Production process of low-formaldehyde vehicle urea

A technology for vehicle urea and production process, which is applied to the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of reducing production efficiency, wasting stirring time, improving urea raw materials, etc., and improving stability and efficiency. The effect of reducing the probability of oxidation and saving the time of stirring

Inactive Publication Date: 2019-06-18
广州蓝禾素环保科技有限公司
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Problems solved by technology

[0003] At present, the existing urea production process still has some deficiencies, for example; the existing urea production process cannot realize large-scale automatic production, greatly reduces production efficiency, and cannot meet the needs of production The process cannot speed

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  • Production process of low-formaldehyde vehicle urea

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[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0023] See figure 1 , The present invention provides a technical solution: a production process of low-formaldehyde urea for vehicles, including the following steps:

[0024] a. First select the urea raw materials, then classify the selected raw materials, and then put them on the electronic scale for weighing one by one;

[0025] b. After step a is completed, pour the weighed raw materials into the mixer, and then use the mixer to stir the mixed raw materials;

[0026] c. After step b is completed, pure water is injected into the mixer and mixed with the raw materials to form a urea solution;

[0027] d. After step c is completed, the urea liquid is concentrated, including heating and cooling.

[0028] The electronic scale adopts a high-precision electronic scale, and the electronic scal...

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Abstract

The invention discloses a production process of a low-formaldehyde vehicle urea. The production process comprises the following steps: a, first, the selection of urea raw materials is carried out, then the selected raw materials are classified, and then the classified raw materials are placed on an electronic scale for weighing one by one; b, after step a is finished, the weighed raw materials arepoured into a mixer, and then the mixed raw materials are stirred by using a stirrer; c, after step b is finished, pure water is injected into the mixer to mix with the mixed raw materials to form aurea solution; d, after step c is finished, the urea liquid is subjected to concentration including heating and cooling. The process can realize large-scale automatic production, greatly improve production efficiency, and meet the production requirements; operation is performed by using a stirring and heating integrated machine, the stirring speed of the urea raw materials can be effectively accelerated, the stirring time is reduced, the transfer of the urea raw materials is avoided, the probability of oxidation of the urea raw materials is reduced, and the stability of the urea in the production process is improved.

Description

technical field [0001] The invention relates to the technical field of urea production technology, in particular to a production technology of low-formaldehyde vehicle urea. Background technique [0002] Since the environmental protection departments of various countries proposed to further reduce the nitrogen oxide pollutants emitted by diesel engines, engine manufacturers began to use SCR technology to meet the requirements of environmental protection departments. Diesel engine exhaust treatment fluid (commonly known as: automotive urea, automotive urea, Environmentally friendly urea) is a consumable that must be used in SCR technology. [0003] At present, the existing urea production process still has some deficiencies, for example; the existing urea production process cannot realize large-scale automatic production, greatly reduces production efficiency, and cannot meet the needs of production The process cannot speed up the stirring speed of the urea raw material, whi...

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Application Information

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IPC IPC(8): B01D53/94B01D53/56
Inventor 李小功
Owner 广州蓝禾素环保科技有限公司
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