CN105498513A - Wet flue gas high-efficiency desulfuration and high-efficiency dedusting integrated device through double circulation washing - Google Patents
Wet flue gas high-efficiency desulfuration and high-efficiency dedusting integrated device through double circulation washing Download PDFInfo
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- CN105498513A CN105498513A CN201610031806.6A CN201610031806A CN105498513A CN 105498513 A CN105498513 A CN 105498513A CN 201610031806 A CN201610031806 A CN 201610031806A CN 105498513 A CN105498513 A CN 105498513A
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
A wet flue gas high-efficiency desulfuration and high-efficiency dedusting integrated device through double circulation washing is a spraying absorption tower, wherein the bottom of the tower is provided with a smoke inlet, the top of the tower is provided with a smoke outlet, a tower body comprises an absorption tower pulp pool, a first grade circulating spray washing area, a second grade circulating collection tray area, a second grade circulating spray washing area and a defogging area in sequence from bottom to top; a smoke commutating area is provided with a high-efficiency smoke commutator; the first grade circulating spray washing area comprises a first grade circulating smoke commutating area, a first grade absorption area and a first grade pulp spraying layer in sequence from bottom to top; the second grade circulating collection tray area comprises a second grade pulp collection tray, a second grade circulating smoke commutating area, a second grade absorption area and a second pulp spraying layer in sequence from bottom to top; a pulp circulating pipe is arranged between the absorption tower pulp pool and the first grade pulp spraying layer; and a second grade circulating pulp box is used for providing second grade circulating spraying pulp. According to the device, the double circulation washing is combined with the treatment technology of the high-efficiency smoke commutator and the calcium-based wet flue gas desulfurization and dedusting technology through defogging of a high-efficiency defogger, so as to achieve high-efficiency desulfurization and dedusting integration.
Description
Technical field
The present invention relates to calcium base wet-process desulfurization and dedusting technology field, particularly relate to a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization and high-effective dust-removing integrated apparatus.
Background technology
At present, the flue gas desulfurization of large-scale coal fired power plant mainly adopts Wet Flue Gas Desulfurization Technique, along with China is more and more stricter to the environmental requirement in thermal power plant, fossil-fuel power plant atmospheric pollutant emission standard improves further, and the desulfurization emission reduction tasks that thermal power generation unit faces is severe all the more.According to national environmental protection portion " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-2011); the existing desulfurization of most of thermal power plant, dust arrester all can not meet new emission request, need to carry out technological innovation and technical substitution to existing desulfurization, dedusting technology.
Traditional washing type calcium base wet-process desulfur technology mainly adopts the washing slurries containing absorbent to carry out circulation cleaning, containing SO to flue gas
2former flue gas directly to enter in absorption tower after once washing, flue gas after washing is just through two-stage demister, clean flue, smoke stack emission, and reacted gypsum slurries directly enters the equipment such as cyclone, vacuum belt dewaterer and removes moisture, separates out gypsum crystal.SO in the method in flue gas
2through a spray washing, in the rational situation of Technological Economy, desulfuration efficiency is subject to the restriction of multiple parameter, is difficult to steady in a long-term operation desulfuration efficiency more than 97.5% time; In addition, after a spray washing and demister, drop can only control at 75mg/Nm
3, absorption tower dust removing effects is restricted, and generally only has about 50%.To sum up, prior art smooth homogeneous is poor, there are flue gas bias current, turbulent flow, escape etc., and therefore desulfurized effect, dust removing effects are difficult to ensure, are badly in need of a kind of device integrating high-efficiency desulfurization and high-effective dust-removing at present.
