CN108905407A - The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing - Google Patents
The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing Download PDFInfo
- Publication number
- CN108905407A CN108905407A CN201810583391.2A CN201810583391A CN108905407A CN 108905407 A CN108905407 A CN 108905407A CN 201810583391 A CN201810583391 A CN 201810583391A CN 108905407 A CN108905407 A CN 108905407A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- white
- desulphurization denitration
- dedusting
- desulfurization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
- B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/10—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to environmental technology fields, and in particular to a kind of method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing；The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing, the specific steps are dedusting, flue gas activated, flue gas oxidation, desulphurization denitration processing, take off white processing, the standard limit of smog release of smoke discharging pipe discharge is that sulfur dioxide, less than 10 milligrams/cubic metre, is invisible to the naked eye less than 50 milligrams/cubic metre, water mist less than 35 milligrams/cubic metre, nitrogen oxides and visualizes cigarette band；Simple process, it is at low cost, high efficiency realizes that furnace flue gas desulphurization denitration takes off white minimum discharge technology, operating cost is cheap, the furnace flue gas of various concentration heterogeneity can be handled, high-efficient, system can be run under positive pressure or negative pressure, reach minimum discharge flue gas by dedusting, activation, oxidation, desulphurization denitration, de- butter dirt etc., the flue gas of exclusion is not visible cigarette band.
Description
Technical field：
The invention belongs to environmental technology fields, and in particular to a kind of compound flue gas desulfurization and denitrification takes off white minimum discharge processing
Method.
Background technique：
Atmosphere pollution is one of most important environmental problem of our times, and pollutant kind is various, mainly include particulate matter,
Oxysulfide, carbon monoxide, nitrogen oxidation agent, photochemical oxidant etc..To human health, industrial and agricultural production, implements material, dynamic plant
Object growth, social property and global environment etc. can all cause very big injury.The influence of atmosphere pollution be it is global, it is severe
Situation is worth attracting wide public concern and positive participation improvement.
Nitrogen oxide has N2O, NO, NO2, N2O3, N2O4, N2O5 etc. several, and general name nitrogen oxides is often indicated with NOx.
Wherein pollute the mainly NO and NO2 of atmosphere.The NOx naturally occurred from bacterium to the decomposition of itrogenous organic substance and thunder and lightning,
Volcano eruption, forest fire etc., there are about 500,000,000 tons or so every year.About 5,000 ten thousand tons every year of NOx of mankind's activity generation, for the former
1/10.But due to the NOx concentration of anthropogenic discharge height, discharge concentrate, caused by harm it is larger.Mankind's activity discharge
NOx90% or more come from fuel combustion process, such as boiler of power plant, various industrial furnaces, Civil energy-saving cooking stove, motor vehicle and other in
When high temperature combustion of fuel in combustion engine, the N2 and O2 participated in the air of burning can generate NOx；Itrogenous organic substance oxygen in fuel
Change also generates NOx.In addition, some chemical processes, such as NOx is arranged due to absorbing incomplete and equipment leakage in nitric acid production
Enter atmosphere；Various nitrifying process, such as nitrobenzene, nitro explosive, nitro dye production；Tower sulfuric acid, nitrogenous fertilizer, synthetic fibers, oneself
The production processes such as diacid, terephthalic acid (TPA)；The nitric acid treatment process of metal and nonmetallic surface, catalyst manufacture and metal are high
Temperature welding etc. generates a certain number of NOx and is discharged into atmosphere.
The energy of the China based on coal determines the feature of China's atmosphere pollution as coal-smoke pollution.With developed country's phase
Than the existing coal electricity unit equipment general technical level in China falls behind, and coal consumption for power generation is high, and energy utilization rate is low, is further exacerbated by
The discharge of gas caused by coal burning and environmental pollution.Meanwhile coal-burning power plant of China start to walk in terms of NOx emission control compared with
Evening, so that the rapid growth of NOx emission total amount counteracts SO2 control effect fruitful in recent years.If not reinforcing controlling
Reason, the total emission volumn of NOx continue to increase, it could even be possible to becoming most important pollutant in atmosphere more than SO2.
After the 1980s mid-term, with the rapid development of China's power construction, atmosphere and Acid Rain Pollution are increasingly tight
Weight.Especially in recent years, big city NOx is seriously polluted, and regional NOx pollution gradually aggravates；Meanwhile Acid Rain Pollution shows newly
Feature:The relative contribution of NO-3 is increasing, from based on sulfur type to sulfuric acid and the compound transformation of nitric acid.Itself main reason is that
China does not efficiently control the discharge of NOx controlling while SO2 discharge.
