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    Home > Organic Chemistry Topics > Organic Chemistry Project > Zero Tolerance of Pollution-Coking companies start a life and death battle for environmental protection

    Zero Tolerance of Pollution-Coking companies start a life and death battle for environmental protection

    • Last Update: 2022-03-02
    • Source: Internet
    • Author: User
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    At the beginning of last year, the country began to implement new standards for coke oven flue gas pollutant emissions, which really made coking companies feel the pressure under the heavy burden
    .
    Not long ago, the large-scale shutdown of coking companies in Linyi, Shandong, can clearly see the country’s zero tolerance for pollution: if environmental protection fails to meet the standards, the final outcome of the coking companies is to be shut down

    .
    So, what is the current progress of coking enterprises in pollution control? What is the operating status of the already built flue gas denitration environmental protection equipment? The reporter conducted an interview

    .
    Pollution control coking enterprises face the test of life and death.
    On January 17, the first set of coking oven flue gas low-temperature denitrification industrial demonstration equipment in the coking industry in Jiangsu Yizhou Coal Coking Co.
    , Ltd.
    has been successfully operated for 3 months, and the system is running well

    .
    The on-site online CEMS system monitoring results show that the average denitrification rate of coke oven flue gas exceeds 90%, more than 95% in some periods, and the nitrogen oxide concentration at the reactor outlet is less than 70mg/m3, which is far better than the national emission limit

    .
    Reporters learned that in December 2007, Shandong Yizhou Group invested 2.
    3 billion yuan in Jiangsu Pizhou Economic and Technological Development Zone, the construction of large independent coal chemical enterprises - State Coking Co.
    , Ltd.
    Jiangsu Yi

    .
    At present, the first and second phases have been put into production, the third and fourth phases are under construction, and the fifth and sixth phases have been planned

    .
    Upon completion, it will become the country's largest independent coking enterprise with an annual output of 7.
    5 million tons of coke

    .
    Industry insiders believe that most independent coking plants use coke oven gas for heating, and it is more difficult for emissions to meet the standards, which has become the biggest bottleneck restricting enterprises' environmental protection standards

    .
    According to incomplete statistics, China’s annual coke production emits 700,000 tons of pollutants such as benzene solubles, benzopyrene and soot into the atmosphere, of which 1,700 tons of benzopyrene

    .
    Experts in the industry said that the benzene and phenolic pollutants produced in the production process of coking enterprises can hardly achieve the desired effect with conventional treatment methods, and must be treated by professional environmental protection engineering companies

    .
    "If you can't provide the funds for desulfurization and denitrification equipment, the company will naturally be eliminated

    .
    Zheng Wenhua, a senior engineer of China Metallurgical Coking Engineering Technology Co.
    , Ltd.
    , said that the national coke oven flue gas emission standards for sulfur dioxide and nitrogen oxides implemented by the country on January 1, 2015 have made domestic coking companies generally feel difficult

    .
    China Coking Shi Yanfeng, secretary-general of the industry association, also believes that China’s coking industry is one of the key industries for energy resource consumption and pollutant emission

    .
    The coking production process has many pollutant discharge links, high intensity, various types, and high toxicity.
    If it is not treated, it will be directly discharged.
    The air will cause great harm to the surrounding environment and the health of residents

    .
    How to turn these disadvantages into advantages? "Our approach is to implement integrated cooperation with the world's chemical giants Cobbs, Japan, etc.
    , a pipeline A number of companies are connected to use coal tar to produce carbon electrodes, crude naphthalene, soft pitch, needle coke and other products, so as to realize the intensification of production and the refinement of products

    .
    Zhang Wuzhou, general manager of Jiangsu Yizhou Coal Coking Co.
    , Ltd.
    , told the China Chemical Industry News that the company will also play a leading role to promote the massive rise of chemical industry clusters, weaving Jiangsu Coking as the center of the chemical industry network, and forming a chain of production.
    , Operating closely-connected industrial clusters

    .
    "Everyone who comes to Yizhou Coal Coking is amazed at the hard environment of our company.
    There is a huge difference with those legendary coking companies that are full of pulverized coal and billowing smoke from chimneys.
    Difference

    .
    "Zhang Wuzhou told reporters that all kinds of pollution from coking companies are controllable and manageable.
    In the final analysis, the company is willing to invest a lot of money in environmental protection projects for construction and governance

    .
    It is understood that the company currently has four flue gases launched.
    The denitrification environmental protection project has invested a total of 200 million yuan, which is equivalent to the full benefits of the company in 2015.

