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  • Analysis of future market for disposal of hazardous waste by cement kiln
  • Hazardous waste refers to the inclusion of the national directory of national hazardous wastes or the state identified as a waste of toxic, corrosive, flammable, reactive, or infectious in accordance with a certain technical standard. In the 2016 edition of the national hazardous waste list, the list of hazardous wastes is divided into 46 categories, which are divided into 479 kinds. According to the different sources, they can be divided into industrial hazardous waste, medical waste and other hazardous wastes. At present, the leading industries of the dangerous industries are Dongjiang environmental protection, Veolia China, Everbright International and so on. As the disposal of hazardous wastes in cement kiln has the advantages of congenital technology and cost, the disposal of hazardous waste by cement rotary kiln has been paid more and more attention by technical workers. Since this year, it has been showing an explosive growth trend.
    1. The advantages and problems of the disposal of cement kiln:
    The disposal of cement kiln and professional high temperature incinerator can realize the reduction, harmless and resource utilization of hazardous waste, but the synergistic disposal of cement kiln has more advantages: (1) high temperature (1800 C) and 5-15s residence time in cement kiln can effectively reduce the production of dioxin; (2) the fly ash and slag can be made into the production of cement clinker. Zero discharge; (3) the medium scale professional incinerator can handle the hazardous waste 60t daily, while the minimum scale cement kiln synergistic disposal equipment (the related production line capacity 2500t/d) can reach 100t for the daily critical waste treatment. (4) according to the calculation, the construction of a professional incinerator with 10 thousand tons of hazardous waste disposal should cost 40 million yuan and the same processing capacity. The cooperative disposal equipment for cement kiln is only 1/4-1/5. (5) the cost of disposing hazardous waste in the cement kiln is 2000-2500 yuan per ton, and the professional incinerator is 3000-3500 yuan / ton compared with the professional incinerator, and the operation cost is lower.
    Hazardous waste treatment needs corresponding qualification, high technical requirements, and trade barriers are relatively higher than other environmental protection industries. Small and medium-sized enterprises with relatively limited capital and technology are more difficult to obtain appropriate qualifications to enter the hazardous waste disposal industry. The waste disposal project needs a long period from the declaration to the qualification and the operation. Generally, it is at least three years. Because of the long investment cycle, the capital strength of the enterprise is high. With the further regulation of the hazardous waste market, private enterprises and state-owned enterprises with strong capital and strong technological strength will benefit from the process of market standardization.
    2. What is the future market and the profit model?
    The output of hazardous waste is huge, showing a trend of growth in recent years, and the actual output is far greater than the market statistics. According to the official statistics, the production of hazardous waste in China reached 39 million 760 thousand tons in 2015. At present, the annual output is estimated to be over 50 million tons. The output of hazardous waste is expected to reach 60 million tons by 2020, and the actual production will be more. According to the average processing price of 3000 yuan / ton, it is expected to exceed 200 billion yuan in 2020.
    The operation mode of cement kiln to dispose of hazardous waste in collaboration with cement kiln:
    A. dispersion joint operation mode means that when the cement production enterprise and the hazardous waste pretreatment center belong to different legal body, the hazardous waste is transported to the cement production enterprise and directly into the kiln after the pretreatment center is pretreated to meet the requirements of the kiln (grinding). The operating mode of cooperative disposal.
    B. decentralized operation mode means that the cement production enterprise and the hazardous waste pretreatment center belong to the same legal person, and the hazardous waste is transported to the cement production enterprise and directly into the kiln after the pretreatment center is pretreated to meet the requirements of the kiln (grinding). The management mode of the same disposal.
    C. centralized management mode refers to the operation mode of preprocessing and cooperative disposal of hazardous waste in the factory area of cement production enterprises, including hazardous waste pretreatment and cement kiln co disposal facilities or operation belonging to the same legal person or the subject of different legal persons. Administration¡£ The healthy development of the industry can not be separated from the orderly management system. "One certificate management" will force the "scattered pollution" enterprises that fail to meet the environmental standards to be eliminated.
    According to the technical policy for the prevention and control of solid waste pollution by the cement kiln in December 2016, "after the release of this technical policy, the cement enterprises to build, rebuild or expand the disposal of hazardous waste should choose a single line design of 4000 tons / day of clinker production and the cement kiln." By the end of 2016, there were 628 4000t/d in the country, 114 in 4000t/d and 742 in total. If all the cement kilns were disposed in accordance with the scale of 300t/d, the annual capacity could exceed 80 million tons, covering about 80% of the annual output of hazardous waste. However, the cement kiln is not specially set up for the disposal of hazardous waste, but still mainly to produce cement, which requires basic cement demand, otherwise the enterprise library will have to stop the kiln. Therefore, enterprises with serious excess capacity should be considered comprehensively. Considering the serious overcapacity factors in some areas and the requirements of site selection, the cement enterprises that are really suitable for the disposal of hazardous wastes may be less than 50% of them (<370). Even so, the cement kiln is still expected to be able to occupy a place because of the advantages of innate technology and cost, such as the disposal of hazardous waste in cement kiln.
     
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