CN1257760C - Combined two-stage flue gas desulfurization and dust-eliminating process - Google Patents
Combined two-stage flue gas desulfurization and dust-eliminating process Download PDFInfo
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- CN1257760C CN1257760C CN 03111581 CN03111581A CN1257760C CN 1257760 C CN1257760 C CN 1257760C CN 03111581 CN03111581 CN 03111581 CN 03111581 A CN03111581 A CN 03111581A CN 1257760 C CN1257760 C CN 1257760C
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 36
- 230000023556 desulfurization Effects 0.000 title claims abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 63
- 239000003546 flue gas Substances 0.000 title claims description 63
- 238000000034 method Methods 0.000 title abstract description 33
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 64
- 239000000428 dust Substances 0.000 claims abstract description 49
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000005516 engineering process Methods 0.000 claims abstract description 20
- 239000003517 fume Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000000779 smoke Substances 0.000 claims description 48
- 238000001035 drying Methods 0.000 claims description 23
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 15
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 15
- 239000000920 calcium hydroxide Substances 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- 239000011593 sulfur Substances 0.000 claims description 15
- 239000003500 flue dust Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000007795 chemical reaction product Substances 0.000 claims description 7
- 239000012717 electrostatic precipitator Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 238000005202 decontamination Methods 0.000 claims description 3
- 230000003588 decontaminative effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000012065 filter cake Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 210000000481 breast Anatomy 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001669 calcium Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
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Abstract
The present invention relates to a combined two-stage purifying technology for desulphurizing and dedusting fume, which can effectively desulphurize and dedust the fume containing sulfur dioxide and dust in high concentration. The present invention is composed of a first part, a second part and a third part, wherein the first part is a ceramic multi-pipe deduster or an electrostatic deduster which dedusts the fume in first level, and powder dust in the fume is removed by 90% to 99%; the second part is divide into a venturi and a dryness absorbing tower, wherein the sulfur dioxide in the fume makes a reaction with desulphurization liquid, so the sulfur dioxide is absorbed to be desulphurized in first level; the third part is a bag-type desulfurizing deduster which removes a product generated by the desulphurization reaction and dedusts small granules in the fume in second level; thus, the sulfur dioxide gas in the fume, which is not removed is desulphurized in the second level. The present invention has the characteristics of simple technical process, optimum device match and assembly, low calcium sulfur ratio, high desulphurizing and dedusting efficiency, small system occupation area, little maintenance working load, low operation cost, etc. The present invention also has the advantages that a draught fan does not contain water to stick the dust, the fume exhaust temperature is high, the rime fog phenomenon caused by the vapor does not exist, and a desulfurization product is a dry powder agent which can be conveniently stored and transported and can be utilized synthetically.
Description
Technical field:
The present invention relates to a kind of coal-fired furnace kiln that is applicable to, the compound twin-stage flue gas desulfurization and dedusting process for purifying of dust-laden, the high concentrated phase flue gas of sulfur-bearing efficient desulfurizing and dust collecting.
Background technology:
Existing fume desulfurizing and dedusting technology is divided into wet method and dry method.Desulfurizing agent adopts calcium class material more.The wet process of FGD dust collecting process is after earlier flue gas being carried out udst separation, contains the flue gas of sulfur dioxide, carries out the mass transfer heat exchange with the alkaline aqueous solution that contains calcium hydroxide in the absorption tower, removes sulfur in smoke.The wet process of FGD dust collecting process comprises circulation, sewage concentration systems, Ash Water Separator system, contains wet product treatment system, desulfurizing agent preparation system.Process system complexity, floor space is big, smog discharge temperature is low, chimney breast has water vapour " white mist " phenomenon.Nozzle easily stops up inefficacy, the easy fouling corrosion of water piping system.Particularly humidity of flue gas is bigger, makes air-introduced machine easily be with the sticking ash of water, and dynamic balancing is bad, and influence is produced, and maintenance workload strengthens, and operating cost increases.
