CN205328232U - Device is failed to improved generation sodium bicarbonate collection - Google Patents
Device is failed to improved generation sodium bicarbonate collection Download PDFInfo
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- CN205328232U CN205328232U CN201620080882.1U CN201620080882U CN205328232U CN 205328232 U CN205328232 U CN 205328232U CN 201620080882 U CN201620080882 U CN 201620080882U CN 205328232 U CN205328232 U CN 205328232U
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Abstract
The utility model discloses a device is failed to improved generation sodium bicarbonate collection, include: a powder transport device, the powder transport device includes the middlings cyclone to the middlings particle separation, middlings cyclone passes through tube coupling middlings strength screw conveyer, middlings strength screw conveyer passes through vibrating feeder and is connected with superfine milling machine, the super powder is worn into with the coarse grain to superfine milling machine, still include the farine cyclone who is connected with the output of superfine milling machine, the super powder of wearing into up to standard gets into farine screw conveyer, farine screw conveyer carries the ultra -fine grain of isolating to the warehouse rather than linking to each other through the pipeline, one with the powder metering device that the warehouse is connected, powder metering device is including the constant speed measurement helical element who is located upper portion speed governing feed helical element and is located the lower part, the cigarette increases the mixing effect of flue gas and powder, comes the pollutant in the desorption flue gas, realizes energy saving and emission reduction's target.
Description
Technical field
This utility model relates to a kind of modified model sodium bicarbonate gathering and transporting device, completes desulphurization and denitration process, can effectively remove the nitrogen oxides in flue gas, oxysulfide and other sour gas so that the flue gas qualified discharge after purification。
Background technology
In recent years, due to going from bad to worse of Domestic Environment situation, energy-conserving and emission-cutting technology is increasingly subject to country's attention, and achieves flourish。NaHCO3 absorption techniques is the desulfurization and denitrification integral technology that a kind of efficiency is higher, and this technology a step can complete desulphurization and denitration process, belongs to integration desulfurization denitration flue gas purifying technique。The pollutant controlling discharge are had significantly high clearance SO2 (> 99.5% by this technique), SO3 (> 99.5%), NOx (> 98%), Mercury hydrargyrum (> 98%), remove the sour gas such as H2SO4, HCl and HF simultaneously。As far back as the seventies, this technology is just found and is considered as best kitchen air contaminant control technology, but the application that excessively high operating cost makes old-fashioned technology is restricted。In recent years, along with the development of air contaminant treatment technology, what this Technology solved NaHCO3 recycles problem, becomes the process system with tremendous expansion potentiality, but this Technology needs to solve some technical bottlenecks simultaneously, so that the performance of this technology and economy reach optimum。
One of core technology as this process system, the powder process of NaHCO3, collects defeated and spraying technique and has decisive influence for the place to go efficiency of the pollutant in flue gas。NaHCO3 has easy deliquescence, the characteristics such as easy decomposition of being heated, the fineness of sodium bicarbonate powder is for improving with the contact area of flue gas pollutant thus improving pollutant removing efficiency and having a significant impact, and how solving the fineness of powder of sodium bicarbonate powder and the contradiction of thermal decomposition in pulverizing process is restrict the bottleneck of this technology；Simultaneously for the sodium bicarbonate powder made, how to ensure that it is carried at a distance, it is to avoid the problems such as the blocking occurred in course of conveying and deliquescence, become the another one problem of this technology；Meanwhile, sodium bicarbonate particle and the Homogeneous phase mixing of flue gas and the haptoreaction time of needs become the guarantee of pollutant removing efficiency。
In recent years, by the restriction of the high operation cost of NaHCO3 absorption techniques, domestic almost without corresponding commercial Application, relevant NaHCO3 sprays, the research of Mixing Technology report is less, the industrial products not having maturation can be purchased, it is necessary to carries out relevant device development, it is achieved technology closed loop。
Utility model content
