) Flameless combustion technology of fully premixed gas;
(4) Safety protection technology to prevent accidental flameout and flashback.
3. Process flow
V. Main technical indicators
1. Average emissivity of infrared coating reaches 0.89;
2. CO concentration < 0.01%;
3. NOX concentration < 0.01%;
4. Thermal efficiency index of energy-saving stove > 65%;
5. Average life of porous ceramics > 12,000 hours, which can be used normally for 8 years.
VI. Technical appraisal, awards and application status
This technology has passed the technical achievement appraisal of the Guangdong Provincial Department of Science and Technology, and won the first prize of Guangdong Provincial Science and Technology Award and the first prize of Guangzhou Science and Technology Award. The product has obtained China Energy Conservation Certification and China Environmental Protection Certification. At present, high infrared emissivity porous ceramic energy-saving burners have been used in many domestic civilian stoves. According to incomplete statistics, the number of users exceeds 6.5 million, and the thermal efficiency of stoves can reach more than 65%, which is 15%-20% more energy-saving than traditional products. More than 2 million products are sold to foreign markets such as the United States, Canada and Europe each year.
VII. Typical application cases
Typical users: Shaanxi Provincial Personnel Department Family Quarters, Jiahe Community in Cangzhou City, Hebei Province, Jingdezhen Power Plant in Jiangxi Province, Fumin Community in Wuwei City, Gansu Province, Hujiayuan Community in Tianjin, Pingshan Yongheyuan New District in Henan Province, etc.
Typical case 1
Construction scale: 156 ordinary household gas stoves were transformed by community users. Main technical transformation content: ordinary household gas stoves were replaced with infrared porous ceramic energy-saving stoves. The investment in energy-saving technical transformation is 44,000 yuan, and the construction period is 1 month. It can save 12tce of energy per year, with an annual energy-saving economic benefit of 18,000 yuan and an investment recovery period of 2.5 years.
Typical case 2
Construction scale: 480 ordinary household gas stoves were replaced in the community. Main technical transformation content: ordinary household gas stoves were replaced with infrared porous ceramic energy-saving stoves. The investment in energy-saving technology transformation is 264,000 yuan, and the construction period is 25 days. It can save 61.3tce of energy per year, with an annual energy-saving economic benefit of 110,000 yuan and an investment payback period of 2.4 years.
VIII. Promotion prospects and energy-saving and emission reduction potential
According to rough statistics, the average daily gas consumption of domestic gas stoves (assuming that they all use natural gas) is 0.5 kg, and the national daily gas consumption reaches 93,000 tons. At present, the thermal efficiency of most household atmospheric stoves is about 50%, and the thermal efficiency of energy-saving stoves can reach more than 65%. According to market surveys, the current sales volume and user usage of energy-saving stoves in my country are not large. If promoted, gas stoves have great potential for energy conservation and emission reduction. It is estimated that in the next five years, the proportion of urban households using high infrared emissivity porous ceramic energy-saving burners in my country will be 30%, and the proportion of rural promotion and use will be 20%, which will save 1.02 million tons of natural gas per year, equivalent to 1.35 million tons of standard coal, and the annual emission reduction capacity will be about 3.56 million tons of CO2.
1. Technology name: High infrared emissivity porous ceramic energy-saving burner technology
2. Technology fields and scope of application: various civil and commercial indoor and outdoor gas stoves, gas heaters, gas barbecues, gas water heaters and other products, food, coating, textile, shoe materials, wood processing, ceramics, metallurgy and other industrial heating, heating, drying, baking, boilers and other equipment
3. Current status of energy consumption and carbon emissions related to this technology
At present, metal materials such as copper, cast iron and alloys are generally used to manufacture stove burners. The mining, smelting, processing and transportation processes consume a lot of energy and cause pollution, and the cost is high; the thermal efficiency of embedded gas stoves prepared with this material is generally only slightly higher than 50%, and the energy utilization rate is low. The application of this technology can achieve energy savings of 140,000 tce/a and CO2 emissions reduction of about 360,000 t/a.
