CN205127725U - Novel reducing desulfurization absorption tower - Google Patents

Novel reducing desulfurization absorption tower Download PDF

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Publication number
CN205127725U
CN205127725U CN201520695359.5U CN201520695359U CN205127725U CN 205127725 U CN205127725 U CN 205127725U CN 201520695359 U CN201520695359 U CN 201520695359U CN 205127725 U CN205127725 U CN 205127725U
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reducing
desulfuration absorbing
novel
absorbing tower
tower
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CN201520695359.5U
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刘玉新
刘畅
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Datang Environment Industry Group Co Ltd
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Datang Environment Industry Group Co Ltd
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Abstract

The utility model provides a novel reducing desulfurization absorption tower, include: a tower body includes extremely down on the follow in proper order, a defogging portion, a portion of spraying, a thick liquid portion, it is connected to go up reducing portion through one between defogging portion and the portion of spraying, go up reducing portion and have a diffusion reducing angle, for 100~107, be connected through reducing portion once between thick liquid portion and the portion of spraying, reducing portion has a shrink reducing angle down, for 55~70. Spray simultaneously the section size of the tower body part of layer top and below through the increase of diffusion reducing, can adjust the flow through velocity of flow of defroster of flue gas promptly, can increase limestone slurry's in the desulfurization absorption tower capacity again, guarantee limestone slurry circulation volume sufficiently to make limestone slurry fully contact with flue gas containing sulphur, be particularly useful for utilizing present desulfurization absorption tower, transform in place, the limited circumstances of execution conditions, make it to accord with the emission standard that present environmental protection standard required.

