CN101185841A - Absorptive tower absorbent supplying system - Google Patents
Absorptive tower absorbent supplying system Download PDFInfo
- Publication number
- CN101185841A CN101185841A CNA2007101208596A CN200710120859A CN101185841A CN 101185841 A CN101185841 A CN 101185841A CN A2007101208596 A CNA2007101208596 A CN A2007101208596A CN 200710120859 A CN200710120859 A CN 200710120859A CN 101185841 A CN101185841 A CN 101185841A
- Authority
- CN
- China
- Prior art keywords
- supplying system
- lime stone
- limestone
- absorbent supplying
- tower absorbent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000002745 absorbent Effects 0.000 title claims abstract description 28
- 239000002250 absorbent Substances 0.000 title claims abstract description 28
- 235000019738 Limestone Nutrition 0.000 claims abstract description 79
- 239000006028 limestone Substances 0.000 claims abstract description 79
- 239000002002 slurry Substances 0.000 claims description 67
- 239000007788 liquid Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract description 6
- 238000006477 desulfuration reaction Methods 0.000 abstract description 3
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 239000010440 gypsum Substances 0.000 description 7
- 229910052602 gypsum Inorganic materials 0.000 description 7
- 230000003009 desulfurizing effect Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
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Abstract
The invention provides a simple and practical absorption tower and absorbent supplying system which can effectively solve the problem of blockage in places like a rotational flow station and a pipeline in a desulfurization system. The absorption tower and absorbent supplying system includes a limestone serosity case (6), and a limestone serosity preparation system provided with a limestone set ball mill (1), a limestone serosity hydrocyclone (2), a grinder serosity recirculation pump (3) and a grinder serosity recirculation case (4), wherein, the invention is also provided with a filtering apparatus (5) which is installed between the limestone serosity hydrocyclone (2) and the limestone serosity case (6); the filtering apparatus (5) is installed on an overflow pipeline of the limestone serosity hydrocyclone (2); the bottom of the filtering apparatus is communicated to the limestone serosity case (6).
Description
Technical field
The present invention relates to absorptive tower absorbent supplying system, in particular to the absorptive tower absorbent supplying system that is used for lime stone gypsum wet flue gas desulfurizing system.
Background technology
Lime stone gypsum wet flue gas desulfurizing technology is a kind of at more a kind of desulfur technology of China's application.
This technology is agstone to be added water make slurries and pump into the absorption tower as absorbent and fully contact mixing with flue gas, calcium carbonate in sulfur in smoke and the slurries and the air that blasts from the tower bottom carry out oxidation reaction and generate calcium sulfate, after calcium sulfate reached certain saturation degree, crystallization formed dihydrate gypsum.The gypsum slurries of discharging through the absorption tower makes its water content less than 10% through concentrating, dewatering, and delivers to the gypsum bunker with conveyer then and stacks, and the flue gas after the desulfurization is removed droplet through demister, after through the heat exchanger heat temperature raising, enters atmosphere by chimney.Because absorption tower inner absorbent slurries circulate repeatedly by circulating pump and contact with flue gas, the absorbent utilization rate is very high, and calcium sulfur ratio is lower, and desulfuration efficiency can be greater than 95%.
In lime stone gypsum wet flue gas desulfurizing system, be equipped with the limestone slurry liquid preparing system, so-called wet type limestone slurry liquid preparing system is meant, adopt wet ball mill, in the cylinder in a certain proportion of lime stone and the filtered water adding wet-milling, grind out qualified lime stone slurry.And as the lime stone raw material, in the exploitation storage and transportation process, have some wooden tips and other fibre object inevitably, so the impurity that grinds some big particle diameters in the process at slurries will come filtering by the big filter screen of lime stone ball mill outlet.Lime stone slurry grinds that some tiny foreign material then can enter desulphurization system with slurries in the process.The desulfurizing item of operation does not mostly continue to handle to this part tiny foreign material now, thereby, in discharge of desulfurizing byproduct gypsum and processing procedure, plaster serum rotational flow station etc. locate because of circulation area little, can cause eddy flow to stop up, influence the normal operation of system, and bring very big inconvenience, increased a lot of workloads to repair and maintenance.
