CN103041685A - Sulfur and dust removing method for boiler - Google Patents
Sulfur and dust removing method for boiler Download PDFInfo
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- CN103041685A CN103041685A CN2012103870500A CN201210387050A CN103041685A CN 103041685 A CN103041685 A CN 103041685A CN 2012103870500 A CN2012103870500 A CN 2012103870500A CN 201210387050 A CN201210387050 A CN 201210387050A CN 103041685 A CN103041685 A CN 103041685A
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Abstract
The invention discloses a sulfur and dust removing method for a boiler. The method comprises the following steps: introducing industrial boiler exhaust gas into a sulfur and dust removing purifying tower under the action of an induced draft fan; injecting spray water having the pH ranging from 8 to 12 to the tower by a circulating water pump for multiple-stage spraying so that dust and SO2 in the exhaust gas are removed, and discharging the exhaust gas without dust and sulfur to high altitude by a chimney; flowing sulfur and dust removal sewage into a settling pond; settling the dust in the settling pond and then clearing away the dust out of the pond by a dust remover, while flowing the clear water into a clarification tank; and because the pH value of the spray water is reduced after sulfur removal, quantitatively adding NaOH alkali liquor to water so that the spray water is capable of keeping the pH between 8-12 all the time, thereby guaranteeing the sulfur removal effect. The method provided by the invention is reasonable in process flow, reliable and excellent in effect, has dual effects of dust removal and sulfur removal, and has wide application prospect in industrial enterprises.
Description
Technical field
The present invention discloses a kind of boiler environmental protection operation process method, particularly a kind of process of boiler desulfurization dedusting, is applicable to the desulfurization dust-removal system of industrial steam boiler toxic emission.
Background technology
The flue gas that coal-fired steam boiler produces is the principal element that causes China's air pollution due to coal combustion.Dust in the flue gas is the main source of atmosphere pollution.In order to reduce flue gas to the pollution of atmosphere, must carry out many-sided comprehensive regulation.On the one hand, adopt the combustion technology of high-efficiency low-pollution, improve the emblem of A material and burn process, the control flue dust, generation, fundamentally reduce flue gas to the pollution of atmosphere; On the other hand. adopt cost-effective flue gases purification, improve the performance of smoke eliminator, the discharging of pollutant in the control flue gas.Adopting cleaner to separate and capture dust in the flue gas, is that one of measure is wanted in Air Pollution prevention and control upper.China's coal-fired steam boiler cleaner kind is a lot of before mouthful, and technical performance is also improving constantly, and has obtained certain achievement aspect smoke and dust treatment.But aggregate level is also not high, still has many problems, demands further improvement and perfection urgently.
At present, the inertial dust collection method that the industrial steam boiler dedusting is adopted, efficiency of dust collection is low, can only remove the grit of greater particle size, and the dust that particle diameter is less still can cause air pollution by smoke stack emission in atmosphere, and efficiency of dust collection only reaches 60%, can not make flue gas desulfurization.
Summary of the invention
Problem to be solved by this invention is, overcomes the deficiencies in the prior art, and a kind of boiler desulfurization dedusting technique is provided.The method not only flow scheme design is reasonable, and method is reliable, and dust-removal and desulfurizing is respond well.
For achieving the above object, the invention discloses following technology contents:
A kind of method of boiler desulfurization dedusting is characterized in that: Industrial Boiler waste gas and flue dust enter desulfurization dedusting purification tower under the effect of air-introduced machine, and water circulating pump is squeezed into the shower water of pH=8～12 and carried out multi-stage spray in the tower, removes dust and SO in the waste gas
2, through the waste gas of dedusting and desulfurization by the chimney high altitude discharge; Dust-removal and desulfurizing sewage flows into sedimentation basin, and dust is cleared up outside the pond by Machine for cleaning-out ash after the sedimentation basin precipitation, and clear water flows into depositing reservoir, and the shower water pH value descends after the desulfurization, and quantitative Xiang Shuizhong adds NaOH alkali lye, makes shower water keep all the time pH=8～12.
Boiler desulfurization dust collection method of the present invention is characterized in that: boiler smoke (1) enters purifying column (2), carries out multi-stage spray through shower water in tower, removes dust and SO in the waste gas
2, dust-removal and desulfurizing sewage (3) flows into sedimentation basin (4), and dust is cleared up outside the pond by Machine for cleaning-out ash after the sedimentation basin precipitation, and supernatant flows into depositing reservoir (5), and shower water pH value descends after the desulfurization, needs quantitative Xiang Shuizhong to add alkali lye Na (OH)
2, make shower water keep all the time pH=8～12, water circulating pump (7) is squeezed into purifying column with shower water (8) again, so move in circles, air-introduced machine (9) will be through the waste gas of dedusting and desulfurization by chimney (10) high altitude discharge to atmosphere (11).