Summary of the invention
The object of the invention is to provide a kind of Two-way Cycle to wash wet flue gas high-efficiency desulfurization and high-effective dust-removing integrated apparatus, Two-way Cycle washing combined highly effective flue gas rectifier process and high efficiency demister is adopted to carry out the calcium base wet-process flue gas desulfurization dedusting technology of demist, reach efficient desulfurizing and dust collecting integration, solve existing washing methods smooth homogeneous poor, there is the problems such as flue gas bias current, turbulent flow, escape, desulfurization and dust removing effects are difficult to the technical problem simultaneously ensured; After also solving two-stage ridge demister, drop can only control at 75mg/Nm
3left and right, can not ensure containing being difficult to dust removing effects when gypsum slurries and flue dust, exporting dust concentration and cannot reach minimum discharge (5mg/Nm inside flue gas
3) technical barrier.
For realizing above-mentioned technical purpose, the present invention takes following technical scheme:
A kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization and high-effective dust-removing integrated apparatus, be a spray absorber, be provided with smoke inlet at the bottom of tower, top is provided with exhanst gas outlet, it is characterized in that: the tower body bottommost of described spray absorber is absorption tower stock tank; The top of described absorption tower stock tank sets gradually primary cycle spray washing district, secondary cycle spray washing district from bottom to top and removes fog-zone; Described primary cycle spray washing district is followed successively by primary cycle flue gas commutating zone, first order absorption district, one-level slurries spraying layer from bottom to top; Described secondary cycle spray washing district is followed successively by secondary slurry collecting disc, secondary cycle flue gas commutating zone, secondary uptake zone and secondary slurries spraying layer from bottom to top; High effective flue gas rectifier is all provided with in described primary cycle flue gas commutating zone and secondary cycle flue gas commutating zone; Described except establishing high efficiency demister in fog-zone; Be provided with serum recycle pipe between described absorption tower stock tank and one-level slurries spraying layer, spray-absorption tower bottom is provided with absorption tower air inlet pipe and gypsum discharge pipe; The side of described spray absorber is provided with secondary cycle slurry tank, and the outside of described secondary cycle slurry tank has pipeline to connect secondary slurries spraying layer and secondary slurry collecting disc respectively.I and II circulation form dispersed placement form taked by high effective flue gas rectifier, takes different design forms and material, and primary cycle is arranged on about 1m under spraying layer, and secondary cycle is arranged on about 1m under spraying layer.
Preferably, described high effective flue gas rectifier is shutter annulus eddy flow rectifier, shutter annulus eddy flow rectifier is that circular commutator segment forms by multilayer, the cross section of each commutator segment and horizontal direction are 40 ° and tilt, and it is taked particular design scheme to play a part, selects hydrophily material can play rectification flue gas, uniform smoothness, segmentation bubble, form moisture film, the prolong smoke time of staying.Thus can play strengthen desulfurized effect, strengthen fine particle flutter the ability of catching.
Preferably, described serum recycle pipe is provided with primary cycle slush pump, the pipeline that secondary cycle slurry tank connects secondary slurries spraying layer is provided with secondary cycle slush pump, and described gypsum discharge pipe is provided with gypsum excavationg pump, and absorption tower air inlet pipe is provided with absorption tower oxidation fan.
Preferably, described high efficiency demister is ridge demister, and ridge blade pitgh controls at below 25mm, and ridge demister droplet content is no more than 20mg/Nm
3.
Preferably, the slurry volume that the degree of depth of described absorption tower stock tank meets absorption tower stock tank makes the serum recycle time of staying be not less than 5 minutes.
Preferably, the distance of described one-level slurries spraying layer distance at the bottom of tower is for stock tank height with meet flue gas and be not less than height sum required by 3.5s in the first order absorption district time of staying.
Preferably, described secondary slurry collecting disc is not less than 3m from the distance of one-level slurries spraying layer, secondary slurries spraying layer is from tower top except the distance of fog-zone is not less than 2m, and the distance of secondary slurry collecting disc and secondary slurries spraying layer is not less than height required by 3s for meeting flue gas in the secondary uptake zone time of staying.
Preferably, the distance of described high efficiency demister and tower top is not less than 1m.
Preferably, the pH scope of the washing slurries of described one-level slurries spraying layer is 4.8 ~ 5.2.
Preferred, the pH scope of the washing slurries of described secondary slurries spraying layer is 5.8 ~ 6.2.
