Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers — GlanChem Cooperation Ensures Reliability

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 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 cleaning for machinery and chemical equipment. We also handle cleaning and descaling of refrigeration and heating equipment.
Cooling Tower Cleaning - Scale Cleaning Agent, Jinxiang, Jining, Shandong

Jining Grean Cleaning Co. offers a wide range of cleaning machines from 10mpa to 250mpa, with dozens of units available. We also provide over a dozen chemical cleaning pump stations. Our primary services include 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 achieve standardized and standardized cleaning of heat exchange equipment.

Cooling Tower Cleaning - Scale Remover, Jinxiang, Jining, Shandong

Chemical Cleaning Scale Removal Process

Recirculating Closed Circuit Cleaning

Recirculating cleaning utilizes two existing parallel ash piping lines to form a loop, creating a recirculation system with the cleaning pump station. A certain concentration of acidic solution is added, allowing the ash water to circulate and clean within the pipes. As the acid cleaning process reduces the acidity to a certain level, more acid solution is continuously added. For short-distance single ash water pipes, if conditions permit, a temporary pipeline can be laid to create a recirculation loop for cleaning. This process must be carried out during shutdown, is complex, and has a high cost.

Pilot cleaning

No two ash pipes should form a loop during cleaning; only single-pipe open circuit cleaning is allowed. 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 injecting it into the ash pipe continuously or intermittently. This process requires adding cleaning equipment while the system is shut down, which increases costs.

Continuous cleaning without shutdown

This process involves continuously injecting a certain amount of acidic solution while the ash pipe is operating normally and continuously conveying ash, simultaneously adding a certain quantity of ash pipe running cleaning inhibitor and pipeline descaling agent, and performing an open circuit cleaning. The main function of the cleaning aid is to promote the reaction between the acidic solution and ash scale at a certain concentration and flow rate, while also increasing its solubility in water, reducing the generation of air blockage, and ensuring the quality of ash pipe cleaning.

Operation method: Prior to cleaning, first estimate the required acid quantity based on the total scaling in the pipeline. Then, calculate the acid addition rate and the flow rate for adding the descaling and corrosion inhibitor to the slurry pipeline according to the slurry flow rate and acidity. During cleaning, take a sample at the sampling point at the front end of the slurry pipe every 30 minutes to test the acidity, and strictly control the acidity by adjusting the flow rate of acid addition. In the latter stage of cleaning, take a sample every 15 minutes at the end of the slurry pipe to test the pH value. When the pH value reaches a certain level and remains unchanged for 30 minutes, the cleaning process can be deemed complete.
Cooling Tower Cleaning - Scale Remover, Shandong Jining Jinxian

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.
High-pressure water technology offers the following advantages.

(1) Excellent Cleaning Quality: During the high-pressure water jet cleaning of pipelines and heat exchanger bores, all scale and blockages inside the pipes are thoroughly removed, revealing the metal substrate. The high-pressure water jet, with its immense energy and supersonic movement, 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 substrate being cleaned.

(2) Rapid Cleaning Speed: Due to the combined abrasive actions of water jet washing, wedge splitting, shearing, and grinding, scale can be quickly broken and removed, making the cleaning process several to tens of times faster than traditional chemical methods, sandblasting and shot peening, 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 produce a large amount of dust like sandblasting 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 with pure water as the medium is odorless, tasteless, and non-toxic. After atomization, it can also reduce the dust concentration in the working area, lowering atmospheric dust from 80mg/m³ using other methods to below the national safety standards, thus causing no pollution.

Pipe Scale

(1) Classified by chemical composition, they include 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.

(2) Categorized by physical properties, there are two types: a hard scale that firmly adheres to the pot shell and pipe walls, and a loose sediment that is easy to dislodge.
Scale primarily forms due to the salts like calcium and magnesium present in the boiler feed water that precipitate and adhere to the metal surface upon heating. The thermal conductivity of scale is very low, approximately 2 to 5 times that of ordinary steel. Scale on the boiler's heat-absorbing surface greatly deteriorates 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 scale corrosion and speeding up the damage to the heat-absorbing surface. Once scale forms, it should be promptly removed using mechanical or chemical methods.

Heat Exchanger & Refrigeration Equipment Cleaning - Choose GreenChem for Reliability