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Heat pump azeotropic rectification process and equipment for fuel ethanol

A technology of azeotropic rectification and fuel ethanol, which is applied in the preparation of organic compounds, organic chemistry, chemical instruments and methods, etc., can solve the problems of environmental pollution and high energy consumption, and achieve the goal of reducing the total investment cost and production cost of the project Effect

Inactive Publication Date: 2003-05-14
XI AN JIAOTONG UNIV
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Problems solved by technology

The traditional azeotropic distillation fuel ethanol production process has large output, good quality, stable production, and mature technology. Although its energy consumption is lower than that of extractive distillation and the currently popularized and applied molecular sieve preparation method, its disadvantage is that the energy consumption is still too high. High, and the entrainer will cause environmental pollution when the production operation is improper

Method used

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  • Heat pump azeotropic rectification process and equipment for fuel ethanol
  • Heat pump azeotropic rectification process and equipment for fuel ethanol

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] see figure 1 , the present invention comprises ethanol dehydration tower 1, and the tower top of ethanol dehydration tower 1 is connected with the suction side of heat pump steam compressor 5 through pipeline, and the exhaust side of heat pump steam compressor 5 is respectively through pipeline and tower kettle reboiler 9 The inlet port of the tower kettle reboiler 7 is connected, and the outlet port of the tower kettle reboiler 9 and the outlet port of the tower kettle reboiler 7 are connected with the inlet port of the condensate stratifier 4 through a pipeline. , in the condensate stratifier 4, the outlet end of the upper layer is connected with the top reflux end of the ethanol dehydration tower 1 through the pipeline, and the outlet end of the lower layer is connected with the middle inlet end of the entrainer recovery tower 2 through the pipeline...

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Abstract

The heat pump azeotropic rectification equipment includes ethanol dewatering tower, entrainer recovering toward and ethanol recovering tower. The top vapor from the three towers is pressurized and heated before used as the heat source of the bottom reboilers, and there are no top condensator, boiler heating system and circular pump, and the whole stream system is closed and these result in low production cost, zero exhaust and environment protection.

Description

1. Technical field [0001] The invention relates to an anhydrous ethanol distillation process and device, in particular to a fuel ethanol heat pump azeotropic distillation process and device. 2. Background technology [0002] According to the national standards of the People's Republic of China "denatured fuel ethanol" (GB 18350-2001) and "ethanol gasoline for vehicles" (GB18351-2001), fuel ethanol is anhydrous ethanol that has no denaturant and can be used as fuel. Denatured fuel ethanol is obtained by fermenting and distilling starch and sugar as raw materials. After dehydration, denaturant is added to modify it. The denatured fuel ethanol is blended with gasoline blending component oil to produce ethanol gasoline for vehicles. [0003] To promote the use of ethanol gasoline, on the one hand, reduce the consumption of gasoline, that is, oil; Improve the city's atmospheric environment and water vapor content, and reduce air pollution. Ethanol gasoline technology for vehic...

Claims

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Application Information

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IPC IPC(8): C07C29/80C07C31/08
Inventor 顾兆林刘宗宽郁永章王有正唐家信裴宝山
Owner XI AN JIAOTONG UNIV
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