当前位置:主页 > 管理论文 > 工程管理论文 >

新型有机叔胺溶剂吸收二氧化碳性能的研究

发布时间:2018-01-26 06:36

  本文关键词: 新型胺溶剂 吸收 二氧化碳 平衡溶解度 CO_2吸收热 动力学 出处:《湖南大学》2016年博士论文 论文类型:学位论文


【摘要】:经济发展使人类对化石燃料的需求不断增加,导致二氧化碳(CO_2)的排放量逐年提高,造成越来越严重的全球"温室效应"等气候问题,但与此同时CO_2又是潜在的资源(尤其是在油田注气驱油等新领域的应用)。因而良好的CO_2捕获技术不但能有效缓解气候问题还能带来可观的经济效益。有机胺溶液捕获CO_2技术因其良好的吸收和解吸性能成为CO_2捕获的首选方法,而开发具有较好吸收性能的吸收溶剂是有机胺溶液捕获CO_2技术的关键。4-二乙基-2-丁醇(DEAB)、1-二乙氨基-2-丙醇(1DEA2P)、1-(2-羟乙基)哌啶(1-(2-HE)PP)和1-(2-羟乙基)吡咯烷(1-(2-HE)PRLD)作为新的有机胺溶液,其CO_2吸收性能是其能否作为新型CO_2吸收溶剂的关键因素。因此本文主要探究了 DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD溶液在不同温度条件下的pKa,其与C02反应过程中的各个离子随C02负载变化的离子形成曲线,其C02平衡溶解度,其吸收CO_2的吸收热,以及其与C02反应的动力学进行研究;同时与MEA及MDEA等工业应用较为成熟的吸收溶剂的CO_2吸收性能进行全面的比较,并评估该四种溶剂作为CO_2商业化溶剂的可能性。本文实验测得了DEAB、1DEA2P、1-(2-HE)PP 和 1-(2-HE)PRLD 溶液在不同温度下的 pKa,发现四种溶液的pKa值随着温度的升高而降低,同时建立了四种胺溶液的pKa随温度变化的关系式,结果发现这四个关系式能够很好的预测这四种胺溶液在不同温度下的 pKa 值。为了更好地理解 DEAB、1DEA2P、1-(2-HE)PP 和 1-(2-HE)PRLD 溶液吸收CO_2过程以及建立完整的DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD溶液溶液吸收CO_2体系的气液平衡模型,本文探究了 DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD溶液与C02反应体系中各个离子浓度随C02负载变化的曲线,同时探究了 DEAB、1DEA2P、1-(2-HE)PP 和 1-(2-HE)PRLD 溶液吸收 CO_2 过程中各个离子与pH之间的二维关系模型;同时还建立其了 DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD溶液,pH值与温度之间的三维体系模型。发现该二维关系模型以及三维关系模型能够很好的用于该四种胺溶剂的吸收CO_2过程中各个离子的变化曲线的呈现和预测。本文同时测量2mol/L的DEAB、1DEA2P、1-(2-HE)PP 和 1-(2-HE)PRLD 溶液在温度为 298-313K,CO_2 分压为 8-101kPa 的条件下的CO_2平衡溶解度。结果发现这四种胺溶液的CO_2平衡溶解度随着温度的升高而降低,随着CO_2分压的增加而增加。运用吉布斯赫姆霍兹方程估计了 DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD溶液吸收CO_2的吸收热的值分别为-41.4 kJ/mol、-43.6kJ/mol、-34kJ/mol 及-34.2kJ/mol。利用电化学快速分析仪测得DEAB溶液在浓度为100-900mol/m3,温度为298-313K的条件下吸收CO_2的一级反应速率常数ko,1DEA2P溶液在浓度为120-751mol/m3,温度为298-313K的条件下吸收CO_2的一级反应速率常数k0;1-(2-HE)PP溶液在浓度为200-1000mol/m3,温度为298-313K的条件下吸收CO_2的一级反应速率常数k0。1-(2-HE)PRLD溶液在浓度为200-1000mol/m3,温度为298-313K的条件下吸收CO_2的一级反应速率常数k0。同时建立了 DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD溶液吸收CO_2的动力学模型。发现该模型能够很好地预测DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD溶液吸收CO_2过程中的反应速率常数,DEAB、1DEA2P、1-(2-HE)PP与1-(2-HE)PRLD的平均偏差分别为5.8%、8.0%、8.3%与 6.1%。为了全面评估 DEAB、1DEA2P、1-(2-HE)PP 与 1-(2-HE)PRLD 溶液作为 CO_2捕获领域潜在的溶剂,通过与MEA和MDEA溶液等传统的商业化溶剂的比较,对比了四种胺溶液和几种常用的胺溶剂的CO_2平衡溶解度,反应动力学参数,以及CO_2吸收热;结果发现这四种胺溶液在CO_2平衡溶解度,反应动力学以及CO_2吸收热都表现出良好的性能。综上所述,DEAB、1DEA2P、1-(2-HE)PP和1-(2-HE)PRLD这四种胺溶液可以作为新一代潜在的吸收溶剂或者混合溶剂中的一种或几种溶剂。
[Abstract]:Economic development makes the human demand for fossil fuels is increasing, resulting in carbon dioxide (CO_2) emissions increased year by year, resulting in more serious global greenhouse effect and climate issues, but at the same time, CO_2 is a potential resource (especially the new application field of oil in the oil gas injection) and good. CO_2 capture technology not only can effectively alleviate the problem of climate but also bring considerable economic benefits. The organic amine solution capture CO_2 CO_2 capture technology become the preferred method because of its good absorption and desorption performance, and has good solvent absorption can absorb development is the key to.4- organic amine solution to capture CO_2 technology two -2- ethyl butanol (DEAB). 1- two ethylamino -2- propanol (1DEA2P), 1- (2- hydroxyethyl) piperidine (1- (2-HE) PP) and 1- (2- hydroxyethyl) pyrrolidine (1- (2-HE) PRLD) solution as a new organic amine, the absorption performance of CO_2 is its ability to act as a The key factors of new CO_2 absorption solvents. So this paper mainly discusses the DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) PRLD solution under different temperature conditions pKa, C02 and the various ion ion in the reaction process with C02 load changes of the curve, the equilibrium solubility of C02, the absorption of CO_2 absorption of heat, and the reaction kinetics were studied with C02 and MEA and MDEA; and industrial applications such as the mature absorption solvent of CO_2 absorption performance to conduct a comprehensive comparison, and