The health harm that NOx is polluted to the mankind is larger, and NOx enters the deep of Human Lung by breathing, can cause to prop up
Tracheitis or pulmonary emphysema.NOx can also occur photochemical reaction with other pollutants in atmosphere and form photochemical pollution simultaneously.
NO2 is one of the reason of causing acid rain in an atmosphere through oxidation transformation at nitric acid.NO2 can also be such that ozone in stratosphere reduces, from
And increase the amount of ultraviolet irradiation for reaching the earth.
Western developed country has given sufficient attention to the pollution of NOx in phase late 1960s, numerous and confused to formulate
Stringent discharge standard out, various denitrogenation (denitration) devices come into being, and achieve good effect to the improvement of environment.With
Effective control of SO2, China will also be increasingly stringenter the discharge standard of NOx in future.
It is the current main selective catalytic reduction method of method of denitration (SCR), selective non-catalytic reduction method (SNCR), low
Nitrogen combustion technology, electron beam irradiation method, Ozonation, absorption method and oxidative absorption method.
Desulphurization denitration in existing industry takes off white ultralow dedusting technology disadvantage：Desulphurization denitration is usually using SNCR or SCR
Technology is taken off and white is heated up again technology or electric mist dedusting technology using flue gas cool-down.SNCR requires temperature excessively high (900-1100 DEG C),
Majority reduces furnace temperature using ammonia (or urea) technology is sprayed in furnace, due to spraying into a large amount of low-concentration liquids, causes boiler or stove
Temperature decline.SCR technology is easy poisoning and resistance is big, the later period is difficult to handle waste, causes to ring due to catalyst to be used
The pollution in border, use cost are very high.Take off white technology using cooling heat up again technological investment and operating cost it is huge, general user makes
It can not afford.Ultralow dedusting generally uses electric mist dedusting, and service life, safety economy be not high.So market in urgent need one
Kind, low cost, the low compound desulphurization denitration of operating cost takes off white ultralow dust removal integrated technology.
Based on the analysis to the above problem, a kind of method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing is provided,
Desulphurization denitration can be completed at the same time and take off white, it is low finally to discharge SO 2 from fume, the indexs content such as nitrogen oxides, by DCS from
Autocontrol system control, easy to operate, safety economy is high, reaches flue gas minimum discharge.
Summary of the invention：
In order to overcome the shortcomings in the prior art, present invention offer invented a kind of compound flue gas desulfurization and denitrification take off it is white ultralow
The method of emission treatment, easy to operate, the equipment is different with the content of nitrogen oxides according to different sulfur dioxide in flue gas, flexibly
Chemical oxidation and ion beam ionization technique is applied in combination, the harmful substance in flue gas is activated by ion beam, then passes through chemistry
Method efficiently removes.The white and ultralow dedusting that disappears is carried out to flue gas by high-effect ionic beam, reaches furnace flue gas minimum discharge purpose.
The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing, specific step is as follows：
The first step：Flue gas is passed through bagroom dedusting by dedusting；
Second step：Flue gas after dedusting is passed through whirlwind particle beam apparatus and activated by flue gas activated, and flue gas enters whirlwind
In rotational flow generator in particle beam apparatus, rotational flow generator makes flue gas high speed rotation, and postrotational flue gas enters titanium
In the ion beam generator device of sleeve cathode and sawtooth the anode composition of production, flue gas is ionized by high-speed ion beam, makes flue gas
Particle, which is activated, generates negatively charged and positive charge activating plasma, and wherein ion beam generator power supply is direct current, directly
The voltage of galvanic electricity is 9KV-11KV；
Third step：Flue gas oxidation, the flue gas particle beams after overactivation enter venturi mixing arrangement, mix in venturi
Hydrogen peroxide solution is added in device, is contacted by the hydrogen peroxide that spraying device sprays into the flue gas particle beams after activation, to activation
Flue gas afterwards carries out supplemental oxygen, nitric oxide is fully oxidized to nitrogen dioxide or polyoxygenated nitrogen, the concentration of hydrogen peroxide is
0.05%-1%；
4th step：Desulphurization denitration processing, the flue gas after above-mentioned oxidation is passed through in desulphurization denitration tower, the flue gas after oxidation is molten
Solution carries out desulfurization, the product sodium sulfite or calcium sulfite after desulfurization are again cigarette in the desulfurizing agent NaOH solution into desulfurizing tower
Nitrogen dioxide or polyoxygenated nitrogen in gas are reduced to nitrogen, reach desulphurization denitration purpose, and pass through the vortex in desulphurization denitration tower
Demister carries out demisting, is provided with online PH, TDS detection device in desulphurization denitration tower, by DCS according to pH value and salinity, from
And control the amount and salinity for the NaOH solution being added；
5th step：White processing is taken off, above-mentioned desulphurization denitration is taken off into mist treated flue gas, is passed through whirlwind particle beam apparatus again
It carries out de- mist and takes off white processing, the active particle of a large amount of high-speed motions generated by whirlwind ion beam produces after further removing desulfurization
Raw sulfate aerosol, acid mist, water droplet and dust reaches and takes off white dedusting purpose, the colorless and odorless flue gas after taking off white dedusting from
Smoke discharging pipe discharge, wherein smoke discharging pipe standard limit of smog release is that sulfur dioxide is less than less than 35 milligrams/cubic metre, nitrogen oxides
50 milligrams/cubic metre, water mist are invisible to the naked eye less than 10 milligrams/cubic metre and visualize cigarette band.
