CN103408231B - A kind of environment-friendly type lime slaking and technology of the package - Google Patents
A kind of environment-friendly type lime slaking and technology of the package Download PDFInfo
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- CN103408231B CN103408231B CN201310213964.XA CN201310213964A CN103408231B CN 103408231 B CN103408231 B CN 103408231B CN 201310213964 A CN201310213964 A CN 201310213964A CN 103408231 B CN103408231 B CN 103408231B
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Abstract
The invention discloses a kind of environment-friendly type lime slaking and technology of the package, carry out environmental protection treatment by operation sections different in lime slaking process---dust arrester totally four processing of sack cleaner, pulse dust collector, the processing of shower nozzle water curtain, three grades of digester upper cover gas outlets, ensure that the vapours that produces in lime process and the treatment effeciency of dust reach more than 99%, solved the problem of environmental pollution that lime slaking is produced; In addition, the packing of product after lime slaking is also with dedusting structure, and technical process does not have environmental protection dead point, and whole flow process is controlled by PLC, has reduced hand labor intensity, has improved production efficiency; The white lime of the different size that the present invention produces is respectively used to the industries such as steel mill's sintering desulfuration system, chemical plant, alkaline, sugaring, sewage disposal, paint, coating, toothpaste, pharmacy.
Description
Technical field:
The present invention relates to lime slaking processing, relate in particular to a kind of environment-friendly type lime slaking and technology of the package.
Background technology:
Lime slaking process is the important component part of water treatment, Air Pollution Control and some chemical industry, affects treatment effeciency and the operating cost of whole process.
Lime can discharge a large amount of vapours and dust while adding water digestion, and site environment is caused to serious pollution. Existing method is to adopt wet-treating and electric precipitation method, and first, wet-treating is to utilize nature negative pressure emission steam and dust, but easily causes discharge tube to stop up and cause the complete equipment cannot trouble-free operation; Secondly, electric precipitation method is that dusty gas is separated by electricity during through high-voltage electrostatic field, grit is combined and is brought after negative electricity with anion, and trend anode surface discharges and deposits, but the heat steam of supervening in digestion process and wet dust can produce serious corrosive effect to equipment etc.
To sum up state, in environmental protection treatment, there is serious deficiency in current lime slaking processing technology, therefore, can bring serious pollution to production environment, the environmental issue of how processing in lime slaking process is a current difficult problem urgently to be resolved hurrily, in addition, it is reasonable not that lime slaking processing technology is connected with technology of the package, improved the complexity of technology of the package processing.
Summary of the invention:
In order to make up prior art problem, the object of this invention is to provide a kind of environment-friendly type lime slaking and technology of the package, select different processing structures in different operation sections, improve greatly the efficiency of processing, processing environment is guaranteed, digestion process and technology of the package are connected rationally, improve the reasonability of technique.
Technical scheme of the present invention is as follows:
Environment-friendly type lime slaking and technology of the package, is characterized in that, specifically comprises the following steps:
1), adopt belt feeder to send into surge tank quick lime, fall into material conveying trolley through surge tank discharging opening, with the amount of average 1 ~ 30 ton per hour, quick lime is inputted to fine crusher equably, through fine crusher, the quick lime of bulk is broken into the thin piece of 2 ~ 5mm size, the dust producing in shattering process, enter sack cleaner by surge tank upper cover pipeline and refining dolly tail end upper pipe and stoped flour dust overflow, be referred to as the first environmental protection treatment;
2), thin the quick lime after fragmentation piece is sent into raw material cabin through the first bucket elevator, the upper and lower material level meter being electrically connected with PLC control system is housed at raw material cabin outer wall, control the thin piece amount of quick lime in raw material cabin, when pulse dust collector is housed at raw material cabin top stops in feed bin Bas Discharged, dust is excessive, is referred to as the second environmental protection treatment;
3), the thin piece of the quick lime in raw material cabin is sent into the first screw feeder, spiral meter electronics, three grades of digesters successively by the first slide valve control, in three grades of digesters, add water and digest 10 ~ 15min, below three grades of digester upper cover gas outlets, be provided with three groups of shower nozzles, spray the three horizontal face walls in road, a large amount of steam, flour dust overflow that blocking-up quick lime produces in digestion process, be referred to as the 3rd environmental protection treatment;
4) part steam, the dust of, overflowing from the horizontal face wall of three groups of shower nozzle ejections enter dust arrester through three grades of digester upper cover gas outlets---deduster, take into account the controls such as magnetic valve by control valve, flow, make dust and steam enter dust arrester water tank by dust gathering arrester and cleaning shaft, finally from exhaust outlet, Purge gas is discharged; Dust removal efficiency reaches more than 99%, and dust removing effects can reach every cube of dustiness of exhaust outlet and be no more than 30 milligrams, is referred to as the 4th environmental protection treatment;
5) by the white lime having digested in three grades of digesters in step 3, its water content < 1.5%, sends into the second bucket elevator by the second screw feeder, then sends into powder concentrator, adopts secondary sorting, three grades of sortings, is meal by material " is divided into three "---d>150 μ m, middle powder---60 μ m ~ 150 μ m, fine powder---d<60 μ m, grinding efficiency reaches more than 92%;
Described environment-friendly type lime slaking and technology of the package, it is characterized in that: by the powder of the different brackets after sorting in step 5, respectively through triple helical pusher, the 4th screw feeder is sent into the 3rd bucket elevator, the 4th bucket elevator, the 3rd bucket elevator, it is upper that the 4th bucket elevator is all electrically connected with pulse dust collector with PLC control system, lower level-sensing device is convenient to control inventory, the 3rd bucket elevator, the 4th bucket elevator is sent powder into the first finished bin, the second finished bin, the first finished bin, the second finished bin discharging opening is respectively by the second slide valve, the 3rd slide valve control transports material to baling press and carries out packaging and warehousing.
