CN108434939A - A kind of mud Emulphors turbid reinforcing phosphate ore pulp liquid phase denitration new technology - Google Patents
A kind of mud Emulphors turbid reinforcing phosphate ore pulp liquid phase denitration new technology Download PDFInfo
- Publication number
- CN108434939A CN108434939A CN201711382304.9A CN201711382304A CN108434939A CN 108434939 A CN108434939 A CN 108434939A CN 201711382304 A CN201711382304 A CN 201711382304A CN 108434939 A CN108434939 A CN 108434939A
- Authority
- CN
- China
- Prior art keywords
- mud
- ore pulp
- emulphors
- phosphate ore
- turbid
- 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
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention discloses a kind of mud Emulphors turbid reinforcing phosphate ore pulp liquid phase denitration new technology, is induced using mud phosphorus and oxygen and generates ozone as oxidant, cooperateed with phosphate ore pulp catalysis oxidation, NO is oxidized to NO soluble easily in water2With a small amount of N2O5And absorbed by absorbing liquid, liquid phase denitration efficiency can be effectively improved.This method using mud Emulphors turbid and phosphate ore pulp as absorbing liquid, and with the NO in flue gasXIt reacts.It is 0.25g/mL in phosphate ore pulp solid-to-liquid ratio, mud phosphorus addition is 2g, and operation temperature is 60 DEG C, airflow rate 0.3L/min, and oxygen content is that the time that denitration efficiency maintains 87% is 240 minutes under 20% reaction condition.Simple in this method technical process, investment is small, easy to operate, and secondary pollution is small, can be used for NO in thermal power plant's tail gasXRemoving.
Description
Technical field
The present invention relates to mud Emulphors turbids to combine phosphate ore pulp liquid phase denitration new technology, belongs to atmosphere pollution purification techniques neck
Domain.
Background technology
Nitrogen oxides（NOX）It is one of the major pollutants in China's air, the discharge capacity of industrial nitrogen oxides accounts for the whole nation
The 63.8% of nitrogen oxide emission, and in recent years, with the growth of China's economy and the development of power industry, coal-fired industry production
Raw NOXAlso increasing, China's atmosphere pollution faces severe situation.And the NO properties in exhaust gas are stablized, and are insoluble in water, pole
Difficulty is removed, this is exactly the difficult point place of denitrating flue gas.
Denitration technology is to NO after burningXIt is de- can be divided into dry method, wet method two major classes and dry method for the most important measure of control
Nitre is compared, and wet denitration has many advantages, such as that investment is low, secondary pollution is small, is the important directions of denitration technology development, includes mainly
Gas-phase reaction method, liquid phase scrubbing method, oxidative absorption method, electronic beam method, absorption method, liquid-film method, microbial method etc., at present research compared with
More method of denitration is selective catalytic reduction（SCR）With selective non-catalytic reduction method（SNCR）, but since raw material is high
It is expensive, investment is big, catalyst inactivation and the escaping of ammonia, the shortcomings of generating secondary pollution, be not the optimal selection of denitration.Liquid phase scrubbing
Method has preferable foreground, although there is phosphate ore pulp liquid phase catalytic oxidation denitration technology feasibility, its denitration efficiency to carry
The space risen, needs improved technology to make every effort to accomplish zero-emission.By Lawrence Berkeley National laboratory（Lawrence
Berkeley Laboratory）Develop the PhoSNO proposedXMethod removes NO using the yellow phosphorus emulsion containing alkaliX, but China lacks
Weary high-grade phosphorus ore, the method are difficult to be used widely in China.Mud phosphorus is similar to yellow phosphorus ingredient, contains element phosphor and other
Impurity（SiO2、CaO、C、Fe2O3、Al2O3Deng）, therefore the theoretically ability with flue gas desulfurization and denitrification, therefore by phosphorus ore
In slurry be added mud Emulphors turbid, by PhoSNOX methods with phosphate ore pulp liquid phase catalytic oxidation denitration technology be combined probe into it is new and effective
Denitration technology, the method are suitble to China's national situation, low, efficient, byproduct recycling the wet denitration technology of small investment, operating cost
It is more in line with the theory of Green Chemistry.
Chinese patent CN106178891A discloses a kind of flue gas wet denitration method and device, using ultraviolet irradiation
NaClO2Solution can improve denitration efficiency, reduce NaClO2Dosage can be realized preferable in wide pH value range
Denitration effect, the waste liquid after washing can be discharged to the external world after treatment.It can also recycle, be suitable for different occasions, have
Conducive to the transformation of existing equipment.But this method cost is slightly higher, and new substance can be introduced, it is not suitable for the net of industrial waste gas
Change.
