Blow-off valve in carbon black production line

Abstract

The invention relates to the technical field of blow-off valves, in particular to a blow-off valve in a carbon black production line. The blow-off valve comprises a valve body, a valve cover, a driving mechanism and an air adjusting mechanism. The blow-off valve is used for a carbon black production line, during normal production, waste gas is conveyed to a desulfurizing tower through a pipeline for treatment, and at the moment, the device must be closed so as not to leak waste gas to the outside; when the pressure is too high due to unstable production in a box body, the blow-off valve can timely relieve the pressure to prevent a bag filter from being damaged; and during shutdown maintenance, the blow-off valve can be automatically opened to discharge all waste gas in the box body and keep the box body communicated with the outside. The sealing effect is good, and the tail gas leakage problem is effectively prevented; and the pressure in the valve body is utilized to realize automatic adjustment of pressure relief or sealing. The blow-off valve is simple in structure, easy to match, capable of achieving rapid and automatic blow-off, easy to maintain and capable of guaranteeing long-time stable operation.

Description

technical field [0001] The invention relates to the technical field of relief valves, more specifically, to a relief valve in a carbon black production line. Background technique [0002] At present, most of the waste gas generated in chemical production is discharged into the air through high-altitude chimneys, which does not meet environmental protection requirements. Therefore, the waste gas needs to be treated and discharged in an orderly manner; during the waste gas treatment process, fluctuations will inevitably occur in the device, and when the pressure is too high, it will It will cause damage to the equipment, so a pressure relief device is often installed in the exhaust gas pipeline to protect the normal and safe operation of the system. [0003] In the carbon black production line, the waste gas from the main bag, waste bag, main vein, and waste vein is transported to the desulfurization tower for desulfurization and denitrification treatment and then discharged i...

AI Technical Summary

Problems solved by technology

The existing relief valve can automatically release pressure, but it is inconvenient to overhaul

And because it is sealed by its own weight, due to the fluctuation of the pressure in the system, the force of pressing the packing will decrease, resulting in poor sealing and leakage

Images