Existing dry flue gas desulphurization technology is to spray in the flue gas of desulfurizing agent dry mash in the air supporting absorption tower of flowing through.Desulfurizing agent and flue gas mixing mass transfer remove sulfur in smoke.Product removes through follow-up dust arrester.The part product is sent in the air supporting absorption tower repeatedly and flue gas mixing mass transfer by secondary, is beneficial to improve the utilization rate of desulfurizing agent.Because of the dry flue gas desulphurization dust collecting process belongs to solid-state powder and the gaseous state flue gas carries out mass transfer, thereby the mass transfer absorption efficiency is lower.Solid-state powder desulfurizing agent is when reacting with sulfur in smoke simultaneously, the powder surface is at first adsorbed saturated, increased the resistance of powder kernel and sulfur dioxide reaction, make solid-state powder desulfurizing agent can't be fully and sulfur in smoke fully react.Even the technical measures that adopted desulfurizing agent to use repeatedly also only can partly improve the utilization rate of desulfurizing agent, and can't improve desulfuration efficiency.So existing dry flue gas desulphurization dust collecting process desulfuration efficiency is lower, calcium sulfur ratio is bigger, the desulfurizing agent consumption is increased, operating cost increases.The nozzle pipe system wear is bigger simultaneously, and maintenance workload increases.
Summary of the invention:
The advantage that the purpose of this invention is to provide a kind of collection existing " wet method " and " dry method " fume desulfurizing and dedusting technology is the high compound twin-stage flue gas desulfurization and dedusting process for purifying of desulfurization dust-removing efficiency of one, the combination of equipment optimum Match.
The object of the present invention is achieved like this:
Compound twin-stage fume desulfurizing and dedusting technology is made up of one, two two parts or preposition part and, two parts:
Preposition part is ceramic multicyclone dust collector or electrostatic precipitator, and flue gas is carried out primary dust removing, and by primary purifying, flue gas enters the first of this technology to 90%～99% dust in flue gas with less dust content in the primary dust removing device.
Second portion is the venturi drying and absorbing tower, is the core of this technology.Main by the upper inlet smoke box, organize Venturi tube, middle part smoke box, bottom collection smoke box more, organize the double-stage desulfurizing nozzle for liquid more, the flue-dust retainer that has a protecting against shock awl forms.Every group of Venturi tube comprises collapsible tube, aditus laryngis, anemostat, and the upper inlet smoke box links to each other with many groups Venturi tube, and the outlet of venturi anemostat links to each other with the lower part outlet smoke box.Arrange many group twin-stage atomizers in venturi collapsible tube lower tangential.Doctor solution tangentially sprays into Venturi tube from nozzle, and the desulfurization liquid measure determines that in removing required calcium hydroxide ratio of sulfur dioxide in flue gas and concentration collection smoke box bottom, bottom connects flue-dust retainer.
Enter many group Venturi tubes through the flue gas of primary dust removing respectively through the upper inlet smoke box, flue gas flow rate increases gradually, and mixes with doctor solution that many groups nozzle of collapsible tube lower disposed tangentially sprays into, enters Venturi throat jointly.The flue gas of high speed fully mixes with doctor solution in Venturi throat, strong mass transfer heat exchange, and sulfur in smoke and reactive desulfurizing agent are absorbed, and realize first grade desulfurizing.Desulfurization resultant is by the smoke evaporative drying, flue gas heat release and lowering the temperature.For the back level system provides suitable working temperature.Because Venturi tube has extremely strong mass transfer effect, thereby has higher desulfuration efficiency.Flue gas through primary dust removing and first grade desulfurizing enters bottom collection smoke box, enters the middle part smoke box after 180 ° of the counter-rotatings in the collection smoke box, and the middle part smoke box links to each other with exhanst gas outlet.Flue gas reverses in the collection smoke box of bottom 180 ° when rising, and desulphurization reaction product larger particles is thrown in the flue-dust retainer of bottom by centrifugal.
