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Layered crushing urea mixing device

A mixing device and urea technology, which is applied in the direction of muffler, exhaust device, exhaust treatment, etc., can solve the problems of oversized mixer, uneven mixing of ammonia gas, easy crystallization of urea, etc.

Active Publication Date: 2022-04-22
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing structure has problems such as easy crystallization of urea, uneven mixing of ammonia gas, excessive exhaust back pressure of the mixer structure, and excessive size of the mixer.

Method used

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  • Layered crushing urea mixing device
  • Layered crushing urea mixing device
  • Layered crushing urea mixing device

Examples

Experimental program
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Embodiment Construction

[0023] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "...

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Abstract

The layered crushing urea mixing device comprises a barrel, a supporting plate, a rotational flow pipe, a perforated pipe, a crushing plate and a blanking cap, a first mounting hole is formed in the barrel, a second mounting hole is formed in the supporting plate, and the rotational flow pipe communicates with the first mounting hole and the second mounting hole; the supporting plate divides the interior of the cylinder into a gas inlet cavity and a gas outlet cavity, tail gas can enter the cyclone pipe through the gas inlet after entering the gas inlet cavity, and a urea solution enters the cylinder through the cyclone pipe, can make contact with the tail gas and passes through the porous pipe, the crushing plate and the blocking cover along with the tail gas. Through holes are formed in the perforated pipe, so that urea can be crushed; the atomization level of urea can be greatly improved through the crushing plate and the blanking cap, and the risk of urea crystallization is reduced.

Description

technical field [0001] The application relates to the technical field of automobile exhaust treatment devices, in particular to a layered crushing urea mixing device. Background technique [0002] Automobile exhaust contains harmful gases such as CO (carbon monoxide), HC (hydrocarbons) and NOx (nitrogen oxides). In order to protect the environment and human body, it is necessary to purify automobile exhaust. [0003] Selective catalytic reduction technology (SCR) is a treatment process for NOx in automobile exhaust. Specifically, after the exhaust gas enters the SCR device, the reducing agent ammonia or urea is sprayed into it, and under the action of the catalyst, NOx will be reduced into nitrogen and oxygen. [0004] In conventional SCR equipment, in order to ensure the mixing effect of urea solution and exhaust gas, a mixer is installed in front of the SCR carrier. Small urea particles prevent crystallization of urea aqueous solution, and at the same time, atomized ammo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20F01N3/28
CPCF01N3/2066F01N3/28F01N2610/14F01N2610/1486F01N2610/02F01N2570/14Y02T10/12Y02A50/20
Inventor 张旭陈增响何伟娇周稳超易军
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER
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