Vehicle urea that can degrade nitrogen oxides and prevent low-temperature crystallization

A low-temperature crystallization, vehicle-use urea technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, chemical elements of heterogeneous catalysts, etc., can solve the problem of substandard exhaust emissions and low urea conversion rate , the increase of automobile fuel consumption and other problems, to achieve the effect of improving the conversion rate, improving the dispersion, and increasing the conversion rate

Active Publication Date: 2022-07-12
HENAN HONGKANG ENVIRONMENTAL PROTECTION TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for generating vehicle urea that can degrade nitrogen oxides and prevent low-temperature crystallization, so as to solve the problem of existing urea NO X Technical problems such as low conversion rate, high freezing point, increased vehicle fuel consumption, and substandard exhaust 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of urea for vehicles that can degrade nitrogen oxides and prevent low-temperature crystallization, the urea comprises the following components in parts by weight, 10 parts of urea, 19 parts of ammonium sulfate, 4 parts of ethanolamine, 3 parts of dimethicone, 3 parts of propylene Triol 4, 0.5 part of alkyl glucoside, 100 parts of ultrapure water, 0.8 part of nano-catalyst, 2 parts of silicon type antifreeze; wherein, the preparation method of nano-catalyst is as follows:

[0026] 1) Take equal mass of ammonium metavanadate and citric acid, prepare a solution with a mass fraction of 0.9-1.0% with deionized water, add 0.45% sodium metaaluminate according to the mass of the solution, and add nano-scale WO during the stirring process 3 / TiO 2 The mixed powder was subjected to ultrasonic vibration for 45 minutes, placed in a temperature-controlled electric furnace for calcination at a high temperature of 560 °C for 1.5 hours, and then naturally cooled to...

Embodiment 2

[0034] Example 2: The difference from Example 1 is:

[0035] A vehicle urea capable of degrading nitrogen oxides and preventing low-temperature crystallization, the urea comprises the following components in parts by weight: 13 parts of urea, 23 parts of ammonium sulfate, 7 parts of ethanolamine, 5 parts of dimethicone, 6 parts of glycerin parts, 1.5 parts of alkyl glucoside, 100 parts of ultrapure water, 1 part of nano-catalyst, and 3 parts of silicon type antifreeze; wherein, the preparation method of nano-catalyst is as follows:

[0036]1) Take 90g ammonium metavanadate and 90g citric acid, dissolve in 1000ml deionized water to prepare a solution, add 0.48% sodium metaaluminate according to the mass of the solution, and add nano-scale WO during the stirring process 3 / TiO 2 The mixed powder was subjected to ultrasonic vibration for 30 minutes, placed in a temperature-controlled electric furnace, and calcined at a high temperature of 560 °C for 1.5 hours, and then naturally...

Embodiment 3

[0044] Example 3: The difference from Example 1 is:

[0045] A vehicle urea capable of degrading nitrogen oxides and preventing low-temperature crystallization, the urea comprises the following components in parts by weight: 12 parts of urea, 213 parts of ammonium sulfate, 5 parts of ethanolamine, 5 parts of dimethyl silicone oil, 6 parts of glycerin 1 part of alkyl glucoside, 100 parts of ultrapure water, 1 part of nano-catalyst, and 3 parts of silicon-type antifreeze; wherein, the preparation method of nano-catalyst is as follows:

[0046] 1) Take the same mass of ammonium metavanadate and citric acid, prepare a solution with a mass fraction of 1.0% with deionized water, add 0.45-0.50% sodium metaaluminate according to the mass of the solution, and add nano-scale WO during the stirring process. 3 / TiO 2 The mixed powder was subjected to ultrasonic vibration for 45 minutes, placed in a temperature-controlled electric furnace for calcination at a high temperature of 555 °C fo...

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 vehicle urea capable of degrading nitrogen oxides and preventing low-temperature crystallization, comprising the following components in parts by weight: 10-13 parts of urea, 19-23 parts of ammonium sulfate, 4-7 parts of ethanolamine and dimethyl silicone oil 3 to 5 parts, 4 to 6 parts of glycerol, 0.5 to 1.5 parts of alkyl glucoside, 100 parts of ultrapure water, 0.8 to 1 part of nano catalyst, and 2 to 3 parts of silicon antifreeze. To solve the existing urea NO X The technical problems of low conversion rate, high freezing point, increased fuel consumption of automobiles and substandard exhaust emissions.

Description

technical field [0001] The invention relates to the technical field of vehicle urea solution production, in particular to a vehicle urea capable of degrading nitrogen oxides and preventing low-temperature crystallization. Background technique [0002] Vehicle urea is a high-purity urea solution developed in recent years and suitable for SCR system (selective catalytic reduction system). After the urea solution is vaporized, it decomposes to produce NH 3 , under the action of catalyst, NH 3 with NO in exhaust X The reaction produces harmless H 2 O and N 2 . [0003] However, urea is decomposed into NH in automotive diesel engines. 3 The intermediate product NO produced in the process x , NO x It is the general term for all nitrogen oxides, which are extremely harmful to human health. NO x The formed secondary pollutant ozone is also particularly harmful to the human respiratory system, because particulate matter suspended in the air can cause lung and heart disease a...

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): B01D53/94B01D53/56B01J23/30F01N3/20
CPCB01D53/9418B01J23/30B01J23/002B01J35/023F01N3/2066B01D2251/2067B01D2258/012B01J2523/00F01N2610/02B01J2523/47B01J2523/55B01J2523/69Y02T10/12
Inventor 李丰登孙长城桑书梅
Owner HENAN HONGKANG ENVIRONMENTAL PROTECTION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap