多效热回收催化燃烧工艺对制药企业间歇性VOCs的处理及应用

Treatment and application of multi-effect heat recovery catalytic combustion process to intermittent VOCs in pharmaceutical enterprises

为有效处理制药行业生产过程中产生大量间歇性VOCs,构建由蓄热、换热、回热、补热组成的多效热回收直接催化燃烧工艺,结合模糊PID温度控制策略,以500 g·m^(-3)铂钯合金镀在蜂窝陶瓷载体上为催化剂,处理某制药行业排放的间歇性有机废气,验证该工艺在处理制药行业排放的间歇性有机废气的可行性。结果表明:在制药行业排放的VOCs质量浓度为22mg·m^(-3)到6293 mg·m^(-3)较大波动条件下,多效热回收催化燃烧工艺能稳定有效地净化制药行业排放的有机废气,且净化后排放的VOCs浓度均小于20 mg·m^(-3),综合处理效率大于97%;随着排放的VOCs质量浓度的增高,处理效率也越接近100%;采用该工艺后,年平均运行成本为35.72×10^(4)元,与传统工艺相比,运行成本降低了27%以上。由此可知,多效热回收催化燃烧工艺能够有效处理制药行业间歇性VOCs。本研究成果可为制药行业或其他行业的间歇性VOCs治理提供参考。

In order to effectively deal with a large number of intermittent VOCs generated in the production process of the pharmaceutical industry,a direct catalytic combustion process of multi-effect heat recovery composed of heat storage,heat exchange,heat recovery and heat supplement was constructed.Combined with the fuzzy PID temperature control strategy,500 g·m−3 platinum-palladium alloy plated on honeycomb ceramic carrier was used as a catalyst to treat intermittent organic waste gas discharged from a pharmaceutical industry.As a result,the feasibility of this technology in processing intermittent organic waste gas discharged from the pharmaceutical industry was verified.The results showed that under the condition that the mass concentration of VOCs emitted by the pharmaceutical industry fluctuated greatly from 22 mg·m^(−3) to 6293 mg·m^(−3),the multieffect heat recovery in catalytic combustion process could stably and effectively purify the organic waste gas emitted by the pharmaceutical industry,and the VOCs emitted after purification.The concentration was less than 20 mg·m^(−3),and the comprehensive treatment efficiency was more than 97%.with the increase of VOCs mass concentration,the treatment efficiency was close to 100%.Using this technology,the average annual operating cost of this process was 357200 yuan,which was reduced by more than 27%compared with the traditional process.In conclusion,the multi-effect heat recovery in catalytic combustion process could effectively treat intermittent VOCs in the pharmaceutical industry,and this study can provide a reference for the treatment of intermittent VOCs in the pharmaceutical industry,and also for other industries.