Extending Chemical Reactions——A Report from China Bluestar to Build an Eco-symbiotic System
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While China's economy continues to grow at a high rate, it also brings two serious problems - huge consumption of resources and severe environmental pollution. In 2003, China’s carbon dioxide emissions exceeded 21 million tons, ranking first in the world and exceeding 33% of the environmental capacity. Chemical oxygen-consuming emissions exceeded 13 million tons, ranking first in the world and exceeding the environmental capacity of seven major river basins. %. China's smoke and dust emissions are 10.13 million tons, and industrial dust emissions are 9.41 million tons.
These shocking statistics show that if the Chinese economy continues to maintain sustained growth, Chinese companies must effectively adopt the feedback production process of “resources, products, and renewable resources†and the actual operation of “reduction-reuse-recyclingâ€. The principle of production, but also as the only "formula". China’s largest chemical material company, China National Bluestar (Group) Corporation, is using this formula. By taking the road of a conservation-oriented circular economy, it has achieved economic benefits while achieving social benefits. The vitality.
Instead of burning it, it is better to use it -- the only way for recycling companies to become a chemical company. The most notable feature of a petroleum and petrochemical refinery is that it has one or even several towering "torch lanterns" (refinery tail gas combustion systems). "Lighting the sky lanterns" - an hour to burn six or seven "great solidarity." In foreign countries, such chemical reactions have already achieved zero emissions. At present, China Bluestar Group Corporation can also allow this chemical reaction to extend. It has solved the problems that have long plagued China in this respect from the transformation of equipment and the remanufacturing of technology. As China's largest poly-carbon-grade bisphenol A and epoxy resin manufacturer --- China Bluestar Wuxi Resin Factory, after its 18-year "burning sky lanterns" with its oil refinery equipment undergoing technological research, this year It was finally extinguished completely and successfully.
The Bluestar Wuxi Resin Plant refinery was built in 1987. At the same time as the refinery was built, a 35-meter “torch†was specially built to handle the tail gas produced during the refinery process, but due to burning The temperature is relatively low, some organic matter is not completely decomposed, causing pollution to the local environment. The "torch" has become the focus of complaints from local residents. Bluestar Wuxi Resin Factory conducted an in-depth study. After many technical transformations failed to solve the fundamental problems, the plant changed its thinking and based on full investigation and demonstration, it carried out the “Torch†in three phases. Governance. First of all, starting in 2003, the “Torch†exhaust gas was introduced into a heat-conducting oil furnace, and the technical transformation of the BPA plant's oil-fired boiler equipment was carried out. The previously only diesel-burning equipment was transformed into oil and gas, and the tail gas by-product dry gas was used. The alternative to diesel fuel as a means to effectively reduce the "Torch" emissions, saving diesel energy costs more than 300 million. Secondly, the "Steam Oven" project was put into operation in February 2004. Full utilization of the exhaust gas from the refinery was carried out to reduce emissions of sulfur dioxide and prevent exhaust gas from passing through the flare burning. On the other hand, coal was reduced through reuse of exhaust gas. The amount of use, and the use of steam generated by the boiler has produced good economic benefits (annual production of more than 10,000 tons of steam, cost savings of more than 100 million), significantly reducing the amount of exhaust emissions. Once again, from January 2005, a new gas fractionation unit was used to further recover the active components in the refining tail gas for recycling, and the 35-meter-high “Torch†was successfully extinguished. This will solve the problem of pollutant treatment in the process. The circular economy, which created a profit in production, enabled the plant to enjoy the benefits of both economic and social benefits, and also relieved the worries of nearby residents.
