Sulfur particle flocculating agent applicable to iron-based desulfurizing solution

A technology of sulfur particles and flocculants, applied in the field of gas purification, can solve the problems of decreased desulfurization rate, long settling time, tower blockage, etc., and achieve the effect of reducing the content of sulfur particles, promoting the separation of sulfur, and accelerating the settling speed.

Inactive Publication Date: 2015-12-30
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Although the above methods increase the particle size of sulfur particles, the particle size of sulfur particles is small, the suspension rate of sulfur is high, and the settling time is long. A large number of suspended sulfur particles seriously affect the filterability of sulfur when absorbing hydrogen sulfide, and the absorption process in situ The formed sulfur blocks the absorber, and is not conducive to the gas-liquid mass transfer in the absorption process, resulting in a decrease in the desulfurization rate and prone to tower blockage

Method used

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  • Sulfur particle flocculating agent applicable to iron-based desulfurizing solution
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  • Sulfur particle flocculating agent applicable to iron-based desulfurizing solution

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Embodiment 1

[0040] A sulfur particle flocculant suitable for complex iron desulfurization liquid, composed of the following components: decyl alcohol 60mg / L, cetyl alcohol 60mg / L, chitosan 10mg / L, sublimated sulfur 10mg / L, PAM 4mg / L , sodium silicate 5mg / L. Introduce H at a concentration of 2000ppm into the self-made complex iron desulfurization solution 2 S gas to generate sulfur particles, and measure the suspended sulfur particle size, settled sulfur particle size, flocculation rate, and settling time in the desulfurized rich liquid. The experimental results are shown in Table 1.

Embodiment 2

[0042] A sulfur particle flocculant suitable for complex iron desulfurization liquid, consisting of the following components: AlCl 3 20mg / L, polyethylene glycol ether 40mg / L, sublimated sulfur 10mg / L, PAM 4mg / L, sodium silicate 5mg / L. Introduce H at a concentration of 2000ppm into the self-made complex iron desulfurization solution 2 S gas to generate sulfur particles, and measure the suspended sulfur particle size, settled sulfur particle size, flocculation rate, and settling time in the desulfurized rich liquid. The experimental results are shown in Table 1.

Embodiment 3

[0044] A sulfur particle flocculant suitable for complex iron desulfurization liquid, consisting of the following components: AlCl 3 40mg / L, decyl alcohol 60mg / L, cetyl alcohol 60mg / L, polyethylene glycol ether 40mg / L, chitosan 40mg / L, sublimated sulfur 10mg / L. Introduce H at a concentration of 2000ppm into the self-made complex iron desulfurization solution 2 S gas to generate sulfur particles, and measure the suspended sulfur particle size, settled sulfur particle size, flocculation rate, and settling time in the desulfurized rich liquid. The experimental results are shown in Table 1.

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Abstract

The invention discloses a sulfur particle flocculating agent applicable to iron-based desulfurizing solution. The sulfur particle flocculating agent is composed of a flocculation initiating agent, a flocculation coagulating agent and a flocculation settling agent. By addition of the sulfur particle flocculating agent into complex iron desulfurizing solution, sulfur particles generated in a desulfurizing process can be flocculated and settled in a settling tank spontaneously, and consequently the sulfur particles can be separated out to prevent tower blockage and realize reclaiming of by-product sulfur.

Description

technical field [0001] The invention belongs to the technical field of gas purification, and in particular relates to a sulfur particle flocculant suitable for iron-based desulfurization liquid and a use method thereof. Background technique [0002] In the traditional wet oxidation desulfurization process, due to the rapid mixing of a large amount of gas in the solution and the reaction solution, a gas-liquid-solid suspension is formed, resulting in extremely fine sulfur particles, which are attached to the small bubbles in the solution and float to the surface. The liquid surface forms a sulfur foam layer, which hinders the complete settlement and recovery of sulfur, making filtration difficult; at the same time, the equipment is prone to tower blockage. [0003] The prior art relevant to the present invention is as follows: [0004] 1) US3622273 and US3676356 describe adding alkenol, fatty alcohol, thiosulfate, phosphate and their derivatives to the desulfurization liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/01B01D53/14C01B17/05
Inventor 刘有智罗莹申红艳袁志国郭慧冬祁极冰
Owner ZHONGBEI UNIV
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