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Integral method and apparatus for continuous ammonium-sulfate production and flue desulfuration

A technology of ammonium sulfate and ammonium sulfite, which is applied in the field of comprehensive treatment to achieve the effects of comprehensive utilization, elimination of environmental pollution, and realization of resources

Inactive Publication Date: 2007-06-20
柴焕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Similarly, the final product of this prior patent is only ammonium sulfate solution, which is only used for direct compounding of chemical fertilizers

Method used

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  • Integral method and apparatus for continuous ammonium-sulfate production and flue desulfuration
  • Integral method and apparatus for continuous ammonium-sulfate production and flue desulfuration

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0070] The desulfurization of embodiment 1, flue gas and desulfurization product produce the continuous process of solid ammonium sulfate

[0071] Please also refer to the flowchart in Figure 1.

[0072] The flue gas from the burner (such as a boiler) enters the desulfurization device after being dedusted by the dust collector. At the same time, the ammonia water used as the desulfurization agent is also input into the desulfurization device through the desulfurization agent supply system, and the sulfur dioxide gas in it is reacted during the contact with the flue gas. The mixed aqueous solution of ammonium sulfite and ammonium bisulfite can realize flue gas desulfurization. In this process, it is best to make the ammonia water pass through the atomizer first and then enter the desulfurization device, and fully mix and contact with the flue gas along the flow.

[0073] The desulfurization product enters the dehydration device to separate the flue gas, the aqueous solution is ...

Embodiment 2

[0079] Embodiment 2, the concrete structure of oxidation device and oxidation reaction

[0080] Please refer to Fig. 2-Fig. 4, which are schematic diagrams of the reaction device for oxidizing ammonium sulfite solution into ammonium sulfate solution according to the present invention. An air supply pipe 2 is arranged along the inner wall of the tank body 1. As shown in the figure, the air supply pipe 2 is set through the bottom of the tank body and extends upward along the inner wall to communicate with the outside world to form two air or oxygen inlets. Air filtering and muffler device 3 (such as air filter and muffler) are set at the place, and the air supply pipe 2 is provided with an air outlet 4 (see Fig. 2 ) at an appropriate position at the bottom of the tank body; The liquid guide tube 5 of upper end opening, forms reaction chamber 8 between its tube wall and tank inner wall, as shown in Figure 2, in this embodiment, guide tube 5 is positioned at the center of tank bod...

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Abstract

A process for desulfurizing fume and continuously preparing ammonium sulfate from the desulfurized product includes such steps as filling ammonia water in fume, reaction between ammonia water and SO2 in fume to generate the mixed solution of ammonium sulfite and ammonium hydrogen sulfite, adding ammonia, reacting on ammonium hydrogen sulfite to generate ammonium sulfite, oxidizing reaction between the solution of ammonium sulfite and air or oxygen to generate the solution of ammonium sulfate, evaporating for concentrating while crystallizing, centrifugal separation and drying.

Description

technical field [0001] The present invention relates to the comprehensive treatment technology of flue gas discharged from combustion devices such as boilers, especially to the method of flue gas desulfurization and the post-treatment technology of desulfurization products, and more specifically to the ammonia desulfurization of flue gas and the comprehensive utilization of desulfurization products An integrated method for continuous production of ammonium sulfate products and related production equipment and systems. Background technique [0002] my country is a country that burns coal as its main energy source. Soot-type air pollution dominated by sulfur oxides and soot has always been dominant. It has become one of the countries with the most serious sulfur oxide pollution in the world. At this stage, effective Treatment technology realizes desulfurization treatment of flue gas and minimizes air pollution is the basic requirement for environmental protection. So far, a va...

Claims

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Application Information

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IPC IPC(8): B01D53/50
Inventor 柴正和
Owner 柴焕
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