CN104801137A - Wet electrostatic precipitator, desulfurization system as well as desulfurization and dust removal process - Google Patents
Wet electrostatic precipitator, desulfurization system as well as desulfurization and dust removal process Download PDFInfo
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- CN104801137A CN104801137A CN201510168990.4A CN201510168990A CN104801137A CN 104801137 A CN104801137 A CN 104801137A CN 201510168990 A CN201510168990 A CN 201510168990A CN 104801137 A CN104801137 A CN 104801137A
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- dust
- desulfurization
- dust removal
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Abstract
The invention discloses a wet electrostatic precipitator, a desulfurization system as well as a desulfurization and dust removal process. The desulfurization and dust removal process at least comprises the step of electrostatic precipitation in a transverse flow process of flue gas flow. The desulfurization system at least comprises one wet electrostatic precipitator. The wet electrostatic precipitator comprises a cylindrical dust removal box which is horizontally arranged and provided with an air inlet and an air outlet, air flow distribution plates are arranged in the dust removal box and close to the air inlet, a mist removal device is arranged in the dust removal box and close to the air outlet, and a dust removal device is arranged in the dust removal box and between the air flow distribution plates and the mist removal device. Electric conductors adopt tubular structures instead of the original sheet structures, the dust particle adsorbing areas of the electric conductors are increased in a use process, further, the intervals between rows of electric conduction tubes can distribute air flow very well, and air flow passes smoothly.
Description
Technical field
The present invention relates to a kind of Wet type electric dust-removing device, desulphurization system and desulfurization dust-removing technique.
Background technology
Mostly dust pelletizing system is in the market the dust arrester arranged in desulfurizing tower on vertical direction, and this system in use has some defects:
(1) a large amount of flushing water in existing deduster use procedure and the slurries of recovery, when falling into desulfurizing tower because spraying layer damages, the direct desulphurization reaction affected in desulfurizing tower, cause flue gas and reactive desulfurizing agent insufficient, flue gas can be escaped at destruction place simultaneously, causes desulfuration efficiency to reduce;
(2) in tower, deduster is in use, rinse the slurries fallen to impact bottom rinse-system, until bottom rinse-system lost efficacy, after bottom rinse-system lost efficacy, deduster meeting fouling and clogging, affect air-flow normal through, cause SR to increase, even impact is normal produces;
(3) in tower, deduster is after blocking or damage, and examine and replace is very inconvenient;
(4) if deduster breaks down in tower, except reduction desulfuration efficiency, the parts of damage fall into the normal operation of desulfurizing tower meeting influential system, can cause the damage of circulating pump and after-treatment system time serious;
(5) in tower in deduster installation process, material can only be passed in and out in manhole, install inconvenient, and danger close when installing;
(6) in tower deduster to be generally designed to two-stage even more, take up room comparatively large (accounting for 1/5 of desulfurizing tower tower body), can strengthen the steel consumption of desulphurization system.
(7) flue gas is when by existing deduster, because skewness can reduce dust removing effects.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of Wet type electric dust-removing device, desulphurization system and desulfurization dust-removing technique.
For achieving the above object, a kind of Wet type electric dust-removing device of the present invention, comprise one laterally place and there is the cartridge type dust-removing box of air inlet and air outlet, airflow-distribution board is provided with in described dust-removing box and near air inlet position, demister is provided with in described dust-removing box and near air outlet position, between described airflow-distribution board and described demister, dust arrester is provided with in described dust-removing box, wherein, described dust arrester comprises upper mounted plate and bottom plate, and the many rows vertical electric conduction pipe be evenly fixed between upper mounted plate and bottom plate, many corona wires are provided with between adjacent two row's vertical electric conduction pipes, each contact tube is all electrically connected with high voltage source with corona wire.
Preferably, fixed plate is provided with multiple dedusting water pipe for cleaning institute's attracting dust on contact tube and corona wire, and offers catch box in the lower end of dust-removing box.
Preferably, described airflow-distribution board comprises the primary air stream distribution grid and secondary air flow distribution grid that arrange from outside to inside.
Preferably, described demister is a drop adsorption plate.
For achieving the above object, a kind of desulphurization system of the present invention, at least comprises above-mentioned Wet type electric dust-removing device.
For achieving the above object, a kind of desulfurization dust-removing technique of the present invention, at least comprises the step that off-gas flows carries out electric precipitation process in lateral flow process.
Preferably, above-mentioned off-gas flows carries out dust removal process and is realized by above-mentioned Wet type electric dust-removing device in lateral flow process, and specific implementation step is:
The waste gas of discharge enters cartridge type dust-removing box from air inlet;
Off-gas flows enters dust arrester after shunting, is adsorbed on the surface of contact tube and corona wire by the electro ultrafiltration of contact tube and corona wire;
Off-gas flows after dedusting is discharged by gas outlet through demister.
