The utility model relates to the technical field of gas
drying equipment, and discloses a zero-gas-consumption blast cold blowing regeneration compressed gas
drying system which realizes adsorption, regeneration and pressure
equalization. The
water content of gas entering the
system is reduced, the quality of
product gas is improved, meanwhile,
energy consumption and production cost can be reduced, low-
dew-point
dry gas is prepared, cold-blowing
airflow is powered by an
air blower, cold-blowing circulating
airflow is output from the
air blower and enters a second adsorption
tower from bottom to top, and cold-blowing cooling is conducted on an adsorbent; after flowing out of the second adsorption
tower, the cold blowing gas enters the
air blower to be sucked and pressurized and then is output, and is cooled by the regeneration cooler to form the whole cold blowing circulation until the temperature of the second adsorption
tower is reduced to the set temperature, so that finished gas is completely not consumed, the cost is reduced, emptying is basically avoided in the whole process, and
noise and
pollution caused by sudden
discharge of compressed gas are eliminated; the switching is stable, the service life of the adsorbent is prolonged, and the equipment basically realizes
zero emission and saves energy.