Scale inhibitor for inhibiting scale formation on flue gas turbine blade

Abstract

The invention provides a scale inhibitor for inhibiting scale formation on a flue gas turbine blade. The scale inhibitor comprises the following components by mass percentage: 20%-30% of aqua ammonia, 20-30% of a hydrazine hydrate aqueous solution, 10-20% of an alkali metal hydroxide, and the balance deionized water. The aqua ammonia concentration is 25-37%, the concentration of the hydrazine hydrate aqueous solution is 40-80%, and the alkali metal hydroxide can be sodium hydroxide or potassium hydroxide. With application of the scale inhibitor, the formation of scale in a flue gas turbine can be effectively reduced, a series of scale removal problems after the flue gas turbine is scaled are reduced or eliminated, and economic losses caused by equipment damage and non-scheduled work stopping are reduced.

Description

technical field [0001] The invention relates to an antiscaling agent for inhibiting scaling of flue gas turbine blades, in particular to an antiscaling agent for inhibiting scaling of flue gas turbine blades in a catalytic cracking energy recovery unit. Background technique [0002] The flue gas turbine in the catalytic cracking unit of an oil refinery is one of the core equipment of the unit, and it is also one of the equipment with a high failure rate. Through the flue gas turbine, the pressure energy and temperature energy of this part of the high-temperature flue gas are converted into mechanical energy, and external work is done to achieve the purpose of recovering energy and reducing the energy consumption of the device. It plays a decisive role in the economic benefits of the catalytic cracking unit and even the operation of the entire refinery. role. The energy of the flue gas can not only drive the main fan at full load, but also send electricity to the grid. In r...

AI Technical Summary

Problems solved by technology

The amount of scale inhibitor added is 1-20% of the dust content in the flue gas. This solid powder scale inhibitor will not only increase the dust content in the flue gas, but also increase the wear of the hood blades.

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