In the integrated apparatus and method of a kind of flue gas low-temperature denitration disclosed in Chinese patent CN107051168A, main profit
It uses hydrogen peroxide as oxidant, reduces investment and operation cost, there is high oxidation to imitate the nitrogen oxides in low-temperature flue gas
Rate.But using hydrogen peroxide as oxidant, denitration is carried out under low temperature condition, needs strict temperature control, cost big.
In a kind of flue gas wet denitration device and flue gas wet denitration method disclosed in Chinese patent CN106377987A,
NO is oxidized to NO by bubbling bed oxide layer2, then through lye absorption tower absorption NO2Denitration though denitration efficiency is high, however is tested
Device is complex, and cost is too high, and trivial operations, is unfavorable for using manpower and material resources sparingly.
In conclusion process equipment and process control needed for the present invention are simple, are conducive to save man power and material, be used
Phosphate ore pulp and mud phosphorus simplicity be easy to get, can reach the regeneration of resource, substantially reduce enterprise's pollution treatment cost, and in operating process not
Secondary pollution is generated, there is higher economy, environmental benefit.Therefore, the present invention has important practical advice meaning, is more suitable for
It promotes.
Invention content
The technical problem to be solved in the present invention is to provide mud Emulphors turbids to combine phosphate ore pulp liquid phase denitration new technology.
In the present invention mud Emulphors turbid joint phosphate ore pulp liquid phase denitration new technology its specific steps are：
NO, SO of concentration needed for the operation are prepared in experiment using static volumetric method2With the simulated flue gas of oxygen content（Using from steel
The NO gases of bottle（Volume fraction 0.08%, N2Make Balance Air）And SO2Gas（A concentration of 0.08%）And dry air presses certain ratio
Example is filled such as airbag, is uniformly mixed.）；
Gas circuit is connected according to attached drawing, checks air-tightness；Be switched on preheater apparatus, adjusts the temperature parameter of water-bath, for use；
Ground phosphate rock and mud phosphorus accurately are weighed, is configured to test the phosphate ore pulp absorbing liquid of required solid-to-liquid ratio with distilled water and mud Emulphors is turbid
Liquid；
Gas circuit is connected according to attached drawing, checks air-tightness；
Be switched on preheater apparatus, adjusts the temperature parameter of water-bath；
Absorbing liquid is placed in water-bath；To temperature to preset temperature, ventilatory response starts, and starts timing, measures gas outlet
Tail gas（It is measured using German Yikang J2KN type flue gas analyzers）；
It after absorption, stops the supple of gas or steam, measures the pH of absorbing liquid；Calculate denitration efficiency
Description of the drawings
Fig. 1 is the experiment flow figure of this operating method.
Specific implementation mode
In order to better illustrate and implement, elaborate to the present invention below by specific implementation example.
Embodiment 1
Using the phosphorus ore of phosphate fertilizer plant of Yunnan Province at 110 DEG C, 2h is dried, phosphorus ore attrition grinding is sieved to obtain 200 mesh fine graineds, accurately
The phosphorus ore of 10g is weighed in absorption bottle, addition 40mL distilled water is made into phosphate ore pulp；Mud phosphorus 4g accurately is weighed, is configured to emulsion,
It is uniformly mixed with phosphate ore pulp, it is 2 to be configured to mud phosphorus with phosphorus ore quality ratio:5 absorbing liquid；Absorption plant is placed in thermostat water bath
Interior, temperature is controlled at 60 DEG C, configures NO gases（Volume fraction 0.08%, N2Make Balance Air）A concentration of 500ppm blasts dry sky
Gas；Airflow rate is 0.3 L/min, carries out experimental implementation under this condition and reacts 250min.It is surveyed with flue gas analyzer to go out
Mouth NO contents, calculate removal efficiency, denitrification rate is up to 87% time sustainable 240min.
Embodiment 2
Using the phosphorus ore of phosphate fertilizer plant of Yunnan Province at 110 DEG C, 2h is dried, phosphorus ore attrition grinding is sieved to obtain 200 mesh fine graineds, accurately
The phosphorus ore of 5g is weighed in absorption bottle, addition 20mL distilled water is made into phosphate ore pulp；Mud phosphorus 2g accurately is weighed, is configured to emulsion,
It is uniformly mixed with phosphate ore pulp, it is 2 to be configured to mud phosphorus with phosphorus ore quality ratio:5 absorbing liquid；Absorption plant is placed in thermostat water bath
Interior, temperature is controlled at 60 DEG C, configures NO gases（Volume fraction 0.08%, N2Make Balance Air）A concentration of 500ppm blasts dry sky
Gas；Airflow rate is 0.3 L/min, carries out experimental implementation under this condition and reacts 250min.It is surveyed with flue gas analyzer to go out
Mouth NO contents, calculate removal efficiency, denitrification rate is up to 89% time sustainable 246min.
