For safety, quality, security, use Kaydeli!
For safety, quality, security, use Kaydeli!
CIP (Cleaning In Place) is an in-situ cleaning system, which means that the entire production line is cyclically cleaned and disinfected in a closed loop without manual disassembly or opening. It is an ideal method for cleaning equipment and pipelines. It has been widely used in the food, beverage, biopharmaceutical, and chemical industries, especially the dairy industry, and has been automated.
A standard CIP process includes: pre-rinse → alkaline wash → acid wash → final rinse → sterilization, with precise temperature requirements for each phase:
Stage | Cleaning Medium | Temperature Requirements | Function |
Alkaline Cleaning | NaOH Solution | 70 - 85°C (High - temperature dissolves organic substances) | Remove residues such as proteins and fats |
Acid Cleaning | HNO₃ Solution | 50 - 60°C (Prevent crystallization, remove inorganic salts) | Dissolve mineral deposits and neutralize alkaline residues |
Final Rinsing | Pure Water / RO Water | Normal temperature or cold water (20 - 25°C) | Thoroughly remove residual cleaning agents |
Sterilization | Hot Water / Steam | ≥90°C (Moist heat sterilization) | Kill microorganisms to ensure a sterile environment |
(CIP system process and temperature requirements)
A CIP system primarily consists of:
Acid/alkali tanks
Water tanks
Concentrated acid/alkali storage tanks
Heating system
Diaphragm pumps
High/low-level sensors
Online pH/concentration detectors
PLC-controlled HMI
(Schematic diagram of CIP system)
Heating System Criticality:
Traditional CIP heating relies on steam or electric heaters, which incur high energy costs and significant waste heat.
A dairy product manufacturer in Inner Mongolia uses a traditional CIP system to periodically clean the storage tanks, pipes and filling equipment in the production line. The original system relied on electric heaters to provide high-temperature cleaning water above 80°C, which had high energy consumption and high operating costs. With the rise in energy prices and the advancement of carbon neutrality goals, the company decided to introduce heat pump technology to transform the CIP system for energy saving.
Energy consumption pain points:
The power of the electric heater is 120kW, and the annual power consumption is about 500,000 kWh, accounting for 70% of the total energy consumption in the cleaning process.
Washing wastewater (temperature of about 45°C) is directly discharged, and the waste heat is not recovered, resulting in energy waste.
Operational costs:
The electricity cost is about 350,000 yuan/year, and the carbon emissions reach 420 tons of CO₂/year.
Process requirements:
The temperature requirements of multi-stage cleaning must be met
(20°C→75°C→60°C→85°C).
After inspecting the pipelines of the CIP workshop and having a detailed understanding of the characteristics of dairy product production, KAYDELI technicians developed a heating scheme after determining the heating capacity range.
A high-temperature heat pump unit + heat recovery module was used to replace the traditional electric heater and integrated with the CIP system. Two KAYDELI air source high-temperature heat pumps were selected, with a single heating capacity of 80kW. At the same time, a plate heat exchanger was installed in the wastewater discharge pipeline to use the waste heat of the wastewater for preheating the incoming water, with a recovery efficiency of ≥60%.
(Process pipeline design drawing, for reference only)
After the scheme design, the process flow can be optimized:
Pre-rinsing stage
20℃ normal temperature water is heated to 35℃ after waste heat recovery, reducing the subsequent heating load.
Alkali washing/pickling stage
The heat pump raises the water temperature to 75℃/60℃, which saves 65% energy compared to electric heating.
High-temperature sterilization stage
The heat pump maintains 85℃ hot water supply under partial load, and gives priority to heat storage during off-peak electricity price periods.
Proven Outcomes:
Energy Efficiency: 65% reduction in heating energy use.
Precision Control: Inverter-driven heat pumps dynamically adjust temperatures across CIP phases, eliminating overheating waste.
Circular Thermal Management: 35°C preheated feedwater reduces downstream heating load.
Sustainability Impact:
Slashed annual energy costs and carbon footprint.
Enabled "negative-carbon cleaning" for high-frequency, high-temperature industries (food, pharma, biotech).
Kaideli's industrial high-temperature heat pump technology empowers the CIP cleaning system, helping enterprises achieve the dual goals of energy saving and cost reduction and green transformation, and provides a replicable model for the sustainable upgrading of traditional industrial processes.
Special for CIP cleaning system-industrial high-temperature heat pump is especially suitable for industries such as food and beverage, biological fermentation, and medicine that require high-frequency and high-temperature cleaning, promoting the industry into the era of "negative carbon cleaning".
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