Flue gas desulfurization treatment technology by utilizing hydrogen peroxide method and desulfurization treatment system of flue gas desulfurization treatment technology

A hydrogen peroxide method and treatment process technology, applied in the field of flue gas desulfurization, can solve the problems of unstable ammonium sulfite, incomplete oxidation, secondary pollution, etc., achieve strong activity, less supporting equipment, and save investment costs Effect

Pending Publication Date: 2017-05-24
山东圣大环保工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxidation system has incomplete oxidation, which will be accompanied by some shortcomings of ammonium sulfite. Ammonium sulfite itself is not stable, and it may decompose to produce SO after being exposed to sunlight or impact. 2 and CO 2 , forming secondary pollution, thus further causing a vicious circle of environmental pollution

Method used

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  • Flue gas desulfurization treatment technology by utilizing hydrogen peroxide method and desulfurization treatment system of flue gas desulfurization treatment technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment according to figure 1 The structure of the desulfurization treatment system is connected with each instrument and equipment, and the operation is carried out according to the above-mentioned desulfurization treatment process steps and the parameters; the entire operation process is controlled by a control system of a programmable logic controller (PLC), and the control room does not need to be equipped with conventional monitoring equipment , The monitoring and control of the device are all realized by PLC.

[0045] The sulfur dioxide content of the sulfuric acid tail gas intake in this embodiment is 1600mg / Nm 3 , adjust the temperature of sulfuric acid tail gas to be 60°C, the inlet pressure to be 1500Pa, and the oxygen content to be 4%. Through theoretical calculation and in conjunction with the concentration of the hydrogen peroxide solution absorbent used in the test, it is determined to be 0.1-1.0%. The hydrogen peroxide solution used in this embodi...

Embodiment 2

[0055] This embodiment also presses figure 1 The shown structure is connected to each instrument and equipment, and the instrument and equipment used are the same as in Example 1, and the operation process and steps are also the same as in Example 1. The difference from Example 1 is that the inlet temperature of the sulfuric acid tail gas is 70 ° C. The hydrogen peroxide solution absorbent concentration is 0.5% in the absorption layer 4 of the reaction absorption tower 1, and the sulfuric acid concentration in the absorption layer remains on 25%, and other used parameters are all identical with embodiment 1. After being treated by the desulfurization system, the concentration of sulfur dioxide is less than 200mg / Nm 3 , The desulfurization rate is greater than 98%.

Embodiment 3

[0057] This embodiment also presses figure 1 The shown structure is connected to each instrument and equipment, and the instrument and equipment used, the operation process and the steps are the same as in Example 1, the difference is that the inlet temperature of the sulfuric acid tail gas is 80 ° C, and the peroxidation in the absorption layer 4 of the reaction absorption tower 1 The hydrogen solution absorbent concentration is 1%, and the sulfuric acid concentration in the absorption layer 4 is maintained at 30%. After being treated by the desulfurization system, the concentration of sulfur dioxide is less than 200mg / Nm 3 , The desulfurization rate is greater than 98%.

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Abstract

The invention provides a flue gas desulfurization treatment technology by utilizing a hydrogen peroxide method and a desulfurization treatment system of the flue gas desulfurization treatment technology. The flue gas desulfurization treatment technology comprises the technological steps of regulating parameters of sulfuric acid tail gas; forming mixed gas; removing sulfur dioxide; recycling a dilute sulfuric acid solution; discharging standardized flue gas to atmosphere; and the like. The desulfurization treatment system comprises a reaction absorption tower which is in a single-tower four-layer design, a hydrogen peroxide storage tank, a circulating pump, a circulating tank and a chimney, wherein four layers of the reaction absorption tower are a demisting layer, a circulating solution chamber, an absorption layer and a gas mixing chamber. According to the flue gas desulfurization treatment technology by utilizing the hydrogen peroxide method and the desulfurization treatment system, disclosed by the invention, the technological process is simple and short, the control is convenient, the operability is strong, and the efficiency is high; associated equipment of the system is less, operators have no need to be additionally added, the investment cost, the operating cost and the land occupation space are effectively reduced, 98 percent or more of desulfurization efficiency can be realized, the problem of tower plugging caused by crystallization does not exist, secondary processing does not require to be carried out on a byproduct-dilute sulfuric acid, the recovery cost is low, new three-waste products are not generated during the whole production process, and no secondary pollution exists.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization, and in particular relates to a hydrogen peroxide flue gas desulfurization treatment process and a desulfurization treatment system thereof. Background technique [0002] Sulfur oxides and nitrogen oxides have become the main air pollutants in my country, and have caused serious damage to the ecological environment in various forms such as acid rain and smog. harm. my country's sulfur dioxide (SO 2 ) is mainly from the huge market demand for sulfuric acid in my country and the sulfur dioxide discharged from the production by-products of some related industrial enterprises. The treatment of sulfur dioxide in sulfuric acid tail gas is a major issue related to environmental protection and economic benefits. 2 The focus of emission reduction. [0003] At present, there are many methods for desulfurization of sulfuric acid tail gas in my country's sulfuric acid industry, including am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50B01D53/78
CPCB01D53/507B01D2258/0283
Inventor 王静怡李建军马桂英李英杰何西贵
Owner 山东圣大环保工程有限公司
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