The present invention adopts the rectification of two-stage subregion flue gas to add the mode of two-stage divided serum washing, and flue gas rectification and circulated sprinkling washing process that flue gas is connected through two in an absorption tower, make the SO in flue gas
2with fine dust by washing absorption.Concrete integrated wet method sulphur removing and dust removing technology process is as follows: undressed flue gas enters absorption tower from smoke inlet, first through primary cycle flue gas commutating zone, distribute by making flue gas smooth homogeneous after high effective flue gas rectifier, significantly improve primary cycle desulfuration efficiency and efficiency of dust collection, then from bottom to top by primary cycle spray washing district, absorption tower, with from top to bottom from the atomization slurry counter current contacting of the low ph value of one-level slurries spraying layer, part SO in flue gas
2be removed in primary cycle spray washing district with dust.Flue gas through one-level spray washing upwards passes through secondary cycle spray washing district, secondary cycle is entered from bottom to top from the flue gas circular passage of secondary slurry collecting disc, through secondary cycle flue gas commutating zone, and again by making flue gas smooth homogeneous distribute after high effective flue gas rectifier, secondary cycle solid content is very low, significantly can improve the efficiency of dust collection of secondary cycle; From top to bottom from the atomization slurry counter current contacting of the high ph-values of secondary slurries spraying layer, remaining SO in flue gas
2be removed in secondary uptake zone with dust, the flue gas after washing discharges absorption tower by exhanst gas outlet after the high efficiency demister removing drop of tower top.
The desulfurization degree of described two-stage washing absorption tower apparatus is calculated as follows:
η
s＝η
s1+(1-η
s1)*η
s2
η
s---device desulfurization degree, %;
η
s1---device primary cycle washing desulphurization rate, %;
η
s2---device secondary cycle washing desulphurization rate, %;
The de-dirt rate of described two-stage washing absorption tower apparatus is calculated as follows:
η
d＝η
d1+(1-η
d1)*η
d2
η
d---device efficiency of dust collection, %;
η
d1---device primary cycle cleaning dust rate, %;
η
d2---device secondary cycle cleaning dust rate, %;
Inventive desulfurization technique adopts the washing slurries of different pH to carry out classification washing to flue gas by adopting slurries subregion, makes SO in flue gas after first carrying out once washing by the slurries of low ph value to flue gas
2, smoke content reduces, and then by the slurries of high ph-values, secondary washing is carried out to the flue gas after once washing, realizes the object of high-efficiency desulfurization; Finally by high efficiency demister, carry out efficient demist dedusting, control droplet content.Compared with prior art, its technical advantage is:
1, adopt two stage cycle slurry wash technology, the sprayed slurry needed for primary cycle spray washing district is provided by absorption tower stock tank, and gets back to absorption tower stock tank and recycle, and this cycles through primary cycle slush pump and realizes; Sprayed slurry needed for secondary cycle spray washing district is provided by the secondary cycle slurry tank that absorption tower is external, the secondary slurry collecting disc collection of slurries after washing in absorption tower is got back to secondary cycle slurry tank and is recycled, this cycles through secondary cycle slush pump and realizes, secondary cycle catch tray is set below secondary cycle, it has deflection cone, and this device plays the effect of segmentation, current-sharing while collecting secondary cycle slurries; By the use of two stage cycle slurry wash technology, even if the SO of inlet flue gas
2concentration is up to 15000mg/Nm
3time, the SO in the exiting flue gas of absorption tower
2concentration still can be reduced to 35mg/Nm
3below, desulfuration efficiency up to 99.8%, can meet the requirement of minimum discharge standard.
