CN104492203A - Gas-liquid-phase medium flue gas dust removal method - Google Patents
Gas-liquid-phase medium flue gas dust removal method Download PDFInfo
- Publication number
- CN104492203A CN104492203A CN201410730306.2A CN201410730306A CN104492203A CN 104492203 A CN104492203 A CN 104492203A CN 201410730306 A CN201410730306 A CN 201410730306A CN 104492203 A CN104492203 A CN 104492203A
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- Prior art keywords
- flue gas
- phase medium
- liquid
- removal method
- liquid phase
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
Abstract
The invention relates to a gas-liquid-phase medium flue gas dust removal method and belongs to the technical field of environmental management. The method comprises the following steps: introducing gas-liquid-phase medium flue gas into an absorption tower, drying by using calcium hydroxide powder, spraying and cooling to the temperature of 45-70 DEG C by using distilled water, spraying an aqueous liquid containing a cationic-anionic surfactant, spraying at a speed of 20mL/min for 3 minutes, adding activated carbon into the produced liquid, adsorbing the impurities, filtering, and precipitating to take out the impurities. According to detection, the dust removal rate in the flue gas is 99 percent, the cost is low, and secondary pollution is avoided.
Description
Technical field
The present invention relates to a kind of liquid phase medium flue gas ash removal method, belong to technical field of environmental management.
Background technology
Along with industrial expansion, metallurgical steel-smelting electric furnace and be that the boiler of fuel gets more and more with raw coal, the dust of these stoves discharge is very large to surrounding environment harm, floating dust is in an atmosphere often containing toxic component, cause great threat to health, after human body sucks dust, the micronic dust being less than 5 μm very easily gos deep into lung, cause toxic pneumonitis and silicosis, sometimes also can cause lung cancer.In addition, adsorbing powder dust can make valuable stock building be corroded on building.Since Beijing in 2011 suffers continuity haze weather, the process of people to dust is more and more paid attention to, and nowadays dust collection method has gravitational dust collection, inertial dust collection, bag-type dust, electrostatic precipitation, wet dust removal etc., these method dedusting costs are high, and dedusting is not thorough, easily causes secondary pollution, the present invention discloses a kind of liquid phase medium flue gas ash removal method, dedusting cost is low, good dedusting effect, and applicability is strong.
Summary of the invention
The present invention is directed to existing technology and provide a kind of liquid phase medium flue gas ash removal method, dedusting cost is low, good dedusting effect.
In order to reach above-mentioned purpose, the technical scheme of employing is as follows:
1, a kind of liquid phase medium flue gas ash removal method:
(1) liquid phase medium flue gas is introduced in absorption tower, carry out drying with calcium oxide;
(2) carry out sprinkling with distilled water again and be cooled to 45-70 DEG C
(3) in flue gas, dedusting agent is being sprayed;
(4) to becoming in the liquid of output to add active carbon, impurity is adsorbed;
(5) filter, precipitation takes out impurity.
Described dedusting agent is the mixed liquor of anion surfactant, cationic surfactant.
Described cationic surfactant is one or both of zephiran or alkyl dimethyl ethylbenzyl ammonium chloride, and anion surfactant is neopelex.
Specific embodiments
Get 1m
3liquid phase medium flue gas sample, dust content is 150mg/m
3pass in absorption tower, drying is carried out with 10g calcium hydroxide powder, carry out after sprinkling is cooled to 45-70 DEG C with distilled water again, spray the aqueous solution of one or both and 1% neopelex containing 1% zephiran or alkyl dimethyl ethylbenzyl ammonium chloride, 3 minutes are sprayed with the speed of 20mL/min, to becoming in the liquid of output to add active carbon, impurity is adsorbed, filter, precipitation takes out impurity, calcium oxide can adsorb remaining pollutant in water, and in flue gas, dust content is 0.20mg/m after testing
3clearance is 99%.
Example 1
Get 1m
3liquid phase medium flue gas sample lead to, dust content is 142mg/m
3enter in absorption tower, drying is carried out with 10g calcium hydroxide powder, carry out after sprinkling is cooled to 70 DEG C with distilled water again, spray the aqueous solution containing 1% zephiran and 1% neopelex, spray 3 minutes with the speed of 20mL/min, to becoming in the liquid of output to add active carbon, impurity is adsorbed, filter, precipitation takes out impurity, and in flue gas, dust content is 0.27mg/m after testing
3clearance is 99%.
Example 2
Get 1m
3liquid phase medium flue gas sample lead to, dust content is 182mg/m
3enter in absorption tower, drying is carried out with 10g calcium hydroxide powder, carry out after sprinkling is cooled to 60 DEG C with distilled water again, spraying the aqueous solution of one or both and 1% neopelex containing 1% zephiran or alkyl dimethyl ethylbenzyl ammonium chloride, spraying 3 minutes with the speed of 20mL/min, to becoming in the liquid of output to add active carbon, impurity is adsorbed, filter, precipitation takes out impurity, and in flue gas, dust content is 0.24mg/m after testing
3clearance is 99%.
