STUDY OF PURIFICATION METHODS OF AQUEOUS SOLUTIONS OF UREA-AMMONIUM MIXTURE FROM OIL PRODUCTS

UDC 661.526.067.9:665.76

 

Novosad Yuri Aleksandrovich – Head of the Urea-2. JSC “Grodno Azot” (100, Cosmonavtov Ave., 230013, Grodno, Republic of Belarus). E-mail: novosad@azot.com.by

Logis Marina Valer’yevna – Head of the SNPCPL. JSC “Grodno Azot” (100, Cosmonavtov Ave., 230013, Grodno, Republic of Belarus). E-mail: mlogis@azot.com.by

Eshchenko Lyudmila Semenovna – DSc (Engineering), Professor. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail:yeshchanko@belstu.by

Alekseeva Anastasia Viktorovna – student. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: anastasia.alekseeva2023@mail.ru

 

DOI: https://doi.org/ 10.52065/2520-2669-2024-277-13.

 

Key words: degree of purification from oil products, urea ammonium nitrate mixture (UAN), sorbents, corrosion inhibitor, extraction, organosilicon liquid.

 

For citation: Novosad Yu. A., Logis M. V., Eshenko L. S., Alekseeva A.V. Study of purification methods of aqueous solution of urea-ammonium mixture from oil products. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geology, 2024, no. 1 (277), pp. 96–102 (In Russian). DOI: 10.52065/2520-2669-2024-277-13.

Abstract

Methods of purification of nitrogen fertilizers in liquid phase from oil products are discussed. It is noted that during the production stages of urea, ammonium nitrate, and anhydrous liquid ammonia solutions, petroleum oils are accumulating. These oils can reduce product quality, create a fire and explosion hazard, and decrease the effectiveness of organic corrosion inhibitors. The known methods of purification of nitrogen fertilizers in the liquid phase from petroleum oils, which are currently not used in industry, are characterized. At the present stage for purification of nitrogen fertilizer solutions from oil, due to its low concentration and production conditions, properties of the medium (possibility of crystallization), and the most optimal method may be sorption or extraction of oil directly from the solution. The results of the research of the process of purification of urea-ammonium aqueous mixture produced in the JSC “Grodno Azot” with the use of a of sorbents, using designed to absorb and fix petroleum products (OL-EX 82, SONET-SORB, ECOLAN) “Meltblown” material grade A and organosilicon liquid PMS-20 for oil extraction are presented. The degree of purification of UAN solutions as well as the degree of inhibitor absorption in the presence of these materials was determined. It is noted that the maximum achievable degree of purification from oil in all investigated solutions does not exceed 88% and is characteristic of the sorbent and organosilicon liquid. It is noted that the sorption of inhibitor is observed at high content (above 100 mg/dm3 ) in UAN solution.

 

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08.01.2024