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Desulfurizing agent and application thereof

A desulfurizer and calcium olivine technology, applied in the field of desulfurizers, can solve the problems of low desulfurization efficiency, large cost input, low quicklime activity, etc., and achieve the effects of improving comprehensive utilization rate, improving economic benefits and reducing input.

Active Publication Date: 2016-02-17
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to maintain the normal operation of the desulfurization system of the magnesium smelting plant, the consumption of lime is about 3-4 tons a day, and the desulfurization agent accounts for 48% of the total desulfurization cost. According to the market price of lime 300 yuan / ton, the annual investment in the desulfurization system is about 680,000 to 920,000 yuan, the cost investment is very large
Moreover, the activity of quicklime is not high, and the desulfurization efficiency is not high

Method used

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  • Desulfurizing agent and application thereof
  • Desulfurizing agent and application thereof
  • Desulfurizing agent and application thereof

Examples

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Embodiment 1

[0096] combine figure 2 , pour the waste B produced in the production process directly into the dissolving tank 1, and at the same time put in tap water to fill the dissolving tank 1, and stir continuously with a stirrer to promote the dissolution of the waste B. The net enters the regeneration pool 2 by gravity flow. Add an appropriate amount of waste material A to the adjustment tank 4, so that the pH value of the slurry in the adjustment tank 4 is around 12. The slurry with adjusted pH value is pumped into the desulfurization tower 12 by the circulating pump 9, and desulfurization reaction occurs with the flue gas entering the flue gas inlet 10 in the desulfurization zone 6, and the purified flue gas passes through the demister 7 and is discharged from the top 11 of the desulfurization tower Into the chimney, the slurry that has absorbed sulfur dioxide enters the regeneration tank 2 through gravity flow at the bottom of the desulfurization tower, and mixes with the alkali...

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Abstract

The invention discloses a desulfurizing agent and application thereof. The desulfurizing agent comprises a component A and a component B, wherein the component A is a catalyst and the component B is a desulfurizing and activating agent. The component A comprises MgO, CaO, dolomite and CaCO<3>; the component B comprises dicalcium silicate and calcium olivine. The desulfurizing agent comprises the component A and the component B, and the component A is from smoke generated in the process of calcining the raw material dolomite at the temperature of 1423-1473 K; the component B is from residues left after pellets made of calcined dolomite, silicon iron and fluorite are subjected to high temperature calcination in a reduction furnace; the component A serves as the active catalyst, the component B serves as the desulfurizing and activating agent, the component A and the component B are mixed together and jointly serve as the desulfurizing agent, the desulfurization activity of the component B is catalyzed through adding of the component A, desulfurization efficiency is improved, meanwhile, the combined action of calcium groups and magnesium groups is utilized, and a new path is opened up for the desulfurization technology.

Description

technical field [0001] The invention relates to a desulfurizing agent and its application. Specifically, the waste material in the Pidgeon process for smelting magnesium is recycled to make a desulfurizing agent, which is then applied to flue gas desulfurization, which is a desulfurizing agent and its application. Background technique [0002] At present, the main way to produce metal magnesium in China is the Pidgeon method, which is closely related to China's rich magnesium ore resources, energy, auxiliary materials and cheap labor. With the popularization and promotion of Pidgeon method magnesium smelting technology in my country, my country's magnesium production has reached 873,800 tons in 2014 from 5,300 tons in 1990, which can be described as a leap forward. At the same time, due to the inherent defects of the Pidgeon process and the lagging behind in technological innovation in my country's magnesium smelting industry, my country's magnesium smelting industry still h...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/78B01D53/50C22B26/22
CPCY02P10/20
Inventor 肖勇强杨洋王怡吴松恒
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY