Device and process for improving productivity of oil and gas and efficiently recovering oil and gas

Abstract

The invention discloses a device and a process for improving productivity of oil and gas and efficiently recovering oil and gas. The device comprises a pyrolyzing furnace, a high-temperature dust catcher, an efficient filter, a high-temperature fan and an oil-gas recovery system which are sequentially connected, wherein a coarse powder coke outlet of the high-temperature dust catcher and a fine powder coke outlet of the efficient filter are respectively connected with a powder coke utilization system through a valve; high-temperature raw coke oven gas produced by the pyrolyzing furnace is subjected to preliminary dust removal by the high-temperature dust catcher and deep dust removal by the efficient filter, then is fed into the oil-gas recovery system by the high-temperature fan so that oil and gas are recycled; and powder coke filtered out of the high-temperature raw coke oven gas is fed into the powder coke utilization system; and the high-temperature fan is located between the pyrolyzing dust catcher and the oil-gas recovery system to ensure negative-pressure pyrolysis conditions and meet gas dust-removal demands, and moreover the high-temperature fan is also taken as a power source of the oil-gas recovery system; and under the negative-pressure pyrolysis conditions, effects of high tar yield and good quality are achieved, and the best process for oil-gas recovery is satisfied.

Description

technical field [0001] The invention relates to a device and method for coal pyrolysis and oil gas recovery, in particular to a device and process for increasing oil and gas yield and efficiently recovering oil and gas. Background technique [0002] At present, the pyrolysis process mainly uses 20-80mm block materials as raw materials, and adopts the internal heating type vertical furnace pyrolysis process, the tar yield is low, and the gas quality is not high. In the field of coal processing and transformation, pulverized coal, which accounts for 70-80% of coal mining, is mainly used for combustion, and the energy conversion efficiency is low, resulting in a great waste of energy. The pyrolysis product condensation recovery system mainly adopts the water washing process, which not only has a complicated process, a large waste water output, high energy consumption and cost, but also a low oil yield in the product. [0003] An effective way to increase the tar yield is to re...

AI Technical Summary

Problems solved by technology

However, in the existing negative pressure pyrolysis process, most of the vacuum devices that provide negative pressure are located after the pyrolysis product recovery device, which has a great impact on the effective recovery of pyrolysis products.

On the one hand, the vacuum device that provides negative pressure must have a sufficiently high wind pressure to ensure the negative pressure of the pyrolysis device, but the stability of the operating process (such as the temperature, pressure and flow of the system) is difficult to maintain. On the other hand, the larger The degree of vacuum will cause the tar products in the product recovery system to fail to condense sufficiently and be taken out together with the gas. At the same time, the condensed gas will be sucked out again under the push of negative pressure, resulting in a low yield of oil and gas products. Due to the operating process unstable, the quality of pyrolysis gas and tar is difficult to guarantee

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