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

Control system of nitrogen dioxide content

A control system and nitrogen dioxide technology, applied in the field of control systems, can solve problems such as failure to meet customer requirements, and excessive nitrogen dioxide in finished product nitric acid from the warehouse, and achieve the effect of solving excessive nitrogen dioxide content

Active Publication Date: 2012-12-19
宁夏润夏能源化工有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its index value is a guarantee index, but in the existing nitric acid production device, due to various reasons such as insufficient bleaching, high temperature or dilute acid pollution during production, the nitrogen dioxide of the finished nitric acid exceeds the standard and fails to meet customer requirements.

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
  • Control system of nitrogen dioxide content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Below in conjunction with accompanying drawing, describe in further detail:

[0013] like figure 1 As shown, the system includes a finished acid tank 1, a gas cooler 2 and a gas distributor 3. The gas distributor 1 is built in the finished acid tank 1 at a place 20 cm away from the bottom, and the finished acid tank 1 is externally connected to a negative pressure device 6, and the gas distribution The output end of the device 1 is connected with the gas cooler 2 with a pipeline, and the gas cooler 2 is connected with the compressed air main pipe 4.1 and the nitrogen main pipe 4.2 respectively. The compressed air main pipe 4.1 and the nitrogen gas main pipe 4.2 are the output ends of the previous process. Valve d5.4 and valve e5.5 for controlling the switch of compressed air main pipe 4.1 and nitrogen main pipe 4.2 are respectively set on the connection pipeline between 4.1 and nitrogen main pipe 4.2 and gas cooler 2, and valve a5 is set on the bottom pipeline of gas c...

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 a control system of a nitrogen dioxide content. The control system comprises a finished product acid tank and a gas cooler, wherein the gas cooler is provided with a valve; the finished product acid tank is internally provided with a gas distributor, and an input end of the gas distributor is connected with an output end interface of the gas cooler; and an input end of the gas cooler is respectively connected with an output end of a compressed air master pipe and an output end of a nitrogen master pipe. The control system can be used for effectively solving and controlling the problem of nitrogen dioxide exceeding caused by high temperature decomposition during producing finished nitric acid so as to meet the requirement on production.

Description

technical field [0001] The invention relates to a control system in the production process of finished nitric acid, in particular to a control system capable of controlling the content of nitrogen dioxide in the finished acid. Background technique [0002] Nitric acid is one of the most important chemical products. Nitric acid is mainly produced by ammonia oxidation in industry, and is used to make fertilizers, explosives, nitrates, etc. Pure nitric acid is a colorless transparent liquid, and industrial concentrated nitric acid is brown due to dissolved nitrogen dioxide. According to the requirements of GB / T 337.1-2002 industrial nitric acid, the technical index of concentrated nitric acid has two specifications of 98 acid and 97 acid. The mass fraction of nitrous acid contained in these two specifications is not more than 0.5% for 98 acid and 97 acid Not more than 1.0%. Its index value is a guarantee index, but in the existing nitric acid production device, due to various...

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 Applications(China)
IPC IPC(8): C01B21/38
Inventor 孙虎
Owner 宁夏润夏能源化工有限公司
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