Ammonium bisulfate generation experiment device and method

Abstract

The invention provides an ammonium bisulfate generation experiment device and method, and aims to realize stable generation of ammonium bisulfate, accurate metering and simulation of influence of fly ash in flue gas on ammonium bisulfate generation. The device comprises a gas-phase gas distribution device, a liquid-phase injection device, a reaction device and a solid-phase ash adding device; the gas-phase gas distribution device comprises a nitrogen generator, an ammonia gas generator, an electronic flow controller, a gas mixing chamber and temperature control equipment, wherein the nitrogen generator and the ammonia generator are connected with corresponding gas path inlets of the electronic flow controller, and the gas mixing chamber is placed in the temperature control equipment; the liquid-phase injection device comprises a liquid storage tank and a liquid conveying pipe; the reaction device comprises a reactor, a high-temperature heating device and a second temperature measuring element; the reactor is partially located in the high-temperature heating device, the other end of the liquid conveying pipe extends into a constant-temperature section of the reactor, a gas outlet of the gas mixing chamber is connected with an inlet of the reactor, and the second temperature measuring element is arranged in the reactor; and the solid-phase ash adding device comprises a feeding machine which is arranged on the solid-phase ash adding pipeline.

Description

Technical field [0001] The present invention relates to the field of flue gas simulation experiment, in particular, an ammonium hydrogen sulfate to generate an experimental apparatus and method. Background technique [0002] SCR Method Denit Technology is currently widely used in the thermal power unit environmental protection unit, common SCR denitration device, using low dust-type arrangement, but the power plant is actually due to the limitations of denitration flow field, spray ammonia control, etc., there is a quantitative ammonia escape . This part of the ammonia and smoke SO 2 H 2 O effect, the generated viscous sulfate is ammonium hydrogen sulfate, resulting in a significant gray of the downstream empty preservation of the flue gas, increased resistance, affecting the stable operation of the equipment, there is a big hidden danger. In addition, in low load denitration, medium and low catalyst anti-SO 2 Among the research, more and more researchers are aware of the researc...

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Problems solved by technology

[0004] (1) Without ammonium bisulfate standard gas, it is difficult to achieve quantitative research

[0005] (2) The dew point temperature of ammonium bisulfate is relatively high, about 300°C, which is difficult to achieve by conventional water bath heating or high temperature tracing

[0006] (3) The existing ammonium bisulfate generation experiments are all obtained through the ternary gas phase reaction of ammonia, sulfur trioxide and water vapor, and the stable and accurate occurrence of sulfur trioxide in the reactants is itself a difficult problem

[0007] (4) The existing ammonium bisulfate generation experiments are all pure gas, but fly ash has a great influence on the generation of ammonium bisulfate in actual production, and the content of fly ash is also meaningful to the research on the generation of ammonium bisulfate

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