Air Separation Unit & Air Separation Plant
The basic principle of air separation is use cryogenic rectification to condense air into liquid and separate the air according to the evaporation temperature of each component. The two-stage rectification tower simultaneously obtains pure nitrogen and pure oxygen at the top and bottom of the upper tower. It is also possible to take out liquid oxygen and liquid nitrogen from the evaporation side and the condensation side of the main cooling respectively. The air separation in the rectification tower is divided into two stages, air is separated for the first time in the lower tower to obtain liquid nitrogen and at the same time obtain oxygen-enriched liquid air. The oxygen-enriched liquid air is sent to the upper tower for rectification to obtain pure oxygen and pure nitrogen. The upper tower is divided into two sections: with the liquid-air inlet as the boundary, the upper part is the rectification section, which rectifies the rising gas, recovers the oxygen component, and purifies the nitrogen purity, and the lower section is the stripping section to remove the nitrogen components in the liquid, separated to improve the oxygen purity of the liquid.
Air Separation Unit , Air Separation Plant Atmospheric Cryogenic Storage Tank, VPSA Oxygen Plant, Microbulk Tank , https://www.doercryo.com
The author was informed that through years of efforts, vacuum dryers in China have achieved major breakthroughs, and they have made significant progress in automation. Such as a full set of processes can be automated, pipeline, continuous, programmed; energy consumption is only one-third of the same amount of centrifugal sprayer; drying process is completed in a vacuum at low temperature, heat-sensitive materials are not deformed, the opportunity for contamination of bacteria, etc. . Among them, Changzhou is the SZG series double-cone rotary vacuum dryer developed and produced by Lifa Drying Engineering Co., Ltd. It is a new generation of drying device, with stable operation and unique design process.
China is a big country in the production of bulk drugs, but compared with India and other countries, China's bulk drugs still have a certain gap between cost advantage and industry development speed. In recent years, the importers of raw material drugs have imposed higher requirements on the production process of pharmaceutical companies in China, and various certifications have been rapidly launched in the pharmaceutical industry. For APIs, the focus of these certifications is on the fine, dry, and package positions. Therefore, the improvement of the drying equipment process is of great significance.
The vacuum dryer has the advantages of low drying temperature and relatively low oxygen in the drying room, which can avoid fat oxidation, pigment browning and other advantages, but at the same time it has the disadvantages of high investment cost, high operating cost, low production efficiency, and small output. And compared with foreign advanced technology, China's vacuum dryer is still relatively backward. Therefore, related companies still need to continuously make efforts to strengthen technological innovation, promote the improvement of equipment technology, so as to meet market demand, effectively help companies to dry raw materials, reduce energy consumption, realize automated and intelligent production of APIs, and promote APIs. Green upgrade.
According to industry insiders, drying equipment companies should take the path of resource-saving development, change the single extensive drying into combination and intelligent drying, and not only must fundamentally transform the drying process, but also carry out comprehensive and multi-level energy-saving technological transformation. We will vigorously develop drying technologies that use renewable energy and industrial waste heat.
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