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Large-tonnage high-purity nitrogen equipment

A high-purity nitrogen, high-yield technology, applied in lighting and heating equipment, liquefaction, solidification, etc., can solve the problems of large floor area and high energy consumption, and achieve the goals of reduced floor space, simple process configuration, and material saving Effect

Active Publication Date: 2012-06-13
苏州制氧机股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing high-purity nitrogen equipment occupies a large area and consumes a lot of energy

Method used

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  • Large-tonnage high-purity nitrogen equipment
  • Large-tonnage high-purity nitrogen equipment

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Experimental program
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Embodiment Construction

[0023] The principle of the invention is to use the difference in the boiling points of oxygen and nitrogen in the air to produce high-purity nitrogen by means of low-temperature rectification.

[0024] Specific embodiments of the present invention will be described below with reference to the drawings.

[0025] Such as figure 1 , the large-capacity high-purity nitrogen equipment of the present invention mainly includes a pretreatment system, a purification system 7 and a fractionation tower 15 interconnected by pipelines.

[0026] The pretreatment system includes a filter 1, an air compressor 3, and a precooler 5 interconnected by pipelines. The pre-cooler 5 adopts the Freon pre-cooling unit to cool the air to 5~10°C, and the condensed water is separated through the water separator, so as to reduce the load of the purification system, make the adsorption effect of the purification system better, and ensure the continuous safety of the equipment The requirement for the opera...

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Abstract

The invention provides large-tonnage high-purity nitrogen equipment, which comprises a preprocessing system, a purification system and a fractionating tower, wherein the preprocessing system comprises a filter, an air compressor and a cooler which are sequentially connected; the fractionating tower comprises a turbine expander, a rectifying tower and a condenser; the rectifying tower comprises anupper tower and a lower tower; the outlet of the purification system is connected to the air inlet of the lower tower through a pipeline which passes through a main heat exchanger; the lower tower isalso provided with an enriched liquid air outlet; and the preprocessing system comprises two groups of filters, air compressors and coolers, which are connected in parallel and sequentially. The equipment makes full use of the cooling production of enriching oxygen and nitrogen through simultaneously connecting an enriching oxygen pipeline, a raw material air pipeline and a nitrogen pipeline to the main heat exchanger, and has the advantages of energy saving and environmental protection.

Description

technical field [0001] The invention relates to a large-capacity high-purity nitrogen device, in particular to a device for producing high-purity nitrogen by adopting a low-temperature rectification method. Background technique [0002] With the rapid development of science and technology and economy in today's world, the demand for nitrogen in all walks of life is increasing rapidly, and the consumption is increasing, which makes the air separation equipment bigger and bigger, and the process flow is more and more. The application of high-purity nitrogen equipment is also becoming more and more extensive, and the product nitrogen pressure and purity requirements are different. It is necessary to customize high-purity nitrogen equipment that meets the needs of different applications. [0003] The current high-purity nitrogen equipment mainly uses low-temperature rectification to produce high-purity nitrogen. As a traditional means of separation and purification, rectificat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25J3/04
CPCF25J3/044F25J3/0423F25J3/04284F25J3/04393F25J3/04957F25J2200/72F25J2230/24F25J2230/40F25J2240/04F25J2245/02
Inventor 林序飞徐爱松
Owner 苏州制氧机股份有限公司
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