Boiler coke eliminating agent

A decoking agent and boiler technology, which is used in complex/solubilizer treatment, flushing, cleaning of heat transfer devices, etc., can solve the problems of large decoking dosage, incomplete decoking, environmental pollution, etc., and achieves less dosage. , The effect of inhibiting alkali corrosion and no explosion hazard

Inactive Publication Date: 2005-06-15
戴琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] What the present invention aims to solve is to overcome the problems of the existing powders, such as large dosage for decoking, laborious and troublesome delivery, environmental pollution, incomplete decoking, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Mix commercially available chemically pure nitrate, boric acid raw materials and water according to the following weight percentages: potassium nitrate 4.5-8.0%, copper nitrate 0.2-0.55%, magnesium nitrate 1.0-3.0%, aluminum nitrate 0.5-1.2%, boric acid 0.3- 1.2%, the balance is water.

[0010] The product characteristic parameters of this product are: appearance: light blue liquid, specific gravity: 1.028-1.1, pH: 4-6.7, freezing point: -10°C.

[0011] Specific formula example:

[0012] Formula 1: potassium nitrate 5.5%, copper nitrate 0.27%, magnesium nitrate 1.2%, aluminum nitrate 0.8%, boric acid 0.5%, water 91.73%.

[0013] Formula 2: potassium nitrate 4.7%, copper nitrate 0.48%, magnesium nitrate 1.43%, aluminum nitrate 0.94%, boric acid 0.7%, water 91.75%.

[0014] Formula three: potassium nitrate 7.5%, copper nitrate 0.23%, magnesium nitrate 1.1%, aluminum nitrate 0.61%, boric acid 0.33%, water 90.23%.

[0015] The proportion of raw materials should be determ...

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PUM

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Abstract

A boiler decoking agent belongs to the technical field of cleaning boiler inner walls with chemical solutions. It solves the problems of the existing powdery decoking agents such as large dosage, laborious putting in, polluting the environment, and incomplete decoking. It consists of an aqueous solution of potassium nitrate, copper nitrate, magnesium nitrate, aluminum nitrate, and boric acid. It can be sprayed into the flame area from the observation hole during the operation of the boiler, and it can also be sprayed on the coking surface when the furnace is shut down.

Description

technical field [0001] The invention belongs to the technical field of cleaning the inner wall of a boiler with a chemical solution. Background technique [0002] To the applicant's knowledge, coking in the furnace has a significant impact on the safety, economical operation and reliability of the boiler. Taking a power boiler as an example, the coking of the furnace increases the heat transfer resistance of the water-cooled wall, the water-cooled wall absorbs insufficient heat, and the output of the boiler decreases. As the temperature of the hot steam rises, the amount of desuperheating water increases sharply. In severe cases, due to overheating, the load should be reduced. When the burner is coked, the aerodynamic field in the furnace is affected, the combustion loss is large, and the burner is even burned; large coke pieces fall and extinguish the pulverized coal torch; severe coking will block the ash hopper, and the furnace is forced to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/08F28G9/00
Inventor 戴琦
Owner 戴琦
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