Utilizing heat sinks for further energy efficiency improvement in multiple heat integrated five-column methanol distillation scheme

Li, Tianpei; Fu, Sheng; Zhang, Zhiwei; Sun, Jinsheng

doi:10.1016/j.cep.2017.08.008

Cited by 8 publications

(1 citation statement)

References 23 publications

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“…Their costs are adopted as: 0.084 $/kW•h for electricity, 17 $/t for steam, and 0.06 $/t for cooling water. 50 The operating cost information of each process is given in Table S5, and it can be seen that the operating cost of EHIm t DC is 46% lower than that of conventional distillation (CDiC).…”

Section: Case Studymentioning

confidence: 99%

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHIm_xDC): Basic Concept and General Characteristics

Fang

Huang³

et al. 2020

Ind. Eng. Chem. Res.

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This paper introduces a new type of distillation column structure that is externally heat-integrated in multiple diabatic distillation columns (EHImxDC). By matching the temperatures of different column sections (from the same distillation column or different distillation columns), heat integration of different distillation column sections is carried out to improve the thermodynamic reversibility of the distillation operation. First, the structure of the column shell is proposed, which may exist in this kind of distillation column. Second, the mathematical model describing EHImxDC is established, and a concise method is proposed to construct the EHImxDC structure. At last, based on two conventional distillation columns for the separation of a hexane–heptane system and a hexane–octanane system, the heat integration in two diabatic distillation columns (EHImtDC) is established. Through simulation, the results show that the reversibility of EHImtDC is significantly higher than that of the conventional distillation column. By comparing the annual operating costs of the EHImtDC and the double-effect distillation process, it is found that the EHImtDC saved about 10% of the annual operating cost compared to the double-effect distillation process. It can be seen that EHImxDC can greatly improve the second law energy efficiency of the distillation column and reduce the energy consumption of the distillation operation.

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Section: Case Studymentioning

confidence: 99%

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHIm_xDC): Basic Concept and General Characteristics

Fang

Huang³

et al. 2020

Ind. Eng. Chem. Res.

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CO2 utilization for methanol production: a review on the safety concerns and countermeasures

Feng,

Gu,

Dong

et al. 2024

Environ Sci Pollut Res

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Temperature profile movement investigation and application to a control scheme with corrected set-point for a heat integrated distillation column

Cong

Liu

2020

Chemical Engineering and Processing - Process Intensification

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Utilizing heat sinks for further energy efficiency improvement in multiple heat integrated five-column methanol distillation scheme

Cited by 8 publications

References 23 publications

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHIm_xDC): Basic Concept and General Characteristics

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHIm_xDC): Basic Concept and General Characteristics

CO2 utilization for methanol production: a review on the safety concerns and countermeasures

Temperature profile movement investigation and application to a control scheme with corrected set-point for a heat integrated distillation column

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Utilizing heat sinks for further energy efficiency improvement in multiple heat integrated five-column methanol distillation scheme

Cited by 8 publications

References 23 publications

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHImxDC): Basic Concept and General Characteristics

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHImxDC): Basic Concept and General Characteristics

CO2 utilization for methanol production: a review on the safety concerns and countermeasures

Temperature profile movement investigation and application to a control scheme with corrected set-point for a heat integrated distillation column

Contact Info

Product

Resources

About

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHIm_xDC): Basic Concept and General Characteristics

Externally Heat-Integrated Multiple Diabatic Distillation Columns (EHIm_xDC): Basic Concept and General Characteristics