Preferably, the circulatory system circulation benefit that desulfurizing agent is made up of glass fibre reinforced plastics cooling tower and circulating water pool in the 4th step
With.
Present invention process is simple, at low cost, and high efficiency realizes that furnace flue gas desulphurization denitration takes off white minimum discharge technology, runs
It is low in cost, the furnace flue gas of various concentration heterogeneity can be handled, high-efficient, system can be run under positive pressure or negative pressure,
Reach minimum discharge flue gas by dedusting, activation, oxidation, desulphurization denitration, de- butter dirt etc., the flue gas of exclusion is not visible cigarette
Band.
Specific embodiment：
Embodiment one：
The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing, specific step is as follows：
The first step：Flue gas is passed through bagroom dedusting by dedusting；
Second step：Flue gas after dedusting is passed through whirlwind particle beam apparatus and activated by flue gas activated, and flue gas enters whirlwind
In rotational flow generator in particle beam apparatus, rotational flow generator makes flue gas high speed rotation, and postrotational flue gas enters titanium
In the ion beam generator device of sleeve cathode and sawtooth the anode composition of production, flue gas is ionized by high-speed ion beam, makes flue gas
Particle, which is activated, generates negatively charged and positive charge activating plasma, and wherein ion beam generator power supply is direct current, directly
The voltage of galvanic electricity is 10KV；
Third step：Flue gas oxidation, the flue gas particle beams after overactivation enter venturi mixing arrangement, mix in venturi
Hydrogen peroxide solution is added in device, is contacted by the hydrogen peroxide that spraying device sprays into the flue gas particle beams after activation, to activation
Flue gas afterwards carries out supplemental oxygen, nitric oxide is fully oxidized to nitrogen dioxide or polyoxygenated nitrogen, the concentration of hydrogen peroxide is
0.5%；
4th step：Desulphurization denitration processing, the flue gas after above-mentioned oxidation is passed through in desulphurization denitration tower, the flue gas after oxidation is molten
Solution carries out desulfurization, the product sodium sulfite or calcium sulfite after desulfurization are again cigarette in the desulfurizing agent NaOH solution into desulfurizing tower
Nitrogen dioxide or polyoxygenated nitrogen in gas are reduced to nitrogen, reach desulphurization denitration purpose, and pass through the vortex in desulphurization denitration tower
Demister carries out demisting, is provided with online PH, TDS detection device in desulphurization denitration tower, by DCS according to pH value and salinity, from
And control the amount and salinity for the NaOH solution being added；
5th step：White processing is taken off, above-mentioned desulphurization denitration is taken off into mist treated flue gas, is passed through whirlwind particle beam apparatus again
It carries out de- mist and takes off white processing, the active particle of a large amount of high-speed motions generated by whirlwind ion beam produces after further removing desulfurization
Raw sulfate aerosol, acid mist, water droplet and dust reaches and takes off white dedusting purpose, the colorless and odorless flue gas after taking off white dedusting from
Smoke discharging pipe discharge, wherein smoke discharging pipe standard limit of smog release is that sulfur dioxide is less than less than 35 milligrams/cubic metre, nitrogen oxides
50 milligrams/cubic metre, water mist are invisible to the naked eye less than 10 milligrams/cubic metre and visualize cigarette band.
