Industrial refrigeration.
The 7 steps of the CO2 recovery process and industrial utilization using the CARBOKEG method for refrigeration.
1. CAPTURE OF
NON-BIOGENIC CO2
CO2 is captured directly from the gas output of plants. The process can occur in three different ways: post-combustion, pre-combustion, and oxy-fuel combustion.
2. CO2
SEPARATION
In a pre-treatment unit, the gas is cooled and components such as sulfur oxides, hydrofluoric acid, hydrochloric acid, and dust are removed. Then, the gas is compressed and dried before entering the cryogenic purification unit. The CO2 then undergoes partial condensation and distillation techniques that remove heavy compounds, such as residual nitrogen oxides, and light elements, such as oxygen, argon, nitrogen, and carbon monoxide.
3. STORAGE
OF CO2
CO2 is compressed, cooled, liquefied, and stored in tanks at very high pressures. Then, in its liquid phase, it is stored in cryogenic tanks ready for use in the production of dry ice for cleaning and refrigeration.
5. DRY ICE BLASTING
USE OF DRY ICE FOR BLASTING IN CRYOGENIC CLEANING PROCESSES
Dry ice blasting can be used for cleaning various sectors, equipment, and industrial machinery. The process occurs at high speeds, where CO2 particles are used as the impact agent, accelerated via compressed air.
6. INDUSTRIAL REFRIGERATION
The use of refrigeration systems such as gas compressors or ammonia-based heat exchangers can be replaced by the use of dry ice as a cooling source. Carbon dioxide as a refrigerant gas at viable pressures can be adapted to existing conventional heat exchange systems.
7. CO2 RECOVERY
After the heat exchange cycle in cooling, the carbon dioxide returns to its liquid form for storage in the tanks again.
