Antisludging agent for low temperature flue gas heat exchange equipment of boiler and preparation method thereof

Abstract

The invention provides an antisludging agent for low temperature flue gas heat exchange equipment of a boiler and a preparation method thereof. The preparation method comprises: putting a solvent, 1 / 2 mass of polymerization inhibitor and 1 / 2 mass of metal passivator in a container, stirring the matters at a constant temperature until the matters are completely dissolved; adding a calcic detergent dispersant and an organic dispersant according to a proportion, stirring the mixture at a constant temperature until the mixture is completely dissolved; and finally, adding the 1 / 2 mass of polymerization inhibitor, the 1 / 2 mass of metal passivator and a diamine acid acceptor according to a proportion, and stirring the mixture at a constant temperature until the mixture is completely dissolved to obtain the antisludging agent for low temperature flue gas heat exchange equipment of boiler. The antisludging agent has the characteristics of little feeding dosage, good economical efficiency and practicability, and high scale inhibition rate, and the like, and the antisludging agent can be used for inhibiting and slowing the coking and scaling problems of low temperature flue gas in the heat exchange equipment, so that the antisludging agent has high generalization and application values and a brilliant market prospect.

Description

technical field [0001] The invention relates to a scale inhibitor, in particular to a scale inhibitor used for boiler flue gas heat exchange equipment and a preparation method thereof. Background technique [0002] The long-term corrosion of heat exchange equipment or chimneys from the gas-fired boilers of the Iron and Steel Group has caused serious problems. Gas and acidic substances, after adding a heat exchanger in the flue, the flue gas flow rate will slow down, and it is easy to coke and scale on the surface of the heat exchanger, which seriously affects the heat exchange efficiency of the heat exchanger, especially in areas with high coke oven gas content Boiler, when the unburned organic matter in the coke oven gas is combined with sulfite and trace dust, it will coke and be serious enough. From the perspective of fouling composition, it is composed of organic matter and inorganic matter, so the cleaning of the heat exchanger is cumbersome and the operation cycle of t...

AI Technical Summary

Problems solved by technology

[0002] The long-term corrosion of heat exchange equipment or chimneys from the gas-fired boilers of the Iron and Steel Group has caused serious problems. Gas and acidic substances, after adding a heat exchanger in the flue, the flue gas flow rate will slow down, and it is easy to coke and scale on the surface of the heat exchanger, which seriously affects the heat exchange efficiency of the heat exchanger, especially in areas with high coke oven gas content Boiler, when the unburned organic matter in the coke oven gas is combined with sulfite and trace dust, it will coke and be serious enough. From the perspective of fouling composition, it is composed of organic matter and inorganic matter, so the cleaning of the heat exchanger is cumbersome and the operation cycle of the device Significantly shortened, increased energy consumption, and significantly reduced economic efficiency. It can be seen that the coking and scale inhibition of heat exchange equipment has become the main problem restricting the long-term operation of the device.