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Industrial residue boiler anti-coking agent and application method thereof

A technology of industrial waste residue and anti-coking agent, which is applied in the petroleum industry, fuel additives, solid fuels, etc., can solve problems such as affecting the safe operation of boilers, improve economy and safety, improve ash melting temperature, and is simple and easy to operate. Effect

Inactive Publication Date: 2013-04-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the high content of alkali metal elements K, Na and non-metal elements Cl and Si in industrial waste fuel, silicate compounds with low melting points (usually below 680°C) are produced during combustion, and adhere to the carbon dioxide in the flue gas. Fly ash particles lead to serious coking and slagging in the boiler, which greatly affects the safe operation of the boiler

Method used

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  • Industrial residue boiler anti-coking agent and application method thereof
  • Industrial residue boiler anti-coking agent and application method thereof
  • Industrial residue boiler anti-coking agent and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] An anti-coking agent for industrial waste slag boilers, the anti-coking agent is composed of 40% by mass of kaolin, 40% of CaO and 20% of fly ash. The particle size of kaolin, CaO and fly ash is 200-500 mesh particles.

[0021] A self-developed small combustion reactor was used to test the performance of the above anti-coking agents. Using industrial waste residue from a chemical plant as fuel, the additive mass is 1% of the waste residue fuel mass, which can effectively reduce the content of alkali metal gases such as potassium and sodium in flue gas at 800-1200 °C. Moreover, after the reaction, the ash melting point of the industrial waste slag is significantly improved, and the specific data of the ash melting point are shown in Table 1.

[0022] Table 1

[0023]

Embodiment 2

[0025] The difference between this example and Example 1 is that the anti-coking agent for the industrial waste slag boiler is composed of 60% by mass of kaolin, 30% of CaO and 10% of fly ash. Others are the same as in Example 1, and the specific data of the ash melting point are shown in Table 2.

[0026] Table 2

[0027]

Embodiment 3

[0029] The difference between this example and Example 1 is that the mass of the anti-coking agent is 2% of the mass of the waste residue fuel. Others are the same as in Example 1, and the specific data of the ash melting point are shown in Table 3.

[0030] table 3

[0031]

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Abstract

The invention discloses an industrial residue boiler anti-coking agent and an application method thereof, belonging to the technical field of anti-coking additives. The industrial residue boiler anti-coking agent comprises the following components in percentage by mass: 30-60% of kaolin, 30-60% of CaO and 10-20% of fly ash. When in use, the industrial residue boiler anti-coking agent, accounting for 1-2% of the total mass of the industrial residue fuel, is added to the industrial residue fuel and evenly mixed. The industrial residue boiler anti-coking agent disclosed by the invention has high porosity, and the surface micropores have adsorbability; the industrial residue boiler anti-coking agent is simple to use, and the addition amount is only 1-2% of the total weight of the fuel, so that the invention does not influence the combustion characteristics of the fuel and the normal operation of the boiler, and does not need to modify the existing combustion equipment, thereby greatly lowering the investment cost.

Description

technical field [0001] The invention belongs to the technical field of anti-coking additives, in particular to an anti-coking agent for industrial waste slag boilers and a use method thereof. Background technique [0002] With the rapid development of modern industry, the annual waste discharge of petrochemical, textile printing and dyeing, metallurgy, papermaking, pharmaceutical and other industries is nearly 1 billion tons, and the cumulative total has reached 6.6 billion tons. If a large amount of waste residue is directly piled up as garbage, it will not only cause serious environmental pollution, but also cause a waste of energy. After research and analysis, we found that industrial waste slag contains a large amount of organic matter, some of which contain more than 70% C, so these industrial waste slags are used as fuel, and after burning in the furnace, a large amount of heat energy can be generated for daily production and use, and it can also relieve oil pollution....

Claims

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Application Information

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IPC IPC(8): C10L9/10C10L10/04
Inventor 赵莹谭力程桂石董长青
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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