Environmental Engineering and Consulting

Environmental engineering

  • ㆍ We aim for investment/cost efficiency by providing optimization engineering that can properly handle environmental pollutants such acid gas, toxic gas, flammable gas, and organic volatile substances generated in the process of hazardous gas treatment facilities and hazardous chemical handling facilities
  • ㆍ Establish and provide measures to prevent and minimize the emissions of environmental pollutants such as wastewater and air emission pollutants
  • ㆍ Provide engineering services to maximize economic performance, such as converting waste resources like biomass, combustible waste, organic waste, and biogas into energy such as electricity and steam, and building energy resource conversion facilities that convert to renewable energy sources

Environmental consulting

  • ㆍ Provide environment-related investigation/analysis/diagnosis/consultation/information and education service
  • ㆍ Propose solutions and alternatives to reduce environmental costs and environmental problems to companies and industries

1. Steam and cogeneration plant using waste resources (waste, SRF, Bio-SRF)

  • (1) design/manufacturing/supply, (2) operation, (3) business development
  • (4) Main equipment specifications

2. High salt wastewater treatment facility (plant) design/manufacturing/supply and operation

  • (1) Detailed capacity design
  • (2) Detailed design diagrams

3-1. Development and manufacture/sale of chemical materials using waste resources (shells, egg shells, etc.)

3-2. Development and production/supply of biogas separation system (gas separation membrane system)

3-3. Methane (energy) recovery from biogas and CO2 resource/greenhouse gas

  • (1) Calcium carbonate compositing technology
  • ㆍ It is a composite of CaCO3 with chemical formula of CaCO3. It is divided into ground calcium carbonate (GCC) made by grinding limestone directly and precipitated calcium carbonate PCC made through a chemical method
  • ㆍ This composite is a high value-added raw material used in various industries such as paper, plastic, rubber, and paint
  • (2) Detailed volume design
  • ㆍ Technology uses less energy than other separation technologies because it does not require energy for phase change
  • ㆍ Possible Room temperature operation / possible thermally unstable substance separation
  • ㆍ Device can be compacted due to system simplicity and integration
  • ㆍ Depending on the combination of membrane modules, it is easy to respond to operating loads and scale up
  • (3) Seawater desalination plant technology
  • ㆍ Design/manufacture equipment that produces fresh water by removing salts such as NaCl from seawater using the hydrate principle
  • ㆍ Principle: When wastewater reacts with guest gas to form hydrate In case of valuable metal ions, due to the size of ions and the effect of electrostatic attraction, metal ions are not included in the hydrate during hydrate formation, so they can be separated from other wastewater and can be easily recovered.

4. Design/develop a boiler exclusively for syngas generated from waste oxygen gasifier

  • ㆍ Derive an independent model through pilot-scale operation characteristic analysis
  • ㆍ 100 ton/first class commercial scale gasifier exclusive boiler concept design
  • ㆍ Materials suitable for waste syngas
  • ㆍ Prevent inflow of outside air (cleaning port, redistribution port, etc.)
  • ㆍ In case of emergency stop, steam explosion and syngas explosion prevention system
  • ㆍEvaluate pilot scale syngas boiler production/installation/performance
  • ㆍ Detailed design of boiler for commercial scale gasifier
  • ㆍ Evaluate and improve the performance of commercial-scale syngas-only boilers
  • ㆍ Develop high-efficiency syngas-only boilers rather than technology introduction based on the above results

Simulation result

  • ㆍ The results were exhibited in Kelvin temperature (K, absolute temperature)
  • ㆍ T(K) = 273 + C(℃)

Case 1

  • ㆍ Condition of open air : -20℃, no wind
  • ㆍ Temperature of leading-in gas : 130℃
  • ㆍ Duct and main body of dust collector not kept warm
  • ㆍ Almost no change in temperature of dust collector surface and duct surface due to low heat conduction in no wind condition

Case 2

  • ㆍ Condition of open air: -20℃, Wind speed (2m/s)
  • ㆍ Temperature of leading-in gas : 130℃
  • ㆍ Duct and main body of dust collector not kept warm
  • ㆍ Temperature of dust collector surface and duct surface falls due to open air since heat conduction is high in wind

Case 3

  • ㆍ Condition of open air: -1.8℃, Wind speed(2.2m/s)
  • ㆍ Temperature of leading-in gas: 130℃
  • ㆍ Duct and main body of dust collector not kept warm
  • ㆍ Temperature fall of dust collector surface and duct surface considerably low due to low temperature of open air compared to Case 2

Case 4

  • ㆍ Condition of open air: -1.8℃, Wind speed(2.2m/s)
  • ㆍ Temperature of leading-in gas: 140℃
  • ㆍ Duct and main body of dust collector kept warm : Mineral Wool
  • ㆍ Temperature of dust collector and duct surface barely affected by open air due to excellent heat reservance of mineral wool

5. Technology for thermal treatment and detoxification of waste refrigerants (HFCs)

  • ㆍ Thermal destruction in high-temperature combustor of waste refrigerant input from storage tank
  • ㆍ Produce fluorite by reaction with slaked lime after removing hydrogen fluoride in flue gas from the scrubber
  • ㆍ When hydrogen fluoride is sufficiently removed from the furnace exit with aluminum oxide as a dry reactant, steam and fluorite are produced by applying a boiler
  • (1) Process

Refrigerant Recovery Machine

Refrigerant separation/refining equipment (recycling)

Refrigerant Thermal Destruction Equipment (Disposal)

  • (2) Thermal destruction
  • Device name: Combustor dedicated to waste refrigerant in dual structure swirl flow method
  • (3) combustor
  • (4) Refining/regeneration
  • ㆍ Fractional Liquefaction
    • – Technology that separates mixed refrigerants with different liquefaction points (boiling points) in stages
    • – Low energy consumption due to the reverse process of fractional distillation widely used in crude oil refining
    • – Most widely used as refrigerant regeneration technology
  • ㆍ Gas Membrane Separation
    • – The technology to separate membrane material and gas molecules via their difference in penetration speed caused by physiochemical interaction
    • – Utilize gaseous refrigerant pressure as the driving force for selective separation of mixed gas (refrigerant)
    • – High processing capacity per unit volume when a hollow fiber type membrane is applied
    • – Compared to the fractionation liquefaction technology, additional research is required for commercialization as a research-stage technology (materials, large-capacity, etc.)

6. Feasibility analysis of organic sludge drying process using flue gas

  • ㆍ Part of the flue gas generated from the incinerator is utilized as a heat source for drying sludge to expand the business area according to the sale of dried sludge

7. Research and development consulting and agency business for SMEs

  • ㆍ Implement clean production guidance to implement environmental improvement measures with the goal of complying with legal safety standards, protecting the environment, and reducing costs
  • ㆍ Combined support for companies such as clean production, environmental management, eco-friendly design, and product environmental regulations response