PERFECTION OF COMPLEXES FOR MANUFACTURE THE LIQUID LOW-TEMPERATURE DIOXIDE CARBON FROM FLUE GASES. 1. DECREASE OF POWER CONSUMPTION IN CYCLES OF HIGH PRESSURE

Abstract

Dioxide carbon as dry ice or liquid it is basically made from flue gases, which turn out at burning solid, liquid or gaseous fuel. Complexes of reception existing now dioxide carbon in this connection will consist of plant for extraction СО2 from flue gas by method of absorption-desorption and carbon dioxide refrigerating system reception dioxide carbon in any condensed condition. The analysis of complexes characteristics, which are maintained now, shows that they require of serious modernization. The effective ways of improvement characteristics of two basic plants of complex: absorption-desorption unit and carbon dioxide refrigerating system are considered in the present article. It is offered to make the liquid low-temperature dioxide carbon in carbon dioxide refrigerating system of cascade type in which in the top cascade the absorption ammoniac refrigerating machine using heat flue gases. Besides in structure of carbon dioxide refrigerating system is entered the small compression-refrigerating machine for overcooling liquid dioxide carbon before throttle. The specified improvements allow by manufacture of low-temperature liquid dioxide carbon to finish the specific charge of the electric power in cases of use the compressor 3UGM up to 0,164, and in case compressor 2UP — up to 0,134 kW•h /kg. It enables to reduce it in comparison with standard plants, a minimum on 30 %.