| 王开亭,李小斌,张红娜,曲凯阳,王琳彬,李凤臣*.适用于集中供热高温管路的表面活性剂减阻性能研究[J].实验力学,2025,40(1):61~79 |
| 适用于集中供热高温管路的表面活性剂减阻性能研究 |
| Study on the drag reduction performance of surfactants in high-temperature pipelines of central heating to find suitable drag reducers |
| 投稿时间：2023-11-01 修订日期：2023-12-25 |
| DOI：10.7520/1001-4888-23-226 |
| 中文关键词: 表面活性剂 高温高压 供热系统 减阻 |
| 英文关键词:surfactant high temperature and high pressure heating systems drag reduction |
| 基金项目:国家自然科学基金面上项目(51976238, 52176160) |
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| 摘要点击次数: 231 |
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| 中文摘要: |
| 提高集中供热系统的输送效率，降低能源损耗，对达成节能减排目标，提高经济效益具有重要意义。目前集中供热受限于高温的管路环境，缺乏适用的管路减阻剂。针对此问题，本文以耐高温的表面活性剂为对象，实验研究了温度、浓度及流量对质量比为1∶1的十六烷基三甲基溴化铵/水杨酸钠(CTAB/NaSal)、芥酸丙基三甲基氯化铵/水杨酸钠(ETAC/NaSal)、十八烷基甜菜碱/水杨酸钠(C18-betaine/NaSal)以及十六烷基甜菜碱/水杨酸钠(C16-betaine/NaSal) 4种试剂在高温高压回路中的减阻效率。研究结果表明，600 mg/L CTAB/NaSal(1∶1)溶液在30 ℃~60 ℃可达到60%的减阻率；5000 mg/L ETAC/NaSal(1∶1)溶液在40 ℃~90 ℃的减阻率在50%以上；2000 mg/L C18-betaine/NaSal(1∶1)溶液的有效减阻温度为40 ℃~80 ℃，此时的减阻率基本在40%以上;4000 mg/L C16-betaine/NaSal(1∶1)溶液在50 ℃~80 ℃的减阻率基本在40%以上;高温和高流速会破坏胶束结构，降低表面活性剂的减阻性能，而高浓度溶液可以在一定程度上克服高温高压环境下减阻剂失效带来的影响。 |
| 英文摘要: |
| Improving the transmission efficiency of central heating systems and reducing energy consumption are crucial for achieving energy-saving and emission-reduction targets, as well as improving economic benefits. At present, central heating is limited by the high temperature pipeline environment, where suitable pipeline drag reducers are lacking. Addressing this issue, this study experimentally investigates the drag reduction rate of cetyltrimethylammonium bromide/sodium salicylate (CTAB/NaSal), propyltrimonium erucate/sodium salicylate (ETAC/NaSal), octadecyl betaine/sodium salicylate (C18-betaine/NaSal), and cetyl betaine/sodium salicylate (C16-betaine/NaSal) in high-temperature and high-pressure circuits. The research findings indicate that a 600 mg/L solution of CTAB/NaSal (1∶1) achieves a drag reduction rate of up to 60% at temperatures ranging from 30 ℃ to 60 ℃; a 5000 mg/L solution of ETAC/NaSal (1∶1) exhibits drag reduction rates exceeding 50% between 40 ℃ and 90 ℃; a 2000 mg/L solution of C18-betaine/NaSal (1∶1) effectively has drag reduction rates generally above 40% from 40 ℃ to 80 ℃; and a 4000 mg/L solution of C16-betaine/NaSal (1∶1) maintains drag reduction rates mostly above 40% between 50 ℃ and 80 ℃. High temperatures and high flow rate can disrupt micellar structures, thereby reducing the drag-reducing performance of surfactants. Nevertheless, high-concentration solutions can partially mitigate the impact of drag reducer failure in high-temperature and high-pressure environments. |
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