Second portion is the pocket type desulfurizing dust-collector.Venturi drying and absorbing tower exhanst gas outlet links to each other with the pocket type desulfurizing dust-collector gas approach of being made up of filter bag.Enter the pocket type desulfurizing dust-collector after flue gas process primary dust removing and the first grade desulfurizing.The dust that primary dust removing is not captured down and in drying and absorbing tower the first grade desulfurizing product enter the filter bag of pocket type desulfurizing dust-collector with flue gas, on filter bag, form cake layer, remove the desulphurization reaction product and the tiny grade in the flue gas is carried out final dusting, finish secondary purification.Contain the not calcium hydroxide of complete reaction in the cake layer, sulfur dioxide gas that flue gas is not removed in drying and absorbing tower during through cake layer with calcium hydroxide further reaction be removed the desulfurization of realization secondary.Cake layer on the filter bag is progressive additive with gas cleaning, and newly-increased part is all the time on the surface of cake layer, when reaching capacity state along with cake layer absorption sulfur in smoke, new desulfurizing agent filter is arranged again on cake layer, sulfur in smoke at first contacts with the cake layer of new formation all the time and reacts, thereby more stable desulfuration efficiency is arranged.Because through primary dust removing, the load that enters the pocket type desulfurizing dust-collector is less, it is longer to make on the filter bag filter cake reach the certain thickness time, this just makes calcium hydroxide and sulfur in smoke in the filter cake that the enough haptoreaction time is arranged, flue gas passes cake layer equably simultaneously, make in drying and absorbing tower, do not have complete reaction calcium hydroxide all can with the abundant complete reaction of sulfur dioxide, thereby improved the utilization rate of desulfurizing agent.
Filter cake reaches certain thickness on filter bag, desulfurizing agent absorbs sulfur in smoke and reaches capacity, the pocket type desulfurizing dust-collector reaches whole resistance, beginning " online " or " off-line " deashing, filter cake on the filter bag is eliminated, new filter cake begins to form, and carries out next flue gas desulfurization and dedusting decontamination cycle.Discharge through the dry type ash-transmission system at the dryness dust that preposition part and, two partial desulfurization cleaners are captured down.
Benefit of the present invention is:
The advantage that collects existing " wet method " and " dry method " fume desulfurizing and dedusting technology is an one.Whole shortcomings of existing " wet method " and " dry method " fume desulfurizing and dedusting technology have been overcome simultaneously.Have characteristics such as technological process is simple, the combination of equipment optimum Match, calcium sulfur ratio is low, desulfurization dust-removing efficiency is high, system's floor space is little, maintenance workload is few, operating cost is low.Air-introduced machine is not with the sticking ash of water, and the exhaust gas temperature height does not have steam " white mist " phenomenon.Desulfurization resultant is a dry powder doses, is convenient to storing and comprehensive utilization.
(1) this technology is by active venturi drying and absorbing tower, and the ceramic multicyclone dust collector (or electrostatic precipitator) and the efficient filter-bag deduster of maturation organically combined, and realizes " twin-stage " desulfurization dust-removing technique.Three kinds of units are created optimal operating condition condition and technical parameter mutually.Make that initial cost is economized, operating cost is low, but separately application can not reach the ceramic multicyclone dust collector of discharge standard can extensive use.Make the efficiency of dust collection height, but use separately, and make it possess desulfurizing function because of the short bag-type dusting of worst hot case operation filtrate life cycle can move under lower working temperature.
(2) this technology captures the dust and the desulfurization resultant that get off and is dry powder, is convenient to storing and comprehensive utilization.Flue gas after being purified still keeps more than 100 ℃, and air-introduced machine is not with the sticking ash of water, and facilities such as nozzle, pipeline do not have fouling to stop up corrosion phenomenon.The chimney breast discharging does not have steam " white mist " group cap.
