CN205627537U - Two unification absorption towers of desulfurization and wet electrostatic precipitator - Google Patents

Abstract

Desulfurization and wet electrostatic precipitator two-in-one absorption tower, which relates to the technical field of environmental protection equipment; a uniform smoke distributor is arranged above the flue gas inlet, and several spray layers are arranged in the absorption tower body, and each spray layer is respectively connected to the desulfurization agent pipe; the spray layer is provided with a lower demister, above the lower demister is provided with an upper demister, and between the lower demister and the upper demister is provided with a second cleaning pipe. The bottom of the chamber is provided with a diversion device, and the middle air chamber is provided with a cathode system, a honeycomb anode tube bundle and a distribution device; the middle air chamber is provided with a flushing device, and one end of the flushing device is connected to the second backwash water inlet; A maintenance crane is arranged outside the top of the middle air chamber, and an insulating box and a power transformer are arranged in the maintenance crane. The utility model has high dust removal efficiency and is suitable for the treatment of wet flue gas, especially for the treatment of dusty flue gas after wet desulfurization in power plants, steel mills, chemical plants and other enterprises.

Description

Desulfurization and wet electrostatic precipitator two-in-one absorption tower

technical field

The utility model relates to the technical field of environmental protection equipment, in particular to a two-in-one absorption tower of desulfurization and wet electrostatic precipitator.

Background technique

Power plants, steel mills, chemical plants and other enterprises contain fine particulate matter (PM2.5 dust, SO3 acid mist, aerosol, fly ash particles, gypsum particles, sulfuric acid crystals, fine mist droplets, mercury and other pollutants after wet desulfurization) ), heavy metals (Hg, As, Se, Pb, Cr), organic pollutants (polycyclic aromatic hydrocarbons, dioxins) and other dust and flue gases need to be treated, while ordinary absorption towers cannot remove dust and cannot be adapted to wet flue gas Treatment, especially now that PM2.5 dust is raging, has a great impact on people's work and living environment quality. The dust wet electrostatic precipitator has high dust removal efficiency, no floor space, small pressure loss, simple operation, low energy consumption, no moving parts, no secondary dust, low maintenance cost, short production downtime, and can work in flue gas The dew point temperature is below, due to the compact structure, it can be combined with other flue gas treatment equipment, and the design forms are diversified.

Utility model content

The purpose of the utility model is to provide a desulfurization and wet electrostatic precipitator two-in-one absorption tower with simple structure, reasonable design and convenient use for the defects and deficiencies of the prior art.

In order to achieve the above purpose, the technical solution adopted by the utility model is: it includes the absorption tower body, wet electrostatic precipitator, flue gas inlet, uniform smoke distributor, spray layer, lower demister, upper demister, second Cleaning pipe, first cleaning pipe, first backwash water inlet, desulfurizing agent circulation pump, desulfurizing agent pipe; above the absorption tower body is provided with a wet electrostatic precipitator, and the lower part of the absorption tower body is provided with a flue gas inlet, A uniform smoke distributor is arranged above the flue gas inlet, and several spray layers are arranged in the absorption tower body, and each spray layer is respectively connected to a desulfurizer pipe, and the desulfurizer pipe is connected to a desulfurizer circulation pump; the spray layer There is a lower demister above the lower demister, an upper demister above the lower demister, a second cleaning pipe between the lower demister and the upper demister, and a first cleaning pipe above the upper demister. One end of the second cleaning pipe and the first cleaning pipe is connected to the first backwash water inlet; the wet electrostatic precipitator includes a second backwash water inlet, a flushing device, a maintenance crane, a lower air chamber, a flow guiding device, Distribution device, middle air chamber, honeycomb anode tube bundle, cathode system, upper air chamber, insulation box, power transformer, chimney; the upper and lower ends of the lower air chamber are respectively connected with the middle air chamber and the absorption tower body, and the middle air chamber The bottom is provided with a diversion device, and the middle air chamber is provided with a cathode system, a honeycomb anode tube bundle and a distribution device; the upper end of the middle air chamber is connected to an upper air chamber, and the top of the upper air chamber is connected to a chimney; the middle air chamber is A flushing device is provided, and one end of the flushing device is connected to the second backwashing water inlet; a maintenance crane is provided on the outside of the top of the middle air chamber, and an insulation box and a power transformer are provided in the maintenance crane.

Preferably, the lower part of the absorption tower body is provided with an absorbent outlet, and the absorbent outlet is connected to a desulfurizer circulation pump.

As a preference, the bottom of the absorption tower body is provided with a sewage outlet.

Preferably, the side wall of the chimney is provided with detection holes.