Advantage of the present invention is:
Technological design of the present invention is reasonable, carry out environmental protection treatment by operation sections different in lime slaking process---dust arrester totally four processing of sack cleaner, pulse dust collector, the processing of shower nozzle water curtain, three grades of digester upper cover gas outlets, ensure that the vapours that produces in lime process and the treatment effeciency of dust reach more than 99%, solved the problem of environmental pollution that lime slaking is produced; In addition, the packing of product after lime slaking is also with dedusting structure, and technical process does not have environmental protection dead point, and whole flow process is controlled by PLC, has reduced hand labor intensity, has improved production efficiency.
Brief description of the drawings:
Fig. 1 is the process chart of invention.
Fig. 2 is machining flow chart of the present invention, in figure: 11-three grades of digesters of 1-surge tank, 2-sack cleaner, 3-refining dolly, 4-fine crusher, 5-the first bucket elevator 6-raw material cabin 7-pulse dust collector 8-the first slide valve 9-the first screw feeder 10-spiral meter, 12-the second screw feeder 13-the second bucket elevator 14-powder concentrator 15-the triple helical pusher 16-the three bucket elevator 17-the first finished bin 18-the four screw feeder 19-the four bucket elevator 20-the second finished bin 21-baling press 22-dust arrester 23-the second slide valve 24-the three slide valve A-magnetic valve B-flowmeter C-electric control valve D-upper level-sensing device E-lower level-sensing device.
Detailed description of the invention:
Referring to Fig. 1:
Environment-friendly type lime slaking and technology of the package, is characterized in that, specifically comprises the following steps:
1), adopt belt feeder to send into surge tank quick lime, fall into material conveying trolley through surge tank discharging opening, with the amount of average 1 ~ 30 ton per hour, quick lime is inputted to fine crusher equably, through fine crusher, the quick lime of bulk is broken into the thin piece of 2 ~ 5mm size, the dust producing in shattering process, enter sack cleaner by surge tank upper cover pipeline and refining dolly tail end upper pipe and stoped flour dust overflow, be referred to as the first environmental protection treatment;
2), thin the quick lime after fragmentation piece is sent into raw material cabin through the first bucket elevator, the upper and lower material level meter being electrically connected with PLC control system is housed at raw material cabin outer wall, control the thin piece amount of quick lime in raw material cabin, when pulse dust collector is housed at raw material cabin top stops in feed bin Bas Discharged, dust is excessive, is referred to as the second environmental protection treatment;
3), the thin piece of the quick lime in raw material cabin is sent into the first screw feeder, spiral meter electronics, three grades of digesters successively by the first slide valve control, in three grades of digesters, add water and digest 10 ~ 15min, below three grades of digester upper cover gas outlets, be provided with three groups of shower nozzles, spray the three horizontal face walls in road, a large amount of steam, flour dust overflow that blocking-up quick lime produces in digestion process, be referred to as the 3rd environmental protection treatment;
4) part steam, the dust of, overflowing from the horizontal face wall of three groups of shower nozzle ejections enter dust arrester through three grades of digester upper cover gas outlets---deduster, take into account the controls such as magnetic valve by control valve, flow, make dust and steam enter dust arrester water tank by dust gathering arrester and cleaning shaft, finally from exhaust outlet, Purge gas is discharged; Dust removal efficiency reaches more than 99%, and dust removing effects can reach every cube of dustiness of exhaust outlet and be no more than 30 milligrams, is referred to as the 4th environmental protection treatment;
5) by the white lime having digested in three grades of digesters in step 3, its water content < 1.5%, sends into the second bucket elevator by the second spiral pusher, then sends into powder concentrator, adopts secondary sorting, three grades of sortings, is meal by material " is divided into three "---d>150 μ m, middle powder---60 μ m ~ 150 μ m, fine powder---d<60 μ m, select component efficiency to reach more than 92%;
By the powder of the different brackets after sorting in step 5, respectively through triple helical pusher, the 4th screw feeder is sent into the 3rd bucket elevator, the 4th bucket elevator, the 3rd bucket elevator, it is upper that the 4th bucket elevator is all electrically connected with pulse dust collector with PLC control system, lower level-sensing device is convenient to control inventory, the 3rd bucket elevator, the 4th bucket elevator is sent powder into the first finished bin, the second finished bin, the first finished bin, the second finished bin discharging opening is respectively by the second slide valve, the 3rd slide valve control transports material to baling press and carries out packaging and warehousing.