IV. Technical content
1. Technical principle
The burner is made of porous ceramics with high infrared emissivity instead of traditional energy-consuming scarce metal materials such as copper, iron-chromium-aluminum and nickel-chromium alloys; the fully premixed flameless combustion technology is used to transfer most of the heat generated by gas combustion to the heat receiving body in the form of infrared radiation. By adopting the fully premixed catalytic combustion technology, the air-fuel ratio is accurately controlled and the mixing is more uniform, which not only ensures more complete combustion and reduces the chemical heat loss caused by incomplete combustion, but also reduces the heat taken away by excess air, and can effectively inhibit the generation of carbon monoxide and nitrogen oxides. Through infrared radiation heat transfer, the combustion surface temperature is high and the transfer distance is short, which greatly reduces the physical heat loss in the heat transfer process. The burner surface adopts a high-emissivity infrared coating, and the infrared emission wavelength window of the coating is matched with the infrared absorption wavelength window of the heat receiving body as much as possible to further improve the heat absorption efficiency. The infrared flameless combustion technology is adopted, without open flames, which completely eliminates the root cause of carbon black generation and reduces the hidden danger of reduced thermal efficiency caused by carbon accumulation at the bottom of the pot.
2. Key technologies
(1) Clean production technology of infrared porous ceramics;
(2) Production and processing technology of high infrared emissivity and high temperature combustion catalytic dual-effect coatings;
(3) Flameless combustion technology of fully premixed gas;
(4) Safety protection technology to prevent accidental flameout and flashback.
3. Process flow
V. Main technical indicators
1. Average emissivity of infrared coating reaches 0.89;
2. CO concentration < 0.01%;
3. NOX concentration < 0.01%;
4. Thermal efficiency index of energy-saving stove > 65%;
5. Average life of porous ceramics > 12,000 hours, which can be used normally for 8 years.
VI. Technical appraisal, awards and application status
This technology has passed the technical achievement appraisal of the Guangdong Provincial Department of Science and Technology, and won the first prize of Guangdong Provincial Science and Technology Award and the first prize of Guangzhou Science and Technology Award. The product has obtained China Energy Conservation Certification and China Environmental Protection Certification. At present, high infrared emissivity porous ceramic energy-saving burners have been used in many domestic civilian stoves. According to incomplete statistics, the number of users exceeds 6.5 million, and the thermal efficiency of stoves can reach more than 65%, which is 15%-20% more energy-saving than traditional products. More than 2 million products are sold to foreign markets such as the United States, Canada and Europe each year.
VII. Typical application cases
Typical users: Shaanxi Provincial Personnel Department Family Quarters, Jiahe Community in Cangzhou City, Hebei Province, Jingdezhen Power Plant in Jiangxi Province, Fumin Community in Wuwei City, Gansu Province, Hujiayuan Community in Tianjin, Pingshan Yongheyuan New District in Henan Province, etc.
Typical case 1
Construction scale: 156 ordinary household gas stoves were transformed by community users. Main technical transformation content: ordinary household gas stoves were replaced with infrared porous ceramic energy-saving stoves. The investment in energy-saving technical transformation is 44,000 yuan, and the construction period is 1 month. It can save 12tce of energy per year, with an annual energy-saving economic benefit of 18,000 yuan and an investment recovery period of 2.5 years.
Typical case 2
Construction scale: 480 ordinary household gas stoves were replaced in the community. Main technical transformation content: ordinary household gas stoves were replaced with infrared porous ceramic energy-saving stoves. The investment in energy-saving technology transformation is 264,000 yuan, and the construction period is 25 days. It can save 61.3tce of energy per year, with an annual energy-saving economic benefit of 110,000 yuan and an investment payback period of 2.4 years.
VIII. Promotion prospects and energy-saving and emission reduction potential
According to rough statistics, the average daily gas consumption of domestic gas stoves (assuming that they all use natural gas) is 0.5 kg, and the national daily gas consumption reaches 93,000 tons. At present, the thermal efficiency of most household atmospheric stoves is about 50%, and the thermal efficiency of energy-saving stoves can reach more than 65%. According to market surveys, the current sales volume and user usage of energy-saving stoves in my country are not large. If promoted, gas stoves have great potential for energy conservation and emission reduction. It is estimated that in the next five years, the proportion of urban households using high infrared emissivity porous ceramic energy-saving burners in my country will be 30%, and the proportion of rural promotion and use will be 20%, which will save 1.02 million tons of natural gas per year, equivalent to 1.35 million tons of standard coal, and the annual emission reduction capacity will be about 3.56 million tons of CO2.