CN203469801U - Desulfurized ash-limestone mixing and slurrying device - Google Patents
Desulfurized ash-limestone mixing and slurrying device Download PDFInfo
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- CN203469801U CN203469801U CN201320373124.5U CN201320373124U CN203469801U CN 203469801 U CN203469801 U CN 203469801U CN 201320373124 U CN201320373124 U CN 201320373124U CN 203469801 U CN203469801 U CN 203469801U
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- desulphurization
- limestone
- desulfurized ash
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- lime stone
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Abstract
The utility model discloses a desulfurized ash-limestone mixing and slurrying device, comprising a mixing pool, a slurry storage pool, a desulfurized ash-limestone crushing system connected with the mixing pool, and a hydraulic cyclone separator connected between the mixing pool and the slurry storage pool. Limestone is mixed with water and the mixture is crushed to obtain limestone raw material liquid, desulfurized ash is mixed water and the mixture is crushed to obtain desulfurized ash raw material liquid, and the limestone raw material liquid and the desulfurized ash raw material liquid are uniformly mixed to obtain desulfurized ash-limestone slurry; then, cyclone separation is carried out on the desulfurized ash-limestone slurry, and top flow slurry obtained after the cyclone separation is collected. According to the desulfurized ash-limestone mixing and slurrying device disclosed by the utility model, a wet ball mill is used for controlling the particle size of the limestone, and a homogenizer is used for controlling the particle size of the desulfurized ash and fully separating the effective components CaSO3 and f-CaO in the desulfurized ash to improve the utilization rates of the limestone and the desulfurized ash so as to improve the desulfurization efficiency and the gypsum quality.
Description
Technical field
The utility model relates to Desulphurization recycling and flue gas desulfurization technique field, is specifically related to a kind of Desulphurization-lime stone mixed pulp device.
Background technology
Calcium method sulfur removal technology divides wet method, dry method and semidry method, and wherein dry method/semidry method has the features such as desulfurizing byproduct is dry powder-shaped, technique water consumption is low, equipment simple, small investment, is applicable to medium and small coal-fired unit.But the Desulphurization complex chemical composition that sweetening process forms, impurity content is high, wherein SiO
2, Al
2o
3, Fe
2o
3content 3.5%～40%, and in dry method/semidry method desulphurization tower, the dry powder spraying into, water, mixing desulfurization product, flyash etc., adhered to one another, be bundled together, and forms bulky grain Desulphurization.Desulphurization recycling has been subject to strict restriction.
Owing to containing a large amount of CaSO in Desulphurization
3and f-CaO, the ability still with sulfur dioxide absorption, can be used as desulfurization absorbent recycling, application number is that 201110441588.0 Chinese invention patent application has been announced a kind of technique and system of utilizing Desulphurization to prepare wet desulphurization agent, and (1) is mixed to get Desulphurization slurries by Gan Fa semi-dry process flue gas desulphurization ash with water; (2) in described Desulphurization slurries, add surfactant, mix rear rotational flow separation; (3) the underflow slurries of getting after rotational flow separation are oxidized, and then sieve to obtain wet desulphurization agent.Device comprises cinder-flushing groove, changes stock tank, cyclone, oxidation pond and spin vibration sieve, describedization stock tank is positioned at the outlet below of cinder-flushing groove, the outlet of describedization stock tank is communicated with cyclone, and described cyclone underflow outlet is communicated with oxidation pond, and described oxidation pond outlet is communicated with spin vibration sieve.Dry method/semidry method desulphurization ash slurries through flushing cinder pond, change stock tank, cyclone, oxidation pond and spin vibration sieve, finally enter finished pulp flow container, the method has been carried out simple gradation and calcium sulfite oxidation to Desulphurization, not only Desulphurization utilization rate is low, and oxidized rear its desulfurization capacity of calcium sulfite reduces greatly.
