Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers. Glan Chemical Co., Ltd. offers guaranteed cooperation.

Jining Greentech Co., Ltd. (abbreviated to Jining Greentech Cleaning Co.) was established in 2010 and specializes in the cleaning of various industrial heat exchange equipment. The company has comprehensive business philosophy and the capability to research and develop industrial equipment cleaning technologies. It undertakes cleaning services for industrial, private enterprises, corporate chemical equipment, power station equipment, power plant condensers, boilers, and economizers. Services also include air conditioning and heat exchange equipment cleaning, as well as cleaning for machinery and chemical equipment. Additionally, it handles the cleaning and descaling of refrigeration and heating equipment.

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Jining Green Clean Company stocks 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 mills, food factories, enterprises and institutions, heating equipment, etc. The company also offers long-term industrial heat exchanger cleaning and solution design services 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 descaling process:

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two existing parallel ash pipeline lines to form a loop, creating a recirculation system with the cleaning pump station. A certain concentration of acidic solution is added, which circulates within the ash water pipes for cleaning. As the acid washing reduces to a certain extent, 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 recirculation loop for cleaning. This process must be carried out during shutdown and is complex and costly.

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Open Channel Cleaning

No two gray pipes can form a loop during cleaning; only a single gray pipe can be used for open circuit cleaning. The method involves connecting one end of the gray pipe to the cleaning unit and continuously preparing a certain concentration of cleaning solution in the liquid mixing tank, which is then continuously or intermittently injected into the gray pipe. This process requires adding cleaning equipment during shutdown, resulting in higher costs.

Non-stop cleaning

This process involves continuously injecting a certain amount of acidic solution while operating the ash conveying pipes, simultaneously introducing a certain quantity of ash conveying pipe running cleaning inhibitor and pipeline cleaning stripping agent for open circuit cleaning. The primary role of the cleaning aid is to promote the reaction between the acidic solution and ash deposits at a certain concentration and flow rate, while also enhancing its solubility in water, reducing air blockage, and 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 of the descaling agent and pipeline cleaner 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 stages of cleaning, take a sample 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.


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.
The advantages of high-pressure water technology include:

(1) Excellent Cleaning Quality: High-pressure water jet cleaning of pipe and heat exchanger bores can thoroughly remove scaling and obstructions, revealing the metal surface. The high-pressure water jet, with its immense energy and supersonic speed, can completely destroy tough scaling and obstructions without causing any damage to the metal.

Since the pressure of high-pressure water is less than the compressive strength grade of metal, high-pressure cleaning will not damage the base material being cleaned.

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(2) Fast Cleaning Speed: Due to the combined action of jet washing, wedge splitting, shearing, and grinding, scale can be quickly broken and removed, making the cleaning speed several to tens of 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 must be rinsed with clear water.

(3) No Environmental Pollution: As high-pressure water jet cleaning uses pure water as the medium, it does not produce 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 generate 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 levels from 80mg/m³ using other methods to below the national safety standards, thus ensuring no pollution is caused.

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Pipe Scale

(1) Classified by chemical composition, it can be divided 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 of scales.
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(2) Categorized by physical properties, there are two types: water scale that firmly adheres to the pot shell and pipe walls, and sediment that is loosely textured and easily detached.
Lime scale primarily forms due to the salts of 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, around 2 to 5 times less than ordinary steel, and when it accumulates on the boiler's heat transfer surface, it significantly worsens heat transfer efficiency, affecting the boiler's performance; it can also easily cause metal materials to burn due to local overheating, potentially leading to burst pipe accidents; it accelerates galvanic corrosion, causing pipeline lime scale corrosion, and speeds up the damage to the heat transfer surface. Once lime scale forms, it should be promptly removed using either mechanical or chemical methods.

Heat Exchanger & Refrigeration Equipment Cleaning - Choose Greentech Chemicals with Confidence