CN208177211U - A kind of denitration integrated device - Google Patents
A kind of denitration integrated device Download PDFInfo
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- CN208177211U CN208177211U CN201820483773.3U CN201820483773U CN208177211U CN 208177211 U CN208177211 U CN 208177211U CN 201820483773 U CN201820483773 U CN 201820483773U CN 208177211 U CN208177211 U CN 208177211U
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Abstract
The utility model discloses a kind of denitration integrated device, including chilling flue, absorption tower and ozone generator, high-temp waste gas enters chilling flue, spray head sprays low-temperature circulating slurries to high-temp waste gas, loop slurry is alkalinity, high-temp waste gas desulfurization, after desulfurization, insoluble nitrogen oxides and the ozone of ozone jet pipe injection form soluble N in flue gas2O5, and it is dissolved in water and forms nitric acid, high-temperature flue gas enters absorption tower, and the drop carried in flue gas is absorbed by demister, and the aeration structure in slurry pool can be handled the COD of loop slurry to meeting discharge standard.Exhaust-gas treatment is carried out using the denitration integrated device of the utility model, desulphurization denitration process carries out in chilling flue, reduces and independently handles the process of pollutant, shorten process, simplify device structure, improves treatment effeciency.
Description
Technical field
The utility model relates to pollutant control technical fields, more particularly to a kind of denitration integrated device.
Background technique
With country and local, China's oil petrochemical industry row increasingly stringent for the pollutant emission norm controlling of industrial waste gas
The processing problem of the high-salt wastewater pollutant of industry, metal smelt industry etc. is more and more prominent, the production processes such as chemical plant, smeltery
In can generate containing pollutants such as sulfur dioxide, nitrogen oxides, dust (PM10, PM2.5), mercury, hydrogen sulfide, carbon black, hydrogen chloride
High-temperature flue gas, due to dry desulfurization denitration there is treatment effeciencies it is low, energy consumption is high, medicament utilization rate is low the problems such as, and it is half-dried
Method there are slurrying it is complicated, treatment effeciency is low the problems such as, installed place in the especially Petrochemical Enterprises of chemical plant at home at present
70%, which is had more than, in reason device uses wet treatment method.
In purification treatment technologies such as existing wet desulphurization, denitration, dedusting, demercurations, desulfurization after first denitration is mostly used greatly
Form, usual process is very long, first uses non-selective catalytic reduction SNCR technology or selective catalytic reduction SCR technology or both
In conjunction with denitration is carried out, it is respectively necessary for the suitable warm area of 850-1050 DEG C He 300-420 DEG C, is required to be transformed boiler, change
This high operation that also will affect production upstream device is caused, reduces production capacity, in addition the treatment effeciency of SNCR denitration technology is non-
Normal low 50-70%, and SCR denitration technology needs a large amount of expensive catalyst, spent catalyst will also result in as fixed-end forces
Secondary treatment burden；Conventional wet lay desulfurization would generally configure drain processing unit, be provided with oxidation tank or aeration tank, special to locate
COD etc. is managed, otherwise discharging any waste liquor is difficult to qualified discharge, also increases the processing load of sewage treatment plant.
Therefore, how to change in the prior art, the status of desulfurizing and denitrifying process inefficiency and complex disposal process, be this
Field technical staff's urgent problem to be solved.
Utility model content
The purpose of the utility model is to provide a kind of denitration integrated devices, above-mentioned of the existing technology to solve
Problem improves the treatment effeciency of wet desulphurization denitration.
To achieve the above object, the utility model provides following scheme: the utility model provides a kind of desulphurization denitration one
Body makeup is set, including chilling flue, absorption tower and ozone generator, chilling flue one end are connected with high-temp waste gas, institute
The other end for stating chilling flue is connected with the absorption tower, and setting ozone jet pipe and spray head, described smelly in the chilling flue
Oxygen jet pipe is connected with the ozone generator, and demister and slurry pool, the spray head and the slurry are arranged in the absorption tower
Liquid pool is connected, and the slurry pool is set to the lower part of the demister, and aeration structure, the urgency is arranged in the slurries bottom of pond portion
Between the demister and the slurry pool, the absorption tower setting flue gas goes out the connectivity part on cold smoke road and the absorption tower
Mouthful, the exhanst gas outlet is located at the top of the demister.
