Small reactors are common reaction equipment in the chemical and pharmaceutical industries, and internal dirt accumulation is inevitable. Types of dirt typically include scale, reactant residue, chemical precipitates, grease, and resins. Regular cleaning is crucial to ensure proper operation, improve reaction efficiency, and extend equipment life. However, due to their small size, manual cleaning is difficult. Therefore, we recommend an automatic cleaning machine for reactors around 500L.
The 40L/min, 100bar automatic cleaning machine for small reactors is designed for use in laboratories, pilot plants, or small production lines. Its core function is to automatically and thoroughly clean residual materials from reactor walls using high-pressure water, ensuring both efficiency and equipment protection.
I. Core Parameters
1. Pressure (100bar)
100bar (approximately 10MPa) falls within the medium-to-high pressure range and represents the "golden pressure range" for cleaning small reactors.
- Cleaning Capacity: It is sufficient to remove common viscous material residues (such as resins, adhesives, and food slurries) and light scale (such as inorganic salt deposits and thin organic polymer layers) from reactor walls, without damaging common reactor materials such as stainless steel and enamel.
- Compatibility: It avoids the problems of incomplete cleaning at low pressures (<50bar) and potential scratches and sealing surface damage at high pressures (>200bar). It is particularly suitable for small reactors with a volume of ≤500L.
2. Flow Rate (40 L/min)
A flow rate of 40 L/min and a pressure of 100 bar are a perfect match:
- Flushing Efficiency: The flow rate determines the amount of flushing water per unit time. A 40 L/min system quickly removes residual material removed by high pressure, preventing secondary stain adhesion. The cleaning time for a single small reactor (e.g., 100 L) can typically be controlled within 10-30 minutes.
II. Core Equipment Components
The automation and cleaning performance of a small reactor automatic cleaning machine depend on the following key components:
1. High-Pressure Pump Unit: Serving as the core power source, this unit typically uses a plunger pump (wear-resistant and stable pressure). Driven by a motor, it pressurizes atmospheric water to 100 bar, acting as the "output source" for both pressure and flow. 2. Automatic Cleaning Actuator:
- The mainstream is a rotating cleaning nozzle (such as a 360° rotating ball nozzle or a multi-nozzle cleaning arm), which extends into the reactor through the reactor opening. The nozzle speed (usually 100-300 rpm) is linked to the water flow pressure to achieve comprehensive coverage of the reactor walls, bottom, and agitator.
- Some units are equipped with a telescopic mechanism to accommodate reactors of varying depths (e.g., 0.5-2 m).
3. Control System:
- Basic Functions: Preset cleaning time (adjustable from 1 to 60 minutes), pressure/flow monitoring, and abnormality alarms (such as insufficient pressure or water flow interruption).
- Advanced Functions: PLC programmable control supports automatic switching between the multi-stage process of "pre-rinse-high-pressure cleaning-clear water rinse." Some units can be integrated with the workshop's MES system for data traceability.
4. Auxiliary Systems: Includes an inlet water filter to prevent impurities from clogging the nozzle, a water tank (included on some models), and a drainage recovery port for centralized wastewater treatment.
III. Application Scenarios and Cleaning Advantages
1. Typical Application Industries
Fine Chemicals: Cleaning of residual catalysts, intermediates, and viscous resins after synthesis reactions.
Pharmaceuticals: Cleaning of pharmaceutical excipients (such as starch and cellulose) and API reactors to meet GMP cleanliness requirements.
Food Processing: Cleaning of reactors for food ingredients such as sauces, fillings, and beverages to prevent cross-contamination.
Laboratory/Pilot Plant: Suitable for small glass and stainless steel reactors, replacing manual cleaning and improving experimental efficiency.
2. Core Cleaning Advantages
Automation and Labor Savings: No need to manually reach into the reactor to clean; simply connect the pipes and set the parameters for automatic operation. This is particularly suitable for small equipment with narrow reactor openings that are difficult to clean manually.
Cleans without blind spots: The water flow from the rotating nozzle reaches traditionally blind spots such as the curved surface of the reactor, the agitator shaft, and the base of the impeller blades, achieving a cleanliness level exceeding 98%.
Protecting Equipment Life: The medium- and high-pressure water flow is a "flexible cleaning" method that eliminates mechanical friction, reducing wear on the reactor and extending the service life of the reactor seals and agitation system. Environmental Protection and Waste Reduction: Compared to the traditional "manual cleaning + cleaning agent" method, this system can reduce chemical cleaning agent usage by over 90%. Cleaning can be completed with only water, reducing waste liquid disposal costs.
IV. Selection and Usage Considerations
1. Key Selection Dimensions
Reactor Material: For enameled reactors, it is recommended to choose an adjustable pressure model (with a lower limit of 50 bar) to prevent enamel cracking caused by high-pressure shock. Stainless steel reactors can be directly adapted to the 100-bar standard model.
Reactor Inner Diameter and Depth: The maximum coverage diameter (typically 100-500mm) and telescopic length of the cleaning nozzle must be matched to ensure the nozzle can fully extend to the bottom of the reactor.
Residue Material Characteristics: For high-hardness scale residues (such as high-temperature carbonized materials), select a model with a pulse function to enhance the removal effect through pressure pulses. For flammable and explosive residues (such as solvent-based materials), select an explosion-proof model (with motor and circuitry meeting Ex d IIB T4 explosion-proof rating).
2. Safety and Maintenance
Safety precautions: Before starting the machine, check the tightness of pipe connections to avoid injury from high-pressure water jets. The equipment must be grounded to prevent electrical failure.
Regular maintenance: Clean the water inlet filter weekly, check the high-pressure pump lubricant level monthly, and disassemble and clean the nozzle quarterly to prevent impurities from clogging the nozzle and causing a sudden increase in pressure.
Wastewater disposal: Wastewater after cleaning must be piped to a wastewater treatment system through dedicated piping and must not be discharged directly (especially in the chemical and pharmaceutical industries).