evaluation of the four kinds of solvents as potential CO_2 commercial solvent. This experiment measured the DEAB, 1DEA2P, PP and 1- (2-HE) 1- (2-HE) PRLD solution at different temperatures pKa, found that four of the pKa value of the solution decreased with the increase of the temperature, relation and set up four types of amine solution pKa varies with temperature, the results show that the four relations can be a good predictor of the four An amine solution at different temperatures and pKa values. In order to better understand the DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) PRLD CO_2 solution absorption process and the establishment of a complete DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) CO_2 system model of gas-liquid equilibrium absorption of PRLD solution in this paper. To explore the DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) of each ion concentration in the solution with C02 PRLD reaction system with C02 load curve, and explore the DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) two-dimensional model between each ion and pH in the process of CO_2 absorption PRLD at the same time to establish its solution; DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) PRLD solution, pH value and temperature model. The relationship between the two-dimensional model and three-dimensional model can be very good for the curve of each ion of the four kinds of amine solvent absorption in the process of CO_2 presentation and At the same time. The prediction measurement of 2mol/L DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) PRLD solution for 298-313K in temperature, CO_2 partial pressure is CO_2 solubility under the condition of 8-101kPa. The results showed that CO_2 equilibrium solubility of these four kinds of amine solution decreases with the increase of temperature, increased with the increase of CO_2 partial pressure. Using Gibbs Helmholtz equation to estimate DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) value of absorption heat absorption of CO_2 PRLD solution were -41.4 kJ/mol, -43.6kJ/mol, -34kJ/mol and -34.2kJ/mol. by electrochemical analyzer measured DEAB solution at a concentration of 100-900mol/m3, the first-order reaction rate constant temperature Ko under the condition of 298-313K CO_2 absorption, 1DEA2P solution at a concentration of 120-751mol/m3, the first-order reaction rate constant K0 temperature under the condition of 298-313K absorption of CO_2; 1- (2-HE) PP solution at a concentration of 200-1000mol/m3, temperature As a reaction rate constant k0.1- 298-313K absorption under the condition of CO_2 (2-HE) PRLD solution at a concentration of 200-1000mol/m3, the first-order reaction rate constant k0. temperature under the condition of 298-313K CO_2 absorption and the establishment of the DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) CO_2 dynamic model for the absorption of PRLD solution. This model can well predict the DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) absorption rate constant CO_2 in the process of PRLD solution DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) the average deviation of PRLD was 5.8% and 8% respectively, 8.3% and 6.1%. in order to evaluate DEAB 1DEA2P, 1-, PP (2-HE) and 1- (2-HE) PRLD solution as CO_2 capture the potential areas of solvent, by comparing the traditional commercial solvent with MEA and MDEA solution of the comparison of four kinds of amine solution and several amine solvent CO_2 equilibrium solubility, kinetic parameters, and CO_2 absorption Heat; the results show that the four amine solution in CO_2 equilibrium solubility, reaction kinetics and heat absorption CO_2 show good performance. To sum up, DEAB, 1DEA2P, 1- (2-HE) PP and 1- (2-HE) PRLD these four kinds of amine solution can be used as a new generation of potential absorption of one or several solvents or solvent in the mixed solvent.

