CN101898083B - Method and device for preparing dry desulfurizing agent by using carbide slag - Google Patents
Method and device for preparing dry desulfurizing agent by using carbide slag Download PDFInfo
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- CN101898083B CN101898083B CN2010102431032A CN201010243103A CN101898083B CN 101898083 B CN101898083 B CN 101898083B CN 2010102431032 A CN2010102431032 A CN 2010102431032A CN 201010243103 A CN201010243103 A CN 201010243103A CN 101898083 B CN101898083 B CN 101898083B
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Abstract
The invention discloses a method and a device for preparing a dry desulfurizing agent by using carbide slag, and relates to a dry desulfurizing agent. The invention provides a dry desulfurizing agent preparation device with low equipment investment, low running cost and pollution avoidance and a preparation method for the dry desulfurizing agent. The device is provided with a carbide slag weighing device, a carbide slag conveying device, a calcined lime weighing device, a calcined lime conveying device, a pre-mixing crushing device and a humidity setting device; the discharge hole of the carbide slag weighing device is connected with the feeding hole of the carbide slag conveying device, and the discharge hole of the carbide slag conveying device is connected with the feeding hole of the pre-mixing crushing device; the discharge hole of the calcined lime weighing device is connected with the feeding hole of the calcined lime conveying device, and the discharge hole of the calcined lime conveying device is connected with the feeding hole of the pre-mixing crushing device; and the discharge hole of the pre-mixing crushing device is connected with the feeding hole of the humidity setting device, the bottom of the humidity setting device is provided with a slaked lime discharge hole, and the top of the humidity setting device is provided with an exhaust port. Carbide slag and calcined lime powder are premixed to obtain a solid mixture, and carbide slag humidity setting and calcined lime digestion are performed to obtain slaked lime powder.
Description
Technical field
The present invention relates to a kind of dry-desulphurizer, especially relate to a kind of method and apparatus that utilizes carbide slag to prepare dry-desulphurizer.
Background technology
Polyvinyl chloride (PVC) is one of five big general synthetic resins, and PVC production mainly contains carbide and two kinds of preparation technologies of ethylene process, is main in China with carbide, and its output accounts for about 70% of PVC total output.According to the statistics made by the departments concerned, China PVC production capacity was 1,581 ten thousand tons in 2008,8,820,000 tons of output.The carbide slag main component is Ca (OH)
2, be the trade waste that carbide is produced PVC, consume calcium carbide 1.5～1.6t by 1 ton of PVC product of the every production of experience, calcium carbide simultaneously per ton produces 1.2t carbide slag (butt).Normally with the wet basis discharging, easy to leak pollutes the road surface to carbide slag in transit, and long-term accumulation not only takies a large amount of soils, and there are serious erosion and contamination in soil and water body.China will discharge more than 1,000 ten thousand tons of carbide slags (butt) every year, and about 40% carbide slag has obtained integrated treatment, and still to store up or landfill is main, the environment bearing pressure is big for all the other.
At present, carbide slag is mainly used in cement industry, adopts replacing carbide slag with lime stone to produce cement; But because the water content of carbide slag is high; Cause in the production process hear rate to yield poorly with kiln than high, the while water vapour content of kiln tail is big, influences the result of use and the life-span of follow-up deduster.The carbide slag flue gas desulfurization of studying is used and is mainly contained two kinds of technologies: carbide slag-gypsum wet sulfur removal technology and dry acetylene sludge powder dry desulfurizing process.The former causes system's burn into fouling, obstruction, equipment attrition fault rate height because carbide slag slurry pH value is difficult to regulate and chlorine ion concentration is high; And the latter will cause that in the carbide slag drying course absorbent quality descends, and drying system energy consumption height, system complex, less economical.
Notification number is that the patent of invention of CN101168117A provides a kind of method of utilizing carbide slag slurries to produce solid desulfurating agent; Through processing such as purification, separation, modified, oven dry, grinding, selection by winnowing, packings, produce active high, desulphurizing ability is strong, the desulfurizing agent of fine size.Notification number is method and the device that the patent of invention of CN101157471A provides a kind of carbide slag to produce lime, and its method is earlier the reaction residue of calcium carbide and water to be removed solids impurity such as ferrosilicon, the pig iron through natural subsidence, obtains emulsion; With the removal of impurities of removing slag of gained emulsion, remove the above various solid impurities of 100 orders again; The emulsion that obtains is carried out Separation of Solid and Liquid, obtain solids and clear water; The solids that obtains is carried out air purge, obtain the calcium hydroxide crystal.
Summary of the invention
The object of the present invention is to provide that a kind of equipment investment is less, operating cost is lower, can avoid the pollution of carbide slag, can reduce the dry-desulphurizer preparation facilities of desulfurization operation cost environment.
