Tubular wet electric dust collector

Abstract

The utility model discloses a tubular wet electric dust collector which comprises a shell, the shell is sequentially provided with a waste gas chamber, an electrode chamber and a gas purification chamber from bottom to top, an anode tube bundle is arranged in the electrode chamber, a cathode wire is hung on a mounting frame at the top of the anode tube bundle, a spraying device is arranged in the gas purification chamber, and the spraying device comprises an annular spray head right opposite to the anode tube bundle. The annular nozzle is connected to the lower surface of the mounting frame through a rigid pipeline of a double-layer sleeve structure, the middle of the double-layer sleeve can be used for placing a cathode wire, a pulley is further arranged on the periphery of the mounting frame, and a sliding groove matched with the pulley is formed in the inner wall of the shell. And a brush part is also arranged at the joint of the double-side sleeve and the spray head. The mounting frame and the spray head are driven by the winch to move up and down, so that the height of the spray head is changed, dirt adhered to the inner wall of the anode tube bundle is directly flushed, and meanwhile, the brush is matched for brushing, so that the problem of low long-term use efficiency of a conventional wet electric demister for part of viscous waste gas is solved.

Description

Technical Field

[0001] This utility model relates to the field of dust collector technology, and in particular to a tubular wet electrostatic precipitator. Background Technology

[0002] A wet electrostatic precipitator is a high-voltage electrostatic dust removal device specifically designed for treating humid gases. Through an electrostatic control device and a DC high-voltage generator, a strong electric field is created between the corona wire (cathode wire) and the collecting electrode (anode tube bundle), ionizing the gas molecules and generating a large number of electrons and negative ions. Dust particles combine with these electrons and negative ions, becoming negatively charged, and then tend to discharge towards the anode surface, depositing and thus achieving dust removal.

[0003] Currently, wet electrostatic precipitators mainly include two types: tubular and plate. Tubular wet electrostatic precipitators typically have high electric field strength and deep, multi-level electric fields, resulting in higher dust removal efficiency than plate-type precipitators. They are also less demanding in terms of space requirements and do not require continuous rinsing. However, tubular wet electrostatic precipitators still face several challenges in the field of acrylate synthesis. For example, acrylates, due to their polymerizing properties, are quite viscous and can adhere to or even clog the tubular collecting plates of the precipitator. Regular rinsing cannot effectively remove the sticky dust from the surface of the collecting plates, leading to a gradual decrease in dust removal efficiency over long-term use. Summary of the Invention

[0004] The purpose of this invention is to provide a novel wet electrostatic precipitator that is applicable to the acrylic ester industry and solves the problem of dust collection plate blockage caused by the characteristics of acrylic waste gas during the operation of conventional wet electrostatic precipitators.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A tubular wet electrostatic precipitator includes a housing, within which, from bottom to top, are arranged an exhaust gas chamber, an electrode chamber, and a clean gas chamber. The exhaust gas chamber is connected to an inlet pipe. An anode tube bundle is arranged in the electrode chamber, and a cathode wire is suspended from the top of the anode tube bundle by a mounting frame. The clean gas chamber is equipped with a spray device, which includes a nozzle facing the anode tube bundle. The nozzle is connected to a water pump via a pipe, and the water pump is connected to a water storage tank. The pipe connected to the nozzle is fixedly mounted to the mounting frame. The mounting frame is connected to multiple traction lines, which are connected to a traction cable. The traction cable is connected to a winch via a steering wheel.

[0007] Furthermore, the mounting bracket is provided with pulleys on its outer periphery, and the inner surface of the housing is provided with grooves that are adapted to the pulleys in the vertical direction.

[0008] Furthermore, the pipe connected to the nozzle is also connected to a polymerization inhibitor storage tank via a valve.

[0009] Further, the pipeline between the spray head and the mounting frame is a rigid pipeline, and a brush is fixedly arranged on the rigid pipeline above the spray head.

