Carbon Black Industry Relying On Technology
Previously mentioned carbon black production, people would often associated with high pollution, high energy consumption such words. However, the current domestic consumption of carbon black produced an average of only t: 380 kwh electricity, water, 5 tons, steam 1.4 tons, 231 kilograms of standard coal conversion, while exhaust gas power generation has also become a common operation for most enterprises. Carbon black industry is no longer people think of high pollution, high energy-consuming industries.
In the past, due to backward technology, coupled with carbon black feedstock consumed in large, carbon black industry, once considered a high-pollution industries with high energy consumption. As the century 80 years ago, a single furnace production capacity of 2000 to 3,000 tons of small, big, only 5,000 tons. At that time production of 1 ton of carbon black feedstock consumed by more than 3 tons. As the process backward, there is no bag filter installation, dust pollution, large, workers tend to become white shirt black shirt, and the surrounding trees were blackened. From the mid-80s, the gradual introduction of new technology of carbon black business-ton furnace, plus bag filter device, and use exhaust gas power generation, so that the oil consumption of raw materials fell to 1.8 to 2.0 tons.
Using wet granulation carbon black carbon black can improve the collection system, the use and expansion of high-quality fiber glass needle felt glass fiber yarn body bag, so that filtration efficiency is 99.5% ~ 99.8%, carbon black dust content control at 18 mg / cubic meters within the chimney to take white smoke that is Ringelmann blackness below the level. To this end, the late 90s, carbon black industry, proposed the elimination million tons below the furnace, change dry to wet granulation granulation slogans. However, in 2002, there is pollution in China’s carbon black, process behind the 1 million ton / year of carbon black under dry granulation is also accounted for more than half.
With the company in recent years, awareness of environmental protection, the carbon black carbon black business in the new device commonly used by a single-furnace high-volume, wet granulation methods, dry granulation of carbon black production plant is now basically eliminated, 1.5 tons of furnace fuel oil consumption has dropped to below 1.8 tons. Ton of carbon black industry, the past two years, new technology devices and carbon black production capacity of a single reactor rapid increase in the size of the new company’s existing production line and one-way capacity of carbon black production lines basically at 2 million ton / year to 4 million ton / year . Large-scale device not only greatly enhanced carbon black fuel oil combustion, pyrolysis reaction process, improve product quality, increasing product variety, but also significantly reduce the unit consumption of the product, carbon black industry, oil the unit consumption of raw materials-scale enterprises than two years ago reduced by 10%.
Today, many enterprises in the expansion of carbon black carbon black production capacity at the same time, have increased the tail gas generating capacity, the association member companies, 5 million ton / year or more enterprises have a total generating capacity of 18 million kilowatts, the whole could be generating about 1.44 billion kwh, folding 177 thousand tons of standard coal. Many businesses owned station, apart from meeting the production, power consumption, but also to the regional power grid, or other units, an increase of economic efficiency of enterprises.
In addition, many companies have increased carbon black key equipment – air preheater temperature of carbon black in improving yield, reducing the oil consumption of raw materials, it is also enhanced reaction conditions, a decrease of acute cold water sprayed into the volume, improve the of the exhaust heat value, an increase of exhaust gas boiler combustion stability. New Star of 2005 by Shijiazhuang Carbon Co., Ltd. 950 ℃ the first to use ultra-high temperature air preheater, and then, Shanxi Zhixin Chemical Co., Ltd., Shanxi founders Chemical Co., Ltd., Shanxi Hengda Chemical Co., Ltd., Shandong Huadong Rubber Material Co., Ltd. and many other companies are being progressively installed in 800 ℃ -950 ℃ high temperature air preheater, have achieved good operating results.
Now, carbon black oil products is the use of raw materials used in the production of ethylene by-products and production of coke, coal chemical by-products as raw materials to produce carbon black product is coal and oil industry, the Department of circular economy an important part of the chain as a carbon black production of the raw materials used in the energy consumption of oil should not be an assessment of energy conversion between them, rather than as costs. Carbon black industry is coking industry and the coal chemical industry and petrochemical industry, an important part of the chain, becoming transformed into low-value-added products with higher value-added tires, rubber reinforcing agent indispensable materials important industry.
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