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Kurimoto Chemical Engineering & Machinery Group Solvent Recovery System

Product Made in Japan

Manufacturer: KURIMOTO

The Kurimoto Solvent Recovery System is a fixed bed type of flue gas treatment equipment using granulated active carbon, which has been developed for the purpose of recovering organic solvent contained in the flue gas. By passing the solvent-containing gas through the granulated active carbon layer, the solvent is adsorbed to the active carbon to exhaust clean air. By blowing vapor into the active carbon layer after the solvent is adsorbed, the solvent is isolated from the active carbon, and recovered after condensation and separation. 

Features

Providing a high degree of elimination efficiency.

Supporting for large changes in inlet concentration.

Trouble-free operation.

A large amount of know-how and extensive experience.

Enabling treatment in the range from small capacity to large capacity.

Less running costs, compared to other solvent recovery systems.

Application

Chlorine base organic solvent

  • Solvent and monomer generated from solution polymerization lines.
  • Industrial cleaning agent such as methylene chloride, trichloroethylene, and tetrachloroethylene

Chlorofluorocarbon base solvent

  • Heat insulation chlorofluorocarbon (CFC-11and HCFC-141b)
  • CFC-113

Hydrocarbon base organic solvent

  • Non water base
    Benzene, toluene, xylene, styrene, naphtha, kerosene, heptane, and others
  • Water base
    Methanol, ethanol, acetone, methyl ethyl ketone, propanol, methyl acetate, ethyl acetate, butyl acetate, and others

Operating Process

The Kurimoto Solvent Recovery System enables the elimination and recovery of solvent contained in flue gas by performing the following processes in order of “Adsorption”, “Isolation”, and “Drying”. By using two active carbon adsorption towers, the continuous treatment of flue gas is enabled.

The solvent-containing gas is sucked by the blower. When the gas passes through the granulated active carbon layer, the solvent is adsorbed to the active carbon, where it turns into clean air to be exhausted.

Steam is blown into the adsorption tower from its bottom to purge the solvent adsorbed to the active carbon. The isolated solvent vapor passes through the condenser where it is liquefied, and it is recovered by gravity separation through the separator.

The active carbon, which has got wet in the isolation process, is dried by hot air generated through the steam air heater and, then, cooled by air of ambient temperature.

Specification

Type Treatment air quantity (m3/min) Dimensions (diameter×height)(mm) Model SA/Estimated weight (kg)
650 7 600×1800 260
860 15 800×2200 440
960 20 950×2400 640
1160 30 1100×2500 820
1470 50 1400×2950 1600
1880 80 1800×4000 3050
2000 100 2000×4500 3400
2300 130 2300×4500 4100
2500 150 2500×4500 4600
2800 190 2800×4500 5500
3000 200 3000×4500 7000

 

1. The Kurimoto Solvent Recovery System is of unit type. Therefore, the system can support for applications requiring high concentration and large air quantity in accordance with the combination.
2. Each type has the following models.
1) Model SA (single tower, automatic control)
2) Model DA (twin towers, automatic control)
3) Model 2BDA (twin blowers, twin towers, automatic control): Supporting for solvent of low boiling point
3. Increased safety explosion-proof type is available on request, which can support for the treatment of flammable solvent.

4. Choice of type

Typical Flow Sheet

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