High-low-temperature pyrolysis integrated reactor for pulverized coal and application of high-low-temperature pyrolysis integrated reactor

Abstract

The invention discloses a high-low-temperature pyrolysis integrated reactor for pulverized coal and an application of the high-low-temperature pyrolysis integrated reactor. The high-low-temperature pyrolysis integrated reactor for the pulverized coal comprises a high-temperature pyrolysis furnace and a low-temperature pyrolysis furnace, wherein a high-temperature pyrolysis chamber is defined in the high-temperature pyrolysis furnace, a plurality of radiant tubes are arranged in the high-temperature pyrolysis chamber, a first pulverized coal inlet is formed in the upper part of the high-temperature pyrolysis furnace, a first semi-coke outlet is formed in the bottom end of the high-temperature pyrolysis furnace, and a fuel inlet and a flue gas outlet which are communicated with the radiant tubes are formed in the side wall of the high-temperature pyrolysis furnace; a low-temperature pyrolysis chamber is defined in the low-temperature pyrolysis furnace, a second pulverized coal inlet is formed in the upper part of the low-temperature pyrolysis furnace, a low-temperature pyrolysis oil gas outlet is formed in the side wall of the low-temperature pyrolysis furnace, and a second semi-coke outlet is formed in the bottom end of the low-temperature pyrolysis furnace; the low-temperature pyrolysis furnace and the high-temperature pyrolysis furnace share one side wall, and a low-temperature pyrolysis oil gas channel communicating the high-temperature pyrolysis chamber with the low-temperature pyrolysis chamber is formed in the side wall. The pulverized coal treating efficiency can be increased substantially and energy consumption can be reduced by the reactor.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a pulverized coal high and low temperature pyrolysis integrated reactor and application thereof. Background technique [0002] Coal is one of the conventional resources with the most abundant proven reserves in the world. As the world's largest coal producer and consumer, my country's energy structure is characterized by rich coal, poor oil, and little gas. In my country's coal resource structure, low-rank coal with high volatile content occupies a relatively large proportion. Among them, the proven reserves of lignite are about 130 billion tons, accounting for about 12.69% of the country's proven reserves. Long-flame coal, Low-rank metamorphic bituminous coal such as non-caking coal and weakly caking coal accounts for about 42.46% of coal reserves. Low-rank coal is the product of the initial stage of coalification. Because of its characteristics of high moisture, low...

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Problems solved by technology

Because pulverized coal is prone to dust, it is flammable and explosive when accumulated, and it is difficult to comprehensively utilize it, resulting in poor sales and a large backlog

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