Combustion device of petroleum coke slurry

Abstract

The invention relates to a combustion device of petroleum coke slurry, comprising a heat accumulation cavity, a fuel oil / gas duty nozzle, a petroleum coke slurry atomizing nozzle, an inner combustionair nozzle and an outer combustion air nozzle. The heat accumulation cavity is arranged in a hearth; the fuel oil / gas duty nozzle is arranged on a furnace wall and communicated with the heat accumulation cavity; the petroleum coke slurry atomizing nozzle, the inner combustion air nozzle and the outer combustion air nozzle which are communicated with the heat accumulation cavity are sequentially sleeved at the outer side of the fuel oil / gas duty nozzle from interior to exterior; and an inner combustion air swirl generator and an outer combustion air swirl generator are respectively arranged inthe inner combustion air nozzle and the outer combustion air nozzle. Aiming at the characteristics of combustion difficulty and high combusting NOx contents of the petroleum coke slurry, the inventionadopts an atomizing mode to improve the temperature increase rate of petroleum coke particles; an ignition heat lowering technology realizes the stable ignition and the low-pollution combustion of the petroleum coke slurry; and the invention has the advantages of strong pertinence, convenience, adjustment, mature technology, high combustion efficiency and convenient processing and manufacture.

Description

technical field [0001] The invention belongs to a combustion device in the technical field of thermal energy and power engineering, and in particular relates to a petroleum coke slurry combustion device. Background technique [0002] Petroleum coke is a product converted from heavy oil produced by crude oil distillation or petroleum asphalt, residual oil, and tar through coking treatment (thermal cracking process). It is a by-product of petroleum deep processing. In recent years, the delayed coking process has developed rapidly, and the deep processing of petroleum has become one of the main technical routes of the petrochemical industry. Therefore, the output of petroleum coke has increased rapidly. [0003] Petroleum coke is a high calorific value, high sulfur content, low ash, low volatile product. The content of fixed carbon in petroleum coke is as high as 80% to 90%, but the volatile content is only about 10%. The fuel properties are very close to anthracite. The fuel...

AI Technical Summary

Problems solved by technology

However, due to the low volatile content of petroleum coke slurry, it is difficult to ignite and stabilize combustion at the initial stage of combustion; the content of sulfur oxides produced after combustion of petroleum coke slurry is high, and the load on the desulfurization device increases; the nitrogen content in petroleum coke slurry is very high. High, a large amount of NOx will be produced after combustion, which cannot meet the national environmental protection requirements; the combustion temperature of petroleum coke slurry is low, and the unburned carbon in the combustion products is relatively high

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