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Emergency nitrogen charging-forced ventilation combined explosion-proof system and method based on real-time monitoring of acetylene gas in high-dust environment

A technology of forced ventilation and acetylene gas, which is applied in the field of solid waste resource utilization, can solve the problems of lack of simple, economical and accurate dangerous gas concentration control methods, safety risks, etc., meet the requirements of explosion protection, high degree of automation, and solve safety problems Effect

Inactive Publication Date: 2020-11-10
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To sum up, in the process of resource utilization of carbide slag, the potential safety hazards caused by the escape and enrichment of acetylene gas have not been focused on, and there is a lack of simple, economical, accurate, and easy-to-operate dangerous gas concentration control methods to reduce safety risks. The invention mainly aims at the above problems and seeks a comprehensive solution that is easy to establish, high in sensitivity and strong in engineering applicability

Method used

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  • Emergency nitrogen charging-forced ventilation combined explosion-proof system and method based on real-time monitoring of acetylene gas in high-dust environment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 As shown, an emergency nitrogen filling-forced ventilation combined explosion-proof system based on real-time monitoring of acetylene gas in a high-dust environment, the system includes: a graded dust removal subsystem, a gas monitoring subsystem, a nitrogen filling subsystem and a ventilation subsystem;

[0052] The graded dust removal subsystem is connected to the raw material / production area through pipelines, and the gas monitoring subsystem is connected to the graded dust removal subsystem through pipelines; the gas monitoring subsystem is respectively connected to the nitrogen charging subsystem and the ventilation subsystem; the nitrogen charging subsystem and the ventilation subsystem They are respectively connected to the raw material / production area through gas pipelines;

[0053] The classified dedusting subsystem filters the dust-containing acetylene gas in the raw material / production area, and the dust-containing acetylene gas enters the ga...

Embodiment 2

[0059] Such as figure 1 Shown, a kind of emergency nitrogen filling-forced ventilation combination explosion-proof method based on real-time monitoring of acetylene gas in high dust environment, described method comprises the following steps:

[0060] 1) The graded dust removal system filters raw materials and dust-containing acetylene gas at the production site for solid particles, and converts the gas concentration detected on site into corresponding standard signals for unified display management and control through a fixed gas detector;

[0061] According to different particle sizes, the classified dust removal system is generally 3-4 grades, and the minimum particle size of the filtered dust particles is 1 micron;

[0062] The graded fixed acetylene gas detector is generally an infrared type or a flame type, and the detection range of acetylene gas is 0-20%, and the detection accuracy is 0.01% when the concentration of acetylene gas is greater than 2%, and 0.005% when the...

Embodiment 3

[0071] Real-time monitoring of acetylene gas-the combined explosion-proof system detects the concentration of acetylene gas in the environment through graded dust removal, and the feedback result is 0.305%. At this time, nitrogen gas is continuously and slowly fed through the system control, and the ventilation rate is 1 / of the total space volume per minute. 100, so that the concentration of acetylene gas in the system is basically maintained, and the rate of gas discharge in the environment is basically consistent with the rate of nitrogen gas.

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Abstract

The invention discloses an emergency nitrogen charging forced ventilation combined explosion-proof system and method based on real-time monitoring of acetylene gas in a high-dust environment. The system comprises a graded dust removal subsystem, a gas monitoring subsystem, a nitrogen charging subsystem and a ventilation subsystem, wherein the graded dust removal subsystem is communicated with a raw material / production area through a pipeline, and the gas monitoring subsystem is communicated with the graded dust removal subsystem through a pipeline; the gas monitoring subsystem is in communication connection with the nitrogen charging subsystem and the ventilation subsystem separately; and the nitrogen charging subsystem and the ventilation subsystem are respectively communicated with the raw material / production area through gas pipelines. According to the present invention, the accurate real-time monitoring and rapid control of the acetylene gas content can be realized, so that the potential safety hazard of acetylene gas in the carbide slag resource utilization process is solved.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of solid waste, and in particular relates to an emergency nitrogen filling-forced ventilation combined explosion-proof method based on real-time monitoring of acetylene gas in a high-dust environment. Background technique [0002] Calcium carbide slag is the industrial waste produced in the process of preparing acetylene by the reaction of calcium carbide and water. my country discharges about 30 million tons per year. The main component is calcium hydroxide, with a content of 80% to 90%. It has great reuse value and can be used It can be used in cement, building materials, etc., or used as a desulfurizer or sintered to prepare activated calcium oxide after separation and purification. In recent years, with the increasingly severe environmental protection situation and the limited mining of natural limestone, many domestic research institutions, universities and enterprises have carrie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N21/3504G01N31/10
CPCG01N21/3504G01N31/10G01N33/0047G01N33/0063
Inventor 李会泉邢岗郭茂盛李少鹏朱干宇常永生王兴国颜坤
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI