CN103041663A - Anti-blocking device of stepping demister - Google Patents
Anti-blocking device of stepping demister Download PDFInfo
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- CN103041663A CN103041663A CN2012104959761A CN201210495976A CN103041663A CN 103041663 A CN103041663 A CN 103041663A CN 2012104959761 A CN2012104959761 A CN 2012104959761A CN 201210495976 A CN201210495976 A CN 201210495976A CN 103041663 A CN103041663 A CN 103041663A
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- guide rail
- demister
- lead rail
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- rotary shaft
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Abstract
The invention discloses an anti-blocking device of a stepping demister. The anti-blocking device of the stepping demister comprises a controller, a rotary shaft motor, a rotary shaft, a radial locating lead rail, an electric ultrasonic generator, high-pressure wash water and a circumferential locating lead rail, wherein the controller is electrically connected with the electric ultrasonic generator; the radial locating lead rail is arranged inside the circumferential locating lead rail; the radial locating lead rail is movably connected with the circumferential locating lead rail; and the rotary shaft motor is connected with the rotary shaft. The anti-blocking device can effectively remove soft and hard dirt, has important economic and environmental significances in improving of reliability of a wet desulphurization device, reducing of energy consumption of wet desulphurization and reducing of desulphurization costs, thoroughly avoids the jamming condition of a demisting system, improves the demisting efficiency, and also can optimize the size of a spray tower, reduce the operating time and the work pressure of a wash water system, reduce the energy consumption of the wash water, reduce the construction cost, the operating cost and the operation and maintenance costs of the spray tower, thus fulfilling the purposes of optimization of the desulphurization system as well as energy conservation and emission reduction.
Description
Technical field
The present invention relates to a kind of step-by-step movement demister anti-block apparatus.
Background technology
Along with the development of society, the demand of fuel increases day by day, and the SO2 that is discharged in the atmosphere is also more and more, so that air environmental pollution constantly aggravates, has brought great destruction for human environment and World Economics.Along with the development of society, human environmental protection is paid attention to further, more and more higher to the environmental requirement of the heavy industry facilities such as thermal power plant, the development of society so that lower sulphur emissions standard in succession put into effect.Wet Limestone-gypsum wet flue gas desulfurizing technology is a kind of high-efficiency desulfurization technology, is adopted by many large coal-fired power plants.
Demister system is requisite important system in the wet desulphurization device.This system generally is comprised of demister body and high pressure washing water system.After the slurries washing of flue gas through the atomizing of spray district, flue gas continues upwards to flow, and in order to reduce the mist amount that contains in the flue gas, prevents fouling and the corrosion of upstream device, need to arrange that demister is to remove oarse-grained droplet in the flue gas in the outlet on absorption tower; And require the high-pressure washing water system cycle that demister is washed, and with drop and the dust that rinses out demister, prevent demister fouling obstruction, guarantee that the demister cleaning surfaces can work, and also can keep the water balance of desulphurization system simultaneously.
But the demister system long-time running scale problems in various degree occurs easily in " wet-as to do " district of flue gas.The high pressure washing water system adopts pressure to be higher than the water under high pressure of 0.2MPa, directly demister system is washed by mechanical shower nozzle., general soft dirt needs high pressure water washing continuous flushing and operation gap periods less than 30min, can effectively remove soft dirt.Cause thus the high pressure washing water consumption large, the cycle of operation is long, and mechanical shower nozzle damages easily.In addition owing to exist flushing dead band, valve wear and leakage and hydraulic pressure not enough, cause fouling in time not to be eliminated and form hard scale.Hard scale causes again the demister circulation area to reduce, and flue gas flow rate is accelerated, and has further accelerated the generation of hard scale, forms vicious circle; And if shorten the cycle of operation, then can further cause high system operation energy consumption and high water the consumption.
The operation practice shows that all there is scale formation in various degree in the wet desulphurization device demister system, when its fouling is serious, can cause equipment to stop up even local collapse, directly can cause desulfurizing tower system flow resistance to strengthen, and increases voltage loss; The interior Liquid Flow circulation of tower is interfered, destroys water balance in the tower, wet desulfurization system energy consumption and the increase of water consumption cause desulfuration efficiency to descend; The most serious situation then can cause desulphurization system to be stopped transport, and the desulphurization amount is exceeded standard, and whole unit must be shut down desulfurizer is safeguarded, causes serious environmental pollution and economic loss.
Summary of the invention
Main purpose of the present invention is to provide a kind of demist efficient high, energy-saving and emission-reduction, the step-by-step movement demister anti-block apparatus that cost is low.
