Application of Three-Vapor Recompression Heat-Pump Concepts to a Dimethylformamide-Water Distillation Column for Energy Savings

2014 ◽  
Vol 2 (3) ◽  
pp. 250-256 ◽  
Author(s):  
Xiaoxin Gao ◽  
Zhengfei Ma ◽  
Jiangquan Ma ◽  
Limin Yang
Keyword(s):  
Heat Pump ◽  
Distillation Column ◽  
Energy Savings ◽  
Water Distillation ◽  
Vapor Recompression

Energy-Saving Characteristics of Benzene-Toluene Mixtures in Heat Pump Distillation Column

2012 ◽  
Vol 455-456 ◽  
pp. 630-634
Author(s):  
Zheng Ming Tong ◽  
Chao Li ◽  
Jia Lei Lu ◽  
Kai Zhu
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Distillation Column ◽  
Energy Savings ◽  
Operating Conditions ◽  
Material System ◽  
Industrial Energy ◽  
Energy Consuming ◽  
Benzene Toluene ◽  
Consuming Country

China is a big industrial energy consuming country. The largest proportion of energy consuming is the operations of separation in chemical industry, and the energy consumption of the distillation is the highest in separation. Therefore, it is very important to research energy-saving issues of the process of distillation in today's circumstances of the energy shortage. This article describes the model of heat pump distillation column,and its characteristics, uses static simulation programs to simulate operating conditions in the atmospheric pressure for the benzene-toluene material system, and studys effects of the different feed states on the energy-saving of heat pump distillation column. The results will be compared with the conventional distillation column, and it was showed that for benzene-toluene system, the heat pump distillation column is more remarkable than the conventional distillation column in energy savings, and its energy saving rate can reach 46%.

Parametric study of an ethanol–water distillation column with direct vapour recompression heat pump

2009 ◽  
Vol 13 (2) ◽  
pp. 96-105 ◽  
Author(s):  
Christopher Enweremadu ◽  
Adekojo Waheed ◽  
Jeremiah Ojediran
Keyword(s):  
Heat Pump ◽  
Parametric Study ◽  
Distillation Column ◽  
Water Distillation

Study of Energy-Saving Characteristics of Propylene-Propane Mixtures in the Heat Pump Distillation Column

2011 ◽  
Vol 236-238 ◽  
pp. 1313-1316
Author(s):  
Zheng Ming Tong ◽  
Chao Li ◽  
Jia Lei Lu ◽  
Kai Zhu
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Distillation Column ◽  
Energy Savings ◽  
Operating Conditions ◽  
Material System ◽  
Saving Rate ◽  
Energy Consuming ◽  
Static Simulation ◽  
Energy Shortage

The largest proportion of energy consuming is the operations of separation in chemical industry, and the energy consumption of the distillation is the highest in separation. Therefore, it is very important to research energy-saving issues of the process of distillation in today's circumstances of the energy shortage. This article describes the model of the heat pump distillation column,and its characteristics, uses static simulation programs to simulate operating conditions in the same pressure for the propylene-propane material system, and studys effects of the different feed states on the energy-saving of heat pump distillation column. The results will be compared with the conventional distillation column, and it was showed that for propylene-propane system, the heat pump distillation column is more remarkable than the conventional distillation column in energy savings, and its energy saving rate can reach 56%.

Modelling of an ethanol-water distillation column assisted by an external heat pump

2002 ◽  
Vol 26 (12) ◽  
pp. 1055-1072 ◽  
Author(s):  
S. B. M. Oliveira ◽  
J. A. R. Parise ◽  
R. Pitanga Marques
Keyword(s):  
Heat Pump ◽  
Distillation Column ◽  
External Heat ◽  
Water Distillation

Saving Primary Energy Consumption Through Exergy Analysis of Combine Distillation and Power Plant

2012 ◽  
Vol 9 (2) ◽  
pp. 65
Author(s):  
Alhassan Salami Tijani ◽  
Nazri Mohammed ◽  
Werner Witt
Keyword(s):  
Energy Consumption ◽  
Power Plant ◽  
Heat Pump ◽  
Heat Recovery ◽  
Energy Savings ◽  
Primary Energy ◽  
Heat Pumps ◽  
Saturated Steam ◽  
Distillation Unit ◽  
Primary Energy Consumption

Industrial heat pumps are heat-recovery systems that allow the temperature ofwaste-heat stream to be increased to a higher, more efficient temperature. Consequently, heat pumps can improve energy efficiency in industrial processes as well as energy savings when conventional passive-heat recovery is not possible. In this paper, possible ways of saving energy in the chemical industry are considered, the objective is to reduce the primary energy (such as coal) consumption of power plant. Particularly the thermodynamic analyses ofintegrating backpressure turbine ofa power plant with distillation units have been considered. Some practical examples such as conventional distillation unit and heat pump are used as a means of reducing primary energy consumption with tangible indications of energy savings. The heat pump distillation is operated via electrical power from the power plant. The exergy efficiency ofthe primary fuel is calculated for different operating range ofthe heat pump distillation. This is then compared with a conventional distillation unit that depends on saturated steam from a power plant as the source of energy. The results obtained show that heat pump distillation is an economic way to save energy if the temperaturedifference between the overhead and the bottom is small. Based on the result, the energy saved by the application of a heat pump distillation is improved compared to conventional distillation unit.

Intensifying Kaibel dividing-wall column via vapor recompression heat pump

2019 ◽  
Vol 142 ◽  
pp. 195-203 ◽  
Author(s):  
Xing Qian ◽  
Kejin Huang ◽  
Haisheng Chen ◽  
Yang Yuan ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Heat Pump ◽  
Dividing Wall Column ◽  
Vapor Recompression
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