Sugar mill evaporator cleaning, Shandong Weifang, Changle

Wash various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers - GreenChem Co. guarantees cooperation.

Jining Greentech Chemical Technology Co., Ltd. (abbreviated to Jining Greentech Cleaning Co.) was established in 2010 and is a professional company specializing in cleaning various industrial heat exchange equipment. The company has comprehensive business philosophy and the capability to develop industrial equipment cleaning technologies, undertaking cleaning services for industrial, private enterprises, corporate chemical equipment, power station equipment, power plant condensers, boilers, and boiler air preheaters; as well as air conditioning cleaning, heat exchange equipment cleaning, and mechanical and chemical equipment cleaning. We also handle cleaning and descaling of refrigeration and heating equipment.
Sugar mill evaporator cleaning, Shandong Weifang, Changle

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, ensuring the cleaning of heat exchange equipment is standardized and regulated.

Sugar Mill Evaporator Cleaning in Changle, Weifang, Shandong

Chemical Cleaning Scale 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 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 while the system is shut down, and it is complex and costly.
Sugar Mill Evaporator Cleaning in Changle, Weifang, Shandong

Open-channel cleaning

No two grey pipes can form a loop during cleaning; only single-pipe open circuit cleaning is allowed. The method involves connecting one end of the grey pipe to the cleaning unit, continuously preparing a certain concentration of cleaning solution in the blending tank, and injecting it into the grey pipe continuously or intermittently. This process requires adding cleaning equipment while the system is offline, which increases costs.
Sugar mill evaporator cleaning in Changle, Weifang, Shandong

Non-stop cleaning

The process involves continuously injecting a certain amount of acidic solution while the ash pipe is operating normally and not stopped, simultaneously adding a specific quantity of ash pipe running cleaning inhibitor and pipeline cleaning descaler for open circuit cleaning. The primary function of the cleaning aid 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 occurrence of air blockage, and ensuring the quality of ash pipe cleaning.

Operation method: 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 ash slurry pipeline operation by considering the flow rate of the grey water and acidity. During the cleaning process, collect samples at the front of the ash pipe every 30 minutes to test the acidity, and strictly control the acidity by adjusting the flow rate of the acid addition. In the later stage of cleaning, collect 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 process can be considered 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, environmental friendliness, ease of operation, and safety.
Advantages of high-pressure water technology include:

(1) High-quality Cleaning: During the high-pressure water jet cleaning of pipelines and internal surfaces of heat exchangers, all scaling and blockages inside the pipes are thoroughly removed, revealing the metal surface. The high-pressure water jet, with its immense energy and supersonic movement, can completely break down hard scaling and blockages, but it does not damage the metal.

Since the pressure of high-pressure water is less than the pressure resistance grade of metal, high-pressure cleaning will not damage the base material being cleaned.
Sugar Mill Evaporator Cleaning in Changle, Weifang, Shandong

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

Components cleaned with high-pressure water jet 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. Nor does it 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, the emitted jet can also reduce the dust concentration in the work area, lowering atmospheric dust levels from 80mg/m³ with other methods to below the national safety standards, thus causing no pollution.

Sugar Mill Evaporator Cleaning in Changle, Weifang, Shandong

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) Categorized by physical properties, there are two types: a sturdy scale that firmly adheres to the pot shell and tube walls, and a loose sediment that is easily detached.
Lime scale primarily forms due to the salts of calcium, magnesium, and others in the boiler feed water that precipitate and adhere to the metal surface upon heating. The thermal conductivity of lime scale is very low, around 2 to 5 times that of ordinary steel. Lime scale on the boiler's heating surface greatly deteriorates heat transfer efficiency and affects the boiler's performance; it can easily cause metal materials to burn out due to localized overheating, even leading to pipe explosion accidents; it accelerates galvanic corrosion, causing pipeline lime scale corrosion, and speeding up the damage to the heating surface. Lime scale should be removed promptly using mechanical or chemical methods.

Heat Exchanger and Refrigeration Equipment Cleaning - Choose GreenChem for Reliability