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

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

Experimental program
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Example Embodiment

[0070] Example 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 scrubbing: the flue gas containing solid adsorbent and elemental sulfur is passed into the scrubbing tower, and the flue gas is washed with a solution, and the flue gas is discharged after being washed and purified;

[0074] 3) Solid-liquid separation: the waste water generated after the flue gas is washed in the scrubber is added to the settling tank to achieve solid-liquid separation to 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 contained in the flue gas ...

Example Embodiment

[0092] Example 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 acid solution, and the flue gas is washed and purified and then discharged;

[0096] 3) Solid-liquid separation: the waste water generated after the flue gas is washed in the scrubber is added to the settling tank to achieve solid-liquid separation to obtain the supernatant and the settled sulfur-containing solid adsorbent.

[0097] 4) Transport the supernatant liquid obtained in step 3) 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 ads...

Example Embodiment

[0103] Example 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 acid solution, and the flue gas is washed and purified and then discharged;

[0107] 3) Solid-liquid separation: the waste water generated after the flue gas is washed in the scrubber is added to the settling tank to achieve solid-liquid separation to obtain the supernatant and the settled sulfur-containing solid adsorbent.

[0108] 4) Transport the supernatant liquid obtained in step 3) to the washing tower for recycling.

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

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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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