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

SCR (Selective Catalytic Reduction) urea solution mixer

A technology of solution mixing and urea, applied in mixers, dissolving, machines/engines, etc., can solve the problems of unstable reduction reaction, insufficient decomposition, uneven mixing, etc., achieve complex air flow conditions, improve mixing uniformity, Avoid the effect of excessive deposition

Inactive Publication Date: 2016-11-16
WEICHAI POWER CO LTD
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the operation of the vehicle, due to poor atomization of urea, uneven mixing or insufficient decomposition, the sprayed urea droplets cannot be converted into NH3 in real time, but generate by-products, resulting in unstable reduction reaction , thus affecting the consistency and conversion efficiency of NOx emissions

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
  • SCR (Selective Catalytic Reduction) urea solution mixer
  • SCR (Selective Catalytic Reduction) urea solution mixer
  • SCR (Selective Catalytic Reduction) urea solution mixer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The core of the present invention is to provide an SCR urea solution mixer to improve the mixing uniformity of the urea solution, promote the full utilization of the urea solution, and ultimately reduce the problem of excessive deposition of urea.

[0033] Hereinafter, an embodiment will be described with reference to the drawings. In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solutions of the invention described in the claims.

[0034] see figure 1 , image 3 and Figure 4 , figure 1 Schematic diagram of the structure of the SCR urea solution mixer provided for the embodiment of the present invention; image 3 Schematic diagram of the structure of the inner tube provided by the embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of t...

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 embodiment of the invention discloses an SCR (Selective Catalytic Reduction) urea solution mixer which comprises an outer-layer tube and an inner-layer tube, wherein the inner-layer tube is arranged inside the outer-layer tube; side wall air outlet holes through which air flows out are formed in the side wall of the inner-layer tube; outer-layer tube air outlet holes through which air flows out are formed in the side wall of the outer-layer tube; the side wall air outlet holes and the outer-layer tube air outlet holes are formed in a staggered manner. According to the SCR urea solution mixer which is disclosed by the invention, as the side wall air outlet holes in the inner-layer tube and the outer-layer tube air outlet holes in the outer-layer tube are formed in the staggered manner, and air needs to flow to another side of the inner-layer tube to flow into SCR through outer-layer tube air outlet holes in the outer-layer tube after flowing outside the side wall air outlet holes in the inner-layer tube, the air flowing situation between the inner-layer tube and the outer-layer tube is relatively complex, the mixing uniformity of a urea solution is further improved, sufficient utilization of the urea solution is promoted, and the purpose of preventing urea from excessive precipitation is finally achieved.

Description

technical field [0001] The invention relates to the technical field of mixers, in particular to an SCR urea solution mixer. Background technique [0002] The basic principle of SCR (Selective Catalytic Reduction, selective catalytic reduction technology) technology is to inject fuel or add other reducing agents to the exhaust, select a suitable catalyst, and promote the reduction of the reducing agent and NO x reaction while inhibiting the oxidation of the reducing agent by oxygen in the exhaust. According to the type of reducing agent, the existing SCR technology can be divided into NH produced by the decomposition of urea 3 There are two types of urea SCR technology as reducing agent and hydrocarbon SCR technology using hydrocarbon as reducing agent. At present, the hydrocarbon SCR technology is still under further research, and there are not many practical applications; while the urea SCR technology is relatively mature, and there are many practical applications. [00...

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): B01F13/02F01N3/20B01D53/94B01F33/40
CPCB01D53/9418F01N3/2066B01D2251/2067B01D2251/2062B01F33/404B01F33/402B01F33/409B01F33/4094Y02T10/12
Inventor 王意宝张蒿王奉双王东升张晓丽张素英解家报
Owner WEICHAI POWER CO LTD
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