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Novel zinc oxide desulfurization method and device

A desulfurization equipment and zinc oxide technology, applied in the field of desulfurization, can solve the problems of difficulty in recycling, low concentration of by-products, unstable absorption rate of zinc oxide desulfurization, etc.

Inactive Publication Date: 2012-07-18
ZHEJIANG NANHUA ANTICORROSION EQUIP
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Problems solved by technology

[0004] The present invention provides a novel zinc oxide desulfurization method and its equipment, which mainly solve the technical problems existing in the prior art, such as unstable absorption rate of zinc oxide desulfurization, easy blockage of pipelines, low concentration of by-products, difficulty in recycling, etc.

Method used

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  • Novel zinc oxide desulfurization method and device
  • Novel zinc oxide desulfurization method and device

Examples

Experimental program
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Embodiment

[0033] Embodiment: a kind of novel zinc oxide desulfurization method of this example, its step is:

[0034] a. The zinc oxide powder is transported to the high-level silo 1 through the elevator 23, and the zinc oxide powder in the high-level silo is transported to the screw conveyor 24 through air vibration or scraping and stirring, and then transported to the slurry mixing tank by the screw conveyor In 2, process water is added into the slurry mixing tank to form a zinc oxide slurry, the concentration of the zinc oxide slurry is 20%, and the zinc oxide slurry that has been mixed enters the slurry storage tank 3 for storage;

[0035] b. The zinc oxide slurry in the slurry storage tank is directly pumped by the slurry pump 20 into the circulation pipeline 4 connected with the washing tower 6, the zinc oxide slurry enters the washing pipe 7 from the circulation pipeline, and the upper part of the washing pipe is passed into the fume to be treated. Gas, zinc oxide slurry 90o si...

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Abstract

The invention relates to a desulfurization method, and in particular relates to a novel zinc oxide desulfurization method and device. The invention mainly solves the technical problems of the prior art that the zinc oxide desulfurization absorption rate is unstable, the pipeline is easy in blockage, the concentration of by-products is low, reuse is difficult, etc. The method comprises the following steps of: adding zinc oxide powder in a slurry-preparing trough to prepare zinc oxide slurry, then pumping the zinc oxide slurry in a circulating pipeline which is communicated with a washing tower, sending the zinc oxide slurry into a washing pipe through the circulating pipeline, injecting the flue gas to be treated in the upper part of the washing pipe, respectively spraying the zinc oxide slurry to a flue gas position at 90 degree and 180 degree reversedly to mix, conveying the slurry from the washing tower to a belt filter to filter, then performing an acid decomposition reaction in an acid decomposition reaction kettle, and finally sending the product into a filter press for filter pressing and roasting.

Description

technical field [0001] The invention relates to a desulfurization method, in particular to a novel zinc oxide desulfurization method and equipment thereof. Background technique [0002] At present, there are more than a dozen commonly used flue gas desulfurization methods put into operation in my country, among which wet desulfurization is stable and efficient, and is the most widely used. Wet desulfurization mainly includes: lime (stone) / gypsum method, sodium-calcium double-alkali method, ammonia-soda method, magnesium oxide method and zinc oxide method, accounting for more than 85% of the total desulfurization amount. Dry, semi-dry, and wet desulfurization methods have unique advantages and disadvantages. Mature technology, meeting the requirements of desulfurization rate, stable operation, low cost, convenient source of raw materials, and no transfer of pollution sources are the ideas for enterprises to choose desulfurization solutions. [0003] Zinc oxide desulfurizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50B01D53/80B01D53/96
Inventor 陈晓宇郑燕云金可刚
Owner ZHEJIANG NANHUA ANTICORROSION EQUIP
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