Light fuel oil
The invention relates to oil refining, more particularly to a composition of a light fuel oil for use in medium-speed diesel engines of marine power units. The inventive light fuel oil comprises, in % by wt.: black oil—(4-10), tar—(2-10), light catalytic cracking gas oil—(10-30), heavy catalytic cracking gas oil—(5-10), a straight-run diesel fuel—(8-10), a viscosity breaking residuum of a heavy oil fraction—the rest. The selected component ratio will enable to improve the fuel stability in transportation and storage, expand the range of available fuels and increase the production volumes of quality fuels, while rationally using poor-quality products readily available at refineries.
1. A light fuel oil comprising the following components by weight percent ratio:
Fuel oil residuum
4-10;
Tar
2-10;
Light catalytic cracking gas-oil
10-30;
Heavy catalytic cracking gas-oil
5-10;
Straight -run diesel fuel
8-10; and
Residue from viscosity breaking of a heavy oil fraction
the rest.
2. The light fuel oil according to claim 1 , further comprising up to 5% by weight of light coker gas oil.
3. The light fuel oil according to claim 1 , further comprising a pour-point depressant comprising ethylene and vinyl acetate copolymers in an amount from 0.02% to 0.1% by wt.
4. A light fuel oil consisting essentially of the following components by weight percent ratio:
Fuel oil residuum
4-10;
Tar
2-10;
Light catalytic cracking gas oil
10-30;
Heavy catalytic cracking gas oil
5-10;
Straight-run diesel fuel
8-10; and
Residue from viscosity breaking
the rest.
of a heavy oil fraction
5. A light fuel oil consisting essentially of the following components by weight percent ratio:
Fuel oil residuum
4-10;
Tar
2-10;
Light catalytic cracking gas oil
10-30;
Heavy catalytic cracking gas oil
5-10;
Straight-run diesel fuel
8-10;
Light coker gas oil
up to 5; and
Residue from viscosity breaking
the rest.
of a heavy oil fraction
6. A light fuel oil consisting essentially of the following components by weight percent ratio:
Fuel oil residuum
4-10;
Tar
2-10;
Light catalytic cracking gas oil
10-30;
Heavy catalytic cracking gas oil
5-10;
Straight-run diesel fuel
8-10;
Pour-point depressant comprising
0.02 to 0.1; and
ethylene and vinyl acetate copolymers
Residue from viscosity breaking
the rest.
of a heavy oil fraction