Device, gasifier and method for detecting fluidization uniformity of pulverized coal in fluidized bed gasifier

Abstract

The invention discloses a device for detecting fluidization uniformity of pulverized coal in a fluidized bed gasifier in real time, the fluidized bed gasifier with the device and a method for detecting fluidization uniformity of the pulverized coal, relates to the technical field of gasifiers and aims to solve the problem about detection of the fluidization state of the pulverized coal and guide process control operation in time. The device for detecting fluidization uniformity of the pulverized coal in the fluidized bed gasifier in real time comprises a concentration detection element installed in a dense phase region of the fluidized bed gasifier, a gasifying agent flow detection element installed at a gasifying agent inlet of the fluidized bed gasifier and a processing device, wherein the processing device is connected with the concentration detection element and the gasifying agent flow detection element. The device for detecting fluidization uniformity of the pulverized coal in the fluidized bed gasifier, the fluidized bed gasifier with the device and the method for detecting fluidization uniformity of the pulverized coal are used for detecting the fluidization state of the pulverized coal in the gasifier in real time.

Description

Technical field [0001] The invention relates to the technical field of gasification furnaces, in particular to a device for detecting the uniformity of pulverized coal fluidization in a fluidized bed gasifier, a fluidized bed gasifier with the device, and a method for detecting the uniformity of pulverized coal fluidization. Background technique [0002] When a fluidized bed gasifier is used for coal gasification reaction, the gasification agent is usually transported into the fluidized bed gasifier through the gas distribution plate, and is at a certain temperature and pressure with the pulverized coal entering the fluidized bed gasifier The reaction proceeds to generate useful gas. Among them, in order to improve the reaction efficiency, it is necessary to make the gasification agent and the pulverized coal come into full and uniform contact. [0003] During the reaction between the fluidized bed gasification agent and pulverized coal, the inventor found that the prior art has a...

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Problems solved by technology

[0003] In the process of the above-mentioned reaction between the fluidized bed gasification agent and the pulverized coal, the inventors have found that there are at least the following problems in the prior art: in the operation of the fluidized bed gasifier, the fluidization of the pulverized coal often occurs unevenly, causing the gasification The gasification agent and pulverized coal cannot fully react, resulting in excessive gasification agent in one area and insufficient content in another area, which will cause slagging and coking of pulverized coal, and affect the long-term stable operation of the fluidized bed gasifier

At present, only relying on the subsequent discharge of ash to judge whether there is uneven fluidization of pulverized coal during the operation of the fluidized bed gasifier, this method delays the timing of discovery, especially for larger diameter fluidized bed gasifiers , it is found that the phenomenon of uneven fluidization of pulverized coal is more delayed, which can delay the best time to adjust the process parameters

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