CN210058620U

CN210058620U - Static deashing electrostatic precipitator equipment of multilayer mushroom form ionization

Info

Publication number: CN210058620U
Application number: CN201920510932.9U
Authority: CN
Inventors: 郝飞虎; 李剑秋
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-02-14
Anticipated expiration: 2029-04-16

Abstract

The utility model belongs to the technical field of the environmental protection dust removal technique and specifically relates to a static deashing electrostatic precipitator of multilayer mushroom form ionization. Most of the conventional electric dust removal products are flat horizontal electric dust removers, and the products have poor capability of capturing fine dust particles and have the defect of secondary dust raising. The technical scheme of the utility model comprises a control system and a plurality of groups of dust removing units arranged in parallel, wherein the dust removing units comprise a dust removing chamber, an ionization dust deposition unit assembled in the dust removing chamber, an ash bucket connected with the dust removing chamber and a rapping mechanism for the ash removal of the ionization dust deposition unit; the equipment arranges a plurality of ionized layers in the anode dust collecting pipe of the ionization dust collecting unit through the discharge needle group, so that dust-containing gas is fully contacted with the anode, and the on-off and static power failure rapping of each group of dust collecting units are controlled by the control system, so that dust in the anode dust collecting pipe is collected into the dust hopper. The utility model discloses the deashing ability is strong, has eliminated the secondary raise dust that current product deashing in-process produced.

Description

Static deashing electrostatic precipitator equipment of multilayer mushroom form ionization

Technical Field

The utility model belongs to the technical field of the environmental protection dust removal technique and specifically relates to a static deashing electrostatic precipitator of multilayer mushroom form ionization.

Background

Most of electric dust removal products commonly used in the current market are conventional plate horizontal type electric dust removers. Because the electric dust remover has poor capability of capturing fine dust particles and has the defect of secondary dust raising, particularly in the ash removal process, the fine dust particles easily escape along with discharged airflow, so that the dust removal capability is low, if the conventional dust remover is used for carrying out the year at most 50mg/m, the dust removal effect is lower than the national emission standard (the national emission standard is less than 30 mg/m).

Disclosure of Invention

The utility model aims at providing a static deashing electrostatic precipitator of multilayer mushroom form ionization adopts multilayer ionization, off-line (static) deashing, has a power failure to shake technologies such as shake, eliminates the secondary raise dust that the deashing in-process produced, and the deashing ability is strong, and dust removal effect discharges and is less than national emission standard.

The technical scheme of the utility model is that: comprises a high-voltage power supply and a control system; the dust removal device also comprises a plurality of groups of dust removal units arranged in parallel; the dust removal unit comprises a dust removal chamber, an ash bucket, an ionization dust deposition unit and a rapping mechanism;

the ionization dust deposition unit is assembled in the dust removing chamber and comprises a dust collecting electrode and a corona electrode; the dust collecting electrode is a cylindrical anode dust collecting tube, and the anode dust collecting tubes are vertically assembled in parallel in the dust removing chamber through tube plates; the corona electrode is arranged along the axis of the anode dust collecting tube and consists of a cathode rod and a plurality of layers of discharge needle groups arranged on the cathode rod, each layer of discharge needle group is fixed on a cathode rod body by a plurality of metal needles in a radial shape around the central line, and the cathode rod body is hung on a corona electrode support at the upper end of the dust removing chamber;

the rapping mechanism comprises a corona electrode rapping mechanism assembled on the corona electrode bracket and a dust collecting electrode rapping mechanism assembled on the dust removal chamber shell;

an exhaust port is arranged at the upper end or the top of the shell of the dust chamber, and an air inlet is formed in the lower section of the shell of the dust chamber; the bottom of the dust removing chamber is connected with an ash bucket;

the air inlet of each group of dust removal unit dust removal chamber is communicated with the air inlet channel; the exhaust port of each group of dust removal unit dust removal chamber is communicated with the exhaust channel, and the exhaust valve is arranged on the exhaust port.

Further, a group of inlet airflow distribution plates are arranged in the dust removing chamber below the ionized dust deposition unit.

Further, the interior of the hopper is equipped with spoilers for preventing gas bouncing.

Furthermore, the corona electrode rapping mechanism is structurally a rotary hammer.

Furthermore, the dust collecting electrode rapping mechanism is structurally a rotary hammer.

Furthermore, the control system comprises a lifting cylinder and a controller, and the control system is assembled at the upper part of the dust removal chamber and connected with and controls the exhaust valves of the dust removal chambers of the dust removal units.

Furthermore, the high-voltage power supply is assembled at the upper part of the dust removal chamber and is connected with a corona electrode of the ionization dust deposition unit.

The utility model has the advantages that: the device adopts a multi-channel ionized layer dust accumulation and static vibration mode, effectively solves the problem of secondary dust raising, can be widely used for waste gas dust removal of thermal power generation, steel, nonferrous metallurgy, chemical industry, papermaking, cement and various industrial kilns, and replaces the conventional electric dust remover, cloth bag dust remover and other equipment. The device utilizes the cylindrical anode dust collecting pipe to form an airflow channel in a dust removing chamber, and a plurality of layers of disc-type discharge needle groups are arranged in the channel (the anode dust collecting pipe) along the airflow direction, and the layers are subjected to mushroom-shaped ionization discharge, a plurality of mushroom-shaped ionized layers are formed in the anode dust collecting pipe, mushroom-shaped airflow vortexes are formed, so that dust-containing gas is fully contacted with an anode, the opportunity that dust is captured and accumulated is greatly increased, and dust with fine particle diameters is separated from smoke and adsorbed on the inner wall of the anode dust collecting pipe; then, the dust adsorbed on the inner wall of the anode dust collecting pipe falls into an ash bucket by using a static rapping mode. In addition, the airflow vortex can stir dust-containing gas at the center of the dust collection pipe close to the cathode rod to be integrated into the whole airflow, so that fine dust is prevented from escaping from the center of the anode dust collection pipe.

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a diagram illustrating the operation state of the ionization dust deposition unit of the present invention;

FIG. 4 is a cross-sectional view of the ionization dust deposition unit of the present invention;

fig. 5 is a schematic view of the working state and the airflow guiding of the present invention.

Detailed Description

In the figure: 1. the dust collector comprises an ash bucket, 2, spoilers, 3, an air inlet, 4, an inlet airflow distribution plate, 5, an anode dust collection pipe, 6, a corona electrode, 6a, a cathode rod, 6b, a discharge needle group, 7, a dust removal chamber, 8, a corona electrode support, 9, an air outlet, 10, a lifting cylinder, 11, a dust collection electrode rapping mechanism, 12, a corona electrode rapping mechanism, 13, an exhaust channel, 14, a support, 15 and a high-voltage power supply.

Examples

As can be seen from fig. 1 to 5, the technical solution of the present invention includes a high voltage power supply 15, a control system, and a plurality of sets of dust removing units arranged in parallel; the dust removal unit comprises a dust removal chamber, an ash bucket 1, an ionization dust deposition unit and a rapping mechanism.

The dust removing chamber 7 is fixed on the support 14, and the ionization dust accumulation unit is assembled in the dust removing chamber 7 and comprises a dust collecting electrode and a corona electrode 6; the dust collecting electrode is a cylindrical anode dust collecting tube 5, the anode dust collecting tubes 5 are vertically arranged in parallel, the upper end of each anode dust collecting tube is connected with a tube plate, and the anode dust collecting tubes are assembled in a dust removing chamber 7 through the tube plates (porous support plates) to form a plurality of airflow channels; corona 6 is along the axis setting of positive pole pipe 5 that gathers dust, and corona is extremely by negative pole 6a and set up the multilayer discharge needle group 6b on the negative pole and constitute, and every layer of discharge needle group 6b is fixed on the body of rod of negative pole 6a by many metal needles are radial around the central line, and the body of rod of negative pole 6a hangs on corona support 8 of clean room 7 upper end, and negative pole 6a is located the positive pole and gathers dust 5 axes and lay multilayer discharge mechanism along the air current direction in the body.

The high voltage power supply 15 of this embodiment is mounted on the upper part of the dust chamber 7 and is connected to the corona electrode (cathode rod) of the ionization dust-deposition unit.

The rapping mechanism comprises a corona electrode rapping mechanism 12 and a dust collecting electrode rapping mechanism 11, wherein the corona electrode rapping mechanism 12 and the dust collecting electrode rapping mechanism 11 both adopt conventional rotary hammer rapping mechanisms, and the rotary hammer rapping mechanisms can be connected with a control system and control the rotary hammers to work through the control system; the dust collecting electrode rapping mechanism 11 is assembled on the shell of the dust removing chamber 7, the lower section of the tube body of the anode dust collecting tube 5 is rapped, and the corona electrode rapping mechanism 12 is assembled on the corona electrode bracket 8 and raps the bracket.

An exhaust port 9 is arranged at the upper end or the top of the shell of the dust chamber 7, and an exhaust valve is arranged on the exhaust port 9; the lower section of the shell of the dust chamber 7 is provided with an air inlet 3; the bottom of the dust chamber 7 is connected with the ash bucket 1;

the air inlet 3 of each group of dust removal unit dust removal chamber is communicated with the air inlet channel; the exhaust port 9 of each group of dust removing unit dust removing chambers is communicated with an exhaust channel 13; the exhaust valves of the dust removal chambers of the dust removal units are respectively connected with the control system, the control system controls the opening and closing of the exhaust ports, and the single dust removal unit is cut off to realize switching among the dust removal units.

Preferably, the control system is arranged at the upper part of the dust chamber 7, the control system comprises a controller and a lifting cylinder 10 arranged in the dust chamber, the lifting cylinder 10 is connected with and drives the exhaust valve of each dust unit dust chamber 7 to open and close, and the controller can adopt a PLC (programmable logic controller) or a time controller.

As another preferred scheme, a group of inlet airflow distribution plates 4 are assembled in the dust chamber 7 below the ionized dust deposition unit, the inlet airflow distribution plates correspond to the lower ports of the anode dust collecting pipes, the inlet airflow distribution plates 4 divide the dust-containing gas entering the dust chamber 7, and the divided airflow corresponds to each anode dust collecting pipe respectively, so that the dust-containing gas is uniformly introduced into each anode dust collecting pipe;

the inner part of the ash bucket 1 is provided with a spoiler 2 for disturbing gas flowing into the ash bucket to form gas vortex in the movement of the ash bucket, and dust accumulated in the bucket is lifted to generate raise dust.

The utility model discloses can extensively be used for thermal power, steel and iron, nonferrous metallurgy, chemical industry, papermaking, cement and various industrial kilns's waste gas dust removal, replace equipment such as current conventional electrostatic precipitator, sack cleaner. The working principle of the equipment is that a plurality of groups of dust removing units arranged in parallel work cooperatively; in an anode dust collecting pipe of a dust removing unit, corona electrodes provided with a plurality of discharge needle groups are arranged along the axial direction (namely the gas flowing direction) of a pipe body, each discharge needle group is distributed in a radial disc shape by a plurality of needles, and a plurality of mushroom-shaped ionized layers are formed in the anode dust collecting pipe after the anode dust collecting pipe is electrified; dusty gas gets into the clean room by the air inlet, through the water conservancy diversion of import airflow distribution board, in the high-tension electric field of evenly leading-in each positive pole pipe that gathers dust upwards with the flue gas, when gas stream formed multichannel mushroom form air current swirl through a plurality of ionized layers, dusty gas is abundant and the positive pole tub (positive pole) pipe wall contact that gathers dust, the chance that the dust is caught to big amplitude has been increased, make the dust of fine grain footpath separate out from the flue gas, collect on the pipe wall of positive pole, clean gas is gathered dust the tub upper end by the positive pole and is flowed, and discharge the clean room through the gas vent.

Another role of the airflow vortices formed by the multi-layer ionosphere is: the air flow drives the dust-containing gas at the central position of the anode dust collecting tube close to the cathode rod to flow and be fused into the whole air flow (shown in figure 3), so that the fine dust is prevented from escaping from the central position of the tube electrode, and the fine dust can be effectively prevented from floating out while the anode is deposited with dust.

In the actual dust removing operation, a plurality of groups of dust removing units are connected in parallel and operate simultaneously (the gas flow is shown as a dotted line in figure 5), and the normal operation of other dust removing units is not influenced when the single group of dust removing units are used for rapping to remove dust. When the dust collecting electrode of one dust removing unit is full of dust, the high voltage of the corona electrode of the group of dust removing units is cut off through the control system, the ionization dust collecting unit is powered off, and meanwhile, the lifting cylinder is controlled to drive the exhaust valve to close the exhaust port of the group of dust removing units so as to block the airflow of the group of dust removing units and perform the static rapping dust removal operation of independent power failure on the dust removing units; other groups of dust removing units normally operate to ensure the continuous dust removing operation of the whole equipment;

the dust in the dust collecting pipes of the anodes is shaken down and stored in a dust hopper through the mechanical shaking of rotary hammers at the bottom side part of the dust collecting electrode (namely the anode) and the top part of the corona electrode (namely the cathode). After the ash removal is finished, the corona electrode is electrified again, the exhaust port is opened, and the dust removal unit is recovered to a normal dust removal state.