It mainly is to adopt the aqueous solution of NaOH to mediate that shower water is kept pH=8～12.
Good effect of the present invention
(1) the present invention improves former flow process, the inertial dust collection method of former flow process is changed into take off
The sulphur dust-removing and purifying method, dust removing effects significantly improves, and efficiency of dust collection can reach more than 98%.
(2) adopt the shower water of pH=8～12 to carry out the multi-stage spray desulfurization, desulfuration efficiency can reach more than 90%, and desulfurized effect is good.
A kind of boiler desulfurization dedusting technique design process flow is reasonable, and method is reliable, and efficiency of dust collection is high, desulfurized effect is good, and has the dust-removal and desulfurizing double effects, has broad application prospects for industrial enterprise.
Accompanying drawing
Fig. 1 is boiler desulfurization dust arrester schematic diagram;
Fig. 2 is boiler desulfurization dust collecting process flow chart;
Fig. 1 explanation: accompanying drawing number is: 1, water seal tank, 2, the ash discharge water pipe, 3, conical hopper, 4, gas approach, 5, barrel, 6, overflow groove, 7, exhanst gas outlet, 8, annular water main, 9, subfeeder, 10, upper brace, 11, the plate mouth, 12, lower platform.
Fig. 2 explanation: accompanying drawing number is: 1, boiler smoke, 2, purifying column, 3, dedusting sewage, 4, sedimentation basin, 5, depositing reservoir, 6, alkali lye (NaOH), 7, water circulating pump, 8, shower water (pH ﹦ 8-12)
9, air-introduced machine, 10, chimney, 11, atmosphere.
The specific embodiment
In order to explain more fully enforcement of the present invention, provide following preparation method's embodiment.These embodiments only are to explain rather than limit the scope of the invention.The used reagent of the present invention all has commercially available.
Employing of the present invention, boiler waste gas and flue dust enter the water film dedusting purifying column under the effect of air-introduced machine, circulating pump is squeezed into the shower water of pH=8～10 and carried out multi-stage spray in the tower, removes dust and SO in the waste gas
2, through the waste gas of dedusting and desulfurization by the chimney high altitude discharge; Dust-removal and desulfurizing sewage flows into sedimentation basin, dust is cleared up outside the pond by Machine for cleaning-out ash after the sedimentation basin precipitation, clear water flows into depositing reservoir, the shower water pH value descends after the desulfurization, need quantitative Xiang Shuizhong to add NaOH alkali lye, NaOH reagent has commercially available), make shower water keep all the time pH=8～10, thereby guarantee desulfurized effect.
SO in the boiler waste gas
2Eliminate in the steps below with flue dust:
Contrast test (with a collection of raw material)
(1) conventional coal-burning boiler inertial dust collection method: the inertial dust collection method is to utilize ash-laden gas impact baffle plate or air-flow to change direction and the inertia force that produces, the method that grit is separated from air-flow.The steps include: that boiler smoke enters flue by chimney intake under the air-introduced machine effect, flue dust impacts every petticoat pipe and changes direction, and inertia force is separated larger grit from flue gas, and the flue gas of process dedusting arrives atmosphere by smoke stack emission.
(2) moisture film desulfurization and dedusting method of the present invention: method step is seen embodiment 2:
The contrast test data
Claims (2)
1. the method for a boiler desulfurization dedusting, it is characterized in that: Industrial Boiler waste gas and flue dust enter desulfurization dedusting purification tower under the effect of air-introduced machine, and water circulating pump is squeezed into the shower water of pH=8～12 and is carried out multi-stage spray in the tower, removes dust and SO in the waste gas
2, through the waste gas of dedusting and desulfurization by the chimney high altitude discharge; Dust-removal and desulfurizing sewage flows into sedimentation basin, and dust is cleared up outside the pond by Machine for cleaning-out ash after the sedimentation basin precipitation, and clear water flows into depositing reservoir, and the shower water pH value descends after the desulfurization, and quantitative Xiang Shuizhong adds NaOH alkali lye, makes shower water keep all the time pH=8～12.