(3) carried out two-stage dust removal, secondary desulfurization, had higher efficiency of dust collection and desulfuration efficiency, be applicable to dust content, contain the flue gas purification system of the higher all kinds of coal-fired furnace kilns of sulfur dioxide concentration.Carry out " twin-stage " desulfurization, dedusting, high concentrate dust and the sulfur dioxide in the flue gas not only can effectively be removed by system, and because of " twin-stage " disperseed desulfurization, the dedusting operating load of single devices, has prolonged the life cycle of single devices.
(4) preparation method of wet desulfurizing process is adopted in the desulfurizing agent preparation, has improved the utilization rate of desulfurizing agent to greatest extent.Desulfurization and dedusting all is to carry out under " drying " state.This desulfurization dust-removing technique has whole advantages of " wet method " and " dry method " sulfur removal technology.
(5) desulfurizing agent is a calcium hydroxide aqueous solution, adopted combination venturi drying and absorbing tower, as the mass transfer heat exchange element, make flue gas and doctor solution that strong mass transport process be arranged, desulfurizing agent absorbs sulfur in smoke efficiently in tower, doctor solution absorbs heat in the flue gas and evaporation drying in tower, also makes flue gas cool-down simultaneously, put out the ash cooling even there is unburnt carbon granule also can in the absorption tower, be desulfurized liquid " bathing " in the flue gas, more adapt to the operating condition of follow-up pocket type desulfurizing dust-collector.For efficient sack cleaner provides technical guarantee in the extensive use of coal-fired furnace kiln flue gas purification system.Desulfurizing agent is made slurries increases the conveying of active more convenient system, little to the wearing and tearing of nozzle, pipeline, equipment.
(6) if primary dust removing adopts ceramic multicyclone dust collector, can remove big grade grit in the flue dust effectively, tiny grade is removed by follow-up pocket type desulfurizing dust-collector, and system configuration is more reasonable.Ceramic multicyclone dust collector does not have operating cost simultaneously, and is non-maintaining more than 10 years, and the system maintenance work amount is reduced.
(7) saved circulation in the wet desulfurizing process, the sewage concentration systems, the Ash Water Separator system contains wet product treatment system.Make desulfurization, dust collecting process process simplification, reduce floor space and operating cost.Avoided gas in the dry desulfurizing process, solid mass transfer effect poor simultaneously, sorbent utilization is low, calcium sulfur ratio is big, desulphurization cost is high, desulfuration efficiency is low, nozzle pipe problem easy to wear.
(8) system combination is good, and technological process is simple, is convenient to arrange.
Description of drawings
Fig. 1 is system in combination figure of the present invention,
Fig. 2 is a venturi drying and absorbing tower structural representation of the present invention.
The specific embodiment:
A kind of compound twin-stage fume desulfurizing and dedusting technology, by ceramic multicyclone dust collector 1 (or electrostatic precipitator), active venturi drying tower 2, pocket type removes dirt apparatus 3 three parts and forms:
Preposition part is a ceramic multicyclone dust collector 1, and flue gas is carried out primary dust removing, and 90% flue dust is entered down road technology by primary purifying with less dust content.
Preposition part also can be electrostatic precipitator, has identical effect.
