Chemical additive for coal-fired boiler descaling and energy-conservation

Abstract

The invention discloses a chemical additive for descaling and energy saving of coal-fired boilers. KNO3, NaNO3, Na2CO3, NaCl, Fe2O3, CaO, epoxy resin, and catalyst are weighed in proportion, crushed to about 20 mesh powder, and prepared in proportion. Can. Based on chemical principles, the present invention investigates the cause of boiler coke scale, combines modern scientific and technological achievements, utilizes catalysis and oxidation methods, removes scale, prevents scale, reduces pollutant discharge, has non-toxic, harmless, non-flammable, non-explosive, and uses Simple, less dosage, quick effect, etc., can completely remove coke scale, inhibit new scale formation, direct energy saving rate of 5.5%, and comprehensive energy saving rate of 11%; reduce harmful gas emissions, which is beneficial to environmental protection, and SO2 concentration is reduced by 23.8% %, the emission is reduced by 40%; the smoke concentration is reduced by 37.2%, and the emission is reduced by 58%; the labor intensity is reduced, the maintenance cycle is extended, and the corrosion of equipment is slowed down.

Description

technical field [0001] The invention relates to a chemical preparation for boiler descaling, in particular provides a chemical additive for descaling and energy saving of a coal-fired boiler, which belongs to the technical field of boiler environmental protection and energy saving. Background technique [0002] Coke scale is a difficult problem for coal-fired enterprises, and it is also one of the main reasons for the high energy consumption of boilers. Its formation not only reduces the temperature and thermal conductivity of the furnace, but also corrodes the equipment, especially when the furnace is shut down for cleaning. Under the furnace temperature of 200°C, it can only last for 1 to 2 minutes, and the labor intensity can be imagined. [0003] In the prior art, it is considered that water is evaporated when heated, and the catalyst is mixed with high-temperature flue gas to instantly form combustible gas to participate in combustion to increase heat energy and reduce ...

AI Technical Summary

Problems solved by technology

[0004] At present, energy-saving additives commonly used in the field of boiler environmental protection technology are divided into two categories: solid and liquid. In addition, most of the energy-saving products started vigorously, but because they could not solve the problem of coke scale, which plagued coal-fired enterprises, they finally became silent, which greatly affected the promotion and use of energy-saving additives. limit