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Alkaline boiler scale inhibitor

A kind of antiscalant and boiler technology, applied in the field of water treatment, can solve problems such as inappropriateness, and achieve the effects of thorough scale removal, reduced corrosion rate, and excellent corrosion and scale inhibition performance

Inactive Publication Date: 2018-11-30
TIANJIN PRIMETECH CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the boiler scale inhibitors currently on the market are acid scale inhibitors. Although they can solve the structural problems of industrial boiler water treatment to a certain extent, there are still many shortcomings. Acid scale inhibitors are generally used in groundwater, tap water, well water, etc. It is not suitable for surface water, seawater desalination, rivers and lakes where the raw water is more microbial.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An alkaline boiler scale inhibitor, comprising the following components in parts by weight: water: 80.5%, potassium hydroxide: 5%, ethylenediaminetetraacetic acid sodium salt (EDTA-4Na): 4%, amino trifurcation disulfide Acid (ATMP): 3%, polyol phosphate (PAPE): 5%, acetone oxime: 2%, benzotriazole: 0.5%.

[0014] Preparation process: Add 80 parts of water in the formula amount into the reaction kettle, first add 5 parts of potassium hydroxide, 4 parts of ethylenediaminetetraacetic acid sodium salt (EDTA-4Na), 3 parts of aminotrifuric acid ( ATMP), 5 parts of polyol phosphate (PAPE), 0.5 part of benzotriazole, stirred for 15-20min to fully dissolve it. Then add 2 parts of acetone oxime and stir for 10-15 minutes.

Embodiment 2

[0016] An alkaline boiler scale inhibitor, comprising the following components in parts by weight: water: 80%, potassium hydroxide: 2%, sodium hydroxide: 4%, ethylenediaminetetramethylenephosphonic acid (EDTMPA): 4%, diethylenetriaminepentamethylphosphonic acid (DTPMP): 6%, acetone oxime: 2%, hydrazine: 1%, tolyltriazole: 1%.

[0017] Preparation process: Add 80 parts of water in the formula amount into the reactor, first add 2 parts of potassium hydroxide, 4 parts of sodium hydroxide, 4 parts of ethylenediaminetetramethylenephosphonic acid (EDTMPA), 6 parts Diethylenetriaminepentamethylphosphonic acid (DTPMP) and 1 part of tolyltriazole were stirred for 15-20min to fully dissolve them. Then add 2 parts of acetone oxime and 1 part of hydrazine, and stir for 10-15 minutes.

Embodiment 3

[0019] An alkaline boiler scale inhibitor, comprising the following components in parts by weight: water: 75%, sodium hydroxide: 5%, ethylenediamine polyol phosphate (PAPE): 12%, sodium edetate Salt (EDTA-4Na): 2%, carbohydrazide: 5%, tolyltriazole: 1%.

[0020] Preparation process: Add 75 parts of water into the reaction kettle, first add 5 parts of sodium hydroxide, 12 parts of ethylene polyol phosphate (PAPE), 2 parts of ethylenediaminetetraacetic acid sodium salt (EDTA- 4Na), 1 part of tolyltriazole, stirred for 15-20min to fully dissolve it. Then add 5 parts of carbohydrazide and stir for 10-15 minutes.

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PUM

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Abstract

The invention discloses an alkaline boiler scale inhibitor. The alkaline boiler scale inhibitor comprises the following ingredients in percentage by weight: 75% to 85% of pure water, 3% to 10% of strong base, 5% to 15% of scale inhibitor, 1% to 5% of deoxidizer and 0.2% to 1.0% of metal corrosion inhibitor. The invention aims at providing the alkaline boiler scale inhibitor which is applicable tosurface water with more microorganisms, seawater desalinization and river and lake water, the scale inhibiting effect is good, the service life of a boiler can be prolonged, and the alkaline boiler scale inhibitor is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an alkaline boiler scale inhibitor. Background technique [0002] Scaling and rusting will inevitably occur after long-term use of boiler equipment. Scaling control is a major problem in industrial water treatment. Scale inhibitors are a class of agents that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects on metal equipment. The anti-corrosion and anti-scaling agent for cold-changing equipment is formulated with epoxy resin and specific amino resin as the base material, adding appropriate amount of various anti-rust, anti-corrosion and other additives, and is a single component. It has excellent shielding, anti-seepage, anti-rust properties, good scale resistance, thermal conductivity, excellent resistance to weak acids, strong ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F5/14C23F11/10C23F11/14C02F1/20
CPCC02F5/12C02F1/20C02F5/14C02F2303/08C23F11/10C23F11/14
Inventor 刘娟娟
Owner TIANJIN PRIMETECH CHEM
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