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超重力法处理室内过量CO2的实验研究

师小杰,刘有智,祁贵生,谷德银   

  1. 中北大学山西省超重力化工工程技术研究中心,山西 太原 030051
  • 出版日期:2014-04-05 发布日期:2014-04-05

Experimental research on high gravity method treatment of excessive indoor CO2

SHI Xiaojie,LIU Youzhi,QI Guisheng,GU Deyin   

  1. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology,North University of China,Taiyuan 030051,Shanxi,China
  • Online:2014-04-05 Published:2014-04-05

摘要: 分析了几种常用的室内处理CO2气体方法的优缺点,其中传统方法吸收过程复杂且设备密封要求较高,虽然膜分离技术选择性较好,但是常温下压降为5~30 kPa,稳定性差。基于超重力技术运行稳定,且湿床压降仅为150 Pa的优势,本文提出了超重力法对室内低浓度的过量CO2气体进行处理,通过考察超重力因子、气液比、气体浓度对脱除效果的影响,确定了适宜的实验脱除条件:超重力因子131,气液比60。在适宜的实验脱除条件下,超重力法对室内不同浓度CO2气体的单次吸收率均达到26%以上且反应时间在0.1 s以内,经过8次循环CO2气体浓度从13750 mg/m3下降到800 mg/m3以下,脱除率达到90%以上。因此,采用超重力法处理室内过量CO2气体在技术上是可行的。

关键词: 超重力法, 室内过量CO2, 超重力因子, 脱除率

Abstract: This paper analyzes the advantages and disadvantages of several common methods dealing with indoor CO2. The traditional method of absorption is complex and requires a high degree of sealing device. Membrane separation technology has good selectivity,but at room temperature pressure drop is 5~30kPa and stability is poor. Based on the advantage of running stability and wet bed pressure drop of only 150Pa of high-gravity technology,this paper presents a method of using high-gravity technology to process indoor low concentration excessive CO2. By investigating high-gravity factor,gas-liquid ratio and gas concentration on removal effect,the the appropriate removal experiment condition is as follows:high-gravity factor is 131 and gas-liquid ratio is 60. Under the appropriate removal experiment condition,single cycle absorption rate for indoor different concentrations of CO2 reaches more than 26%,reaction time is less than 0.1s,CO2 concentration decreases from 13750 mg/m3 to less than 800 mg/m3 after 8 cycles and removal rate is up to 90%. Therefore,the high-gravity method to deal with indoor excessive CO2 is feasible in technology.

Key words: high gravity method, indoor excessive CO2, high gravity divisor, removal rate

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