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Desulfurizer regeneration method with low energy consumption and desulfurization method

A desulfurization agent and low energy consumption technology, which is applied in the field of desulfurization process, can solve the problems of large steam consumption, influence on technology popularization and application, and high energy consumption, and achieve the effect of reducing raw steam consumption, regeneration cost, and regeneration energy consumption

Active Publication Date: 2018-11-02
SINOPEC LUOYANG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing process, there is a problem that a large amount of steam is consumed in the regeneration process of the desulfurizer, and the energy consumption is high, which affects the popularization and application of the technology

Method used

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  • Desulfurizer regeneration method with low energy consumption and desulfurization method

Examples

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Embodiment 1

[0040] This embodiment also provides a desulfurization method, please combine figure 1 , which includes the following steps:

[0041] (1) The high-temperature SO2-containing exhaust gas 1 is in contact with the circulating washing water 3 in the cooling scrubber 2 for cooling, dust removal, and removal of particulate matter and sulfur trioxide and other strong acid gases in the exhaust gas. The cooling and washing tower 2 is an empty tower, and the circulating washing water can also be extracted as the effluent circulating slurry 5, and a wet electrostatic demister 6 is installed on the top of the tower to further remove the mist carried by the quenched exhaust gas.

[0042](2) The quenched and dedusted flue gas 7 after cooling and dedusting enters from the bottom of the absorption tower 8 and contacts with the desulfurizer poor liquid 10 in reverse, the sulfur dioxide in the flue gas is captured, the absorption tower 8 is a packed tower, and the purified exhaust gas 11 passes...

Embodiment 2-3

[0047] The same as the process in Example 1, the difference lies in the process parameters of the operation, and in addition the desorption column in Example 3 is a tray column.

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Abstract

The invention discloses a desulfurizer regeneration method with low energy consumption and a desulfurization method, and relates to the technical field of desulfurization processes. The desulfurizer regeneration method with low energy consumption comprises the following steps: rich desulfurizer liquor after absorbing sulfur dioxide is conveyed to a desorption tower and is heated for desorption through a reboiler at the bottom of the desorption tower; water vapor containing sulfur dioxide and output from the top of the desorption tower is conveyed to a falling-film evaporator, condensed water produced by the reboiler at the bottom of the desorption tower is decompressed and cooled by an expansion valve and conveyed to the falling-film evaporator, and heat energy of materials at the top of the desorption tower is recovered to produce low-pressure vapor; the low-pressure vapor is boosted and heated by mechanical compression and conveyed to the reboiler at the bottom of the desorption tower to serve as a desorption heat source. The desulfurization method comprises the desulfurizer regeneration method with low energy consumption, live steam consumption in desulfurizer regeneration can be reduced remarkably, regeneration cost is reduced, and the method is suitable for wide popularization and application.

Description

technical field [0001] The invention relates to the technical field of desulfurization technology, and in particular to a method for regenerating a low-energy desulfurization agent and a desulfurization method. Background technique [0002] Renewable wet flue gas desulfurization technology is to absorb SO 2 The cyclic desulfurization process of the absorbent is regenerated and reused. This method has the advantage of not generating new pollutants, SO 2 It can be recycled, has the advantages of small footprint, low device investment and operation cost. The method works by using absorbent to absorb SO in the gas 2 , forming SO-rich 2 The rich absorption liquid, and then the absorption rich liquid is regenerated, the regenerated absorbent is recycled, and the released SO 2 Due to the high purity, high value-added products can be produced. [0003] However, in the existing process, there is a problem that a large amount of steam is consumed in the regeneration process of th...

Claims

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Application Information

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IPC IPC(8): B01D53/14B01D1/22B01D1/30
CPCB01D1/22B01D1/30B01D53/1425B01D53/1481B01D2258/0283
Inventor 李朝恒郭荣群陈卫红裴旭东涂先红张凡郭玉涛
Owner SINOPEC LUOYANG TECH CO LTD
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