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Double fluidized bed reaction system

A reaction system and double fluidized bed technology, applied in the field of reactors, can solve problems such as high cost and difficulty in controlling steam production, and achieve the effects of reducing operating costs, overall compactness, and improving economy.

Inactive Publication Date: 2018-07-10
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] An object of the present invention is to provide a dual fluidized bed reaction system to solve the problem that the cost of the current dual fluidized bed gasification technology is too high, and it is difficult to control the steam production when realizing self-supply of water vapor

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Embodiment Construction

[0018] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0019] Such as figure 1 A schematic flow diagram of a dual fluidized bed reaction system provided by the present invention is shown. In a specific embodiment provided by the present invention, the dual fluidized bed reaction system includes a gasification furnace 1, a combustion furnace 2 and a gasification furnace connected to the gasification furnace. The first pipeline and the second pipeline 32 of the furnace 1, the bed material is housed in the gasification furnace 1 and the combustion furnace 2, and the bed material ...

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Abstract

The invention discloses a double fluidized bed reaction system, which comprises a gasification furnace, a combustion furnace, a first pipeline communicated to the gasification furnace, and a second pipeline communicated to the gasification furnace, wherein the first pipeline comprises a first branch and a second branch, and one of the first branch and the second branch is arranged into an evaporation pipeline provided with a steam generator. According to the present invention, with the double fluidized bed reaction system, the self-supply of water vapor in the double fluidized bed gasificationfurnace can be achieved, and the output of the evaporator can be changed by changing the amount of the bed material entering the evaporation pipeline so as to flexibly control the steam production; and the use of the external steam generation system can be reduced even avoided, such that the whole gasification furnace is compact, the operation economy of the gasification furnace can be improved,and the operation cost of the gasification furnace can be reduced.

Description

technical field [0001] The present invention relates to the field of reactors. More specifically, it relates to a dual fluidized bed reaction system. Background technique [0002] Gasification technology can realize the clean and efficient utilization of solid fuels such as coal and biomass. Among them, steam fluidized bed gasification has attracted extensive attention and research in the industry because it can operate efficiently under normal pressure. Since the steam gasification process absorbs heat, additional heat is required to maintain the continuous gasification process. In industry, this part of heat supply is generally achieved by burning part of the fuel. For a single gasifier, if air combustion is used for heating, a large amount of N in the air 2 It will dilute the concentration of combustible components in the gas and reduce the quality of the gas. If oxyfuel gasification is used, additional energy is consumed to prepare additional oxygen, thereby reducing ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/56
CPCC10J3/56C10J2300/0976
Inventor 严林博曹旸何伯述李学政
Owner BEIJING JIAOTONG UNIV
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