This utility model solves the technical problem that and is: flue gas flow is big, and powder jetting amount is relatively small。Meeting being uniformly distributed of thin powder body in large space, technical difficulty is relatively big, designs and have developed a kind of modified model sodium bicarbonate gathering and transporting device, by NaHCO3 powder and flue gas Homogeneous phase mixing, increase the mixing effect of flue gas and powder body, remove the pollutant in flue gas, it is achieved the target of energy-saving and emission-reduction。
For reaching above-mentioned purpose, the technical solution of the utility model is as follows:
A kind of modified model sodium bicarbonate gathering and transporting device, including:
One powder transfer device, described powder transfer device includes the coarse powder cyclone separator that coarse powder particles is separated, described coarse powder cyclone separator connects coarse powder strength conveying worm by pipeline, described coarse powder strength conveying worm is connected with superfine mill by oscillating feeder, and coarse granule is worn into micropowder by described superfine mill；
Also including the fine powder cyclone separator that the outfan with superfine mill is connected, the micropowder up to standard worn into enters fine powder conveying worm；Isolated ultra-fine grain is delivered to and its warehouse being connected by pipeline by described fine powder conveying worm；
The one powder metering device being connected with described warehouse, powder flow is carried out accurate measurement by described powder metering device, and the powder body after metering enters powder jetting device；
Described powder metering device includes being positioned at top speed governing feeding serew parts and being positioned at the constant speed metering screw parts of bottom；
Described speed governing feeding serew parts include a feeding serew device, and nesting is arranged at the feeding serew driving device in feeding serew device, and described feeding serew device side is also associated with charging aperture；Described constant speed metering screw parts include a metering screw device, and a nesting is arranged at the metering screw driving device in metering screw device, and described metering screw device side is provided with discharging opening。
In being preferable to carry out at one of the present utility model, described speed governing feeding serew parts also include surrounding the metering reamer being arranged in feeding serew device, and described metering reamer is provided with load sensor。
In a preferred embodiment of the present utility model, at the bottom of the storehouse of described warehouse, it is provided with the gasification installation being sequentially connected with and heater, adds hot-air by gasification installation to conveying in warehouse。
In a preferred embodiment of the present utility model, the upper end of described coarse powder cyclone separator connects sack cleaner, the output pipe of described sack cleaner is provided with air-introduced machine, air-introduced machine provides kinetic energy, gas and ultra-fine grain are drained in air。
By technique scheme, the beneficial effects of the utility model are:
1, adopting the gas-solid injector of diffusion flow-disturbing tubular type, flue gas is divided into two parts after diffusion disturbed flow pipe water conservancy diversion, and the contraction that a part realizes air-flow through diffusion disturbed flow pipe is accelerated；Another part flows through the diffusion realizing air-flow in diffusion disturbed flow pipe and slows down。Two strands of flue gases have bigger current difference, form effective blending in diffusion disturbed flow pipe downstream。
2, outside powder body is injected in diffusion disturbed flow pipe respectively, being uniformly distributed of powder body is realized along with the convection current of main flume blends；
3, being sprayed by the powder body circle of contact, the function influence such as backflow of main flume, powder body mean residence time in flue extends to some extent。
4, optimize the flow field of ejector, reduce the resistance of ejector；
5, system automation degree is high, have employed key parameter linkage and regulates the method for designing with fault alarm interlocking action, improves reliability and safety；
6, possesses effect of integrated desulfurization, denitration and elimination heavy metal。
7, improve the fine powder rate of sodium bicarbonate, it is ensured that fineness of powder, solve sodium bicarbonate powder problem of local pyro lysis in Ultrafine Grinding, it is ensured that fine powder rate。
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is system process figure of the present utility model。
Fig. 2 is the schematic diagram of powder metering device of the present utility model。
Fig. 3 a is the schematic diagram of ejector of the present utility model。
Fig. 3 b is the left view of ejector of the present utility model。
Fig. 4 a is diffusion disturbed flow pipe schematic diagram of the present utility model。
