Fixed bed of coal gasifier, comprising:an upright cylindrical wall, which defines a coal gasification chamber, in which coal in the form of a coal gasification bed, can be fixed, in order to synthesis gas and ash in an ash bed to produce below the coal bed;a coal by means of the lock chamber, wherein the coal lock a centrally arranged coal emptying opening with the coal gasification chamber and an adjustable closure part for closing of the coal emptying opening, wherein the closure part between a closed position, in which it closes the coal emptying opening, and an open position in which the coal emptying opening is uncovered or is open, can be adjusted so that coal by the force of gravity of the coal lock by means of the coal emptying opening in the coal gasification chamber can reach;a static coal distribution direction within the coal gasification chamber, wherein the static coal distribution in the direction of a hollow coal distributor with an upper open end at a distance from the coal emptying opening, which is directed downwards and outwards from its upper end to a lower open end of the same and, without that a static coal distribution direction between the upper end of the coal distributor and the coal emptying opening is provided, apart from possibly of the closure part; an apron, the downwardly from the interior of the coal distributor, so that a gas collecting zone between the skirt and the coal distributor being fixed, and the upper part of the gas collecting zone is closed off, while the bottom part thereof in conjunction with the coal gasification chamber; and at least one gas outlet in the coal distributor, wherein the gas outlet with the ..
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