Process for on-line cleaning to double rotational flow gas burner

Abstract

The invention discloses a process for on-line cleaning to a double rotational flow gas burner. The process comprises the following steps: A), determining a purging medium; B), determining purging loops and the quantity thereof before the burner; C), distributing and determining the quantity of the purging branch pipe loops of a swirl plate spray nozzle set inside the burner; D), determining the quantity N of the purging branch pipes of a swirl plate spray nozzle of the burner according to the quantity N of swirl plates, and then accessing N spray nozzles, so as to form a spray nozzle set purging loop component; E), selecting the model of and making a swirl plate purging spray nozzle of the burner; F), determining the fixing way of the swirl plate purging spray nozzle of the burner and a pipeline; G), controlling and designing of the valve of a purging pipeline; and H), running test: 1, nitrogen purging; and 2, water purging. The process provided by the invention has a reasonable structure, can be used for on-line cleaning to the blockage of the swirl plates of the double rotational flow gas burner, can enable the continuous operating period of the burner to be prolonged greatly, and prolongs the service life of the double rotational flow gas burner; and on-line running and operation are simple, and system maintenance is small.

Description

technical field [0001] The invention belongs to the technical field of boilers, and in particular relates to an online cleaning process of a double swirl gas burner. Background technique [0002] At present, double swirl gas burners are widely used in full-fired gas boilers and mixed-fired gas boilers. Due to the relatively simple structure of this type of burner, the degree of mixing of combustible gas and air is high, the ignition is stable, the power is large, and the combustion efficiency is high. It is relatively fixed and cannot be adjusted by the user. Therefore, this type of burner is only suitable for burning relatively clean gas fuels; the main types of fuels are: blast furnace gas, coke oven gas and converter gas. In actual use, we found that due to various factors, the above-mentioned fuels have the following two types of outstanding problems: one is that the swirl plate on the gas side is seriously blocked; Restriction, boiler output decline, in serious cases ...

AI Technical Summary

Problems solved by technology

Due to the relatively simple structure of this type of burner, the degree of mixing of combustible gas and air is high, the ignition is stable, the power is large, and the combustion efficiency is high. It is relatively fixed and cannot be adjusted by the user. Therefore, this type of burner is only suitable for burning relatively clean gas fuels; its fuel types mainly include: blast furnace gas, coke oven gas and converter gas

In actual use, we found that due to various factors, the above-mentioned fuels have the following two types of outstanding problems: one is that the swirl plate on the gas side is seriously blocked; Restrictions and reduction of boiler output will affect the safe and stable operation of the boiler in severe cases, causing many users to be forced to shut down frequently in a short period of time, requiring a lot of manual labor to enter the furnace to clean the burners. At the same time, due to severe corrosion, the service life of the burners is shortened. Need to replace the burner frequently, resulting in high cost of spare parts

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