Active carbon conveying and injecting system and process for purifying smoke using system

Abstract

The invention belongs to the technical field of purification devices and particularly relates to an active carbon conveying and injecting system. The active carbon conveying and injecting system comprises a storage bin, an unloading device, a discharging device and a control device, wherein the unloading device comprises a feeding machine and a metering device; the feeding machine is connected with an unloading opening; the metering device is connected with the feeding machine; the discharging device comprises an active carbon injector; the active carbon injector is connected with a discharging pipe; a discharging opening is formed in the discharging pipe; the discharging pipe is connected with a smoke channel; a flow regulating valve is arranged on the discharging pipe; a pressure sensoris arranged in the discharging pipe; a gravity sensor is arranged on the metering device; a smoke analyzer is arranged in the smoke channel; the pressure sensor, the gravity sensor and the smoke analyzer are electrically connected with a controller; the controller is electrically connected with the feeding machine, the active carbon injector and the flow regulating valve. The invention also provides a process for purifying smoke by using the system. The controller is capable of finally controlling discharging amount of active carbon powder and monitoring the whole system in real time; the purification efficiency and the safety are improved.

Description

Technical field [0001] The invention belongs to the technical field of purification devices, and specifically relates to an activated carbon delivery injection system and a process for purifying flue gas. Background technique [0002] In hazardous waste incineration projects, the emission control of dioxins in the flue gas emission indicators is very important. Activated carbon adsorption is one of the effective means. At the same time, it can adsorb heavy metals in the flue gas. Activated carbon adsorption is a simple and effective way to reduce dioxin emissions. Activated carbon is a kind of adsorbent with a large specific surface area, which can effectively adsorb dioxins and other pollutants in flue gas. The method of spraying activated carbon or porous adsorbent into the flue gas for adsorption, and then using a bag filter to capture, can remove most of the dioxin. After research, the particulate dioxins in the flue gas account for about 85-98% of the total, and gaseous ...

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Problems solved by technology

[0004] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides an activated carbon delivery and injection system. The technical problem solved by the purpose of the present invention is that the injection amount of activated carbon powder cannot match the amount of flue gas in the flue, resulting in the problem that the purification efficiency is not high The present invention also provides a method for purifying flue gas with an activated carbon delivery injection system. The technical problem solved is that the injection amount of activated carbon cannot be effectively controlled, and the monitoring of the internal pressure of the discharge pipe cannot be satisfied, resulting in low safety. The problem

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