Petrochemical industry
Petrochemical industry
Target equipment
Tanks
Electric generators and electric motors
Coils
Oil processing
Description of usage
The use of dry ice cleaning can improve the environmental friendliness and efficiency of repair and maintenance service of industrial equipment in the petrochemical industry. Dry ice cleaning is similar to sandblasting, but uses carbon dioxide in the form of solid particles as a consumable cleaning material. Soft and non-abrasive dry ice particles do not
damage the surface, so it can be used for cleaning precision components and equipment, such as electronics, mechanical transmissions, hard-to-reach components, seals, where cleaning with water, abrasives or chemicals is not allowed.
Using cryogenic blasting, you can perform:
cleaning of all power equipment (stator and rotor of turbogenerators, blades and diaphragms of the low-pressure steam turbine unit, live electrical panel components, transformer housing and insulators, gas and air cooler grids, surfaces of collapsible plate heat exchangers) directly in the shop, without chemicals and water, with the effect of degreasing, without damage;
cleaning of production equipment (conveyors, molds, molds, robots, furnaces, walls, floor and ceiling of the room) that is constantly polluted with dust and product residues;
Equipment that can be cleaned by dry ice:
- Reactor screens
- Tube bundles of the lateral shells
- Cleaning of internal and external walls of industrial premises
- Packaging service station
- Oil pumps
- Engines of oil pumping units
- Air coolers
- The removal of sulfur
- Preparation of surface vessels
- Stackers
- Rotary equipment
- Heat transfer equipment
- Gas pumping unit compressors
- Turbines of gas pumping units
Cryoblasting advantages
- Reduced downtime for equipment and production
- Increased productivity (reduced cleaning time)
- Effective removal of bacteria (mold, Listeria, Salmonella).
- Degreasing of the surface
- No abrasive that can harm workers and equipment
- Improving the level of occupational safety in the workplace (reducing additional payments for harm and increasing the length of the working week)
- Improving the safety of storage and transportation of cleaning products (reducing surcharges for harm and increasing the length of the working week)
- Reducing the burden on the environment
- Reduction of production losses due to an accident
- Receive discounts on insurance rates in the social insurance Fund against industrial accidents and occupational diseases
- Reducing economic losses due to staff turnover
Cleaning Effect
Mechanical impact of pellets
Pellets, accelerated in the air stream, gaining speed up to 300m/s and hit the dirt removing it
Thermal shock
When in contact with the contamination, the granule transmits a temperature of -79°C, which makes the contamination brittle, easier to break down and peel off
Sharp expansion
Dry ice particles are heated when they hit the pollution, as the kinetic energy of the movement turns into heat, after which the particles instantly turn into CO2 gas, expanding in volume by 700 times. This expansion is similar to a gas wedge that exfoliates the contamination.
Properties of dry ice
Comparison with traditional cleaning methods
Chemical cleaning
Significant time is required for complete or partial disassembly and installation, transportation to the site cleaning, requires the involvement of loading equipment and additional personnel, which leads to increasing the time and complexity of cleaning activities
Chemicals and solvents are dangerous to humans
Chemistry can damage the seals, isolation and others materials
Chemical residues can cause corrosion of metal components of equipment
Use of solvents is flammable and explosive
It is necessary to dispose of chemical waste after cleaning (up to 1 l / sq.metre)
Water jet cleaning
Significant time is required for complete or partial disassembly and installation, transportation to the site cleaning, requires the involvement of loading equipment and additional personnel, which leads to increasing the time and complexity of cleaning activities
It takes time to purge and dry the equipment from the remaining water
Risk of electric shock when working near electrical equipment
The water jet can damage the seals and soft materials of the equipment
Water residues can cause corrosion of metal components of the equipment
It is necessary to clean and dispose of dirty water after cleaning (60-200 l / sq.metre)
Abrasive blasting
Significant time is required for complete or partial disassembly and installation, transportation to the site cleaning, requires the involvement of loading equipment and additional personnel, which leads to increasing the time and complexity of cleaning activities
It takes time to purge and dry the equipment from the remaining abrasive particles
Danger of abrasive settling in in the lungs
Abrasive damages the surface of the equipment
Risk of abrasive particles getting into hard-to-reach areas of the equipment, which may cause it to malfunction
It is necessary to clean and dispose of the abrasive after cleaning (30-100 kg / sq.metre)
Dry ice blasting
Dry ice disappears immediately after cleaning
Dry ice is not a fire hazard
Dry ice is not explosive
Dry ice does not conduct electricity
Quick preparation before cleaning
It is possible to clean without stopping the process line
Minimum post-cleaning time after processing
Degreases and disinfects the surface
Виды загрязнений VS давление воздуха
Light contaminants
- Engine oil deposits
- Fat deposits
- Fresh rust
- Liquid engine oil
- Mold and biodegradation
- Assembly foam
- Porous thermal insulation
- Dust and fluff
- Household dirt
Average contaminants
- Persistent engine oils
- Fresh rust
- Liquid mineral oils
- Lubricating grease
- Fresh glue
- Porous thermal insulation
- Paint on the wood
- Wood cleaning
- Soot
Hard contaminants
- Bitumen
- Dried glue
- Old rust
- Paint 400 µm
- Carbon
Supersonic nozzles are required