A weighing-type activated carbon intelligent feeding system for adsorbing dioxins

Abstract

The invention relates to a Dioxin absorbed weighing type activated carbon intelligent feeding system. The feeding system comprises an activated carbon storing bin, a Roots blower, a conveying pipe, aflue, a fixed bed frame and a PLC control system, and further comprises a vacuum feeding machine, a metering storage bin, a buffer bin and a disc feeding machine which are sequentially distributed upand down; the bottom end of the vacuum feeding machine is communicated to the top of the metering storage bin through a first soft connecting pipe, the upper portion of the vacuum feeding machine is connected to the activated carbon storing bin, a weighing sensor is fixed to the metering storage bin, a discharging opening in the bottom end of the metering storage bin is fixedly provided with an electromagnetic valve, the discharging opening is communicated to the top end of the buffer bin through a second soft connecting pipe, a discharging pipe at the bottom end of the disc feeding machine iscommunicated to the conveying pipe, one end of the conveying pipe is communicated to an air outlet of the Roots blower, and the other end of the conveying pipe is communicated into the flue. According to the feedings system, intelligent running is conveniently achieved, the weight of activated carbon materials in the metering storage bin is displayed in real time, accurate feeding of the conveying pipe is achieved, and the isolating effect on the negative pressure in the flue can be achieved.

Description

technical field [0001] The invention relates to the technical field of activated carbon feeding, in particular to a weighing-type activated carbon intelligent feeding method for adsorbing dioxins, and also to a weighing-type activated carbon intelligent feeding system for adsorbing dioxins. Background technique [0002] In the waste incineration treatment industry, the emitted flue gas will contain a substance called dioxin, which is difficult to degrade and eliminate naturally. In addition to carcinogenic toxicity, dioxin also has reproductive toxicity and genotoxicity, directly endangering the health and life of future generations. The country has attached great importance to the emission control of dioxins. The simplest and most effective method is to use the high specific surface area and developed mesoporosity of activated carbon powder to strongly adsorb organic pollutants such as dioxins and heavy metals to reduce dioxins. UK emissions. [0003] At present, the exis...

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Problems solved by technology

[0003] At present, the existing activated carbon feeding system on the market generally uses a spiral to convey activated carbon to absorb dioxins into the flue of the waste-burning boiler, and uses a motor to control the speed of the screw conveyor to roughly estimate the amount of activated carbon to be fed, which is calculated by detecting the motor speed The feeding amount of activated carbon; the problems with this control method are: first, when there is no activated carbon in the silo, the system cannot detect that the screw machine is in an idling state, and the feeding data is still continuously transmitted to the system; The meter detects the material level, which can only detect the two states of the material bin full or empty, and cannot detect the real-time material level of the material bin; the third is that the boiler flue is in a negative pressure state under the traction of the induced draft fan, and the spiral has no air lock effect , it is easy to quickly absorb the activated carbon in the silo through the spiral cylinder, resulting in waste of raw materials and uneven feeding; Fourth, manual feeding is used in the activated carbon silo, resulting in labor waste and increased costs

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