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Entrained flow gasification system and method

A gasification system and entrained bed technology, applied in the field of coal gasification, can solve the problems of poor quality of recovered steam, low heat storage and recovery efficiency, and achieve the effect of full energy utilization

Active Publication Date: 2017-08-11
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This gasification method has low heat storage and recovery efficiency, and the quality of recovered steam is poor.

Method used

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  • Entrained flow gasification system and method
  • Entrained flow gasification system and method

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Embodiment Construction

[0034] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] Attached below Figure 1 to Figure 4 The entrained bed gasification system 100 according to the embodiment of the first aspect of the present invention will be described in detail.

[0036] Such as figure 1 As shown, an entrained bed gasification system 100 according to an embodiment of the present invention includes a gasifier 10 , a steam drum 20 and a gas scrubber 30 . Specifically, the gasification furnace 10 includes a connected gasification chamber 11 and a radiation waste pot 12, the gasification chamber 11 has a feed inlet 111 and an oxygen inlet 112, and the radiation waste pot 12 has a first water inlet 121 and a first steam outlet 122, crude ...

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Abstract

The invention discloses an entrained flow gasification system and method. The entrained flow gasification system comprises a gasifier, a steam drum and a scrubber tower, wherein the gasifier comprises a gasification chamber and a radiant syngas cooler, the gasification chamber is provided with a feeding port and an oxygen inlet, and the radiant syngas cooler is provided with a first water inlet, a first steam outlet, a raw gas outlet and a slag outlet; the steam drum is provided with a first water outlet, a first steam inlet and a steam exhaust port, the first water outlet and the first water inlet are communicated, and accordingly, heat exchange with the radiant syngas cooler is realized through water in the steam drum; the scrubber tower is provided with a raw gas inlet and a raw gas exhaust port, and the raw gas inlet and the raw gas outlet are communicated, so that the scrubber tower scrubs raw gas exhausted by the gasifier. According to the entrained flow gasification system provided by the embodiment of the invention, a heat recovery mode adopting chilling water to recover heat in related technology is broken through, sensible heat of gas in a coal gasification process is recovered totally, and high-quality steam is produced, so that energy is used more sufficiently.

Description

technical field [0001] The invention relates to the technical field of coal gasification, and more specifically, to an entrained-flow gasification system and a gasification method. Background technique [0002] Since the entrained bed gasification technology started to be used in our country at the end of the last century, it has been more than 20 years so far, and nearly a hundred gasifiers are in use. The heat recovery in these gasification processes has always adopted the heat recovery method of direct chilling, and the high-temperature hot water after chilling is used for heat recovery through a flash evaporation system. This gasification method has low heat storage and recovery efficiency, and the quality of recovered steam is poor. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the present invention proposes an entrained-bed gasification system, which h...

Claims

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Application Information

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IPC IPC(8): C10J3/48C10J3/84C10J3/86
CPCC10J3/466C10J3/485C10J3/84C10J3/86C10J2300/1603
Inventor 张建胜吕俊复
Owner TSINGHUA UNIV
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