二甘醇胺法与MEA法相比有何优点？

A、吸收剂—50～70％的二甘醇胺水溶液Absorbent - 50 ~ 70% diethylene glycol amine solution

B、脱酸气情况：用于高酸气含量的天然气净化，比其它醇胺溶剂腐蚀性小，溶液浓度高，循环量少，再生耗热少。Deacidification gas: used for natural gas purification with high acid content, less corrosive than other amine solvents, high solution concentration, less circulation, less heat consumption.

C、应用：DGA水溶液冰点在-40℃以下，可在极寒冷地区用Application: DGA solution with freezing point below -40℃ can be used in extremely cold areas.

D、以上都不对

此题为判断题(对，错)。

A. 溶液浓度低

B. 适于沙漠及干旱地区

C. 不适于寒冷地区

D. 循环量高

此题为判断题(对，错)。

A、吸收剂—15～25％(wt)的一乙醇胺水溶液。溶液的浓度通常根据腐蚀性和操作经验来选择。Absorbent - 15-25% (wt) monoethanolamine solution. The concentration of solution is usually chosen according to corrosiveness and operating experience.

B、脱酸气情况：特点为化学吸收过程，受压力影响小，当压力在3～7kg/cm2仍能达到管输天然气要求。Deacidification gas: it is characterized by chemical absorption process and is less affected by pressure. When the pressure is 3 ~ 7kg/cm2, it can still meet the requirements of pipeline natural gas transportation.

C、缺点：蒸气压高，挥发性强，腐蚀性强。Disadvantages: high vapor pressure, strong volatility, strong corrosion.

D、应用：此法常用于脱硫，应用广泛。Application: this method is widely used in desulfurization.

B、四

C、五

D、六

A. 伯

B. 仲

C. 叔

D. 季

A. 天然气

B. 液体丙烷

C. 石油

D. 空气

A、吸收剂—25～30％(wt)的二乙醇胺水溶液Absorbent - 25 ~ 30% (wt) diethanolamine solution

B、脱酸气情况：适用于高压、高酸气浓度、高H2S/CO2比值的天然气净化，当H2S分压达到4kg/cm2，比MEA法经济。Deacidification gas: it is suitable for gas purification with high pressure, high concentration of acid gas and high H2S/CO2 ratio. When H2S partial pressure reaches 4kg/cm2, it is more economical than MEA method.

C、蒸发损失小，腐蚀性小，所需再生热量少。Evaporation loss is small, corrosion is small, the need for regenerative heat.

D、以上都不对