Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers — GlanChem Co. offers reliable cooperation.

Jining Greentech Chemical Technology Co., Ltd. (简称 Jining Greentech Cleaning Co.) was established in 2010 and is a professional company specializing in cleaning various industrial heat exchange equipment. The company has comprehensive business philosophy and the capability to develop industrial equipment cleaning technology, undertaking cleaning services for industrial, private enterprises, corporate chemical equipment, power station equipment, condensers, boilers, and boiler air preheaters; as well as air conditioning and heat exchange equipment cleaning. We also handle cleaning of machinery and chemical equipment, and descaling of refrigeration and heating equipment.
Pipe Cleaning Manufacturer Shandong Jining Liangshan

Jining Grean Cleaning Co. has dozens of cleaning machines with 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 solution design services for industry clients.

Our company has newly acquired domestic cleaning machines and imported cleaning equipment. We have hired experienced technical specialists in the cleaning industry to achieve standardized and standardized cleaning of heat exchange equipment.

Pipe Cleaning Manufacturer - Shandong Jining Liangshan

Chemical cleaning and scaling removal process:

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two existing parallel ash line pipelines to form a loop, creating a circulating system with the cleaning pump station. A certain concentration of acidic solution is added, which circulates through the ash water pipeline 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 form a circulating loop for cleaning. This process must be carried out during shutdown, and it is complex and costly.

Pilot cleaning

No two ash pipes should form a loop during cleaning; only a single ash pipe should be used for open-circuit cleaning. The method involves connecting one end of the ash pipe to the cleaning unit, continuously preparing a certain concentration of cleaning solution in the solution tank, and then continuously or intermittently injecting it into the ash pipe. This process requires adding cleaning equipment during shutdown, which increases costs.
Pipeline Cleaning Manufacturer, Shandong Jining Liangshan

Continuous operation cleaning

The process involves continuously injecting a certain amount of acid solution while the ash pipe is operating normally without interruption. Simultaneously, a specific quantity of ash pipe operation cleaning inhibitor and pipeline descaler is added for cleaning. This is an open-loop cleaning method. The primary role of the cleaning additive is to promote the reaction between the acid solution and the ash scale at a certain concentration and flow rate, while also increasing its solubility in water and reducing the formation of air blockages, ensuring the quality of ash pipe cleaning.

Operation procedure: 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 adding sludge pipeline cleaning inhibitor and pipeline descaler according to the flow rate of grey water and acidity. During cleaning, take a sample at the sampling point at the front of the grey pipe every 30 minutes to test the acidity, and strictly control the acidity by adjusting the acid flow rate. In the later stage of cleaning, take a sample at the end of the grey pipe 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.
Pipe Cleaning Manufacturer - Shandong Jining Liangshan

2. High-pressure water jet cleaning machinery
High-pressure water jet cleaning offers advantages such as high efficiency, low cost, non-damaging to workpieces, environmental protection, ease of operation, and safety.
The advantages of high-pressure water technology include:

(1) Excellent Cleaning Quality - The high-pressure water jet cleaning of pipe and heat exchanger bores can thoroughly remove scale and blockages from inside, revealing the metal substrate. The high-pressure water jet, with its immense energy and supersonic speed, can completely destroy hard scale and blockages without causing any damage to the metal.

The high-pressure water's pressure is less than the tensile strength grade of metal, so high-pressure cleaning will not damage the base being cleaned.
Pipe Cleaning Manufacturer - Shandong Jining Liangshan

(2) Fast Cleaning Speed: Due to the combined action of jet washing, wedging, shearing, and grinding, scale can be quickly broken and removed, making the cleaning process several to ten times faster than traditional chemical methods, sandblasting, simple mechanical, and manual methods.

Components cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface chemical agents must be rinsed off with clean water.
Pipe Cleaning Manufacturer - Shandong Jining Liangshan

(3) No Environmental Pollution: Since high-pressure water jet cleaning uses pure water as the medium, it does not generate a large amount of dust like sandblasting, shot blasting, or simple mechanical cleaning, which can pollute the atmosphere and harm health. It also does not produce a large volume of waste liquid like some chemical cleaning methods, which can contaminate rivers, soil, and water quality. The water jet cleaning with pure water as the medium is odorless, tasteless, and non-toxic. After atomization, it can also reduce the dust concentration in the work area, lowering atmospheric dust from 80mg/m³ with other methods to below the national safety standards, thus causing no pollution.

Pipe Scale

(1) Categorized by chemical composition, they include carbonate scale, sulfate scale, silicate scale, and mixed scale. The main components of carbonate scale are calcium carbonate and magnesium carbonate; the primary components of sulfate and silicate scales are calcium sulfate and silicate compounds, respectively. Mixed scale is typically a combination of the above three types.

(2) Categorized by physical properties, there are two types: a hard scale that firmly adheres to the pot shell and tube walls, and a loose sediment that is easily detached.
Lime scale primarily forms due to the salts of calcium, magnesium, and other minerals in the boiler feed water, which precipitate and adhere to the metal surface upon heating. Lime scale has a very low thermal conductivity, approximately 2-5 times that of ordinary steel. When lime scale accumulates on the boiler's heating surface, it significantly deteriorates the heat transfer efficiency, affecting the boiler's performance; it also tends to damage metal materials by localized overheating, potentially leading to pipe explosion accidents; it accelerates galvanic corrosion, causing pipeline lime scale corrosion, and speeding up the deterioration of the heating surface. Once lime scale forms, it should be promptly removed using mechanical or chemical methods.

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