Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers. Glan Chemical Co., Ltd. offers guaranteed cooperation.
Jining Green Chemical Technology Co., Ltd. (abbreviated to Jining Green Cleaning Co.) was established in 2010 and specializes in cleaning various industrial heat exchange equipment. The company boasts comprehensive business philosophy and the capability to research and develop industrial cleaning technologies. We undertake cleaning services for industrial, private enterprise, and corporate chemical equipment, power plant equipment, condensers, boilers, and economizers. We also provide air conditioning and heat exchange equipment cleaning, as well as cleaning for machinery and chemical equipment. Additionally, we handle cleaning and descaling of refrigeration and heating equipment.
Jining Green Cleaning Company has dozens of cleaning machines in various models ranging from 10mpa to 250mpa, as well as more than a dozen chemical cleaning pump stations. Our main services include power plants, chemical factories, oil mills, food factories, enterprises and institutions, heating equipment, etc. The company also provides long-term industrial heat exchanger cleaning and design solutions to industry clients.
Our company has newly acquired domestic cleaning machines and imported cleaning equipment. We have hired experienced technical specialists in the cleaning industry, achieving standardized and standardized cleaning of heat exchange equipment.
Chemical cleaning descaling process:
Recirculating Closed Loop Cleaning
Recirculating cleaning utilizes two original parallel ash removal pipelines to form a loop, creating a circulation system with the cleaning pump station. A certain concentration of acidic solution is added, which circulates through the ash water pipes for cleaning. As the acid washing decreases to a certain level, the acidic solution is continuously replenished. For short-distance single ash water pipelines, if conditions permit, a temporary pipeline can be laid to create a recirculation loop for cleaning. This process must be carried out during shutdown, and it is complex and costly.
Pilot cleaning
No two gray pipes can form a loop during cleaning; only a single gray pipe should be used for open circuit cleaning. The method involves connecting one end of the gray pipe to the cleaning unit, continuously preparing a specific concentration of cleaning solution in the fluid tank, and then injecting it into the gray pipe continuously or intermittently. This process requires additional cleaning equipment during shutdown, leading to higher costs.
Continuous operation cleaning
The process involves continuously injecting a certain amount of acidic solution while operating under normal ash conveying conditions without interruption. Simultaneously, a certain quantity of ash conveying line running cleaning inhibitor and pipeline cleaning descaler is added for open-circuit cleaning. The main function of the cleaning aids is to promote the reaction between the acidic solution and ash deposits at a certain concentration and flow rate, while also increasing solubility in water and reducing the generation of air blockages, ensuring the quality of ash pipe cleaning.
The procedure is as follows: Before cleaning, first estimate the required acid amount based on the total scale in the pipeline. Then, calculate the acid addition rate and the flow rate for the ash slurry pipeline based on the gray water flow rate and acidity. During cleaning, take a sample at the sampling point at the front of the ash pipeline every 30 minutes to test the acidity and strictly control it by adjusting the acid flow rate. In the later stage of cleaning, take a sample at the end of the ash pipeline every 15 minutes to test the pH value. When the pH value reaches a certain level and remains unchanged for 30 minutes, the cleaning can be considered complete.
2. High-pressure water cleaning equipment:
High-pressure water jet cleaning is efficient, cost-effective, non-damaging to workpieces, environmentally friendly, easy to operate, and safe.
High-pressure water technology boasts the following advantages.
(1) Excellent Cleaning Quality: The high-pressure water jet cleaning of pipe and heat exchanger bores can completely remove scale and blockages inside, revealing the metal substrate. With its immense energy and supersonic speed, the high-pressure water jet is fully capable of destroying hard scale and blockages without causing any damage to the metal.
High-pressure water cleaning will not damage the base material to be cleaned, as the pressure is less than the compressive strength grade of metal.
(2) Fast Cleaning Speed: Due to the combined crushing effects of water jet washing, wedge splitting, shearing, and grinding, scale can be quickly broken and removed, which is several to ten times faster than traditional chemical methods, sandblasting and shot peening techniques, simple mechanical, and manual cleaning methods.
Additionally, parts cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface must be rinsed with clean water.
(3) Non-Environmental Pollution: Since high-pressure water jet cleaning uses clean water as the medium, it does not generate a large amount of dust like sandblasting, grit blasting, or simple mechanical cleaning, which can pollute the atmosphere and harm health. It also does not produce a large amount of waste liquid like some chemical cleaning methods, which can contaminate rivers, soil, and water quality. The water jet cleaning using clean water is odorless, tasteless, and non-toxic. After atomization, it can also reduce the dust concentration in the working area, lowering atmospheric dust levels from 80mg/m³ with other methods to below the national safety standards. Therefore, it does not cause any pollution.
Pipe Scale
(1) Categorized by chemical composition, they can be divided into carbonate scale, sulfate scale, silicate scale, and mixed scale. The main components of carbonate scale are calcium carbonate and magnesium carbonate; the main components of sulfate scale and silicate scale are calcium sulfate and silicate compounds, respectively.
(2) Categorized by physical properties, there are two types: scale that is firmly adhered to the pot shell and pipe walls, and sediment that is loosely textured and easily detached.
Lime scale primarily forms due to the salts like calcium and magnesium in the boiler feed water precipitating and adhering to the metal surface upon heating. Lime scale has a very low thermal conductivity, approximately 2 to 5 times that of ordinary steel. When lime scale accumulates on the boiler's heating surface, it significantly worsens the heat transfer efficiency and affects the boiler's performance; it can easily cause metal materials to burn due to localized overheating, potentially leading to pipe explosion accidents; it also accelerates galvanic corrosion, causing pipeline lime scale corrosion and speeding up the damage to the heating surface. Once lime scale forms, it should be promptly removed using mechanical or chemical methods.
Heat Exchanger and Refrigeration Equipment Cleaning - Choose GreenChem for Reliability
