Self dust collection type coal pyrolysis and splitting gas production combined fuel gas power generation system

Abstract

The invention belongs to the technical field of coal pyrolysis and splitting gas production and fuel gas combustion power generation, and in particular relates to a self dust collection type coal pyrolysis and splitting gas production combined fuel gas power generation system based on a heat accumulation radiation tube heating. The system comprises a pyrolysis hopper, a first feeding device, a pyrolysis and splitting reactor, a heat accumulation type radiation tube, a thermal insulating brick wall, a communicating component, a granule bed dust collection device, a spraying tower, a fuel gas tank and a power generator set, wherein the pyrolysis and splitting reactor comprises a feeding hole, a pyrolysis chamber, a splitting chamber and a splitting gas outlet. The self dust collection type coal pyrolysis and splitting gas production combined fuel gas power generation system provided by the invention is simple in structure, convenient to operate, uniform in temperature distribution and good in heating effect; the granule bed dust collector is arranged at a pyrolysis chamber oily gas outlet; after an oily gas generated from the pyrolysis chamber is subjected to dust collection of a granule bed, a clean oily gas is fed into the splitting chamber for deep splitting, a small part of a splitting gas is fed into the radiation tube for combustion, and the reset fuel gas is fed into the fuel gas power generator set for combustion and power generation, so that the problem that pyrolysis oil contains dust is solved, and the dust collection pressure of a rear end is also alleviated.

Description

technical field [0001] The invention belongs to the technical field of coal pyrolysis and cracking gas production and gas combustion power generation, and specifically relates to a combined gas power generation system based on regenerative radiant tube heating self-dust removal type granular coal pyrolysis and cracking gas production. Background technique [0002] my country is rich in coal resources, and most of the raw coal is used for direct combustion except for coking and conversion processing. The direct combustion of coal leads to the fact that the oil and gas resources rich in coal have not been fully refined and utilized, and the thermal efficiency of direct combustion is low, which seriously damages the environment. The pyrolysis of coal is to heat coal under an inert atmosphere to produce semi-coke, gas and tar, etc. These products can be used in stages, fully extracting oil and gas resources, and improving the comprehensive utilization efficiency of coal . Coal...

AI Technical Summary

Problems solved by technology

The thermal efficiency of the external heat type is low, and the secondary decomposition of volatile products is serious; the internal heat type process overcomes the shortcomings of the external heat type, and transfers heat to the coal by means of heat carriers (solid heat carrier and gas heat carrier)

The gas heat carrier process has the disadvantages of distilled dry distillation gas, large condensation recovery system, low calorific value of gas, and difficulty in further comprehensive utilization

The solid heat carrier process has certain advantages relatively speaking, but there are many disadvantages such as complex process operation links and high manufacturing costs.

The main purpose of the existing pyrolysis furnaces is to produce oil products, but most of the pyrolysis furnaces, especially those that use pulverized coal as raw materials, contain a lot of dust in the pyrolysis oil, which makes it difficult to effectively process the pyrolysis oil. Utilization, the value of pyrolysis oil is not high, etc.

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