For addressing the above problem, the present invention adopts following technical scheme: a kind of step-by-step movement demister anti-block apparatus, comprise controller, shaft rotating motor, rotating shaft, radial location guide rail, electrodynamic type supersonic generator, high-pressure washing water and circumferential positioning guide rail, described controller and electrodynamic type supersonic generator are electrically connected, the radial location guide rail is arranged in the circumferential positioning guide rail, radial location guide rail and circumferentially positioning guide rail flexible connection, shaft rotating motor is connected with rotating shaft.
Further, be equipped with signal line on described rotating shaft and the radial location guide rail.
Further, described electrodynamic type supersonic generator designs on the radial location guide rail and is flexibly connected.
The beneficial effect of step-by-step movement demister anti-block apparatus of the present invention is: can improve the problem except fog-zone fouling obstruction and local collapse, effectively remove soft, hard scale, to improving the reliability of wet desulphurization device, reduce the wet desulphurization energy consumption, reducing the desulfurization operation cost has great economy and environment protection significance.It thoroughly solves the blockage of demister system, improve demist efficient, simultaneously can also optimize the spray column size, reduce flushing water system operation time and operating pressure, reduce the flushing water energy consumption, reduce construction cost, operating cost, the Operation and Maintenance cost of spray column, reach the optimization desulphurization system, the purpose of energy-saving and emission-reduction.
Description of drawings
Fig. 1 is the top view of step-by-step movement demister anti-block apparatus of the present invention;
Fig. 2 is the front view of step-by-step movement demister anti-block apparatus of the present invention.
The specific embodiment
See also illustrated in figures 1 and 2, a kind of step-by-step movement demister anti-block apparatus of the present invention, comprise controller 1, shaft rotating motor 2, rotating shaft 3, radial location guide rail 4, electrodynamic type supersonic generator 5, high-pressure washing water 6 and circumferential positioning guide rail 7, described controller 1 is electrically connected with electrodynamic type supersonic generator 5, radial location guide rail 4 is arranged in the circumferential positioning guide rail 7, radial location guide rail 4 and circumferentially positioning guide rail 7 flexible connections, shaft rotating motor 2 is connected with rotating shaft 3.This step-by-step movement demister anti-block apparatus adopts the automatically anti-blocking design in location, designs in advance anti-blocking finder according to desulfurizing tower 8 interior demister structures, and the input stepped parameter is to controller 1 implement device positioning control.Electrodynamic type supersonic generator 5 carries out the two dimensional surface circle coordinates according to the path of demister structure at circumferentially positioning guide rail 7 and radial location guide rail 4 advances, and remove the work of blocking up by setting cycle.Ultrasonic wave acts on except the fog-zone block part in modes such as direct projection, infiltration, reflection and diffraction, in conjunction with high-pressure washing water, under hyperacoustic mechanical oscillation effect and cavitation, make the foulant of piling up obstruction produce tired and loose coming off, the crystallization screenings that comes off is rinsed water and takes away, and realizes removing the fog-zone without the dead band high efficient anti-blocking.Result of the test shows, uses this step-by-step movement demister anti-block apparatus, can improve except the fog-zone blockage problem, guarantees the safe and reliable operation of demister, thereby improves demist efficient, reduces flushing water running time, reduces water consumption energy consumption and Operation and Maintenance cost.
Be equipped with signal line on described rotating shaft 3 and the radial location guide rail 4.Described electrodynamic type supersonic generator 5 designs on radial location guide rail 4 and is flexibly connected.
Anti-blocking automatic control system is controller 1, power is provided by shaft rotating motor 2, signal line is laid on rotating shaft 3 and the radial location guide rail 4, and radial location guide rail 4 is flexibly connected at radial location guide rail 4 with circumferentially positioning guide rail 7 flexible connections, electrodynamic type supersonic generator 5 designs.Send stepped parameter from controller 1, control shaft rotating motor 2 rotates rotating shaft 3, make radial location guide rail 4 march to assigned address at circumferential positioning guide rail 7, send simultaneously instruction and make electrodynamic type supersonic generator 5 in radial location guide rail 4 location of advancing, control electrodynamic type supersonic generator 5 is adjusted intensity of acoustic wave by signal of telecommunication instruction and is sent ultrasonic wave and remove the work of blocking up except the fog-zone blocking position in conjunction with high-pressure washing water 6.
