Ash discharge equipment and ash discharge method for solid-state ash discharge gasifier

Abstract

The invention relates to ash discharge equipment and an ash discharge method for a solid-state ash discharge gasifier. The gasifier is provided with an ash discharge port. The ash discharge equipment comprises a collecting device, wherein the collecting device comprises a casing, multiple walls and a detecting component; the casing comprises an inlet and an outlet; the inlet and the ash discharge port are communicated through a pipeline provided with an on-off valve; the pipeline is suitable for accumulation of ash to the first height, so that pressure in the pipeline corresponds to pressure of the ash discharge port; the inlet has a first pressure state suitable for receiving of the ash from the pipeline, and the outlet has a second pressure state which is smaller than the first pressure state and suitable for discharge of the ash; the multiple walls are movably mounted in the casing, form multiple accommodating cavities and are constructed in such a manner that the multiple walls are matched with the casing, and accordingly, in the process that one of the multiple accommodating cavities moves to be communicated with the outlet instead of the inlet, the pressure is gradually reduced from the first pressure state to the second pressure state; the detecting component is used for detecting the accumulation height of the ash in the pipeline and/or the pressure in the pipeline. With the adoption of the ash discharge equipment and the ash discharge method for the solid-state ash discharge gasifier, abrasion of a valve can be reduced, the valve is prevented from occupying the inside space of an ash discharge container, and the ash discharge efficiency is improved.

Description

technical field [0001] The invention relates to the field of coal gasification, in particular to a slagging device and a slagging method for a solid-state slagging gasifier. Background technique [0002] Ash lock is ash collection equipment, also known as ash tank, which is directly or connected to the moving bed or fluidized bed gasifier through pipelines, and regularly collects the ash stored in the gasifier by controlling the pressure filling and pressure relief cycles. ash, and the collected ash is discharged out of the system through the ash drop pipe. The upper and lower valves of the ash lock are important components for controlling the pressure change of the ash lock and connecting the ash lock to the gasifier. At present, the upper and lower valves of the gray lock adopt cone valves, including the upper valve stem, lower valve stem, valve stem guide system (including guide sleeve and guide ring), transmission system (internal rocker arm) located in the inner cavity...

AI Technical Summary

Problems solved by technology

In addition, the gray lock cannot achieve continuous slag discharge, and the efficiency is low

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