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In-furnace de-coking anti-corrosive agent and preparation and use method thereof

A technology of chemicals and boilers, which is applied in the field of flue gas denitrification, can solve the problems of unreasonable distribution ratio of effective components of solvent-based decoking agents, difficulty in obtaining raw materials of solvent-based decoking agents, and complex components of solvent-based decoking agents. Achieve the best decoking effect, wide application range, and improve the effect of structure

Pending Publication Date: 2021-02-12
中节能(秦皇岛)环保能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current solvent-based decoking agents have the following disadvantages: First, the function of the solvent-based decoking agent is single, resulting in insignificant energy-saving effects; Not obvious; third, the raw materials of solvent-based decoking agents are not easy to obtain, resulting in limited purchase channels; fourth, the composition of solvent-based decoking agents is complex

Method used

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  • In-furnace de-coking anti-corrosive agent and preparation and use method thereof
  • In-furnace de-coking anti-corrosive agent and preparation and use method thereof
  • In-furnace de-coking anti-corrosive agent and preparation and use method thereof

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preparation example Construction

[0022] The preparation method of the decoking and anticorrosion agent in the furnace of the present invention: weigh the content of each component according to the formula, mix and stir after weighing, and at the same time, add the ingredients while stirring at a stirring speed of 400 to 500 rpm. For the required water, the stirring time is 20 to 50 minutes. After it is fully dissolved, it is left to room temperature and put into a container for use.

[0023] Method of use: There are two ways to use the decoking and anticorrosion agent in the furnace of the present invention, which can be used not only when the boiler is running, but also after the boiler stops running. The first method of use, when the boiler is running, put the prepared decoking and anticorrosion agent into the spraying device, and spray according to the combustion situation inside the boiler; the second method of use, after the boiler stops running, put the prepared The decoking and anticorrosion agent is p...

Embodiment 1

[0026] Weigh boric acid 1.56wt% by mass percentage, magnesium sulfate 9.38wt%, aluminum sulfate 3.75wt%, sodium silicate 7.19wt%, then add 78.12wt% water, at a temperature of 36°C at a speed of 450 rpm Stir for 40 minutes to fully dissolve the solute. After placing it at room temperature, take 1.0 kg of the prepared coking and antiseptic agent in the furnace and put it into the spraying device, and spray the coking and antiseptic agent on the coking part inside the boiler through the boiler observation port. . The boiler used in this embodiment is a coal-fired boiler.

Embodiment 2

[0028] Weigh 1.55wt% of boric acid, 9.37wt% of magnesium sulfate, 3.76wt% of aluminum sulfate, 7.20wt% of sodium silicate, and then add 78.12wt% of water. Embodiment 2 is the same as the preparation method and usage method of embodiment 1. The boiler used in this embodiment is a garbage incinerator, and the amount of decoking and anticorrosion agent in the furnace is 1.1kg.

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Abstract

The invention provides an in-furnace de-coking anti-corrosive agent as well as preparation and use methods thereof. The in-furnace de-coking anti-corrosive agent consists of boric acid, magnesium sulfate, aluminum sulfate, sodium silicate and water, the preparation method of the in-furnace de-coking anti-corrosive agent comprises the following steps: mixing and stirring the components in the rangeof the components in the formula, and adding the required amount of water while mixing and stirring; the use method of the in-furnace de-coking anti-corrosive agent is as follows: when the boiler runs, the prepared de-coking anti-corrosive agent is sprayed according to the combustion condition in the boiler. The in-furnace de-coking anti-corrosive agent can effectively remove cokes in a hearth, is low in corrosion degree to a boiler, reduces the maintenance cost, and prolongs the service life of a boiler.

Description

technical field [0001] The invention relates to the technical field of flue gas denitrification, in particular to an antiseptic agent for decoking in a furnace and a preparation and use method thereof. Background technique [0002] The ashes produced after fuel combustion mostly melt into a liquid or softened state at high temperatures. If the ashes remain softened and touch the heating surface, they will stick to the heating surface due to cooling and form coke. The coking generated in the boiler will easily cause the fuel consumption to increase and the heat exchange efficiency of the boiler to decrease due to insufficient combustion of the fuel. In this case, a combination of manual decoking and soot blowing is usually used for decoking, but this method is not effective in removing coke caused by fuels with low melting points. Therefore, the existing solution is to regularly add some chemical agents to the boiler to solve the coking problem in the boiler. The principle i...

Claims

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Application Information

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IPC IPC(8): C10L10/04C10L10/06F23G5/48
CPCC10L10/04C10L10/06F23G5/48C10L2230/22
Inventor 王振兴沈剑飞柳夫杰
Owner 中节能(秦皇岛)环保能源有限公司
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