Low-temperature desolventizing device and low-temperature desolventizing process for low-temperature soybean meal

The invention discloses a low-temperature desolventizing device and a low-temperature desolventizing process for low-temperature soybean meal. The low-temperature desolventizing device comprises a cylinder A, a cylinder B and a cylinder A solvent gas heating circulating system, and a feeding port of the cylinder B is communicated with a discharging port of the cylinder A; the A cylinder solvent gas heating circulating system comprises an A cylinder heating circulating pipeline, and a main cyclone dust collector, a circulating fan, a solvent gas heater and a thermal resistor which are arranged in sequence, the thermal resistor is connected with a steam self-control valve of the solvent gas heater through a controller, and the main cyclone dust collector discharges dust into the B cylinder; the cylinder A is provided with a feeding settling cylinder and an air outlet settling cylinder which are separated by a partition plate, the channel inner diameter of an air outlet channel is larger than ...