▎ 摘　　要

NOVELTY - A system includes a dehydration reactor (1), a cycloaddition reactor (3), an epoxy compound feedstock storage tank (4), a carbonate product storage tank (5) and an ethylene glycol or 1,2-propanediol product storage tank (6). The inlet of the dehydration reactor is connected with industrial exhaust gas carbon dioxide input pipe through flue gas induced draft fan (7) and its outlet is connected with a booster fan (9) through a deep desulfurization/denitrification device (2) and a buffer airbag (8). The bottom of the cycloaddition reactor is connected to the carbonate product storage tank via a collection pump (12). A sprayer is arranged in upper portion of the cycloaddition reactor, and connected with bottom of the epoxy compound feedstock storage tank through a filling pump (11). The collection device of dehydration reactor is connected to output pipe of filling pump and its bottom is connected to ethylene glycol or 1,2-propanediol product storage tank through a collection pump (10). USE - System used for converting industrial exhaust gas carbon dioxide into cyclic carbonate (claimed). ADVANTAGE - The system can save investment and operation cost. DETAILED DESCRIPTION - A system includes a dehydration reactor, a cycloaddition reactor, an epoxy compound feedstock storage tank, a carbonate product storage tank and an ethylene glycol or 1,2-propanediol product storage tank. The inlet of the dehydration reactor is connected with industrial exhaust gas carbon dioxide input pipe through flue gas induced draft fan and its outlet is connected with a booster fan through a deep desulfurization/denitrification device and a buffer airbag. The bottom of the cycloaddition reactor is connected to the carbonate product storage tank via a collection pump, the top is provided with a discharge pipe connected with exhaust gas treatment device and the middle is provided with an input port for basic catalyst. A sprayer is arranged in upper portion of the cycloaddition reactor, and the sprayer is connected with bottom of the epoxy compound feedstock storage tank through a filling pump. A carbon dioxide gas distributor is provided at inner bottom of the cycloaddition reactor, and the carbon dioxide gas distributor is connected to outlet of the booster fan. The collection device of the dehydration reactor is connected to the output pipe of the filling pump and its bottom is connected to ethylene glycol or 1,2-propanediol product storage tank through a pipeline through a collection pump, and a solid base catalyst input pipeline is provided. An INDEPENDENT CLAIM is included for method for converting industrial exhaust gas carbon dioxide into cyclic carbonate, which involves: (a) entering industrial exhaust gas containing moisture with volume concentration of 5-10% to dehydration reactor through flue gas induced draft fan and obtaining the flue gas and water from which the moisture is removed respectively; (b) entering the flue gas from which moisture has been removed to deep desulfurization/denitrification device, and removing interfering substances, to obtain treated flue gas with carbon dioxide volume concentration of 10-100%; (c) adding a basic catalyst to the middle of the cycloaddition reactor, while adding solid basic catalyst to the bottom of the dehydration reactor; (d) spraying epoxy compound at a uniform speed of 200-1000 kg/hour from top of cycloaddition reactor through filling pump from the epoxy compound raw material storage tank, introducing treated flue gas from bottom of the cycloaddition reactor through buffer airbag and the booster fan at a flow rate of 1-2x103 m3/hour and obtaining first exhaust gas and cyclic carbonate by cycloaddition reaction at 50-150degrees Celsius, entering cyclic carbonate to carbonate product storage tank through the collection pump, entering the epoxy compound from bottom of the dehydration reactor at rate of 90-360 kg/hour through the filling pump and reacting with water, to obtain second exhaust gas and ethylene glycol or 1,2-propylene glycol, and entering the ethylene glycol or 1,2-propylene glycol to ethylene glycol or 1,2-propylene glycol product storage tank through the collection pump; and (f) collecting first exhaust gas and second exhaust gas, performing condensation and adsorption treatment, collecting unreacted raw materials and products brought out by gas flow, and further processing and reusing until the discharge is up to the standard, regenerating base catalyst in cycloaddition reaction and solid base catalyst in hydration reaction by filtering, and centrifuging or removing product by distillation. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the system. (Drawing includes non-English language text). Dehydration reactor (1) Deep desulfurization/denitrification device (2) Cycloaddition reactor (3) Epoxy compound feedstock storage tank (4) Carbonate product storage tank (5) Ethylene glycol or 1,2-propanediol product storage tank (6) Flue gas induced draft fan (7) Buffer air bag (8) Booster fan (9) Collection pump (10) Filling pump (11) Collection pump (12)