What Is a Clean-in-Place System?
A Clean-in-Place (CIP) system is an automated or semi-automated cleaning solution designed to clean the internal surfaces of tanks, process vessels, pipelines, pumps, valves, and other processing equipment without disassembly.
During a CIP cycle, water and cleaning solutions are circulated through the process equipment under controlled conditions. The main cleaning parameters include flow, temperature, chemical concentration, and cleaning time.
A typical CIP program may include a pre-rinse, caustic wash, intermediate rinse, acid wash when required, final rinse, and sanitization.
Industrial CIP systems are widely used in food, beverage, dairy, brewery, pharmaceutical, biotech, and cosmetic processing, where reliable and repeatable cleaning is important for maintaining sanitary production conditions.
Industrial CIP System Configurations
Different production facilities require different CIP configurations. The appropriate system depends on the number of cleaning circuits, equipment layout, production capacity, cleaning requirements, and desired level of automation.
| Configuration | Typical Application |
|---|---|
| Single-Tank CIP | Compact installations and simple cleaning circuits |
| Two-Tank CIP | Separate rinse/recovery and chemical solution handling |
| Three-Tank CIP | Larger plants requiring greater solution recovery and cleaning flexibility |
| Mobile CIP Skid | Multiple tanks or production areas requiring portable cleaning |
| Automated CIP System | Plants requiring repeatable recipes, valve sequencing, and process records |
| Multi-Circuit CIP | Facilities cleaning multiple tanks, pipelines, or processing systems |
Unlike standard off-the-shelf cleaning units, ZHONGYILONG CIP systems are engineered around the customer’s production process, equipment layout, cleaning requirements, and automation level.
Solutions can range from compact manual cleaning stations to fully automated multi-tank CIP skids integrated with a complete production line. The objective is to improve cleaning efficiency while helping reduce downtime, water consumption, chemical usage, and operating costs.
ZHONGYILONG systems are manufactured in Houston, Texas, using sanitary stainless steel construction. Depending on the application, the system can include PLC/HMI controls, automated recipe management, conductivity monitoring, temperature recording, and Factory Acceptance Testing (FAT) before shipment.
CIP System Design Capabilities
ZHONGYILONG designs and manufactures industrial CIP systems for sanitary processing applications, from compact single-circuit skids to fully automated multi-circuit systems.
Each system can be configured according to the customer’s process equipment, cleaning requirements, production layout, and available utilities.
Key CIP system capabilities include:
- Single-, two-, and three-tank CIP configurations
- Fixed or mobile CIP skids
- 304 or 316L stainless steel construction
- Steam, electric, or hot-water heating
- Sanitary CIP supply and return pumps
- Static spray balls and rotary spray heads
- Rotary jet cleaning applications
- Automatic chemical dosing and conductivity monitoring
- Flow, pressure, temperature, and level instrumentation
- PLC/HMI automation and recipe-based cleaning sequences
- Automatic valve sequencing and process interlocks
- Multiple cleaning circuits and solution recovery options
- Cleaning cycle monitoring and data logging
- Integration with tanks, process piping, pasteurizers, mixers, and other sanitary equipment
- Factory Acceptance Testing (FAT), startup, and commissioning support
ZHONGYILONG can supply the CIP skid, sanitary piping, instrumentation, controls, and process integration as one engineered system.
How We Size an Industrial CIP System
Proper CIP system sizing involves more than determining the required tank volume. The complete cleaning circuit must be evaluated to determine the appropriate flow, pressure, tank capacity, heating capacity, and automation requirements.
Key design factors include:
Equipment and Piping
Tank size and geometry, pipe diameter and length, fittings, valves, and elevation all affect CIP system design and cleaning performance.
Flow and Pressure
The system must provide the flow and pressure required by spray balls, rotary spray heads, process piping, and other cleaning devices.
CIP Tank Capacity
Tank capacity depends on the cleaning circuit volume, rinse requirements, chemical solution volume, and the selected solution recovery strategy.
Heating Requirements
Heating capacity is determined by factors such as solution volume, starting temperature, target temperature, required heat-up time, and available utilities such as steam, electric power, or hot water.
Cleaning Chemistry
The selected cleaning chemistry may include caustic solutions, acids, and sanitizers. Chemical concentration and dosing requirements depend on the product residue and cleaning process.
CIP Circuits
The number of tanks, process lines, and other equipment to be cleaned must be considered. Some facilities require independent circuits, while others may need multiple circuits operating according to a coordinated cleaning schedule.
Automation
CIP operation can range from manual control to fully automated PLC/HMI systems with recipe management, valve sequencing, chemical dosing, alarms, and process monitoring.
Based on these requirements, ZHONGYILONG selects the appropriate CIP configuration, supply and return pumps, tank sizes, heating method, instrumentation, and control system for each application.
Typical CIP Cleaning Cycle
An industrial Clean-in-Place cycle uses a controlled sequence of rinsing, chemical cleaning, and sanitization steps to remove product residue and prepare processing equipment for the next production cycle.
The exact cleaning sequence depends on the product, equipment design, sanitary requirements, cleaning chemistry, and operating conditions.
A typical CIP cycle may include the following stages.
1. Pre-Rinse
Water is circulated through tanks, process equipment, and piping to remove loose product residue before chemical cleaning begins.
An effective pre-rinse can reduce the amount of contamination entering the chemical wash solution and may help extend the usable life of the cleaning solution.
2. Caustic Wash
A heated alkaline cleaning solution is circulated through the CIP circuit to remove fats, oils, proteins, sugars, and other organic residues.
The required chemical concentration, temperature, circulation time, flow, and pressure depend on the product being removed and the equipment being cleaned.