Claims (9)
1. a kind of mud Emulphors turbid combines phosphate ore pulp liquid phase denitration new technology, it is characterised in that implement according to the following steps：Experiment is adopted
The concentration that simulation industrial smoke is prepared with static volumetric method, accurately weighs ground phosphate rock and mud phosphorus, and experiment institute is configured to distilled water
Need the phosphate ore pulp absorbing liquid and mud Emulphors turbid of solid-to-liquid ratio；Gas circuit is connected according to experimental provision flow chart, checks air-tightness；It opens
Machine preheater apparatus adjusts the temperature parameter of water-bath；Absorbing liquid is placed in water-bath；To temperature to preset temperature, ventilation is instead
It should start, and start timing, measure gas outlet tail gas；It after to be absorbed, stops the supple of gas or steam, measures the pH of absorbing liquid；Calculate denitration effect
Rate.
2. combining phosphate ore pulp liquid phase denitration new technology according to mud Emulphors turbid described in claim 1, it is characterised in that operation
Optimum solid-to-liquid ratio is 0.25g/mL；Optimum mud phosphorus addition is 2g；Optimum operation temperature is 60 DEG C；Optimum
Airflow rate be 0.3L/min；Optimum oxygen content is 20%, to save cost, is blasted using dry air.
3. mud Emulphors turbid according to claim 1 combines phosphate ore pulp liquid phase denitration new technology, it is characterised in that absorbing
Mud phosphorus is added in liquid to strengthen phosphate ore pulp denitration effect, mud phosphorus is 2 with the more suitable mass ratio of phosphorus ore addition:5.
4. mud Emulphors turbid according to claim 1 combines phosphate ore pulp liquid phase denitration new technology, it is characterised in that reaction behaviour
The solid-to-liquid ratio of work is 0.025 ~ 0.25 g/mL.
5. mud Emulphors turbid according to claim 1 combines phosphate ore pulp liquid phase denitration new technology, it is characterised in that reaction behaviour
The mud phosphorus addition of work is 0 ~ 4 g.
6. mud Emulphors turbid according to claim 1 combines phosphate ore pulp liquid phase denitration new technology, it is characterised in that reaction behaviour
It is 25 DEG C ~ 80 DEG C to make temperature.
7. mud Emulphors turbid according to claim 1 combines phosphate ore pulp liquid phase denitration new technology, it is characterised in that reaction behaviour
The airflow rate of work is 0.1 ~ 0.5 L/min.
8. according to claim 1 state mud Emulphors turbid combine phosphate ore pulp liquid phase denitration new technology, it is characterised in that reaction behaviour
The oxygen content of work is 0 ~ 30%.
