Novel Design for Simultaneous Production of Biodiesel and Glycerol Carbonate from Soybean Oil,Industrial & Engineering Chemistry Research

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Novel Design for Simultaneous Production of Biodiesel and Glycerol Carbonate from Soybean Oil
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-11-27 , DOI: 10.1021/acs.iecr.8b04188
Cuixia Xu ₁ , Qiang Xu ₁

Affiliation

Glycerol is the byproduct of biodiesel production plants. The rapid increase of biodiesel production and demand has resulted in excessive glycerol supply in the market. Converting the cheap glycerol into high-value glycerol carbonate (GC) is a potentially valuable solution to the current worldwide excessive glycerol supply. In this paper, a novel process for simultaneous production of biodiesel and GC (SBD&GC) from soybean oil has been developed and demonstrated, where annual productivities of biodiesel and GC are 35.4 and 4.4 kilotonnes, respectively. First, the proposed SBD&GC process has been investigated, modeled, and simulated. The glycerol is used as the feedstock for the GC production; meanwhile, the byproduct of GC production, methanol, is recycled as the feedstock of the biodiesel production. Second, the optimization of the columns duties has been performed via thermal analysis analyzing the Column Grand Composite Curves (CGCC). In addition, a mathematic model for the heat integration of the SBD&GC process has been built to minimize the total utility cost. Based on the optimal solution, the detailed heat exchange network (HEN) design has been accomplished and demonstrated. Finally, economic evaluations for the newly designed SBD&GC process have also been performed. The results show that the developed SBD&GC process is very profitable, with a net present value (NPV)of $28,720,000 and a discounted cash flow return rate (DCFRR) of 60%.

中文翻译：

从豆油同时生产生物柴油和碳酸甘油酯的新颖设计

甘油是生物柴油生产厂的副产品。生物柴油生产和需求的快速增长导致市场上甘油的过量供应。将廉价的甘油转化为高价值的碳酸甘油酯（GC）是解决当前全球甘油过量供应的潜在有价值的解决方案。在本文中，已开发并证明了一种从大豆油同时生产生物柴油和GC（SBD＆GC）的新方法，其中生物柴油和GC的年生产率分别为35.4和4.4千吨。首先，对提出的SBD＆GC过程进行了研究，建模和仿真。甘油用作GC生产的原料。同时，气相色谱生产的副产品甲醇被循环用作生物柴油生产的原料。第二，色谱柱负荷的优化是通过热分析分析色谱柱大复合曲线（CGCC）来完成的。此外，已经建立了用于SBD＆GC过程热集成的数学模型，以最大程度地降低总的使用成本。基于最佳解决方案，详细的热交换网络（HEN）设计已完成并得到证明。最后，还对新设计的SBD＆GC工艺进行了经济评估。结果表明，开发的SBD＆GC工艺非常有利可图，其净现值（NPV）为28,720,000美元，折现现金流回报率（DCFRR）为60％。建立GC工艺可最大程度地降低总的使用成本。基于最佳解决方案，详细的热交换网络（HEN）设计已完成并得到证明。最后，还对新设计的SBD＆GC工艺进行了经济评估。结果表明，开发的SBD＆GC工艺非常有利可图，其净现值（NPV）为28,720,000美元，折现现金流回报率（DCFRR）为60％。建立GC工艺可最大程度地降低总的使用成本。基于最佳解决方案，详细的热交换网络（HEN）设计已完成并得到证明。最后，还对新设计的SBD＆GC工艺进行了经济评估。结果表明，开发的SBD＆GC工艺非常有利可图，其净现值（NPV）为28,720,000美元，折现现金流回报率（DCFRR）为60％。

更新日期：2018-11-28

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