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Thermal desorption plant - capacity 30 T / H, type SDT - 30 buy in Tomesti
Buy Thermal desorption plant - capacity 30 T / H, type SDT - 30
Thermal desorption plant - capacity 30 T / H, type SDT - 30
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statie_de_desorbtie_termica_capacitate_30_th_tip
statie_de_desorbtie_termica_capacitate_30_th_tip
statie_de_desorbtie_termica_capacitate_30_th_tip
statie_de_desorbtie_termica_capacitate_30_th_tip
statie_de_desorbtie_termica_capacitate_30_th_tip
statie_de_desorbtie_termica_capacitate_30_th_tip

Thermal desorption plant - capacity 30 T / H, type SDT - 30

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Technical characteristics
  • BrandTAR
Description

The SDT-30 thermal desorption plant of 30 TPH capacity of treated soil is designed to clean out the polluted soil with hydrocarbons.
     The hydrocarbon contaminated soil that needs to be processed must have the following properties: T.P.H.<5% (total petroleum hydrocarbons), moisture close to 15%, and a maximum grain size of 50mm.

 The high temperature thermal desorption process (HTTD) has the following operations:

• Feeding  the dryer with the solid compound depending on the grain size, moisture and T.P.H.
• Direct fired hydrocarbon desorption at a maximum temperature of 550°C
• Dust separation into a two cyclon group.
• Treated solid soil cooling. 
• Desorbed hydrocarbons oxidation at over 850°C
• Gas cooling under 160°C for filtering.
• Hot gas filtering.
• Treated gas exhaust in the atmosphere with permanent control and registration of the parameters.

The contaminated soil is taken out of the feed bin with an extractor belt and transported into the desorber using helical conveyors. Conveyors speed is equal with the maximum speed of the extractor belt. On the inclined belt there is fixed a magnet separator that stops the metallic parts found in the soil.

On the inclined belt there is fixed a magnet separator that stops the metallic parts found in the soil.

The desorption unit is a rotary dryer designed to resist to working temperatures of 550°C. Inside the unit the polluted materials are heated to 450°C so that the hydrocarbons are exhausted due to volatilization. Hot soil temperature is monitored at the exit of the desorber. On the exit piping of the desorption unit the oxygen and the gas temperature are monitored and depending on these values, the air and fuel capacity is adjusted. Treated soil is exhausted by a helical conveyor, water cooled in the cooling soil system, evacuated with a 10 meters conveyor at 110°C and discharged in truks or a deposit space. 

After desorption resulted gases and vapors containing dust pass through the cyclone group. Collected dust is delivered by the cyclons helical conveyor system into the first third part of the desorption unit.

The gas oxidation chamber is a direct-fired oxidizer that has the advantage of taking over a great variation of VOC concentrations (volatile organic compound) up to 40% of LEL (lower explosion limit).

In the oxidation chamber gases are heated at 850°C and oxidized. Oxidation is influenced by time, temperature and turbulence. The temperature is monitored and adjusted by the variation of the burner output. Time and turbulence are self-adjusted by the design of the oxidation chamber. The solid particles are taken out of the oxidizer by a helical conveyor system and discharged in the collector helical conveyor.

On the exit piping of the the oxidation chamber the oxygen and the gas temperature are monitored and depending on these values, the air and fuel capacity is adjusted.

The gases that exhaust out of the oxidation chamber are cooled in two phases through the heat exchangers and at a maximum temperature of 160-180°C.

A gas probe is fixed on the bag house piping entry to measure the gas level emissions (CO, CO2, O2, NO2, NOx, SO2, SOx). Depending on the obtained data the material capacity and temperature in the oxidation chamber are adjusted.

The shake bag dust is taken by the helical conveyor system into the collector helical conveyor that delivers the treated soil.

The fan assures the depression of the whole system. Gases are exhausted through the stack. The pneumatic installation assures the necessary air for the plant functioning.

The control panel and the power panel are installed in the control house (power supply, driving and control system DAAC, command board PC).

In the control house the operator does the initial system adjustments. Afterwards the computer takes control of the plant, leaving the operator to supervise.

Direct-contact thermal desorption technology is also valid for the soil decontamination of toxic substances coming from pesticides such as HCH, DDT, DDE as well as PCB-s, BTEX and metals like arsenic and mercury.


Thus the thermal desorption plant, type STD-20 can pe upgraded in order to perform such operations at full capacity and environmentally safe.

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Thermal desorption plant - capacity 30 T / H, type SDT - 30
Thermal desorption plant - capacity 30 T / H, type SDT - 30
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