Taking the road of sustainable development is the only way for chemical companies. The Bluestar Wuxi Plant is striving to improve the internal strength of emission control. It has conducted a series of bold and innovative technological innovations. At present, it has developed a new type of industrialization with high technological content, good economic returns, and resource-saving. After practice, the company further expanded the use of the waste and exhaust gas from the production plant to the serial exchange between the units and achieved remarkable results. They focus on the recovery of epichlorohydrin, the recovery of phenol from waste water containing phenols, the desulfurization and reformation of oily wastewater stripping, the addition of a toluene recovery unit and the use of waste materials, such as 15,000 tons/year of epoxy resin units, which can be recycled in one day. .78 tons of epichlorohydrin saves 1.18 million yuan of sewage treatment fee and 1.28 million yuan of material consumption in one year. Phenol recovery can generate economic benefits of 400,000 yuan per year and save 500,000 yuan in sewage treatment fees. This brings direct economic benefits to the company, lowers unit production costs, and achieves the purpose of waste recycling recycling. Participating in market competition provides a hardware environment.
Change the train of thought to create a symbiotic system --- The chemical industry will assume the important task of "Emissions in chemical production is not waste but renewable resources." Looking forward from the market, Blue Star Group, which is a world leader, sees forward, the chemical industry is To build a strong eco-symbiotic system, and always adhere to the concept of ecological production design first, Jiangxi Spark Industrial Park is a successful example of this idea. Located in Yongxiu County, Jiangxi Province, Jiangxi Xinghuo Industrial Park is a chemical industrial park jointly built by China National Bluestar Group Corporation and the Jiangxi Provincial Government. Lanxi Xinghuo Organic Silicon Plant is located in the park. It is the largest organic silicon producer in China. It ranks sixth in the world in terms of its production scale and has an existing production capacity of 100,000 tons. It has the first set of organic silicon production equipment independently developed by China.
At the beginning of its establishment, Spark Industrial Park took full consideration of the three aspects of the development, production, and waste recycling of organic silicon products. It carefully planned and found a construction “reduction-reuse-recyclingâ€. The rational solution of industrial ecological parks has given people a new understanding of the meaning of pollution through practice. Methyltrichlorosilane, a major by-product of silicones, is a kind of hydrogen chloride that burns, is extremely toxic, and releases harmful substances when it meets water. As a hazardous chemical, it has not been treated safely. At the beginning of this year, Cabot Bluestar invested 30 million US dollars in the establishment of a 4800 tons/year gas-phase white carbon black production facility at Xinghuo Industrial Park. This device can serve two purposes, not only absorbing and digesting more than 10,000 tons/year methyl Trichlorosilane by-products, while also producing nano-scale gas phase white carbon products that are popular in the market, have made it possible to solve safety and environmental concerns. The hydrogen chloride released during its production can be returned to the organic silicon plant for the synthesis of methyl chloride raw materials. Nowadays, 15 companies in the park have formed a close symbiotic relationship. Material integration, energy integration and information integration among enterprises have led to multiple recycling of wastes and waste residues from organic silicon plants. For example, Hubei Xinghua Chemical Co., Ltd. uses its waste residue to produce high-boiling silicone oil with an annual output value of more than 8 million yuan, forming a good economic benefit.
At present, there are concentrated supply of water, electricity, and gas in the Spark Park, and the park has invested more than 10 million yuan to build a sewage treatment plant with a treatment capacity of 200 cubic meters per hour for all enterprises, installed flue gas desulfurization and comprehensive utilization of solid waste, and centralized treatment equipment. The scale effect of energy use and waste treatment has been significantly improved. China's first organic silicon production base has embarked on a road to a healthy and cyclical eco-industrial park.
Wastewater treatment "smells" throughout the industry and outside --- New economic growth point for chemical companies Back in the early 1990s, when people defined water as inexhaustible, Bluestar Group Co., Ltd. Began to enter the field of water treatment to reduce the water crisis brought about by large quantities of industrial water. Bluestar Group Corporation established a special company for this purpose, carrying out technical and talent pools, and at the same time applying membrane technology to more than 1,000 large and small water treatment projects across the country. Such as Shougang Water Treatment Project, Minmetals Sewage Recycling Project, Henan Angang Sewage Treatment Project, Gansu Changqing Oilfield Bitter Water Desalination Project, Shijiazhuang Pharmaceutical Group, Sino-US Medical Ultra-pure Water Project, Taigang Water Saving Project Wait. Among them, TISCO's water-saving project alone has enabled TISCO to collect less than 14 million tons of new water each year.
