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Production process of adblue

A production process and technology of urea for vehicles, which is applied in the field of urea production for vehicles, can solve the problems of difficulty in guaranteeing product quality, waste of a large amount of electric energy and waste liquid, slow dissolving speed of particles, etc., so as to improve production efficiency, realize large-scale automatic production, Improve the effect of blending effects

Pending Publication Date: 2022-05-24
亿路洁(广州)环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a production process of urea for vehicles, which has the advantages of energy saving and environmental protection, and solves the problem that the current production process of urea solution for vehicles wastes a lot of electric energy and produces a large amount of waste liquid, and the particle dissolution rate Slow, low efficiency, unable to continuously produce, and difficult to guarantee product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A process for producing urea for vehicles, comprising the following steps:

[0032] Step 1: Select the urea raw material, classify the urea raw material, and weigh the urea raw material.

[0033] A high-precision electronic scale is used for weighing urea. Before using the electronic scale, the electronic scale should be calibrated so that the indication of the electronic scale is at the zero position.

[0034] Step 2: Pretreatment of raw material urea.

[0035] The raw urea was added to the pretreatment tank at a rate of 10kg / min, stirring was continued, and nitrogen with a temperature of 20°C was injected into the pretreatment tank every 10s.

[0036] Step 3: prepare pure water;

[0037] The preparation method of pure water comprises the following steps:

[0038] S1, pass the pretreated raw water through a microfiltration filter element, an activated carbon filter element and an ultrafiltration filter element in turn to remove impurities in the raw water;

[0039]...

Embodiment 2

[0053] A process for producing urea for vehicles, comprising the following steps:

[0054] Step 1: Select the urea raw material, classify the urea raw material, and weigh the urea raw material.

[0055] A high-precision electronic scale is used for weighing urea. Before using the electronic scale, the electronic scale should be calibrated so that the indication of the electronic scale is at the zero position.

[0056] Step 2: Pretreatment of raw material urea.

[0057] The raw urea was added to the pretreatment tank at a rate of 13kg / min, stirring was continued, and nitrogen with a temperature of 35°C was injected into the pretreatment tank every 12s.

[0058] Step 3: prepare pure water;

[0059] The preparation method of pure water comprises the following steps:

[0060] S1, pass the pretreated raw water through a microfiltration filter element, an activated carbon filter element and an ultrafiltration filter element in turn to remove impurities in the raw water;

[0061]...

Embodiment 3

[0075] A process for producing urea for vehicles, comprising the following steps:

[0076] Step 1: Select the urea raw material, classify the urea raw material, and weigh the urea raw material.

[0077] A high-precision electronic scale is used for weighing urea. Before using the electronic scale, the electronic scale should be calibrated so that the indication of the electronic scale is at the zero position.

[0078] Step 2: Pretreatment of raw material urea.

[0079] The raw urea was added to the pretreatment tank at a rate of 15kg / min, stirring was continued, and nitrogen with a temperature of 45°C was injected into the pretreatment tank every 15s.

[0080] Step 3: prepare pure water;

[0081] The preparation method of pure water comprises the following steps:

[0082] S1, pass the pretreated raw water through a microfiltration filter element, an activated carbon filter element and an ultrafiltration filter element in turn to remove impurities in the raw water;

[0083]...

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Abstract

The invention relates to the technical field of adblue production, in particular to an adblue production process which comprises the following steps: step 1, selecting urea raw materials, classifying the urea raw materials, and weighing the urea raw materials; 2, pretreating the raw material urea; step 3, preparing pure water; 4, urea raw materials are added into the mixer, and pure water is injected to be mixed with the urea raw materials to form a urea solution; 5, filtering and concentrating the urea solution; step 6, detecting the urea solution, and storing the urea solution for later use if the urea solution is detected to be qualified; if the detection result is unqualified, the process flows to the step 5, purification and concentration are carried out through a filtering device, and after concentration is qualified, storage and standby application are carried out. The device is energy-saving and environment-friendly, waste liquid is reduced, unqualified products can flow back to be purified and concentrated again, continuous production of the adblue is guaranteed, large-scale automatic production can be achieved, the production efficiency is greatly improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of urea production for vehicles, in particular to a production process for urea for vehicles. Background technique [0002] Vehicle urea solution can convert nitrogen oxides in diesel vehicle exhaust into harmless nitrogen and water, which is energy-saving and environmentally friendly, so that vehicle exhaust can meet national emission standards. At present, there are two main domestic vehicle urea production processes. : Dissolving urea granules for vehicles to produce urea solution for vehicles and using urea molten liquid to directly produce urea solution for vehicles. [0003] The current production process of urea solution for vehicles wastes a lot of electric energy and generates a lot of waste liquid, and the particle dissolving speed is slow, the efficiency is low, continuous production is impossible, and the product quality is difficult to guarantee. SUMMARY OF THE INVENTION [0004] Aiming at th...

Claims

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Application Information

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IPC IPC(8): C07C273/16C07C275/00C02F9/12C02F1/44C02F1/48C02F1/00C02F103/04
CPCC07C273/16C02F9/00C02F1/444C02F1/001C02F1/441C02F1/48C02F2103/04C07C275/00Y02T10/12
Inventor 赵成兴
Owner 亿路洁(广州)环保股份有限公司
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