典型化工园区VOCs排放控制技术的评价

随着化工园区挥发性有机物(VOCs)排放问题越来越受关注,化工园区VOCs排放控制技术的选择需要科学合理、客观公正的评价指标体系和评价方法.本文基于层次分析法研究VOCs排放控制技术评价指标体系的构建以及评价的方法,针对石油化工型这类典型化工园区分析了行业分布及VOCs排放特点,阐述筛选备选评价技术的方法以及评价指标权重确定的步骤,最后结合实例验证了方法.典型化工园区VOCs控制技术评价指标体系涉及技术、经济和环境影响三方面共8个指标,普遍适用于典型化工园区内企业;评价指标权重的确定需要构建各层次判断矩阵计算特征根和特征向量,一致性检验等步骤,进行层次间指标总排序得出所有指标因素对目标层的指标权重;以惠州大亚湾石化区某企业为例实施评价,结果表明,沸石转轮浓缩燃烧>活性炭浓缩燃烧>蓄热式燃烧,沸石转轮浓缩燃烧综合评价值较高,为最优控制技术.

Evaluation of VOCs emission control technologies in typical chemical industry park

As volatile organic compounds(VOCs) emission problems of chemical industry park has attracted more and more attention, the choice of VOCs emission control technology in chemical industry park needs scientific, rational, objective and fair evaluation index system and assessment methods. An evaluation index system for VOCs emission control technology based on analytic hierarchy process was developed. For a typical chemical industry park, such as petrochemical industry, the industry distribution and VOCs emission characteristics were analyzed, and screening method of alternative technologies and determination of evaluation index weight were presented. An example to verify the method was also given. Evaluation index system of VOCs emission control technologies in a typical chemical industry park involving eight indexes could be applicable to enterprises in the typical chemical industrial park. The evaluation index system was comprehensive, qualitative and quantitative. A judgment matrix was constructed to calculate the eigenvalues of the matrix and vector features, consistency check was made, and then overall ranking of inter-level indicators was made to determine the weights of all index factors relative to the objective level. Finally, Huizhou Daya Bay Petrochemical Zone was taken as an example. The preferred selection was in the following order:Rotary zeolite adsorption-concentration and combustion > Granular carbon adsorption-concentration and combustion > Regenerative combustion. Rotary zeolite adsorption-concentration and combustion was selected as the best available technology due to its highest weight among those technologies.