Description

A kind of Novel diameter reducing desulfuration absorbing tower
Technical field
The utility model relates to exhaust-gas treatment field, particularly relates to Wet Flue Gas Desulfurization Technology field, specifically a kind of Novel diameter reducing desulfuration absorbing tower.
Background technology
Containing sulfur dioxide in the flue gas that a lot of industry produces, itself and precipitation merge and form acid rain, meeting serious harm residents ' health, corrosion construction material, destroy ecological environment, cause huge economic loss, become the important environmental factor of restriction Chinese society economic development.The discharge capacity of abatement sulfur dioxide, controlling Atmospheric SO_2 Pollution, environment protection quality, is one of important topic of China environmental protection in the current and following long duration.
Send out change the energy [2014] No. 2093 literary compositions according to " coal electricity energy-saving and emission-reduction upgrading and transformation action plan " (2014-2020), fossil-fired unit will carry out environmental protection upgrading, discharge of major pollutant progressively all realizes minimum discharge, namely, under benchmark oxygen content 6% condition, flue dust, sulfur dioxide, NOx be not respectively higher than 10mg/Nm 3, 35mg/Nm 3, 50mg/Nm 3emission limit.Therefore to existing environmental protection facility carry out minimum discharge transformation be necessary.
Sulfur dioxide pollution control technology is a lot of, such as improve energy resource structure, adopt clean fuel etc., but the irreplaceable technology of SO2 emissions is effectively cut down in flue gas desulfurization.The method of flue gas desulfurization is a lot, according to the general principle of physics and chemistry, can be divided into absorption process, absorption method and catalysis method three kinds substantially.Absorption process is most important, the most widely used method of sulfur dioxide in purifying smoke.Absorption process is divided into again dry method and wet method.
At present, Wet Flue Gas Desulfurization Technology is widely used in industrial waste gas desulfurization, and the principle of existing smoke-gas wet desulfurization utilizes the sulfur dioxide in lime stone slurry and flue gas to react, and Sulphur Dioxide is become gypsum, reach the object removing sulfur dioxide in flue gas, its principle is as follows:
Neutralization reaction: 2CaCO 3+ H 2o+2SO 2=2CaSO 31/2H 2o+2CO 2
Oxidation reaction: 2CaSO 31/2H 2o+O 2+ 3H 2o=2CaSO 42H 2o
In Wet Flue Gas Desulfurization Technology field, the absorption tower body of conventional desulfuration absorbing tower, in order to meet the requirement that desulfurization performance, economic dispatch index and demister normally run, needs to limit design flue gas flow rate scope greatly about 3 ~ 6m/s.The spraying layer on existing absorption tower is unanimous between the higher and lower levels with the diameter of the part below the diameter of upper part and spraying layer.That is the regional extent of tower diameter from smoke inlet to the exhanst gas outlet on demister top is identical.
Existing desulfuration absorbing tower flue gas design current velocity is generally meet demister equipment requirement, and does not realize the maximization of desulfurization performance, economic dispatch index.
In addition, along with the raising of national environmental standard, there is outer last person's gas problem not up to standard in built wet desulfurization system, therefore needs to carry out capacity-increasing transformation to it, but the restriction that the construction of transformation is often subject to again place can not be carried out smoothly.The tower diameter specification of existing desulfuration absorbing tower causes sulfur-containing smoke gas to discharge after demister cannot be up to standard, and then cause being discharged to containing a large amount of drop-shaped gypsum slurries in the tail gas in air, namely occurs the phenomenon of " gypsum rain ".
Chinese utility model patent (patent No.: ZL201420411946.2) discloses a kind of desulfuration absorbing tower, spray portion and demist portion is connected by reducing connecting portion, increase the cross-sectional area in demist portion, reach the object controlling flue gas flow rate, demister is under good operating mode.But by above-mentioned transformation, the problem that the not enough and lime stone slurry of lime stone slurry internal circulating load fully can not contact with sulfur-containing smoke gas still can not be solved.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of novel reducing desulfuration absorbing tower, increase above spraying layer and the sectional dimension of the tower body part of below by diffusion reducing simultaneously, namely flue gas can be regulated to flow through the flow velocity of demister, the capacity of desulfuration absorbing tower sodalime stone slurries can be increased again, ensure that lime stone slurry internal circulating load is sufficient, and lime stone slurry is fully contacted with sulfur-containing smoke gas, be particularly useful for utilizing existing desulfuration absorbing tower, in place, the limited situation of execution conditions is transformed, make it the discharge standard meeting current environmental protection standard requirement.
For reaching above-mentioned purpose, the technical approach that the utility model is taked is:
A kind of Novel diameter reducing desulfuration absorbing tower, comprising:
One tower body, comprises from top to bottom successively; One demist portion, a spray portion, a slurries portion;
Described demist portion is connected by varying diameter portion on between spray portion, and described upper varying diameter portion has a diffusion reducing angle, is 100 ~ 107 °;
Described slurries portion is connected by once varying diameter portion with between spray portion, and described lower varying diameter portion has a contraction reducing angle, is 55 ~ 70 °.
Further, described diffusion reducing angle preferably 105 °, described contraction reducing angle preferably 64 °.
Further, described upper varying diameter portion height is 3-5 rice, and described lower varying diameter portion height is 2-4.5 rice.
Further, described upper varying diameter portion is positioned at 0.9-1.65 rice above described spray portion.
Further, also comprise a smoke inlet, described lower varying diameter portion is positioned at 8-16 rice below described smoke inlet.
Further, described spray portion comprises multiple spraying layer.
Further, the many sprayed slurry pipelines being communicated with described multiple spraying layer and slurries portion are also comprised.
Further, the diameter in described spray portion is 6.5-14.5 rice.
By taking technique scheme, simultaneously by above expansion spray portion and the demist portion of below and the sectional dimension in slurries portion, namely flue gas can be regulated to flow through the flow velocity of demister, the capacity of desulfuration absorbing tower sodalime stone slurries can be increased again, ensure that lime stone slurry internal circulating load is sufficient, and lime stone slurry is fully contacted with sulfur-containing smoke gas.Slurries total amount lengthens circulation timei, and gypsum in slurries can be made fully to precipitate.And structure is simple, stable, be particularly useful for utilizing existing desulfuration absorbing tower, in place, the limited situation of execution conditions transforms, and makes it the discharge standard meeting current environmental protection standard requirement.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation in an embodiment.
Description of reference numerals: 1-tower body; 2-smoke inlet; 3-exhanst gas outlet; 4-spray portion; 5-demist portion; The upper varying diameter portion of 6-; Varying diameter portion under 7-.
Detailed description of the invention
For making above-mentioned feature and advantage of the present utility model become apparent, special embodiment below, and coordinate institute's accompanying drawing to be described in detail below.
As shown in Figure 1, novel reducing desulfuration absorbing tower of the present utility model, comprising: tower body 1, comprises from top to bottom successively; Demist portion 5, spray portion 4 and slurries portion; Spray portion comprises five layers of spraying layer, and as can be seen from the figure, the slurry reaction part that below the spraying layer in the middle part of tower body and spraying layer, flue gas and spraying layer spray, namely can be considered spray portion, its tower diameter is consistent, 6.5-14.5 rice, preferably 12.5 meters.And be connected by upper varying diameter portion 6 between demist portion 5 with spray portion, upper varying diameter portion 6 has a diffusion reducing angle, is 105 °; The slurries portion of bottom is connected by lower varying diameter portion 7 with between spray portion, and lower varying diameter portion 7 has a contraction reducing angle, is 64 °.In fact, above-mentioned only in order to the utility model to be described, the utility model is not as limit, and the quantity of spraying layer can be chosen between 2 ~ 6 layers according to need of work, and diffusion reducing angle can be chosen between 100 ~ 107 °; Shrink reducing angle to choose between 55 ~ 70 °.
In addition, above-mentioned reducing desulfuration absorbing tower also comprises, smoke inlet 2, the sprayed slurry pipeline (not shown) of exhanst gas outlet 3 and connection slurries portion and spraying layer.Upper varying diameter portion 6 is highly 3-5 rice, and lower varying diameter portion 7 is highly 2-4.5 rice.Upper varying diameter portion 6 is positioned at 0.9-1.65 rice above described spray portion, preferably 1 meter.Lower varying diameter portion 7 is positioned at 8-16 rice below smoke inlet 2, preferably 14 meters.
Flue gas enters tower body from smoke inlet 2, first comes spray portion 4 and reacts with sprayed slurry, then by upper varying diameter portion 6, reduces flow velocity, enters demist portion 5, fully remove the serous granule that flue gas carries, avoid " gypsum rain " phenomenon.Meanwhile, the transition that lower varying diameter portion 7 is mild increases the volume in slurries portion, ensures that lime stone slurry internal circulating load is sufficient, and lime stone slurry is fully contacted with sulfur-containing smoke gas.
The utility model structure is simple, stable, is particularly useful for utilizing existing desulfuration absorbing tower, and in place, the limited situation of execution conditions transforms, and makes it the discharge standard meeting current environmental protection standard requirement.There is higher application value.

