Ammonia gas absorption device

The utility model provides an ammonia gas absorption device, each partition plate (203) is arranged in a corresponding unit chamber (2015), and each partition plate (203) is provided with a vent hole (2031) communicated with the unit chamber (2015); the air inlet (2011) is communicated with the first unit chamber (2015), and the air outlet (2012) is communicated with the nth unit chamber (2015); a first gas passing hole (2021) is formed in the position, connected to the lower portion of the corresponding partition plate (203), of the baffle (202) located in the kth unit chamber (2015) in the overflowing direction of tail gas containing ammonia gas, and k is an odd number larger than or equal to 1; a second air passing hole (2022) is formed in the position, connected above the corresponding partition plate (203), of the baffle (202) located in the hth unit chamber (2015), and h is an even number larger than or equal to 2; when n is an odd number, k is smaller than or equal to n, and h is smaller than n; when n