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

Marine compact scr catalytic muffler

A catalytic muffler, a compact technology, applied in mufflers, machines/engines, engine components, etc., can solve problems such as noise, achieve the effects of improving uniformity, saving installation space, and improving conversion efficiency

Active Publication Date: 2016-06-29
苏州添蓝动力科技有限公司
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the background technology, the purpose of the present invention is to propose a marine compact SCR catalytic muffler, which integrates the SCR and the muffler, and simultaneously solves the noise of marine diesel engines and reduces NO X The problem of emission is avoided, and the wear between the catalyst block and the shell is avoided, the airtightness of the gas is ensured, and the convenience of catalyst installation and maintenance is improved

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
  • Marine compact scr catalytic muffler
  • Marine compact scr catalytic muffler
  • Marine compact scr catalytic muffler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4

[0036] Example 4, such as Image 6 As shown, the muffler device 6 includes an inner insertion pipe 17 and a built-in 18 plate located in the diffuser pipe 4; the inlet of the inner insertion pipe 17 is connected with the outlet of the inlet pipe 1, and the inner insertion pipe 17 There is a gap between the outlet and the built-in plate 18, and the built-in plate 18 is perpendicular to the axis of the inner insertion tube 17; hole; the outlet of the inner insertion tube 17 is provided with a sealing plate 16 for sealing the outlet of the inner insertion tube 17; In this way, although the reflection of the sound wave is reduced, the exhaust gas must experience two sudden expansions and contractions, which makes the effect of low-frequency noise better than that in Embodiment 3.

Embodiment 5

[0037] Embodiment 5, such as Figure 7 As shown, the difference between this embodiment and Embodiment 6 is that a plurality of through holes are evenly distributed on the sealing plate 16 . In this way, the total cross-sectional area of ​​the exhaust gas is increased, and the exhaust efficiency is improved. Preferably, the diameter of the upper through hole of the sealing plate 16 is equal to the diameter of the through hole on the tube wall of the inner insertion tube 17 .

[0038] In the above five embodiments of the muffler device, preferably, the cross-sections of the diffuser tube 4 and the shrink tube 5 are both rectangular.

[0039] In the above five embodiments of the muffler device, preferably, the length of the inner insertion pipe 6 is 1 / 4˜1 / 2 of the length of the diffuser pipe 4 .

[0040] In the above five embodiments of the muffler device, preferably, the diameter of the through hole on the inner insertion pipe 6 is 1 / 20-1 / 10 of the inner diameter of the exhau...

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 discloses a marine compact SCR catalytic muffler, which integrates the SCR and the muffler, solves the problem of high exhaust back pressure of marine engines, and can realize selective catalytic reduction reaction and exhaust muffler at the same time, saving installation Space and initial installation costs have obvious economic value. The catalyst is packaged in a drawer method, which solves the problem of wear and blockage of the catalyst during operation, thereby prolonging the operation life. At the same time, the inner tube and built-in plate also act as a rectifier, which can not only improve the uniformity of the airflow distribution at the front end of the catalyst, but also effectively prevent the crystallization of urea and the deposition of solid particles in the engine exhaust, thereby achieving the purpose of improving the conversion efficiency ; The exhaust undergoes two sudden expansions and contractions, which can cut most of the low-frequency noise.

Description

technical field [0001] The invention relates to an exhaust aftertreatment technology, in particular to a marine exhaust aftertreatment technology, more precisely a marine compact SCR catalytic muffler. Background technique [0002] NO X It is one of the main harmful emissions from marine diesel engines, causing serious harm to the environment and human health. IMO (International Maritime Organization) passed the 1997 Protocol of the "MARPOL73 / 78 Convention" in September 1997, and added annex VI "Regulations for the Prevention of Air Pollution from Ships", which was issued to my country on August 23, 2006 take effect. In October 2008, IMO formally passed the amendment to Annex VI of MARPOL73 / 78 "NO X Technical Regulations, for NO X Emissions proposed three stages of limit value requirements. Control the NO of the ship engine X Emissions have become an important issue in preventing air pollution from ships. [0003] Generally, marine diesel engines can meet the emission ...

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): F01N3/28F01N13/00
Inventor 吕若菁喻洋
Owner 苏州添蓝动力科技有限公司
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