Preferably, denitration integrated device further includes heat exchanger, and the chilling flue passes through the heat exchanger and height
Warm exhaust gas is connected, and the exhanst gas outlet is connected by the heat exchanger with external environment.
Preferably, the chilling flue is vertically arranged, and the upper end of the chilling flue is connected with high-temp waste gas, the urgency
The lower end in cold smoke road is connected with the absorption tower, and the spray head is inverse spray spray head.
Preferably, the ozone jet pipe includes ozone general pipeline and several ozone branch pipes, the ozone general pipeline and the ozone
Generator is connected, and the ozone branch pipe is connected with the ozone general pipeline, and jet port, the spray are arranged on the ozone branch pipe
Angle between the axis direction of loophole and the flow direction of high-temperature flue gas is 45 °.
Preferably, the spray head is connected by circulation slurry pump with the slurry pool, and the circulation slurry pump is also connected with
There is lye to add structure and pH control structure, the pH control structure is capable of the pH value of test loop slurries, and the lye adds
Structure can add lye into loop slurry.
Preferably, the aeration structure includes gas distribution pipe, and the gas distribution pipe includes gas distribution supervisor and gas distributionbranch pipe, the cloth
Gas branch pipe is connected with gas distribution supervisor, and the gas distributionbranch pipe makees tree form distribution, the gas distributionbranch pipe along gas distribution supervisor
It is upper to be evenly distributed with solarization air cap.
Preferably, the demister is two-stage, and demister described in two-stage is superposed.
Preferably, the absorption tower also sets up cleaning spray structure, and the cleaning spray structure is connected with external water source,
The cleaning spray structure is level Four, and level Four cleaning spray structure is respectively arranged at the two sides of demister described in two-stage, and described
Cleaning spray structure carries out spray cleaning respectively for two sides under the beam of the demister.
Preferably, the absorption tower is also provided with water supplement structure, and the water supplement structure is connected with the slurry pool, described
Water supplement structure can supplement process water into the slurry pool.
The utility model achieves following technical effect compared with the existing technology: desulphurization denitration one provided by the utility model
Body makeup is set, including chilling flue, absorption tower and ozone generator, chilling flue one end are connected with high-temp waste gas, chilling cigarette
The other end in road is connected with absorption tower, and setting ozone jet pipe and spray head, ozone jet pipe are connected with ozone generator in chilling flue
Logical, spray head is connected with slurry pool, and demister is arranged in absorption tower and slurry pool, slurry pool are set to the lower part of demister, starches
Between demister and slurry pool, absorption tower is set the connectivity part on liquid pool bottom setting aeration structure, chilling flue and absorption tower
Exhanst gas outlet is set, exhanst gas outlet is located at the top of demister.High-temp waste gas enters chilling flue, and spray head sprays low to high-temp waste gas
Warm loop slurry, loop slurry are alkalinity, and high-temp waste gas desulfurization, after desulfurization, insoluble nitrogen oxides and ozone spray in flue gas
The ozone of pipe inspection forms soluble N2O5, and be dissolved in water and form nitric acid, high-temperature flue gas enters absorption tower, the liquid carried in flue gas
Drop is absorbed by demister, and the aeration structure in slurry pool can be handled the COD of loop slurry to meeting discharge standard.Using this
The denitration integrated device of utility model carries out exhaust-gas treatment, and desulphurization denitration process carries out in chilling flue, reduces
The process of pollutant is independently handled, process is shortened, simplifies device structure, improves treatment effeciency.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the overall structure diagram of the denitration integrated device of the utility model；
Wherein, 1 is heat exchanger, and 2 be chilling flue, and 3 be spray head, and 4 be ozone generator, and 5 be ozone jet pipe, and 6 be circulation
Slurries pump, 7 be absorption tower, and 8 be demister, and 9 be slurry pool.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of denitration integrated devices, to solve of the existing technology ask
Topic improves the treatment effeciency of wet desulphurization denitration.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Referring to FIG. 1, Fig. 1 is the overall structure diagram of the denitration integrated device of the utility model.