Summary of the invention
In view of above-mentioned technical problem, the invention provides a kind of simple and practical absorptive tower absorbent supplying system, can effectively solve in the desulphurization system rotational flow station, pipeline etc. and locate blocking problem.
Absorptive tower absorbent supplying system provided by the invention comprises: limestone slurry liquid preparing system and lime stone slurry case with lime stone wet ball mill, limestone slurry liquid swirler, grinding machine slurries recirculation pump and grinding machine slurries recycling tank, wherein, also be provided with filter, described filter is installed between described limestone slurry liquid swirler and the described lime stone slurry case, described filter is installed on the overflow pipe of described limestone slurry liquid swirler, and the filter bottom is communicated to described lime stone slurry case.
According to the present invention, owing to be provided with filter, thus the tiny foreign material that can simple and effective removal enter with slurries, thus avoid upstream device to stop up, realized that desulphurization system moves normally.
As a further improvement on the present invention, described filter is installed on the overflow slurry high-line conduit of described lime stone cyclone outlet conduit.
Because filter is installed on the overflow slurry high-line conduit of lime stone cyclone, connect very easy, so can reduce investment cost.
In addition, described filter is a filter net device, comprise: have the outlet that the shell of support member, double-deck filter screen with holes are connected with the bottom, described filter screen is installed on the described outer casing inner wall by described support member, and described outlet is communicated to described lime stone slurry case.
Preferably, described filter screen with holes is stainless steel, and in addition, the aperture of filter screen is 3mm～7mm, and the perforate gross area is more than 2.5 times of the through-flow moving area of outlet.
Because filter screen is preferably stainless steel and makes, and has some mesh on the plate, perforated area is more than 2.5 times of the through-flow moving area of outlet, so it is smooth and easy to guarantee to flow.
Preferably, the aperture of filter screen is preferably φ 5mm.
Because during filter screen was installed in the case, filter screen was made two, in time dirty filter screen was cleaned so that be in operation, and guaranteed filter effect.
Described shell is made by plastic material sheet material, and preferably, described shell is made by the PVC plate.
Because the medium that filter net device flows into does not have pressure, shell can be plastic material sheet material, preferably makes with the PVC plate, so do not need to consider corrosion-proof lining.
Preferably, described filter net device is uncovered.
Because filter is an open design, so have practicality in desulphurization system, equipment simply is convenient to cleaning.
Description of drawings
Fig. 1 is the flow chart of absorptive tower absorbent supplying system;
Fig. 2 is the cutaway view of the filter net device shown in the presentation graphs 1.
Description of reference numerals:
1 lime stone wet ball mill
2 limestone slurry liquid swirlers
3 grinding machine slurries recirculation pumps
4 grinding machine slurries recycling tanks
5 filter net devices
6 lime stone slurry casees
7 absorption towers
51 shells
52 filter screens
53 support members
54 outlets
The specific embodiment
Below, in conjunction with the accompanying drawings and by embodiment limestone slurry liquid preparing system of the present invention is described.
Fig. 1 is the flow chart of absorptive tower absorbent supplying system.In Fig. 1, Reference numeral 1 expression lime stone wet ball mill, 2 expression limestone slurry liquid swirlers, 3 expression grinding machine slurries recirculation pumps, 4 expression grinding machine slurries recycling tanks, 5 expression filters, 6 expression lime stone slurry casees, 7 expression absorption towers.Absorptive tower absorbent supplying system comprises limestone slurry liquid preparing system, filter 5 and lime stone slurry case 6, wherein, the capital equipment of above-mentioned limestone slurry liquid preparing system comprises wet ball mill 1, limestone slurry liquid swirler 2, grinding machine slurries recirculation pump 3, grinding machine slurries recycling tank 4 and corresponding auxiliary equipment etc.
