CAJ | 학술논문

GB／T 16157－1996中推荐的采样测试方法，仅适用于颗粒物浓度高于50 mg／m3的固定污染源采样。伴随着排放标准的提高，污染物控制技术与工艺日趋完善，部分示范工程颗粒物排放在线数据显示低于1 mg／m3，沿用原方法采样经常出现样品失重现象，从而无法得到烟气中真实的低浓度粉尘排放浓度。经多次试验研究，通过采用一体式低浓度采样头和大流量采样泵，增加采样体积、预留空白样、选用优质滤膜、对采样枪进行伴热改造等措施，针对低浓度排放测试的准确性和可靠性得到很大的提高，该法已在实际工程上得到应用，为我国颗粒物低排放测试技术的规范与成熟提供借鉴。
GB／T 16157－1996중추천적채양측시방법，부괄용우과립물농도고우50 mg／m3적고정오염원채양。반수착배방표준적제고，오염물공제기술여공예일추완선，부분시범공정과립물배방재선수거현시저우1 mg／m3，연용원방법채양경상출현양품실중현상，종이무법득도연기중진실적저농도분진배방농도。경다차시험연구，통과채용일체식저농도채양두화대류량채양빙，증가채양체적、예류공백양、선용우질려막、대채양창진행반열개조등조시，침대저농도배방측시적준학성화가고성득도흔대적제고，해법이재실제공정상득도응용，위아국과립물저배방측시기술적규범여성숙제공차감。
The traditional testing method mentioned in GB /T 16157-1996 only apply to stationary source with more than 50 mg/m3 particulate concentration.Pol ution control technologies and processes are maturing with the strict emission standards, the online data of some demonstration projects show the emissions of particulate are less than 1 mg/m3 .There are often occurring weightlessness phenomenon if fol owing the traditional testing methods, thus it cannot get real concentration of dust emission in flue gas.Through repeated experiments and practice, the weightlessness problem can be effectively solved by using one-piece sampling-head and high flow sampling pump, increasing the sampling volume, reserving blank samples, choosing high-quality filter membrane and heating sampling gun, and the accuracy and reliability have been greatly improved.The method has been applied in practical engineering, provided reference for practical engineering.