Method of preparing carbon black by wet granulation

Abstract

The application provides a method of preparing carbon black by wet granulation, comprising: (1) collecting data, to be specific, acquiring dryer outlet carbon black temperature, primary lift outlet carbon black temperature and secondary lift outlet carbon black temperature as basic data; (2) estimating tail gas flow, to be specific, acquiring a coefficient of ratio of the tail gas flow to granulation water flow as well as a primary lift outlet carbon black temperature adjustment variable, and determining new tail gas flow for use in operation; (3) executing, to be specific , granulating and drying the carbon black according to the determined new tail gas flow. The method has the advantages that the quantity of tail gas fed to a dryer tail gas combustor is controlled in the carbon black preparation process so as to control carbon black drying temperature, the temperature of the carbon black at a dryer outlet can be stably controlled, it is effectively ensured that the obtained carbon black has qualified and stable water content, and the qualified carbon black is attained.

Description

technical field [0001] The application relates to the technical field of chemical industry, in particular to a method for preparing carbon black by wet granulation, in particular to automatically control the preparation process of wet granulation through the automatic calculation of the carbon black tail gas flow rate and the ratio coefficient of the granulation water flow rate A method of drying carbon black. Background technique [0002] At present, most domestic carbon black enterprises use the wet granulation process to produce carbon black. The wet granulation of carbon black is to put powdered carbon black and an aqueous solution containing a certain amount of binder (referred to as granulation water) in a granulator. , a method of forming granular carbon black by the rotation of the stirring teeth. After the granular carbon black leaves the pelletizer, the wet pellets must be dried by a rotary kiln dryer supplemented by external heating and passage of hot flue gas. ...

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Problems solved by technology

This mode of relying on manual adjustment must not be adjusted in a timely and accurate manner, which will inevitably cause large fluctuations in the temperature of carbon black at the outlet of the dryer.

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