Two-stage type lignin steaming and cooking separation device

The invention relates to a two-stage type lignin steaming and cooking separation device, which comprises a charging mechanism, a steaming and cooking separation mechanism and a discharging mechanism, wherein the charging mechanism comprises a belt conveyor (1) and a spiral mixer (2). The two-stage type lignin device of steaming and cooking separation is characterized in that the steaming and cooking separation mechanism comprises a temperature rise storehouse (6) and a temperature preserving storehouse (8) which are connected in series by a gate valve (7); the temperature rise storehouse (6) is connected with the charging mechanism by a feeding gate valve (3); the temperature preserving storehouse (8) is connected with the discharging mechanism by a discharging gate valve (9); and the temperature rise storehouse (6) and the temperature preserving storehouse (8) are internally provided with spiral output mechanisms. By the sealing action of the gate valves (3), (7) and (9), the device realizes two-stage type s