RU1805999C - Method of cleaning gases of nitric oxides - Google Patents

Abstract

Usage: chemical industry. The inventive waste gases with NOx impurities are passed through a vessel with a sorbent containing aminoparaffin of the formula C12-18H2 (12-18HNH2. Its content is 50-60%. Secondary amines are additionally contained. Process temperature 15-25 ° C The purification product, nitric acid aminoparaffin, is a corrosion inhibitor and the degree of purification from NOX is 99.99%.

Description

The invention relates to the purification of exhaust gases (exhaust gases) from nitrogen oxides (NOx). An example of a specific implementation No. 1.

1. Exhaust gas containing 400 ppm NOx is passed through a glass absorber containing 100 ml of 50% aminoparaffin at a rate of 2 L / min at 15 ° C. The initial sorbent contains primary (46.4%) and secondary (5.7) amines, Aminnre number - 7.94.

2. At the outlet of the absorber, the exhaust gas is analyzed for its NOx content.

Analysis Results:

- final content of NOx in the exhaust gas is 0.5.

The remaining examples of specific performance, proving the correctness of the claimed interval, are similar to Example 1, and their variable parameters are shown in the table including Example 1.

As can be seen, the claimed method provides efficient purification of exhaust gas from NOx, provided that the specified intervals are provided (ex. 1,2,4,5), and going beyond these intervals is either technologically advanced (ex.2) or energetically (ex .6.7) is not profitable or does not provide the necessary degree of purification (pr.3).

Currently, the claimed object is at the stage of research. The implementation of the claimed facility in the national economy is planned in 1992.

The implementation of the method will reduce NOx emissions into the environment, which helps to improve the environmental situation.

The simplification in the claimed method is achieved by eliminating the use of high pressures and membranes.

The amioparaffin nitrate resulting from the gas treatment process is an effective corrosion inhibitor.

Claims (1)

The claims The method of purification of gases from nitrogen oxides, comprising treating them with an sorbent containing an amino compound, from l and h and more so that, in order to simplify the consumption of WITH 00 about eating  with process, as the amino compound used MN, when it is contained in the sorbent, aminoperafin of the formula Ct2-i8H2 (i2 is less than 50 wt.%) is not used.