| 耦合变压吸附简化模型的提纯回用氢网络协调优化 |
| 邓春1, 周业扬1, 江苇1, 冯霄2 |
| 1. 中国石油大学(北京) 化学工程学院, 重质油国家重点实验室, 北京 102249; 2. 西安交通大学 化学工程与技术学院, 西安 710049 |
| Coordinated optimization of hydrogen networks with purification reuse coupled with a shortcut model of the pressure swing adsorption |
| DENG Chun1, ZHOU Yeyang1, JIANG Wei1, FENG Xiao2 |
| 1. State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum-Beijing, Beijing 102249, China; 2. School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China |
摘要:
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| 摘要采用变压吸附（PSA）装置提纯含氢流股并回用至加氢过程，可以缓解炼油厂氢气亏缺的现状。该文采用了变压吸附简化模型，构建了提纯回用氢网络模型，以氢公用工程用量为目标函数，建立优化的数学模型，使用商业优化软件GAMS（general algebraic modeling system）平台建模，用DICOPT（discrete and continuous optimizer）作为求解器。案例研究结果表明：变压吸附装置存在最优入口氢气纯度。当吸附和解吸压力比增大、吸附选择性减小时，变压吸附的氢气回收率增大，氢公用工程用量减小。从氢网络优化的角度来说，一味地增加变压吸附装置入口流股氢气纯度以提高回收率的手段并不可取。 | |||
| 关键词 ：过程系统,氢网络,优化,数学规划法,变压吸附(PSA),提纯回用 | |||
| Abstract：Pressure swing adsorption (PSA) is used to purify hydrogen streams with the upgraded streams reused by hydroprocessing units to increase the hydrogen supply in refineries. This study used a PSA shortcut model to construct a hydrogen network design with purification reuse. The mathematical model used the minimum hydrogen utility as the objective function with the commercial optimization software GAMS (general algebraic modeling system) to solve the problem with DICOPT (discrete and continuous optimizer) as the solver. The results of a case study show that the PSA device has the optimal inlet hydrogen purity. As the adsorption and desorption pressure ratio increases and the adsorbent selectivity decreases, the PSA hydrogen recovery increases and the hydrogen utility decreases. The hydrogen network optimization shows that designers should not blindly increase the PSA inlet hydrogen purity to enhance the hydrogen recovery. | |||
| Key words：process systemhydrogen networkoptimizationmathematical programmingpressure swing adsorption (PSA)purification reuse | |||
| 收稿日期: 2015-08-25 出版日期: 2016-07-22 | |||
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| 基金资助:国家“九七三”重点基础研究资助项目（2012CB720500）；国家自然科学基金资助项目（21576287，U1162121）；中国博士后科学基金资助项目（2015M570215）；中国石油大学（北京）科研基金资助项目（2462015YQ0305，2462015BJB02） | |||
| 引用本文: |
| 邓春, 周业扬, 江苇, 冯霄. 耦合变压吸附简化模型的提纯回用氢网络协调优化[J]. 清华大学学报（自然科学版）, 2016, 56(7): 735-742. DENG Chun, ZHOU Yeyang, JIANG Wei, FENG Xiao. Coordinated optimization of hydrogen networks with purification reuse coupled with a shortcut model of the pressure swing adsorption. Journal of Tsinghua University(Science and Technology), 2016, 56(7): 735-742. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2016.24.018或 http://jst.tsinghuajournals.com/CN/Y2016/V56/I7/735 |
图表:
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| 图１ 提纯回用氢网络模型 |
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| 表１ 氢源数据 |
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| 表２ 氢阱数据 |
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| 表３ 压缩机数据 |
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| 图２ PSA 入口氢气纯度为７６．０２％的优化氢网络 |
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| 图３ PSA 的入口氢气纯度对氢公用工程用量的影响 |
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| 图４ PSA 入口氢气纯度为８０％的优化氢网络 |
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| 图５ PSA 的吸附和解吸压力比对氢公用工程用量的影响 |
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| 图６ PSA 的吸附选择性对氢公用工程用量的影响 |
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