[0010] Further, the spray head is a ring-shaped spray head, and the rigid pipeline has a double-layer sleeve structure, and the double-layer sleeve is divided into an inner pipe and an outer pipe, and water flows from an annular cavity between the inner pipe and the outer pipe to the ring-shaped spray head, and the cathode wire passes through a hollow cavity of the inner pipe.

[0011] Further, the spray head is further provided with an atomizing nozzle, so that the water consumption is reduced, and the spraying efficiency is improved.

[0012] Further, the waste gas chamber is provided with an air flow distribution plate.

[0013] Further, the anode tube bundle is provided with a plurality of anode tube bundles, and the plurality of anode tube bundles are arranged in a honeycomb shape.

[0014] Further, a reducing pipe is further arranged directly below the waste gas chamber, the reducing pipe gradually narrows downward, and is connected with a high-efficiency filter, and the high-efficiency filter is connected with a circulating water pump.

[0015] Further, the mounting frame is further connected with an insulating box through a circuit.

[0016] The utility model discloses the advantages and beneficial effects are:

[0017] The mounting frame of the suspension cathode wire is movably arranged through a traction line, the spray head of the improved spraying device is arranged, the spray head can directly wash the dust with certain viscosity in the inner wall of the anode tube bundle at close range, and the technical problem that the wet electric dehumidifier cannot effectively target the waste gas with the characteristics such as polymerization is solved.

[0018] The pipeline between the spray head and the mounting frame is improved into a double-layer sleeve structure, water flows from the cavity between the inner pipe and the outer pipe to the spray head, and the cathode wire passes through the hollow cavity of the inner pipe, so that the problem that the cathode wire is wound with the rigid pipeline during the up-down movement of the cathode wire in the rigid pipeline is avoided.

[0019] The brush is arranged on the outer side of the rigid pipeline moving up and down, and the brush is brushed against the stubborn smoke dust on the inner wall of the anode tube bundle while moving up and down with the rigid pipeline, so that the cleaning effect of the viscous smoke dust is improved. DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the utility model embodiment;

[0021] Figure 2 It is the enlarged structure schematic diagram of the utility model embodiment A;

[0022] Figure 3 It is the internal structure schematic diagram of the ring-shaped spray head and the rigid pipeline of the utility model.

[0023] Figure 4 is the section structure diagram of the embodiment of the utility model along B-B;

[0024] In the figure:

[0025] 1 - shell, 2 - waste gas chamber, 3 - electrode chamber, 4 - clean gas chamber, 5 - inlet pipe, 6 - anode tube bundle, 7 - mounting bracket, 8 - cathode wire, 9 - spray head, 10 - towline, 11 - towrope, 12 - steering wheel, 13 - capstan, 14 - pulley, 15 - sliding groove, 16 - valve, 17 - polymerization inhibitor storage tank, 18 - brush, 19 - double-layer sleeve, 20 - annular cavity, 21 - hollow cavity, 22 - airflow distribution plate, 23 - reducing pipe, 24 - high-efficiency filter, 25 - insulation box. DETAILED DESCRIPTION

[0026] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model. EMBODIMENT

[0027] A tubular wet electric dust collector, including shell 1, shell 1 inside from bottom to top is provided with waste gas chamber 2, electrode chamber 3 and clean gas chamber 4 in proper order, the waste gas chamber is communicated with inlet pipe 5, the electrode chamber 3 is provided with anode tube bundle 6, and cathode wire 8 is hung and installed in anode tube bundle 6 top through mounting bracket 7, and the inside of clean gas chamber 4 has a spraying device, the spraying device includes annular spray head 9 opposite anode tube bundle 6, spray head 9 is connected with water pump through pipeline, water pump is connected with water storage tank, and the part pipeline connected with spray head 9 is fixed to mounting bracket 7 from below, and mounting bracket 7 is connected with multiple towlines 10, and multiple towlines 10 are bundled into a towrope 11, and towrope 11 is connected to capstan 13 through steering wheel 12.

