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Selective catalytic reduction (SCR) injection system and method

A technology of injection system and injection method, which is applied in the direction of mufflers, engine components, machines/engines, etc., can solve problems such as troublesome installation and layout, complex structure, and difficult maintenance, and achieve low cost, simple system structure, and reduced failure rate Effect

Inactive Publication Date: 2015-12-16
彭小飞 +3
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  • Abstract
  • Description
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Problems solved by technology

However, in the prior art, the urea solution is often delivered to the nozzle by the urea pump for spraying. Its structure is complex, the failure rate is high, and there are many parts that need to be arranged separately. ,high cost

Method used

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  • Selective catalytic reduction (SCR) injection system and method
  • Selective catalytic reduction (SCR) injection system and method
  • Selective catalytic reduction (SCR) injection system and method

Examples

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Embodiment ： pic 1-2， 1 system no. 1 example

[0025] Example: such as Figure 1-2 As shown, the present invention provides a first embodiment of a selective catalytic reduction injection system, which includes: a gas supply module A, a urea pressure tank module B connected to the output of the gas supply module A, and a urea pressure tank module B The output is connected to the urea injection module C, wherein the gas supply module A, the urea pressure tank module B, and the urea injection module C are modular in design and independent of each other.

[0026] The gas supply module A includes an air compressor 1 and an air delivery pipe 12 connecting the air compressor 1 and the tank body 8. An air cleaner 2 is provided between the air delivery pipe 12 and the first double valve 5. The air compressor 1 provides compressed air to build up the pressure of the urea pressure tank module B, and the air filter 2 stabilizes and filters the compressed air to provide stable and clean compressed air for the urea pressure tank module B....

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Abstract

The invention discloses a selective catalytic reduction (SCR) injection system and method. The SCR injection system comprises a gas supply module, a urea pressure tank module connected with the output of the gas supply module, and a urea injection module connected with the output of the urea pressure tank module, wherein the gas supply module, urea pressure tank module and urea injection module are subjected to modular design and are mutually independent. By canceling the urea pressure pump in the traditional meaning, the system has the advantages of simple structure and low cost. All the parts except the urea nozzle are integrated onto the urea pressure tank bracket. Being different from the scattered structure of the traditional SCR system, the system disclosed by the invention is modular, is convenient for installation and maintenance, has lower failure rate, and is easy for overall arrangement and convenient for overhaul.

Description

Technical field [0001] The invention relates to a selective catalytic reduction injection system and method. Background technique [0002] Selective Catalytic Reduction (SCR) technology is a technology aimed at NOx in the exhaust emissions of diesel vehicles, that is, under the action of a catalyst, the reducing agent ammonia or urea is injected to reduce the NOx in the exhaust gas to N2 and H2O to achieve elimination The purpose of NOx, and NOx is a highly toxic pollutant that endangers human health and destroys the atmospheric environment. Its harm is slowly accumulated without knowing it, and its harm is hidden and lasting. It can cause a series of obvious NOx syndromes, such as chest tightness, dizziness, poor respiratory system, and Alzheimer's disease, so that after the onset of the disease, the source of the disease is unknown. Therefore, NOx is also called the "invisible killer." However, in the prior art, the urea solution is often delivered to the nozzle through the ur...

Claims

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Application Information

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IPC IPC(8): F01N3/28
CPCY02A50/20
Inventor 彭小飞许新曹文浩
Owner 彭小飞
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