Beneficial effect of the present invention is:
The present invention is in whole desulfurization dust-removing technique, off-gas flows is made to carry out electric precipitation process in lateral flow process, change the version of original tall and big desulfurizing tower discharging waste gas, lower position is adsorbed the dust granules in waste gas by the Wet type electric dust-removing device of horizontally set, to discharging waste gas, there is good cleaning effect.Because the position of dust-removing box is lower, its installing/dismounting and maintenance all convenient.The present invention installs dust arrester on lower position, avoids the construction of tall and big desulfurizing tower, provides cost savings to a certain extent and maintenance difficulty.
Used herein to electric conductor utilize tubular structure to replace original slice structure, in use the area of its absorption dust granules becomes large, and because shunting action can well be played to air-flow in the gap of often arranging between contact tube, keep air-flow to smoothly pass.
Accompanying drawing explanation
Fig. 1 is the structural representation of Wet type electric dust-removing device described in the embodiment of the present invention;
Fig. 2 is the top view of dust arrester described in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention will be further described.
A kind of desulphurization system for desulfurization industry described in the embodiment of the present invention, arranges the device that an external waste air carries out dedusting within the system, and this device adopts Wet type electric dust-removing device.The occupation mode of this Wet type electric dust-removing device is different from traditional dedusting method.This Wet type electric dust-removing device needs laterally to be placed in whole desulphurization system, to replace traditional vertical desulfurizing tower design.As depicted in figs. 1 and 2, described Wet type electric dust-removing device comprises one and laterally places and have the cartridge type dust-removing box 1 of air inlet 2 and air outlet 3, the air inlet of this dust-removing box is connected to the Waste gas outlet in desulphurization system, and the air outlet of this dust-removing box is connected on blowdown stack.In described dust-removing box and near air inlet position, be provided with airflow-distribution board, described airflow-distribution board comprises the primary air stream distribution grid 4 and secondary air flow distribution grid 5 that arrange from outside to inside, to reach the Uniform Flow of waste gas in casing.In described dust-removing box and near air outlet position, be provided with demister, described demister is a drop adsorption plate 6, for gas after adsorbing dedusting be with moisture.Between described airflow-distribution board and described demister, dust arrester is provided with in described dust-removing box, wherein, described dust arrester comprises upper mounted plate 7 and bottom plate 8, and the many rows vertical electric conduction pipe 9 be evenly fixed between upper mounted plate and bottom plate, between adjacent two row's vertical electric conduction pipes, be provided with many corona wires 10; Each contact tube is all electrically connected with high voltage source with corona wire.Fixed plate is provided with multiple dedusting water pipe for cleaning institute's attracting dust on contact tube and corona wire, for cleaning the dust be adsorbed on contact tube and corona wire.Catch box is offered, the sewage after recovery and rinsing in the lower end of dust-removing box.
Dedusting operation principle of the present invention for: the waste gas that desulphurization system produces enters in dust-removing box, airflow-distribution board through two-stage makes uniform stream enter in dust arrester, contact tube in dust arrester and the function of current of corona wire, make the dust granules in air-flow be adsorbed on contact tube and corona wire.The dust invested on contact tube and corona wire caused after dedusting, can carry out hydro-peening operation in the later stage by dedusting water pipe and remove, the sewage after cleaning enters catch box.In addition, can with steam in waste gas, therefore, utilize demister can absorb moisture in waste gas, finally enter into equally in catch box.
A kind of desulfurization dust-removing technique of the present invention, at least comprises the step that off-gas flows carries out electric precipitation process in lateral flow process.Above-mentioned off-gas flows carries out dust removal process and is realized by above-mentioned Wet type electric dust-removing device in lateral flow process, and specific implementation step is: the waste gas of discharge enters cartridge type dust-removing box from air inlet; Off-gas flows enters dust arrester after shunting, is adsorbed on the surface of contact tube and corona wire by the electro ultrafiltration of contact tube and corona wire; Off-gas flows after dedusting is discharged by gas outlet through demister.
Beneficial effect of the present invention is: the present invention is in whole desulfurization dust-removing technique, off-gas flows is made to carry out electric precipitation process in lateral flow process, change the version of original tall and big desulfurizing tower discharging waste gas, lower position is adsorbed the dust granules in waste gas by the Wet type electric dust-removing device of horizontally set, to discharging waste gas, there is good cleaning effect.Because the position of dust-removing box is lower, its installing/dismounting and maintenance all convenient.The present invention installs dust arrester on lower position, avoids the construction of tall and big desulfurizing tower, provides cost savings to a certain extent and maintenance difficulty.
Used herein to electric conductor utilize tubular structure to replace original slice structure, in use the area of its absorption dust granules becomes large, and because shunting action can well be played to air-flow in the gap of often arranging between contact tube, keep air-flow to smoothly pass.
Above; be only preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should define with claim is as the criterion.