[0028] Mounting bracket 7 outer periphery is provided with pulley 14, and the inner surface of shell 1 is provided with sliding groove 15 adapting pulley 14 in the up-down direction. When pulling towline through capstan 13, spray head 9 can move up and down in anode tube bundle 6 along with mounting bracket 7, and directly flushes the smoke dust with larger viscosity, and the pulley sliding groove structure can also prevent mounting bracket 7 from rotating during movement, and prevent mounting bracket from being dislocated with anode tube bundle.

[0029] The pipeline connected with spray head 9 is also connected with polymerization inhibitor storage tank 17 through valve 16. Before the operation of wet electric dust collector, first spray the aerosol with polymerization inhibition effect in anode tube bundle 6, make the polymerization inhibition component adhere to the inner wall of anode tube bundle 6 through static electricity before electrostatic precipitation, thereby reducing the adhesion of the gas with polymerization characteristics in the waste gas to the inner wall of anode tube bundle 6.

[0030] The pipe between the spray head 9 and the mounting frame 7 is a rigid double-layer sleeve structure, and the rigid pipe above the spray head is fixedly provided with a brush 18. The brush 18 brushes the eluted anode tube bundle 6 again while moving up and down with the mounting frame 7. The double-layer sleeve 19 is divided into an inner pipe and an outer pipe, and the water flow flows from the annular cavity 20 between the inner pipe and the outer pipe to the spray head, and the cathode wire 8 passes through the hollow cavity 21 of the inner pipe. The problem that the cathode wire may be wound around the rigid pipe is avoided.

[0031] The spray head 9 can also be provided with an atomizing nozzle, which reduces the use of water while improving the spraying efficiency. Specifically, the atomizing nozzle can atomize the liquid used for elution into fine mist droplets, thereby increasing the contact area of the liquid with the surrounding medium and achieving uniform spraying.

[0032] The exhaust chamber 2 is provided with an air flow distribution plate 22. The air flow distribution plate 22 can uniformly distribute the exhaust gas flowing into the exhaust chamber 2 from the inlet pipe 5, so that the accumulated dust in each anode tube bundle 6 is relatively average, the anode tube bundle 6 at the edge position is fully utilized for electrostatic precipitation, and the efficiency of wet electrostatic precipitation is improved. The anode tube bundle 6 is provided with a plurality of anode tube bundles 6 arranged in a honeycomb shape. The space utilization of the honeycomb arrangement is the highest, which can maximize the working effect of the electrostatic electric field.

[0033] The exhaust chamber 2 is also provided with a reducing pipe 23 directly below, which gradually narrows downward and is connected with a high-efficiency filter 24, and the high-efficiency filter 24 is connected with a circulating water pump. The reducing pipe is used to collect the waste water generated after the anode tube bundle is cleaned by the clean gas chamber spraying device. The solid particles in the waste water are filtered by the high-efficiency filter 24, and the relatively clean water obtained by filtering can be recycled by the circulating water pump for spraying and cleaning again. The mounting frame 7 is also connected with an insulating box 25 for ensuring safety during electrode discharge through a circuit.

[0034] Working principle:

