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A boiler flue gas desulfurization tower repair agent and preparation method thereof

A technology for boiler flue gas and repair agent, which is applied in the directions of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of large corrosion area during curing time, concrete corrosion of steel bars, long repair construction time, etc. The risk of environmental pollution, the effect of improving anti-wear and corrosion resistance, and reducing production costs

Active Publication Date: 2017-12-29
桐乡市金琪塑料包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above two anti-corrosion methods have to take certain measures such as desulfurization flue gas corrosion-resistant concrete and repair technology to solve them. However, the desulfurization tower is relatively high and the temperature of the flue gas is high, and the concrete is easy to corrode the internal steel bars due to expansion and cracking. cause safety hazards, the above-mentioned concrete is suitable for cooling towers and not necessarily suitable for desulfurization tower devices; the above-mentioned anti-wear metal repair agent uses calcium stearate and potassium oxide as aggregates, dioctyl phthalate, dioctyl adipate , nitromethane, carbon tetrachloride as a solvent, and triethanolamine as a curing agent have the characteristics of short curing time and hydrophobicity, but for the desulfurization tower, the medium is highly corrosive, the temperature of the flue gas is high, and the abrasiveness is strong. The impact and abrasion effects of aggregate calcium stearate and potassium oxide on the solid particles in the boiler flue gas are relatively poor, and the impact strength of the entire formula system under high temperature conditions (such as the flue gas temperature of the desulfurization tower is 150-230°C) At the same time, the short curing time is also unfavorable for equipment such as large corrosion area of ​​desulfurization tower and long repair construction time. In addition, volatile and strong stimulating solvents such as nitromethane and carbon tetrachloride are harmful to desulfurization tower. Internal construction personnel have a greater impact

Method used

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  • A boiler flue gas desulfurization tower repair agent and preparation method thereof

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Embodiment 1

[0016] This embodiment provides a boiler flue gas desulfurization tower repair agent, including A component and B component, in parts by mass: A component includes the following components: 100 parts of aggregate circulating fluidized bed boiler fly ash; 2 parts of propylene glycol monomethyl ether acetate as an activator; 5 parts of resorcinol as an adhesive; 8 parts of low-temperature coal tar pitch as a tackifier; 3 parts of dibutyl phthalate as a diluent.

[0017] Component B includes the following components: 3 parts of curing agent hexamethylenetetramine; 3 parts of accelerator hexamethoxymethylmelamine; 1 part of dilution stabilizer dibutyl phthalate, the curing agent and accelerator Agents are proportioned in parts by mass at 1:1.

Embodiment 2

[0019] This embodiment provides a boiler flue gas desulfurization tower repair agent, including A component and B component, in parts by mass: A component includes the following components: 100 parts of aggregate circulating fluidized bed boiler fly ash; 8 parts of propylene glycol monomethyl ether acetate as activator; 10 parts of resorcinol as binder; 10 parts of low-temperature coal tar pitch as tackifier; 8 parts of dibutyl phthalate as diluent.

[0020] Component B includes the following components: 5 parts of curing agent hexamethylenetetramine; 5 parts of accelerator hexamethoxymethylmelamine; 2 parts of dilution stabilizer dibutyl phthalate, the curing agent and accelerator Agents are proportioned in parts by mass at 1:1.

Embodiment 3

[0022] This embodiment provides a boiler flue gas desulfurization tower repair agent, including A component and B component, in parts by mass: A component includes the following components: 100 parts of aggregate circulating fluidized bed boiler fly ash; 5 parts of propylene glycol monomethyl ether acetate as activator; 8 parts of resorcinol as binder; 10 parts of low temperature coal tar pitch as tackifier; 3 parts of dibutyl phthalate as diluent.

[0023] Component B includes the following components: 4 parts of curing agent hexamethylenetetramine; 4 parts of accelerator hexamethoxymethylmelamine; 2 parts of dilution stabilizer dibutyl phthalate, the curing agent and accelerator Agents are proportioned in parts by mass at 1:1.

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Abstract

The invention relates to the technical field of environmental protection, in particular to a boiler flue gas desulfurization tower repair agent and a preparation method thereof. The boiler flue gas desulfurization tower repair agent is characterized by comprising a component A and a component B, the component A comprises, by mass, 100 parts of aggregate circulating fluidized bed boiler fly ash, 2-8 parts of activator propylene glycol monomethyl ether acetate, 5-10 parts of adhesive resorcinol, 8-10 parts of tackifier low temperature coal tar pitch and 3-8 parts of diluent dibutyl phthalate, and the component B comprises, by mass, 3-5 parts of hardener hexamine, 3-5 parts of accelerator hexakis(methoxymethyl)melamine and 1-2 parts of dilute stabilizing agent dibutyl phthalate, wherein the hardener and the accelerator are proportioned according to the mass portion of 1:1. Due to the fact that Al2O3 in the aggregate circulating fluidized bed boiler fly ash is high in hardness and anti-corrosion mineral filler, the abrasion resistance and corrosion resistance of the repair agent can be improved; SiO2 particles in aggregates are prone to be subjected to cross-linking reaction with the hardener and surface-activated or modified by various activators so as to achieve high value application.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a boiler flue gas desulfurization tower repair agent and a preparation method thereof. Background technique [0002] The large-scale desulfurization device for boiler flue gas desulfurization is called a desulfurization tower, SO 2 Wet flue gas desulfurization environmental protection technology is widely used in large and medium-sized enterprises due to its high desulfurization rate, wide range of coal quality, mature technology, long stable operation period, small impact of load changes, and large flue gas processing capacity. Thermal power plants have become the leading technology for flue gas desulfurization in thermal power plants at home and abroad. For desulfurization equipment, the process has SO 2 The absorption liquid medium is highly corrosive, the flue gas temperature is high, the wear is strong, the equipment has a large anti-corrosion area, and it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B18/08C04B111/72
CPCC04B18/08C04B26/26C04B2111/72C04B2201/50C04B24/045C04B24/02C04B24/128Y02W30/91
Inventor 杨松汪小蕾
Owner 桐乡市金琪塑料包装有限公司