Claims (8)

1. a Novel diameter reducing desulfuration absorbing tower, is characterized in that, comprising:
One tower body, comprises from top to bottom successively; One demist portion, a spray portion, a slurries portion;
Described demist portion is connected by varying diameter portion on between spray portion, and described upper varying diameter portion has a diffusion reducing angle, is 100 ~ 107 °;
Described slurries portion is connected by once varying diameter portion with between spray portion, and described lower varying diameter portion has a contraction reducing angle, is 55 ~ 70 °.
2. Novel diameter reducing desulfuration absorbing tower as claimed in claim 1, it is characterized in that, described diffusion reducing angle is 105 °, and described contraction reducing angle is 64 °.
3. Novel diameter reducing desulfuration absorbing tower as claimed in claim 1, it is characterized in that, described upper varying diameter portion height is 3-5 rice, and described lower varying diameter portion height is 2-4.5 rice.
4. Novel diameter reducing desulfuration absorbing tower as claimed in claim 1, it is characterized in that, described upper varying diameter portion is positioned at 0.9-1.65 rice above described spray portion.
5. Novel diameter reducing desulfuration absorbing tower as claimed in claim 1, it is characterized in that, also comprise a smoke inlet, described lower varying diameter portion is positioned at 8-16 rice below described smoke inlet.
6. Novel diameter reducing desulfuration absorbing tower as claimed in claim 1, it is characterized in that, described spray portion comprises multiple spraying layer.
7. Novel diameter reducing desulfuration absorbing tower as claimed in claim 6, is characterized in that, also comprises the many sprayed slurry pipelines being communicated with described multiple spraying layer and slurries portion.
8. Novel diameter reducing desulfuration absorbing tower as claimed in claim 1, it is characterized in that, the diameter in described spray portion is 6.5-14.5 rice.
CN201520695359.5U 2015-09-09 2015-09-09 Novel reducing desulfurization absorption tower Active CN205127725U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105126594A (en) * 2015-09-17 2015-12-09 大唐环境产业集团股份有限公司 Variable-diameter desulfurizing tower
CN111530264A (en) * 2020-05-12 2020-08-14 大唐环境产业集团股份有限公司 Novel desulfurization absorption tower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105126594A (en) * 2015-09-17 2015-12-09 大唐环境产业集团股份有限公司 Variable-diameter desulfurizing tower
CN111530264A (en) * 2020-05-12 2020-08-14 大唐环境产业集团股份有限公司 Novel desulfurization absorption tower

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