Wherein, desulfurizing agent is recycled by the circulatory system that glass fibre reinforced plastics cooling tower and circulating water pool form in the 4th step.
Embodiment two：
The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing, specific step is as follows：
The first step：Flue gas is passed through bagroom dedusting by dedusting；
Second step：Flue gas after dedusting is passed through whirlwind particle beam apparatus and activated by flue gas activated, and flue gas enters whirlwind
In rotational flow generator in particle beam apparatus, rotational flow generator makes flue gas high speed rotation, and postrotational flue gas enters titanium
In the ion beam generator device of sleeve cathode and sawtooth the anode composition of production, flue gas is ionized by high-speed ion beam, makes flue gas
Particle, which is activated, generates negatively charged and positive charge activating plasma, and wherein ion beam generator power supply is direct current, directly
The voltage of galvanic electricity is 9KV-11KV；
Third step：Flue gas oxidation, the flue gas particle beams after overactivation enter venturi mixing arrangement, mix in venturi
Hydrogen peroxide solution is added in device, is contacted by the hydrogen peroxide that spraying device sprays into the flue gas particle beams after activation, to activation
Flue gas afterwards carries out supplemental oxygen, nitric oxide is fully oxidized to nitrogen dioxide or polyoxygenated nitrogen, the concentration of hydrogen peroxide is
0.1%；
4th step：Desulphurization denitration processing, the flue gas after above-mentioned oxidation is passed through in desulphurization denitration tower, the flue gas after oxidation is molten
Solution carries out desulfurization, the product sodium sulfite or calcium sulfite after desulfurization are again cigarette in the desulfurizing agent NaOH solution into desulfurizing tower
Nitrogen dioxide or polyoxygenated nitrogen in gas are reduced to nitrogen, reach desulphurization denitration purpose, and pass through the vortex in desulphurization denitration tower
Demister carries out demisting, is provided with online PH, TDS detection device in desulphurization denitration tower, by DCS according to pH value and salinity, from
And control the amount and salinity for the NaOH solution being added；
5th step：White processing is taken off, above-mentioned desulphurization denitration is taken off into mist treated flue gas, is passed through whirlwind particle beam apparatus again
It carries out de- mist and takes off white processing, the active particle of a large amount of high-speed motions generated by whirlwind ion beam produces after further removing desulfurization
Raw sulfate aerosol, acid mist, water droplet and dust reaches and takes off white dedusting purpose, the colorless and odorless flue gas after taking off white dedusting from
Smoke discharging pipe discharge, wherein smoke discharging pipe standard limit of smog release is that sulfur dioxide is less than less than 35 milligrams/cubic metre, nitrogen oxides
50 milligrams/cubic metre, water mist are invisible to the naked eye less than 10 milligrams/cubic metre and visualize cigarette band.
Wherein, desulfurizing agent is recycled by the circulatory system that glass fibre reinforced plastics cooling tower and circulating water pool form in the 4th step.
Claims (2)
1. the method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing, it is characterised in that：Specific step is as follows：
The first step：Flue gas is passed through bagroom dedusting by dedusting；
Second step：Flue gas after dedusting is passed through whirlwind particle beam apparatus and activated by flue gas activated, and flue gas enters whirlwind particle
In rotational flow generator in bundle device, rotational flow generator makes flue gas high speed rotation, and postrotational flue gas enters titanium production
Sleeve cathode and sawtooth anode composition ion beam generator device in, flue gas is ionized by high-speed ion beam, makes flue gas particle
It is activated and generates negatively charged and positive charge activating plasma, wherein ion beam generator power supply is direct current, direct current
Voltage be 9KV-11KV；
Third step：Flue gas oxidation, the flue gas particle beams after overactivation enters venturi mixing arrangement, in venturi mixing arrangement
Middle addition hydrogen peroxide solution is contacted by the hydrogen peroxide that spraying device sprays into the flue gas particle beams after activation, after activation
Flue gas carries out supplemental oxygen, nitric oxide is fully oxidized to nitrogen dioxide or polyoxygenated nitrogen, wherein the concentration of hydrogen peroxide is
0.05%-1%；
4th step：Desulphurization denitration processing, the flue gas after above-mentioned oxidation is passed through in desulphurization denitration tower, the flue gas after oxidation is dissolved into
In desulfurizing agent NaOH solution in desulfurizing tower, desulfurization is carried out, the product sodium sulfite or calcium sulfite after desulfurization are again in flue gas
Nitrogen dioxide or polyoxygenated nitrogen be reduced to nitrogen, reach desulphurization denitration purpose, and pass through the vortex demisting in desulphurization denitration tower
Device carries out demisting, online PH, TDS detection device is provided in desulphurization denitration tower, by DCS according to pH value and salinity, to control
Make the amount and salinity of the NaOH solution being added；
5th step：White processing is taken off, above-mentioned desulphurization denitration is taken off into mist treated flue gas, whirlwind particle beam apparatus is passed through and carries out again
De- mist takes off white processing, and the active particle of a large amount of high-speed motions generated by whirlwind ion beam, which further removes, to be generated after desulfurization
Sulfate aerosol, acid mist, water droplet and dust reach and take off white dedusting purpose, and the colorless and odorless flue gas after taking off white dedusting is from smoke evacuation
Pipeline discharge, wherein smoke discharging pipe standard limit of smog release be sulfur dioxide less than 35 milligrams/cubic metre, nitrogen oxides less than 50 milli
Gram/cubic metre, water mist are invisible to the naked eye less than 10 milligrams/cubic metre and visualize cigarette band.