Claims (7)
1. a Wet type electric dust-removing device, it is characterized in that, comprise one laterally place and there is the cartridge type dust-removing box of air inlet and air outlet, airflow-distribution board is provided with in described dust-removing box and near air inlet position, demister is provided with in described dust-removing box and near air outlet position, between described airflow-distribution board and described demister, dust arrester is provided with in described dust-removing box, wherein, described dust arrester comprises upper mounted plate and bottom plate, and the many rows vertical electric conduction pipe be evenly fixed between upper mounted plate and bottom plate, many corona wires are provided with between adjacent two row's vertical electric conduction pipes, each contact tube is all electrically connected with high voltage source with corona wire.
2. Wet type electric dust-removing device according to claim 1, is characterized in that, fixed plate is provided with multiple dedusting water pipe for cleaning institute's attracting dust on contact tube and corona wire, and offers catch box in the lower end of dust-removing box.
3. Wet type electric dust-removing device according to claim 1, is characterized in that, described airflow-distribution board comprises the primary air stream distribution grid and secondary air flow distribution grid that arrange from outside to inside.
4. Wet type electric dust-removing device according to claim 1, is characterized in that, described demister is a drop adsorption plate.
5. a desulphurization system, is characterized in that, at least comprises the Wet type electric dust-removing device described in arbitrary claim in the claims 1-4.
6. a desulfurization dust-removing technique, is characterized in that, at least comprises the step that off-gas flows carries out electric precipitation process in lateral flow process.
7. desulfurization dust-removing technique according to claim 6, is characterized in that, above-mentioned off-gas flows carry out in lateral flow process dust removal process by the claims 1-4 in Wet type electric dust-removing device described in arbitrary claim realize, specific implementation step is:
The waste gas of discharge enters cartridge type dust-removing box from air inlet;
Off-gas flows enters dust arrester after shunting, is adsorbed on the surface of contact tube and corona wire by the electro ultrafiltration of contact tube and corona wire;
Off-gas flows after dedusting is discharged by gas outlet through demister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168990.4A CN104801137A (en) | 2015-04-13 | 2015-04-13 | Wet electrostatic precipitator, desulfurization system as well as desulfurization and dust removal process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510168990.4A CN104801137A (en) | 2015-04-13 | 2015-04-13 | Wet electrostatic precipitator, desulfurization system as well as desulfurization and dust removal process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774178A (en) * | 2020-05-29 | 2020-10-16 | 广东南粤节能环保有限公司 | High-pressure wet-type demisting dust remover |
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| CN201684661U (en) * | 2010-06-08 | 2010-12-29 | 南京林业大学 | Artificial board industry wet electrostatic dust collector |
| CN202823635U (en) * | 2012-09-25 | 2013-03-27 | 福建龙净环保股份有限公司 | Washing device for wet electric precipitator |
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| CN203437208U (en) * | 2013-08-23 | 2014-02-19 | 西安西热锅炉环保工程有限公司 | Wet-type electrostatic dust and mist remover |
| EP2868384A1 (en) * | 2012-06-29 | 2015-05-06 | Mitsubishi Heavy Industries Mechatronics Systems, Ltd. | Wet electric dust-collecting device and exhaust gas treatment method |
| CN204911213U (en) * | 2015-04-13 | 2015-12-30 | 孙璞 | Wet -type electricity dust collector and desulfurization system |
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2015
- 2015-04-13 CN CN201510168990.4A patent/CN104801137A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201684661U (en) * | 2010-06-08 | 2010-12-29 | 南京林业大学 | Artificial board industry wet electrostatic dust collector |
| EP2868384A1 (en) * | 2012-06-29 | 2015-05-06 | Mitsubishi Heavy Industries Mechatronics Systems, Ltd. | Wet electric dust-collecting device and exhaust gas treatment method |
| CN202823635U (en) * | 2012-09-25 | 2013-03-27 | 福建龙净环保股份有限公司 | Washing device for wet electric precipitator |
| CN103055644A (en) * | 2012-12-31 | 2013-04-24 | 福建龙净环保股份有限公司 | Wet-type electric dust removal system after wet desulphurization |
| CN203002163U (en) * | 2012-12-31 | 2013-06-19 | 福建龙净环保股份有限公司 | Wet-process desulphurization wet type electrostatic precipitation system |
| CN203437208U (en) * | 2013-08-23 | 2014-02-19 | 西安西热锅炉环保工程有限公司 | Wet-type electrostatic dust and mist remover |
| CN204911213U (en) * | 2015-04-13 | 2015-12-30 | 孙璞 | Wet -type electricity dust collector and desulfurization system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774178A (en) * | 2020-05-29 | 2020-10-16 | 广东南粤节能环保有限公司 | High-pressure wet-type demisting dust remover |
| CN111774178B (en) * | 2020-05-29 | 2022-04-29 | 广东南粤节能环保有限公司 | High-pressure wet-type demisting dust remover |
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Application publication date: 20150729 |