    Jointly fight a beautiful environmental protection battle, Japan’s National Petroleum Association President Ikeda recently participated in the China Coking Industry Innovation Development Summit Forum, said that coal chemical industry The future of the industry is bright
    .
    He believes that China’s coal chemical industry must not only conduct school-enterprise alliances at home, but also conduct school-enterprise alliances and enterprise-enterprise alliances on an international scale

    .
    Industry insiders also believe that the pollution control of coking enterprises should be more important A joint battle

    .
    Zhang Wuzhou told reporters that at the beginning of the construction of the Yizhou Coal Coking Plant, environmental construction was put first, and all emissions and environmental protection data were much lower than the national indicators

    .
    In response to the new regulations for coking companies that began in 2015, the company immediately issued a tender for flue gas denitration environmental protection projects

    .
    From more than 30 environmental engineering company is a stand out among the Jiangsu Environmental Protection Equipment Engineering Co.
    Waterford, Ireland

    .
    Why is a local environmental protection engineering company in Jiangsu? Jiangsu Airwater Environmental Protection Equipment Engineering Co.
    , Ltd.
    is a recruit in the pollution control of the coking industry, and many voices are questioning

    .
    "The reason why we won the bid is because we have the strong technical backing of Dalian Institute of Chemical Physics, Chinese Academy of Sciences

    .
    The project uses high-efficiency honeycomb SCR (selective catalytic reduction technology) low-temperature catalyst and denitration technology

    .
    " The company's chairman Kong Yueping told a reporter from China Chemical Industry News that there have been many successful cases of high-temperature denitrification in power plants, but it is a new attempt to denitrify coke oven flue gas at low temperature in the field of 250 ℃

    .
    According to Wang Shudong, a researcher from the Energy Conservation and Environment Department of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, the excessive emission of nitrogen oxides in coke oven flue gas has always been a technical problem that the coal coking industry has not solved

    .
    For this reason, the institute has focused on coke oven flue gas denitration technology in recent years, and has developed high-efficiency low-temperature denitration catalysts, which have many advantages such as low operating temperature, high denitrification accuracy, strong sulfur resistance, and high operating space velocity

    .
    In 2014, the institute took the lead in carrying out the industrial sideline experiment of coke oven flue gas SCR denitrification in the coking plant, which verified the performance of the low-temperature denitrification catalyst under actual working conditions, and accumulated sufficient results for the subsequent implementation of the coke oven flue gas SCR denitrification project.
    The experience has laid a solid technical foundation

    .
    In 2015, the institute, together with Jiangsu Airwater Environmental Protection Equipment Engineering Co.
    , Ltd.
    and Jiangsu Yizhou Coal Coking Co.
    , Ltd.
    , jointly carried out the construction of a coke oven flue gas low-temperature denitration industrial demonstration device, and provided denitration catalysts and process technology for the demonstration device software

    .
    With the joint efforts of the three parties, the project completed the design, civil engineering, catalyst production, and equipment installation and commissioning tasks in just 5 months.
    It was successfully started on November 17, 2015, and the system is currently operating well

    .
    "In view of the current situation of overcapacity in China's coking industry and increasing environmental pressures, relevant state departments are deploying substantial measures to eliminate outdated coking capacity equipment and speed up the pace of eliminating outdated capacity

    .
    " said Cui Pijiang, president of the China Coking Industry Association.
    Under the pressure of overcapacity and the high pressure of environmental protection, 2016 will become a critical period for the reshuffle of the coking industry.
    The environmental protection check will undoubtedly become a ghost gate for coking companies.
    Environmental protection is not up to standard.
    The closure of coking companies is not only the new normal, but also the general trend

    .
    Yuan Youzhu, director of the National Engineering Laboratory for Cleaner Production of Alcohol Ether Ester Chemicals, said that in the future, China should speed up the transformation and industrialization of scientific research results in universities, and at the same time promote the integration of production, education and research, focusing on the research and development of green catalysts and clean self-contained processes, including process development and design.
    Standard research, personnel training, international exchanges and cooperation of verification materials, etc.
    , to promote independent innovation in the industry, so as to improve the international competitiveness of China's coking industry