Another object of the present invention is to provide a kind of preparation method of dry-desulphurizer.
Said dry-desulphurizer preparation facilities is provided with carbide slag weighing-appliance, carbide slag conveying equipment, quick lime weighing-appliance, quick lime conveying equipment, premixed disintegrating apparatus and the humidity equipment of adjusting; The discharging opening of carbide slag weighing-appliance connects the charging aperture of carbide slag conveying equipment, and the discharging opening of carbide slag conveying equipment connects the charging aperture of premixed disintegrating apparatus; The deliver a child charging aperture of lime weighing-appliance of the discharging opening of quick lime conveying equipment, the discharging opening of quick lime weighing-appliance connects the charging aperture of premixed disintegrating apparatus; The discharging opening of premixed disintegrating apparatus connects the adjust charging aperture of equipment of humidity, and the adjust bottom of equipment of humidity is provided with the calcium hydroxide discharging opening, and the adjust top of equipment of humidity is provided with exhaust outlet.
Said carbide slag weighing-appliance can adopt the carbide slag constant feeder; Said carbide slag conveying equipment can adopt carbide slag belt conveyor or carbide slag bucket elevator; Said quick lime weighing-appliance can adopt quick lime belt weighing machine; Said quick lime conveying equipment can be provided with quick lime storehouse and quick lime screw(-type) feeder; Said premixed disintegrating apparatus can adopt the twin shaft stirring conveyor; The said humidity equipment of adjusting can be provided with one-level mixer, secondary mixer, bottom ash ejector and exhaust sack cleaner; The secondary mixer is located at one-level mixer bottom; The bottom ash ejector is located at secondary mixer bottom, and the exhaust sack cleaner is connected with one-level mixer, secondary mixer and the top vent of bottom ash ejector.
The preparation method of said dry-desulphurizer uses the dry-desulphurizer preparation facilities, may further comprise the steps:
1) carbide slag and calcium lime powder are carried out premixed, get carbide slag and calcium lime powder solid mixture;
2) carbide slag and the calcium lime powder solid mixture that step 1) are obtained carry out carbide slag humidity and adjust and quicklime slaking in humidity is adjusted equipment, get calcium hydroxide powder, i.e. slaked lime powder.
In step 1), said carbide slag and calcium lime powder can be carbide slag by mass ratio: calcium lime powder=1: (0.4～1).
Compare with existing carbide slag Desulfurization Application method, the present invention has following outstanding advantage and technique effect:
1) the carbide slag utilization rate is high, need not increase complicated carbide slag treatment facility; 2) technological process is simple, only needs that carbide slag after premixed and the back fragmentation and calcium lime powder fixed body mixture are carried out humidity and adjusts and digest, and system equipment is few, control simply, floor space is little; 3) construction investment is few, and operating cost and desulfurizing agent production cost are low; 4) energy-conservation, water saving, the treatment of wastes with processes of wastes against one another realizes recycling economy.
Description of drawings
Fig. 1 is that the structure of dry-desulphurizer preparation facilities embodiment according to the invention is formed sketch map.
In Fig. 1, respectively be labeled as: 1, carbide slag constant feeder, 2, the carbide slag belt conveyer; 3, quick lime storehouse, 4, the quick lime screw(-type) feeder, 5, quick lime belt weighing machine; 6, premixed disintegrating machine, 7, the carbide slag humidity machine of adjusting, 8, the one-level mixer; 9, secondary mixer, 10, the bottom ash ejector, 11, the exhaust sack cleaner.
The specific embodiment
As shown in Figure 1, dry-desulphurizer preparation facilities embodiment according to the invention is provided with carbide slag weighing-appliance (adopt carbide slag constant feeder 1), carbide slag conveying equipment (adopting carbide slag belt conveyer 2), quick lime conveying equipment (adopting quick lime storehouse 3 and quick lime screw(-type) feeder 4), quick lime weighing-appliance (adopting quick lime explanation belt weighing machine 5), premixed disintegrating apparatus (adopting premixed disintegrating machine 6) and the humidity equipment (employing carbide slag humidity adjust machine 7) of adjusting; The discharging opening of carbide slag constant feeder 1 connects the charging aperture of carbide slag belt conveyer 2, and the discharging opening of carbide slag belt conveyer 2 connects the charging aperture of premixed disintegrating machine 6.The deliver a child charging aperture of lime screw(-type) feeder 4 of quick lime storehouse 3 discharging openings of quick lime weighing-appliance; The deliver a child charging aperture of lime belt weighing machine 5 of the discharging opening of quick lime screw(-type) feeder 4, the discharging opening of quick lime belt weighing machine 5 connects the charging aperture of premixed disintegrating machine 6; The discharging opening of premixed disintegrating machine 6 connects the adjust charging aperture of one-level mixer 8 of machine 7 of carbide slag humidity; Secondary mixer 9 is located at one-level mixer 8 bottoms; The charging aperture of secondary mixer 9 connects the discharging opening of one-level mixer 8; Bottom ash ejector 10 is located at secondary mixer 9 bottoms, and the charging aperture of bottom ash ejector 10 connects the discharging opening of secondary mixer 8, and exhaust sack cleaner 11 is connected with one-level mixer 8, secondary mixer 9 and the top vent of bottom ash ejector 10.The bottom of bottom ash ejector 10 is provided with calcium hydroxide discharging opening C.In Fig. 1, A is the carbide slag charging aperture, and B is the calcium lime powder charging aperture, and M is a motor.
