Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers. GlanChem Co., Ltd. guarantees cooperation.

Jining Green Chemical Technology Co., Ltd. (abbreviated to 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, handling cleaning services for industrial, private enterprise, and corporate chemical equipment, power station equipment, condensers in power plants, boilers, and economizers. We also offer air conditioning cleaning, heat exchange equipment cleaning, and accept cleaning assignments for machinery and chemical equipment. Additionally, we handle the cleaning and descaling of refrigeration and heating equipment.

Jining Grean Cleaning Co. has dozens of cleaning machines ranging from 10mpa to 250mpa and over a dozen chemical cleaning pump stations. Our main services are provided to 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.

Chemical cleaning descaling process:

Recirculating Closed Loop Cleaning

Recirculating cleaning utilizes two existing parallel ash removal pipelines to form a loop, creating a circulating 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 circulating loop for cleaning. This process must be carried out while the system is shut down, and it is complex and costly.

Breakthrough 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 liquid 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

This process involves continuously injecting a specific amount of acidic fluid while also introducing a certain quantity of ash conveyor operation cleaning inhibitor and pipeline descaling agent. This is an open-circuit cleaning method. The main function of the cleaning aids is to facilitate the reaction between the acidic fluid and the ash deposits at a certain concentration and flow rate, while also enhancing their solubility in water and reducing the occurrence of airlock, 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 for the sludge conveying pipeline by considering the gray water flow rate and acidity. During cleaning, take a sample at the front end of the sludge pipeline 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 pipeline 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 machinery
High-pressure water jet cleaning offers advantages such as high efficiency, low cost, non-damaging to workpieces, non-polluting to the environment, easy operation, and safety.
High-pressure water technology offers the following advantages.

(1) Excellent Cleaning Quality - The high-pressure water jet cleaning of pipes and the internal holes of heat exchangers can completely remove scale and blockages inside, revealing the metal substrate. With its immense energy and ultra-sonic speed, the high-pressure water jet is fully capable of destroying hard scale and blockages without causing any damage to the metal.

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

(2) Fast Cleaning Speed: Due to the combined effects of water jet washing, 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.

Additionally, parts cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface chemical must be rinsed off with clean water.

(3) Non-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, shot blasting, or simple mechanical cleaning, which can pollute the atmosphere and harm health. It also does not generate 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.

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.

(2) Categorized by physical properties, there are two types: water scale that is firmly adhered to the pot shell and pipe walls, and sediment that is loosely textured and easy to detach.
Scale primarily forms due to the salts of calcium and magnesium present in the boiler feed water, which precipitate and adhere to the metal surface upon heating. The thermal conductivity of scale is very low, approximately 2-5 times that of ordinary steel. The accumulation of scale on the boiler's heat transfer surface greatly impairs the heat transfer efficiency, affects the boiler's performance; it can easily lead to metal material failure due to local overheating, even causing pipe bursting accidents; it accelerates galvanic corrosion, leading to pipeline scale corrosion and hastening the deterioration of the heat transfer surface. Once scale forms, it should be promptly removed using either mechanical or chemical methods.

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