Adjustable type petroleum coke powder strengthening and burning device

Abstract

The invention relates to an adjustable type petroleum coke powder strengthening and burning device which comprises a high-temperature heat storage cavity and an adjustable type multi-stage burner. Aiming at the characteristics of low volatile component content and high burning NOx content of the petroleum coke powder, the device adopts a method for combining techniques of strengthening the heating-up speed of the petroleum coke powder, reducing the ignition heat, and the like so as to achieve the stable ignition and low-pollution burning of the petroleum coke powder. The depth of both the high-temperature heat storage cavity and a flaring structure of a central pipe for inserting in a hearth can be adjusted so as to adapt to the influence of the load change of a burning device. The device has strong pertinence and has the characteristics of convenience, adjustment, mature technology, high burning efficiency and convenient processing and manufacturing.

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 an adjustable petroleum coke powder intensified 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. In 2001, my country's delayed coking production capacity was 2164*10 4 t / a, 2930*10 in 2003 4 t / a, 3725*10 in 2004 4 t / a, 4245*10 in 2005 4 t / a. [0003] Petroleum coke has the characteristics of high calorific value, high sulfur content, low ash and...

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Problems solved by technology

Combustion is a reaction process under the comprehensive control of physical and chemical effects. The main difficulty in the combustion of petroleum coke powder is the low volatile content, so 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 is relatively high. The load on the desulfurization device increases; due to the high reaction temperature at the initial stage of combustion, the possibility of coking in the combustion device is relatively high; the nitrogen content in petroleum coke is high and the combustion temperature is high, and a large amount of NOx will be generated after combustion, which cannot meet the national environmental protection requirements Required indicators; petroleum coke has high carbon content, and the unburned carbon in combustion products is relatively high

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