Fig. 4 b is the left view of diffusion disturbed flow pipe of the present utility model。
Fig. 5 is pipeline distributor schematic diagram of the present utility model。
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, this utility model is expanded on further。
See figures.1.and.2, a kind of modified model sodium bicarbonate gathering and transporting device, including: a powder transfer device, described powder transfer device includes the coarse powder cyclone separator 1 that coarse powder particles is separated, described coarse powder cyclone separator connects coarse powder strength conveying worm 2 by pipeline, described coarse powder strength conveying worm 2 is connected with superfine mill 4 by oscillating feeder 3, and coarse granule is worn into micropowder by described superfine mill 3；Also including the fine powder cyclone separator being connected with the outfan of superfine mill 4, the micropowder up to standard worn into enters fine powder conveying worm；Isolated ultra-fine grain is delivered to and its warehouse being connected by pipeline by described fine powder conveying worm 4；The material particular diameter entering scratch system is 150um～200um, after wearing into coarse powder particles, enters coarse powder cyclone separator 1 and is easily separated in coal pulverizer, and the thick solid particle of sedimentation enters superfine mill 4 through coarse powder strength conveying worm 2 and oscillating feeder 3。
And gas and fine grained are further separated through coarse powder pulsed jet cloth filter 5, gas drains into air through coarse powder air-introduced machine 6, and fine grained enters superfine mill together with the isolated thick solid of upper level。Underproof material falls after rise to be refaced, and qualified material then enters fine powder cyclone separator 7 with air-flow, and dust falls, the discharge valve of bottom discharge。
Fraction fine dust then enters fine powder pulsed jet cloth filter 8 with air-flow, and sticks to filter bag surface。Pulse valve controls high pressure draught and sprays from filter bag internal moment, adhere to dust thereon and then shake suddenly whereabouts because of filter bag, the warehouse 10 of NaHCO3 fine powder delivered to by the material that the fine powder conveying worm 9 of bottom is then collected two places, and after scratch system pulverizing, material particular diameter becomes 30um～40um about 400 order。
The one powder metering device being connected with described warehouse, powder flow is carried out accurate measurement by described powder metering device, and the powder body after metering enters powder jetting device；
And a powder jetting device, described powder jetting device includes the pipeline distributor 15 being connected with powder metering device, powder body is divided into entrance ejector 16 after some stocks through pipeline distributor, described ejector is arranged on the wall of flue, also include one and be arranged at diffusion disturbed flow pipe 17 in the middle part of flue, high efficient mixed, purifying smoke is carried out with incoming flow flue gas after the powder body airflow passes diffusion disturbed flow pipe of ejector ejection。
Further, the upper end of coarse powder cyclone separator connects sack cleaner 5, the output pipe of described sack cleaner is provided with air-introduced machine, air-introduced machine provides kinetic energy, gas and ultra-fine grain are drained in air。
Warehouse discharge port will arrange manual isolation valve, inlet valve, material feeding pump, vacuum pressure relief valve。It is provided with gasification installation 11 and heater 12 at the bottom of storehouse, adds hot-air by gasification installation 11 to conveying in warehouse。The outlet of the warehouse 10 of NaHCO3 fine powder connects intermediate bin 13 and fine powder double helix measuring claims 14 accurately to control powder flow。
It addition, powder metering device includes being positioned at top speed governing feeding serew parts and being positioned at the constant speed metering screw parts of bottom；Described speed governing feeding serew parts include a feeding serew device 100, and nesting is arranged at the feeding serew driving device 200 in feeding serew device 100, and described feeding serew device side is also associated with charging aperture 110；Described constant speed metering screw parts include a metering screw device 300, and a nesting is arranged at the metering screw driving device 400 in metering screw device, and described metering screw device side is provided with discharging opening 310。Wherein speed governing feeding serew parts also include surrounding the metering reamer 500 being arranged in feeding serew device, and described metering reamer is provided with load sensor。Wherein above-mentioned parts are mounted on installing on pedestal 600。
