التفاصيل البيبلوغرافية
| العنوان: |
基于实际冷、热复合曲线的制苯和碳八装置热联合研究. |
| العنوان البديل: |
Heat Integration Scheme for Benzene Production and C8 Units Based on Actual Cold and Hot Composite Curves. (English) |
| المؤلفون: |
李振东, 张 丹, 杨敏博, 冯 霄 |
| المصدر: |
Journal of East China University of Science & Technology; 2023, Vol. 49 Issue 1, p47-54, 8p |
| مصطلحات موضوعية: |
PINCH analysis, HEAT exchangers, HEAT transfer, ENERGY consumption, PAYBACK periods, CHEMICAL plants |
| الملخص (بالإنجليزية): |
Heat integration across different units is an effective method to improve energy utilization in chemical plants. In order to precisely obtain the energy-saving potential across the units and improve the fluctuation resistance of the retrofitting schemes, a retrofitting method based on actual cold and heat composite curves is developed. Based on the industrial data of benzene production and C8 units from a petrochemical company, the heat exchanger networks of the two units are simulated in Aspen HYSYS, and pinch analysis is carried out with Aspen Energy Analyzer. Considering the unsatisfactory heat transfer of the original benzene production unit and safety constraints, new retrofitting schemes for the heat exchanger network of benzene production unit are proposed to reduce the steam consumption. The heat exchanger network of the C8 unit is not retrofitted due to the limited space in energy-saving and irrational heat transfer distribution in different heat exchangers. The energy-saving potential of heat integration between the two units is analyzed by constructing the actual cold and hot composite curves. The advantage of using the actual cold and hot composite curves to guide the heat integration across the two units is that it uses the actual residual energy, which is more practical than the theoretical situation such as the total composite curve. In addition, limitations and complexity of implementation are also considered to make the retrofitting schemes. The results show that the scheme with more energy saving raises the investment cost, has a slightly longer payback period, but has more long-term economic benefits. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
不同装置间的热联合是炼厂提高能量利用率的有效措施。为获得热联合的实际节能潜 力和提高改造方案的抗波动能力, 提出了基于实际冷、热复合曲线的热联合改造方法。基于某 石化企业中制苯装置和碳八装置的工业数据, 使用Aspen HYSYS 建立了换热网络模型, 并利 用Aspen Energy Analyzer 进行换热网络分析, 提出了制苯装置的换热网络改造方案, 给出了 装置间热联合的节能潜力, 并综合改造实施中的限制和改造的复杂程度, 提出了两个热联合方 案, 对方案结果进行了对比和讨论。结果表明, 节能较多的方案需要更多的投资成本, 投资回 收期略长, 但从长远来看经济效益更好. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of East China University of Science & Technology is the property of Journal of East China University of Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
