Used Refrigerant Recovery and Treatment

In accordance with the amendment and enforcement of the Clean Air Conservation Act, owners of refrigerant-using equipment
must either collect the equipment, facilities, and personnel specified in the Clean Air Conservation Act and
recover it directly or entrust it to a company that has a registered refrigerant recovery business.

Sunjin Environment used refrigerant recovery service

Sunjin Environment is the first registered recovery company in Korea, boasting a high recovery rate and fast recovery speed through self-developed recovery machines, and helps simplify the registration and process of complicated documents.

Expert recovery technology

Expert recovery personnel

High-pressure gas transport vehicle

Self-developed recovery machine

Expert recovery technology

Expert recovery personnel

High-pressure gas transport vehicle

Self-developed recovery machine

Sunjin Environment used refrigerant treatment

Sunjin Environment is the only company in Korea that has an one-stop process that can recover, reclaim, and treat used refrigerants all at once, and is the only one with a process that can meet the legal standard for treating refrigerants with a decomposition rate of 99.9% or more.

Reclamation technology

Fractional liquefaction

It is a technology that separates mixed refrigerants with different liquefaction points (boiling points) in stages, utilizing the reverse process technology of fractional distillation widely used in crude oil refining

Gas membrane separation

It is a technology that separates by the difference in the permeation rate due to the physicochemical interaction between the membrane material and the permeating gas molecules, and uses the gaseous refrigerant pressure as a driving force for the selective separation of the mixed gas. In addition, it also utilizes technology with high processing capacity per unit volume by applying a hollow fiber type membrane.


Hydrate refers to a crystal in which gas molecules are trapped in the lattice of water where hydrogen bonds are formed. Hydrate mainly utilizes technology formed in high-pressure and low-temperature environments

Disposal technology

Thermal destruction

Among the 16 ODS (Ozone Depleting Substances) destruction technologies approved by the Montreal Protocol, we have the technology to destroy HFCs at high temperatures using the thermal energy of LNG (city gas).

Comparison with commercial technology

Vehicle-mounted used refrigerant recovery and reclaimed refrigerant charging service

  • – The first door-to-door service in Korea that reuses reclaimed refrigerant using a vehicle that is equipped with used refrigerant recovery and reclaimed refrigerant charging devices. When the vehicle visits the site, it is able to recover used refrigerant from the site and inject reclaimed refrigerant at the same time
  • – To improve the efficiency of used refrigerant recovery and recharging work and to solve accessibility problems, we provide a service that allows remote recovery and recharging of reclaimed refrigerant from a chiller 0~200m apart without getting off the recovery machine that will completely solve the problems of accessibility and increase the processing capacity and processing speed of existing used refrigerant recovery companies.

Service utility

  • Applicable to all workplaces, including large-scale workplaces
  • – No need to install a used refrigerant recovery device at the workplace
  • – Alleviate the burden of workplace investment costs; pay service costs
  • – Can reuse reclaimed refrigerants at workplaces and prevent leakage of used refrigerants
  • – Can increase the efficiency of refrigeration equipment and manage the refrigerant status
  • – Can prevent aging of refrigeration equipment and safety accidents.
  • – Can reduce energy and greenhouse gases.

Service model


Provide vehicle-mounted used refrigerant recovery and reclaimed refrigerant charging service

  • · Possible continuous used refrigerant recovery and reclaimed refrigerant charging at the same time
  • · Possible rapid, large-scale used refrigerant recovery, reclaimed refrigerant charging
  • · Equipped with self-maintenance technology to minimize personnel input


Predict refrigeration facility operation status and refrigerant contamination in real time

  • · Through monitoring of used refrigerant recovery and reclaimed refrigerant charging, reasonable process costs are billed based on the amount recovered and charged
  • · Predict the degree of refrigerant contamination through real-time refrigeration facility monitoring
  • · Provide refrigeration equipment and refrigerant status reporting system


Efficient refrigerant management at the workplace

  • · Check efficiency through real-time refrigeration equipment monitoring
  • · Check efficient replacement cycle of used refrigerant for refrigeration facility