When the utility model is in operation, the lower demister and the upper demister reduce the influence of the large particle spray slurry on the wet electrostatic precipitator, which is beneficial to the uniformity of the gas flow field in the wet electrostatic precipitator, and the absorption tower body washes the flue gas through absorption The lower and upper mist eliminators on the top of the tower body then enter the wet electrostatic precipitator, and the clean flue gas is discharged through the straight chimney.

After adopting the above structure, the beneficial effects of the utility model are: the desulfurization and wet electrostatic precipitator two-in-one absorption tower described in the utility model has the advantages of high dust removal efficiency, small pressure loss, simple operation, low energy consumption, and no movement Parts, no secondary dust, low maintenance costs, short production downtime, can work below the flue gas dew point temperature, can be combined with other flue gas treatment equipment due to its compact structure, and has a variety of design forms, etc. The dust removal efficiency is cross flow Twice that of the wet electrostatic precipitator; the dust is cleaned by washing the surface of the dust collector with liquid, which can effectively collect fine particles (PM2.5 dust, SO3 acid mist, aerosol, fly ash particles, gypsum particles, sulfuric acid crystals, Fine mist, mercury and other pollutants), heavy metals (Hg, As, Se, Pb, Cr), organic pollutants (polycyclic aromatic hydrocarbons, dioxins), etc., the dust emission in wet flue gas can reach 10mg /m or even below 5mg/m, the dust collection performance has nothing to do with the dust characteristics, it is suitable for the treatment of wet flue gas, especially for the treatment of dusty flue gas after wet desulfurization in power plants, steel plants, chemical plants and other enterprises, no need Long-term water spray or overflow water, only regularly flushing according to the system operating conditions, only consumes a very small amount of water, this part of the water can be recycled and recycled, without secondary pollution.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

Explanation of reference signs:

1. Absorption tower body; 2. Wet electrostatic precipitator; 3. Flue gas inlet; 4. Uniform smoke distributor; 5.

Spray layer; 6. Lower demister; 7. Upper demister; 8. Second cleaning pipe; 9. First cleaning pipe;

10. The first backwash water inlet; 11. Desulfurization agent circulation pump; 12. Desulfurization agent pipe; 13. Absorption

14. Sewage outlet; 15. Second backwash water inlet; 16. Flushing device; 17. Maintenance

Repair crane; 18, lower air chamber; 19, diversion device; 20, distribution device; 21, middle air chamber; 22,

Honeycomb anode tube bundle; 23. Cathode system; 24. Upper air chamber; 25. Insulation box; 26. Power transformer

Pressure device; 27, chimney; 28, detection hole.

detailed description

Below in conjunction with accompanying drawing, the utility model is described further.

Referring to Fig. 1, this specific embodiment adopts the following technical scheme: it includes an absorption tower body 1, a wet electrostatic precipitator 2, a flue gas inlet 3, a uniform smoke distributor 4, a spray layer 5, and a lower mist eliminator 6 , upper demister 7, second cleaning pipe 8, first cleaning pipe 9, first backwash water inlet 10, desulfurizing agent circulation pump 11, desulfurizing agent pipe 12; above the absorption tower body 1 is provided with a wet In the electrostatic precipitator 2, the lower part of the absorption tower body 1 is provided with a flue gas inlet 3, and the upper part of the flue gas inlet 3 is provided with a uniform smoke distributor 4, and a number of spray layers 5 are arranged in the absorption tower body 1, and each spray layer 5 are respectively connected to the desulfurizing agent pipe 12, and the desulfurizing agent pipe 12 is connected to the desulfurizing agent circulating pump 11; the lower demister 6 is arranged above the spray layer 5, and the upper demister 7 is arranged above the lower demister 6 A second cleaning pipe 8 is arranged between the lower demister 6 and the upper demister 7, a first cleaning pipe 9 is arranged above the upper demister 7, and one end of the second cleaning pipe 8 is connected to the first cleaning pipe 9 The first backwash water inlet 10; the wet electrostatic precipitator 2 includes a second backwash water inlet 15, a flushing device 16, a maintenance crane 17, a lower air chamber 18, a flow guiding device 19, a distribution device 20, a middle air Chamber 21, honeycomb anode tube bundle 22, cathode system 23, upper air chamber 24, insulation box 25, power transformer 26, chimney 27; the upper and lower ends of the lower air chamber 18 are respectively connected with the middle air chamber 21 and the absorption tower body 1 , the bottom of the middle air chamber 21 is provided with a guide device 19, and the middle air chamber 21 is provided with a cathode system 23, a honeycomb anode tube bundle 22 and a distribution device 20; the upper end of the middle air chamber 21 is connected with an upper air chamber 24, and the upper end The top of the air chamber 24 is connected with a chimney 27; the middle air chamber 21 is provided with a flushing device 16, and one end of the flushing device 16 is connected with the second backwash water inlet 15; the top outside of the middle air chamber 21 is provided with The maintenance crane 17 is provided with an insulating box 25 and a power transformer 26 in the maintenance crane 17 .

