Wet granulation method of carbon black and wet granulation manufacturing system of carbon black

Abstract

The invention relates to a wet granulation method of carbon black. The wet granulation method comprises the specific following operation steps: step 1, cracking acetylene gas so as to form a powdery carbon black raw material and collecting industrial exhaust gas generated by the cracking; and step 2, granulating the powdery carbon black raw material, directly burning the industrial exhaust gas collected in the step 1 by virtue of a hot-blast stove device to generate hot-blast air, and drying carbon black granules by virtue of the hot-blast air generated by the burning. A wet granulation manufacturing system of carbon black comprises an acetylene gas cracking device, a carbon black drying device as well as an exhaust gas collection device and the hot-blast stove device, wherein an exhaust gas outlet is formed in the acetylene gas cracking device; the exhaust gas collection device is provided with a collection tank which is communicated with the exhaust gas outlet and a combustible gas inlet is connected to the collection tank. According to the wet granulation method, the carbon black granules are dried in a manner of burning exhaust gas so that the resources can be recycled and the purposes of energy conservation and emission reduction are achieved. According to the structural design of the system, the heat is supplied by virtue of the exhaust gas and thus the resources can be saved.

Description

technical field [0001] The invention relates to the technical field of carbon black production, and more specifically, to a carbon black wet granulation method and a carbon black wet granulation manufacturing system. Background technique [0002] With the rapid development of my country's economy, especially the growth of tire and rubber industry demand, the carbon black industry has shown an unprecedented development trend, and the output, sales volume, production capacity and technical level have all entered the fast lane. According to statistics from the Carbon Black Summit, my country's carbon black production reached 3.853 million tons in 2011, an increase of 14.2% over the same period in 2010, accounting for 30% of the world's total carbon black, and ranked first in the world for five consecutive years. The output of carbon black is 4.36 million tons, a year-on-year increase of 13%. According to relevant statistics, there are more than 40 varieties of carbon black used ...

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Problems solved by technology

Moreover, it adopts the indirect heat exchange method, which is inefficient and consumes natural gas for heating. The specific way to generate hot air is to burn natural gas and heat the heat transfer oil. The heat transfer oil flows through the heat transfer oil heat exchanger, and the heat transfer oil is heated by circulation. The blower sends the hot air to the carbon black drying equipment, and then indirect heat exchange will waste about 30% of the heat energy

[0006] Therefore, the available industrial tail gas is directly discharged, and natural gas is used for heating at the same time, which causes a lot of waste of resources

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