US 4,355,586 AGranted

Solid fuel gasification system

OwnerCharles K. Browninventor

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Abstract

The invention is an improved system for solid fuel gasification, such as coal. A coal type fuel is reduced to as near a one hundred percent molecularly dispersed condition as possible to achieve the maximum efficiency of combustion in a combustion type device. The system consists of a series of steps. The first step mechanically pulverizes the coal to pass through a 300 mesh screen. The second step thermally drives off the volatile gases and the char is burned to a carbon monoxide gas state. The resulting gasified coal combination is then fed to the burners of the combustion type device.

Claims9

Dependent claims

A solid fuel gasification system, comprising:

a solid fuel gasification section, said solid fuel gasification section having a fuel feed means, a gas cleaning section, said gas cleaning section being connected to said solid fuel gasification section, a fuel pulverizing means, a thermal gasification means, and a separation means, said fuel pulverizing means being connected to said fuel feed means, said thermal gasification means being connected to said fuel pulverizing means, and said separation means being connected to said thermal gasification means, said fuel pulverizing means having a hollow shaft means, an upper pulverizing rotor, a plurality of first annular concentric rings, a lower pulverizing rotor, a plurality of second annular concentric rings, and a solid shaft means, said upper pulverizing rotor being centrally affixed to said hollow shaft means, said upper pulverizing rotor having an upper and a lower surface, said plurality of first annular concentric rings being affixed to the lowermost surface of said upper pulverizing rotor, said plurality of first annular concentric rings projecting downwardly from said lowermost surface of said rotor, said lower pulverizing rotor having an upper and a lower surface, the plane of said lower pulverizing rotor being parallel to and spaced from the plane of said upper pulverizing rotor, said plurality of second annular concentric rings being affixed to the uppermost surface of said lower pulverizing rotor, said plurality of second annular concentric rings projecting upwardly from said uppermost surface of said rotor, said solid shaft means being centrally affixed to said lower pulverizing rotor, the centerline of said solid shaft means coinciding with the centerline of said hollow shaft means, said thermal gasification means having an outside wall means, an inside wall means, and an annular ring burner, said outside wall means being of a conical-like configuration, said inside wall means being of a conical-like configuration and spaced from and parallel to said outside wall means, said spaced area between said outside and said inside wall means forming a gasification chember, said annular ring burner encircling said inside wall means and being spaced from the ends of said inside wall means, said annular ring burner being capable of supplying a peripheral flame around and across said gasification chamber.

Dependencies are inferred from the claim text.

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Abstract

A solid fuel gasification system, comprising:

a solid fuel gasification section, said solid fuel gasification section having a fuel feed means, a gas cleaning section, said gas cleaning section being connected to said solid fuel gasification section, a fuel pulverizing means, a thermal gasification means, and a separation means, said fuel pulverizing means being connected to said fuel feed means, said thermal gasification means being connected to said fuel pulverizing means, and said separation means being connected to said thermal gasification means, said fuel pulverizing means having a hollow shaft means, an upper pulverizing rotor, a plurality of first annular concentric rings, a lower pulverizing rotor, a plurality of second annular concentric rings, and a solid shaft means, said upper pulverizing rotor being centrally affixed to said hollow shaft means, said upper pulverizing rotor having an upper and a lower surface, said plurality of first annular concentric rings being affixed to the lowermost surface of said upper pulverizing rotor, said plurality of first annular concentric rings projecting downwardly from said lowermost surface of said rotor, said lower pulverizing rotor having an upper and a lower surface, the plane of said lower pulverizing rotor being parallel to and spaced from the plane of said upper pulverizing rotor, said plurality of second annular concentric rings being affixed to the uppermost surface of said lower pulverizing rotor, said plurality of second annular concentric rings projecting upwardly from said uppermost surface of said rotor, said solid shaft means being centrally affixed to said lower pulverizing rotor, the centerline of said solid shaft means coinciding with the centerline of said hollow shaft means, said thermal gasification means having an outside wall means, an inside wall means, and an annular ring burner, said outside wall means being of a conical-like configuration, said inside wall means being of a conical-like configuration and spaced from and parallel to said outside wall means, said spaced area between said outside and said inside wall means forming a gasification chember, said annular ring burner encircling said inside wall means and being spaced from the ends of said inside wall means, said annular ring burner being capable of supplying a peripheral flame around and across said gasification chamber.