【学位授予单位】:湖南大学
【学位级别】:博士
【学位授予年份】:2016
【分类号】:X701;TQ028.14

【参考文献】

相关期刊论文 前10条

1 赵毅;张自丽;;电厂二氧化碳捕集研究现状及展望[J];工业安全与环保;2012年06期

2 Sang-Sup Lee;Seong-Man Mun;Won-Joon Choi;Byoung-Moo Min;Sang-Won Cho;Kwang-Joong Oh;;Absorption characteristics of new solvent based on a blend of AMP and 1,8-diamino-p-menthane for CO_2 absorption[J];Journal of Environmental Sciences;2012年05期

3 那艳清;符开云;梁志武;奚飞;刘贺磊;李文生;TONI WACHWUTHIKUL P T;;θ环填料塔中单乙醇胺吸收CO_2传质性能研究[J];湖南大学学报(自然科学版);2011年03期

4 代岚;武士威;李国德;;二氧化碳回收技术及应用前景[J];辽宁化工;2010年10期

5 周莉骅;刘有智;李光明;;MDEA吸收CO_2的活化剂及吸收设备研究进展[J];化工中间体;2010年06期

6 李新春;孙永斌;;二氧化碳捕集现状和展望[J];能源技术经济;2010年04期

7 李现勇;孙永斌;李惠民;;国外IGCC项目发展现状概述[J];电力勘测设计;2009年03期

8 王泉清;;有机胺溶液吸收CO_2的研究评述[J];山东师范大学学报(自然科学版);2008年01期

9 高洁;郭斌;;温室气体二氧化碳的回收与资源化[J];污染防治技术;2007年01期

10 黄黎明;陈赓良;;二氧化碳的回收利用与捕集储存[J];石油与天然气化工;2006年05期

相关硕士学位论文 前2条

1 彭淑婧;烟气中二氧化碳化学吸收法回收技术的研究[D];河北科技大学;2007年

2 杨明芬;膜吸收法和化学吸收法脱除电厂烟气中二氧化碳的试验研究[D];浙江大学;2005年



本文编号:1464955

资料下载
论文发表

本文链接:https://www.wllwen.com/guanlilunwen/gongchengguanli/1464955.html


Copyright(c)文论论文网All Rights Reserved | 网站地图 |

版权申明:资料由用户d18ec***提供,本站仅收录摘要或目录,作者需要删除请E-mail邮箱bigeng88@qq.com