A resistance-reducing online cleaning method based on a final cooling tower

Abstract

The invention discloses a drag-reducing online cleaning method based on a final cooling tower, which belongs to the field of final cooling towers. The online self-cleaning of blocked screen holes is carried out by creatively adding elastic drag-reducing orifice plates to the existing partitions. , it inflates the elastic drag-reducing orifice by inflating the air cylinder first, and the expanded elastic drag-reducing orifice can not only control the flow of cooling water through the screen holes, but also divert the cooling water to improve the shower performance As a result, when the sieve holes on a certain layer of partitions are blocked, coke oven gas cannot continue to rise, so a large amount of accumulation under this partition will increase the heat below this partition, and the heat will make the shape The memory air baffle deforms and bends, the air outlet of the jet pipe opens, and the elastic drag-reducing orifice gradually shrinks from the expanded state, making the aperture of the sieve hole larger, so that the blockage can easily fall down, and the gas is also sprayed to the sieve hole below On, to further improve the cleaning effect.

Description

technical field [0001] The invention relates to the field of final cooling towers, in particular to a drag-reducing online cleaning method based on final cooling towers. Background technique [0002] my country is the country with the largest coke output in the world. In 2010, the coke output was 380 million tons, accounting for about 60% of the world's total coke output. The amount of coke oven gas produced is huge. How to use it efficiently and rationally is related to environmental protection, comprehensive utilization of resources, and A major issue in energy conservation and emission reduction. Taking China's coke output in 2010 as an example to estimate, in 2010, the associated coke oven gas produced by China's coking industry, except for 40% to 45% of which was used to ensure the temperature of the coke oven, had a total surplus of coke oven gas of 85 billion m3, exceeding The total calorific value of the West-to-East Gas Pipeline Project and the efficient utilization...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the object of the present invention is to provide a drag-reducing online cleaning method based on the final cooling tower, by creatively adding an elastic drag-reducing orifice on the existing partition to clean the clogged screen The hole is self-cleaning online. It expands the elastic drag-reducing orifice by first inflating the air cylinder. The expanded elastic drag-reducing orifice can not only control the flow of cooling water through the screen hole, but also divert the cooling water. In order to improve the effect of showering, when the sieve holes on a certain layer of partitions are clogged, coke oven gas cannot continue to rise, so a large amount of accumulation under this partition will cause the heat below this partition to rise. High, the heat makes the shape memory air baffle deform and bend, and the air outlet of the air injection pipe is opened, so that the gas in the inflatable cylinder will be ejected downward from the air injection pipe, and the elastic resistance reducing orifice will gradually shrink from the expanded state, making the sieve hole The hole diameter becomes larger so that the blockage can fall easily, and at the same time, the gas sprayed downward from the air jet pipe is also sprayed on the screen hole below, which further improves the effect of cleaning the blockage

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