Leipzig Autumn Fair - Germany / German Democratic Republic 1971 - 25 Pfennig

Leipziger Herbstmesse 1971 At the Leipzig Autumn Fair in 1971, the Ministry of Posts and Telecommunications of the German Democratic Republic issues two special postage stamps with illustrations of chemical plants produced in the GDR. Chemical plants from the German Democratic Republic In the production program of the chemical plant construction of the GDR are u.a. Reforming plants and Butadiengewinnungsanlagen included. These plants produce on the basis of modern chemical-technological processes, which were developed in socialist community work between the chemistry and the chemical plant construction of the GDR. With the scientific-technical and economic performance indices of these chemical plants, the world's top is determined in such types of plants. Within the chemical plant construction, a meaningful specialization takes place, e.g. VEB SKL Magdeburg responsible for the research and development, design, construction, technology, production, installation and commissioning of reforming plants, the VEB Maschinen- und Apparatebau Grimma - Chemieanlagenbaukombinat - for butadiene recovery plants. 25-pfennig value refurbishment plant SKL The core of a reforming plant is a reactor cascade consisting of 3 to 5 reactors with a fixed contact bed. In addition, the preheating of the fractions is important, which is carried out today in a multi-chamber furnace. The summary of the furnace system makes it possible to achieve a thermal efficiency of 86 percent. In the compressors are mainly provided turbo compressors with electric motors gas turbines or steam turbine drive. With steam turbine drive, steam generation often takes place in the system block. Pressure and temperature of the reforming process are adapted to the wishes of the operator, depending on whether heavy or light fractions are used or whether end-products of gasoline or special aromatics are needed for petrochemical purposes. These production goals are also decisive for the size of the plant. The chemical plant construction of the GDR offers refining plants with coupled refining for a throughput of 300 to 500 kt / a. With regard to diesel refining, chemical plant construction is geared to a capacity of 600 kt / a or to a twin plant of 1,200 kt / a. The system supplier undertakes the planning, delivery and assembly of complete butadiene recovery plants.