CIP-cleaning in the food processing industry
CIP-cleaning facilities are primarily used in those installations wherever supreme necessities are demanded for hygiene and product safety, such as dairies, breweries and in food production. Throughout this process the complete production facility, including tanks and conducts, are purged and rinsed with cleaning agents and water in several cycles. The aim of Cleaning-in-Place (CIP) is to remove product residues and microorganisms from all wetted surfaces inside tanks, pipework and filling machines while not disassembling the plant. To warrant optimum and economical cleaning, all parts in direct contact with the product must be made according to the principles of hygienic design. Anderson-Negele’s motto “Hygienic by Design” is an expression of commitment that sensors fulfill this superior demand of the food processing industry in an exemplary manner.
Sequences of a CIP-cleaning within the example of a dairy
The CIP cleaning process takes place in several coordinated process steps. In the first step remains of the product in the installation are extruded and adhering particles removed in the pre-rinsing process. In the next steps, organic traces are eliminated with caustic and mineral deposits by use of acid. Subsequently, the facility is rinsed with fresh water and thus prepared for the next production step.
- Pre-rinsing (water)
- Cleaning (caustic)
- Mid-cycle rinse (water)
- Cleaning (acid)
- Rinsing (freshwater)
Optimization of the CIP Process
A CIP cleaning process in commonplace applications lasts between 60 and 90 minutes. The operator of a production facility consequently suffers from downtime in production capacity leading to a loss of products, and from increased cost for the consumption of water, energy and chemicals.
The hygienic design of the complete production facility and automatized processes are key factors for a reduction of the cleaning cycle times and for an increase in the efficiency and productivity of the process itself. Being an experienced specialist for sensor technology in hygienic environments, the sensors and process connections from Anderson-Negele are perfectly adapted to the requirements of the food industry and ensure the safe and economical cleaning of the facility and installations.
Why Morton Controls together with Anderson-Negele’s ILM-4 could help you
The analysis of the return media is one of the most important steps for an environmentally friendly and cost-efficient process. The ILM-4 inductive conductivity meter plays a central role in precisely determining the phase separation: during the discharge of the liquids at each cleaning stage the media are differentiated with cost-saving accuracy. Re-usable cleaning agent that flows off after cleaning can thus be returned to the tank to the maximum possible degree. In a separate, internal circulation and for permanent optimum cleaning result, its concentration is adapted to the specified ideal value by re-dosing with detergent and fresh water in the cleaning agent tank. The ILM-4 conductivity meter also ensures the highly precise measurement of conductivity and temperature required here.
Inductive Conductivity Meter ILM-4
The ILM-4 is designed for hygienic applications in food-, beverage- and pharmaceutical industries and controlling of CIP processes (e. g. phase separation detergents/water). The ILM-4 is currently equipped with the IO-Link in parallel. IO-Link offers important benefits over analog technology when it comes to reliably controlling the entire process technology with a variety of measuring points, control and operating elements.
- CIP/SIP cleaning up to 150 °C/maximum 60 minutes
- Wear-free, inductive measurement
- In contrast to conductive measurement procedures, no problems with electrode deterioration or polarization.
- Accurate measurement through compensation of temperature influences.
- High reproducibility of ≤ 1 % of the measurement value.
- Analog outputs for conductivity and temperature are a standard feature.
- Analog outputs for conductivity, temperature or concentration are freely adjustable.
- Rapid temperature response time T90 15…60 s
- Installation in tube diameters from DN 40