Material is transported to the metering reamer connected below by charging aperture through conveying worm, it is installed on the load sensor above metering reamer the weight of material detected and produce the voltage signal feeding controller to be proportional to load of weighing, draws instantaneous delivery and cumulative weight value after computing together with default reamer speed。Instantaneous delivery is with specified rate through comparing, and deviation is output regulation signal after the digital regulated computing of PI, by the rotating speed of speed regulating control instrument control buncher, to reach the purpose of dosing。
With reference to Fig. 3, shown in Fig. 4 and Fig. 5, further, powder jetting device, including pipeline distributor, powder body is divided into entrance ejector after some stocks through pipeline distributor, described ejector is arranged on the wall of flue, also include one and be arranged at diffusion disturbed flow pipe in the middle part of flue, after the powder body airflow passes diffusion disturbed flow pipe of ejector ejection, carry out high efficient mixed, purifying smoke with incoming flow flue gas。Not having pipeline in diffusion disturbed flow pipe, flue gas arrangement of nozzles is on the wall of flue, and the nozzle of length length puts in diffusion disturbed flow pipe, in length short nozzle passage between diffusion disturbed flow pipe outer wall and flue wall。At the centrally disposed diffusion disturbed flow pipe of flue, front end air-flow is through diffusion disturbed flow pipe, a part flows through in diffusion disturbed flow pipe, a part flows through along diffusion disturbed flow pipe outer wall, the air velocity flow through in pipe that makes diffusion disturbed flow pipe reduces pressure and increases, and two strands of air-flows in diffusion disturbed flow pipe downstream different in flow rate blend。
And perforate on the inclined-plane of diffusion disturbed flow pipe, the aperture of described perforate and diffusion disturbed flow pipe length ratio d1/L1=0.01～0.1, the air-flow flow through from diffusion disturbed flow pipe outer wall can be blended by the air-flow flow through in aperture and diffusion disturbed flow pipe；Wherein the angle α of diffusion disturbed flow pipe inclined-plane and flue centrage is 2～10 degree, the ratio L of diffusion disturbed flow pipe length and wall spacing1/L2=7～18, the ratio L of diffusion disturbed flow pipe length and flue width1/L3=0.5～5。
And ejector includes first jet 700 and second nozzle 800, described first jet is arranged in the passage between diffusion disturbed flow pipe outside and flue, and the flue gas peripheral with flowing through diffusion disturbed flow pipe mixes；Described second nozzle stretches into the powder body of the internal ejection of diffusion disturbed flow pipe and mixes with diffusion disturbed flow pipe inside smoke。
Described first jet length L5 is longer than second nozzle L4, and wherein the aperture of second nozzle is d2, and described first jet, second nozzle are alternately arranged, described length ratio L4/L5=1～3, the draw ratio of pore is L4/d2=0.5～2；Between the nozzle being alternately arranged, spacing is equal, and described spacing and flue width ratio are L6/L3=0.1～3。
A kind of modified model sodium bicarbonate gathering and transporting device, comprises the following steps:
Step one: sodium bicarbonate makes the particle diameter coarse powder particles at 150um～200um through coal pulverizer, coarse powder particles is easily separated through coarse powder cyclone separator 1, isolated coarse granule enters coarse powder strength conveying worm 2, gas and ultra-fine grain and enters sack cleaner 5, drains in air through air-introduced machine 6。
Step 2: in step one, coarse granule is sent into superfine mill 4 through oscillating feeder 3 by conveying worm 2, wears into the micropowder of 30um～40um by coarse granule, enters fine powder cyclone separator 7；Being separated by fine powder, the material entrance fine powder conveying worm 9 that particle diameter is up to standard, fine powder not up to standard continues back at micropowder flour mill pulverizing；
Step 3: the material that in step 2, particle diameter is up to standard is delivered to fine powder pulsed jet cloth filter 8 through fine powder conveying worm 9 and is easily separated, and isolated ultra-fine grain is delivered to warehouse 10, and gas drains into air through pulse bag air-introduced machine；
Step 4: in step 3, the micropowder in warehouse enters double helix measuring through intermediate bin 13 and claims 14, and powder flow is carried out accurate measurement, and the powder body after metering enters next step spraying system；
Step 5: be introduced into pipeline distributor 15 through the powder body of metering in step 4 and powder body is divided into four strands, spray in flue through powder spray emitter 16, arranging disturbed flow pipe 17 in flue, powder body mixes more uniform under the effect of disturbed flow pipe with flue gas, reaches the purpose of purifying smoke。