First is active venturi drying and absorbing tower 2.Drying and absorbing tower comprises upper inlet smoke box 4, organizes Venturi tube 5 more, organizes doctor solution entry nozzle 8 more, middle part smoke box 9, lower part outlet smoke box 6, have the flue-dust retainer 7 of protecting against shock awl.Every group of Venturi tube comprises collapsible tube, aditus laryngis, anemostat, upper inlet smoke box 4 is connected with many group Venturi tube 5 inlets, doctor solution entry nozzle 8 tangentially is distributed on the collapsible tube bottom of Venturi tube 5, the anemostat outlet of Venturi tube 5 is connected with lower part outlet smoke box 6, lower part outlet smoke box 6 bottoms connect flue-dust retainer 7, and middle part smoke box 9 links to each other with exhanst gas outlet 10.Primary dust removing device exhanst gas outlet is connected with active venturi drying and absorbing tower gas approach 11.The flue gas of process primary dust removing advances smoke box by top and enters many group Venturi tubes respectively, the aqueous solution that contains calcium hydroxide sprays into the venturi inlet through the tangential rotation of nozzle, mix with flue gas, the high speed flue gas is in venturi aditus laryngis place and the strong mass transfer heat exchange of doctor solution, the desulfurization liquid measure is determined in removing required calcium hydroxide ratio of sulfur dioxide in flue gas and concentration, as calcium sulfur ratio is 2, concentration is 10%, define essential difference with the venturi scrubber of routine by liquid-gas ratio, sulfur in smoke gas is fully absorbed with the doctor solution generation chemical reaction that contains calcium hydroxide, realizes first grade desulfurizing.Doctor solution absorbs heat in the flue gas and evaporation drying, flue gas heat release and reduce temperature.For follow-up pocket type desulfurizing dust-collector provides suitable operating condition temperature.Flue gas after the desulfurization reverses in bottom smoke box 6 and enters middle part smoke box 9 after 180 °, enters follow-up pocket type desulfurizing dust-collector through outlet.When flue gas rose 180 ° of bottom smoke box counter-rotatings, bulky grain desulphurization reaction product is got rid of fell into the bottom flue-dust retainer.
Second portion is a pocket type desulfurizing dust-collector 3.Active venturi drying and absorbing tower exhanst gas outlet is connected with the pocket type desulfurizing dust-collector gas approach of being made up of filter bag.The dust that primary dust removing is not captured down and enter the filter bag of pocket type desulfurizing dust-collector at the first grade desulfurizing reaction product with flue gas.Form cake layer on the filter bag surface, remove the desulphurization reaction product and the fine dusts in the flue gas is carried out the two-stage dust removal purification.Contain in drying tower the not calcium hydroxide desulfurizing agent of complete reaction in the cake layer, the sulfur dioxide gas that in drying and absorbing tower, is not removed with flue gas during evenly by cake layer and the calcium hydroxide desulfurizing agent further react and realize the secondary desulfurization.
When cake layer reaches certain thickness on the filter bag, absorb sulfur dioxide and reach capacity, when filter bag reached whole resistance, beginning " online " or " off-line " deashing, new cake layer began to form, and carry out next decontamination cycle.Preposition part and one, two partial desulfurization cleaners capture the dryness dust that gets off and discharge through the dry type ash-transmission system.
Claims (3)
1. compound twin-stage fume desulfurizing and dedusting technology, it is characterized in that: this technology comprises two parts:
First is the venturi drying and absorbing tower, and the venturi drying and absorbing tower comprises the upper inlet smoke box, organizes Venturi tube more, middle part smoke box, bottom collection smoke box, doctor solution nozzle, flue-dust retainer; Every group of Venturi tube comprises collapsible tube, aditus laryngis, anemostat, the upper inlet smoke box links to each other with many groups Venturi tube, the outlet of venturi anemostat links to each other with the lower part outlet smoke box, arrange the doctor solution nozzle in venturi collapsible tube lower tangential, collection smoke box bottom, bottom connects flue-dust retainer, the middle part smoke box links to each other with exhanst gas outlet, doctor solution tangentially sprays into Venturi tube from the doctor solution nozzle, the desulfurization