This equipment adopts multilayer ionosphere, forms swirl form gas, static mode such as deashing of shaking of beating in the positive pole intraductal formation and has increased substantially dust collection efficiency, effectually separates out fine dust from the flue gas, discharges to reach or be less than 15mg/m year, has solved current dust removal product secondary raise dust problem.

The foregoing detailed description of the embodiments of the invention with reference to preferred embodiments is illustrative rather than limiting in form. On reading the present disclosure, those skilled in the art may modify the technical solutions described in the embodiments or may substitute part of the technical features of the embodiments, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the embodiments of the present disclosure.

Claims

1. A multi-layer mushroom-shaped ionization static dust removal and removal device comprises a control system and a high-voltage power supply (15); the method is characterized in that: the dust removal device also comprises a plurality of groups of dust removal units arranged in parallel; the dust removal unit comprises a dust removal chamber (7), an ash bucket (1), an ionization dust deposition unit and a rapping mechanism;

the ionization dust accumulation unit is assembled in the dust chamber (7) and comprises a dust collection electrode and a corona electrode (6); the dust collecting electrode is a cylindrical anode dust collecting pipe (5), and the anode dust collecting pipes (5) are vertically assembled in the dust removing chamber (7) in parallel through pipe plates; the corona electrode (6) is arranged along the axis of the anode dust collecting tube (5), the corona electrode is composed of a cathode rod (6 a) and a plurality of layers of discharge needle groups (6 b) arranged on the cathode rod, each layer of discharge needle group (6 b) is fixed on the rod body of the cathode rod (6 a) by a plurality of metal needles in a radial shape around the central line, and the rod body of the cathode rod (6 a) is hung on a corona electrode bracket (8) at the upper end of the dust removing chamber (7);

the rapping mechanism comprises a corona electrode rapping mechanism (12) assembled on the corona electrode bracket (8) and a dust collecting electrode rapping mechanism (11) assembled on the shell of the dust removal chamber (7);

an exhaust port (9) is arranged at the upper end or the top of the shell of the dust chamber (7), and an air inlet (3) is formed in the lower section of the shell of the dust chamber (7); the bottom of the dust chamber (7) is connected with the ash bucket (1);

the air inlet (3) of each group of dust removal unit dust removal chamber is communicated with the air inlet channel; the exhaust port (9) of each group of dust removing unit dust removing chambers is communicated with the exhaust channel (13), and the exhaust port (9) is provided with an exhaust valve.

2. The multi-layer mushroom-shaped ionization static ash removal electric dust removal equipment as claimed in claim 1, characterized in that: and a group of inlet airflow distribution plates (4) are arranged in the dust removing chamber (7) below the ionization dust deposition unit.

3. The multi-layer mushroom-shaped ionization static ash removal electric dust removal equipment as claimed in claim 1, characterized in that: a spoiler (2) is assembled inside the ash bucket (1).

4. The multi-layer mushroom-shaped ionization static ash removal electric dust removal equipment as claimed in claim 1, characterized in that: the corona electrode rapping mechanism (12) is structurally a rotary hammer.

5. The multi-layer mushroom-shaped ionization static ash removal electric dust removal equipment as claimed in claim 1, characterized in that: the dust collecting electrode rapping mechanism (11) is structurally a rotary hammer.

6. The multi-layer mushroom ionization static ash removal electric dust removal equipment as claimed in any one of claims 1 to 5, wherein: the control system comprises a lifting cylinder (10) and a controller, is assembled at the upper part of the dust removal chamber (7), and is connected with and controls exhaust valves of the dust removal chambers of the dust removal units.

7. The multi-layer mushroom ionization static ash removal electric dust removal equipment as claimed in any one of claims 1 to 5, wherein: and the high-voltage power supply (15) is assembled at the upper part of the dust removal chamber (7) and is connected with a corona electrode of the ionization dust deposition unit.