2, secondary smoke commutation technique is adopted, primary cycle flue gas commutating zone is set between smoke inlet and primary cycle spray washing district, secondary cycle flue gas commutating zone is set between secondary uptake zone and secondary slurries spraying layer, take secondary cycle form dispersed placement form, by high effective flue gas rectifier, flue gas smooth homogeneous is distributed, significantly improve circulation desulfurization efficiency and efficiency of dust collection, even if realize entrance dust concentration up to 25mg/Nm
3time, absorption tower outlet dust concentration still can be reduced to 5mg/Nm
3below, de-dirt efficiency, up to more than 80%, meets minimum discharge standard-required;
3, high efficiency demister is set at tower top, effectively can controls outlet droplet content at 20mg/Nm
3below, simultaneously because secondary cycle slurry solid content is lower, demister, minimizing is taken guttiferous while, significantly reduces outlet dust concentration, makes outlet dust concentration reach minimum discharge;
4, slurries subregion is realized, desulfurated plaster is discharged from the absorption tower stock tank of low ph value, and being conducive to desulfurizing byproduct complete oxidation is gypsum, and the surface moisture content of the desulfurated plaster of discharging from absorption tower is less than 8%, gypsum particle diameter central diameter value, between 20 ~ 30 microns, obtains the gypsum of high-quality;
To sum up, the present invention adopts Two-way Cycle washing combined highly effective flue gas rectifier process and high efficiency demister to carry out the calcium base wet-process flue gas desulfurization dedusting technology of demist, reaches efficient desulfurizing and dust collecting integration, realizes SO
2, flue dust minimum discharge, wherein SO
2minimum can control 10mg/Nm
3below, flue dust can control to 5mg/Nm
3below.
Accompanying drawing explanation
Fig. 1 is the structural representation of Two-way Cycle washing wet flue gas high-efficiency desulfurization and the high-effective dust-removing integrated apparatus that the present invention relates to.
Reference numeral: 1-smoke inlet, 2-exhanst gas outlet, 3-absorption tower stock tank, 4-gypsum excavationg pump, 5-primary cycle spray washing district, 51-primary cycle flue gas commutating zone, 52-first order absorption district, 53-one-level slurries spraying layer, 6-secondary cycle spray washing district, 61-secondary slurry collecting disc, 62-secondary cycle flue gas commutating zone, 63-secondary uptake zone, 64-secondary slurries spraying layer, 7-is except fog-zone, 71-high efficiency demister, 8-secondary cycle slurry tank, 9-primary cycle slush pump, 10-secondary cycle slush pump, 11-absorption tower oxidation fan.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, the present invention relates to a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization and high-effective dust-removing integrated apparatus, be a spray absorber, at the bottom of tower, be provided with smoke inlet 1, top is provided with exhanst gas outlet 2, it is characterized in that: the tower body bottommost of described spray absorber is absorption tower stock tank 3; The top of described absorption tower stock tank 3 sets gradually primary cycle spray washing district 5, secondary cycle spray washing district 6 from bottom to top and removes fog-zone 7; Described primary cycle spray washing district 5 is followed successively by primary cycle flue gas commutating zone 51, first order absorption district 52, one-level slurries spraying layer 53 from bottom to top; Described secondary cycle spray washing district 6 is followed successively by secondary slurry collecting disc 61, secondary cycle flue gas commutating zone 62, secondary uptake zone 63 and secondary slurries spraying layer 64 from bottom to top; High effective flue gas rectifier is all provided with in described primary cycle flue gas commutating zone 53 and secondary cycle flue gas commutating zone 64; Described except establishing high efficiency demister 71 in fog-zone 7; Be provided with serum recycle pipe between described absorption tower stock tank 3 and one-level slurries spraying layer 53, spray-absorption tower bottom is provided with absorption tower air inlet pipe and gypsum discharge pipe; The side of described spray absorber is provided with secondary cycle slurry tank 8, and the outside of described secondary cycle slurry tank 8 has pipeline to connect secondary slurries spraying layer 64 and secondary slurry collecting disc 61 respectively.
