Determination of Trimethylamine TMA in Methanol by Ultra High Sensitivity Gas Chromatography
Vast chromatography: Business: chromatography equipment technology development, technology promotion and technical advice; sales: laboratory equipment.

  The MTPROP-1 zeolite type catalyst is used in the MTP plant methanol process. The catalyst requires that the content of trimethylamine (TMA) in the tower medium is less than 50 × 10-9, otherwise it will cause the poisoning of the catalyst to reduce the activity The Production of methanol in the TMA content is generally 30 × 10-9 ~ 500 × 10-9, in order to reduce the TMA content in methanol.

   Tengzhou City, the vast chromatographic equipment Technology Co., Ltd., advancing with the times to the scientific concept of development as a guide, under the leadership of Wang Xiaoying manager, relying on Xiangying Institute of Analytical Technology, chromatography and engineering research, analysis and testing center, Unit, developed ultra-high sensitivity gas chromatographic determination of trace amounts of trimethylamine TMA in methanol, the analysis of trace amounts of trimethylamine in methanol, through the test to determine the chromatographic operating conditions: column temperature 120 ℃, the detector temperature of 250 ℃, The flow rate was 150 m, the carrier gas (helium) flow was 4.0 m L / min, the tail gas (nitrogen) flow rate was 10 m L / min, the hydrogen flow rate was 2.0 m L / min, the air flow was 140 m L / min. Under the condition of chromatographic operation, the detection limit is 10 × 10-9, the linear range is 0 ~ 375 × 10-9, the relative standard deviation is 5.3% ~ 9.2%, and the recovery is 95.2% ~ 104.0%. Production run shows that the method used to monitor the production of trimethylamine in methanol analysis, MTP catalyst did not occur inactivation, the production of propylene product quality and stability.

浩瀚色谱：经营范围： 色谱仪器技术开发、技术推广及技术咨询；销售：实验室设备。

  MTP装置甲醇制丙烯工艺采用的是鲁奇MTPROP-1沸石类型催化剂,该催化剂要求入塔介质中三甲胺(TMA)的含量小于50×10-9,否则将会引起催化剂的中毒而使活性降低。生产的甲醇中TMA含量一般为30×10-9~500×10-9,为了降低甲醇中的TMA含量.

   滕州市浩瀚色谱仪器技术服务有限公司，与时俱进，以科学发展观为指导，在王晓莹经理的带领下，依托翔鹰分析技术研究所，色谱工程研究所，分析与测试中心，3个科研单位，研发出高灵敏度气相色谱仪测定甲醇中微量三甲胺TMA含量，分析甲醇中微量三甲胺的方法,通过试验,确定谱操作条件:柱温120℃,检测器温度250℃,进样口温度150℃,载气(氦气)流量4.0 m L/min,尾吹气(氮气)流量10 m L/min,氢气流量2.0m L/min,空气流量140 m L/min在选定的色谱操作条件下,低检出限为10×10-9,线性范围为0~375×10-9,相对标准偏差在5.3%~9.2%,回收率在95.2%~104.0%。生产运行表明,采用该法对生产的甲醇中三甲胺进行监控分析,MTP催化剂未发生失活,所生产的丙烯产品质量稳定。