The patent No. is the processing method that the Chinese invention patent of ZL 200910194833.5 discloses a kind of Desulphurization, the Desulphurization that dry method/semidry method desulphurization technique produces mixes in proportion with agstone, raw material as desulfurizing agent in wet fuel gas desulfurizing technology, after stirring, desulfurizing agent pumps into slurry pool of absorption tower, catalyst is allocated in slurry pool, in slurry pool, pass into oxidation air, flue gas enters slurry pool by flue, desulfurizing agent under the effect of oxidation air and catalyst with flue gas in SO
2reaction, control slurry pH value in absorption tower, slurry temperature, the content of contained solid matter in slurries, the time of staying of desulfurizing agent in slurry pool, react completely after, vacuum filtration concentrated by eddy flow and obtain gypsum by-product, the waste water producing in technique enters fresh water (FW) collecting box, carries out cycling and reutilization.This patent discloses the raw material that Desulphurization and lime stone is mixed in proportion to desulfurizing agent in wet fuel gas desulfurizing technology, but the method is prepared desulfurizing agent according to the feature of Desulphurization and lime stone.
Utility model content
The utility model provides a kind of Desulphurization-lime stone mixed pulp device, and Desulphurization and lime stone are mixed as wet flue gas disengaging absorbent, has not only reduced the consumption of lime stone, and has realized the recycling of Desulphurization.
Desulphurization-lime stone mixed pulp device, comprises mixing pit and pulp storage tank, also comprises: the Desulphurization-limestone crushing system being connected with described mixing pit and be connected to the hydrocyclone between described mixing pit and pulp storage tank.
After Desulphurization and limestone crushing, carry out slurrying, slurries are carried out to rotational flow separation, remove not broken bulky grain, improve the quality of finished product slurries.
A preferred technical scheme, described Desulphurization-limestone crushing system comprises:
The first weigh belt feeder and wet ball mill of series connection successively, the discharging opening of described wet ball mill connects described mixing pit;
Successively second of series connection weigh belt feeder, change stock tank and measuring pump, describedization stock tank is connected with described mixing pit by measuring pump.
Further preferably, describedization stock tank is provided with homogenizer, and the charging aperture of this homogenizer is communicated with the bottom of describedization stock tank, and the discharging opening of this homogenizer is communicated with the top of describedization stock tank.
Under the effect of homogenizer stator, stator and rotor rationally form the comprehensive effects such as strong, reciprocal fluid power shearing, friction, centrifugal extruding, the collision of liquid stream in narrow gap, reach object broken, separated Desulphurization, active ingredient NaOH, CaO in Desulphurization are separated, be fully used.
In order to have prevented that fragmentation, separated Desulphurization bulky grain from entering mixing pit, more preferably, the pipeline porch that connects measuring pump in describedization stock tank is furnished with filter membrane, and the aperture of described filter membrane is 35 μ m～50 μ m.In order to prevent that filter membrane from stopping up, in pipeline, be furnished with back purge system, regularly filter membrane is rinsed.
The bottom of changing stock tank is provided with the first slurries outlet, this slurries outlet connects homogenizer, changes the bottom of stock tank, and is provided with the second slurries outlet apart from 0.5～1.0m place, bottom, this slurries outlet is communicated with mixing pit by measuring pump, can be delivered to mixing pit by changing Desulphurization slurries in stock tank.
As preferably, in described wet ball mill, the proportion of composing of ball-milling medium is: 12mm:20mm:40mm:60mm:80mm:100mm=0.97:1.72:3.00:4.15:1.00: 1.20.
As preferably, the outlet of the underflow of described hydrocyclone is connected to the charging aperture of described wet ball mill.Hydrocyclone underflow bulky grain flows back to again wet ball mill.
The present invention adopts homogenizer to the cutting that circulates of the bulky grain of Desulphurization, reduces particle diameter, isolates more active ingredient, improves Desulphurization utilization rate; Utilize wet ball mill to carry out fragmentation to limestone block, reduce limestone particle size, improve lime stone utilization rate.
The mixing quality ratio of the interpolation quality of the present invention by the quantitative control lime stone such as Weighing feeder, measuring pump, Desulphurization and lime stone and Desulphurization, makes Desulphurization in suitable proportion, can not only
Desulphurization is utilized effectively, can also improves to a certain extent desulfuration efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model stock tank.
Shown in figure, Reference numeral is as follows:
The 1-first belt feeder 2-second belt feeder 3-wet ball mill of weighing of weighing
4-mixing pit 5-ization stock tank 6-homogenizer
7-hydrocyclone 8-pulp storage tank 9-measuring pump
The specific embodiment
As shown in Figure 1, a kind of Desulphurization-limestone pulping device, comprises limestone crushing system A, Desulphurization crushing system B, mixed pulp system C.
