Sulfur flocculation precipitator as well as preparation method and application thereof

A precipitant and flocculation technology, applied in the field of desulfurization, can solve the problem of small particle size of sulfur particles, reduce the generation of sulfur foam, ensure desulfurization efficiency, and achieve good aggregation and sedimentation performance.

Active Publication Date: 2022-05-13
CHINA PETROCHEMICAL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particle size of sulfur particles formed by the sulfur precipitant is still small, and the rate of sulfur precipitation needs to be further improved

Method used

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  • Sulfur flocculation precipitator as well as preparation method and application thereof
  • Sulfur flocculation precipitator as well as preparation method and application thereof
  • Sulfur flocculation precipitator as well as preparation method and application thereof

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preparation example Construction

[0033] The present invention further provides a method for preparing the sulfur flocculation precipitant described in the above scheme, comprising the following steps:

[0034] The glycolipid-type biosurfactant, Tween-type surfactant, low-carbon alcohol and water are mixed to obtain a sulfur flocculation precipitant.

[0035] In the present invention, the mixture is preferably: first the glycolipid biosurfactant and water mixed, and then sequentially added Tween type surfactant and low carbon alcohol.

[0036] The present invention has no special requirements for the specific operating method of the mixing, using a method well known to those skilled in the art, the various components can be mixed evenly, as specific as stirring.

[0037] The present invention further provides the application of the sulfur flocculation precipitant described in the above scheme in wet basic desulfurization.

[0038]In the present invention, the wet basic desulfurization preferably comprises complex...

Embodiment 1

[0041] Preparation of sulfur flocculation precipitant: the use of rhamnolipide, Tween-80, isopropanol and water to prepare sulfur flocculation precipitant, the preparation method is: the rhamnosin and water mixed, and then add Tween-80, and isopropanol, stirred and mixed to obtain sulfur flocculant precipitant. The dosage of each component is shown in Table 1.

[0042] Table 1 Composition and dosage of sulfur flocculant

[0043]

[0044]

Embodiment 2

[0055] Preparation of sulfur flocculation precipitant: the use of isopropanol, mannitol, Tween-60, and water to prepare sulfur flocculation precipitant, the preparation method is: first the mannose lipid and water mixed, and then Tween-60 and isopropanol are added one by one, stirred to form a uniform sulfur flocculant precipitant. The dosage of each component is shown in Table 3.

[0056] Table 3 Composition and dosage of sulfur flocculant precipitant

[0057] compose Dosage Manna glycolipids 90g Twain-60 10g isopropanol 5g water 895g

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Abstract

The invention relates to the technical field of desulfurization, and provides a sulfur flocculation precipitator as well as a preparation method and application thereof. The sulfur flocculation precipitator provided by the invention is prepared from the following components in percentage by mass: 6 to 12 percent of glycolipid type biological surfactant, 0 to 1.5 percent of Tween type surfactant, 0.1 to 1 percent of low-carbon alcohol and the balance of water. The sulfur flocculation precipitator provided by the invention is good in wettability and strong in bridge bond action, and the relatively high wettability can change the hydrophobicity of sulfur, so that the sulfur forms a wetted body, and the adhesion is reduced; the good bridge bond effect can promote the wetted sulfur to rapidly agglomerate, hydrophilic large-particle sulfur is formed, and sulfur sedimentation is accelerated, so that sulfur adhesion and blockage are effectively prevented. Results of the embodiment show that by adopting the sulfur flocculation precipitator obtained by the invention, sulfur particles can be quickly gathered and precipitated, the precipitation time is as low as 18s, and the particle size of the generated sulfur particles is as high as 150mu m.

Description

Technical field [0001] The present invention relates to the field of desulfurization technology, in particular to a sulfur flocculant precipitant and preparation method and application thereof. Background [0002] Wet alkaline desulfurization refers to the process of absorbing hydrogen sulfide from an alkali aqueous solution and directly converting hydrogen sulfide into elemental sulfur. The sulfur particles produced in the desulfurization process have a small particle size, not easy to agglomerate and precipitate, so it will float mainly, sulfur floats on the surface of the desulfurization liquid, easy to form a large amount of sulfur foam, affecting production, while this kind of sulfur is easy to adhere to the pipe wall, the risk of sulfur plugging in the pipeline is large, and the equipment needs to be often cleared and repaired. Therefore, whether the sulfur can be treated in time has become the key to the continuous and smooth operation of the process. [0003] Patent CN11...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/01B01D53/52B01D53/73B01D53/78B01D53/84C01B17/02
CPCB01D53/52B01D53/78B01D53/84B01D53/73C01B17/0205B01D21/01B01D2251/95Y02A50/20
Inventor 李金环穆廷桢朱红彬邢建民刘海丽杨茂华张硕琳王伟健傅莉董金婷张宁宁张建
Owner CHINA PETROCHEMICAL CORP
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