Cyclic utilization method of ammonia gas in production process of ammonium paratungstate
A technology of ammonium paratungstate and ammonia, which is applied in the preparation/separation of ammonia, the preparation of tungsten compounds, chemical instruments and methods, etc., can solve the problems of surrounding population hazards, increased internal pressure, hidden safety hazards, etc., to protect the ecological environment, The effect of zero consumption and low investment
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Embodiment 1
[0018] A method for recycling ammonia gas in the process of producing ammonium paratungstate. The specific steps are as follows: firstly connect the crystallization pot in the process of producing ammonium paratungstate and the discharge port of the rotary furnace in the process of producing yellow and blue tungsten in parallel, and use an induced draft fan to connect the two devices. The ammonia gas is sent into the rectification tower for preliminary gas-liquid separation, and then transferred to the condensation system for thorough gas-liquid separation after the preliminary gas-liquid separation, to obtain ammonia gas, and then transfer 73% of the obtained ammonia gas to the spray adsorption tower. Use hydrochloric acid to spray and adsorb ammonia. Use 1.35 mol / L of hydrochloric acid for spray adsorption to obtain ammonium chloride solution and collect it in container I. Then pump the ammonium chloride solution in container I off the ground In the 20.5m high Venturi device, ...
Embodiment 2
[0020] A method for recycling ammonia gas in the process of producing ammonium paratungstate. The specific steps are as follows: firstly connect the crystallization pot in the process of producing ammonium paratungstate and the discharge port of the rotary furnace in the process of producing yellow and blue tungsten in parallel, and use an induced draft fan to connect the two devices. The ammonia gas is sent into the rectification tower for preliminary gas-liquid separation, and then transferred to the condensation system for thorough gas-liquid separation after the preliminary gas-liquid separation, to obtain ammonia gas, and then transfer 75% of the obtained ammonia gas to the spray adsorption tower. Use hydrochloric acid to spray and adsorb ammonia. Use 1.25 mol / L of hydrochloric acid for spray adsorption to obtain ammonium chloride solution and collect it in container I. Then pump the ammonium chloride solution in container I off the ground In the 21m high Venturi device, at...
Embodiment 3
[0022] A method for recycling ammonia gas in the process of producing ammonium paratungstate. The specific steps are as follows: firstly connect the crystallization pot in the process of producing ammonium paratungstate and the discharge port of the rotary furnace in the process of producing yellow and blue tungsten in parallel, and use an induced draft fan to connect the two devices. The ammonia gas is sent into the rectification tower for preliminary gas-liquid separation, and then transferred to the condensation system for thorough gas-liquid separation after the preliminary gas-liquid separation, to obtain ammonia gas, and then transfer 77% of the obtained ammonia gas to the spray adsorption tower. Use hydrochloric acid to spray and adsorb ammonia. Use 1.15mol / L for the concentration of hydrochloric acid for spray adsorption to obtain ammonium chloride solution and collect it in container I. Then pump the ammonium chloride solution in container I off the ground In the 21.5m ...
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