Wherein, described high effective flue gas rectifier is eddy flow annulus rectifier, spiral-flow type annulus rectifier is that circular commutator segment forms by multilayer, the cross section of each commutator segment and horizontal direction are 40 ° and tilt, and it is taked particular design scheme to play a part, selects hydrophily material can play rectification flue gas, uniform smoothness, segmentation bubble, form moisture film, the prolong smoke time of staying.Thus can play strengthen desulfurized effect, strengthen fine particle flutter the ability of catching.Described serum recycle pipe is provided with primary cycle slush pump 9, the pipeline that secondary cycle slurry tank 8 connects secondary slurries spraying layer 63 is provided with secondary cycle slush pump 10, gypsum discharge pipe is provided with gypsum excavationg pump 4, and absorption tower air inlet pipe is provided with absorption tower oxidation fan 12; High efficiency demister 71 is ridge demister, and after adopting Two-way Cycle and high efficiency rectifier, secondary solid content greatly reduces, flue gas smoothness is more even,
In tower in space matching, the degree of depth of absorption tower stock tank 3 discharges the height required by 5 hours time of staying for the height or gypsum meeting 5 minutes serum recycle time of staying; One-level slurries spraying layer 53 apart from the distance at the bottom of tower for stock tank height with meet flue gas and be not less than required by 3.5s described in height sum secondary slurry collecting disc 61 from the distance of one-level slurries spraying layer 53 in first order absorption district 52 time of staying and be not less than 3m, secondary slurries spraying layer 64 is not less than 2m from the distance of tower top demister 71, and in secondary slurries spraying layer 64, the distance of secondary slurry collecting disc 61 and secondary slurries spraying layer 64 is for meeting the height of flue gas required by secondary uptake zone 63 time of staying 3s; Described high efficiency demister 71 is not less than 0.5m with the distance of tower top.
The mode that the present invention washs through slurries two-stage subregion after adopting flue gas rectification, makes flue gas circulated sprinkling washing process through two series connection in an absorption tower, makes the SO in flue gas
2with fine dust by washing absorption.Concrete integrated wet method sulphur removing and dust removing technology process is as follows: undressed flue gas enters absorption tower from smoke inlet 1, first through primary cycle flue gas commutating zone 51, distribute by making flue gas smooth homogeneous after high effective flue gas rectifier, significantly improve primary cycle desulfuration efficiency and efficiency of dust collection, then from bottom to top by primary cycle spray washing district, absorption tower 5, with from top to bottom from the atomization slurry counter current contacting of the low ph value of one-level slurries spraying layer 53, part SO in flue gas
2be removed in primary cycle spray washing district 5 with dust.Flue gas through one-level spray washing upwards passes through secondary cycle spray washing district 6, secondary uptake zone 63 is entered by primary cycle flue gas commutating zone 62 from bottom to top from the flue gas circular passage of secondary slurry collecting disc 61, with from top to bottom from the atomization slurry counter current contacting of the high ph-values of secondary slurries spraying layer 64, remaining SO in flue gas
2be removed at primary cycle flue gas commutating zone 62 with dust, the flue gas after washing discharges absorption tower by exhanst gas outlet 2 after the high efficiency demister 71 except fog-zone 7 of tower top removes drop.
