Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers. Greentech Chemicals offers reliable collaboration.

Jining Green Chemical Technology Co., Ltd. (abbreviated to Jining Green Cleaning Co.) was established in 2010 and is a professional company specializing in the cleaning of 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 boiler air preheaters; as well as air conditioning and heat exchange equipment cleaning. We also handle cleaning and descaling of refrigeration and heating equipment.
Boiler high-pressure water cleaning in Gaotang, Liaocheng, Shandong

Jining Grean Cleaning Co. offers dozens of cleaning machines with various models ranging from 10MPa to 250MPa, as well as over a dozen chemical cleaning pump stations. Our main services include power plants, chemical factories, oil mills, food factories, corporate entities, heating equipment, and more. 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've hired experienced technical specialists in the cleaning industry to standardize and regulate the cleaning process for heat exchange equipment.

Boiler High-Pressure Water Cleaning in Gaotang, Liaocheng, Shandong

Chemical descaling process:

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two existing parallel deslagging pipelines to form a loop, creating a recirculation system with the cleaning pump station. It introduces a solution of a certain acidity concentration, which circulates and cleans within the sludge water pipeline. As the acid washing reaches a certain level, acid is continuously replenished. For short-distance single sludge water pipelines, if conditions permit, a temporary pipeline can be laid to form a recirculation loop for cleaning. This process must be carried out while the system is offline, and it is complex and costly.

Breakdown Cleaning

During cleaning, two grey pipes cannot form a loop; only a single grey pipe can be used for open-path cleaning. The method involves connecting one end of the grey pipe to the cleaning device, continuously preparing a certain concentration of cleaning solution in the solution tank, and injecting it into the grey pipe continuously or intermittently. This process requires adding cleaning equipment during shutdown, resulting in higher costs.

Continuous Cleaning

The process involves continuously injecting a certain amount of acidic solution while operating the ash transfer pipes, simultaneously introducing a specific quantity of ash transfer pipe running cleaner and pipeline descaler for cleaning, and performing an open circuit wash. The primary role 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 enhancing solubility in water, reducing air blockage, and ensuring the quality of ash pipe cleaning.

The procedure is: Prior to 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 of the descaling agent and pipeline cleaning agent based on the sludge water flow and acidity. During cleaning, collect samples at the sampling point at the front end of the sludge 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 samples at the end of the sludge 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.
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2. High-pressure water jet cleaning equipment
High-pressure water jet cleaning offers advantages such as high efficiency, low cost, non-damaging to workpieces, environmental friendliness, ease of operation, and safety.
High-pressure water technology boasts the following advantages.

(1) Excellent Cleaning Quality - High-pressure water jet cleaning of pipe and heat exchanger bores effectively removes all scaling and obstructions from within the pipes, revealing the metal surface. The high-pressure water jet, with its immense energy and supersonic speed, is fully capable of destroying tough scaling and obstructions without causing any damage to the metal.

Due to the pressure of high-pressure water being less than the compressive strength grade of metal, high-pressure cleaning will not damage the base being cleaned.
Boiler High-Pressure Water Cleaning in Gaotang, Liaocheng, Shandong

(2) Rapid Cleaning Speed: Due to the combined abrasive actions of water jetting, wedging, shearing, and grinding, scaling can be quickly disintegrated and removed, making the cleaning process several to ten times faster than traditional chemical methods, sandblasting, ball shotting, simple mechanical, and manual methods.

Additionally, parts 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.

(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 amount 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, the emitted jet 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.

Boiler high-pressure water cleaning in Gaotang, Liaocheng, Shandong

3. Pipe Scale

(1) Categorized by chemical composition, they include carbonate scale, sulfate scale, silicate scale, and mixed scale, among others. 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 usually a combination of the three types.
Boiler High-Pressure Water Cleaning in Gaotang, Liaocheng, Shandong

(2) Classified by physical properties, there are two types: water scale that is firmly adhered to the pot shell and tube walls, and sediment that is loosely textured and easy to dislodge.
Lime scale primarily forms due to the salts of calcium and magnesium 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 to 5 times that of ordinary steel. When lime scale accumulates on the boiler's heat transfer surface, it severely degrades heat transfer efficiency and affects the boiler's performance; it can also easily damage metal materials due to localized overheating, potentially leading to pipe explosion accidents; it accelerates galvanic corrosion, causing pipeline lime scale corrosion, and speeds up the deterioration of the heat transfer surface. Once lime scale forms, it should be promptly removed using mechanical or chemical methods.

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