Mild Cleaning Agents (e.g., specialized thinners)
Advantages: Their composition is relatively mild, with low chemical aggression. When removing minor surface contaminants, they can maximize the integrity of the original adhesive interface, ensuring the structural reliability of the pipeline.
Disadvantages: Cleaning efficiency is relatively low. For hardened or large-area thick adhesive residues, multiple wiping or extended action time may be required.
Decision Recommendations
In the cleaning decision-making process during the manufacturing stage, structural safety should take precedence over aesthetic perfection. Therefore, unless there is absolute certainty, mild specialized thinners should be preferred. If high-efficiency cleaning agents must be used, their concentration, action time, and scope should be strictly controlled, and residues should be thoroughly removed. If necessary, bond strength verification tests should be conducted.
Operation and Maintenance Phase: Chemical Neutralization and Cleaning Based on the Transported Materials
After pipelines are put into operation, the scale buildup mainly originates from the transported medium. The core of cleaning in this phase is to safely and effectively remove deposits generated during operation through chemical neutralization and dissolution reactions.
The Principle of "Targeted Treatment" Cleaning:
Transporting acidic materials (such as coal slurry, acidic mineral slurry, and chemical solutions): Acidic scale or organic matter adhesion is easily formed. In this case, alkaline cleaning agents (such as sodium hydroxide and sodium carbonate solutions) should be used. The acid-base neutralization reaction can effectively decompose the scale layer and saponify and remove organic grease.
Transporting alkaline materials (such as aluminum slurry and alkaline slag slurry): Alkaline deposits and salt scale are easily generated. In this case, acidic cleaning agents (such as diluted hydrochloric acid, phosphoric acid, and sulfamic acid) should be used. Acids can not only neutralize alkaline substances but also dissolve common scales such as calcium carbonate and calcium sulfate.
For deposits with complex compositions: A compound cleaning solution may be necessary, involving the addition of surfactants (to enhance penetration) and corrosion inhibitors (to protect non-ceramic pipe components) to the cleaning solution to improve overall cleaning effectiveness.
Standardized Cleaning Process: A safe chemical cleaning process should include: high-pressure water pre-rinsing → chemical circulation cleaning → neutralization and waste discharge → rinsing with clean water → inspection and acceptance. Each step requires strict control of the agent concentration, temperature, and contact time, and proper wastewater treatment.
Environmental Protection and Safety: The Cornerstone of Sustainable Operation and Maintenance
Environmental protection and safety are inviolable red lines in any cleaning operation.
Environmental Priority: Prioritize environmentally friendly cleaning agents that are biodegradable, low in phosphorus, and low in nitrogen to minimize the impact on the ecological environment.
Precise Dosage: Follow the principle of "precise calculation and appropriate use" to avoid waste and additional wastewater treatment burdens caused by overuse.
Compliant Wastewater Treatment: All cleaning wastewater, especially strong acid and alkali wastewater, must undergo neutralization, sedimentation, and other treatments to meet standards before discharge. Indiscriminate discharge into sewers or natural water bodies is strictly prohibited.
Cleaning wear-resistant ceramic pipes is a meticulous task that spans their entire life cycle. From "protective cleaning" during manufacturing to "targeted cleaning" during operation, and finally to consistent "environmentally friendly cleaning," only by establishing a systematic understanding and adhering to scientific standards can we fulfill our corporate environmental responsibilities while ensuring pipe performance and lifespan.
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