Concrete method of operating is as follows:
Quick lime (CaO) is sent into surge tank refining dolly by belt feeder, by the amount of average 1 ~ 30 ton per hour, quick lime is inputted to fine crusher equably（4）Fine crusher is broken into the quick lime of bulk the thin piece of 3mm size. The dust producing in shattering process, enters sack cleaner by surge tank upper cover pipeline and refining dolly tail end upper pipe and has stoped flour dust overflow (first environmental protection treatment).
Microlith ash after fragmentation enters to be carried machine by bucket type liter and sends into raw material cabin, and upper and lower material level meter is housed on raw material cabin, and its can be delivered instruction to PLC control system and control, full or expect all can send inadequate in the situation that signal at material. Pulse dust collector is equipped with at top at feed bin, and its effect is dust excessive (second environmental protection treatment) while stoping in feed bin Bas Discharged.
Lime enters screw feeder by the control of electric brake plate valve, then enters spiral meter electronics, enters three grades of digesters by the amount of lime of needs per hour, adds water and digests in proportion. First pass through the spiral propeller of the first order, required lime is sent in one-level slaking silos, a large amount of vapours and the dust adverse current that stop quick lime and water Contact to produce enter the accuracy that spiral electronics feed claims to affect transducing signal. Can control lime slaking process by multiple adjustment mode (as frequency converter, blanking stop reprint etc.) and reach 8 ~ 12 minutes in three grades of dry powder digester cabins, quick lime is fully digested. Unique design makes the amount of heat producing in quick lime course of reaction in the utilization of digester internal conversion, promotes inner quicklime slaking material temperature, is conducive to quick lime and fully digests. There are three channel showerheads in digester upper cover gas outlet, the ejection three horizontal face walls in road, a large amount of steam, flour dust overflow that blocking-up quick lime produces in digestion process, make the dust that enters next procedure reduce (San road environmental protection treatment).
Part steam, the dust of overflowing from the horizontal face wall of three groups of shower nozzle ejections enter dust arrester through three grades of digester upper cover gas outlets---deduster, its effect is that a large amount of dust and the steam that quick lime produces in three grades of digester digestion processes enters dust arrester water tank by dust gathering arrester and cleaning shaft, make dust vapor filter through in water by blower negative pressure in deduster inside, after dust vapor is processed completely, finally from exhaust outlet, Purge gas is discharged. In processing dust vapor process, water in deduster water tank becomes warm sludge pulp-water by absorption dust vapor, then by the high pressure slurry pump of deduster, high temperature mud water is squeezed into waterpipe, recycle in the lime slaking water of burnt lime digester, his dust removal efficiency reaches more than 99%. Dust removing effects can reach every cube of dustiness of exhaust outlet and be no more than 30 milligrams (national standards: every cubic metre of dustiness < 150 milligram), finally realized energy efficiency and solved the problem of environmental pollution of flying dust all over the sky, above-mentioned Wei tetra-road environmental protection treatment.
Digest white lime (Ca(OH)2) (water content<1.5%) enter spiral pusher and send into bucket elevator and send into powder concentrator again; Can select the efficient three composition dividing powder separating machine of T-sepax, adopt aviation aerodynamics analysis method, adopt secondary sorting, three grades of sortings, can be by material " is divided into three " meal (d>150 μ m), (60 μ m ~ 150 μ m), (d<60 μ m) for fine powder for middle powder.
The group particle that the pre-separation of one-level stepped zone goes out in mixed powder is collected in meal heap; Secondary stepped zone is Accurate Classification region, in the annular region forming, completes at guide vane and straight cage-type rotor, has got rid of the interference of thick because pre-separation goes out corase particles, and therefore, classification accuracy is high, selects component efficiency to reach more than 92%. The powder of the different brackets after sorting, enters respectively screw feeder and enters bucket elevator and enter feed bin, enters baling press carry out packaging and warehousing by the control of electric brake plate valve.
