Special scale inhibitor for TRT

Abstract

The invention discloses a special corrosion and scale inhibitor for TRT, which is mainly used for the corrosion prevention of blast furnace gas excess-pressure turbine rotor blades. The special corrosion and scale inhibitor for TRT contains organic heterocyclic compounds, efficient corrosion inhibitor, surfactant, scale inhibition dispersant and water, wherein the weight percentages of the components are: 15 to 25 percent of organic heterocyclic compounds, 20 to 45 percent of efficient corrosion inhibitor, 2 to 5 percent of surfactant, 10 to 35 percent of scale inhibition dispersant and the balance being water. After the corrosion and scale inhibitor is added to a blast furnace gas pipeline, the corrosion and scale inhibitor can be heated and vaporized into gas by the temperature of gas so as to enter a TRT turbine device along the gas pipeline. Under the condition of continuous addition, the corrosion and scale inhibitor can prevent the generation of TRT blade salt deposit and attach a smooth protective film to the surface of a blade, so as to separate the blade from the outside, thereby playing a role in protecting the blade and prolonging the life span of equipment.

Description

technical field [0001] The invention relates to a chemical reagent, in particular to a special corrosion and scale inhibitor for TRT. Background technique [0002] TRT is a very good energy-saving device for iron and steel enterprises. It is an energy recovery unit that uses the residual pressure on the top of the blast furnace to guide the gas into the turbine to expand and do work, and drives the generator to generate electricity. The crystallized red and white substances on the turbine rotor blades of the TRT run for a month or two. In serious cases, the thickness can reach 20mm, and the scaling is uneven. When the rotor is running at a speed of 3000r / min, severe vibration occurs, which affects the normal operation of the unit. run. [0003] According to the dry and wet conditions of the incoming gas, TRT is mainly divided into: wet type, dry type, and wet and dry dual-purpose type. Wet TRT is used for energy recovery of blast furnace gas in wet dedusting process. The ...

AI Technical Summary

Problems solved by technology

Compared with wet dust removal, dry dust removal has the advantages of high dust removal efficiency, small pressure loss, and high net gas temperature. Therefore, dry TRT has been rapidly used in major iron and steel enterprises in recent years, but the fouling problem of turbine rotor blades still exists. , and it is more difficult to handle than the wet type, and the way of high-pressure water washing is still used now, but the descaling effect is not good, and it will cause great damage to the equipment