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

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

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Example Embodiment

[0070] Example 1. Desulfurization of flue gas and continuous process of producing solid ammonium sulfate from desulfurization products

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

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

[0073] The desulfurization product enters the dehydration device to separate the flue gas, the aqueous solution is sent to the purification device through the water-seal...

Example Embodiment

[0079] Example 2. Specific structure and oxidation reaction of oxidation device

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

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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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