Said premixed disintegrating machine 6 can adopt the twin shaft stirring conveyor.
In Fig. 1,
Below provide the preparation method embodiment of said dry-desulphurizer, use the dry-desulphurizer preparation facilities, may further comprise the steps:
1) carbide slag and calcium lime powder are carried out premixed, get carbide slag and calcium lime powder solid mixture; Said carbide slag and calcium lime powder can be carbide slag by mass ratio: calcium lime powder=1: (0.4～1).
2) carbide slag and the calcium lime powder solid mixture that step 1) are obtained carry out carbide slag humidity and adjust and quicklime slaking in humidity is adjusted equipment, get calcium hydroxide powder, i.e. slaked lime powder.
Embodiment 1: the quality of carbide slag is: Ca (OH)
2Content 66%, water content 30%; The quality of calcium lime powder is: CaO content is 65%, particle diameter≤1mm; The proportioning of carbide slag and calcium lime powder is 1: 1.Carbide slag gets into constant feeder through charging hopper and weighs, and after weighing, sends into premixer through belt conveyor and tentatively mixes and fragmentation with the quick lime that behind quick lime storehouse, screw(-type) feeder and belt weighing machine, quantitatively adds.Material after mixing gets into the carbide slag humidity machine of adjusting.In humidity is adjusted machine, carry out carbide slag humidity adjust with quicklime slaking reaction 60min after, obtain slaked lime powder, its quality is: 90% calcium hydroxide particle diameter is less than 125um, water content 1.52%, Ca (OH)
2Content 80%.
Embodiment 2: the quality of carbide slag is: Ca (OH)
2Content 60%, water content 35%; The quality of calcium lime powder is: CaO content is 85%, particle diameter≤1mm; The proportioning of carbide slag and calcium lime powder is 1: 0.4.
Carbide slag gets into constant feeder through charging hopper and weighs, and after weighing, sends into premixer through belt conveyor and tentatively mixes and fragmentation with the quick lime that behind quick lime storehouse, screw(-type) feeder and belt weighing machine, quantitatively adds.Material after mixing gets into the carbide slag humidity machine of adjusting.In humidity is adjusted machine, carry out carbide slag humidity adjust with quicklime slaking reaction 60min after, the slaked lime powder that obtains, its quality is: 95% calcium hydroxide particle diameter is less than 125um, water content 0.27%, Ca (OH)
2Content 90%.
Embodiment 3: similar with embodiment 1, its difference is that the proportioning of carbide slag and calcium lime powder is 1: 0.8.
Embodiment 4: similar with embodiment 2, its difference is that the proportioning of carbide slag and calcium lime powder is 1: 0.6.
Claims (8)
1. dry-desulphurizer preparation facilities is characterized in that being provided with carbide slag weighing-appliance, carbide slag conveying equipment, quick lime weighing-appliance, quick lime conveying equipment, premixed disintegrating apparatus and the humidity equipment of adjusting; The discharging opening of carbide slag weighing-appliance connects the charging aperture of carbide slag conveying equipment, and the discharging opening of carbide slag conveying equipment connects the charging aperture of premixed disintegrating apparatus; The deliver a child charging aperture of lime weighing-appliance of the discharging opening of quick lime conveying equipment, the discharging opening of quick lime weighing-appliance connects the charging aperture of premixed disintegrating apparatus;
The said humidity equipment of adjusting is provided with one-level mixer, secondary mixer, bottom ash ejector and exhaust sack cleaner; The discharging opening of premixed disintegrating apparatus connects the charging aperture of one-level mixer; The secondary mixer is located at one-level mixer bottom; The charging aperture of secondary mixer connects the discharging opening of one-level mixer, and the bottom ash ejector is located at secondary mixer bottom, and the charging aperture of bottom ash ejector connects the discharging opening of secondary mixer; The exhaust sack cleaner is connected with one-level mixer, secondary mixer and the top vent of bottom ash ejector, and the bottom of bottom ash ejector is provided with the calcium hydroxide discharging opening.
2. dry-desulphurizer preparation facilities as claimed in claim 1 is characterized in that said carbide slag weighing-appliance is the carbide slag constant feeder.
