Washing and cooling system for bottom of gas holder

Abstract

The invention discloses a washing and cooling system for the bottom of a gas holder, which comprises a feed water sprinkling device and a drainage device, wherein, the feed water sprinkling device comprises a feed water header pipe and a washing pipe communicated with the feed water header pipe and arranged above the bottom plate of the gas holder, and a sprinkling nozzle is distributed on the washing pipe; and the drainage device comprises a drainage pipe communicated with a drain outlet of the gas holder and a sedimentation tank equipped with an overflow vent, the drainage pipe extends intothe sedimentation tank and the level height of an orifice is lower than that of the overflow vent. In the invention, the bottom plate of the gas holder can be washed in a spraying manner periodicallyby the feed water sprinkling device, thus effectively avoiding sludge deposition of the bottom plate of the holder and improving the working environment around the bottom plate of the holder; and meanwhile spray water has effects of cooling and washing converter gas in the holder, thus being beneficial to prolonging the service life of a rubber membrane and lowering dust content in gas.

Description

technical field [0001] The invention relates to an additional cleaning system for a gas cabinet, in particular to a flushing and cooling system for the bottom of a gas cabinet. Background technique [0002] Existing rubber-membrane-sealed gas holders (commonly called Wiggins cabinets) are generally used to store converter gas (and other gases as well). The converter gas stored in the gas holder generally has the following characteristics: [0003] 1) It is saturated in the cabinet; [0004] 2) The temperature is higher, generally between 40 and 70 °C, and the dry dust removal may be higher; [0005] 3) The content of solid impurities such as dust is high, which can reach 150mg / m3; [0006] This is determined by the process flow of converter gas recovery. The high-temperature converter gas comes out of the converter, and after recovering part of the heat energy through the waste heat boiler, it enters the primary dust removal process. The primary dust removal is mainly div...

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Problems solved by technology

[0004] 2) The temperature is higher, generally between 40 and 70 °C, and the dry dust removal may be higher;

[0009] 1) After the silt accumulates for a long time, it becomes slushy, or even condenses into mud, which is difficult to wash;

[0010] 2) Concentrated flushing takes away a large amount of impurities in a short time, and when discharged through the drain, it is easy to cause blockage of the drain and accumulation of sludge at the bottom of the drain;

[0011] 3) In addition to the low frequency of dust removal in iron and steel enterprises and the non-standard dust removal system, there is a large amount of silt deposits around the bottom plate of the converter gas cabinet without exception. In severe cases, the thickness of silt deposits will reach more than 300mm in one or two years.

[0012] In short, the sludge deposition brings great inconvenience to the maintenance of the gas cabinet, and regular cleaning is also quite troublesome. At the same time, it is easy to cause corrosion of the T baffle stand and reduce the service life of the gas cabinet. In addition, the gas storage temperature in the cabinet is high, which is easy Cause rubber membrane aging, affect the performance of rubber membrane

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