| 摘要: |
| 针对制药行业干燥废气处理不完全、异味大、余热无法回收等问题，本文设计了一种由热管、水盘管、热泵等组成的废气零排放热泵系统。通过闭式除湿、废气处理和加热升温，保证了气体的循环再利用质量，从而实现近零排放和余热回收。系统性能实验研究结果显示：在平均送风温度为65.1 ℃，相对湿度为21.1%和风量为12 000 m3/h的条件下，该系统的热泵机组性能系数（COP）为4.7，系统单位功耗除湿量（SMER）为8.5 kg/(kW?h)。对循环气体成分分析显示，热泵机组对废气中挥发性有机物（VOCs）的吸收率为73.2%，且在一个生产周期内系统内不存在不凝性易燃易爆气体的累积。 |
| 关键词: 热泵 热管 干燥 废气处理 闭式循环 |
| DOI： |
| 投稿时间：2022-02-21 修订日期：2022-04-22
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| 基金项目:科技助力经济2020重点专项项目“高寒高纬地区多级回热热泵干燥技术研究与示范”（SQ2020YFF0426550）资助。 |
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| Experimental Study on Performance of Zero-emission Heat Pump System for Exhaust Gas after Drying Process in Pharmaceutical Industry |
|
Yu Yingrui1,2, Wei Juan1, Li Weizhao1,2, Zhang Chong1, Li Bo1,2, Yang Luwei1
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| (1.Technical Institute of Physics and Chemistry, Chinese Academic of Sciences;2.University of Chinese Academic of Sciences) |
| Abstract: |
| This study develops a zero-emission heat pump system consists of heat pipes, water coils, and heat pumps for exhaust gas to mitigate the incomplete treatment, disgusting smell, and unrecoverable heat of exhaust gas after the drying process in the pharmaceutical industry. The quality of gas recycling and reuse is guaranteed by closed-loop dehumidification, waste gas treatment, and heating, thereby achieving near-zero emissions and recovery of waste heat. The experimental results of the system performance show that when the average temperature of the supply air is 65.1 °C, the relative humidity of the supply air is 21.1%, the air volumetric flow rate is 12 000 m3/h, the coefficient of performance of the heat pump unit is 4.7, and the specific moisture extraction rate of the system is 8.5 kg/(kW?h). The composition of the circulating gas shows that 73.2% of the volatile organic compounds are absorbed, and no non-condensable, flammable, or explosive gases are accumulated in the system during each production period. |
| Key words: heat pump heat pipe drying waste gas treatment closed circulation |
