Device for recycling exhaust gas in neutralization reaction

The utility model particularly relates to a device for recycling exhaust gas in a neutralization reaction. The device for recycling the exhaust gas in the neutralization reaction comprises a gas-liquid separator and an emptying pipe, wherein a liquid phase outlet at the lower part of the gas-liquid separator is connected with an ammonium nitrate condensate collecting pipe; a gas phase outlet at the upper part of the gas-liquid separator is connected with the emptying pipe; a liquid draining port at the bottom of the emptying pipe is connected with the ammonium nitrate condensate collecting pipe; the device for recycling the exhaust gas in the neutralization reaction is characterized in that a surface condenser is serially connected between the gas phase outlet of the gas-liquid separator and the emptying pipe; the gas phase outlet of the gas-liquid separator is connected with a gas phase inlet of the surface condenser; a gas phase outlet of the surface condenser is connected with the emptying pipe; and a liqu