In automated CIP systems, temperature and conductivity can be monitored continuously to help maintain the required cleaning conditions.
3. Intermediate Rinse
Water is circulated through the system to remove residual alkaline cleaning solution before the next cleaning stage.
Conductivity monitoring can help determine when the chemical concentration has fallen sufficiently to proceed to the next stage.
4. Acid Wash — When Required
An acid cleaning cycle may be used periodically or as part of a standard cleaning program to remove mineral deposits, scale, and other inorganic residues.
Whether an acid wash is necessary, and how often it should be performed, depends on factors such as the process, water quality, product characteristics, and sanitation requirements.
5. Final Rinse
Clean water is circulated through the system to remove remaining cleaning chemicals.
The rinse continues until the required endpoint is reached. Depending on the system design, automated CIP equipment may use conductivity, time, temperature, or other process conditions to determine when the rinse is complete.
6. Sanitization
When required by the process, a sanitization step is performed after cleaning to reduce microorganisms before production resumes.
The appropriate sanitizer, concentration, contact time, and temperature depend on the specific process requirements and the chemical manufacturer’s recommendations.
The Four Key Factors in Effective CIP Cleaning
Effective CIP cleaning depends on balancing four fundamental factors:
- Time
- Temperature
- Chemical action
- Mechanical action
Proper flow and pressure provide the mechanical action required to clean process piping and operate tank spray devices effectively.
In automated CIP systems, PLC/HMI controls can manage cleaning recipes, valve sequencing, pumps, temperature, chemical dosing, conductivity, and alarms. This helps improve cleaning consistency and repeatability.
Important: CIP temperatures, chemical concentrations, cleaning times, and sanitization requirements should be established for the specific product, equipment, cleaning chemistry, and applicable sanitary requirements.
Why Choose ZHONGYILONG Industrial CIP Systems?
ZHONGYILONG designs and manufactures industrial CIP systems around each customer’s process, equipment, cleaning requirements, and facility utilities.
From engineering and fabrication to automation, testing, and commissioning, the company provides integrated CIP solutions for sanitary processing applications.
Custom Engineered for Your Process
Rather than relying on a one-size-fits-all approach, ZHONGYILONG designs each CIP system around the customer’s tanks, process piping, cleaning circuits, utilities, and sanitation requirements.
Solutions can range from compact mobile CIP skids to fully automated multi-tank systems.
Complete Process Integration
ZHONGYILONG also provides mixing tanks, process vessels, pasteurizers, pumps, piping systems, and control panels.
This allows the CIP system to be integrated with the wider production process and designed around the equipment it will serve.
In-House Automation and Controls
PLC/HMI-controlled CIP systems can include automated cleaning recipes, valve sequencing, temperature and conductivity monitoring, chemical dosing, alarms, and data logging.
These functions help operators achieve more consistent and repeatable cleaning cycles.
Factory Testing and Engineering Support
CIP systems can undergo Factory Acceptance Testing (FAT) before shipment to verify mechanical operation, instrumentation, controls, and cleaning sequences.
ZHONGYILONG’s Houston-based engineering team also provides support for installation, startup, commissioning, training, and after-sales service.
Summary
An industrial CIP system provides a controlled method for cleaning tanks, pipelines, pumps, valves, and other sanitary processing equipment without disassembly.
The right system configuration depends on the production process, equipment layout, cleaning circuits, utilities, cleaning chemistry, and required automation level.
From single-tank and mobile CIP systems to automated multi-circuit solutions, ZHONGYILONG provides engineered CIP equipment designed for food, beverage, dairy, brewery, pharmaceutical, and other sanitary processing applications.
For a suitable CIP configuration, system capacity, and cleaning cycle, the design should be developed according to the specific process equipment and production requirements.
Frequently Asked Questions About Industrial CIP Systems
What is an industrial CIP system?
An industrial CIP system is a cleaning system that circulates water and cleaning solutions through tanks, pipelines, pumps, valves, and other process equipment without requiring the equipment to be disassembled.
What industries use CIP systems?
CIP systems are commonly used in food, beverage, dairy, brewery, pharmaceutical, biotech, and cosmetic processing where sanitary and repeatable cleaning is required.
What are the main stages of a CIP cleaning cycle?
A typical cycle may include pre-rinse, caustic wash, intermediate rinse, acid wash when required, final rinse, and sanitization.
How is a CIP system sized?
CIP sizing considers equipment and piping dimensions, required flow and pressure, CIP tank capacity, heating requirements, cleaning chemistry, number of cleaning circuits, and automation requirements.
Does every CIP system require an acid wash?
No. The need for an acid wash depends on the product, water quality, mineral deposits, equipment, cleaning chemistry, and applicable sanitation requirements.
Can a CIP system be fully automated?
Yes. Depending on the application, an automated CIP system can use PLC/HMI controls for cleaning recipes, valve sequencing, chemical dosing, temperature and conductivity monitoring, alarms, and process data logging.
Can CIP equipment be integrated with an existing production line?
Yes. A CIP system can be designed to integrate with tanks, process piping, pasteurizers, mixers, pumps, and other sanitary processing equipment.
What materials are used for industrial CIP systems?
Sanitary CIP systems can be manufactured using stainless steel such as 304 or 316L, depending on the process, cleaning chemistry, and application requirements.
Can ZHONGYILONG provide CIP commissioning support?
Yes. CIP projects can include engineering support, Factory Acceptance Testing, startup, commissioning, operator training, and after-sales support.
Inquiry
If you are planning a new beverage, food, dairy, brewery, or other sanitary processing facility, ZHONGYILONG can develop a CIP solution according to your equipment, production capacity, cleaning circuits, utilities, and automation requirements.
Contact ZHONGYILONG to discuss your CIP application and receive a customized system prop
