浩瀚煤基合成气中硫化氢及羰基硫测定气相色谱仪GC7990

Coal-based synthesis of methanol is usually used in the catalyst vulnerable to sulfide poisoning and loss of activity, and expensive. Using low temperature methanol washing and other desulfurization process to reduce coal-based syngas sulfur content. Hydrogen sulfide and carbonyl sulfide are the main components of sulfide in coal-based synthesis gas. By determining the content of hydrogen sulfide and carbonyl sulfur in syngas after desulfurization, the technological conditions of methanol synthesis can be optimized in time to prevent catalyst poisoning and improve methanol.
Tengzhou Xiangying Analytical Technology Co., Ltd. established a gas chromatographic method for the determination of H 2 S and carbonyl sulfide in coal-based syngas using a quartz capillary column (60 m × 0.32 mm × 0μm), flame photometric detector (FPD) , The flow rate of the carrier gas (H 2) was 5 m L / min; the temperature of the initial temperature was 40 ℃, and the temperature was kept at 4 ℃ for 4 min. 100 ℃ / min rose to 120 ℃; injection system sulfur passivation treatment, standard gas diluted by the online dilution system into five concentrations, the relative retention time qualitative, external standard curve quantitative method. The logarithm of H 2 S content and the logarithm of peak area in the range of 0.07 ~ 0.30 mg / m 3 were good, the correlation coefficient r 2 was 0.9998, the logarithm of the carbonyl sulfur content and the logarithm of the peak area were 0.13 ~ 0.53 mg / m ~ 3 And the correlation coefficient r ~ 2 was 0.9979. (S / N = 3) were 0.04 mg / m ~ 3 and 0.07 mg / m ~ 3, respectively. The limits of quantitation (S / N = 10) of H 2 S and carbonyl sulfide were 0.08 mg / M 3 and 0.12 mg / m ~ 3, the recoveries were between 96% and 103%. The relative standard deviations were less than or equal to 8.1% for the same sample. The deviation was in accordance with the gas chromatograph The quantitative requirements of the law.
煤基合成甲醇通常采用的催化剂易受硫化物毒害而失去活性,且价格昂贵。采用低温甲醇洗等脱硫工艺来降低煤基合成气中硫含量。硫化氢和羰基硫是煤基合成气中硫化物的主要组成,通过测定脱硫后合成气中硫化氢和羰基硫的含量,能及时优化合成甲醇工艺条件,防止催化剂中毒,提高甲醇。
滕州市翔鹰分析技术有限公司建立了测定煤基合成气中H_2S及羰基硫含量的气相色谱分析方法,采用石英毛细柱(60 m×0.32 mm×0μm)分离,火焰光度检测器(FPD)检测,分流模式进样,分流比1∶1;气化室温度120℃;检测器温度250℃;载气(H_2)流速5 m L/min;程序升温:初温40℃,保持4 min,以100℃/min升到120℃;进样系统硫钝化处理,标气由在线稀释系统稀释成5个浓度,相对保留时间定性,工作曲线外标法定量。H_2S含量的对数与峰面积对数在0.07~0.30 mg/m3范围内线性关系良好,相关系数r2为0.9998;羰基硫含量的对数与峰面积对数在0.13~0.53 mg/m~3范围内线性关系良好,相关系数r~2为0.9979。H_2S、羰基硫的检出限(S/N=3)分别为0.04 mg/m~3和0.07 mg/m~3;H_2S、羰基硫的定量限(S/N=10)分别为0.08 mg/m~3和0.12 mg/m3~;回收率均在96%~103%之间;对同一样品重复测定8次,相对标准偏差均小于等于8.1%;与SCD气相色谱法相比较,偏差符合气相色谱法的定量要求。 XiangyingGC7990plus features:
1 excellent performance, competitive price, to meet the customers' choice
2 multi industry adaptability
3 outstanding performance in all kinds of harsh environment
INJ
A variety of sampling ports can be equipped with: packed column inlet, shunt / non shunt capillary inlet,
Hydrogen flame ionization detector (FID)
Maximum use temperature: 400
The minimum detection limit: -12 = 2.5*10 g/s (n-C16)
Linear range: 107 (+ 10%)
 
XiangyingGC7990plus特点：

1. 卓越的性能，具有竞争力的价格，满足广大客户的选择
2. 多行业适应性
   3. 在各种苛刻环境下均表现出色

进样口
多种进样口可配：填充柱进样口、分流/不分流毛细管进样口、
氢火焰离子化检测器（FID） 
***高使用温度：400℃
***小检出限：≤2.5*10 -12 g/s(n-C16)
线性范围：107（±10%）