Rectification and recovery system of alcohol with high purity
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A recovery system and high-purity technology are applied in the field of high-purity alcohol rectification recovery systems to achieve the effects of reasonable method and design, simple operation and high purity
Inactive Publication Date: 2011-04-13
ZHEJIANG JINAN PHARMA MACHINERY +1
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Problems solved by technology
[0007] Aiming at the defects of the current alcohol recovery tower, the present invention provides a high-purity alcohol rectification recovery system
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Embodiment 1
[0020] Investigate the effect of tail gas suction on rectification effect, The untreated dilute alcohol is pumped into the distillation kettle, the minimum must not be lower than the steam heating pipe in the kettle, and the highest must not exceed the tower kettle 2 / 3 of the diameter, open the condenser and cooler water inlet valves, and confirm that there is water flowing normally, Fully open the return valve, then turn on the tail gas suction pump, and open the steam valve for heating. During the implementation process, instrument parameters such as start-up time, feed time, stabilization time, tower top temperature, condensation outlet temperature, and condenser return water temperature were recorded. The results are shown in Table 1. A total of six samples were taken from one sample, and the sample numbers were A1, A2, A3, A4, and A5. The ethanol content, relative density, and absorbance were measured respectively, and the experimental data were recorded. The experime...
Embodiment 2
[0025] Investigate the influence of tail gas suction speed on rectification effect, The untreated dilute alcohol is pumped into the distillation kettle, the minimum must not be lower than the steam heating pipe in the kettle, and the highest must not exceed the tower kettle 2 / 3 of the diameter, open the condenser and cooler water inlet valves, and confirm that there is water flowing normally, Fully open the return valve, then open the steam valve for heating. The specific implementation steps are the same as in Example 1. In the implementation process, when the concentration of the finished product meets the requirements, the first sample is taken, and one sample is taken per hour later. The first three samples (the tail gas flow rate is 0.8m 3 / h) Adjust the tail gas flow rate after taking, and still take one sample per hour (the tail gas flow rate is 0.5m 3 / h), the sample numbers are respectively B1, B2, B3, B4, B5, B6, B7, measure its ethanol content, relative density...
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Abstract
The invention discloses a rectification and recovery system of alcohol with high purity. The system is characterized in that the top of a stripping tower (2) is connected with a fusel collector (3) which is connected with a rectifying tower (4) through a pipeline; the top of the rectifying tower (4) is connected with a finished product collector (5) the top of which is connected with the top of a condenser (6) through a pipeline; the lower end of the condenser (6) is connected with the upper part of the finished product collector (5) through a pipeline; the lower end of the finished product collector (5) is connected with a finished product cooler (8) through a pipeline; and the tail end of a tail gas condenser (7) is connected with a tail gas sorption pump (9). The invention has the beneficial effects that the problem that ultraviolet absorbency exceeds the standard is solved, real-time and exact monitoring is realized, the product quality is ensured, and the purity of the recycled product is high; the system is energy-saving and water-saving, has the characteristics of reasonable design and automated control, is simple and convenient to operate, and meets requirements of good manufacturing practice (GMP).
Description
technical field [0001] The invention relates to a new device for solving the problem of excessive absorbance of recovered alcohol, in particular to a high-purity alcohol rectification recovery system. Background technique [0002] With the rapid development of traditional Chinese medicine in my country, alcohol is used as the main extraction solvent, and the consumption is increasing day by day. Therefore, reclaiming the discarded dilute alcohol and ensuring the quality of the recovered alcohol to make it meet the reuse standard for reuse are the main ways for the majority of traditional Chinese medicine pharmaceutical companies to reduce production costs and improve economic benefits. The alcohol recovery tower is composed of six parts: the tower kettle, the tower body, the condenser, the cooler, the buffer tank, and the high-level storage tank. Its working principle is that the boiling point of alcohol is lower than that of other solutions. When the boiling point of alcoho...
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