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High efficient desulfurizing agent with low energy consumption

A desulfurizer and defoamer technology, applied in the field of high-efficiency and low-energy-consumption desulfurizers, can solve problems such as insufficient desulfurization depth of liquid hydrocarbons, and achieve the effects of reducing operating costs, good thermal stability, and good absorption selectivity

Inactive Publication Date: 2013-06-19
JIANGSU CHUANGXIN PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the improvement of processing capacity or the blending of high-sulfur crude oil in the refineries of Sinopec Corporation, the desulfurization depth of dry gas and liquid hydrocarbons is insufficient, so it is necessary to provide a desulfurizer with high efficiency and low energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The formula of desulfurization agent: MDEA 95.5% with a purity of 99.5%, desulfurization defoamer (polyether modified silicone oil, Qingdao Zhongbao Chemical Co., Ltd.) 0.5%, MDEA degradation inhibitor (antioxidant 264, Guangzhou Shengxun Chemical Co., Ltd. Co., Ltd.) 0.5%, organic sulfur adsorbent (sulfolane, Yingkou, Liaoning) 2.5%, isopropanol 1%.

[0036] Mix the above components in proportion to make desulfurizer.

Embodiment 2

[0038] The formula of desulfurization agent: MDEA 95.5% with a purity of 99.5%, desulfurization defoamer (polyether modified silicone oil, Qingdao Zhongbao Chemical Co., Ltd.) 0.5%, MDEA degradation inhibitor (antioxidant 264, Guangzhou Shengxun Chemical Co., Ltd. Co., Ltd.) 1%, organic sulfur adsorbent (sulfolane, Yingkou, Liaoning) 2%, isopropanol 1%.

[0039] Mix the above components in proportion to make desulfurizer.

Embodiment 3

[0041] Desulfurization agent formula: 94% MDEA with a purity of 99.5%, desulfurization defoamer (polyether modified silicone oil, Qingdao Zhongbao Chemical Co., Ltd.) 1%, MDEA degradation inhibitor (antioxidant 264, Guangzhou Shengxun Chemical Co., Ltd. Co., Ltd.) 1%, organic sulfur adsorbent (sulfolane, Yingkou, Liaoning) 2%, isopropanol 2%.

[0042] Mix the above components in proportion to make desulfurizer.

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Abstract

The invention discloses a high efficient desulfurizing agent with low energy consumption. The desulfurizing agent contains the following components by mass percent: 93-98% of MDEA (methyldiethanolamine), 0.1-2% of desulfurizing defoaming agent, 0.1-2% of MDEA degradation inhibitor, 0.5-4% of organic sulfur adsorbent and 0.1-2% of hydrotropy agent. The novel desulfurizing agent can work under high concentration without foaming, and has high desulfurizing efficiency for H2S (hydrogen sulfide); the desulfurizing agent is also capable of desulfurizing the organic sulfur; the novel desulfurizing agent has large sulfur capacity and high using concentration and is a saving type solvent; and the novel desulfurizing agent has small corrosion to a gasometer, and does not degrade, foam, and discolor easily.

Description

Technical field: [0001] The invention belongs to the field of petrochemical technology. Specifically design a desulfurizer with high efficiency and low energy consumption. In the refining and petrochemical industry, desulfurizers are used to remove hydrogen sulfide from refinery gases (catalytic dry gas, liquefied gas, hydrogenated dry gas, tail gas, sulfur hydrogen reduction gas, natural gas). technical background: [0002] my country's refineries often use alkaline N-methyldiethanolamine (MDEA) as absorbent, and H 2 S, CO 2 Wait for the acid gas to be absorbed and desorbed and then removed. Due to CO 2 In most cases, it is not harmful and there is no need to remove it. If only H can be selectively removed 2 S, to reduce CO 2 The amount of removal must be able to reduce the amount of solvent circulation, reduce equipment size, investment and operating costs, and reduce energy consumption for regeneration; moreover, in the acid gas after desorption, H 2 The concentr...

Claims

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Application Information

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IPC IPC(8): B01D53/14
Inventor 葛晓军闵敏黄磊
Owner JIANGSU CHUANGXIN PETROCHEM
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