Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant equipment 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 is a professional company specializing in the cleaning of various industrial heat exchange equipment. The company boasts comprehensive business philosophy and the ability to research and develop industrial cleaning technologies. We undertake cleaning services for industrial, private enterprises, 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. We also handle cleaning of refrigeration and heating equipment for scale removal.
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Jining Grean Cleaning Co. has 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 are provided to power plants, chemical factories, oil refineries, food processing plants, corporate entities, heating equipment, and more. The company also offers 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 to standardize and normalize the cleaning of heat exchange equipment.

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Chemical Cleaning Scale Removal Process

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two original parallel ash 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 reaches a certain level, the solution is continuously replenished with more acid. 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 while the system is offline, and it is complex and costly.
PPR Pipe Cleaning, Linying, Liaocheng, Shandong

Breakbulk Cleaning

No two grey pipes should form a loop during cleaning; only a single grey pipe should be used for open circuit cleaning. The method involves connecting one end of the grey pipe to the cleaning unit, continuously preparing a certain concentration of cleaning solution in the fluid tank, and then continuously or intermittently injecting it into the grey pipe. This process requires additional cleaning equipment during shutdown, resulting in higher costs.
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Continuous cleaning without shutdown

The process involves continuously injecting a certain amount of acidic solution while the ash pipe is operating normally without interruption, simultaneously adding a specific quantity of ash-pipe running cleaning inhibitor and pipeline descaling agent. This is an open-circuit cleaning method. The main function of the cleaning aid is to promote the reaction between the acidic solution and the ash scale at a certain concentration and flow rate, while also increasing its solubility in water and reducing the occurrence of air blockages, ensuring the quality of ash-pipe cleaning.

The procedure is as follows: Before cleaning, 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 rate and acidity. During cleaning, take a sample at the front end of the sludge pipe every 30 minutes to test the acidity and strictly control it by adjusting the acid flow rate. In the later stage of cleaning, test the pH value at the end of the sludge pipe every 15 minutes. When the pH value reaches a certain level and remains unchanged for 30 minutes, the cleaning can be considered complete.


2. High-pressure water jet cleaning machinery
High-pressure water jet cleaning offers high efficiency, low costs, non-damaging to workpieces, environmental protection, 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 can completely remove all scaling and obstructions from inside the pipes, revealing the metal substrate. The high-pressure water jet, with its immense energy and supersonic speed, is fully capable of destroying hard 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 substrate being cleaned.
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(2) Fast Cleaning Speed: Due to the combined effects of jet washing, wedging, shearing, and grinding, scale can be quickly broken and removed, several to ten times faster than traditional chemical methods, sandblasting, ball-blasting, simple mechanical, and manual cleaning methods.

Components cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface must be washed with clear water.
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(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 significant amount of waste liquid like some chemical cleaning methods, which can contaminate rivers, soil, and water quality. The water jet cleaning using pure water 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 using other methods to below the national safety standards, thus causing no pollution.

3. Pipe Scale

(1) Classified by chemical composition, they can be categorized into carbonate scale, sulfate scale, silicate scale, and mixed scale, etc. 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; mixed scale is usually a mixture of the above three types.

(2) Categorized by physical properties, there are two types: scale that firmly adheres to the pot shell and tube walls, and sediment that is loosely textured and easily detachable.
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. The thermal conductivity of lime scale is very low, approximately 2 to 5 times that of ordinary steel. Lime scale deposited on the boiler's heating surface significantly worsens heat transfer efficiency, affecting the boiler's performance; it can easily cause metal materials to burn due to localized overheating, potentially leading to tube explosion accidents; it also accelerates galvanic corrosion, causing pipeline lime scale corrosion and speeding up the damage to the heating surface. Lime scale should be promptly removed using mechanical or chemical methods after it forms.

Heat Exchanger and Refrigeration Equipment Cleaning - Choose GreenChem for Reliability