9. mud Emulphors turbid according to claim 1 combines phosphate ore pulp liquid phase denitration new technology, it is characterised in that industrial cigarette
A concentration of 500 ppm of NO in gas, powder particle size used are 200 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382304.9A CN108434939A (en) | 2017-12-20 | 2017-12-20 | A kind of mud Emulphors turbid reinforcing phosphate ore pulp liquid phase denitration new technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382304.9A CN108434939A (en) | 2017-12-20 | 2017-12-20 | A kind of mud Emulphors turbid reinforcing phosphate ore pulp liquid phase denitration new technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108434939A true CN108434939A (en) | 2018-08-24 |
Family
ID=63190703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711382304.9A Pending CN108434939A (en) | 2017-12-20 | 2017-12-20 | A kind of mud Emulphors turbid reinforcing phosphate ore pulp liquid phase denitration new technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108434939A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675426A (en) * | 2018-12-06 | 2019-04-26 | 昆明理工大学 | It is a kind of using ground phosphate rock and mud phosphorus to the system and method for flue gas desulfurization and denitrification and by-product nitrophosphate fertilizer |
| CN110102180A (en) * | 2019-06-21 | 2019-08-09 | 云南民族大学 | A kind of method of mud Emulphors turbid liquid phase catalytic oxidation simultaneous SO_2 and NO removal |
| CN111495165A (en) * | 2020-06-05 | 2020-08-07 | 昆明理工大学 | Magnesium-containing ore desulfurization and denitrification slurry and synchronous desulfurization and denitrification method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536493A (en) * | 2015-12-28 | 2016-05-04 | 昆明理工大学 | Method for removing SO2 and NOX from flue gas of coal-fired boiler by virtue of phosphoric ore pulp and phosphorus sludge |
-
2017
- 2017-12-20 CN CN201711382304.9A patent/CN108434939A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536493A (en) * | 2015-12-28 | 2016-05-04 | 昆明理工大学 | Method for removing SO2 and NOX from flue gas of coal-fired boiler by virtue of phosphoric ore pulp and phosphorus sludge |
Non-Patent Citations (1)
| Title |
|---|
| 中国环境科学学会编: "《中国环境保护优秀论文集 2005 下》", 30 June 2005, 中国环境科学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675426A (en) * | 2018-12-06 | 2019-04-26 | 昆明理工大学 | It is a kind of using ground phosphate rock and mud phosphorus to the system and method for flue gas desulfurization and denitrification and by-product nitrophosphate fertilizer |
| CN110102180A (en) * | 2019-06-21 | 2019-08-09 | 云南民族大学 | A kind of method of mud Emulphors turbid liquid phase catalytic oxidation simultaneous SO_2 and NO removal |
| CN111495165A (en) * | 2020-06-05 | 2020-08-07 | 昆明理工大学 | Magnesium-containing ore desulfurization and denitrification slurry and synchronous desulfurization and denitrification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104888806B (en) | A kind of regeneration method that inactivation vanadium titanium-based Faveolate denitration catalyst combined denitration demercuration is modified | |
| CN110327774B (en) | Dry-process low-temperature desulfurization and denitrification integrated catalytic absorbent and preparation and application thereof | |
| CN102908883B (en) | A kind of flue gas and desulfurizing and denitrifying method | |
| CN107715845A (en) | A kind of flue gas desulfurization and denitrification adsorbent and its preparation and application | |
| CN108434939A (en) | A kind of mud Emulphors turbid reinforcing phosphate ore pulp liquid phase denitration new technology | |
| Liu et al. | A novel double metal ions-double oxidants coactivation system for NO and SO2 simultaneous removal | |
| CN102836636B (en) | Desulfurization denitration composition, preparation method and application thereof | |
| Wang et al. | Effects of sintering flue gas properties on simultaneous removal of SO2 and NO by ammonia-Fe (II) EDTA absorption | |
| CN106237851A (en) | A kind of utilize ozone to carry out SCR denitration to carry the System and method for of effect | |
| CN110508236A (en) | A kind of microwave cooperating processing waste residue prepares high-efficiency sintered flue gas adsorbent and method | |
| Zhang et al. | Effects of slurry properties on simultaneous removal of SO2 and NO by ammonia-Fe (II) EDTA absorption in sintering plants | |
| CN106732531A (en) | A kind of SCR denitration and its production and use | |
| CN104524935A (en) | Single-tower type double-circulation sprinkling composite absorption device and method | |
| CN106582236A (en) | Method and device for combined removal of SO2/NOx/PM2.5/Hg in coal-fired smoke | |
| CN105396626B (en) | A kind of regeneration method of SCR denitration regenerated liquid and SCR denitration | |
| CN108479744A (en) | A kind of preparation method and applications of desulphurization catalyst | |
| CN103432879B (en) | The method of the ferrous flue gas desulfurization and denitrification of hypergravity complexing | |
| CN107551801A (en) | A kind of v-bearing steel slag purifies SO2The method that flue gas and sulphur, vanadium resource utilize | |
| CN204247052U (en) | Single tower type double-cycle spray composite absorption device | |
| CN109173669A (en) | A method of purification yellow phosphoric tail gas | |
| CN102908896B (en) | Method for catalytically oxidizing NO by dielectric barrier discharge plasma modified catalyst | |
| CN105457464B (en) | A kind of technique of sintering flue gas desulfurization denitration | |
| CN109939540A (en) | A kind of flue gas processing method and processing unit | |
| CN108434977A (en) | A kind of method of phosphate ore pulp liquid phase catalytic oxidation simultaneous SO_2 and NO removal | |
| CN106310932B (en) | A kind of method that phosphate ore pulp liquid phase catalytic oxidation removes NO in industrial waste gas |
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 |
Application publication date: 20180824 |
|
| RJ01 | Rejection of invention patent application after publication |