Gas mixing route acetylene black cracking furnace

Abstract

The invention discloses a gas mixing route acetylene black cracking furnace. The gas mixing route acetylene black cracking furnace comprises a cracking furnace body, wherein the cracking furnace bodyis divided into a gas coke removal section, a cracking primary reaction section, a cracking secondary reaction section, a cooling section and a remaining section from top to bottom, the top of the cracking furnace is provided with a transmission apparatus, and an inner layers of the cracking primary and secondary reaction sections, the cooling section and the remaining section are lined with a refractory material; and the transmission apparatus is a hydraulic cylinder, the hydraulic cylinder is provided with a scraper blade apparatus, a first raw material gas inlet and a second raw material gas inlet, the first raw material gas inlet is connected with an acetylene gas source, the second raw material gas inlet is connected with a mononuclear aromatics gas source, the second raw material gasinlet is provided with a flow valve, and the scraper blade apparatus and the first raw material gas inlet are respectively provided with a water cooling jacket; and the cracking primary and secondaryreaction sections are respectively provided with a thermocouple.

Description

technical field [0001] The invention relates to the field of acetylene carbon black production, in particular to a cracking furnace for acetylene carbon black with a mixed gas route. Background technique [0002] Acetylene carbon black is a carbon black produced by cracking acetylene gas at 1600°C to 1800°C in the absence of air. At present, the production scale of cracking furnaces in domestic acetylene carbon black plants is also between 500t / a and 1000t / a. This equipment was developed in the early 1980s. Although it satisfies the needs of the market to a large extent, the cost of raw material acetylene gas accounts for more than 80% of the cost of acetylene carbon black for a long time. The output is low and the labor cost is high. With the advancement of science and technology, customers urgently need cracking furnaces with large scale, energy saving, environmental protection and efficiency enhancement. At present: there is no cracking furnace with a single furnace pro...

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Problems solved by technology

[0003] (1) Limitation of single furnace capacity: Since the large amount of heat released by acetylene gas cracking is difficult to eliminate, it is generally difficult to increase the capacity of a single furnace. The water jacketed 1000t / a cracking furnace already requires a considerable amount of cooling soft water. Expanding to a water-jacketed cracking furnace greater than or equal to 2000t / a will double the production and operation costs and investment

[0004] (2) Conventional cracking furnaces use acetylene gas cracking to produce acetylene carbon black, which is greatly affected by acetylene gas (calcium carbide). For a long time, the cost of raw material acetylene gas accounts for more than 80% of the cost of acetylene carbon black, with low output and high labor costs

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