The sodium hydrogen carbonate powder of sodium bicarbonate warehouse is delivered in duct sorbent injection internal system according to the powder amount continuously adjustabe needed for boiler desulfurization by induction system, and degree of regulation is+5%。
Injection apparatus includes pipeline distributor, its uniform distributor mainly including pulverized coal borne air flow 1 is divided into 4。Material is carbon steel lining wear-resistant ceramic, and service life was more than 1 year；Ejector, by the ejector in sodium bicarbonate powder high velocity jet to diffuser and flue。Ejector adopts wear resistant spray nozzle, effectively extends the service life of powder body nozzle；And diffusion disturbed flow pipe, it is mainly used in reduction of speed supercharging and the flow disturbance of air-flow, it is ensured that realize stablizing, burning completely within the scope of limited chamber length。
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described。Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model。This utility model claims scope and is defined by appending claims and equivalent thereof。
Claims (4)
1. a modified model sodium bicarbonate gathering and transporting device, it is characterised in that including:
One powder transfer device, described powder transfer device includes the coarse powder cyclone separator that coarse powder particles is separated, described coarse powder cyclone separator connects coarse powder strength conveying worm by pipeline, described coarse powder strength conveying worm is connected with superfine mill by oscillating feeder, and coarse granule is worn into micropowder by described superfine mill；
Also including the fine powder cyclone separator that the outfan with superfine mill is connected, the micropowder up to standard worn into enters fine powder conveying worm；Isolated ultra-fine grain is delivered to and its warehouse being connected by pipeline by described fine powder conveying worm；
The one powder metering device being connected with described warehouse, powder flow is carried out accurate measurement by described powder metering device, and the powder body after metering enters powder jetting device；
Described powder metering device includes being positioned at top speed governing feeding serew parts and being positioned at the constant speed metering screw parts of bottom；
Described speed governing feeding serew parts include a feeding serew device, and nesting is arranged at the feeding serew driving device in feeding serew device, and described feeding serew device side is also associated with charging aperture；Described constant speed metering screw parts include a metering screw device, and a nesting is arranged at the metering screw driving device in metering screw device, and described metering screw device side is provided with discharging opening。
2. a kind of modified model sodium bicarbonate gathering and transporting device according to claim 1, it is characterised in that described speed governing feeding serew parts also include surrounding the metering reamer being arranged in feeding serew device, and described metering reamer is provided with load sensor。
3. a kind of modified model sodium bicarbonate gathering and transporting device according to claim 1, it is characterised in that be provided with the gasification installation being sequentially connected with and heater at the bottom of the storehouse of described warehouse, add hot-air by gasification installation to conveying in warehouse。
4. a kind of modified model sodium bicarbonate gathering and transporting device according to claim 1, it is characterized in that, the upper end of described coarse powder cyclone separator connects sack cleaner, the output pipe of described sack cleaner is provided with air-introduced machine, thered is provided kinetic energy by air-introduced machine, gas and ultra-fine grain are drained in air。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620080882.1U CN205328232U (en) | 2016-01-27 | 2016-01-27 | Device is failed to improved generation sodium bicarbonate collection |
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| CN201620080882.1U CN205328232U (en) | 2016-01-27 | 2016-01-27 | Device is failed to improved generation sodium bicarbonate collection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469536A (en) * | 2017-09-05 | 2017-12-15 | 浙江省能源与核技术应用研究院 | Based on the expanding dust arrester of the separation of dust thickness and particle dust and method |
-
2016
- 2016-01-27 CN CN201620080882.1U patent/CN205328232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469536A (en) * | 2017-09-05 | 2017-12-15 | 浙江省能源与核技术应用研究院 | Based on the expanding dust arrester of the separation of dust thickness and particle dust and method |
| CN107469536B (en) * | 2017-09-05 | 2022-11-25 | 浙江省能源与核技术应用研究院 | Dust removal device and method based on dust thickness separation and fine particle dust diameter expansion |
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