Claims (1)
1. environment-friendly type lime slaking and a technology of the package, is characterized in that, specifically comprises the following steps:
1) adopt belt feeder to send into surge tank quick lime, fall into material conveying trolley through surge tank discharging opening, with the amount of average 1 ~ 30 ton per hour, quick lime is inputted to fine crusher equably, through fine crusher, the quick lime of bulk is broken into the thin piece of 2 ~ 5mm size, the dust producing in shattering process, enter sack cleaner by surge tank upper cover pipeline and material conveying trolley tail end upper pipe and stoped flour dust overflow, be referred to as the first environmental protection treatment;
2) thin the quick lime after fragmentation piece is sent into raw material cabin through the first bucket elevator, the upper and lower material level meter being electrically connected with PLC control system is housed at raw material cabin outer wall, control the thin piece amount of quick lime in raw material cabin, when pulse dust collector is housed at raw material cabin top stops in feed bin Bas Discharged, dust is excessive, is referred to as the second environmental protection treatment;
3) the thin piece of the quick lime in raw material cabin is sent into the first screw feeder, spiral meter electronics, three grades of digesters successively by the first slide valve control, in three grades of digesters, add water and digest 10 ~ 15min, below three grades of digester upper cover gas outlets, be provided with three groups of shower nozzles, spray the three horizontal face walls in road, a large amount of steam, flour dust overflow that blocking-up quick lime produces in digestion process, be referred to as the 3rd environmental protection treatment;
4) part steam, the dust of overflowing from the horizontal face wall of three groups of shower nozzle ejections enter dust arrester through three grades of digester upper cover gas outlets---deduster, take into account solenoid control by control valve, flow, make dust and steam enter dust arrester water tank by dust gathering arrester and cleaning shaft, finally from exhaust outlet, Purge gas is discharged; Dust removal efficiency reaches more than 99%, and dust removing effects can reach every cube of dustiness of exhaust outlet and be no more than 30 milligrams, is referred to as the 4th environmental protection treatment;
5) by the white lime having digested in three grades of digesters in step 3), its water content<1.5%, send into the second bucket elevator by the second screw feeder, send into again powder concentrator, adopt secondary sorting, three grades of sortings, be meal by material " is divided into three "---d>150 μ m, middle powder---60 μ m ~ 150 μ m, fine powder---d<60 μ m, grinding efficiency reaches more than 92%;
By the powder of the different brackets after sorting in step 5), respectively through triple helical pusher, the 4th screw feeder is sent into the 3rd bucket elevator, the 4th bucket elevator, the 3rd bucket elevator, it is upper that the 4th bucket elevator is all electrically connected with pulse dust collector with PLC control system, lower level-sensing device is convenient to control inventory, the 3rd bucket elevator, the 4th bucket elevator is sent powder into the first finished bin, the second finished bin, the first finished bin, the second finished bin discharging opening is respectively by the second slide valve, the 3rd slide valve control transports material to baling press and carries out packaging and warehousing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310213964.XA CN103408231B (en) | 2013-06-01 | 2013-06-01 | A kind of environment-friendly type lime slaking and technology of the package |
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| CN201310213964.XA CN103408231B (en) | 2013-06-01 | 2013-06-01 | A kind of environment-friendly type lime slaking and technology of the package |
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| CN103408231B true CN103408231B (en) | 2016-05-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104496204B (en) * | 2014-12-25 | 2016-09-07 | 岳俊峰 | Energy-saving and high efficient dry method calcium hydroxide production line |
| CN104609745B (en) * | 2015-01-21 | 2016-10-26 | 南宁苏格尔科技有限公司 | A kind of sugaring uses the production control method of lime cream |
| CN106045339B (en) * | 2016-06-01 | 2018-05-29 | 中冶长天国际工程有限责任公司 | Quicklime slaking, batch mixing and dust collecting process and device |
| CN106630689A (en) * | 2016-12-24 | 2017-05-10 | 建德市全新钙业有限公司 | Preparation method of building paint grade ash calcium powder |
| CN109704601B (en) * | 2019-02-15 | 2021-03-26 | 四川和临科技发展有限公司 | Lime slaking process for producing nano-scale calcium hydroxide |
| CN111995263B (en) * | 2020-07-20 | 2022-05-31 | 建德华明科技有限公司 | Preparation method for producing precipitated calcium carbonate by dry-method digestion of calcium oxide |
| CN112374775A (en) * | 2020-12-08 | 2021-02-19 | 襄阳聚曐矿业有限公司 | Quick lime efficient digestion device and digestion method |
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