The utility model provides a kind of denitration integrated device, including chilling flue 2, absorption tower 7 and ozone occur
Device 4,2 one end of chilling flue are connected with high-temp waste gas, and the other end of chilling flue 2 is connected with absorption tower 7, chilling flue 2
Interior setting ozone jet pipe 5 and spray head 3, ozone jet pipe 5 are connected with ozone generator 4, setting demister 8 and slurry in absorption tower 7
Liquid pool 9, spray head 3 are connected with slurry pool 9, and slurry pool 9 is set to the lower part of demister 8,9 bottom of slurry pool setting aeration knot
For the connectivity part on structure, chilling flue 2 and absorption tower 7 between demister 8 and slurry pool 9, exhanst gas outlet, cigarette is arranged in absorption tower 7
Gas outlet is located at the top of demister 8.
When handling exhaust gas using the denitration integrated device of the utility model, high-temp waste gas enters chilling flue 2, spray
First 3 spray low-temperature circulating slurries to high-temp waste gas, and loop slurry is alkalinity, and high-temp waste gas desulfurization is insoluble in flue gas after desulfurization
Nitrogen oxides and ozone jet pipe 5 spray ozone form soluble N2O5, and be dissolved in water and form nitric acid, high-temperature flue gas enters suction
Tower 7 is received, the drop carried in flue gas is absorbed by demister 8, and the aeration structure in slurry pool 9 can will be at the COD of loop slurry
To discharge standard is met, the process of desulphurization denitration is intersected to be carried out reason, is simplified process flow, is improved utilization ratio of device and processing
Efficiency.
Specifically, denitration integrated device further includes heat exchanger 1, and chilling flue 2 passes through heat exchanger 1 and high-temp waste gas
It is connected, exhanst gas outlet is connected by heat exchanger 1 with external environment.High-temp waste gas and the wet flue gas handled by desulphurization denitration
Pass through heat exchanger 1, can not only be cooled down in advance to high-temp waste gas, the flue-gas temperature that can also make that treated is higher than dew point temperature
Degree, avoids causing acid corrosion to equipment, the flue gas for being discharged into atmosphere is not easy to condense out free water in the short time, therefore is not easy to occur
Visual white misty rain there will not be saliferous drop and drip in ground layer, reduces to neighbouring device, agricultural land soil and life
The harm in area living etc..
Wherein, chilling flue 2 is vertically arranged, and the upper end of chilling flue 2 is connected with high-temp waste gas, under chilling flue 2
End is connected with absorption tower 7, and spray head 3 is inverse spray spray head 3, is spray head 3 of the large aperture without blocking, reversely sprays height with high-temp waste gas
The loop slurry of high flow capacity is pressed, loop slurry encounters high temperature smoke waste gas, and gas-liquid intense contact forms the foam regions of strong turbulence, dimension
Hold momentum balance, desulfurization dust-removing efficiency is high, and when spray, every cubic metre of flue gas sprays 5-12L loop slurry, the pressure of inverse spray spray head 3
It is reduced to 2-2.5kPa, the pressure drop of whole device is lower than 8kPa.
More specifically, ozone jet pipe 5 includes ozone general pipeline and several ozone branch pipes, ozone general pipeline and 4 phase of ozone generator
Connection, ozone branch pipe are connected with ozone general pipeline, and jet port, the axis direction and high-temperature flue gas of jet port are arranged on ozone branch pipe
Flow direction between angle be 45 °.Ozone jet pipe 5 sprays ozone to high-temperature flue gas, and ozone can be with the nitrogen oxygen in exhaust gas
Compound reaction, the strong oxidizing property of ozone and highly selective available 98% or more denitration efficiency.It is herein it should be noted that few
Amount has neither part nor lot in the ozone of denitration, can be used for the sodium sulfite in the loop slurry of part being oxidized to sodium sulphate, without being equipped with ozone
Destructor prevents secondary pollution.
