Single-stage rectification equipment to separate air
A single-stage, rectifying tower technology, applied in the direction of cold treatment separation, lighting and heating equipment, solidification, etc., can solve the problems of not being able to follow the rectification process, achieve less metal material consumption, improve rectification efficiency, and lower energy consumption Effect
Active Publication Date: 2020-02-14
孙克锟
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Problems solved by technology
Obviously, the traditional air separation equipment has a history of one hundred years since its birth. Due to the insufficient development of science and technology at that time, it is impossible to follow the rectification process of "chemical engineering principle".
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[0018] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0019] Figure 1(a)(b) An example of an air separation design method for a single-stage rectification device.
[0020] Figure 1(a) An example of an air separation process in a single-stage rectification plant.
[0021] After the compressed feed air that has been removed of moisture, carbon dioxide and hydrocarbons is cooled by the main heat exchanger 2 through the pipeline 1, all or part of the feed air enters the rectification tower 12 through the pipeline 3, valve 4, and pipeline 5 for reboiling Reboiler 13 is used as the heat source of the low-temperature liquid oxygen in the tower kettle, and the raw material air entering the reboiler 13 is cooled and liquefied, and at the same time, the low-temperature liquid oxygen in the tower kettle is heated, and the oxygen content in the liquid increases rapidly; the cooled and liquefied raw air After ...
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The invention belongs to the field of low-temperature rectification, relates to a method for preparing oxygen, nitrogen and argon by applying the principle of the low-temperature rectification to separate air, and provides a method for separating the air through single-stage rectification equipment. The method for separating the air through the single-stage rectification equipment is suitable for liquid equipment for mass preparation of a liquid oxygen product containing 99.5% of the oxygen, and meanwhile a pure nitrogen product containing 10 ppm-3 ppm of the oxygen can further be prepared. The method for separating the air through the single-stage rectification equipment has the advantages that a pure argon product can be prepared through an attached argon column, and the extraction efficiency of the oxygen, the nitrogen and the argon is very high; after impure nitrogen is circulated and compressed, the impure nitrogen is adopted as expanding gas; a pressure oxygen nitrogen product is prepared through compressed liquid oxygen and liquid oxygen inside a low-temperature liquid pump; the energy consumption of the equipment is very low, and the consumption of metallic materials is little.
Description
technical field [0001] The invention belongs to the field of cryogenic rectification and air separation, and uses the principle of cryogenic rectification to separate air and prepare oxygen, nitrogen and argon. Background technique [0002] Since 1895, when German scientists created the world's first oxygen generator through throttling and double-stage rectification, the development of air separation technology has gone through a century; from the development history of more than one hundred years, air separation The development of technology has not got rid of the pattern of traditional theory; the lack of stripping section in the pressure column is the fundamental reason restricting the development of air separation technology, and the setting of the stripping section in the pressure column is the development direction of air separation technology. [0003] In 1902, the German scientist Linde manufactured the world's first 10Nm3 / h oxygen generator, which was obtained throu...
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IPC IPC(8): F25J3/02
CPCF25J3/04084F25J3/0409F25J3/04357F25J3/04624F25J3/0466F25J3/04721F25J2200/02
Inventor 孙克锟
Owner 孙克锟