Device adopts two guide rails location, adopts simultaneously circumferential positioning guide rail 7 and 4 designs of radial location guide rail.Controller 1 sends stepped parameter control shaft rotating motor 2 and realizes locating along circumferentially rotating by rotating shaft 3 rotation radial location guide rails 4 (also can be the radius formula), control simultaneously electrodynamic type supersonic generator 5 and realize radial location in the radial guidance motion, thereby realize that anti-block apparatus in the comprehensive location that circumferentially reaches except the fog-zone radially, reaches without the dead band except stifled purpose.This device adopts controller to realize location, cycle of operation adjustment, and controller 1 can according to different demisters and stopping state, be set positional parameter and work period.Controller 1 can be positioned to electrodynamic type supersonic generator 5 (generally being directly over the demister blade) directly over the fouling block part; Press a cycle of operation startup of 4h～8h (adjustable settings), and be coupled for 6 running times with high-pressure washing water.The device bridge breaker is made of electrodynamic type supersonic generator 5 and high-pressure washing water 6 systems, two electrodynamic type supersonic generators 5 are separately positioned on 4 two half journal axles of radial location guide rail, after positioning, according to controller 1 instruction works, produce the ultrasonic wave of high frequency high intensity acoustic pressure, in conjunction with the high pressure washing effect of high-pressure washing water 6, make the screenings that pile up to stop up except the fog-zone produce tired and loose come off and be rinsed the water flushing take away.The control system of device and power set adopt the external design arrangement; controller 1 and shaft rotating motor 2 are arranged in the desulfurizing tower cat head; can prevent slurries to the corrosion of equipment, and can keep in the non-stop-machine situation of desulphurization system, this device is safeguarded and certainly/manually control switching.
The dirty sample of spray column demister is to belong to " wet one does " fouling in the wet method fume desulfurizing system.Owing to contain CaSO in the slurries
4, CaSO
3, CaCO
3And contain the materials such as silicon, iron, aluminium in the flying dust, and these materials have larger viscosity, and when slurries collided the demister blade, the part in them just can adhere to the tower wall and settle down the soft dirt of formation.And because the desulfurizing tower tail flue gas has higher temperature (about 80C °), accelerate the evaporation of sedimentary deposit moisture, the long-time running meeting of system makes sedimentary deposit form gradually compact structure, is similar to the hard scale of cement.
Scale removal principle of the present invention is to utilize ultrasonic wave in conjunction with soft, hard scale in the high pressure water washing effect removing demister.This device and high-pressure washing water system coordination operation (the device cycle of operation and the coupling of high-pressure washing water system cycle), the supersonic generator in the device sends vibration frequency up to the ultrasonic wave of 20000Hz～40000Hz.Diffracting power is strong because this ultrasonic wave has, air and wall absorb the characteristics such as little and effective cleaning area is large to its, in conjunction with water under high pressure, ultrasonic wave produces cavitation and mechanical oscillation effect to dirt, soft, the hard scale that make demist stop up zone accumulation obstruction produce tired and loose coming off, be rinsed simultaneously the water flushing and take away, reach the anti-blocking purpose of efficient scale removal.
This step-by-step movement demister anti-block apparatus is the anti-blocking design in location of automatically advancing.This device as core, adopts positioning guide rail to transport the supersonic generator location of advancing with controller and electrodynamic type supersonic generator.According to the ruuning situation of desulfurizing tower with except the fog-zone stopping state, carry out anti-blocking route and work period optimal design.Controller sends instruction according to the Optimum Path sequence of threads, and the control rotating shaft rotates the radial location guide rail, realizes circumferentially location; Control simultaneously the electrodynamic type supersonic generator and march to the assigned work zone at the radial location guide rail, realize radial location.Supersonic generator sends the high frequency high intensity ultrasonic wave in conjunction with the high-pressure washing water effect, realizes the anti-blocking purpose of scale removal.Controller is arranged in outside the desulfurizing tower cat head, can realize the automatic/hand control mode switch, and can shut down maintenance at any time.
Compared with prior art, the invention has the beneficial effects as follows:
1. the compound action of ultrasonic wave and high-pressure washing water can produce the cavitation effect, realizes efficient scale removal.The electrodynamic type supersonic generator produces the ultrasonic wave of high frequency high intensity acoustic pressure, in conjunction with high-pressure washing water, little gas nuclear cavitation bubble of liquid and dirt is vibrated under the effect of sound wave.Compressed until collapse in a flash, can produce huge instantaneous pressure when bubble, make the dirt that pile up to stop up except the fog-zone produce tired and loose coming off, and be rinsed the water flushing and take away, realize high efficient anti-blocking.
2. device adopts the two-way guide rails location, can realize without the dead band except stifled work.Controller sends stepped parameter control shaft rotating motor and rotates radial location guide rail (also can be the radius formula) by rotating shaft, realizes circumferentially location, controls simultaneously the electrodynamic type supersonic generator and advances at the radial location guide rail, realizes radial location.Under two-way positioning action, realize without the dead band except stifled work.
