Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant equipment condensers. Greenclean Chemical Co. offers reliable cooperation.

Jining Green Chemical Technology Co., Ltd. (简称 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 has the capability to develop comprehensive business philosophy and industrial equipment cleaning technology, and undertakes cleaning services for industrial, private enterprises, corporate chemical equipment, power plant equipment, condensers, boilers, and boiler air preheaters; as well as air conditioning cleaning, heat exchange equipment cleaning, and cleaning of machinery and chemical equipment. We also handle cleaning of refrigeration equipment and heating equipment for scale removal.
Horizontal Tube Type Primary Condenser Cleaning - Condenser Cleaning in Bo Mountain, Zibo, Shandong

Jining Grean Cleaning Co. has dozens of cleaning machines with pressure ratings ranging from 10mpa to 250mpa, and over a dozen chemical cleaning pump stations. We primarily serve power plants, chemical factories, oil refineries, food processing plants, corporate entities, and heating equipment. Additionally, the company has been providing industrial heat exchanger cleaning and design solutions to industry clients for an extended period.

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 regulated cleaning of heat exchange equipment.

Chemical cleaning and scaling removal process:

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two existing parallel ash removal pipelines to form a loop, creating a recirculation system with the cleaning pump station. A solution of a certain concentration is added, which circulates through the ash water pipeline for cleaning. Additionally, acid is continuously replenished as the acid washing process reaches a certain level. 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 while the system is shut down, and it is complex and costly.

Horizontal Tube Primary Condenser Cleaning, Steam Condenser Cleaning - Zibo, Bo Mountain, Shandong

Open road cleaning

During cleaning, no two grey pipes should form a loop; only a single grey pipe should be used for open-loop cleaning. The method involves connecting one end of the grey pipe to the cleaning unit and continuously preparing a specific concentration of cleaning solution in the dosing tank, then injecting it into the grey pipe continuously or intermittently. This process requires additional cleaning equipment during shutdown, which increases costs.

Horizontal Tube Primary Condenser Cleaning, Condenser Cleaning in Bo Mountain, Zibo, Shandong

Continuous Operation Cleaning

The process involves continuously injecting a certain amount of acidic solution while simultaneously introducing a specific quantity of slurry pipeline cleaning inhibitor and pipeline descaling agent. This is an open-loop cleaning method. The main function of the cleaning aids is to facilitate the reaction between the acidic solution and the ash scale at a certain concentration and flow rate, while also enhancing its solubility in water, reducing air blockage, and ensuring the quality of the ash pipe cleaning.

The procedure is: 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 cleaning agent based on the sludge water flow and acidity. During cleaning, take a sample at the sampling point 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, 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 deemed 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.
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 inside, revealing the metal substrate. The high-pressure water jet, with its immense energy and supersonic speed, is fully capable of destroying hard scale and blockages 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.

(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 process several to ten times faster than traditional chemical methods, sandblasting, simple mechanical, and manual 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) 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.

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.

(2) Classified by physical properties, there are two types: hard scale that firmly adheres to the pot and tube walls, and soft sediment that is easily dislodged.
Lime scale primarily forms due to the salts like 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 less than 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 Confidence