Raw coke oven gas high-temperature dust removal process and device

Abstract

The invention discloses a raw coke oven gas high-temperature dust removal process and device. Semi-coke is used as a filter medium for a dust remover. Pyrolysis dust-containing raw coke oven gas is discharged from pyrolysis equipment and then directly connected to the bottom of a fixed bed / granular bed raw coke oven gas high-temperature dust remover through a raw coke oven gas pipeline, and purified raw coke oven gas is discharged from an outlet in the upper portion of the dust remover to enter a downstream procedure after passing through the filter material and filtering dust in the raw cokeoven gas from bottom to top. In the whole filtering and dedusting process, the pipeline and the dust removal device are kept in a high-temperature state to prevent tar precipitation. And the filteredand saturated semicoke filter material is discharged from the bottom of the dust removal device through the discharging device and falls into a coke quenching waste heat recovery device to be cooled.The dust removal device is composed of a dust remover body, a semi-coke preheater and a discharging lock hopper. The invention has the characteristics of accessible filter medium, simple structure, convenient operation, stable operation, low operation cost, environment friendliness, energy saving and the like.

Description

Technical field [0001] The invention belongs to the technical field of clean energy utilization, and specifically relates to a high-temperature dust removal process and device for raw gas. Background technique [0002] Coal pyrolysis is the core technology for the utilization of coal. Its principle is to separate the volatile matter and fixed carbon in coal into gas-liquid two phases through the dry distillation of coal, and the gas phase can be divided into oil phase ( Oil products) and gas phase products (gas or syngas). After the dry distillation, the gas is cooled down and before the oil is collected, there is often a large amount of entrainment of tiny dust. If this part of dust enters the oil phase as the temperature drops, it is difficult to separate effectively because the specific gravity is too close. Therefore, in terms of technical product quality goals, gas is required to remove entrained dust at high temperature. The same problem also exists in the pyrolysis of s...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of incomplete dust separation, unstable operation, easy precipitation of tar and large amounts of dust caused by temperature fluctuations in the existing raw gas dedusting solutions, the present invention provides a Stable and reliable operation and simple operation of fixed bed raw gas high temperature dedusting process and device

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