Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant economizers. Greentech Chemicals offers guaranteed cooperation.

Jining Green Chemical Technology Co., Ltd. (abbreviated as 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 economizers. We also provide air conditioning and heat exchange equipment cleaning, as well as mechanical and chemical equipment cleaning. In addition, we handle the cleaning of refrigeration and heating equipment for scale removal.
Scale Cleaner Shandong Qingdao Huangdao

Jining Green Clean Co. offers dozens of cleaning machines in various models ranging from 10mpa to 250mpa, as well as over a dozen chemical cleaning pump stations. Our primary services are to 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 design solutions 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.

Scale Cleaning Agent, Qingdao Huangdao, Shandong

Chemical Cleaning and Scale Removal Process:

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two existing parallel ash pipeline sections to form a loop, creating a recirculation system with the cleaning pump station. A solution of a certain acidity concentration is added, which circulates through the ash water pipes for cleaning. As the acid washing reduces to a certain extent, acid 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 while the system is shut down, and it is complex and costly.

Open road cleaning

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

Continuous Operation Cleaning

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 primary function of the cleaning aids 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: 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 ash-carrying pipe by considering the sludge flow rate and acidity. During cleaning, take samples at the front sampling point of the ash 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 ash 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.
Scale Cleaner Shandong Qingdao Huangdao

2. High-pressure water jet cleaning equipment
High-pressure water jet cleaning offers high efficiency, low costs, non-damaging to workpieces, environmental protection, ease of operation, and safety advantages.
High-pressure water technology offers the following advantages.

(1) Excellent Cleaning Quality: During high-pressure water jet cleaning of pipes and the internal cavities of heat exchangers, all scaling and obstructions within the pipes are thoroughly removed, revealing the metal substrate. The high-pressure water jet, with its immense energy and ultra-sonic speed, is fully capable of destroying hard scaling and obstructions without causing any damage to the metal.

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

(2) Fast Cleaning Speed - Due to the combined crushing effects of water jet scouring, wedge splitting, shearing, and grinding, scaling can be quickly broken and removed, which is several to ten times faster than traditional chemical methods, sandblasting and shot peening techniques, 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 off with clear water.
Scale Cleaner Shandong Qingdao Huangdao

(3) No Environmental Pollution: Since high-pressure water jet cleaning uses pure water as the medium, it does not generate large amounts of dust like sandblasting, shot blasting, or simple mechanical cleaning, which can pollute the air 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.

Scale Cleaner, Qingdao Huangdao, Shandong

Pipe Scale

(1) Classified by chemical composition, it can be categorized into carbonate scale, sulfate scale, silicate scale, and mixed scale, among others. 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.
Scale cleaner Shandong Qingdao Huangdao

(2) Classified by physical properties, there are two types: hard scale that firmly adheres to the pot shell and tube walls, and loose sediment that is 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 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