Automatic in-place cleaning stations KMZ-STsM are made for factories of dairy and beverage industries with different capacities and design features depending on the wishes and preferences of a customer.

The advantages of using CIP station:

  • possibility of multiple use of cleaning solutions;
  • possibility to collect rinse water;
  • maintenance of predetermined concentration, temperature of cleaning solutions as well as processing time in the automatic mode;
  • built-in function of cleaning solutions guidance;
  • automatic and manual modes;
  • individual cleaning programs for different objects;
  • feedback from objects of cleaning;
  • possibility of modernization - adding additional circuits and cleaning options;
  • neutralization of cleaning solutions;
  • cost-effective steam consumption by heat recovery system;
  • minimal influence of the human factor;
  • cost-effective consumption of detergents via controlling conductivity at displacing detergents and water from the cleaning circuits;
  • cost-effectiveness (low consumption of water, electricity and steam at high quality cleaning);
  • reliability and easiness of use;
  • complete automation and computer-controlled parameters.

 

Selection and system design are made with reference to the available areas and requirements of the particular production.

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CIP station control system allows flexible and quick adjustment and readjustment routes of cleaning and sanitizing process parameters.

Design modularity allows system readjustment increasing or removing the equipment according to the needs of production.

Material - stainless steel - completely inert and resistant to corrosion.

Centralized in-place automatic cleaning station KMZ-STsM is designed for cleaning and chemical disinfection of the process equipment, process tanks and piping systems in a closed system CIP station.

In accordance with НААСР the scheme is based on the principle of cleaning each object separately. Disinfection of equipment and pipelines can be as hot as well as cold.

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CIP cleaning of a drying plant is available as a separate program after its modernization.

CIP cleaning works by the principle of cleaning solutions circulation according to a determined program depending on the object of cleaning.

An operator can select the required cleaning program from the list with ability to change certain operations or steps.

The control program provides the preparation of detergents and their supply to the objects of cleaning, return of detergents and maintenance of concentration, temperatures in accordance with the set parameters in the automatic mode.

 

As part of any circuit following measurement is provided:

  • outlet and inlet temperature after cleaning;
  • availability of the product on the return;
  • electrical conductivity on the return;
  • consumption of detergents in the feeding line.

 

While developing cleaning program are taken into account the design features in terms of CIP cleaning: construction materials features, gaskets, rubber and plastic elements (to ensure their compatibility with the applicable detergents in order to avoid corrosion or damage), the issues of temperature, pressure and vacuum pressure limit values (evacuation).

There are determined composition and types of equipment to be cleaned, removing contamination nature and detergent suitable for its removing as well as temperature, flow turbulent conditions, the detergent concentration, cleaning duration.

Operations of CIP cleaning.

The cleaning process consists of the operations performed sequentially or their cycles:

  • removal of residual product;
  • pre-rinse;
  • recirculation of cleaning solution;
  • intermediate rinse;
  • repeated recirculation of cleaning solution (if necessary);
  • intermediate rinse;
  • disinfection;
  • final rinse.

 

Removal of residual product means allocating of the product from the system that requires cleaning by removal of the product via special means - compressed air and water under pressure. This stage involves the collection of product residues in a special container or directing them in the drain.

In order to reduce pollution and the volume of waste water, to reduce losses of solids - the residues of the product (so-called rinsings) may be sent from the tank for recycling.

Pre-rinse.

Recycled water with intermediate stage of rinse is used to reduce overall water consumption, the amount of waste water.

Circulation of the cleaning solution.

At this stage the main task of cleaning is carried out: separation of contaminations from the surfaces of the equipment and keeping them in solution in suspension or dissolved state.

Intermediate rinse is used for removing detergent residues along with contaminations and (in the case of partial recovery of cleaning solution) for returning the largest possible amount of detergent (and heat) back into the tank for the diluted cleaning solution, water of drinking quality is used. Water from the stage of intermediate rinse may be recovered and reused for pre-rinse during the following cleaning cycle.

The circulation of the second detergent (when after caustic cleaning the acid cleaning is used) is necessary (if prescribed detergents are not used) if in heat exchangers and other equipment large amount of contamination is accumulated.

Second intermediate rinse is almost always carried out with cold water of drinking quality that is especially important when disinfection stage is absent.

Disinfection is performed at low temperatures using an oxidizing biocidal agent or a solution of the peracetic acid and hot water. For the effectiveness in the systems of CIP cleaning disinfectants should have such features as low foaming and high speed of performance in cold water.

The final rinse – with cold water of drinking quality that is especially important in order to avoid pollution and contamination of the product after disinfection.

Requirements to detergents used in CIP-stations.

Effective detergent must have the following properties:

  • ability to dissolve the organic materials and convert fats and proteins into soluble form;
  • dispersant and suspending capability converting the insoluble contaminations into suspension and preventing their re-deposition on the already cleaned surfaces;
  • emulsifying capacity maintaining fats and oils in the cleaning solution in the form of an emulsion or dispersion;
  • ability for complex formation which ensure the formation of soluble chelates (e.g. with calcium and magnesium contained in hard water) and thus ensure their rinsability;
  • wetting properties reducing the surface tension and providing access of the detergent to the contamination;
  • rinsability - the ability to be removed completely leaving no traces of contamination or detergent residues on the cleaned surface.

 

© Kalinovskiy machine building plant 1934-2017