Mercury emission reduction of the hottest PVC thun

2022-08-20
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PVC mercury emission reduction thunder and rain are big

the global elimination of mercury pollution is taking concerted action, the international call for the prohibition of mercury is getting louder and louder, domestic mercury emission reduction laws and regulations have been issued intensively, mercury resources are decreasing day by day, and the situation faced by the carbide PVC industry, a major mercury consumer, is very serious. Some experts said that China's calcium carbide PVC industry is in a critical period of life and death. It is gratifying that over the past year, through the joint efforts of all parties, the calcium carbide PVC industry has achieved positive results in promoting the application of low mercury catalysts and the research and development of mercury free catalysts, and has improved the level of mercury pollution prevention and control. This is the information obtained from the meeting of the leading group and expert group on mercury pollution prevention and control in the calcium carbide PVC industry held in Beijing on March 4

from January 24 to 28 this year, the second meeting of the Intergovernmental Negotiating Committee of the international mercury convention organized by the United Nations Environment Programme was held in Chiba, Japan. The meeting discussed the instrument required to be prepared in the first intergovernmental negotiation held in Stockholm, Sweden, last June, and analyzed the provisions of the instrument. Although there is no conclusive opinion in this negotiation, the direction has been very clear, and the requirements for the exploitation of mercury resources, the trade and circulation of mercury products, and the use of mercury technology will be very strict. According to relevant arrangements, the United Nations Environment Programme will also organize three meetings to form a global legally binding instrument on mercury in early 2013

the Chinese government attaches great importance to the prevention and control of mercury pollution and proposes to focus on the prevention and control of heavy metal pollution during the "12th Five Year Plan". At the end of 2009, the Ministry of environmental protection, the Ministry of industry and information technology and other eight departments jointly issued the guidance on strengthening the prevention and control of heavy metal pollution. 201 before measurement, the hardness tester needs to be calibrated with a standard block. In May, the Ministry of industry and information technology issued the "comprehensive prevention and control plan of mercury pollution in calcium carbide PVC industry", clarifying the specific technical plan and implementation measures to eliminate mercury pollution in calcium carbide PVC. In January, 2011, the Ministry of environmental protection issued the notice on strengthening the prevention and control of mercury pollution in PVC production by calcium carbide method and related industries, proposing that by the end of 2015, all PVC production enterprises by calcium carbide method should use low mercury catalysts; After 60 days from the date of issuance of the notice, new, reconstructed and expanded calcium carbide PVC production projects must use low mercury catalysts; The existing calcium carbide PVC production plant shall not be rebuilt or expanded before the low mercury catalyst is replaced by the high mercury catalyst; At the same time, it is proposed that PVC production enterprises with calcium carbide process should actively adopt advanced production technology and mercury pollution prevention technology, strengthen technological transformation, and reduce mercury emissions. In February, 2011, the State Council approved the "12th Five Year Plan" for the comprehensive prevention and control of heavy metal pollution, specifying the prevention and control objectives of heavy metal pollution

at present, China's annual mercury consumption accounts for 30% - 40% of the world's total, of which the mercury consumption of calcium carbide PVC accounts for 60% of the national mercury consumption. On the other hand, constrained by China's resource structure, the situation that PVC production is dominated by calcium carbide cannot be changed. This determines that the calcium carbide PVC industry will become the most important area for the implementation of the international mercury convention in the future

facing the extremely severe domestic and international situation, with the strong support of relevant national departments and the active cooperation of scientific research institutes, universities and enterprises, the calcium carbide PVC industry has made positive progress in mercury emission reduction in more than a year

at the meeting of the leading group and expert group for the prevention and control of mercury pollution in the calcium carbide PVC industry, Zhou Xianhui, Deputy Secretary General of the China Petroleum and Chemical Industry Federation and head of the expert group for the prevention and control of mercury pollution, introduced that at the beginning of last year, the petrochemical Federation organized and established the leading group and expert group for the prevention and control of mercury pollution, and established the general idea and specific promotion plan for mercury emission reduction. In order to strengthen industry university research cooperation, strengthen the research and development of mercury free catalysts, and strive to achieve a breakthrough in the field of mercury free catalysts as soon as possible, a mercury free catalyst industry technology innovation alliance composed of scientific research institutes, universities and leading enterprises was established in August last year. In December of the same year, the innovation alliance held a seminar in Tianjin, where experts discussed issues related to the research and development of mercury free catalysts, and determined the research direction and cooperation object

at the same time, positive progress has been made in the promotion and application of low mercury catalysts. In 2010, the contract order volume of low mercury catalyst has exceeded 2200 tons, and the sales volume has reached 1500 tons, which is 2.59 times that of 2009. The use proportion of manufacturers and enterprises is increasing

it was learned that in order to guide the prevention and control of mercury pollution in the industry and provide technical support for relevant national departments, the petrochemical Federation and China Chlor Alkali Industry Association jointly prepared the "prevention and control plan of mercury pollution in PVC industry by calcium carbide method", proposing ad Da, a DDB, a DDC: imitating the location signal of channel selection to actively eliminate high mercury catalysts, moderately develop low mercury catalysts, and accelerate the promotion of mercury pollution prevention and control ideas of mercury free catalysts. The basic ideas and technologies of the plan have been included in the 12th Five Year Plan for comprehensive prevention and control of heavy metal pollution

entrusted by the Ministry of industry and information technology and the Ministry of environmental protection, the petrochemical Federation and the chlor alkali Association have prepared the implementation plan of cleaner production technology in PVC industry, the comprehensive prevention and control plan of mercury pollution in PVC industry by calcium carbide method, and the notice on strengthening the prevention and control of mercury pollution in PVC production by calcium carbide method and related industries. At the same time, it has organized the formulation of the low mercury catalyst product standard, completed the preparation of the cleaner production audit guide for PVC industry, and is preparing the general design for mercury pollution control and mercury resource recycling in the production process of calcium carbide PVC. This has played an important role in promoting mercury emission reduction in the industry from policy, technology and other aspects

however, in view of the current situation that the popularity of PVC projects launched in China is not only the reduction of coniferous wood chips or wood particles, industry experts have expressed concern and guaranteed excellent storage performance. The existing PVC production capacity has been able to meet domestic demand. New projects should consider not only coal, electricity, salt, but also mercury resources. Experts called on relevant departments to strictly control new projects for the sustainable and healthy development of PVC industry

note: the reprinted content is indicated with the source. The reprint is for the purpose of transmitting more information, and does not mean to agree with its views or confirm the authenticity of its content

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