Fig. 2 is the cutaway view of the filter net device 5 shown in the presentation graphs 1.In Fig. 2, filter net device 5 comprises: have the outlet 54 that shell 51, the metal system filter screen 52 with holes of support member 53 is connected with the bottom, described filter screen 52 is installed on the inwall of shell 51 by described support member 53.
Lime stone wet ball mill 1 is used for grinding lime stone slurry, in the cylinder in a certain proportion of lime stone and the filtered water adding lime stone wet ball mill 1, grinds lime stone slurry.
Limestone slurry liquid swirler 2 is a kind of devices that lime stone slurry carried out the thickness separation, the lime stone slurry that is ground by lime stone wet ball mill 1 is subjected to further separation, thinner lime stone enters into filter net device 5, thicker lime stone turns back in the wet ball mill 1 as the cyclone underflow, grinds again.
Filter net device 5 is installed on the pipeline of lime stone cyclone 2, acceptance is filtered the impurity that contains from the thinner lime stone slurry of limestone slurry liquid swirler 2, after filter screen 52 filters, flow out from the outlet at bottom pipe, enter into downstream lime stone slurry case 6.
In absorption tower 7, the lime stone slurry through filtering that supply is come fully contacts mixing as absorbent with flue gas, thereby carries out desulphurization reaction.
As shown in Figure 1, in absorptive tower absorbent supplying system, described filter net device 5 is installed between described limestone slurry liquid swirler 2 and the described lime stone slurry case 6, described filter 5 is installed on the overflow pipe of described limestone slurry liquid swirler 2, the outlet 54 of bottom is communicated to described lime stone slurry case 6, and lime stone slurry case 6 is connected with absorption tower 7; In addition, in the limestone slurry liquid preparing system, the outlet of lime stone ball mill 1 is connected with limestone slurry liquid swirler 2, the underflow pipe of limestone slurry liquid swirler 2 is connected to ball mill 1 again, so that the thicker limestone particle that will separate grinds again, squeeze into rotational flow station again through grinding machine slurries recycling tank 4 and recirculation pump then and carry out next one circulation.
Among the embodiment in the present invention, for preventing that stopping state from appearring in the desulphurization system downstream unit, as shown in Figure 1, in absorptive tower absorbent supplying system, be provided with the filter that is used for filtering the impurity in the lime stone slurry, filter is a filter net device 5 in the present embodiment.
Filter net device 5 is installed on the outlet conduit of limestone slurry liquid swirler 2, is preferably, and is installed on the overflow pipe of lime stone cyclone, be high-line conduit, the medium that filter net device 5 flows into is not pressed because of having herein, so, shell 1 can be made with the sheet material of plastic material, is preferably the PVC plate and makes.
By the lime stone overflow slurry that the limestone slurry liquid preparing system grinds out, from the top inflow of filter net device 5, after filter screen 52 filtered, outlet 54 outflows from the bottom entered into downstream lime stone slurry case 6.Filter net device 5 is preferably uncovered device, filter screen 2 is made by metallic plate, being preferably corrosion resistant plate makes, the size of opening some on the plate is the mesh of 3mm～7mm, be preferably the 5mm mesh, no matter how many mesh is taken as, and will guarantee that all the perforate gross area should be greater than more than 2.5 times of flow area of outlet 4, thereby it is smooth and easy to guarantee to flow.Filter screen 52 is installed in middle and lower part in the case, and filter screen is made two, in time dirty filter screen is cleaned so that be in operation, and guarantees filter effect.
In sum, absorptive tower absorbent supplying system of the present invention has following advantage and effect, has practicality in desulphurization system that is:, and equipment simply is convenient to cleaning, and investment cost is low.
The above only is embodiments of the present invention, for the person of ordinary skill of the art, under the premise of not departing from the present invention, can also make some distortion and improvement, and these also should be considered as in protection scope of the present invention.
