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Preparation method and preparation equipment of Adblue solution

A technology of urea and solution for vehicles, which is applied in separation methods, chemical instruments and methods, and dissolution, and can solve the problems of large PM2.5 emissions and environmental pollution

Inactive Publication Date: 2015-03-25
CHINA NAT ENERGY REFINING & CHEM ENG CO LTD
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  • Claims
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Problems solved by technology

Diesel engines emit large amounts of nitrogen oxides and PM2.5, causing serious environmental pollution

Method used

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  • Preparation method and preparation equipment of Adblue solution
  • Preparation method and preparation equipment of Adblue solution
  • Preparation method and preparation equipment of Adblue solution

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Experimental program
Comparison scheme
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Embodiment Construction

[0025] The core part of the preparation method of the vehicle urea solution of the present invention is "preparation of the urea solution", which adopts the dissolution of urea crystals in ultrapure water to prepare the vehicle urea solution with a concentration of 31.8-33.3%. The preparation method is a method for preparing urea solution for vehicles under the condition of forced stirring and heating.

[0026] The invention adopts two blending kettles, one for opening and one for preparation, to realize continuous production. Next, take a set of blending kettle as an example to introduce its specific preparation method:

[0027] 1. Dilute the nominal volume of 25m with ultrapure water 3 The blending kettle is cleaned twice and then dried with air to ensure that there are no impurities and water droplets in the equipment.

[0028] 2. Start the ultra-pure water feed pump, add the qualified ultra-pure water into the blending kettle, use the flow accumulation to control the amo...

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Abstract

The core part of a preparation method of the Adblue solution is the preparation method of the urea solution; the method comprises the step of dissolving urea crystal in super-pure water to prepare the Adblue solution with the concentration of 31.8-33.3%. The preparation method of the Adblue solution adopts the way of preparing the Adblue solution under forcible mixing and heating condition. The continuous production is realized by using two blending kettles, wherein one of the blending kettles is started and the other is standby. The method is simple in operation, continuous in production, high in production efficiency, high in yield, and capable of saving energy source, and the produced urea solution is strong in activity.

Description

technical field [0001] The invention belongs to the preparation of environment-friendly material tail gas purifying agent, in particular to a preparation method and preparation equipment of urea solution for vehicles. Background technique [0002] The frequent occurrence of smog weather makes environmental problems become the focus of attention of the government and the public, and motor vehicle exhaust pollution is an important cause of haze and photochemical smog pollution. Diesel engines emit large amounts of nitrogen oxides and PM2.5, causing serious environmental pollution. In order to reduce the pollution caused by diesel vehicle exhaust to the atmospheric environment, one is to improve the quality of oil products, and the other is to adopt terminal treatment, that is, to adopt SCR technology (Selective Catalytic Reduction System). [0003] Urea solution for vehicles is the main component of diesel engine exhaust purifier. It is a reducing agent for eliminating nitrog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F1/00B01F7/18B01F15/06B01D53/94B01D53/56
Inventor 杨翠红
Owner CHINA NAT ENERGY REFINING & CHEM ENG CO LTD
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