3. dry-desulphurizer preparation facilities as claimed in claim 1 is characterized in that said carbide slag conveying equipment is carbide slag belt conveyor or carbide slag bucket elevator.
4. dry-desulphurizer preparation facilities as claimed in claim 1 is characterized in that said quick lime weighing-appliance is a quick lime belt weighing machine.
5. dry-desulphurizer preparation facilities as claimed in claim 1 is characterized in that said quick lime conveying equipment is provided with quick lime storehouse and quick lime screw(-type) feeder.
6. dry-desulphurizer preparation facilities as claimed in claim 1 is characterized in that said premixed disintegrating apparatus is the twin shaft stirring conveyor.
7. the preparation method of dry-desulphurizer is characterized in that, uses dry-desulphurizer preparation facilities as claimed in claim 1, and said preparation method may further comprise the steps:
1) carbide slag and calcium lime powder are carried out premixed, get carbide slag and calcium lime powder solid mixture;
2) carbide slag and the calcium lime powder solid mixture that step 1) are obtained carry out carbide slag humidity and adjust and quicklime slaking in humidity is adjusted equipment, get calcium hydroxide powder, i.e. slaked lime powder.
8. the preparation method of dry-desulphurizer as claimed in claim 7 is characterized in that in step 1), and said carbide slag and calcium lime powder are carbide slag by mass ratio: calcium lime powder=1: 0.4～1.
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| CN2010102431032A CN101898083B (en) | 2010-07-30 | 2010-07-30 | Method and device for preparing dry desulfurizing agent by using carbide slag |
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| CN2010102431032A CN101898083B (en) | 2010-07-30 | 2010-07-30 | Method and device for preparing dry desulfurizing agent by using carbide slag |
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| CN101898083A CN101898083A (en) | 2010-12-01 |
| CN101898083B true CN101898083B (en) | 2012-09-26 |
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| CN102068898B (en) * | 2010-12-04 | 2013-07-17 | 宁夏博浩环保技术有限公司 | Composite calcium-based solid desulfurizer and production method thereof |
| CN102423624B (en) * | 2011-10-24 | 2013-09-04 | 浙江菲达脱硫工程有限公司 | Apparatus and method for preparing high-activity calcium hydroxide by using carbide slag alkali residue |
| CN102976639A (en) * | 2012-11-06 | 2013-03-20 | 镇江市电站辅机厂有限公司 | Quicklime slaking system |
| CN103752147B (en) * | 2014-01-21 | 2016-03-16 | 福建龙净脱硫脱硝工程有限公司 | A kind of dry-desulphurizer and preparation method thereof |
| CN103880056B (en) * | 2014-02-26 | 2016-03-02 | 钟文庭 | A kind of carbide slag prepares the preparation method of calcium hydroxide |
| CN104437023A (en) * | 2014-12-05 | 2015-03-25 | 阜康市莱蒙钙业有限公司 | Method for producing calcium hydroxide desulfurizer by utilizing waste acetylene sludge |
| CN105669053B (en) * | 2016-04-15 | 2018-08-24 | 范洪喜 | A kind of technical grade calcium hydroxide production device and its production technology |
| CN106512696A (en) * | 2016-10-31 | 2017-03-22 | 内蒙古包钢钢联股份有限公司 | A circulating-fluidized-bed-method flue gas desulphurization process and a circulating-fluidized-bed-method flue gas desulphurization system |
| CN108622674A (en) * | 2017-03-15 | 2018-10-09 | 上海洋野流体设备有限公司 | A kind of transport system applied to desulfurizing agent in dry desulfurization |
| CN107213779A (en) * | 2017-06-19 | 2017-09-29 | 青海盐湖工业股份有限公司 | A kind of production system and production technology of carbide slag desulfurizing agent |
| CN108249465B (en) * | 2018-01-23 | 2023-12-05 | 辽宁邦加钙业有限公司 | Production equipment and production process for preparing calcium hydroxide by using carbide slag |
| CN108423683B (en) * | 2018-03-30 | 2021-09-14 | 新疆蓝山屯河能源有限公司 | Method for producing calcium carbide raw material lime balls by using dry acetylene carbide slag |
| CN112125537B (en) * | 2020-09-28 | 2022-01-04 | 辽宁鑫钙环保科技有限公司 | Industrial preparation technology of calcium hydroxide |
| CN113149467A (en) * | 2021-03-15 | 2021-07-23 | 西安西矿环保科技有限公司 | Quicklime slaking pulping system for semidry flue gas desulfurization |
| CN114011834A (en) * | 2021-10-15 | 2022-02-08 | 江苏中圣园科技股份有限公司 | Carbide slag calcines reduction retrieval and utilization carbide stove coproduction desulfurizer system |
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