Organic-phosphonate-based organic energy-saving and emission-reduction agent for industrial boiler

Abstract

The invention discloses an organic-phosphonate-based organic energy-saving and emission-reduction agent for an industrial boiler. The organic-phosphonate-based organic energy-saving and emission-reduction agent comprises, by mass, 15%-25% of 1-Hydroxyethylidene-1,1-diphosphonic acid, 10%-15% of butane phosphate-1,2,4-tricarboxylic acid, 5%-10% of maleic acid-acrylic copolymer, 2%-3% of morpholine, 1%-2% of diethylhydroxylamine, 0.2 %-0.8% of tannin alkali metal salt and the balance water. The organic-phosphonate-based organic energy-saving and emission-reduction agent is free of inorganic chemical ingredients, all the components in the formula are organic, the water dissolved solid matter, the blowdown rate and the heating surface scaling rate of the industrial boiler are lowered effectively, and the chemical cleaning period of the boiler is prolonged; the agent is high in scale inhibition corrosion inhibition efficiency, small in feeding quantity, free of poison, low in cost, wide in ingredient source, stable in high-temperature performance, capable of adjusting the return condensate quality and lowering the return water system corrosion rate and suitable for industrial boilers of various types and various supply water quality conditions, and the boiler operation water quality index of the boilers is not affected in use.

Description

technical field [0001] The invention relates to an energy-saving and emission-reducing agent, in particular to an organic energy-saving and emission-reducing agent for industrial boilers mainly composed of organic phosphonates. Background technique [0002] Industrial boilers are important industrial heat equipment and special equipment with high energy consumption. They are widely used in chemical industry, papermaking, textile, machinery, food and other industries and fields. They are closely related to people's lives, and their operation safety and economy are directly related. to the safe development of the economy and society. my country currently has more than 620,000 industrial boilers, which consume nearly 1 billion tons of standard coal per year. At present, the thermal efficiency of industrial boilers in my country is generally 10% to 15% lower than that of western developed countries. One of the main reasons is the scaling and blowdown heat loss caused by boiler ...

AI Technical Summary

Problems solved by technology

At present, the addition of inorganic scale inhibitors such as trisodium phosphate, sodium hydroxide, sodium carbonate, sodium sulfite, and sodium humate during the operation of many users can control the scaling and corrosion of boilers to a certain extent, but the scale and corrosion inhibition efficiency is relatively low. Low

More importantly, these chemicals and impurities in the boiler water produce slag and some salt substances, which increase the dissolved solids in the boiler water and increase the alkalinity, which must be discharged by increasing the boiler blowdown. This in turn causes a loss of boiler heat

Moreover, these agents cannot be used in the once-through and through-flow industrial boilers that are widely used at present.

[0004] Organic chemicals are currently also used in industrial boilers, but most of them are single-component chemicals or simple mixtures of several chemicals, which have disadvantages such as unscientific proportioning, poor temperature resistance, and limited synergistic effect. The scale and corrosion inhibition rate is often only 80% %about