As the largest stainless steel manufacturer in China, TISCO is located in Taiyuan, Shanxi. Taiyuan is one of the most severely water-short cities in the country. Only one company in Taigang will use 170,000 tons of water per day, accounting for one-fourth of the city's water consumption in one day. Water's problems will not only affect the survival and development of Taiyuan Steel, but also affect the economic development of Taiyuan. As a result, TISCO invested nearly RMB 50 million in reforming the 72,000 t/d net water softening water station using Bluestar high-tech reverse osmosis membrane separation technology, so that the steelmaking wastewater can be completely reused.
The chemical products produced by chemical companies are different in the production of products and processes, and the chemical substances contained in them are also very different. The recycling of sewage must be tailor-made to develop individual solutions. Bluestar Jinan Yuxing is a large water user in Jinan City and a major sewage emitter. However, with the technical upgrading and unremitting efforts of Lanxing Company, the company's sewage is now becoming a “sweet potatoâ€. Last year, the company invested more than RMB 300,000, completed 10,000 tons of chrome salt steam condensate and returned it to sulfuric acid plant waste heat boiler project, titanium white film evaporator steam condensate recycling boiler project, power plant boiler dusting, slag removal The recycling water project has realized the recycling of water closed circuit, which can save 150,000 cubic meters of fresh tap water, save 120,000 cubic meters of softened water, and greatly reduce water consumption. In addition, in order to achieve the reuse of water resources, the company has invested more than RMB 14 million in a new sewage treatment plant, which will reuse treated water for chromium salt and sulfuric acid production systems, saving 230,000 cubic meters of fresh water each year. The closed circuit recycling of water not only saves water consumption, but also greatly increases production efficiency and increases production. The titanium white workshop uses the cooled graphite water heat exchanger, bleaching cooling tank, and vacuum pump cooling string water for the water washing process, which greatly improves the speed of water washing. The water washing speed in winter is reduced from the original 5 hours to 4 hours. Increase the production of intermediate titanic acid by 4 tons. Now the industrial water of this plant is circulated through a closed circuit, and the water reuse rate reaches over 90%.
It is understood that Blue Star Dongda Chemical Co., Ltd. and Guangzhou Zhonghuan Bandai Environmental Engineering Co., Ltd. will officially launch the propylene oxide wastewater concentration project, which will completely eradicate the impact of wastewater containing propylene oxide on the water environment of Zibo City. The high temperature, high salinity, and high COD (chemical oxygen demand) of the propylene oxide waste water are difficult to handle and the governance investment is huge. It is a worldwide problem. Bluestar Dongda Chemical Co., Ltd. and Guangzhou Zhonghuan Bandai Environmental Engineering Co., Ltd. cooperated with the propylene oxide wastewater concentration project to find an effective treatment method for the company's propylene oxide wastewater. In addition to solving environmental pollution, it can also be extracted by multi-effect evaporation. The main component of wastewater is calcium chloride. The project has invested 120 million yuan in four phases. In the first phase, it will invest 30 million yuan. After it is put into production, it can produce 30,000 tons of calcium chloride per year, and the investment cost can be recovered within 2-3 years. When the annual output of Lanxing Industrial Co., Ltd. reaches 200,000 tons, the annual output of calcium chloride will reach 400,000 tons. By then, Lanxingdong will become the largest calcium chloride production base in the country.
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China National Bluestar (Group) Corporation has more than 30 chemical companies and 4 listed companies with total assets of 20 billion yuan. Through years of development, China Bluestar has become China's largest chemical material manufacturer. Many important fine chemical products in the national economy and national defense construction have a large number of patented technologies with independent intellectual property rights. Bluestar currently owns China's largest organic silicon device (ranked sixth in the world), polycarbon grade bisphenol A, epoxy resin, PVC paste resin device and Asia's only continuous process PBT engineering plastics production device. Bluestar's industrial silicon, titanium dioxide, chromic anhydride, epoxy resin, silane cable, color developer and other products accounted for the leading position in the domestic market, phenol, acetone production technology ranks the leading domestic level.
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