Claims (10)
1. absorptive tower absorbent supplying system, comprise: limestone slurry liquid preparing system and lime stone slurry case (6) with limestone slurry liquid swirler (2), it is characterized in that, also be provided with filter, described filter one end is connected with the outlet conduit of described limestone slurry liquid swirler (2), and the other end is communicated to described lime stone slurry case (6).
2. absorptive tower absorbent supplying system according to claim 1 is characterized in that, described filter is installed on the high-line conduit of lime stone cyclone (2) outlet overflow pipe.
3. absorptive tower absorbent supplying system according to claim 2, it is characterized in that, described filter is filter net device (5), comprise: have the outlet (54) that the shell (51) of support member (53), filter screen with holes (52) are connected with the bottom, described filter screen (52) is installed on shell (51) inwall by described support member (53), and described outlet (54) is communicated to described lime stone slurry case (6).
4. absorptive tower absorbent supplying system according to claim 3 is characterized in that, described filter screen (52) is made for stainless steel.
5. absorptive tower absorbent supplying system according to claim 4 is characterized in that, the aperture of filter screen is 3mm～7mm, and the perforate gross area is more than 2.5 times of flow area of outlet (54).
6. absorptive tower absorbent supplying system according to claim 4 is characterized in that, the aperture of described filter screen (52) is 5mm.
7. according to each described absorptive tower absorbent supplying system of claim 3～6, it is characterized in that described shell (51) is made by plastic material sheet material.
8. absorptive tower absorbent supplying system according to claim 7 is characterized in that, described plastic material sheet material is the PVC plate.
9. according to each described absorptive tower absorbent supplying system in the claim 3,4,5,6,8, it is characterized in that described filter net device (5) is uncovered.
10. absorptive tower absorbent supplying system according to claim 7 is characterized in that, described filter (5) is uncovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101208596A CN101185841A (en) | 2007-08-28 | 2007-08-28 | Absorptive tower absorbent supplying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101208596A CN101185841A (en) | 2007-08-28 | 2007-08-28 | Absorptive tower absorbent supplying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101185841A true CN101185841A (en) | 2008-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101208596A Pending CN101185841A (en) | 2007-08-28 | 2007-08-28 | Absorptive tower absorbent supplying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101185841A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416295A (en) * | 2011-10-19 | 2012-04-18 | 中国神华能源股份有限公司 | Flue gas desulfurization system |
| CN106000561A (en) * | 2016-07-01 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Mill pulp circulating system |
| CN107413178A (en) * | 2017-07-21 | 2017-12-01 | 华润电力（贺州）有限公司 | A kind of mutual dewatering system of falling desulfurization slurry of double tower |
-
2007
- 2007-08-28 CN CNA2007101208596A patent/CN101185841A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416295A (en) * | 2011-10-19 | 2012-04-18 | 中国神华能源股份有限公司 | Flue gas desulfurization system |
| CN106000561A (en) * | 2016-07-01 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Mill pulp circulating system |
| CN107413178A (en) * | 2017-07-21 | 2017-12-01 | 华润电力（贺州）有限公司 | A kind of mutual dewatering system of falling desulfurization slurry of double tower |
| CN107413178B (en) * | 2017-07-21 | 2023-04-28 | 华润电力（贺州）有限公司 | Double-tower mutually inverted desulfurization slurry dehydration system |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20090612 Address after: 4 floor, intercontinental tower 16, ande Road, Dongcheng District, Beijing, zip code: 100011 Applicant after: China Shenhua Energy Co Co-applicant after: Shenhua Guohua (Beijing) Electric Power Research Institute Co., Ltd. Address before: 4 floor, intercontinental tower 16, ande Road, Dongcheng District, Beijing, zip code: 100011 Applicant before: China Shenhua Energy Co Co-applicant before: Beijing Guohua Electric Power Engineering Technology Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |