Rosin resin production method and device

The invention discloses a rosin resin production method and device.The device comprises a glycerol tank, a pentaerythritol vacuum tank and an auxiliary chemical material vacuum tank which are each provided with an electronic meter and are all connected with an esterification reactor with an electronic meter; a material inlet of the pentaerythritol vacuum tank is connected with a vacuum pipe, a dissolving pan is connected with the esterification reactor through a vacuum pipe, the top of the esterification reactor is provided with a reflux condenser and a condenser, the upper end of the condenser is connected with a vacuum waste liquor receiving tank which is connected with a buffer tank through a demister, the buffer tank is connected with a vacuum pump, and a waste liquor outlet of the vacuum waste liquor receiving tank, a waste liquor outlet of the demister and a waste liquor outlet of the buffer tank are all connected with a waste liquor recycling tank; the esterification reactor is connected with a finishe