Bao Feiyang said: "Our idea is that the Xinpu Steel Coking Integrated Project includes the purification of coke oven gas and also the fractions of coal tar. Some of the coal tar fractions can be directly transported to Jingshan Chemical Zone through pipelines, while some of the coal tar fractions - mainly fractions that are not available in the chemical zone and are not suitable for centralized processing, will be left in the steel industry park for deep processing..."

"In addition to coal tar, coking by-products also include a large amount of coke oven gas. After purifying the coke oven gas, it can generate electricity and can also be used as a city gas supply market. This is not a problem and should be left to be treated together in the coking project. The coke oven gas also includes crude benzene, sulfur, and ammonia water, which are very useful chemical raw materials. Although there must be projects related to benzene, ammonia water, and sulfur in Jingshan Chemical Zone, the crude benzene collected in coke oven gas is different from ordinary benzene, and is also different from the benzene obtained from refining. I don't know if there are any enterprises in Jingshan Chemical Zone that are willing to build a special production line for our coking crude benzene."

Bao Feiyang shook his head: "The crude benzene obtained from the purification of coke oven gas is complex and the amount is not very large. It is different from the large refining and chemical industry, and the scale is much smaller. If there are enterprises in the chemical industry willing to do it, then we will definitely welcome it. If not, then we can only use a set of processing equipment to refine and purify the crude benzene..."

Bao Feiyang said: "Coal chemical industry actually has two directions. What I just mentioned is the coking direction, that is, the coking auxiliary product line. There is also a larger direction, the direct liquefied oil refining of coal, which can extract petrochemical products such as gasoline and diesel, benzene, mixed xylene, and then develop in the direction of producing methanol, olefins, ethylene, polyethylene, etc...."

"The coal chemical industry in Tianjiang Iron and Steel Park will be the former, but it is not ruled out that the latter is developing. After all, with the development of my country's economy, my country's oil imports are getting higher and higher. Developing coal chemical industry and alleviating 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 to compete with Jingshan Chemical Zone for large-scale polyethylene and polyvinyl chloride projects, but Jingshan Chemical Zone cannot abandon the refining route, and develop coal refining again. I think the two places can completely complement each other, send the by-products of coking in the steel plant and send the coal chemical products to the chemical zone through pipelines. The chemical zone will give full play to the advantages of large chemical industry, while Tianjiang Iron and Steel Park will give full play to the advantages of coal and steel joint. In fact, the two are more cooperation rather than competition!"

"Principal, you said that the integration of coking in steel plants is a trend. We also admit that there is a certain rationality in coking in steel plants and the processing of coking by-products. However, the park also needs to develop liquefied coal and increase the scale of coal chemical industry. This is unnecessary, right?" Zhang Borui immediately raised a question.

Bao Feiyang smiled and said, "It is also necessary. First of all, we need to see that the park itself has a demand for coal up to tens of millions of tons, or even more. Some of them are smelting coal, and some are fuel coal for power generation. Director Borui also talked about the environmental protection of coal. Using coal will indeed cause great environmental pressure, but we must use coal, which means we must deal with coal. Then if we invest less, it is difficult to be effective. If we invest more, we will naturally expand the scope of application. Although coal is polluted by a relatively large amount, in developed countries, pollution can actually be controlled. It is only because the production process and processing technology are relatively high. Only when we engage in large industries and large investments can we break through the bottleneck in this area."

"Secondly, the more coal we use, the lower the unit cost. When we develop coal chemical industry, the cost of using coal may be a little more expensive than pit openings, but it is also limited. Relying on more advanced processing technology and integrated production, the final product price is still very competitive! The more coal we use, the lower the cost of coal, which is also a major advantage for steel plants. On the contrary, if we do not engage in liquefied fractionation and only engage in simple coking coal chemical industry, many products cannot increase the scale, and some projects will even lose money..."

"Simply put, the more coal is used, the lower the cost of coal, and the investment in environmental protection can be divided. Therefore, coal, steel and electricity integration is also the development trend of the steel industry. As for the competition with Jingshan Chemical Zone that everyone is worried about, I think this does not exist. Jingshan Chemical Zone is centered on petrochemicals. We are more cooperative. For example, benzene, olefins and other products produced by coal chemical industry can be transported to the chemical zone through pipelines to supplement the synthetic raw materials in the chemical zone. Even if some products overlap, we should also see that Jingshan Chemical Zone does not have the ability to occupy the domestic market. The market is so big, and there is not a big difference between more and less. If we work together, we can also have more say in the market. I think this is a good thing..."

