Floating valve type anti-blocking fluidization ash conveying method and system for dust remover

Abstract

The invention provides a floating valve type anti-blocking fluidization ash conveying method and system for a dust remover. The floating valve type anti-blocking fluidization ash conveying system comprises the dust remover, a fluidization device and a nitrogen gas gun, wherein an ash hopper is arranged at the lower end of the dust remover; an ash guiding pipe penetrates through the side wall of the ash hopper, and an outlet of the ash guiding pipe is connected with an ash-conveying gas-supplying pipe; the fluidization device is fixedly arranged at the lower end of the ash hopper, the fluidization device is located below an inlet of the ash guiding pipe, a fluidization device gas-supply pipe is connected with an inlet at the lower end of the fluidization device, and a plurality of floatingvalves capable of ventilating are arranged at intervals at the upper end of the fluidization device; and the nitrogen gas gun comprises a nitrogen gas tank and a plurality of injection pipes, whereinthe injection pipes penetrate through the fluidization device at intervals in the circumferential direction, inlets of the injection pipes are connected with the nitrogen gas tank, and outlets of theinjection pipes penetrate through the fluidization device and are provided with torrent injectors. According to the floating valve type anti-blocking fluidization ash conveying method and system for the dust remover, dense-phase pneumatic ash conveying is realized in a mode of combining fluidization with ash conveying, continuous blockage of ash is solved, ash conveying is reliable, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of ash conveying engineering, in particular to a floating valve anti-clogging fluidized ash conveying method and system, and more specifically to a floating valve anti-clogging fluidized ash conveying method and system for dust collectors. Background technique [0002] The phenomenon that solid particles exhibit a fluid-like state under the action of a fluid is called fluidization, that is, fluidization. After the solid particles are fluidized, they can be transported in pipelines, that is, pneumatic conveying. According to the ratio of solid particles to gas, pneumatic conveying can be divided into dilute phase pneumatic conveying and dense phase pneumatic conveying. [0003] The characteristic of dilute phase pneumatic conveying is that the material is evenly distributed in the airflow of the pipeline, with low concentration and high speed, such as figure 1 The schematic diagram of dilute-phase pneumatic ...

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Problems solved by technology

[0004] In the current blast furnace construction project, the dust collector is directly purged with high-pressure nitrogen to transport ash, but it produces a phenomenon of dilute phase ash transport, which requires a large amount of nitrogen, high operating costs, and in the case of blockage, the transport cannot be realized. Ash, in order to avoid clogging, a vibrator will be used to clear the clogging, but for continuous clogging (that is, there is a continuous clogging in the middle part of the clogging, and the bulk density is large), the vibrating device will produce a phenomenon that the more it is beaten, the more porcelain will be. Cause more serious blockage, also exist in the prior art to use nitrogen gun to clear blockage (as image 3 shown), which includes a nitrogen tank 7, a solenoid valve 9 and an output straight pipe 8, but it is only suitable for axial non-continuous blockage and does not have the function of working condition adjustment

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