liquid measure is determined in removing required calcium hydroxide ratio of sulfur dioxide in flue gas and concentration, flue gas enters many group Venturi tubes respectively through the upper inlet smoke box, mix with doctor solution, enter Venturi throat jointly, the flue gas of high speed fully mixes the mass transfer heat exchange with doctor solution in Venturi throat, sulfur in smoke and doctor solution reaction are absorbed, and realize first grade desulfurizing; Flue gas counter-rotating in the collection smoke box enters the middle part smoke box after 180 °, and the middle part smoke box links to each other with exhanst gas outlet, and flue gas is when 180 ° of risings of counter-rotating, and desulphurization reaction product larger particles is thrown in the flue-dust retainer of bottom by centrifugal,
Second portion is the pocket type desulfurizing dust-collector, venturi drying and absorbing tower exhanst gas outlet links to each other with the pocket type desulfurizing dust-collector gas approach of being made up of filter bag, the filter bag of pocket type desulfurizing dust-collector is removed the desulphurization reaction product and the tiny grade in the flue gas is carried out dedusting, on filter bag, form cake layer, contain the not calcium hydroxide of complete reaction in the cake layer, the sulfur dioxide gas that is not removed in the flue gas further reacts with calcium hydroxide during through cake layer and is removed, realize the secondary desulfurization, cake layer on filter bag reaches certain thickness, desulfurizing agent absorbs sulfur in smoke and reaches capacity, the pocket type desulfurizing dust-collector reaches whole resistance, begin online or off-line ash-clearing, carry out next flue gas desulfurization and dedusting decontamination cycle
Discharge through the dry type ash-transmission system at the dryness dust that first, second portion desulfurating dust-removing equipment are captured down.
2. compound twin-stage fume desulfurizing and dedusting technology according to claim 1 is characterized in that: also comprise a ceramic multicyclone dust collector or electrostatic precipitator flue gas desulfurization and dedusting part before first, that is:
Preposition part is ceramic multicyclone dust collector or electrostatic precipitator, and flue gas is carried out primary dust removing, removes in the flue gas 90%～99% dust,
First is described venturi drying and absorbing tower flue gas desulfurization and dedusting part;
Second portion is described pocket type desulfurizing dust-collector flue gas desulfurization and dedusting part;
3. compound twin-stage fume desulfurizing and dedusting technology according to claim 2 is characterized in that: discharge through the dry type ash-transmission system at the dryness dust that preposition part and first, second portion desulfurating dust-removing equipment are captured down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03111581 CN1257760C (en) | 2003-04-28 | 2003-04-28 | Combined two-stage flue gas desulfurization and dust-eliminating process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03111581 CN1257760C (en) | 2003-04-28 | 2003-04-28 | Combined two-stage flue gas desulfurization and dust-eliminating process |
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| CN1257760C true CN1257760C (en) | 2006-05-31 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773773B (en) * | 2009-01-08 | 2013-07-10 | 黑龙江双锅锅炉股份有限公司 | Method for desulfurizing coal gas and smoke gas generated in horizontal circle fluidized-bed gasification furnace |
| CN103752153B (en) * | 2014-01-23 | 2016-05-11 | 冀文平 | Refining Equipmeut for Desulfuration in Gas |
| CN108187481B (en) * | 2018-03-09 | 2023-12-19 | 福建龙净环保股份有限公司 | Dry flue gas desulfurization device |
| CN110052154A (en) * | 2019-04-17 | 2019-07-26 | 西昌市蓝鼎环保科技有限公司 | A kind of dry desulfurization dust collecting process |
| CN110102125A (en) * | 2019-04-22 | 2019-08-09 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of incinerator and its flying dust separator |
| CN110387270B (en) * | 2019-08-09 | 2024-03-01 | 中冶赛迪技术研究中心有限公司 | Dry desulfurization system and method for blast furnace gas |
| CN110665327B (en) * | 2019-11-11 | 2021-08-10 | 山东平福环境服务有限公司 | Efficient bag-type dust removal system and dust removal method thereof |
| CN111054200A (en) * | 2020-01-08 | 2020-04-24 | 聚方(大连)环保技术有限公司 | Flue gas dry desulfurization device |
| CN116046435B (en) * | 2023-03-01 | 2023-06-02 | 武汉鸿康科技有限公司 | Industrial dust removal unit on-line monitoring system based on Internet of things |
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