The CIP system is a cleaning method mainly used to clean:
- Sanitary Process Line
- Vessel
- Common equipment in breweries
Importance of using chemicals in the CIP cycle
These chemicals include:
- Caustic
- Scid
- Sanitizer/Disinfectant
- Sterilizer
- Lowers the surface tension of the water, making it easier for the cleaning solution to penetrate the soil.
- Breaks down the direct bond between soil and equipment surfaces.
- Soften the fat so that it can be rinsed off in the next step.
- Dissolves dirt for easy cleaning.
- Emulsifies water-soluble soils in the cleaning solution for easy transport.
Caustic
- Typically used as the primary cleaner in most CIP wash cycles.
- Soften the fat, making it easier to remove from the device.
- The foam-free formula helps reduce pump cavitation and increases cleaning efficiency.
Acid
- Ideal for brightening discolored stainless steel by removing calcified mineral stains.
- They must be used with caution as they can attack certain resilient objects in the brewing system, such as gaskets or valve seats, causing premature degradation or failure.
Sanitizer/Disinfectant
- Relatively cheap to use.
- Disinfecting and rinsing soils that are prone to bacterial growth is very effective.
- May be harmful to stainless steel, causing staining, corrosion, and pitting.
- It can cause some serious environmental problems by killing important microorganisms in streams and waterways and dissolving them in wastewater streams.
- Has stronger oxidizing power than bleach.
- Less corrosive to brewery equipment.
- Less harmful to the environment.
- A powerful disinfectant even at low temperatures.
- After rinsing, there may be little or no chlorine residue left to corrode stainless steel.
- Effective against all microorganisms, including spoilage organisms, pathogens, and bacterial spores.
- Also proven to be more environmentally friendly in wastewater streams.
- Peracetic acid has a strong, pungent odor, so it should only be used in well-ventilated areas.
Sterilizer
CIP system cleaning steps
| CIP cycle step | Purpose | Cleaning agent | Challenges |
|---|---|---|---|
| 1. Pre-rinse | Remove the majority of particles, organic material before cleaning the agent. | Water. | High water demand, wastewater loads. |
| 2. Caustic or acid cleaning | Clean organic material and particles which have adhered to internal surfaces. Acid cleaning may also remove inorganic particles to avoid scaling. Remove surfaces that enhance microbial growth. | Sodium or potassium hydroxide, various acids. | Chemical handling is costly. |
| 3. Rinse | Rinse away caustic or acid in order to avoid product contamination. | Water. | High water demand, wastewater loads. |
| 4. Sanitation & disinfection | Ensure microbial (bacteria, viruses, algae) free process equipment. Even a few microbes may cause infections in the final product. | Chlorine-based agents, peracetic acid (PAA), hot water, steam, iodophors. | Ensuring complete removal of bacteria. High costs. |
| 5. Final rinse | Rinse away sanitation chemicals to avoid contamination of brew. | Water. | Adds time and water consumption to the CIP cycle. |
Additional Tips When Using Chemicals
- Increasing the temperature of the cleaning solution will increase its decontamination efficiency. The extra capacity required to heat the solution increases the cost of the CIP cycle process, but hot molecules with high kinetic energy remove soil faster than slower-moving molecules in cold solutions.
- Concentrated cleaning solutions can clean more dirty equipment surfaces than dilute solutions. More chemicals mean more money, but higher concentrations increase surface binding capacity, resulting in better and faster cleaning.
- The cleaning effect of the detergent for a long time is better than that of the contact for a short time. More cleaning time means less time to produce a profitable product, but over time, chemicals dissolve hard dirt from surfaces.
- Chemical solutions will gradually lose strength over time. Check the concentration of wash solutions daily and adjust and replace them as needed.
How to Calculate the Right Cleaning Temperature
We all know that higher solution temperatures can increase the effectiveness of chemical and mechanical action, and can also reduce the time required for proper cleaning. But given the energy cost of heating the solution, the temperature of each cleaning stage needs to be calculated and controlled as accurately as possible. Each stage of the cleaning process has its optimal temperature range to balance effective cleaning with energy savings.
| CIP cycle stage | Approximate temperature range |
|---|---|
| Pre-rinse | 104~140℉ |
| Alkaline washing | 140~185℉ |
| Intermediate flush | Ambient temperature ~140℉ |
| Pickling | 130~150℉ |
| Final rinse | Ambient temperature |
| Disinfectant | Ambient temperature |
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Beer Brewery Equipment Manufacturer The brewing supplies provided by Micet Craft can support your brewing needs from small batches of micro beer brewing equipment to 100 barrels capacity. Micet Craft has reached cooperation with many breweries around the world, we can design and manufacture professional brewing systems for breweries, including cellar beer brewing equipment and other
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Best brewhouse equipment manufacturer from china Brewing good beer requires brewhouse equipment. Whether you are brewing beer for home, business or brewery, Micet Craft can provide a turnkey solution according to the daily output you need. We have brewhouse equipment with 2 vessels, 3 vessels and 4 vessels, the unique design allows you to do decoction
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