In above-mentioned technical process, the sprayed slurry needed for primary cycle spray washing district 5 is provided by absorption tower stock tank 3, and gets back to absorption tower stock tank 3 and recycle, and this cycles through primary cycle slush pump 9 and realizes; Sprayed slurry needed for secondary cycle spray washing district 6 is provided by the secondary cycle slurry tank 8 that absorption tower is external, the secondary slurry collecting disc collection of slurries after washing in absorption tower is got back to secondary cycle slurry tank 8 and is recycled, this cycles through secondary cycle slush pump 10 and realizes, secondary cycle catch tray 61 is set below secondary cycle, it has deflection cone, and this device plays the effect of segmentation, current-sharing while collecting secondary cycle slurries.The use of two stage cycle slurry wash technology, even if the SO of inlet flue gas
2concentration is up to 15000mg/Nm
3time, the SO in the exiting flue gas of absorption tower
2concentration still can be reduced to 35mg/Nm
3below, desulfuration efficiency up to 99.8%, can meet the requirement of minimum discharge standard.Primary cycle flue gas commutating zone 51 is set between smoke inlet 1 and primary cycle spray washing district 5, secondary cycle flue gas commutating zone is set between secondary uptake zone and secondary slurries spraying layer, take secondary cycle form dispersed placement form, by high effective flue gas rectifier, flue gas smooth homogeneous is distributed, by high effective flue gas rectifier, one-level flue gas smooth homogeneous is distributed, significantly improve primary cycle desulfuration efficiency and efficiency of dust collection, even if realize entrance dust concentration up to 25mg/Nm
3time, absorption tower outlet dust concentration still can be reduced to 5mg/Nm
3below, de-dirt efficiency, up to more than 80%, meets minimum discharge standard-required; Arrange above secondary cycle spray washing district 6 except fog-zone 7, high efficiency demister 7 is utilized can effectively to control to export droplet content, simultaneously because secondary cycle slurry solid content is lower, demister is minimizing is taken guttiferous while, significantly reduce outlet dust concentration, make outlet dust concentration reach minimum discharge.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. Two-way Cycle washing wet flue gas high-efficiency desulfurization and a high-effective dust-removing integrated apparatus, be a spray absorber, be provided with smoke inlet (1) at the bottom of tower, top is provided with exhanst gas outlet (2), it is characterized in that:
The tower body bottommost of described spray absorber is absorption tower stock tank (3);
The top on described absorption tower stock tank (3) sets gradually primary cycle spray washing district (5), secondary cycle spray washing district (6) from bottom to top and removes fog-zone (7);
Described primary cycle spray washing district (5) is followed successively by primary cycle flue gas commutating zone (51), first order absorption district (52), one-level slurries spraying layer (53) from bottom to top;
Described secondary cycle spray washing district (6) is followed successively by secondary slurry collecting disc (61), secondary cycle flue gas commutating zone (62), secondary uptake zone (63) and secondary slurries spraying layer (64) from bottom to top;
High effective flue gas rectifier is all provided with in described primary cycle flue gas commutating zone (53) and secondary cycle flue gas commutating zone (64);
Described except establishing high efficiency demister (71) in fog-zone (7);
Be provided with serum recycle pipe between described absorption tower stock tank (3) and one-level slurries spraying layer (53), spray-absorption tower bottom is provided with absorption tower air inlet pipe and gypsum discharge pipe;
The side of described spray absorber is provided with secondary cycle slurry tank (8), and the outside of described secondary cycle slurry tank (8) has pipeline to connect secondary slurries spraying layer (64) and secondary slurry collecting disc (61) respectively.
2. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 and high-effective dust-removing integrated apparatus, it is characterized in that: described high effective flue gas rectifier is shutter annulus eddy flow rectifier, shutter annulus eddy flow rectifier is that circular commutator segment forms by multilayer, the cross section of each commutator segment and horizontal direction are 40 ° and tilt, and staggered floor is arranged, plays segmentation bubble.
3. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 and high-effective dust-removing integrated apparatus, it is characterized in that: described serum recycle pipe is provided with primary cycle slush pump (9), the pipeline that secondary cycle slurry tank (8) connects secondary slurries spraying layer (64) is provided with secondary cycle slush pump (10), described gypsum discharge pipe is provided with gypsum excavationg pump (4), and absorption tower air inlet pipe is provided with absorption tower oxidation fan (11).
4. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 and high-effective dust-removing integrated apparatus, it is characterized in that: described high efficiency demister (71) is ridge demister, ridge blade pitgh controls at below 25mm, and ridge demister droplet content is no more than 20mg/Nm
3.
5. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 and high-effective dust-removing integrated apparatus, is characterized in that: the slurry volume that the degree of depth on described absorption tower stock tank (3) meets absorption tower stock tank (3) makes the serum recycle time of staying be not less than 5 minutes.
6. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 and high-effective dust-removing integrated apparatus, is characterized in that: the distance of described one-level slurries spraying layer (53) distance at the bottom of tower is for stock tank height and meet flue gas and to be not less than height sum required by 3.5s in first order absorption district (52) time of staying.
7. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 and high-effective dust-removing integrated apparatus, it is characterized in that: described secondary slurry collecting disc (61) is not less than 3m from the distance of one-level slurries spraying layer (53), secondary slurries spraying layer (64) is from tower top except the distance of fog-zone (7) is not less than 2m, and the distance of secondary slurry collecting disc (61) and secondary slurries spraying layer (64) is not less than height required by 3s for meeting flue gas in secondary uptake zone (63) time of staying.
8. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 and high-effective dust-removing integrated apparatus, is characterized in that: described high efficiency demister (71) is not less than 1m with the distance of tower top.
9. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 1 ~ 8 any one and high-effective dust-removing integrated apparatus, is characterized in that: the pH scope of the washing slurries of described one-level slurries spraying layer (53) is 4.8 ~ 5.2.
10. a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization according to claim 9 and high-effective dust-removing integrated apparatus, is characterized in that: the pH scope of the washing slurries of described secondary slurries spraying layer (64) is 5.8 ~ 6.2.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106621780A (en) * | 2017-03-01 | 2017-05-10 | 武汉立为工程技术有限公司 | Efficient single-tower double-circulation devulcanizing dust removing device |
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| CN107158921A (en) * | 2017-07-10 | 2017-09-15 | 北京青山绿野环保科技有限公司 | A kind of ultra-clean exhaust system of coal burning flue gas desulfurization dedusting |
| CN107213776A (en) * | 2017-06-29 | 2017-09-29 | 姜顺民 | The outer double circulation desulphurization system of tower and its sulfur removal technology |
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| CN108479368A (en) * | 2018-03-16 | 2018-09-04 | 浙江天蓝环保工程有限公司 | A kind of micro- eddy flow deep desulfuration dedusting absorption tower device and technique |
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| CN113559654A (en) * | 2021-08-11 | 2021-10-29 | 江苏天楹环保能源成套设备有限公司 | Oily dust-containing odor treatment device and treatment method thereof |
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| CN106166440A (en) * | 2016-08-30 | 2016-11-30 | 杭州玺清环保科技有限公司 | A kind of twin-stage four district zoarium high effective desulphurization device |
| CN106621780A (en) * | 2017-03-01 | 2017-05-10 | 武汉立为工程技术有限公司 | Efficient single-tower double-circulation devulcanizing dust removing device |
| CN106914123A (en) * | 2017-03-30 | 2017-07-04 | 成都申川节能环保工程有限公司 | A kind of efficient desulfurizing tower |
| CN107213776A (en) * | 2017-06-29 | 2017-09-29 | 姜顺民 | The outer double circulation desulphurization system of tower and its sulfur removal technology |
| CN107158921A (en) * | 2017-07-10 | 2017-09-15 | 北京青山绿野环保科技有限公司 | A kind of ultra-clean exhaust system of coal burning flue gas desulfurization dedusting |
| CN107812447A (en) * | 2017-11-06 | 2018-03-20 | 宁波大学 | A kind of ship tail gas wash mill |
| CN107812447B (en) * | 2017-11-06 | 2024-04-12 | 宁波大学 | Ship tail gas washing device |
| CN108479368A (en) * | 2018-03-16 | 2018-09-04 | 浙江天蓝环保工程有限公司 | A kind of micro- eddy flow deep desulfuration dedusting absorption tower device and technique |
| CN108479368B (en) * | 2018-03-16 | 2020-09-18 | 浙江天蓝环保工程有限公司 | Micro-rotational flow deep desulfurization and dust removal absorption tower device and process |
| CN108554157A (en) * | 2018-05-17 | 2018-09-21 | 北京国电龙源环保工程有限公司 | A kind of single column washing Wet fume sweetening dust remover of no stock tank secondary cycle |
| CN113559654A (en) * | 2021-08-11 | 2021-10-29 | 江苏天楹环保能源成套设备有限公司 | Oily dust-containing odor treatment device and treatment method thereof |
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