380
UEATONOMATURAL GASANIO NG
天然气及其凝液的利用
石油与天然气化工
CHEMICALENGINEERING OF OIL & GAS
CO，水合反应循环增压实验研究
胡祥江祁影霞施军镍
（上海理工大学能源与动力工程学院）
2014
摘要针对CO2作为天然工质优越的制冷特性以及水合物技术在多领域的发展前景，利用水合物相平衡转折温度下压力急剧上升的特点，通过流程的创新设计，提出了一种利用CO2水合物交替生成与分解的过程来实现增压的循环系统。基于CO2复叠制冷低温级的热力学分析，结合对相平衡转折温度的考虑，通过实验表明，在套管式反应器中，0.3%（质量分数)SDS的动力学添加剂较之4%（质量分数)THF热力学添加剂更能促进CO2水合物的生成，在一2℃、1.4MPa的前提下，合成时间为60min：在0.3%SDS的溶液中温度越低易于水合物生成，其临界温度接近于一2℃，低于一2℃时，溶液结冰会堵塞管道；两套管式反应器交替运行，得到了一2℃合成、10 ℃分解的最佳循环温度，55min的最短循环时间，分解后的高压C02气体经冷凝节流后达到了 36℃的低温。
关键词CO2循环增压系统水合物套管式反应器
文献标志码：A
中图分类号：TE122
D0I：10.3969/i.issn.1007-3426.2014.04.008
Experimental study oncirculationpressurizationof carbondioxidehydrationreaction
Hu Xiangjiang,QiYingxia，Shi Junke
(University of Shanghai for Scienceand Technology,Shanghai 200093,China)
Abstract : Based on the excellent cooling characteristics of CO 2 as a natural working substance and development prospects in the field of many hydrate technology , using the characteristics of pressure rising sharply under the phase equilibrium transition temperature of hydrate , through the innovation design of process , the carbon dioxide hydrate formation and decomposition alter. nate process is used to realize the pressurization system . Based on thermodynamic analysis of car. bon dioxide level cascade refrigeration and combining with the phase equilibrium temperature , the experiment results show that the dynamics of o.3wt% SDS additives is more advantageous to promote the formation of carbon dioxide hydrate in double-tube reactor compare with 4wt% THF thermodynamics additive. The synthesis time is 60 minutes at 1.4 MPa and 2 C . In SDS solu-tion of O.3w t% , lower temperature is more beneficial to the formation of hydrate , the critical temperature is close to 2 C . When it is lower than 2 C, the solution icing may block pipe. When the two sets of tube reactors are used alternately , the optimum cyclic temperature is as fol. lows : the synthesis temperature is 2 C , the decomposition temperature is 1o C , and the shor-test cycle time is 55 minutes . The carbon dioxide gas under high pressure is decomposed by con -densationthrottletoalowtemperatureof36℃.
Key words : carbon dioxide, circulation pressurization system , hydrate, double-tube reactor 基金项目：上海市教育委员会科研创新项目“分子动力学法预测新一代制冷替代工质”（11YZ119）。
作者简介：胡祥江（1987一），男，江西上饶人，上海理工大学能源与动力工程学院在读硕士研究生，主要从事CO0：水合物方面的科研工作。地址：(200093）上海市杨浦区军工路516号上海理工大学。E-mail：huxiangjiang_2009@163.com