Limestone crushing system A is in series by the first weigh belt feeder 1 and wet ball mill 3, and the charging aperture place of wet ball mill 3 is also provided with fresh water (FW) pipeline; Desulphurization crushing system B by second weigh belt feeder 2, change stock tank 5 and measuring pump 9 is in series; Mixed pulp system C is in series by mixing pit 4, hydrocyclone 7 and pulp storage tank 8.
Limestone crushing system A and Desulphurization crushing system B are in parallel, and connect with mixed pulp system C at mixing pit 4 places, and wherein hydrocyclone 7 underflow outlets are communicated with the charging aperture of wet ball mill 3 by pipeline.
The power 55KW of wet ball mill 3, ball load 5t, the proportion of composing of ball-milling medium is: 12mm:20mm:40mm:60mm:80mm:100mm=0.97:1.72:3.00:4.15:1:00: 1.20.
Change the profile of stock tank 5 as shown in Figure 2, the bottom of changing stock tank 5 is provided with the first slurries outlet 501, this slurries outlet connects homogenizer 6, change the bottom of stock tank 5 and be provided with the second slurries outlet 502 apart from 0.5～1.0m place, bottom, this slurries outlet is connected with measuring pump 9 by pipeline, can be delivered to mixing pit 4, the second slurries and export 502 connecting pipeline porch and be furnished with filter membrane 504, filter membrane aperture 45 μ m changing the interior Desulphurization slurries of stock tank 5.In order to prevent that filter membrane from stopping up, in pipeline, be furnished with back purge system 503, regularly filter membrane is rinsed.
The charging aperture of homogenizer 6 is communicated with the first slurries outlet 501 of changing stock tank 5, and discharging opening is communicated with the top of changing stock tank 5.
Change in stock tank 5, mixing pit 4 and pulp storage tank 8 and be provided with agitator, the porch of changing stock tank 5, mixing pit 4 and pulp storage tank 8 is equipped with industry water pipeline.
The unified flow process of present embodiment is as follows:
1. first weigh belt feeder by the limestone block after sintering processes quantitative be delivered into wet ball mill; At wet ball mill inlet, add quantitative water simultaneously, it is 1:10～1:2 that lime stone and water add mass ratio, and lime stone is polished in wet ball mill, broken, stirring, forms uniform lime stone virgin pulp liquid, wet ball mill discharging opening limestone particle size is less than 45 μ m, sieving rate 90%.
2. second weigh belt feeder by the quantitative conveying evolution stock tank of Desulphurization; In changing stock tank, add quantitative water, it is 1:4～1:1 that Desulphurization and water add mass ratio simultaneously, and water and Desulphurization are fully stirred in changing stock tank, form uniform Desulphurization slurries; Change stock tank slurries and be conveyed in homogenizer from bottom, after circulation cutting, from top, flow back to again circulation cutting times: 3-8 time.The pipeline entrance membrane aperture 45 μ m that connect measuring pump.
3. control the parameter of measuring pump, quantitative the pumping in mixing pit of Desulphurization virgin pulp liquid of changing in stock tank mixed with lime stone virgin pulp liquid, wherein the mass ratio of Desulphurization and lime stone is 7:3～1:3.In mixing pit, inject quantitative water, make the interior slurries concentration stabilize of mixing pit 10%～30%.
4. the mixed serum in mixing pit is pumped into hydrocyclone, utilize density contrast that different-grain diameter solid particle is carried out to rotational flow separation, hydrocyclone top stream solid grain size is less than 45 μ m, and hydrocyclone underflow bulky grain flows back to again wet ball mill.
(5) hydrocyclone top flows to into pulp storage tank, adds quantitative water simultaneously, makes the interior slurries concentration stabilize of pulp storage tank 10%～30%.
The foregoing is only better implementation example of the present utility model, be not limited to the utility model, all within the utility model spirit and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. Desulphurization-lime stone mixed pulp device, comprises mixing pit and pulp storage tank, it is characterized in that, also comprises: the Desulphurization-limestone crushing system being connected with described mixing pit and be connected to the hydrocyclone between described mixing pit and pulp storage tank.
