Umbrella-shaped gas collecting structure

Abstract

The invention relates to an umbrella-shaped gas collecting structure. The umbrella-shaped gas collecting structure comprises an upper-section tubular structure and a lower-section umbrella-shaped structure, wherein the upper-section tubular structure consists of a first section, an intermediate section and a tail section which are sequentially connected from top to bottom; the first section is hung on a deep coal box; the first section, the intermediate section and the tail section are connected by a clamping groove quick coupling; the tail section is connected with a lifting hook at the upper part of the lower-section umbrella-shaped structure through a lifting lug; the lower-section umbrella-shaped structure consists of multiple sections of gas collecting umbrellas; a plurality of umbrella skirts expanding towards the lateral lower direction are arranged on each section of gas collecting umbrella along the axial direction; annular clearances are formed between the umbrella skirts and the corresponding gas collecting umbrella main body; the gas collecting umbrellas of all sections are connected by the lifting lugs and the lifting hooks. According to the umbrella-shaped gas collecting structure disclosed by the invention, the structure is reasonable, the conduction area of gas is large, raw coal gas generated by a dry distillation section can be timely exported, and pulverized coal can be prevented from entering into a gas collecting channel; the umbrella-shaped gas collecting structure is of a multi-segment and multi-section structure, is quick and reliable in connection and is very convenient in manufacturing, mounting and replacing; in addition, the umbrella-shaped gas collecting structure also has the characteristics of high temperature resistance and corrosion resistance, and sufficiently meets the demand of exporting of the raw coal gas.

Description

technical field [0001] The invention relates to a gas collection device in a carbonization chamber of a low-level pulverized coal carbonization furnace, in particular to an umbrella-shaped gas collection structure for collecting and leading out raw coal gas. Background technique [0002] In the production process of low-grade pulverized coal retort furnace, a large amount of raw gas is produced in the retort section of the carbonization chamber. Due to the poor air permeability of pulverized coal, whether the large amount of raw coal gas generated in the retort section can be exported in time becomes the core that determines whether the retort furnace can be successfully produced. question. In the process of exporting raw coal gas, it is necessary to ensure sufficient conduction area and reduce the gas flow rate at the conduction port, so as to prevent a large amount of dust from entering the gas gathering system with raw coal gas and affecting the quality of raw coal gas an...

AI Technical Summary

Problems solved by technology

Since the gas gathering device has to work under the high-temperature and high-corrosion working conditions of the retort section, there are high requirements for its structural performance, and the existing gas-collecting device cannot meet the requirements for the export of raw gas from the retort section of the externally heated pulverized coal retort furnace. need

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