Further, spray head 3 is connected by circulation slurry pump 6 with slurry pool 9, and circulation slurry pump 6 can be by absorption tower 7
The loop slurry of tower bottom is delivered to spray head 3 and is sprayed, while by part loop slurry discharger；Circulation slurry pump 6 also connects
It is connected to lye and adds structure and pH control structure, pH control structure is capable of the pH value of test loop slurries, and lye adds structure energy
It is enough that lye is added into loop slurry.In this embodiment, the lye added into loop slurry is sodium hydroxide, warp
The sulfur dioxide for crossing 3 spray-absorption of spray head is dissolved in loop slurry, and is constantly reacted with sodium hydroxide, formed sodium sulfite and
Sodium sulphate is constantly accumulated in loop slurry, and the density or specific gravity in loop slurry constantly increase, for that purpose it is necessary to constantly by it
In a small amount of absorbing liquid discharge to prevent sodium salt from accumulating and crystallize on the wall.It is drawn by being mounted on from device major cycle pipeline
Small diameter pipeline on densimeter measure density of liquid phase；Density or rate of specific gravity control pass through regulating valve 1.1 or so
Control the discharge amount of waste liquid.
In addition, aeration structure includes gas distribution pipe, gas distribution pipe includes gas distribution supervisor and gas distributionbranch pipe, gas distributionbranch pipe and gas distribution master
Pipe is connected, and gas distributionbranch pipe makees tree form distribution along gas distribution supervisor, and uniformly distributed solarization air cap on gas distributionbranch pipe improves aeration effect.
Further, demister 8 is two-stage, and two-stage demister 8 is superposed.Ground is corresponded, absorption tower 7 is also set
Cleaning spray structure is set, cleaning spray structure is connected with external water source, and cleaning spray structure is level Four, level Four cleaning spray knot
Structure is respectively arranged at the two sides of two-stage demister 8, and cleaning spray structure is sprayed respectively for two sides under the beam of demister 8
Cleaning, effectively avoids 8 fouling blockage of demister.
Absorption tower 7 is also provided with water supplement structure, and water supplement structure is connected with slurry pool 9, and water supplement structure can be to slurry pool 9
Middle supplement process water.With the discharge of wet flue gas after desulphurization denitration, part loop slurry is vaporized, and causes system water loss,
The liquid level in absorption tower 7 is reduced, in addition, since salt accumulation inorganic in waste liquid, density increase and continuous discharge unit waste liquid
So that liquid level constantly reduces, absorption tower 7 operates under conditions of no liquid phase in order to prevent, while maintaining the water balance of system,
The liquid level on absorption tower 7 must be controlled, while supplement fresh water, so that device works normally；Using differential pressure transmitter
Liquid level is controlled, liquidometer is mounted on the side wall of container, and as liquid level reduces, opening regulating valve makes fresh water enter absorption tower
In 7.
After high-temperature flue gas enters denitration integrated device, high-temp waste gas and inverse spray loop slurry intense contact are formed by force
Behind the froth zone of turbulent flow standing wave, gas cool down water saturation after, gas-liquid contact formed strong turbulence standing wave foam regions, gas-liquid it is mutual
Mutually push keeps momentum balance, makes that froth zone is stable, increases contact effect, flue gas persistently it is cooling reach adiabatic saturation temperature and
Water saturation, while the SO in flue gas2With dust by liquid absorption.After contact, liquid falls on slurry pool 9, passes through circulation slurry pump 6
Pump drains into spray head 3 and is recycled, and lye is added on loop slurry pipeline by pH control structure, neutralizes the SO of absorption2, mention
High desulfurization efficiency；After above-mentioned high-temp waste gas and inverse jetting liquid intense contact form the froth zone of strong turbulence standing wave, into ozone
Jeting area, insoluble nitrogen oxides (usually NO and NO in the ozone and flue gas of this region injected system2) rapidly
Reaction forms soluble N2O5, it reacts to form nitric acid with water, be sprayed using the loop slurry for having filled alkali neutralization, it is anti-with nitric acid
NaNO should be generated3.The desulphurization denitration process of the utility model carries out in chilling flue 2, and it is dirty to reduce independently processing
The process of object is contaminated, process is shortened, simplifies device structure, improves treatment effeciency.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. a kind of denitration integrated device, it is characterised in that: described including chilling flue, absorption tower and ozone generator
Chilling flue one end is connected with high-temp waste gas, and the other end of the chilling flue is connected with the absorption tower, the chilling
Setting ozone jet pipe and spray head, the ozone jet pipe are connected with the ozone generator in flue, are arranged in the absorption tower
Demister and slurry pool, the spray head are connected with the slurry pool, and the slurry pool is set to the lower part of the demister, institute
State slurries bottom of pond portion setting aeration structure, the connectivity part on the chilling flue and the absorption tower is located at the demister and described
Between slurry pool, exhanst gas outlet is arranged in the absorption tower, and the exhanst gas outlet is located at the top of the demister.
