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"Our idea is that the Xinpu Steel Coking Integration Project includes the purification of coke oven gas, as well as the coal tar fractions, some of which can be directly transported to Jingshan Chemical Industry Park through pipelines, while some of the coal tar fractions, mainly those that are not available in the chemical industry park and are not suitable for centralized processing, will be left in the steel industrial park for further ......processing," Bao said.

"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 and can also be used as a city gas supply market, which is not a problem and should definitely be left in the coking project to deal with it. Coke oven gas also includes crude benzene, sulfur, and ammonia, which are all very useful chemical raw materials. Although there must be projects about benzene, ammonia and sulfur in Jingshan Chemical Industry Park, the crude benzene collected in coke oven gas is not the same as ordinary benzene, and it is not the same as the benzene obtained from oil refining. ”

Bao Feiyang shook his head: "The crude benzene composition obtained by coke oven gas purification is complex, and the amount will not be very much, it is different from large refining, the scale is much smaller, if there are enterprises in the chemical industry park that are 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 crude benzene......

Bao Feiyang said: "There are actually two directions for coal chemical industry, what I just said is the direction of coking, that is, the subsidiary product line of coking, and there is a larger direction is the direct liquefaction and refining of coal, which can be refined from coal to gasoline and diesel, benzene, mixed xylene and other petrochemical products, 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 dominated by the former, but the development of the latter is not excluded, after all, with the development of China's economy, China's oil imports are getting higher and higher, the development of coal chemical industry, alleviate the dependence on oil imports, the future is also the direction of national policy support. Of course, it is impossible for the steel park to develop coal chemical industry and compete with Jingshan Chemical Industry Zone for large-scale polyethylene and PVC projects, but it is also impossible for Jingshan Chemical Industry Park to abandon the oil refining route and develop coal refining, I think the two places can complement each other, and the by-products of steel plant coking and coal chemical products will be sent to the chemical industry park through pipelines, and the chemical industry park will give full play to the advantages of large chemical industry, and Tianjiang Iron and Steel Park will play the advantages of coal and steel combination, in fact, there is more cooperation between the two than competition!"

"Mayor Bao, you said that the integration of coking in steel plants is a trend, and we also admit that there is a certain rationality in coking in steel plants and the processing and processing of coking by-products, but the park also needs to develop coal liquefaction and refining and expand the scale of coal chemical industry, which is not necessary, right?" Zhang Borui immediately questioned.

Bao Feiyang smiled and said, "It's 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 some is fuel coal for power generation. Then it is difficult for us to have an effect if we invest less, and we invest more...... Naturally, the scope of applications should be expanded. Although the pollution of coal is relatively large, in developed countries, pollution can actually be controlled, but the production process and treatment technology requirements are relatively high, and we can break through the bottleneck in this area by engaging in large industries and large investments. ”

"Secondly, the park uses more coal, the more coal used, the lower the unit cost, we develop coal chemical industry, the cost of coal may be a little more expensive than the pithead, but it is also limited, and 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 big advantage for steel mills, on the contrary, if we do not engage in liquefaction fractionation, only engage in simple coking coal chemical industry, many products can not be scaled, the cost is relatively high, and some projects even have to lose money......"

"To put it simply, the more coal is used, the lower the cost of coal, and the investment in environmental protection can also be shared, so the integration of coal, steel and electricity, which is also the development trend of the steel industry, as for the competition with Jingshan Chemical Industry Park that everyone is worried about, I think this does not exist, Jingshan Chemical Industry Park is based on petrochemical industry as the core, and our two sides are more cooperative, such as benzene produced by coal chemical industry, Olefins and other products can be transported to the chemical zone through pipelines to supplement the synthetic raw materials in the chemical zone, and even if some products will overlap, we should also see that Jingshan Chemical Zone has not yet been able to occupy the domestic market, the market is so big, the difference between more and less is not big, we work together, we can have more say in the market, I think this is a good thing......

Because it involves Jingshan Chemical Industry Zone and Chundong New District, Jingshan District and Chundong New Area also have a deputy mayor, but hearing Bao Feiyang say this, the representatives of Jingshan District and Jingshan Chemical Industry Zone couldn't find a reason to refute for a while.

Bao Feiyang made it very clear that it is impossible for Jingshan Chemical Industry Zone to engage in coal chemical industry, so it seems a bit wrong for them to question the coal chemical industry in the steel park. As for some products of the coal chemical project will overlap with Jingshan Chemical Industry Zone, the problem is not big, after all, the domestic market is very large, and now the domestic situation is in many large chemical projects, not too much, but very scarce, if Huixun District has the same oil refining project, it is indeed a duplicate construction, but the coal chemical project, really can't talk about it.

"After participating in this project, I have studied the development and research of the coal chemical industry at home and abroad...... said He Tianhai, deputy dean of the School of Planning and Architecture of Tongqi University.

"I agree with what the head of the Bao District just said, that is, the integration of coking is the trend of the development of steel plants, and basically large steel plants should engage in coking integration. The integration of coking has a higher efficiency in the use of energy, and the control of pollutants is also more effective! China is also studying the policy of promoting and encouraging the implementation of coking integration in iron and steel plants......

"The advantages of coking integration in terms of energy utilization and economy are very obvious, but although the pollution control of coking itself has been improved, coking will indeed put greater pressure on the environment. The pollution generated in the coking process includes waste gas, waste water and waste residue, of which the waste gas mainly comes from the process of coal loading, coking, and chemical product recovery. Wastewater comes from coal preparation, wet quenching, tar processing, gas cooling, debenzene-naphthalene and other processes in the coking process, including dust removal wastewater, residual ammonia, phenol cyanide wastewater, desulfurization waste liquid, gas water sealing water, etc., waste residue includes the dust generated by raw coal in the process of transportation, crushing, screening and coal loading, coal dust collected by the dust collector in the production process of coke pushing, coke quenching and coke screening, acid tar produced in the ammonium sulfate saturator, tar residue and residual sludge generated in the clarification and separation process of tar ammonia water. Based on the 10 million tons of steel output of Xinpu Steel, the annual coke required is about 5 million tons, and a 5 million tons of coking plant will produce nearly 2,000 tons of acid tar, tens of thousands of tons of tar residue, and 5,000 tons of various dust......"

With He Tianhai's words, including Yang Chenglin, Zhou Kunlin and others, everyone's brows furrowed in unison. The numbers listed by He Tianhai are really terrifying!

He Tianhai said: "Of course, pollution is not terrible, and pollutants themselves are also chemical compounds, which can not only be treated, but also used. For example, coking waste slag 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 and used as raw materials to produce new products and reuse resources. For example, metal elements and heavy metals can be recycled, some chemicals can be decomposed and synthesized into raw materials for synthetic resins, synthetic rubber and synthetic coatings, and the remaining useless waste residue can be made into bricks and used as additives for cement and concrete. ”

"Relatively speaking, the recycling of waste gas and wastewater is more difficult, and the requirements for treatment are higher, but basically a set of mature waste gas dust removal, flue gas desulfurization, purification and combustion and other treatment processes have been formed, and wastewater has also formed a multi-stage treatment method, and industrial recycling is carried out to reduce emissions!"

He Tianhai said: "In addition to treatment, the most effective way to control pollutants is actually to improve the process technology in the production process, and control in production! ”

"On this point, I focused on it, and Huixun District Bao District Mayor had in-depth communication, and with Fangxia New Materials Company to contact and understand, I feel that Bao District Mayor in this regard is more in-depth, although some things have not been reflected in the planning, but they have begun to prepare for this area. Fangxia New Materials has a part of the technical reserves for the recycling of coking waste residue, and the development of new material products is very promising by recycling the substances in the waste residue!

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." But I also learned that the investment in technology research and development is very large, and the cost of recycling is actually very high, and the benefits are poor, or if you can't form a certain scale, you will definitely lose money, and you will lose a lot!"

"From this point of view, I can better understand why the mayor of Bao District must develop coal chemical industry in the steel park, because only when the scale of this industry is increased, it is possible to make more investment in the treatment of pollutants, and only with input can there be output, and the ......problems that arise can be better solved."

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