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Tracing agent for a urea aqueous solution, and applications thereof

A urea aqueous solution and tracer technology, applied in the chemical industry, can solve problems such as uneven product quality, affecting corporate brand image, and increasing complaints, and achieve the effects of easy operation, excellent equipment compatibility, and low dosage

Inactive Publication Date: 2018-03-27
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the product quality of urea aqueous solution AUS 32 is uneven, causing complaints from customers, which not only increases unnecessary complaints, but also seriously affects the brand image of the company

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A tracer for urea aqueous solution, the specific composition is: 0.1kg of magnesium 1-amino-6-naphthol-4,6-disulfonate, 0.1kg of magnesium chloride, 0.15kg of magnesium sulfate, 0.2kg of copper chloride, Copper sulfate 0.3kg, ammonium chloride 5kg, ammonium bicarbonate 5kg.

[0024] This implementation further provides a tracer solution composed of the tracer and water, specifically composed of: 0.1% magnesium 1-amino-6-naphthol-4,6-disulfonate, 0.1% magnesium chloride, 0.15% magnesium sulfate %, copper chloride 0.2%, copper sulfate 0.3%, ammonium chloride 5%, ammonium bicarbonate 5%, and the balance of laboratory secondary water.

[0025] This embodiment further provides an application method of the tracer solution, specifically: take the above tracer solution and add it to the urea aqueous solution AUS32 at a dose of 6 mg / kg.

Embodiment 2

[0027] A tracer for urea aqueous solution, the specific composition is: 0.3kg of magnesium 1-amino-6-naphthol-4,6-disulfonate, 1.5kg of magnesium chloride, 0.1kg of magnesium sulfate, 0.3kg of copper chloride, Copper sulfate 0.3kg, ammonium chloride 8kg, ammonium bicarbonate 2kg.

[0028] This implementation further provides a tracer solution composed of the tracer and water, specifically composed of: 0.3% magnesium 1-amino-6-naphthol-4,6-disulfonate, 1.5% magnesium chloride, 0.1% magnesium sulfate %, 0.3% copper chloride, 0.3% copper sulfate, 8% ammonium chloride, 2% ammonium bicarbonate, and the balance of secondary water in the laboratory.

[0029] This embodiment further provides an application method of the tracer solution, specifically: take the above tracer solution and add it to the urea aqueous solution AUS32 at a dose of 6 mg / kg.

Embodiment 3

[0031] A tracer for urea aqueous solution, the specific composition is: 0.6kg of magnesium 1-amino-6-naphthol-4,6-disulfonate, 1.5kg of magnesium chloride, 0.2kg of magnesium sulfate, 0.5kg of copper chloride, Copper sulfate 0.6kg, ammonium chloride 12kg, ammonium bicarbonate 5kg.

[0032] This implementation further provides a tracer solution composed of the tracer and water, specifically composed of: 0.6% of magnesium 1-amino-6-naphthol-4,6-disulfonate, 1.5% of magnesium chloride, and 0.2% of magnesium sulfate %, 0.5% copper chloride, 0.6% copper sulfate, 12% ammonium chloride, 5% ammonium bicarbonate, and the balance of first-grade water in the laboratory.

[0033] This embodiment further provides the application method of the tracer solution, specifically: take the above tracer solution and add it to the urea aqueous solution AUS32 at a dose of 10 mg / kg.

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PUM

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Abstract

The invention provides a tracing agent for a urea aqueous solution, wherein the tracing agent contains, by weight, 0.01-0.8 part of amino and sulfonic-substituted naphthol, 0.01-2 parts of magnesium chloride, 0.01-2 parts of magnesium sulfate, 0.01-0.8 part of copper chloride, 0.01-0.8 part of copper sulfate, 0.01-15 parts of ammonium chloride, and 0.01-10 parts of ammonium hydrogen carbonate. Theinvention further provides an aqueous solution containing the tracing agent. According to the present invention, the tracing agent can ensure the reducing performance of the urea aqueous solution andthe service life of the SCR system, and further has advantages of simple use method, less consumption, high recognition degree and the like. The invention further provides a use method of the tracingagent or the tracing agent aqueous solution, wherein the use method specifically comprises adding to a urea aqueous solution according to a specific ratio, does not affect the physical and chemical properties of the urea aqueous solution, can achieve the purposes of quality control and authenticity identification, and can leading the healthy development of the urea aqueous solution market.

Description

technical field [0001] The present invention relates to a tracer for urea aqueous solution and its use method, in particular to a tracer for urea aqueous solution, especially AUS32 urea aqueous solution for vehicles, which has the functions of distinguishing authenticity, not changing the performance of urea aqueous solution, The utility model has the characteristics of being easy to detect and convenient to use, and belongs to the field of chemical industry. Background technique [0002] Aqueous urea solution, especially AUS32 urea solution, is an essential reducing agent for diesel engines with SCR after-treatment systems. The main principle is that the SCR injection system injects a certain amount of urea solution into the exhaust pipe according to the operating conditions of the diesel engine. Under the condition of high temperature, it is decomposed and finally converted into ammonia gas. Under the action of the catalyst, the ammonia gas reacts with the nitrogen oxides ...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/00G01N33/0003
Inventor 耿立波杨兵张凯蛟樊秀菊丁烨冯会良
Owner CHINA PETROLEUM & CHEM CORP
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