Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-purity nitrogen equipment

A high-purity nitrogen and equipment technology, applied in lighting and heating equipment, liquefaction, solidification and other directions, can solve the problem of high energy consumption, achieve the effect of low energy consumption, simple process configuration and material saving

Active Publication Date: 2012-07-18
苏州制氧机股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-purity nitrogen equipment with a liquid-air subcooler usually only uses oxygen-enriched oxygen after expansion to subcool the liquid air, which consumes a lot of energy.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-purity nitrogen equipment
  • High-purity nitrogen equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] 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.

[0026] Specific embodiments of the present invention will be described below with reference to the drawings.

[0027] Such as figure 1 , the 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.

[0028] The pretreatment system includes a filter 1, an air compressor 3, and a cold dryer 5 interconnected by pipelines. The cold dryer 5 is equipped with a high-efficiency three-stage oil removal filter to ensure that the oil content of the air outlet is less than 0.003PPm, which reduces the load on the purification system 7 and ensures the safe and efficient operation of the purification system 7. The application of the cold dryer 5 also makes the normal pressure dew...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides high-purity nitrogen equipment which comprises a preprocessing system, a purifying system and a fractionating tower, wherein the fractionating tower comprises a turboexpander, a main heat exchanger and a subcooler for heat exchange, a rectifying tower and a condensation evaporator, the rectifying tower comprises an upper tower and a lower tower, the outlet of the purifying system is connected with the air inlet of the lower tower through a pipeline, and the pipeline passes through the main heat exchanger; the lower tower is also provided with an oxygen-enriched liquid air outlet for oxygen-enriched liquid air generated by rectification to flow out, the oxygen-enriched liquid air outlet is connected with the purifying system through a pipeline, and the pipeline passes through the main heat exchanger; and the upper tower is provided with a nitrogen gas outlet, and the pipeline connected with the outlet passes through the main heat exchanger. In the invention, the pipeline of enriched oxygen, the pipeline of raw material air and the pipeline of nitrogen gas are simultaneously connected with the main heat exchanger, so that the cold quantities of the enriched oxygen and the nitrogen gas are fully utilized, and the high-purity nitrogen equipment saves the energy and protects the environment; meanwhile, the enriched oxygen is sent into the expander for refrigeration, and the high-purity nitrogen equipment has the advantages of reasonable structure, material saving and simple flow configuration.

Description

technical field [0001] The invention relates to a high-purity nitrogen device, in particular to a device for producing high-purity nitrogen by adopting a low-temperature rectification method. Background technique [0002] Nitrogen is an industrial gas with a wide range of applications. It is mainly used in electronic packaging / chemical processing / lighting / heat treatment / food packaging / food freezing / metal manufacturing / glass production / petroleum refining / rubber crushing / biopharmaceuticals, etc. [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, rectification has a history of hundreds of years, and it is widely used in metallurgy, chemical industry, glass, electronics and other industries. The raw material of high-purity nitrogen equipment is air, the production method is mainly low-temperature rectification, and the main consumption of the produ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F25J3/04
CPCF25J3/044F25J3/0423F25J3/04284F25J3/04393F25J2200/72F25J2240/04F25J2245/02
Inventor 胡玖益张小元
Owner 苏州制氧机股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com