5results about "Ammonium sulfites" patented technology

This invention discloses a system for producing ammonium sulfite using electrolytic manganese ammonium sulfate double salt. The system includes a drum high-temperature drying device. The electrolytic manganese ammonium sulfate mixture output from the drum high-temperature drying device is fed into a crushing device via an elevator. The electrolytic manganese ammonium sulfate mixture output from the crushing device is fed into an anaerobic calcining furnace. A three-stage electrostatic precipitator is connected to the rear end of the anaerobic calcining furnace. The exhaust gas, after dust removal by the three-stage electrostatic precipitator, is sent to a multi-stage absorption and conversion tower via an exhaust gas pipeline. The conversion liquid and the completed absorption liquid after passing through the multi-stage absorption and conversion tower are sent to an evaporation device. This system and method for producing ammonium sulfite using electrolytic manganese ammonium sulfate double salt improves the calcination effect through pretreatment such as drying and crushing, and ultimately converts the ammonium sulfate into sulfur dioxide through anaerobic calcination to prepare ammonium sulfite. The difference lies in the direct blending and calcination method used in domestic and international processes.

The invention belongs to the field of waste gas treatment, and particularly relates to a flue gas ammonia process desulfurization recovery method and system.The method comprises the steps that flue gas enters the bottom of a desulfurization tower, is evenly distributed through a first gas distribution brick layer and then continues to rise, the flue gas and desulfurization liquid sent by primary tail absorption liquid circulation are subjected to countercurrent removal, and most SO2 is removed; and then the flue gas is removed from the reverse flow of the desulfurization liquid circularly sent by the second-stage tail absorption liquid, and SO2 in the flue gas is further removed, so that the flue gas meets the standard requirement. And the desulfurized flue gas enters a second gas distribution brick layer to uniformly distribute the gas again, the uniformly distributed gas is washed, the entrained desulfurization liquid is removed, washing and cooling are performed, and finally the gas is discharged into the atmosphere. According to the method, ammonium sulfite is directly utilized, a drying and concentrating facility is omitted, an oxidation process is omitted, investment is reduced, and processes are reduced.

The present invention is based on the combined removal of hydrogen sulfide from a raw gas mixture and removal of ammonia from a waste liquid. The invention relates to a method for the combined removal of hydrogen sulfide from a raw gas mixture and removal of ammonia from a waste liquid. The invention also relates to a method for the production of ammonium sulfate.

The invention belongs to the technical field of environmental protection engineering, and provides a modular efficient integrated ground dust removal and desulfurization integrated system which comprises a modular skid base, an efficient bag-type dust remover, a rotational flow plate tower desulfurization device, an induced draft fan, a spraying system and a control system. All the units are integrated on the same base, and the flues are linearly connected through CFD optimization, so that the pressure loss is reduced; the control system constructs a triple closed loop of ammonia balance, water balance and concentration control, and dynamically regulates agent addition, liquid level and slurry discharge to ensure that sulfur dioxide and particulate matters at an outlet are lower than those at the outlet. The system is compact in structure, capable of being integrally hoisted, uniform in by-product ammonium sulfate crystal particle size and suitable for various industrial scenes.

The invention discloses a point discharge plasma nitrogen fixation device and method based on plane medium assistance. The nitrogen fixation device comprises a plasma generator, a reactor and a gas system, the plasma generator is used for discharging, the gas system is used for providing reaction gas, the reactor is an electrolytic tank, an electrolyte is arranged in the electrolytic tank, the electrolyte is provided with a plane medium, and the plane medium is provided with a nitrogen source. The planar medium takes foamed nickel as a substrate, the surface of the foamed nickel is loaded with oxide and / or hydroxide, and the foamed nickel is completely wetted and placed at an electrolyte interface before reaction, so that the plasma discharge effect acts on foamed nickel pores. The design of the reaction system aims to improve the ionization degree of the gas by introducing the planar solid-phase medium, so that a stable micro-discharge environment is favorably formed at an interface by a discharge electric field, heat energy or ineffective current loss is reduced, and the nitrogen activation efficiency and the energy utilization rate are remarkably improved.