Ammonia stabilizer and preparation method thereof, and preparation method of electromagnetic water mixed amine solution

Abstract

The invention discloses an ammonia stabilizer and a preparation method thereof, and a preparation method of an electromagnetic water mixed amine solution. The method comprises the following steps: pumping a specific volume of deionized water into a reactor, heating the deionized water to 95 DEG F, and keeping the temperature for 3-5 hours; injecting nitrogen from the upper layer of the reaction container until the medium pressure reaches 35psi; injecting the concentrated solution from the bottom of the reaction container, keeping the medium pressure at 35 psi and the temperature at 95 DEG F, and reacting for 5-7 hours; injecting the amine mixture from the bottom of the reaction container, keeping the pressure at 35 psi and the temperature at 95 DEG F, and reacting for 10-13 hours after the amine mixture is injected; and slowly releasing the pressure and the temperature to a normal-temperature and normal-pressure state to obtain the electromagnetic water mixed amine solution with the pH value of more than 12.

Description

technical field [0001] The invention relates to an ammonia decarburization technology, in particular to an ammonia stabilizer and a preparation method thereof, and a preparation method of an electromagnetic water mixed amine solution prepared by using the ammonia stabilizer. Background technique [0002] The treatment of acid waste gas in industrial production has always been a difficult problem. With the intensification of the global greenhouse effect, my country's industrial waste gas emission standards are becoming increasingly stringent. [0003] In the current acid waste gas treatment process, amines are often used for waste gas treatment, but the operation of the system is often designed with a clean solution, but in the actual process, most systems are not clean, and heat stable salts HSS, degradation products, Suspended solids and hydrocarbons, and when the amine concentration is high, it is easy to cause excessive acid gas flashing, which will cause corrosion to the...

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Problems solved by technology

[0003] In the current acid waste gas treatment process, amines are often used for waste gas treatment, but the operation of the system is often designed with a clean solution, but in the actual process, most systems are not clean, and heat stable salts HSS, degradation products, Suspended solids and hydrocarbons, and when the amine concentration is high, it is also easy to cause excessive acid gas flashing, which will cause corrosion to the boiler

[0004] The formation of heat-stable salt HSS is mainly due to the decomposition and reaction of amines under the action of heat, the oxidation of H2S and the absorption of added strong base anions. A sign of increased corrosivity begins with hot lean amine systems entering the amine filter. If the amine filter does not adequately remove HSS, the life of the filter may have no effect, but the amine solution will become darker in color. Dark amine solutions in After entering the absorption tower, it will cause foaming and cause product loss. Even if adding more amine products can temporarily reduce the heat stable salt corrosion, the cost will inevitably increase, and the pollution overflow problem must be dealt with. Re-add more amine products

[0005] The degradation product is the thermal degradation product of the amine solution, which destroys the protective layer FeS of the system. The increase of the degradation product will increase the corrosion rate and increase the instability of the system. In addition, the increase of the degradation product will lead to the increase of amine foaming, resulting in The loss of the heat exchanger is increased, the amount of effective amine is reduced, and the deposition of degradation products on the heat exchanger will also lead to a decrease in exchange efficiency

[0006] Solid impurities mainly come from equipment corrosion debris FeS, the existence of solid substances will cause blockage of heat exchangers, filters and pipes, frequent replacement of filter elements is required, and increase the foaming of the solution

[0007] The presence of hydrocarbon impurities will cause foaming in the reaction tower, resulting in increased loss of amines, and also reduces the separation efficiency of hydrocarbons, and may lead to catalyst deactivation in the subsequent process

[0008] To solve the above technical problems, it is mainly to improve the solvent. The improvement method of traditional solvent producers is to add more additives to the solvent, such as the configuration solvent composed of amine, antifoam agent and / or corrosion inhibitor, but this Solvent not only has the disadvantage of being very expensive, it is difficult to popularize in the actual production process, and even if it is added, problems such as foaming and corrosion cannot be avoided

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