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Chapter 1809 Pollution and Treatment

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    Bao Feiyang said: ¡°Our idea is that the Xinpu Steel coking integrated project includes the purification of coke oven gas and coal tar fractions. Some coal tar fractions can be directly transported to Jingshan Chemical Industry Zone through pipelines, while some coal tar fractions -  ¡ª Mainly the fractions that are not available in the chemical industry zone and are not suitable for centralized processing are left in the steel industry park for deep processing" "In addition to coal tar, the by-products of coking also include a large amount of coke oven gas, which can be used to generate electricity after purification.  It can also be used as a city gas supply market. This is not a problem and should definitely be left in the coking project. Coke oven gas also includes crude benzene, sulfur, and ammonia, which are very useful chemical raw materials in Jingshan.  There must be projects related to benzene, ammonia, and sulfur in the Chemical Industry Zone, but the crude benzene obtained from coke oven gas is different from ordinary benzene, and it is also different from the benzene obtained from oil refining. I don¡¯t know if there are any companies in the Jingshan Chemical Industry Zone  We are willing to build a special production line for our coking crude benzene. " Bao Feiyang shook his head: "The crude benzene obtained from coke oven gas purification has complex ingredients, and the amount is not large. It is different from large-scale refining, and the scale is smaller.  If there are companies in the chemical industry zone that are willing to do it, then we will definitely welcome it. If not, then we can only buy a set of processing equipment to refine and purify crude benzene" Bao Feiyang said: "There are actually two coal chemical industries.  Direction, what I just mentioned is the direction of coking, which is the ancillary product line of coking. There is also a larger direction of direct liquefaction and refining of coal. Petrochemical products such as gasoline, diesel, benzene, mixed xylene, etc. can be extracted from coal.  Then it will develop in the direction of producing methanol, olefins, ethylene, polyethylene, etc" "The coal chemical industry in Tianjiang Iron and Steel Park will be mainly based on the former, but the development of the latter is not excluded. After all, with the development of our country's economy, our country's petroleum industry  The import volume is getting higher and higher. The development of coal chemical industry and alleviation of dependence on oil imports will also be the direction of national policy support in the future. Of course, it is impossible for the steel park to develop coal chemical industry and compete with the Jingshan Chemical Industry Zone for large-scale polyethylene and polychloride.  Ethylene project, but it is impossible for the Jingshan Chemical Industry Zone to abandon the refining route and develop coal refining. I think the two places can completely complement each other. The by-products of coking in the steel plant and the products of coal chemical industry will be sent to the chemical industry zone through pipelines. The chemical industry zone  Taking advantage of the large chemical industry, while Tianjiang Iron and Steel Park takes advantage of the combination of coal and steel. In fact, the two are more about cooperation than competition! " "Director Bao, you said that the integration of coking in steel plants is a trend.  We also admit that there is a certain rationality in the treatment and processing of coking by-products in coking in steel plants, but the park also needs to develop coal liquefaction and refining and expand the scale of coal chemical industry. Isn't this necessary?" Zhang Borui immediately questioned.  Bao Feiyang smiled and said: "It is also necessary. First of all, we have to see that the demand for coal in the park itself is as high as tens of millions of tons, or even more, part of which is smelting coal, and part is fuel for power generation.  Coal, Director Bo Rui also talked about the environmental issues of coal. The use of coal will indeed create a lot of environmental pressure, but we must use coal, which means we have to deal with coal, so it will be difficult for us to invest less.  The effect is that the more investment you make the scope of application will naturally be expanded. Although coal pollutes a lot, in developed countries, the pollution can actually be controlled. However, the production process and treatment technology requirements are relatively high. We engage in large-scale industries.  Only with large investment can we break through the bottleneck in this area. " "Secondly, the park uses a lot of coal. The more coal used, the lower the unit cost. When we develop coal chemical industry, the cost of using coal may be a little more expensive than that in Kengkou, but that's the case.  It is also limited, but relying on more advanced processing technology and integrated production, the price of the final product is still very competitive! The more coal we use, the lower the cost of coal, which is also a big problem for steel plants.  Advantages, on the contrary, if we do not engage in liquefaction fractionation and only engage in pure coking coal chemical industry, the scale of many products will not increase, the cost will be relatively high, and some projects will even lose money" "Simply speaking, the more coal is used, the more  The more coal, the lower the cost of coal, and the investment in environmental protection can also be shared. Therefore, the integration of coal, steel, and electricity is also the development trend of the steel industry. As for the competition with Jingshan Chemical Industry Zone that everyone is worried about, I think this  It does not exist. The Jingshan Chemical Industry Zone is centered on petrochemical industry. We are more cooperative. For example, benzene, olefins and other products produced by the coal chemical industry can be transported to the chemical industry zone through pipelines to supplement the synthetic raw materials in the chemical industry zone.  , and even if some products overlap, we should also see that Jingshan Chemical Industry Zone is not yet capable of occupying the domestic market. The market is so big, and the difference between one more and one less is not big. If we work together, we can also win in the market.  I think it¡¯s a good thing to have more say¡± Because it involves Jingshan Chemical Industry Zone and Chundong New District, Jingshan District and Chundong New District also have a deputy district chief respectively, but I heard Bao Feiyang say this  , the representatives of Jingshan District and Jingshan Chemical Industry Zone could not find a reason to refute for a while.  There is a?Bao Feiyang made it very clear that it is impossible for the Jingshan Chemical Industry Park to engage in coal chemical industry, so it seems a little unfair for them to question the coal chemical industry in the Steel Park.  As for some products of the coal chemical project that will overlap with the Jingshan Chemical Industry Zone, it is not a big problem. After all, the domestic market is very large, and the current domestic situation is that in many large chemical projects, it is not that there is too much, but that there is a very shortage.  , if the same oil refining project is built in Huixun District, it will indeed be a duplication of construction, but the coal chemical project is really out of the question.  "After participating in this project, I specifically studied the development and research situation of the coal chemical industry at home and abroad" He Tianhai, deputy dean of the School of Planning and Architecture of Tongqi University, said.  "I agree with what District Chief Bao just said, that is, the integration of coking is the development trend of steel plants. Basically, large steel plants should engage in integrated coking. Integrated coking is more efficient in energy utilization.  High, and the control of pollutants is also more effective! Our country is also studying the promotion of policies to encourage the implementation of coking integration in steel plants" "The advantages of coking integration in terms of energy utilization and economy are very obvious, but coking itself  Although pollution control has been improved, coking does put a greater pressure on the environment. The pollution generated during the coking process includes waste gas, waste water and waste residue. The waste gas mainly comes from coal loading, coking, chemical product recovery and other processes.  Wastewater comes from coal preparation, wet coke quenching, tar processing, gas cooling, dephenylinization and denaphtholysis in the coking process, including dust removal wastewater, residual ammonia water, phenol cyanide wastewater, desulfurization waste liquid, gas water sealing water, etc., and waste residues  Including dust generated during the transportation, crushing, screening and loading of raw coal, coal dust collected by dust collectors during coke pushing, coke quenching and coke screening, acid tar and tar ammonia water clarification produced in ammonium sulfate saturators  The tar residue and remaining sludge generated during the separation process are calculated based on Xinpu Steel's 10 million tons of steel output. The annual coke required is approximately 5 million tons, and a 5 million tons coking plant will produce acid tar.  Nearly two thousand tons, tens of thousands of tons of tar residue, five thousand tons of various dusts" Following He Tianhai's words, everyone including Yang Chenglin, Zhou Kunlin and others frowned in unison.  The numbers listed by He Tianhai are really terrible!  He Tianhai said: "Of course, pollution is not terrible. The pollutants themselves are also compounds, which can not only be treated but also utilized. For example, coking waste residue is composed of silicon, aluminum, magnesium, iron, calcium and other compounds, and also contains  A small amount of titanium, potassium, sodium, phosphorus and other compounds and trace amounts of cyanide, many of which can be recycled as raw materials to produce new products and reused. For example, metal elements and heavy metals can be recycled, and some chemical substances can be decomposed.  Synthesized, it becomes the raw material for synthetic resin, synthetic rubber and synthetic coatings, and the remaining useless waste residue can be made into bricks and used as additives for cement and concrete, which are all useful. " "Relatively speaking, waste gas and waste water are all useful.  Recycling is more difficult and the requirements for governance are higher. However, a set of mature waste gas dust removal, flue gas desulfurization, purification and combustion and other treatment processes have basically been formed. Wastewater has also formed a multi-stage treatment method and is industrially recycled.  Reduce emissions! " He Tianhai said: "In addition to treatment, the most effective way to control pollutants is to improve the process technology in the production process and control it in production! Whether it is control in production or recycling, new technologies  "Research and investment are very important." "I focused on this point, had in-depth communication with District Chief Bao of Huixun District, and had contact and understanding with Fangxia New Materials Company. I feel  District Chief Bao has considered this aspect in depth. Although some things are not reflected in the plan, they have already started preparations in this area. Fangxia New Materials has some technical reserves for the recycling of coking waste residue.  The prospects for developing new material products are very promising!¡± He Tianhai said: ¡°I am also very optimistic about this. Pollution is also a resource. As long as we are willing to invest, we can turn waste into treasure.¡±  , The investment in technology research and development is very high, and the cost of recycling is actually very high, and the efficiency is poor. In other words, if it cannot achieve a certain scale, it will definitely lose money, and it will be a lot of money!¡± ¡°From this perspective, I will lose money!  It is relatively understandable why District Chief Bao must develop the coal chemical industry in the steel park, because only when the scale of this industry increases, will it be possible to invest more in the treatment of pollutants. Only with investment can we achieve output.  Better solve problems that arise"
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