The invention relates to the technical field of cooling, in particular to a cooling device for
polyurethane production, which comprises a reaction tank and a cooling
assembly, the reaction tank comprises a tank body and a cooling jacket, an extraction opening is formed in the top of the tank body, and a discharging opening is formed in the center of the bottom; the cooling
assembly comprises an
air pump, a
circulating pump, a
buffer tank, a compressor, a compression tank and a refrigerator; the refrigerator comprises a first cooling inlet, a first cooling outlet, a second cooling inlet and a second cooling outlet; the extraction opening, the
air pump, the
buffer tank, the first cooling inlet, the first cooling outlet, the compressor, the compression tank and the discharging opening are communicated to form inner cooling circulation; the second cooling inlet, the second cooling outlet, the
circulating pump and the cooling sleeve are communicated to form external cooling circulation; internal cooling circulation and external cooling circulation are arranged, internal and external synchronous cooling can be achieved, especially internal cooling circulation is achieved, compressed
nitrogen enters the tank body from the center of the bottom of the tank body through expansion of the compressed
nitrogen, the compressed gas is rapidly expanded to absorb heat, the contact area is increased, and meanwhile rapid cooling is achieved.