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双语推荐：MDEA溶剂

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通过对MDEA溶剂再生塔相关操作条件的模拟分析,确定该塔再沸器的最佳形式及正确安装方式,优化MDEA溶剂再生装置的工程设计。
The paper simulates and analyzes the related operating conditions of Amine Regenerator to select the right type of reboiler, then gives the best reboiler Installation method, and optimizes the Amine Regenerator Unit design.

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N-甲基二乙醇胺(MDEA)做溶剂的醇胺脱硫溶液在运行过程中经常出现发泡现象。通过单因素发泡试验和单因素排序分析,已经找出了促进MDEA脱硫溶液发泡能力和泡沫稳定性的各种因素。本文是利用Minitab软件采用田口试验设计类型进行多因素试验,根据实验结果分析多种影响因素共存条件下,各种因素对脱硫溶液发泡高度的影响,为后续多因素对脱硫溶液消泡时间的影响研究提供理论依据。
The foaming phenomenon often occures during the operation process of the Alkanolamine desulfur-izing solution which has N-MDEA as the solvent. Various factors which can promote the foaming capacity and foam stability have been found through the single factor foaming test and the single factor analysis of sorting.The article adopts the Taguchi experiment design type to conduct the multi factor test by Minitab software. The effects of various factors on the Alkanolamine desulfurizing solution foaming height with a variety of effects factors under the condition of coexistence were analysed according to the experimental results, and the theoretical basis for the subsequent research of the alkanolamine desulfurizing solution of defoaming time with multi factors was prouided.

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南化集团研究院开发的NCMA脱碳溶剂在中国石化武汉分公司干气提浓装置上进行工业应用,结果表明:与原设计的MDEA脱硫溶剂相比,采用NCMA脱碳溶剂,胺液吸收CO2的能力大幅提高,在处理量相当的情况下,干气提浓装置提浓干气吸收塔的胺液循环量由33t/h下降到14t/h;胺洗后提浓干气中CO2体积分数低于50μL/L,溶剂的H2S负荷以及脱除硫醇的能力均有所提高。
The industrial application of NCMA solvent for CO2 removal in dry gas enrichment unit in Wuhan Co.SINOPEC was reviewed.The results show that the NCMA solvent can improve CO2 ab-sorption performance compared with MDEA. At the same throughput of the unit,the recycling amine solution rate to the dry gas absorption tower is dropped from 33 t∕h of MDEA to 14 t∕h of NCMA sol-vent and the concentration of CO2 in the treated gas also decreased from 400 μL∕L to less than 50 μL∕L.Meanwhile,the H2 S loading of NCMA solvent and ability to remove mercaptan are higher than MDEA.Finally,the alkali consumption,electricity consumption and emissions of alkali waste of the process are all reduced by using NCMA solvent instead of MDEA.

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综合论述了高含硫天然气净化厂对原料气中硫化氢气体吸收处理的方法。普光天然气净化厂在气体吸收溶剂上选择了最新的MDEA脱除溶剂,在工艺上采用了两级吸收的醇胺脱硫和级间冷却技术,充分实现了硫化氢气体的全部吸收。在硫化氢气体吸收过程中,普光天然气净化厂对工艺参数也进行了优化选择,最终实现了节能减排的总方针。
Comprehensive high sour natural gas purification plant was discussed in the feed gas processing method of hydrogen sulfide gas absorption.The new solvent MDEA removal was selected for gas absorption solvent , on craft adopt two-stage absorption between alcohol amine desulfurization and cooling technology , the full absorption of hydrogen sulfide gas was fully implemented.In the process of hydrogen sulfide gas absorption , Puguang gas purification plant for the optimization of process parameters was optimized , finally, the general policy of energy saving and emission reduction were achieved.

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天然气在液化过程中需深冷至约-162℃,为了避免在低温液化过程中因结冰堵塞设备和管线,需对天然气中的酸性组分进行深度脱除。介绍了LNG工厂中原料天然气预处理工艺中的重点单元—脱硫脱碳单元的技术路线,阐述了中国石油西南油气田公司天然气研究院自主研发的CT8-23活化MDEA溶剂及CT8-25深度脱硫脱碳脱有机硫溶剂的性能及技术特点,并与国外同类溶剂Sulfinol-D的性能进行了对比。结果表明,在吸收压力仅为2MPa、吸收塔塔板数为13块的条件下,CT8-25溶剂对H2S、CO2均可达到深度脱除的要求,且对有机硫的脱除率高出Sulfinol-D约28%。
It is necessary to cool natural gas to about -162 ℃ during the liquefaction process . In order to avoid freezing plugging of the equipment and pipelines during the cryogenic liquefac-tion process ,the acidic components of natural gas should be removed deeply .The key process technology of feed gas pretreatment unit for LNG plant ,which includes desulfurization and de-carbonization is mainly introduced .The characteristics and technical advantages of CT 8-23 activa-ted MDEA solvent and CT8-25 solvent ,which can deeply remove the H2S ,CO2 and organic sul-fur ,are described .Both of the solvents have been developed independently by Research Institute of Natural Gas Technology ,PetroChina Southwest Oil & Gasfield Company .Compared to simi-lar foreign solvents Sulfinol-D ,the results show that CT 8-25 solvent can removal H2 S ,CO2 deep-ly to reach the requirements .When the absorption pressure is 2 MPa ,the plate number of ab-sorber is 13 ,and the removal rate of organic sulfur i

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MDEA法脱碳是一种多胺法吸收工艺,虽然脱碳效果不错,但由于是化学反应吸收过程,脱碳后溶剂再生需要的能耗较高。为了达到节能的效果,本文指出河北新化股份有限公司将合成氨生产中的脱碳工艺由多胺法脱碳改造为碳酸丙烯酯脱碳,同时按照碳酸丙烯酯脱碳工艺的特点,对脱碳设备也进行了技术改造。采用高通量DJ-2型塔板代换了填料,实现了吸收设备与吸收工艺的最佳匹配,并提出了塔板在漏液区域操作脱碳效果更好的新工艺。改造后,可以实现了每吨氨节约蒸汽1363kg,年节能经济价值可达2040万元。
MDEA de-carburization is a multi-amine absorption process. Although de-carburization effect is good,but because of the nature of chemical reaction,energy consumption for decarburization solvent regeneration is higher. In order to achieve saving energy,the propylene carbonate method replaced the MDEA method for decarburization in Hebei Xinhua Company. According to the characteristics of decarburization process,decarburization equipment was transformed. The DJ-2 type plate replaced the packing originally used. It achieved the best matching for CO2 removal equipment and decarburization process,and decarburization operation in the weeping area was better. After transformation,the saving of steam per ton of ammonia was 1363 kg,and annual energy saving economic value was up to 20400000 yuan.

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