NOVELTY - The apparatus comprises a reactor provided with a biomass in a silo. A noncondensing gas storage that separates a noncondensable gas ejected in a condenser. A cyclone unit separates a synthetic gas discharged from the reactor. The condenser gradually produces a bio oil by cooling the synthetic gas. A condenser includes first and second condenser parts. The second condenser part includes oil tanks and is connected to a rear end of the first condenser part in which the condenser is directly connected to the cyclone unit. The oil tanks stores oil from the bio-oil from the first condenser part.    USE - The apparatus is useful for producing bio-oil (claimed) from biomass such as empty fruit bunch.    ADVANTAGE - The apparatus ensures rapid thermal decomposition and multi-phase cooling of the gas and effectively utilizes the waste heat.    DETAILED DESCRIPTION - The apparatus comprises a reactor provided with a biomass in a silo. A noncondensing gas storage that separates a noncondensable gas ejected in a condenser. A cyclone unit separates a synthetic gas discharged from the reactor. The condenser gradually produces a bio oil by cooling the synthetic gas. A condenser includes first and second condenser parts. The second condenser part includes multiple oil tanks and is connected to a rear end of the first condenser part in which the condenser is directly connected to the cyclone unit. The oil tanks stores oil from the bio-oil from the first condenser part. The oil tank is kept at a temperature of 100-200 degrees C. A stalk oil tank is kept at a temperature of 0-100 degrees C. A noncondensing gas supply part resupplies the noncondensable gas stored in the reactor. A gas preheater increases the temperature of the gas supplied from the noncondensing gas supply part, and comprises two gas preheater parts. The gas preheater is connected to a smoke gas evacuation pipeline connected to the reactor in the first gas preheater. The second gas preheater part is arranged between the first gas preheater part and the reactor. A control unit is electrically connected to the noncondensing gas supply part. A supply part supplies combustible gas to the reactor. The control unit controls the mixing of the combustible gas or the noncondensable gas. An INDEPENDENT CLAIM is included for a bio oil manufacturing process.