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

Ammonium nitrate waste water treatment method

A technology for wastewater treatment and ammonium nitrate, applied in heating water/sewage treatment and other directions, can solve problems such as environmental pollution, ammonia treatment fails to meet discharge standards, etc., and achieves the effect of reducing energy consumption and improving efficiency

Inactive Publication Date: 2007-03-28
太原海力丰科技发展有限公司
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention takes "source reduction" and "recycling" as the means of priority for the minimization of ammonium nitrate wastewater treatment to solve the problem of environmental pollution caused by nitrogen and ammonia in ammonium nitrate wastewater that cannot be treated up to the discharge standard during the production process of ammonium nitrate , providing a method for ammonium nitrate wastewater treatment to meet the requirements of standard discharge and zero discharge

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
  • Ammonium nitrate waste water treatment method
  • Ammonium nitrate waste water treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Three-effect evaporation and condensation process

[0030] Feed material: secondary steam (1.4barabs) 9740kg / h (ammonium nitrate 1%, ammonia 0.5%)

[0031] Evaporation condensate: 15260kg / h (ammonium nitrate 1%, ammonia 0.5%)

[0032] Consumption: acid: 772kg / h (60% concentration)

[0033] Electricity: 28kw / h

[0034] Cooling water: 500m 3 / h(Δt=10℃)

[0035]Treated wastewater: 22422kg / h (ammonium nitrate 30ppm)

[0036] Recovered ammonium nitrate solution: 3350kg / h (25% concentration).

Embodiment 2

[0038] mechanical compression process

[0039] Feed: condensate: 25000kg / h (ammonium nitrate 1%, ammonia 0.5%)

[0040] Consumption: 60% nitric acid: 72kg / h

[0041] Electricity: 570kw / h

[0042] Treated wastewater: 22204kg / h (ammonium nitrate: 30ppm)

[0043] Recovered ammonium nitrate solution: 5568kg / h (concentration 15%).

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 an ammonium nitrate-containing waste water processing method, merging secondary steam supplementary reaction and enhanced humidifying and washing into one and performing in high efficiency, and selecting multi-effect evaporating and / or single-effect mechanical compression processing method to make ammonia and ammonium nitrate pollutants in waste water return into a neutralizer in a form of 15%-35% thick ammonium nitrate solution and recovered, and besides, the processed waste water does not contain dissociative ammonia but has an ammonium nitrate content of 15-30ppm, achieving the use requirements of entering nitric acid equipment, achieving the recycling and zero-discharge purpose; and the efficiency is largely raised and the energy consumption is largely reduced. And it is especially applied to processing the waste water in the pressure-neutralizing process of high concentration nitric acid feedstock, and also applied to other similar processes, such as processing of waste water with sulfate, phosphate, nitrate, nitrite and other nonvolatile components.

Description

technical field [0001] The invention relates to a method for treating ammonium nitrate wastewater, in particular to a method for treating ammonium nitrate wastewater which minimizes the treatment of ammonium nitrate wastewater by using "source reduction" and "recycling". Background technique [0002] In the ammonium nitrate production process, especially in the high-concentration nitric acid pressurized neutralization process, the synthesis of one ton of ammonium nitrate produces about 0.4 tons of secondary steam containing 0.4% to 1.0% of free ammonia and 0.4% to 0.6% of ammonium nitrate, and In the process of evaporation and concentration of ammonium nitrate solution, evaporative condensate with a total nitrogen content of 0.4% to 0.8% related to the concentration of ammonium nitrate is produced at the same time. waste water. The usual treatment methods do not meet the emission standards, and most manufacturers use dilution methods to discharge outside, which not only cau...

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
IPC IPC(8): C02F1/04
Inventor 武晋强台念强赵正权陈赵锁李双志
Owner 太原海力丰科技发展有限公司
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