Spraying system and method for water-washing ammonia gas for preparing synthetic ammonia

Abstract

The invention relates to the technical field of chemical gas processing, in particular to a washing ammonia spraying system and method for preparing synthetic ammonia, the washing ammonia spraying system comprises a support frame, a spraying barrel and a spraying device, the spraying barrel is mounted on the support frame, and the spraying device is inserted into the upper end of the spraying barrel. The invention can solve the problems that when the existing equipment is used for removing ammonia from the process gas, the spraying equipment in the water scrubber cannot realize circumferential rotation, and the water diffusion range is always kept unchanged, so that the process gas easily passes through the outside of the water spraying range, the ammonia removal effect of the process gas is reduced, and the like. According to the washing ammonia gas spraying system for preparing synthetic ammonia, the spraying mechanism is matched with the driving motor and the transmission gear, so that the spraying mechanism can obliquely move in the circumferential direction, the water spraying range of the spraying mechanism is enlarged, the contact area of water and process gas is increased, and the removal effect of ammonia gas in the process gas is improved.

Description

technical field [0001] The invention relates to the technical field of chemical gas processing, in particular to a water-washed ammonia spray system and method for preparing synthetic ammonia. Background technique [0002] Synthetic ammonia refers to ammonia that is directly synthesized from nitrogen and hydrogen in the presence of high temperature and high pressure and catalyst, which is a basic inorganic chemical process; a large amount of process gas will be generated during the preparation of synthetic ammonia, and the process gas contains a large amount of ammonia gas. Ammonia is recovered, and the method uses soft water as the absorption liquid. [0003] When removing ammonia from the existing process gas, a water washing tower is usually used for treatment, and the process gas is removed by a water washing tower, which is simple and convenient to operate, but the spray equipment in the existing water washing tower cannot realize circumferential rotation, and the dryin...

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Problems solved by technology

[0003] The existing water washing tower is usually used to remove ammonia from the process gas. The water washing tower removes ammonia from the process gas, and the operation is simple and convenient. However, the spray equipment in the existing water washing tower cannot realize circumferential rotation, and the The range of water diffusion remains unchanged, so it is easy for the process gas to pass through outside the spraying range, thereby reducing the effect of the process gas on ammonia removal

[0004] When the existing water washing tower removes ammonia from the process gas, there are still dust particles in the process gas flowing with the process gas and attaching to the spraying equipment, which leads to the blockage of the spraying equipment and makes the water spraying not effective. out, so that ammonia removal from the process gas is not possible

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