2. the method that compound flue gas desulfurization and denitrification according to claim 1 takes off white minimum discharge processing, it is characterised in that：Institute
Desulfurizing agent is recycled by the circulatory system that glass fibre reinforced plastics cooling tower and circulating water pool form in the 4th step stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583391.2A CN108905407A (en) | 2018-06-06 | 2018-06-06 | The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583391.2A CN108905407A (en) | 2018-06-06 | 2018-06-06 | The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108905407A true CN108905407A (en) | 2018-11-30 |
Family
ID=64420171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810583391.2A Pending CN108905407A (en) | 2018-06-06 | 2018-06-06 | The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108905407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251411A (en) * | 2021-05-31 | 2021-08-13 | 国能神东煤炭集团有限责任公司 | Multi-pollutant cooperative control system and method for coal-fired industrial boiler |
| CN115996785A (en) * | 2020-10-08 | 2023-04-21 | Dst株式会社 | Improved method and device for simultaneously removing sulfur oxides and nitrogen oxides contained in exhaust gas |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053748A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof |
| CN101468280A (en) * | 2007-12-28 | 2009-07-01 | 海斯博特（北京）科技有限公司 | Spray tower and electrostatic dust-removing, desulfurizing and denitrating device |
| CN102716648A (en) * | 2012-05-16 | 2012-10-10 | 北京航空航天大学 | Method for automatically controlling desulphurization and denitration by flue gas based on pH value and ORP value and apparatus thereof |
| KR20160030176A (en) * | 2013-07-11 | 2016-03-16 | 고리츠다이가쿠호징 오사카후리츠다이가쿠 | Exhaust gas treatment method, and exhaust gas treatment device |
| CN106693641A (en) * | 2017-01-25 | 2017-05-24 | 浙江环兴机械有限公司 | System integrating with waste heat recovery, dedusting, deodorization, desulfurization, denitration and white smoke removing and treating method of system |
| CN106853327A (en) * | 2016-03-11 | 2017-06-16 | 济南大学 | A kind of method and device of low-temperature flue gas desulfurization and denitrification integral |
| CN107684810A (en) * | 2017-09-06 | 2018-02-13 | 河北环科力创环境工程有限公司 | Flue gas minimum discharge device and application method |
| CN107983126A (en) * | 2018-01-22 | 2018-05-04 | 天津市美好生活科技有限公司 | Incineration flue gas minimum discharge purifying treatment method and its processing system |
-
2018
- 2018-06-06 CN CN201810583391.2A patent/CN108905407A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053748A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof |
| CN101468280A (en) * | 2007-12-28 | 2009-07-01 | 海斯博特（北京）科技有限公司 | Spray tower and electrostatic dust-removing, desulfurizing and denitrating device |
| CN102716648A (en) * | 2012-05-16 | 2012-10-10 | 北京航空航天大学 | Method for automatically controlling desulphurization and denitration by flue gas based on pH value and ORP value and apparatus thereof |
| KR20160030176A (en) * | 2013-07-11 | 2016-03-16 | 고리츠다이가쿠호징 오사카후리츠다이가쿠 | Exhaust gas treatment method, and exhaust gas treatment device |
| CN106853327A (en) * | 2016-03-11 | 2017-06-16 | 济南大学 | A kind of method and device of low-temperature flue gas desulfurization and denitrification integral |
| CN106693641A (en) * | 2017-01-25 | 2017-05-24 | 浙江环兴机械有限公司 | System integrating with waste heat recovery, dedusting, deodorization, desulfurization, denitration and white smoke removing and treating method of system |
| CN107684810A (en) * | 2017-09-06 | 2018-02-13 | 河北环科力创环境工程有限公司 | Flue gas minimum discharge device and application method |
| CN107983126A (en) * | 2018-01-22 | 2018-05-04 | 天津市美好生活科技有限公司 | Incineration flue gas minimum discharge purifying treatment method and its processing system |
Non-Patent Citations (5)
| Title |
