Wet-process high efficient method for purifying flue gas containing simple substance sulfur

A technology of elemental sulfur and flue gas, which is applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as clogging equipment and destroying the stability of colloidal sulfur, so as to facilitate adsorption, avoid nozzle and circulation pump blockage, and improve The effect of capture efficiency

Active Publication Date: 2018-12-07
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method utilizes the property of solid adsorbent and colloidal sulfur surface charges to attract each other, destroys the stability of colloidal sulfur, improves the removal rate of colloidal sulfur in the washing liquid, and thus solves the problem that colloidal sulfur adheres to the surface of the equipment and blocks the equipment; At the same time, this method has the advantages of high processing efficiency, high value of by-products and stable operation of equipment

Method used

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  • Wet-process high efficient method for purifying flue gas containing simple substance sulfur
  • Wet-process high efficient method for purifying flue gas containing simple substance sulfur
  • Wet-process high efficient method for purifying flue gas containing simple substance sulfur

Examples

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Effect test

Embodiment 1

[0071] A method for high-efficiency wet purification of flue gas containing elemental sulfur, the method comprising the following steps:

[0072] 1) Mixing flue gas and adsorbent: adding solid adsorbent to the flue gas containing elemental sulfur;

[0073] 2) Wet washing: pass the flue gas containing solid adsorbent and elemental sulfur into the washing tower, and use the solution to wash the flue gas, and the flue gas is discharged after being washed and purified;

[0074] 3) Solid-liquid separation: Add the waste water produced after washing the flue gas in the washing tower into the settling tank to realize solid-liquid separation, and obtain the supernatant and the settled sulfur-containing solid adsorbent.

[0075] Wherein, the solid adsorbent described in step 1) is activated carbon. The particle size of the solid adsorbent is 20 μm. The amount of solid adsorbent added is 1.3 times the ratio of the amount of elemental sulfur in the flue gas to the adsorption capacity o...

Embodiment 2

[0093] A method for high-efficiency wet purification of flue gas containing elemental sulfur, the method comprising the following steps:

[0094] 1) Mixing flue gas and adsorbent: adding solid adsorbent to the flue gas containing elemental sulfur;

[0095] 2) Wet scrubbing: the flue gas containing solid adsorbent and elemental sulfur is passed into the scrubber, and the flue gas is washed with an acidic solution, and the flue gas is discharged after being washed and purified;

[0096] 3) Solid-liquid separation: Add the waste water produced after washing the flue gas in the washing tower into the settling tank to realize solid-liquid separation, and obtain the supernatant and the settled sulfur-containing solid adsorbent.

[0097] 4) The supernatant obtained in step 3) is transported to the washing tower for recycling.

[0098] Wherein, the solid adsorbent described in step 1) is activated carbon. The particle size of the solid adsorbent is 10 μm. The amount of solid adsorb...

Embodiment 3

[0104] A method for high-efficiency wet purification of flue gas containing elemental sulfur, the method comprising the following steps:

[0105] 1) Mixing flue gas and adsorbent: adding solid adsorbent to the flue gas containing elemental sulfur;

[0106] 2) Wet scrubbing: the flue gas containing solid adsorbent and elemental sulfur is passed into the scrubber, and the flue gas is washed with an acidic solution, and the flue gas is discharged after being washed and purified;

[0107] 3) Solid-liquid separation: Add the waste water produced after washing the flue gas in the washing tower into the settling tank to realize solid-liquid separation, and obtain the supernatant and the settled sulfur-containing solid adsorbent.

[0108] 4) The supernatant obtained in step 3) is transported to the washing tower for recycling.

[0109] Wherein, the solid adsorbent described in step 1) is a molecular sieve. The particle size of the solid adsorbent is 50 μm. The amount of solid adsor...

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Abstract

The invention discloses a wet-process high efficient method for purifying flue gas containing simple substance sulfur. The method comprises following steps: (1) adding a solid adsorbent into flue gascontaining simple substance sulfur; (2) then introducing the flue gas containing the solid adsorbent and simple substance sulfur into a washing tower, washing the flue gas by a solution, and after washing and purifying, discharging the flue gas; and (3) after washing, introducing generated wastewater in the washing tower to a setting tank to carry out solid-liquid separation to obtain supernate and precipitated sulfur containing solid adsorbent. The added solid adsorbent can attract charges on the colloidal sulfur surface, the stability of colloidal sulfur is broken, the removal rate of colloidal sulfur in detergent is increased, and solved is the problem that equipment is obstructed by colloidal sulfur adhered on the surface of the equipment.

Description

technical field [0001] The invention relates to a flue gas purification method, in particular to a wet and efficient purification method for elemental sulfur-containing flue gas, which belongs to the field of resource and environmental protection. Background technique [0002] With the development of economic construction, my country pays more and more attention to environmental protection. The emergence of a large number of smog has made people pay more and more attention to air and dust pollution. Among these pollutants, the emission of industrial flue gas occupies a relatively large proportion. Therefore, it is necessary to adopt reasonable and effective desulfurization and denitrification processes for industrial flue gas, so that the flue gas can be discharged after reaching the emission standard. [0003] For the desulfurization of industrial flue gas containing elemental sulfur, the wet desulfurization has fast reaction speed, high efficiency, and high utilization ra...

Claims

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Application Information

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IPC IPC(8): B01D49/00B01D47/06B01D50/00C02F1/52C02F103/18
CPCB01D47/06B01D49/00B01D50/00B01D2258/02B01D2258/0283C02F1/52C02F2001/007C02F2103/18
Inventor 杨本涛魏进超
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD
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