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It is urgent to strengthen the control of VOCs and other toxic gas pollution
2017-03-02807
With the continuous expansion of the national industrial field and the large demand for chemical products, harmful substances also follow. In the environmental access conditions for modern coal chemical construction projects (Trial) issued by the Ministry of environmental protection, the planning and layout, project site selection, pollution prevention and control, and environmental impact of modern coal chemical production and construction projects in the process of new construction, reconstruction and expansion have been formulated In terms of conditions, it is proposed that before the emission standard of pollutants in coal chemical industry is issued, the flue gas of heating furnace, tail gas of acid gas recovery filter device and VOCs filter device shall be temporarily controlled according to the relevant requirements of emission standard of pollutants in petroleum refining industry or emission standard of pollutants in petrochemical industry according to the type of products produced by the project.
Since 2016, the Ministry of environmental protection has approved the report on the environmental impact of the 4 billion cubic meters / year coal to natural gas project of Inner Mongolia Beikong Jingtai Energy Development Co., Ltd., the report on the environmental impact of the 4 billion standard cubic meters / year coal to natural gas project of Suxin energy and Fengfeng Co., Ltd., and the report on the environmental impact of the 800000 tons / year coal to polyolefin project jointly invested by China Power Investment and total , environmental impact report of 2 million tons / year indirect coal liquefaction demonstration project of Inner Mongolia Yitai Coal to liquid Co., Ltd. and other coal chemical projects, all of which require the use of equipment leakage detection and repair technology to strengthen VOCs, odor and toxic and harmful gas pollution control measures
VOCs discharged in the production process of modern coal chemical projects are either from the coal itself, or from the reaction intermediates, or from the intermediates produced in the storage process, as well as the substances produced in the sewage filter treatment process, which have the characteristics of complex components, many kinds of toxic and harmful substances, and high content. Due to different production processes and process characteristics, the composition of VOCs in different production types of modern coal chemical industry is quite different. In addition, in the actual operation of coal chemical projects, the odor or even odor is an important factor affecting the relationship between enterprises and local residents. Therefore, for modern coal chemical projects, measures should be taken to effectively control the escape and discharge of VOCs, odorous substances and toxic and harmful pollutants in the dynamic and static sealing points of equipment, organic liquid storage and handling, sewage filtration system, coal preparation, coal storage and other links.
Industry insiders estimate that under the strong pressure of the policy, the VOCs governance market will usher in explosive growth during the 13th Five Year Plan period, and the market size is expected to exceed 150 billion yuan. "With the issuance and implementation of emission standards for key industries and the establishment of VOCs emission charging system, the VOCs governance industry will enter the fast lane of development." Hao Zhengping, Secretary General of the waste gas purification Committee of China Environmental Protection Industry Association, said.
It is reported that the current stage of VOCs governance industry is similar to the desulfurization industry more than ten years ago. After more than ten years of survival of the fittest, there are only a few dozen desulfurization enterprises left. Therefore, experts suggest that, even if driven by policies, VOCs governance enterprises should do a good job in technology and talent reserve in advance, straighten out financing channels, and meet the arrival of VOCs governance market.
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