Gasification device and method for carbon-containing substance

Gasification device and method for carbon-containing substance

  • CN 104,650,987 B
  • Filed: 11/25/2013
  • Issued: 01/14/2020
  • Est. Priority Date: 11/25/2013
  • Status: Active Grant
First Claim
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1. A method for gasifying dry powder of a carbonaceous substance is characterized by comprising the following steps:

  • the method comprises the following steps;

    i) the carbon-containing substance and the oxygen-containing gasifying agent are subjected to gasification reaction to generate CO and H as main components2The raw synthesis gas and ash slag with inorganic substances as main components;

    ii) cooling and purifying part of the crude synthesis gas and most of ash slag downwards, sending the cooled and ash-removed crude synthesis gas to a subsequent process, and discharging the quenched ash slag through a slag outlet;

    the rest part of the crude synthesis gas and the fly ash go upward to be mixed with cooling substances for cooling, and then enter a cooling reaction section for carrying out the reaction of the carbon which is not completely reacted and the supplementary gasification agent;

    cooling and purifying the reacted crude synthesis gas and fly ash to remove fly ash in the crude synthesis gas, and sending the clean low-temperature crude synthesis gas to a subsequent process;

    further, when the slag hole is blocked and the pressure difference of the slag hole is increased, the descending gas amount is continuously increased, the temperature of the slag hole is slowly increased, and redundant solid slag is slowly melted until the pressure difference of the slag hole returns to the normal range.

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