3. this device has the advantages that to save water and energy.Adopt the electrodynamic type supersonic generator, have the advantage of low-power operation.Use device makes high-pressure washing water be very easy to wash away incrustation to cavitation and the higher-order of oscillation effect of dirt.Can the prolongation system move gap periods to 2～4h, greatly reduce water consumption and the energy consumption of system.
4. device has easily characteristics of repair and maintenance; because control system and the power set of device are arranged in outside the desulfurizing tower cat head; can prevent slurries to the corrosion of equipment, and can keep in the non-stop-machine situation of desulphurization system, this device is safeguarded renewal optimization with control program.
In sum, the technology of the present invention means are simple and easy to do, and have that anti-blocking efficient is high, water saving and the actively useful technique effect such as energy-conservation.
The above be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, and any variation or replacement of expecting without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. step-by-step movement demister anti-block apparatus, it is characterized in that: comprise controller, shaft rotating motor, rotating shaft, radial location guide rail, electrodynamic type supersonic generator, high-pressure washing water and circumferential positioning guide rail, described controller and electrodynamic type supersonic generator are electrically connected, the radial location guide rail is arranged in the circumferential positioning guide rail, radial location guide rail and circumferentially positioning guide rail flexible connection, shaft rotating motor is connected with rotating shaft.
2. step-by-step movement demister anti-block apparatus according to claim 1 is characterized in that: be equipped with signal line on described rotating shaft and the radial location guide rail.
3. step-by-step movement demister anti-block apparatus according to claim 1 is characterized in that: described electrodynamic type supersonic generator design is on the radial location guide rail and be flexibly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104959761A CN103041663A (en) | 2012-11-29 | 2012-11-29 | Anti-blocking device of stepping demister |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104959761A CN103041663A (en) | 2012-11-29 | 2012-11-29 | Anti-blocking device of stepping demister |
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| CN103041663A true CN103041663A (en) | 2013-04-17 |
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| CN2012104959761A Pending CN103041663A (en) | 2012-11-29 | 2012-11-29 | Anti-blocking device of stepping demister |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104623983A (en) * | 2015-02-10 | 2015-05-20 | 武汉工程大学 | Tower type reactor internally provided with vibrating demister |
| CN104818362A (en) * | 2015-03-30 | 2015-08-05 | 魏占江 | Descaling method of converter wet deduster |
| CN105833647A (en) * | 2016-05-10 | 2016-08-10 | 武汉工程大学 | Tower type demister |
| CN111790226A (en) * | 2020-07-14 | 2020-10-20 | 陈芳 | Wet dust collector for food processing workshop |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101524607A (en) * | 2009-04-23 | 2009-09-09 | 北京东方康明科技开发有限公司 | Multifunctional ceramic filterer ultrasonic washing system |
| CN102423597A (en) * | 2011-10-14 | 2012-04-25 | 华南理工大学 | Intelligent anti-blocking demister used for wet flue gas desulfurization |
| CN203017937U (en) * | 2012-11-29 | 2013-06-26 | 广东依科电力技术有限公司 | Anti-blocking device of stepping type defogger |
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2012
- 2012-11-29 CN CN2012104959761A patent/CN103041663A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524607A (en) * | 2009-04-23 | 2009-09-09 | 北京东方康明科技开发有限公司 | Multifunctional ceramic filterer ultrasonic washing system |
| CN102423597A (en) * | 2011-10-14 | 2012-04-25 | 华南理工大学 | Intelligent anti-blocking demister used for wet flue gas desulfurization |
| CN203017937U (en) * | 2012-11-29 | 2013-06-26 | 广东依科电力技术有限公司 | Anti-blocking device of stepping type defogger |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104623983A (en) * | 2015-02-10 | 2015-05-20 | 武汉工程大学 | Tower type reactor internally provided with vibrating demister |
| CN104623983B (en) * | 2015-02-10 | 2016-11-23 | 武汉工程大学 | The tower reactor of oscillating mode demister it is provided with in a kind of |
| CN104818362A (en) * | 2015-03-30 | 2015-08-05 | 魏占江 | Descaling method of converter wet deduster |
| CN105833647A (en) * | 2016-05-10 | 2016-08-10 | 武汉工程大学 | Tower type demister |
| CN111790226A (en) * | 2020-07-14 | 2020-10-20 | 陈芳 | Wet dust collector for food processing workshop |
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Application publication date: 20130417 |