2. boiler desulfurization dust collection method claimed in claim 1, it is characterized in that: boiler smoke (1) enters purifying column (2), carries out multi-stage spray through shower water in tower, removes dust and SO in the waste gas
2Dust-removal and desulfurizing sewage (3) flows into sedimentation basin (4), dust is cleared up outside the pond by Machine for cleaning-out ash after the sedimentation basin precipitation, supernatant flows into depositing reservoir (5), and shower water pH value descends after the desulfurization, needs quantitative Xiang Shuizhong to add alkali lye NaOH, make shower water keep all the time pH=8～12, water circulating pump (7) is squeezed into purifying column with shower water (8) again, so move in circles, air-introduced machine (9) will be through the waste gas of dedusting and desulfurization by chimney (10) high altitude discharge to atmosphere (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103870500A CN103041685A (en) | 2012-10-15 | 2012-10-15 | Sulfur and dust removing method for boiler |
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|---|---|---|---|
| CN2012103870500A CN103041685A (en) | 2012-10-15 | 2012-10-15 | Sulfur and dust removing method for boiler |
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| CN103041685A true CN103041685A (en) | 2013-04-17 |
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| CN2012103870500A Pending CN103041685A (en) | 2012-10-15 | 2012-10-15 | Sulfur and dust removing method for boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742114A (en) * | 2014-01-23 | 2014-04-23 | 山东成林高新技术产业有限公司 | Device and method for thermally extracting oil by means of injecting steam and flue gas of same boiler in mixed manner |
| CN104941421A (en) * | 2014-03-28 | 2015-09-30 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | Internal combustion engine, and method of removing sulphur oxides from exhaust gas |
| CN113908679A (en) * | 2021-09-26 | 2022-01-11 | 江苏久发环境科技有限公司 | Synthetic gas purification method |
| CN114870542A (en) * | 2021-11-04 | 2022-08-09 | 赣州齐畅新材料有限公司 | Smoke waste gas treatment method for water film dust removal by using lime water |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491710Y (en) * | 2000-10-29 | 2002-05-15 | 萧绍辉 | Coal smoke dusting and desulfurizing appts. |
| CN2529090Y (en) * | 2002-02-08 | 2003-01-01 | 王晓利 | Wet desulfurization cleaning device for fume of boiler |
| CN201840983U (en) * | 2010-11-08 | 2011-05-25 | 深圳市翔宇环保科技有限公司 | Smoke gas dust removal and desulphurization device |
| CN201912876U (en) * | 2010-12-17 | 2011-08-03 | 汪旭 | Water-bath granite and desulfurizing tower two-stage dedusting and desulfurizing device |
| CN102380297A (en) * | 2010-09-02 | 2012-03-21 | 白福有 | Cylindrical wet-process smoke dedusting and desulfurizing device |
| CN202289857U (en) * | 2011-10-28 | 2012-07-04 | 汪晋武 | Desulphurization and dust removal device for refire kiln |
-
2012
- 2012-10-15 CN CN2012103870500A patent/CN103041685A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491710Y (en) * | 2000-10-29 | 2002-05-15 | 萧绍辉 | Coal smoke dusting and desulfurizing appts. |
| CN2529090Y (en) * | 2002-02-08 | 2003-01-01 | 王晓利 | Wet desulfurization cleaning device for fume of boiler |
| CN102380297A (en) * | 2010-09-02 | 2012-03-21 | 白福有 | Cylindrical wet-process smoke dedusting and desulfurizing device |
| CN201840983U (en) * | 2010-11-08 | 2011-05-25 | 深圳市翔宇环保科技有限公司 | Smoke gas dust removal and desulphurization device |
| CN201912876U (en) * | 2010-12-17 | 2011-08-03 | 汪旭 | Water-bath granite and desulfurizing tower two-stage dedusting and desulfurizing device |
| CN202289857U (en) * | 2011-10-28 | 2012-07-04 | 汪晋武 | Desulphurization and dust removal device for refire kiln |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742114A (en) * | 2014-01-23 | 2014-04-23 | 山东成林高新技术产业有限公司 | Device and method for thermally extracting oil by means of injecting steam and flue gas of same boiler in mixed manner |
| CN104941421A (en) * | 2014-03-28 | 2015-09-30 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | Internal combustion engine, and method of removing sulphur oxides from exhaust gas |
| CN104941421B (en) * | 2014-03-28 | 2020-01-17 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | Internal combustion engine and method for removing sulfur oxides from exhaust gas |
| CN113908679A (en) * | 2021-09-26 | 2022-01-11 | 江苏久发环境科技有限公司 | Synthetic gas purification method |
| CN114870542A (en) * | 2021-11-04 | 2022-08-09 | 赣州齐畅新材料有限公司 | Smoke waste gas treatment method for water film dust removal by using lime water |
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Application publication date: 20130417 |