|---|
| 倪哲明: "《新编大学化学》", 31 December 2014, 浙江大学出版社 * |
| 张其仔等: "《新兴产业和高新技术现状与前景研究丛书 环保产业现状与发展前景》", 31 May 2015, 广东经济出版社 * |
| 王军成: "《气象水文海洋观测技术与仪器发展报告 2016 水文篇》", 30 September 2017, 西南交通大学出版社 * |
| 邓海波，高志勇: "《矿物加工过程检测与控制技术》", 31 January 2017, 冶金工业出版社 * |
| 黄民生: "《节能环保产业》", 30 June 2014, 上海科学技术文献出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115996785A (en) * | 2020-10-08 | 2023-04-21 | Dst株式会社 | Improved method and device for simultaneously removing sulfur oxides and nitrogen oxides contained in exhaust gas |
| CN115996785B (en) * | 2020-10-08 | 2024-02-02 | Dst株式会社 | Improved method and device for simultaneously removing sulfur oxides and nitrogen oxides contained in exhaust gas |
| CN113251411A (en) * | 2021-05-31 | 2021-08-13 | 国能神东煤炭集团有限责任公司 | Multi-pollutant cooperative control system and method for coal-fired industrial boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102343212B (en) | Denitration process combining co-oxidation of ozone and hydrogen peroxide with wet absorption | |
| CN104801178B (en) | Method for simultaneously desulfurizing, denitrifying and removing mercury by combining radical pre-oxidation with wet absorption | |
| CN106693641A (en) | System integrating with waste heat recovery, dedusting, deodorization, desulfurization, denitration and white smoke removing and treating method of system | |
| CN106853327B (en) | Low-temperature flue gas desulfurization and denitrification integrated method and device | |
| CN104923072A (en) | Hydrogen sulfide removal method based on photocatalytic spraying | |
| CN109045958A (en) | The equipment for denitrifying flue gas and method of urea and dioxygen water mixed liquid combination SNCR | |
| CN104801160A (en) | Method for reducing nitrogen oxides in flue gas of medium and small sized industrial coal burning boiler through combination with wet-method sulfur removing technology | |
| CN110385038A (en) | A kind of flue gas purifying method that photochemical catalytic oxidation combination Two-way Cycle absorbs | |
| CN113941238A (en) | Integrated control method for low-temperature smoke pollutants | |
| CN104998539A (en) | Dry flue gas desulfurization, denitrification and dedusting integrated purification process | |
| CN104474858A (en) | Flue gas desulfurization and denitrification method and device and application of flue gas desulfurization and denitrification device | |
| CN108905407A (en) | The method that compound flue gas desulfurization and denitrification takes off white minimum discharge processing | |
| CN205308112U (en) | Ozone and device of air in coordination with nitrogen oxide in oxidation flue gas | |
| CN111036075A (en) | Method for treating high-concentration nitrogen oxide flue gas | |
| CN205073858U (en) | DeNOx systems is united with oxidation to reduction | |
| CN110090538A (en) | A kind of oxyradical wet process of FGD method of denitration | |
| CN108905541A (en) | A kind of method of microwave plasma decomposition NO | |
| CN106853329B (en) | Method and device for generating hydroxyl free radical by ozone for low-temperature flue gas denitration | |
| CN205032080U (en) | Dry -type flue gas desulfurization denitration dust removal integration clean system | |
| CN104923061B (en) | Hydrogen sulfide removal method based on photochemical free radicals | |
| CN111111401A (en) | Harmless and efficient treatment method for nitrogen oxides in industrial waste gas | |
| CN106925117A (en) | The removing means and method of nitrate in a kind of industrial tail gas oxidation and denitration recirculated water | |
| CN211987967U (en) | Sintering flue gas desulfurization and denitrification system | |
| CN205570056U (en) | Device of low temperature flue gas desulfurization denitration integration | |
| CN204768202U (en) | Flue gas desulfurization denitration dust removal integration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |