Three-section type overhead combustion chamber carbon black cracking furnace

Abstract

The invention relates to a three-section type overhead combustion chamber carbon black cracking furnace. A vertical furnace body comprises a heat exchange and heat storage section (8), a heat storage cracking section (9) and a supporting collection section (10) from top to bottom, wherein a tip cone cavity (7) is formed in the top part of the furnace body; a heating combustion chamber, a natural gas inlet and a flushing pipe orifice are distributed at the top part of the furnace body; and the flow directions of two gas flows are consistent. The three-section type overhead combustion chamber carbon black cracking furnace is convenient to operate and maintain, heat storage sticks at the upper part of a heat storage furnace become a high-temperature area of the furnace body, the temperature of cracking natural gas entering from the top part is low, the natural gas is quickly preheated in the high-temperature area, and through the arrangement, the temperature change of the natural gas during cracking is very narrow, and the heat storage temperature can be appropriately raised, so that the heat storage-cracking switching cycle is longer, the amount of treated natural gas is greater, and the productivity is improved to ensure that the product quality is stable and the quality is promoted.

Description

technical field [0001] The invention relates to international patent classification C09C1 / 50 furnace method carbon black technology or device, especially a three-stage overhead combustion chamber carbon black cracking furnace. Background technique [0002] In the known technology, semi-reinforcing carbon black semi-reinforcing purpose furnace black; The diameter is 61-100nm, which can endow the rubber with high elongation, low heat generation, high elasticity and good aging resistance, etc. It is suitable for natural rubber NR and vulcanized rubber SR, and it is suitable for both nitrile rubber NBR and neoprene CR Reinforcement and filling function, mostly used in carcass buffer rubber and various rubber products for cord rubber. [0003] Thermal cracking carbon black is produced by cracking natural gas in isolation from air at 1000 to 1300 °C. The carbon black cracking furnace is a key equipment in the production of thermal cracking carbon black. The equipment uses natura...

AI Technical Summary

Problems solved by technology

[0013] At present, conventional natural gas carbon black cracking furnaces such as attached figure 2 As shown, natural gas enters the furnace from the middle, and it will be cracked rapidly under the condition that the natural gas is not preheated to a high enough temperature, resulting in cracking while burning, and the output of a single furnace is low. and natural gas raw material waste

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