2. denitration integrated device according to claim 1, it is characterised in that: it further include heat exchanger, the chilling
Flue is connected by the heat exchanger with high-temp waste gas, and the exhanst gas outlet is connected by the heat exchanger with external environment
It is logical.
3. denitration integrated device according to claim 1, it is characterised in that: the chilling flue is vertically arranged,
The upper end of the chilling flue is connected with high-temp waste gas, and the lower end of the chilling flue is connected with the absorption tower, described
Spray head is inverse spray spray head.
4. denitration integrated device according to claim 2, it is characterised in that: the ozone jet pipe includes that ozone is total
Pipe and several ozone branch pipes, the ozone general pipeline are connected with the ozone generator, and the ozone branch pipe and the ozone are total
Pipe is connected, and is arranged jet port on the ozone branch pipe, the flow direction of the axis direction of the jet port and high-temperature flue gas it
Between angle be 45 °.
5. denitration integrated device according to claim 1, it is characterised in that: the spray head passes through circulation slurry pump
It is connected with the slurry pool, the circulation slurry pump is also connected with lye and adds structure and pH control structure, the pH control
Structure is capable of the pH value of test loop slurries, and the lye adds structure can add lye into loop slurry.
6. denitration integrated device according to claim 1, it is characterised in that: the aeration structure includes gas distribution
Pipe, the gas distribution pipe include gas distribution supervisor and gas distributionbranch pipe, and the gas distributionbranch pipe is connected with gas distribution supervisor, the gas distribution
Branch pipe makees tree form distribution, uniformly distributed solarization air cap on the gas distributionbranch pipe along gas distribution supervisor.
7. denitration integrated device according to claim 1, it is characterised in that: the demister is two-stage, two-stage
The demister is superposed.
8. denitration integrated device according to claim 7, it is characterised in that: the absorption tower also sets up cleaning spray
Structure is drenched, the cleaning spray structure is connected with external water source, and the cleaning spray structure is level Four, level Four cleaning spray knot
Structure is respectively arranged at the two sides of demister described in two-stage, and the cleaning spray structure is respectively under the beam of the demister two
Side carries out spray cleaning.
9. denitration integrated device according to claim 8, it is characterised in that: the absorption tower is also provided with moisturizing
Structure, the water supplement structure are connected with slurry pool, and the water supplement structure can supplement process water into the slurry pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820483773.3U CN208177211U (en) | 2018-04-08 | 2018-04-08 | A kind of denitration integrated device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820483773.3U CN208177211U (en) | 2018-04-08 | 2018-04-08 | A kind of denitration integrated device |
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| CN208177211U true CN208177211U (en) | 2018-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108261905A (en) * | 2018-04-08 | 2018-07-10 | 北京美斯顿科技开发有限公司 | A kind of denitration integrated device and method |
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2018
- 2018-04-08 CN CN201820483773.3U patent/CN208177211U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108261905A (en) * | 2018-04-08 | 2018-07-10 | 北京美斯顿科技开发有限公司 | A kind of denitration integrated device and method |
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