Wash various heat exchangers, condensers, industrial pipelines, boilers, and condensers for power plant equipment. GreenChem Co. offers reliable collaboration.

Jining Grean Chemical Technology Co., Ltd. (Abbreviated as Jining Grean Cleaning Co.) was established in 2010 and is a professional company specializing in cleaning various industrial heat exchange equipment. The company has comprehensive business concepts and the capability to research and develop industrial cleaning technologies, taking on cleaning projects for industrial, private enterprises, chemical equipment, power plant equipment, condensers, boilers, and air preheaters. We also handle air conditioning and heat exchange equipment cleaning, as well as cleaning machinery and chemical equipment. In addition, we undertake cleaning services for refrigeration and heating equipment to remove scale.
Coal Mine Power Plant Condenser Cleaning - Shandong Yantai, Laizhou

Jining Green Cleaning Company stocks dozens of cleaning machines in various models ranging from 10mpa to 250mpa, as well as over a dozen chemical cleaning pump stations. Our primary service sectors include power plants, chemical factories, oil refineries, food factories, corporate entities, and heating equipment. 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 regulate the cleaning of heat exchange equipment.

Chemical cleaning scale removal process:

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two original parallel ash removal pipelines to form a loop, creating a recirculation system with the cleaning pump station. A certain concentration of acidic solution is added, which circulates through the ash water pipeline for cleaning. As the acid washing reaches a certain level, 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.
Coal mine power plant condenser cleaning, Shandong Yantai Laizhou

Pilot Cleaning

No two ash pipes can form a loop during cleaning; only single ash pipe open-loop cleaning is allowed. The method involves connecting one end of the ash pipe to the cleaning unit and continuously preparing a specific concentration of cleaning solution in the dosing tank, then injecting it into the ash pipe continuously or intermittently. This process requires adding cleaning equipment during shutdown, resulting in higher costs.
Coal mine power plant condenser cleaning, Shandong Yantai Laizhou

Continuous cleaning without shutdown

The process involves continuously injecting a certain amount of acidic solution while operating the ash conveying pipeline, simultaneously introducing a specific quantity of ash conveying pipeline operation cleaning inhibitor and pipeline cleaning descaler for open-loop cleaning. The primary function of the cleaning additive 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, reducing the formation of air blockages, and 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 removal agent and pipeline cleaner based on the gray water flow rate and acidity. During cleaning, take samples at the sampling point at the front end of the ash pipe every 30 minutes to test the acidity and strictly control it by adjusting the flow rate of acid addition. 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.
Coal mine power plant condenser cleaning, Shandong Yantai, Laizhou

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) Superior Cleaning Quality: During high-pressure water jet cleaning of pipe interiors and heat exchanger bores, all scale and blockages are thoroughly removed, revealing the metal surface. The high-pressure water jet, with its immense energy and ultra-sonic velocity, can completely destroy stubborn scale and blockages, yet it has no detrimental effect on 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 material being cleaned.

(2) Fast Cleaning Speed: Due to the combined effects of jet washing, splitting, shearing, and abrasive cutting, scale can be quickly broken and removed, making the cleaning speed several to ten times faster than traditional chemical methods, sandblasting, simple mechanical, and manual methods.

Components cleaned with high-pressure water jetting do not require a secondary cleaning process; however, after chemical cleaning, the surface must be rinsed with clean water.
Coal mine power plant condenser cleaning, Shandong Yantai Laizhou

(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.

Coal Mine Power Plant Condenser Cleaning - Shandong Yantai Laizhou

Pipe Scale

(1) Classified by chemical composition, they 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.
Coal-fired power plant condenser cleaning in Laizhou, Yantai, Shandong

(2) Classified 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 detached.
Scale primarily forms due to the salts containing calcium and magnesium in the boiler feed water, which precipitate and adhere to the metal surface upon heating. The thermal conductivity of scale is very low, about 2 to 5 times that of ordinary steel. Scale buildup on the boiler heating surface significantly worsens heat transfer efficiency and affects the boiler's performance; it can easily cause metal materials to burn due to local overheating, potentially leading to pipe burst accidents; it also accelerates galvanic corrosion, causing pipeline scale corrosion and speeding up the damage to the heating surface. Once scale forms, it should be removed promptly using mechanical or chemical methods.

Heat exchanger and refrigeration equipment cleaning, choose GreenChem for reliability.