Provided is a mercury adsorbent that can efficiently adsorb and remove mercury and/or a mercury compound contained in a liquid hydrocarbon and can suppress corrosive action even when used for a long time. The mercury adsorbent comprises an activated carbon including a mineral acid supported thereon, the activated carbon having a specific surface area of 1000 m.sup.2/g or larger and a volume of micropores of 80 cm.sup.3/g or larger, each of the micropores having a pore radius of 8 Å or smaller, and the mercury adsorbent has a moisture content of from 0.1 to 3 wt %.

Provided is a mercury adsorbent that can efficiently adsorb and remove mercury and/or a mercury compound contained in a liquid hydrocarbon and can suppress corrosive action even when used for a long time. The mercury adsorbent comprises an activated carbon including a mineral acid supported thereon, the activated carbon having a specific surface area of 1000 m.sup.2/g or larger and a volume of micropores of 80 cm.sup.3/g or larger, each of the micropores having a pore radius of 8 Å or smaller, and the mercury adsorbent has a moisture content of from 0.1 to 3 wt %.

The present embodiment pertains to a technique for removing at least 90% of the chlorine in high Cl content oil by performing a high-temperature treatment using solid acid substances. The oil removed Cl from a waste oil can be incorporated in a refinery process and thereby converted into fuel or a chemical product. Chlorine can be removed through a high-temperature heat treatment after mixing high Cl content oil with a solid acid material. In the process of removing Cl, major impurities, such as S, N, and O, as well as Na, Ca, and Fe, which can act as catalyst poisons in the catalytic reactions of a refinery process, are also removed at the same time.

The present embodiment pertains to a technique for removing at least 90% of the chlorine in high Cl content oil by performing a high-temperature treatment using solid acid substances. The oil removed Cl from a waste oil can be incorporated in a refinery process and thereby converted into fuel or a chemical product. Chlorine can be removed through a high-temperature heat treatment after mixing high Cl content oil with a solid acid material. In the process of removing Cl, major impurities, such as S, N, and O, as well as Na, Ca, and Fe, which can act as catalyst poisons in the catalytic reactions of a refinery process, are also removed at the same time.

Provided is a technology of removing 90% or more chlorine by treating an oil fraction having a high Cl content at a high temperature using a solid acid catalyst. The dechlorinated oil fraction may be introduced to a refinery process and converted into a fuel or a chemical product. The solid acid catalyst and the oil fraction having a high Cl content are mixed and then chlorine is removed by a heat treatment at a high temperature. Main impurities such as S, N, and O and Na, Ca, Fe, and the like which may act as a catalyst poison in the catalyst reactions of a refinery process are removed simultaneously with the process of removing Cl.

Provided is a technology of removing 90% or more chlorine by treating an oil fraction having a high Cl content at a high temperature using a solid acid catalyst. The dechlorinated oil fraction may be introduced to a refinery process and converted into a fuel or a chemical product. The solid acid catalyst and the oil fraction having a high Cl content are mixed and then chlorine is removed by a heat treatment at a high temperature. Main impurities such as S, N, and O and Na, Ca, Fe, and the like which may act as a catalyst poison in the catalyst reactions of a refinery process are removed simultaneously with the process of removing Cl.

The present application provides a one-step refining process of a hydrocarbon feedstock, said process comprising heating said hydrocarbon feedstock with one or more fatty acids or mixtures thereof, at a temperature below 350 C., to obtain a light hydrocarbon product, wherein said light hydrocarbon product obtained in said process contains no heavy hydrocarbons products.

The present application provides a one-step refining process of a hydrocarbon feedstock, said process comprising heating said hydrocarbon feedstock with one or more fatty acids or mixtures thereof, at a temperature below 350 C., to obtain a light hydrocarbon product, wherein said light hydrocarbon product obtained in said process contains no heavy hydrocarbons products.

The present application provides a one-step refining process of a hydrocarbon feedstock, said process comprising heating said hydrocarbon feedstock with one or more fatty acids or mixtures thereof, at a temperature below 350 C., to obtain a light hydrocarbon product, wherein said light hydrocarbon product obtained in said process contains no heavy hydrocarbons products.

The present application provides a one-step refining process of a hydrocarbon feedstock, said process comprising heating said hydrocarbon feedstock with one or more fatty acids or mixtures thereof, at a temperature below 350 C., to obtain a light hydrocarbon product, wherein said light hydrocarbon product obtained in said process contains no heavy hydrocarbons products.