2. Desulphurization-lime stone mixed pulp device according to claim 1, is characterized in that, described Desulphurization-limestone crushing system comprises:
The first weigh belt feeder and wet ball mill of series connection successively, the discharging opening of described wet ball mill connects described mixing pit;
Successively second of series connection weigh belt feeder, change stock tank and measuring pump, describedization stock tank is connected with described mixing pit by measuring pump.
3. Desulphurization-lime stone mixed pulp device according to claim 2, it is characterized in that, describedization stock tank is provided with homogenizer, and the charging aperture of this homogenizer is communicated with the bottom of describedization stock tank, and the discharging opening of this homogenizer is communicated with the top of describedization stock tank.
4. Desulphurization-lime stone mixed pulp device according to claim 3, is characterized in that, the pipeline porch that connects measuring pump in describedization stock tank is furnished with filter membrane, and the aperture of described filter membrane is 35 μ m～50 μ m.
5. Desulphurization-lime stone mixed pulp device according to claim 4, it is characterized in that, in described wet ball mill, the proportion of composing of ball-milling medium is: 12mm:20mm:40mm:60mm:80mm:100mm=0.97:1.72:3.00:4.15:1.00: 1.20.
6. Desulphurization-lime stone mixed pulp device according to claim 2, is characterized in that, the underflow outlet of described hydrocyclone is connected to the charging aperture of described wet ball mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320373124.5U CN203469801U (en) | 2013-06-26 | 2013-06-26 | Desulfurized ash-limestone mixing and slurrying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320373124.5U CN203469801U (en) | 2013-06-26 | 2013-06-26 | Desulfurized ash-limestone mixing and slurrying device |
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| CN203469801U true CN203469801U (en) | 2014-03-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959018A (en) * | 2015-06-25 | 2015-10-07 | 浙江天蓝环保技术股份有限公司 | Device and method for redesulfuration with desulfurization ash |
| CN105032227A (en) * | 2015-08-07 | 2015-11-11 | 浙江天蓝环保技术股份有限公司 | Desulfurization ash slag-carbide slag mixed slurry preparing device and method |
| CN107983518A (en) * | 2017-11-27 | 2018-05-04 | 大唐贵州发耳发电有限公司 | A kind of device and its technique for improving limestone slurry liquid case internal limestone slurries granularity |
| CN112221339A (en) * | 2019-07-15 | 2021-01-15 | 宝山钢铁股份有限公司 | Wet desulphurization device and method for dry desulphurization ash |
| CN113499724A (en) * | 2021-07-12 | 2021-10-15 | 翱华工程技术股份有限公司 | Carbide slag slurry manufacturing equipment, carbide slag slurry manufacturing method and carbide slag slurry |
| CN114247281A (en) * | 2020-09-22 | 2022-03-29 | 宝山钢铁股份有限公司 | Method for cooperatively treating desulfurized ash by wet desulfurization system |
-
2013
- 2013-06-26 CN CN201320373124.5U patent/CN203469801U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959018A (en) * | 2015-06-25 | 2015-10-07 | 浙江天蓝环保技术股份有限公司 | Device and method for redesulfuration with desulfurization ash |
| CN105032227A (en) * | 2015-08-07 | 2015-11-11 | 浙江天蓝环保技术股份有限公司 | Desulfurization ash slag-carbide slag mixed slurry preparing device and method |
| CN105032227B (en) * | 2015-08-07 | 2018-03-06 | 浙江天蓝环保技术股份有限公司 | A kind of apparatus and method of desulfurization ash carbide slag mixed pulp |
| CN107983518A (en) * | 2017-11-27 | 2018-05-04 | 大唐贵州发耳发电有限公司 | A kind of device and its technique for improving limestone slurry liquid case internal limestone slurries granularity |
| CN112221339A (en) * | 2019-07-15 | 2021-01-15 | 宝山钢铁股份有限公司 | Wet desulphurization device and method for dry desulphurization ash |
| CN114247281A (en) * | 2020-09-22 | 2022-03-29 | 宝山钢铁股份有限公司 | Method for cooperatively treating desulfurized ash by wet desulfurization system |
| CN113499724A (en) * | 2021-07-12 | 2021-10-15 | 翱华工程技术股份有限公司 | Carbide slag slurry manufacturing equipment, carbide slag slurry manufacturing method and carbide slag slurry |
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Granted publication date: 20140312 |