    .
    The model maximizes the effectiveness of pollution control.
    "Our coking company has accumulated losses for three consecutive months, and we have lost more than 10 million yuan every month

    .
    " A director of the office of a chemical company in Tengzhou, Shandong told a reporter from China Chemical Industry News.
    In 2015, it is still difficult to alleviate the predicament of overcapacity in the coke industry's capacity withdrawal, coke prices continue to decline unilaterally, and independent coking companies have intensified losses

    .
    It is expected that the contradiction between supply and demand in 2016 will still restrict the operation of the coke market.
    The weakness of the coke market is difficult to change.
    The price of coke fluctuates in the range of about 200 yuan/ton, and some independent coking plants will face shutdowns

    .
    "This has brought great pressure to the environmental protection management of coking companies

    .
    " Du Hanshuang, deputy general manager and chief engineer of Shandong Zoucheng Rongxin Coal Coking Co.
    , Ltd.
    , said that overcapacity and environmental protection have made the coking industry difficult, and many coking companies The company hopes that the environmental protection engineering company for the company’s environmental protection projects will first save money, because the current living space and profit of the coking company are almost zero; secondly, the installation of flue gas denitrification equipment will be completed when space is limited.

    .
    After the coking production plant has undergone various equipment transformations, the space left for flue gas denitration engineering equipment is limited.
    How to use the limited space and funds to maximize the effect of environmental protection projects is an urgent problem for coking enterprises and environmental protection engineering companies.

    .
    These issues related to the survival of coking companies can be resolved by environmental protection engineering companies one by one? "Yizhou Coal Coking Co.
    , Ltd.
    invested only more than 10 million yuan in environmental protection for the No.
    1 coke oven, while other environmental protection engineering companies invested more than 30 million yuan.

    Kong Yueping told the reporter of China Chemical Industry News that in addition, the environmental protection equipment of Elwater Engineering Company occupies a small area.
    Take the Hamburg project of Yizhou Coal Coking as an example, it only covers an area of ​​less than 80 square meters

    .
    In fact, the layout of coking companies is already quite compact, and there will be no extra space to build too large pollution reduction treatment equipment.
    This requires environmental protection engineering companies to tailor environmental pollution treatment equipment according to the actual situation of each coking company.
    It is necessary to truly achieve large energy for small equipment, occupy as little space as possible, and maximize equipment accuracy

    .
    "The low-temperature flue gas denitration project of the coke oven of Yizhou Coal Coking Co.
    , Ltd.
    selects a monolithic coated structure catalyst based on cordierite honeycomb ceramics

    .
    The catalyst is composed of cordierite honeycomb ceramics, metal oxide coatings, and active components

    .
    Oxidation.
    The material coating is uniformly and firmly attached to the outer surface of the honeycomb ceramic, and the active components are dispersed on the oxide coating.
    It has high denitration rate, high space velocity operation, reduced resistance, good selectivity, low ammonia leakage rate, low thermal expansion coefficient, etc.
    It has many advantages and is an overall catalyst that is very suitable for flue gas NOx treatment

    .
    " Xu Jian, general manager of another environmental protection equipment engineering company in Jiangsu, told a reporter from China Chemical Industry News

    .
    An on-site inspection report by a staff member of the Xuzhou Municipal Environmental Protection Bureau showed that Airwater’s environmental protection equipment only added 2 yuan per ton of coke to the company; the amount of ammonia and electricity consumption were less than 1.
    6 yuan

    .
    At the same time, the operation of the coke oven is stable and the flue gas nitrogen oxide emission treatment is stable, which is much lower than the national standard

    .
    Wang Shudong introduced that the integrated denitrification and dust removal pyrolysis device has the functions of low-temperature denitrification and catalyst in-situ recyclable treatment, without any hazardous waste materials, and an annual treatment of 3,000 tons of nitrogen oxides.

    .
    The reporter learned that because of the successful operation of the first environmental protection engineering equipment in the company, Yizhou Coal Coking was approved, and the other 2, 1, and 4 boilers have also signed engineering contracts and are currently in the civil construction stage

    .
    Industry experts believe that low-temperature flue gas denitration from coke ovens has always been a difficult global technical problem for the coking industry.
    If this technology is promoted nationwide, it will play a huge role in promoting the implementation of the national "13th Five-Year" environmental protection plan

    .
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