Network access system for submerged arc furnace gas pipe network and control method of network access system

Abstract

The invention provides a network access system for a submerged arc furnace gas pipe network and a control method of the network access system. The submerged arc furnace gas pipe network comprises a gas main network and a plurality of gas branch pipes connected thereto; the network access system comprises a gas return bypass pipe, a release bypass pipe, a branch pipe cut-off valve, a return bypasscut-off valve, a release bypass cut-off valve, a flow totalizer, a pressure transmitter, and an oxygen content online analyzer that are installed on each gas branch pipe. The cut-off valves are arranged before a branch line enters a network, gas bypasses are arranged between the cut-off valves and oxygen content measurement points to ensure that gas can return through the bypasses after a branch line remote control valve is cut off and ensure that the gas in the branch pipes is always in a state of flow update, and gas parameter indexes can be monitored accurately in a real-time manner beforethe gas is fed into the network to ensure that the network access gas transporting operation is performed after network access conditions are met and ensure that the quality of the network access gasmeets the requirements for methanol production; and the quantity of the network access gas is accurately metered for economic calculation.

Description

technical field [0001] The invention relates to the technical field of submerged arc furnace gas pipeline network, in particular to a network connection system and control method of submerged arc furnace gas pipeline network. Background technique [0002] In the metallurgical industrial park, the process route of using submerged arc furnace gas to produce methanol and other chemical products rationally utilizes the effective gas components CO and H2 in the submerged arc furnace gas to generate high value-added chemical products, which not only improves the submerged arc furnace The comprehensive utilization efficiency of gas resources has built a circular economy industrial chain, enhanced the market competitiveness of enterprises, and also greatly reduced the emission of wastes such as CO2 and improved the ecological environment. New technology. In the metallurgical park, there are generally many metallurgical manufacturers with submerged arc furnaces. The gas of each subm...

AI Technical Summary

Problems solved by technology

[0003] Usually, the monitoring system of the gas pipeline network is generally operated manually, and analyzers are rarely used. Generally, manual sampling and analysis are used, which lacks real-time performance and accuracy, and lacks monitoring of the quality of gas entering the network, resulting in unstable production of gas users and affecting Production Safety and Productivity

Some pipe network designs use branch pipes without a bypass system. Since the gas does not flow at the oxygen content measurement point before entering the network, the online oxygen analysis instrument is always a fixed number, which cannot reflect the real data of the gas.

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