A positive pressure air system pid process control flow

Abstract

The invention relates to a PID process control process of a positive pressure air system in the field of energy saving and consumption reduction. The entrance of the furnace body is respectively equipped with multiple sets of burners, multiple sets of open flame devices, multiple sets of flame detection devices and multiple sets of ignition devices. Marked as 1#, 2#... The burner is equipped with a combustion-supporting air system, and the burner is also equipped with a main gas pipeline. Main pipe manual regulating valve, main pipe pneumatic regulating valve, main pipe check valve, branch pipe manual regulating valve, branch pipe pneumatic regulating valve, nitrogen gate valve, nitrogen ball valve, nitrogen solenoid valve, drain valve, drain ball valve and drain solenoid valve; the invention provides a A new process flow, through which the efficient, automatic and real-time baking of the alloy can be realized, and the waste heat of the exhaust gas can be reasonably used to avoid air pollution, improve work efficiency, and reduce secondary pollution.

Description

technical field [0001] The invention relates to the field of energy saving and consumption reduction, in particular to a PID process control flow. Background technique [0002] Iron and steel is the basic industry of the national economy. Under the situation of the rapid development of the national economy, the output of crude steel in my country has been continuously increasing in recent years. In 2014, the annual output of crude steel in my country reached 823 million tons, and the export will reach more than 80 million tons, which is equivalent to U.S. annual crude steel production. Alloy is an important raw material required in the steelmaking process. The moisture content in the alloy directly affects the quality of molten steel and the tapping temperature. The alloy material is used after baking. On the one hand, the role of baking is to remove moisture and reduce the temperature of molten steel. On the other hand, it can reduce the temperature drop of molten steel dur...

AI Technical Summary

Problems solved by technology

The commonly used alloy baking device is still relatively backward. Such a baking device leads to defects such as large temperature difference of the alloy in the alloy silo, uneven baking, insufficient gas combustion, serious environmental pollution, etc., and is prone to flameout, causing gas leakage. Security risks

If highly toxic gases such as converter gas and blast furnace gas are used as the combustion medium, the safety problem becomes more prominent. More importantly, because the flame directly bakes the alloy, the alloy material is heated unevenly and the temperature difference is large, and the alloy material around the flame is easy to burn. Melting and agglomeration lead to poor feeding, and the alloy material far away from the flame cannot be effectively heated, so the water in it cannot be effectively removed; and the work efficiency is low, which is prone to secondary pollution, which is not conducive to long-term and stable removal. Production

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