The invention discloses a device for preparing liquid
sulfur dioxide from high-temperature
sulfur-containing
waste gas. The device comprises a filter (1), a
reboiler (2), a phase-change condenser (3), an absorption
tower (4), a lean / rich liquor
heat exchanger (7), a
desorption tower (8), a dryer (9), a gasification condenser (10), a compressor (11) and a liquid
sulfur dioxide
storage tank (12). The device has the
advantage that high-temperature properties of the sulfur-containing
waste gas are sufficiently utilized, and
material flow connection sequences are adjusted, so that the purpose of optimally configuring energy can be achieved; abundant
water vapor in the
waste gas is preliminarily removed, 'primary thickening' and 'secondary absorbing'
modes are adopted for
sulfur dioxide, accordingly, the sizes of equipment can be effectively reduced, the
mass transfer efficiency can be improved, and the purposes of saving energy and reducing consumption can be achieved; public resources and existing technologies are sufficiently utilized, so that the comprehensive efficiency of systems can be improved.