ASTM D6646-03(2014)
测定颗粒和丸状活性炭加速硫化氢漏过容量的标准试验方法

Standard Test Method for Determination of the Accelerated Hydrogen Sulfide Breakthrough Capacity of Granular and Pelletized Activated Carbon

被代替

标准号

ASTM D6646-03(2014)

发布

2003年

发布单位

美国材料与试验协会

替代标准

ASTM D6646-03(2022)

当前最新

ASTM D6646-03(2022)

 

 

引用标准

ASTM D2652 ASTM D2854 ASTM D2867 ASTM E300

适用范围

5.1 This method compares the performance of granular or pelletized activated carbons used in odor control applications, such as sewage treatment plants, pump stations, etc. The method determines the relative breakthrough performance of activated carbon for removing hydrogen sulfide from a humidified gas stream. Other organic contaminants present in field operations may affect the H₂S breakthrough capacity of the carbon; these are not addressed by this test. This test does not simulate actual conditions encountered in an odor control application, and is therefore meant only to compare the hydrogen sulfide breakthrough capacities of different carbons under the conditions of the laboratory test.

5.2 This test does not duplicate conditions that an adsorber would encounter in practical service. The mass transfer zone in the 23 cm column used in this test is proportionally much larger than that in the typical bed used in industrial applications. This difference favors a carbon that functions more rapidly for removal of H₂S over a carbon with slower kinetics. Also, the 18201;% H₂S challenge gas concentration used here engenders a significant temperature rise in the carbon bed. This effect may also differentiate between carbons in a way that is not reflected in the conditions of practical service.

5.3 This standard as written is applicable only to granular and pelletized activated carbons with mean particle diameters less than 2.5 mm. Application of this standard to activated carbons with mean particle diameters (MPD) greater than 2.5 mm will require a larger diameter adsorption column. The ratio of column inside diameter to MPD should be greater than 10 in order to avoid wall effects. In these cases it is suggested that bed superficial velocity and contact time be held invariant at the conditions specified in this standard (4.77 cm/sec and 4.8 sec). Although not covered by this standard, data obtained from these tests may be reported as in paragraph 12 along with additional information about column diameter, volume of carbon, and volumetric flow rate used.

5.4 For pelletized carbons, it is felt that the equivalent spherical diameter of the pellet is the most suitable parameter for determining the appropriate adsorption column inside diameter. The equivalent spherical diameter is calculated according to the following equation.

where:
d	=	the diameter, and
h	=	the length of the pellet in mm.

An average of 50 to 100 measurements is recommended to determine the average length of a pellet. Annex A3 is a table to guide the user in selecting bed diameter and flow rates from ty......

ASTM RR-D28-1005 1996 D2854-活性炭表观密度的测试方法 ASTM RR-D28-1007 2010 D2862-颗粒活性炭粒度分布的标准测试方法 ASTM RR-E01-1007 1993 E1568-火试重量法测定活性炭中金的试验方法 ASTM RR-D28-1010 2020 D6851-用活性炭测定接触pH值的测试方法 ASTM RR-D28-1006 2010 D3802-活性炭球盘硬度的标准测试方法 DIN EN 13649 E:1999-10 固定源辐射 专用气体有机化合物质量浓度的测定 活性炭和溶剂解吸法（草案） ASTM RR-D28-1008 2018 D8176-活性炭机械振实密度的标准测试方法 DIN EN 13649 E:2011-05 固定源辐射 专用气体有机化合物质量浓度的测定 活性炭和溶剂解吸法（草案） ASTM RR-D28-2001 2023 D5158-通过喷气筛分测定细网和粉末活性炭粒度的试验方法 ASTM RR-D28-2000 2023 D2867-活性炭水分的测试方法