Recyclable ash flexible adjustment proportion discharging controller for recycling fluidized bed boiler

Abstract

The invention discloses a recyclable ash flexible adjustment proportion discharging controller for a recycling fluidized bed boiler. The recyclable ash flexible adjustment proportion discharging controller comprises an air chamber with a fluidized air port, wherein the air chamber is communicated with an discharging controller box; the top end of the discharging controller box is communicated with a recycling ash vertical pipe, a material-returning inclined pipe and a low-temperature ash discharging pipe; the pipe mouth of the recycling ash vertical pipe is arranged between the pipe mouth of the material-returning inclined pipe and the pipe mouth of the low-temperature ash discharging pipe; the discharging controller box is internally provided with a heat exchanging surface; and the heat exchanging surface is arranged in the region between the pipe mouth of the low-temperature ash discharging pipe and the pipe mouth of the recycling ash vertical pipe. According to the recyclable ash flexible adjustment proportion discharging controller disclosed by the invention, a proper recycling ash amount can be kept in the operation process of the recycling fluidized bed boiler, and remote operations can be implemented; and the recyclable ash flexible adjustment proportion discharging controller has the advantages of compact structure, small abrasion of heating surface pipe bundles, flexibility for ash flow adjustment, low ash discharging temperature, strong safety, freeness from mechanical rotary parts of a whole controller, low instrument cost, low operation cost and low maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of circulating fluidized bed boiler ash circulation control, and in particular relates to a circulating ash flexible adjustment ratio discharge controller for circulating fluidized bed boilers. Background technique [0002] Circulating ash refers to the material in the external circulation collected by the cyclone separator of the circulating fluidized bed boiler. A sufficient amount of circulating ash in the dense phase area of ​​the circulating fluidized bed is an effective means to control the bed temperature from being too high. On the contrary, if the circulating ash If the amount is too much, it will lead to low bed temperature and insufficient combustion, resulting in reduced combustion efficiency. At the same time, it will cause problems such as increased wear and increased energy consumption of the fan. [0003] Coal as the main primary energy is the energy characteristic of our country. For the ef...

AI Technical Summary

Problems solved by technology

The existing discharge method is to discharge hot ash through the ash discharge pipe, which has potential safety hazards, and the discharge volume is not easy to control, and remote monitoring and operation cannot be performed

Images