Apparatus for producing carbon black through thermal cracking method

Abstract

The invention discloses an apparatus for producing carbon black through a thermal cracking method. The apparatus comprises a main wind supply device respectively connected with a cracking furnace A and a cracking furnace B, wherein the cracking furnace A and the cracking furnace B are connected with a bag filter, the bag filter is sequentially connected with a hydrogen-rich induced fan, a washing tower and a hydrogen-rich gas cabinet, the cracking furnace A structure comprises a cavity, the lower end of the cavity is connected with the furnace body, the furnace body is sequentially divided into a pre-heating section and a cracking section from top to bottom, the lower end of the cracking section is connected with a support collection section, the upper end of the cavity is provided with a fuel gas spraying interface, the left end of the cavity is provided with an explosion prevention port, and the right end of the cavity is provided with a natural gas inlet. According to the present invention, tail gas produced during semi-reinforcing carbon black production can be adopted to heat, such that the tail gas produced during semi-reinforcing carbon black production can be completely recycled, energy sources are saved, and air pollution caused by the tail gas is reduced so as to provide characteristics of energy saving and environmental protection; operation maintenance is convenient; and the produced carbon black product has stable quality, and production capacity is substantially increased.

Description

technical field [0001] The invention relates to a carbon black production device, in particular to a device for producing carbon black by thermal cracking. Background technique [0002] Thermal cracking method (also known as thermal cracking method) is a common method of carbon black production. It uses natural gas as raw material and produces carbon black through high temperature thermal cracking at 1000 to 1300 °C in the absence of oxygen and flame. The carbon black produced by this method has unique qualities and is widely used in rubber, machinery, metallurgy, plastics and other fields. [0003] At present, the thermal cracking carbon black manufacturers in the world mainly include CANCARB LIMITED in Canada, EVONIC in the United States and GAZPROM in Russia. The typical equipment and process used to produce carbon black by this method are as follows: figure 1 As shown, the main supply fan 1 is connected with the cracking furnace A2 and the cracking furnace B3 respectiv...

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Problems solved by technology

[0004] Although this method recycles the generated hydrogen, there are the following problems: First, with the growing awareness of environmental protection, more and more domestic urban traffic uses hydrogen as a power source. At the same time, hydrogen can also be used as other chemical products The raw material, so the price of hydrogen is relatively high; the second is because hydrogen has a high combustion calorific value, and under the same temperature and the energy of the regenerative furnace delivered to the cracking furnace, the combustion air flow is small, so that the temperature difference between the upper and lower sides of the cracking furnace is large, and the produced carbon black products Unstable quality

Foreign countries impose a technical blockade on its structure and principle, and imported equipment is expensive and difficult to maintain, which poses technical problems for domestic carbon black manufacturers

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