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A compound flue gas desulfurizer

A composite, desulfurizing agent technology, applied in the field of flue gas desulfurization and liquid-gas separation, to achieve the effects of easy purchase, low foaming, and high desulfurization rate

Active Publication Date: 2016-02-03
武汉鸣德宇化环保有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

We absorb SO in the membrane 2 A lot of experimental research work has been done on composite absorbents, and novel and efficient composite absorbents have been proposed, which are currently used in flue gas purification of SO 2 There is no use and report in the field

Method used

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  • A compound flue gas desulfurizer
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  • A compound flue gas desulfurizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Performance evaluation method for the application of flue gas composite desulfurizer in membrane contactor.

[0029] Operating conditions: room temperature (19-22°C), mixed gas pressure 0.11MPa, membrane mass transfer area 1.5m 2 , gas flow rate 0.5-2L / min, liquid flow rate 200-500mL / min.

[0030] Such as figure 1 shown, respectively from N 2 Gas cylinder 1-1 and SO 2 After the gas in the gas cylinder 1-2 is measured by the gas quality control instrument 2, it enters the mixing and stabilizing tank 3 to form SO containing 0.1%-0.6% (volume percentage). 2 Mixed gas, the mixed gas after the air flow is stabilized enters the membrane contactor 4, and the SO in the mixed gas 2 It diffuses through the membrane pores to the other side of the membrane, is absorbed by the composite desulfurizer, and enters the liquid phase. The absorbed gas phase is released from the gas outlet at the other end of the membrane contactor. The desulfurizer in the membrane contactor comes from...

Embodiment 2

[0039] The flue gas compound desulfurizer is an aqueous solution of potassium tartrate / sodium tartrate and ethylenediamine, the total concentration of potassium tartrate / sodium tartrate and ethylenediamine in the aqueous solution is 0.1~5mol / L, potassium tartrate / sodium tartrate and ethylenediamine The molar ratio is 1: (0.5~3).

[0040] The performance evaluation method in Example 1 is used for detection.

[0041] Process operating conditions: room temperature, gas phase pressure 0.11MPa, mixed gas SO 2 Content 0.1%-0.6% (volume percentage), membrane mass transfer area 1.5m 2 , gas velocity: 0.5-2L / min, liquid velocity: 200-500mL / min.

[0042] The performance evaluation results of various desulfurizers under various conditions are shown in Table 1.

[0043] Table 1 Performance evaluation results of compound desulfurizer

[0044]

[0045] The results show that the composite desulfurizer has high adaptability, not only adapts to low-concentration flue gas, but also adapts ...

Embodiment 3

[0047] The flue gas composite desulfurizer is an aqueous solution of potassium tartrate / sodium tartrate and ethoxyethylamine, the total concentration of potassium tartrate / sodium tartrate and ethoxyethylamine in the aqueous solution is 0.1~5mol / L, potassium tartrate / sodium tartrate The molar ratio to ethoxyethylamine is 1: (0.5~3).

[0048] The performance evaluation method in Example 1 is used for detection.

[0049] Process operating conditions: room temperature, gas phase pressure 0.11MPa, mixed gas SO 2 Content 0.1%-0.6% (volume percentage), membrane mass transfer area 1.5m 2 , gas velocity: 0.5-2L / min, liquid velocity: 200-500mL / min.

[0050] The performance evaluation results of various desulfurizers under various conditions are shown in Table 2.

[0051] Table 2 Performance evaluation results of compound desulfurizer

[0052]

[0053] The results show that the composite desulfurizer has high adaptability, not only adapts to low-concentration flue gas, but also ad...

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Abstract

The invention relates to the field of liquid-gas separation, especially to the field of flue gas desulphurization, specifically to a compound desulfurizer for flue gas. The objective of the invention is to provide a sulfur dioxide absorbent used for absorption of a membrane contactor. The compound desulfurizer for flue gas is composed of tartrate and an aqueous solution of organic amine mixed according to a mol ratio of 1: 0.5-3. The compound desulfurizer has the advantages of good chemical stability, small foamability, small viscosity and a wide source, easy purchasing and a low price of raw materials. A desulphurization process using the compound desulfurizer has the advantages of a high mass transfer coefficient, no disturbance during flowing of gas and fluid, small mass transfer resistance, a high desulfurization rate, convenience in operation, great operational flexibility, no secondary pollution and stable running in the membrane contactor.

Description

technical field [0001] The invention relates to the field of liquid-gas separation, in particular to the field of flue gas desulfurization, and more specifically relates to a flue gas composite desulfurizer. Background technique [0002] SO in the flue gas of coal-fired power plants and metallurgical industries 2 It is one of the main pollutants in the atmosphere and the source of acid rain. With the increasing requirements of environmental protection on the emission of air pollutants, in the flue gas desulfurization purification, how to reasonably select the desulfurization process to achieve SO 2 Emissions in line with the national emission standards is a key issue for the healthy development of flue gas desulfurization in coal-fired power plants and metallurgical industries. Therefore, various high-performance SO 2 The development of absorbents is one of the research topics in this field. In recent years, composite absorbents have become a hot topic in the research and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50
Inventor 陆建刚陆春婷陈悦张慧许正文
Owner 武汉鸣德宇化环保有限公司
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