System and method for coupling alternative fuel vortex gasification and cement production line

The invention discloses a system and a method for coupling alternative fuel vortex gasification and a cement production line, the system comprises a vortex gasification device, a decomposing furnace, a smoke chamber and a material distributing device, and an outlet of the material distributing device is respectively connected with the smoke chamber and an ash cooling system; the vortex gasification device comprises a vortex gasification section, a suspension section, a fluidized bed section and an air chamber section; the vortex gasification section is provided with an air inlet pipeline, and a smoke leading-out pipeline is connected between the air inlet pipeline and the smoke chamber; a flue gas outlet connected with the decomposing furnace is formed in the top of the suspension section; the vortex gasification device is provided with an alternative fuel feeding port, a difficult fuel feeding port and a bed material feeding port; and the fluidized bed section is provided with a slag outlet connected with th