Because it involves Jingshan Chemical Zone and Chundong New Area, a deputy district mayor has also come to Jingshan District and Chundong New Area respectively. However, after hearing Bao Feiyang say this, the representatives of Jingshan District and Jingshan Chemical Zone could not find a reason to refute for a while.

Bao Feiyang made it clear that it is impossible for Jingshan Chemical Industry Zone to engage in coal chemical industry, so they questioned that it would be a bit unfair and unsatisfactory to engage in coal chemical industry in the steel park. As for some products of coal chemical projects that overlap with Jingshan Chemical Industry Zone, there is no big problem. After all, the domestic market is very large, and the current situation in China is that there are not many large chemical projects, but very scarce. If Huixun District has another refining project, it is indeed a duplicate construction, but the coal chemical project is really not a question.

"After participating in this project, I specifically studied the development and research of the domestic and international coal chemical industry..." He Tianhai, vice dean of the School of Planning and Architecture of Tongqi University, said.

"I agree with one thing that the district head just said, that is, coking integration is the development trend of steel plants. Basically, large steel plants should engage in coking integration. Coking integration has a higher efficiency in energy utilization and more effective control of pollutants! Our country is also studying the promotion and encouragement of coking integration in steel plants..."

"The advantages of coking integration in energy utilization and economics are very obvious, but although the pollution control of coking itself has improved, coking does have a greater pressure on the environment. The pollution generated during coking production includes waste gas, waste water and waste slag, among which the waste gas mainly comes from coal loading, coking, chemical product recycling, etc. The waste water comes from coal preparation, wet coking quenching, tar processing, gas cooling, debenzene denaphthalene and other processes during coking, including dust removal wastewater, residual ammonia water, phenol cyanide wastewater, desulfurization waste liquid, coal, etc.

Gas and water sealing, etc., waste slags include dust generated by raw coal during transportation, crushing, screening and coal filling, coal dust collected by dust collectors during production processes such as coking, coking quenching and coking screening, acid tar produced in ammonium sulfide saturator, tar slag and residual sludge produced during tar ammonium water clarification and separation, etc. Based on the production of 10 million tons of steel in Xinpu Steel, the coke required annually is about 5 million tons, and a coking plant of 5 million tons will produce nearly 2,000 tons of acid tar, tens of thousands of tons of tar slag, and 5,000 tons of various dusts..."

As He Tianhai said, including Yang Chenglin, Zhou Kunlin and others, everyone frowned. The numbers listed by He Tianhai were really terrible!

He Tianhai said: "Of course, pollution is not terrible. Pollutants themselves are compounds that can not only be treated, but also be used. For example, coking waste slag is composed of compounds such as silicon, aluminum, magnesium, iron, calcium, and also contains a small amount of titanium, potassium, nano, phosphorus and trace amounts of cyanide. Many of these substances can be recycled and produced new products as raw materials for resource recycling. For example, metal elements and heavy metals can be recycled, and some chemical substances can be decomposed and synthesized, becoming raw materials for synthetic resins, synthetic rubbers and synthetic coatings. The remaining useless waste slag can be made into bricks. As additives for cement and concrete, they are all useful."

"Relatively speaking, recycling and utilization of waste gas and wastewater is more difficult and the management requirements are higher. However, a mature treatment process such as waste gas dust removal, flue gas desulfurization and purification and combustion has been basically formed. The wastewater has also formed a multi-stage treatment method and is recycled in industrial order to reduce emissions!"

He Tianhai said: "In addition to governance, the most effective way to control pollutants is actually to improve process technology during production, and control it in production! Whether it is control in production or recycling, research and investment in new technologies are very important."

"About this point, I focused on it, had in-depth exchanges and communication with the district principal of Huixun District, and had contact and understanding with Fangxia New Materials Company. I feel that the district principal has considerate in this regard. Although some things are not reflected in the planning, they have already started preparations in this regard. Fangxia New Materials has a part of the technical reserve for the recycling of coking waste residues. By recycling the substances in the waste residue, the development of new material products is very promising!"

He Tianhai said: "This is also something I am very optimistic about. Pollution is also a resource. As long as we are willing to invest, we can turn waste into treasure. But I also learned that the investment in technology research and development is very large, and the cost of recycling is actually very high, with poor efficiency. In other words, if we cannot form a certain scale, we will definitely lose money, and we will lose a lot!"
Chapter completed!