Example 3
Get 1m
3liquid phase medium flue gas sample lead to, dust content is 155mg/m
3enter in absorption tower, drying is carried out with 10g calcium hydroxide powder, carry out after sprinkling is cooled to 45 DEG C with distilled water again, spray the aqueous solution containing 0.6% zephiran, 0.4% alkyl dimethyl ethylbenzyl ammonium chloride and 1% neopelex, spray 3 minutes with the speed of 20mL/min, to becoming in the liquid of output to add active carbon, impurity is adsorbed, filter, precipitation takes out impurity, and in flue gas, dust content is 0.21mg/m after testing
3clearance is 99%.
Claims (3)
1. a liquid phase medium flue gas ash removal method, is characterized in that:
(1) liquid phase medium flue gas is introduced in absorption tower, carry out drying with calcium oxide;
(2) carry out sprinkling with distilled water again and be cooled to 45-70 DEG C;
(3) in flue gas, dedusting agent is being sprayed;
(4) to becoming in the liquid of output to add active carbon, impurity is adsorbed;
(5) filter, precipitation takes out impurity.
2. a kind of liquid phase medium flue gas ash removal method according to right power claim 1, is characterized in that: described dedusting agent is the mixed liquor of anion surfactant, cationic surfactant.
3. a kind of liquid phase medium flue gas ash removal method according to right power claim 2, it is characterized in that: described cationic surfactant is one or both of zephiran or alkyl dimethyl ethylbenzyl ammonium chloride, and anion surfactant is neopelex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730306.2A CN104492203A (en) | 2014-12-04 | 2014-12-04 | Gas-liquid-phase medium flue gas dust removal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730306.2A CN104492203A (en) | 2014-12-04 | 2014-12-04 | Gas-liquid-phase medium flue gas dust removal method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104492203A true CN104492203A (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410730306.2A Pending CN104492203A (en) | 2014-12-04 | 2014-12-04 | Gas-liquid-phase medium flue gas dust removal method |
Country Status (1)
| Country | Link |
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| CN (1) | CN104492203A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038724A (en) * | 2019-04-26 | 2019-07-23 | 江苏中科睿赛污染控制工程有限公司 | A kind of gas purification dedusting module |
Citations (6)
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| CN1273876A (en) * | 2000-03-15 | 2000-11-22 | 北京科技大学 | Process for dusting and dsulfurizing fume |
| US20010008620A1 (en) * | 1998-08-17 | 2001-07-19 | Joachim Dohmann | Process for purification of flue gas |
| CN101279194A (en) * | 2008-05-22 | 2008-10-08 | 上海环境保护有限公司 | Method for treating high-temperature industrial waste gas with ice water cool-neutralization wash and absorption method |
| CN101735771A (en) * | 2009-12-01 | 2010-06-16 | 北京精诚博桑科技有限公司 | Dust fall agent for water mist dust fall |
| CN104069702A (en) * | 2014-06-23 | 2014-10-01 | 陈淼 | Efficient desulfurization and dust removal integrated device and dust removing method thereof |
| CN203869073U (en) * | 2014-05-23 | 2014-10-08 | 湖北中油优艺环保科技有限公司 | Device capable of circularly using waste lye for treating rotary kiln smoke |
-
2014
- 2014-12-04 CN CN201410730306.2A patent/CN104492203A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010008620A1 (en) * | 1998-08-17 | 2001-07-19 | Joachim Dohmann | Process for purification of flue gas |
| CN1273876A (en) * | 2000-03-15 | 2000-11-22 | 北京科技大学 | Process for dusting and dsulfurizing fume |
| CN101279194A (en) * | 2008-05-22 | 2008-10-08 | 上海环境保护有限公司 | Method for treating high-temperature industrial waste gas with ice water cool-neutralization wash and absorption method |
| CN101735771A (en) * | 2009-12-01 | 2010-06-16 | 北京精诚博桑科技有限公司 | Dust fall agent for water mist dust fall |
| CN203869073U (en) * | 2014-05-23 | 2014-10-08 | 湖北中油优艺环保科技有限公司 | Device capable of circularly using waste lye for treating rotary kiln smoke |
| CN104069702A (en) * | 2014-06-23 | 2014-10-01 | 陈淼 | Efficient desulfurization and dust removal integrated device and dust removing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038724A (en) * | 2019-04-26 | 2019-07-23 | 江苏中科睿赛污染控制工程有限公司 | A kind of gas purification dedusting module |
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Application publication date: 20150408 |