[0035] First open the electrode chamber, open the valve of the polymerization inhibitor storage tank, spray the polymerization inhibitor solution in the electrode chamber through the spraying device, spray a layer of polymerization inhibitor on the inner wall of the anode tube bundle through the electric field effect of the electrode chamber, and close the spraying device. Then the waste gas, especially the flue gas, enters the waste gas chamber from the gas inlet pipe, first needs to pass through the airflow distribution plate to form balanced smoke dust gas, and then passes through the electrode chamber from bottom to top. After the high-voltage electric field is formed by the discharge of the anode tube bundle and the cathode wire in the electrode chamber, the smoke dust is ionized and removed, and the smoke dust is attached to the surface of the anode tube bundle. The polymerization effect of the smoke dust with polymerization characteristics is reduced due to the presence of the polymerization inhibitor, thereby avoiding its adhesion to the surface of the anode tube bundle and being unable to be cleaned. After the wet electric dust collector works for a period of half a month to one month, the surface of the anode tube bundle needs to be flushed. By rotating the winch to move the mounting frame up and down, the spray nozzle will also move up and down with the mounting frame, so that the nozzle can directly flush the stubborn smoke dust particles adhered. In the moving process, the double-layer sleeve is provided with a cathode wire, and the cathode wire will not entangle with the rigid double-layer sleeve. On the other hand, the mounting frame will not relatively rotate due to the pulley sliding groove structure, so as to ensure the stability in the moving process. In addition, the double-layer sleeve is also provided with a brush, which will also perform a brushing work on the inner wall of the anode tube bundle in the moving process of the double-layer sleeve, so as to clean the adhered smoke dust again. The cleaned smoke dust particles will fall to the variable diameter pipe along with the cleaning liquid and be filtered by the high-efficiency filter, and the filtrate is relatively clean water and can be recycled, and the filtered smoke dust can be packaged and cleaned.

[0036] The above only describes preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection range of the present application.

Claims

1. A tubular wet electric dust collector comprising a housing, a waste gas chamber, an electrode chamber and a clean gas chamber being sequentially arranged from bottom to top in the housing, the waste gas chamber being communicated with an inlet pipe, the electrode chamber being provided with an anode tube bundle, and a cathode wire being suspended by a mounting frame at the top of the anode tube bundle, characterized in that, The net gas chamber is provided with a spraying device, the spraying device comprises a nozzle opposite to the anode tube bundle, the nozzle is connected with a water pump through a pipeline, the water pump is connected with a water storage tank, the pipeline connected with the nozzle is fixedly arranged on a mounting rack, the mounting rack is connected with a plurality of traction lines, the plurality of traction lines are connected to a traction cable, the traction cable is connected to a winch through a steering wheel.

2. The tubular wet electrostatic precipitator according to claim 1, characterized in that The mounting rack is provided with a pulley around the periphery, and the inner surface of the shell is provided with a sliding groove matched with the pulley in the up-down direction.

3. A tubular wet electrostatic precipitator according to claim 1 or 2, c h a r a c t e r i s e d in that The pipeline connected with the nozzle is also connected with a polymerization inhibitor storage tank through a valve.

4. The tubular wet electrostatic precipitator according to claim 3, characterized in that The pipeline between the nozzle and the mounting rack is a rigid pipeline, and a brush is fixedly arranged on the rigid pipeline above the nozzle.

5. The tubular wet electrostatic precipitator according to claim 4, characterized in that The nozzle is a ring-shaped nozzle, the rigid pipeline is a double-layer sleeve structure, the double-layer sleeve is divided into an inner tube and an outer tube, water flows from the annular cavity between the inner tube and the outer tube to the ring-shaped nozzle, and the cathode wire passes through the hollow cavity of the inner tube.

6. The tubular wet electrostatic precipitator according to claim 1 or 4, characterized in that The nozzle is also provided with an atomizing nozzle.

7. The tubular wet electrostatic precipitator according to claim 1, characterized in that A gas flow distribution plate is further arranged in the exhaust gas chamber.

8. The tubular wet electrostatic precipitator according to claim 1, characterized in that A reducing pipe is further arranged directly below the exhaust gas chamber, the reducing pipe gradually narrows downward and is connected with a high-efficiency filter, the high-efficiency filter is connected with a circulating water pump, the reducing pipe is used to collect the wastewater generated after the spraying device of the net gas chamber washes the anode tube bundle, the solid particles in the wastewater are filtered by the high-efficiency filter, and the relatively clean water obtained by filtering can be recycled by the circulating water pump and used for spraying and washing again.

9. The tubular wet electrostatic precipitator according to claim 1, characterized in that A plurality of anode tube bundles are arranged, and the plurality of anode tube bundles are arranged in a honeycomb shape.

10. The tubular wet electrostatic precipitator according to claim 1, characterized in that The mounting rack is also connected with an insulation box through a circuit.

Images