Pumping and dedusting device and dedusting process for calcining process of sodium carbonate production

The invention discloses a pumping and dedusting device and dedusting process for a calcining process of sodium carbonate production. According to the device, a gas-liquid general pipe is arranged close to the dedusting device; the exhaust opening of the dedusting device is communicated with the air inlet of a washing device; the discharge end of the washing device is communicated with the transverse section of the gas-liquid general pipe; a gas-liquid mixture is separated in the transverse section of the gas-liquid general pipe, a liquid flows in the water inlet of the washing device through a washing water storage barrel and a washing water pipe to form a liquid loop; a soft water supply opening is formed in the washing water storage barrel, and a washing water branch pipeline communicated with a device capable of utilizing return washing water is provided on the washing water pipeline; and the exhaust end of the gas-liquid general pipe is provided with an exhaust device communicated with the outside. Accord