Load-adjustable step feeding type entrained flow bed gasifier

Abstract

The invention discloses a load-adjustable step feeding type entrained flow bed gasifier. The load-adjustable step feeding type entrained flow bed gasifier is characterized by comprising a pressure shell body, and a reaction chamber and a cooling / dust removal / water bath chilling chamber which are supported and hung in the pressure shell body, wherein the cooling / dust removal / water bath chilling chamber is coaxially arranged at the lower part of the reaction chamber; an annular gap space is arranged between the reaction chamber and the pressure shell body; and the reaction chamber is provided with a main nozzle and a plurality of load adjustment nozzles. The cooling / dust removal / water bath chilling chamber is coaxially arranged at the lower part of the reaction chamber, the main nozzle is arranged at the top part of the gasifier, the load adjustment nozzles are symmetrically arranged in the space at the upper part of the reaction chamber, and water is used to chill high-temperature synthetic gas and clinker discharged below the reaction chamber, so that the single-gasifier yield is effectively increased, the single-gasifier production load adjustment capability is realized, and the hearth reaction region is reasonably arranged, thereby ensuring that the synthetic gas in the hearth can produce a rotational flow, the retention time is long, the reaction is thorough and the load adjustment range is wide.

Description

technical field [0001] The invention relates to a load-adjustable section-feeding type entrained bed gasification device. Background technique [0002] The existing entrained bed gasification technology is divided into dry method and wet method. The main representatives of wet feed are GE’s coal-water slurry gasifier and East China University of Science and Technology’s multi-nozzle gasifier. The reaction chamber is lined with refractory materials, and most of them adopt the water quenching process, that is, the high-temperature crude gas generated is directly quenched with water. The main representative of the dry coal gasification process is Shell in the Netherlands. Its gasifier adopts a four-nozzle water-cooled wall structure, and the synthesis gas is cooled by a waste boiler process. The advantages are wide adaptability of raw materials, high cold gas efficiency, high carbon conversion rate, and relatively Oxygen consumption is low. [0003] To sum up, the number of ...

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Problems solved by technology

In order to ensure the reaction time, the height of the furnace should not be too low, and the slag outlet is just located at the lowest point of the furnace temperature of the gasification furnace. In order to take both into consideration, the temperature of the gasification reaction must be increased. efficiency, while increasing specific oxygen consumption and specific coal consumption

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