Tungdae Paper Black liquor is a clean fuel
2023-12-24 06:07:13
According to China's "Ninth Five-Year Plan" and the 2010 Vision, the key areas for the development of the environmental protection industry in the future will be urban sewage treatment equipment, air pollution control equipment, solid waste treatment, and environmental and ecological monitoring equipment, and water environmental protection and pollution. Governance, especially black liquor from straw pulping, is even more important.
In papermaking wastewater, black liquor is the most dangerous. Since the 1980s, China has always attached great importance to the prevention and control of papermaking black liquor and has carried out a large number of scientific and technological breakthroughs. After years of hard work, we have proposed a variety of technical routes, developed a lot of treatment chemicals and equipment, and also built a lot of demonstration projects. However, due to one-time investment and operating costs are too high, the black liquor pollution control has not been able to Satisfactory results.
A few days ago, the black liquor management problem of the papermaking industry for many years was solved by Yancheng Dongda Thermal Energy Machinery Manufacturing Co., Ltd., Jiangsu Province. It passed the low-cost treatment of papermaking black liquor and pumped it to boilers and other thermal equipment for atomization and combustion. The measured smoke is light and dust-free, and there is no secondary pollution.
According to experts, each ton of wheat straw must be dried, 2.5 tons of straw, 7.5 tons of water, and 300 kg of caustic soda must be added to the steamer. After several hours of cooking under high-temperature steam, the three major components of cellulose, lignin and hemicellulose in wheat straw were dissociated, of which only 40% of cellulose was sent to papermaking, and the remaining 60% of lignin and half were left. Cellulose was abandoned in black liquor. According to calculations, the calorific value per kilogram of papermaking black liquor ranges from 2200 kcal to 2400 kcal, which is almost half that of raw coal. After processing, it replaces coal, oil, gas, and other fuels on the boiler, which can help papermaking companies save money throughout the year. Fuel costs 1/2 or more. In addition, in addition to the savings of the original cost of papermaking black liquor, its economic benefits are extremely alarming.
It is understood that more than 13,000 original paper companies in China have shut down more than 6,000 due to pollution control and poor management. If black-slurry is reformed for thermal equipment such as boilers of paper-making companies, it can fundamentally solve the problems of black liquor management, reduce production costs, and can save the country hundreds of billions of investment in retroactive assets.
In papermaking wastewater, black liquor is the most dangerous. Since the 1980s, China has always attached great importance to the prevention and control of papermaking black liquor and has carried out a large number of scientific and technological breakthroughs. After years of hard work, we have proposed a variety of technical routes, developed a lot of treatment chemicals and equipment, and also built a lot of demonstration projects. However, due to one-time investment and operating costs are too high, the black liquor pollution control has not been able to Satisfactory results.
A few days ago, the black liquor management problem of the papermaking industry for many years was solved by Yancheng Dongda Thermal Energy Machinery Manufacturing Co., Ltd., Jiangsu Province. It passed the low-cost treatment of papermaking black liquor and pumped it to boilers and other thermal equipment for atomization and combustion. The measured smoke is light and dust-free, and there is no secondary pollution.
According to experts, each ton of wheat straw must be dried, 2.5 tons of straw, 7.5 tons of water, and 300 kg of caustic soda must be added to the steamer. After several hours of cooking under high-temperature steam, the three major components of cellulose, lignin and hemicellulose in wheat straw were dissociated, of which only 40% of cellulose was sent to papermaking, and the remaining 60% of lignin and half were left. Cellulose was abandoned in black liquor. According to calculations, the calorific value per kilogram of papermaking black liquor ranges from 2200 kcal to 2400 kcal, which is almost half that of raw coal. After processing, it replaces coal, oil, gas, and other fuels on the boiler, which can help papermaking companies save money throughout the year. Fuel costs 1/2 or more. In addition, in addition to the savings of the original cost of papermaking black liquor, its economic benefits are extremely alarming.
It is understood that more than 13,000 original paper companies in China have shut down more than 6,000 due to pollution control and poor management. If black-slurry is reformed for thermal equipment such as boilers of paper-making companies, it can fundamentally solve the problems of black liquor management, reduce production costs, and can save the country hundreds of billions of investment in retroactive assets.
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