As a preference, the lower part of the absorption tower body 1 is provided with an absorbent outlet 13, and the absorbent outlet 13 is connected with a desulfurizer circulation pump 11.

As a preference, the bottom of the absorption tower body 1 is provided with a sewage outlet 14 .

Preferably, the side wall of the chimney 27 is provided with a detection hole 28 .

During the operation of this specific embodiment, the lower demister 6 and the upper demister 7 reduce the impact of the large particle spray slurry on the wet electrostatic precipitator 2, which is beneficial to the uniform gas flow field in the wet electrostatic precipitator 2 and the absorption tower body 1 The scrubbing flue gas passes through the lower mist eliminator 6 and upper mist eliminator 7 at the top of the absorption tower body 1 and then enters the wet electrostatic precipitator 2, and the clean flue gas is discharged through the straight chimney 27.

After adopting the above structure, the beneficial effects of this specific embodiment are: the desulfurization and wet electrostatic precipitator two-in-one absorption tower described in this specific embodiment has high dust removal efficiency, small pressure loss, simple operation, low energy consumption, No moving parts, no secondary dust, low maintenance costs, short production downtime, can work below the flue gas dew point temperature, can be combined with other flue gas treatment equipment due to its compact structure, and has a variety of design forms, etc., the dust removal efficiency It is twice that of the cross-flow wet electrostatic precipitator; it uses liquid to wash the surface of the dust collector for dust removal, which can effectively collect fine particles (PM2.5 dust, SO3 acid mist, aerosol, fly ash particles, gypsum particles, sulfuric acid contact crystals, fine droplets, mercury and other pollutants), heavy metals (Hg, As, Se, Pb, Cr), organic pollutants (polycyclic aromatic hydrocarbons, dioxins), etc. Up to 10mg/m or even below 5mg/m, the dust collection performance has nothing to do with the dust characteristics, it is suitable for the treatment of wet flue gas, especially for the treatment of dusty flue gas after wet desulfurization in power plants, steel mills, chemical plants and other enterprises, It does not need long-term water spray or overflow water, only regularly flushes according to the system operating conditions, only consumes a very small amount of water, and this part of the water can be recycled and recycled without secondary pollution.

The basic principles and main features of the utility model and the advantages of the utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. desulfurization and the two-in-one absorption tower of wet cottrell, it is characterised in that: it comprises absorption tower originally Body, wet cottrell, gas approach, uniform smoke distribution device, spraying layer, lower demister, above except mist Device, the second cleaning pipe, the first cleaning pipe, the first backwashing water import, desulfurizing agent circulating pump, desulfurizing agent Pipe；Described absorption tower body be provided above wet cottrell, the bottom of absorption tower body sets Be equipped with gas approach, gas approach be provided above uniform smoke distribution device, if absorption tower this most internal be provided with Dry spraying layer, each spraying layer connects desulfurizing agent pipe respectively, and desulfurizing agent pipe is connected with desulfurizing agent circulating pump； Described spraying layer is provided above lower demister, lower demister be provided above demister, under remove Be provided with the second cleaning pipe between day with fog and upper demister, upper demister be provided above the first cleaning pipe, Second cleans pipe connects the first backwashing water import with first cleaning pipe one end；Described wet static dedusting Device comprises the second backwashing water import, flusher, maintenance loop wheel machine, lower chamber, guiding device, distribution Device, middle air chamber, the tube bank of honeycomb anode, cathod system, upper chamber, insulated case, mains transformer, Chimney；Described lower chamber upper and lower end is connected with middle air chamber, absorption tower body respectively, the end of middle air chamber Portion is provided with guiding device, is provided with cathod system, the tube bank of honeycomb anode and distribution apparatus in middle air chamber； Described middle air chamber upper end connects upper chamber, and the top of upper chamber connects chimney；Described middle air chamber Inside being provided with flusher, flusher one end is connected with the second backwashing water import；Described middle air chamber Top outer be provided with maintenance loop wheel machine, be provided with insulated case and mains transformer in maintenance loop wheel machine.

Desulfurization the most according to claim 1 and the two-in-one absorption tower of wet cottrell, its feature Being: described absorption tower body lower part is provided with absorbent outlet, absorbent outlet circulates with desulfurizing agent Pump connects.

Desulfurization the most according to claim 1 and the two-in-one absorption tower of wet cottrell, its feature It is: the bottom of described absorption tower body is provided with sewage draining exit.

Desulfurization the most according to claim 1 and the two-in-one absorption tower of wet cottrell, its feature It is: described chimney jambs is provided with detection hole.