CN105536501A - Regeneration method for ferric chloride for denitration - Google Patents
Regeneration method for ferric chloride for denitration Download PDFInfo
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- CN105536501A CN105536501A CN201610021099.2A CN201610021099A CN105536501A CN 105536501 A CN105536501 A CN 105536501A CN 201610021099 A CN201610021099 A CN 201610021099A CN 105536501 A CN105536501 A CN 105536501A
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- 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
- B01D53/565—Nitrogen oxides by treating the gases with solids
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention provides a regeneration method for ferric chloride for denitration and belongs to the technical field of air pollution control and environmental protection. The treatment process of the method comprises the steps that ferric chloride solid particles and nitrogen oxide in air flow are subjected to a chemical reaction in a gas-solid reaction tower to generate a solid product, the solid product is guided into a ferric chloride regeneration furnace, in protection atmosphere of inert gas like nitrogen, the solid product is heated after being vacuumized, absorbed nitrogen oxide is released, hydrogen chloride gas is introduced into the ferric chloride furnace further, ferric oxide and ferric oxide chloride in the solid product are converted into ferric chloride, the purpose of regenerating ferric chloride is achieved, nitric acid can be recovered, and the ferric regeneration furnace can be gasification furnace for preparing ferric chloride particles for denitration. The regeneration method has the advantages of being low in investment cost and operation cost, easy to operate, high in treatment efficiency and large in treatment capacity.
Description
Technical field
The present invention relates to a kind of renovation process of denitration iron chloride, belong to Air Pollution Control and relevant environment resist technology field.
Background technology
Nitrogen oxide (the NO that mankind's activity produces
x) mainly comprise NO and NO
2, what wherein produced by fuel combustion accounts for more than 90%, is secondly nitric acid production, the nitration reaction of chemical pharmaceutical, the industrial process such as metal surface and semiconductor processes.NO
xhave intoxicating effect to people, a large amount of discharged nitrous oxides still causes the one of the main reasons of atmospheric photochemistry mist and acid rain.China Environmental State Bulletin statistics shows that the contribution of nitrogen oxide in China's Urban Acid Rain is in continuous increase, and the Acid Rain Pollution character in some places has started by sulfuric acid type to the ever-increasing compound conversion of nitrate ion (national environmental protection portion: China Environmental State Bulletin in 2010).In recent years, country has newly formulated some new laws, regulation, and the nitrogen oxide of the nitrogen oxide particularly combustion process such as thermoelectricity discharge has been made to stricter control and reduced discharging regulation.
Usually, the nitrous oxides concentration in the flue gas that thermal power plant etc. produce with combustion of fossil fuel is about hundreds of to several thousand ppm, and wherein more than 90% is nitric oxide.Current selective catalysis conversion method (SCR) administers flue gas NO at present
xone of Main Means, but catalyst requires strict to service condition, need ammonia as reducing agent, very large, particularly very high to the operating cost of the thermal power plant taking coal as fuel to the aging effects of catalyst containing sulfide and dust etc. in air-flow; Wet method is the NO adopting solution to produce various industrial process
xabsorb, be the main method of discharged at lower temperature source process, mainly contain oxidative absorption method and reducing absorping method two kinds, wherein, oxidizing process adopts ozone, hydrogen peroxide and clorox etc. as oxidative absorption agent, carries out absorption process; Reducing process adopts sodium sulfite, vulcanized sodium and urea etc. as reducing agent, carries out absorption process.But to containing the more nitrogen oxide of nitric oxide, because nitric oxide solubility is in the solution very little, absorption efficiency is lower, and medicament is more expensive, and operating cost is high.Therefore, the new purification of nitrogen oxides of exploitation and treatment technology is badly in need of.
The object of this invention is to provide a kind of renovation process of denitration iron chloride, for removing nitrogen oxide from air-flow.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of denitration iron chloride renovation process, the regeneration of the solid product generated for the nitrogen oxide generation chemical reaction in iron chloride solid particle in gas-solid reaction tower and air-flow, and recyclable nitric acid.
Another technical problem to be solved by this invention is to provide the special purpose device of above-mentioned denitration iron chloride renovation process, has easy to operate, that treatment effeciency is high, treating capacity is large feature.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of renovation process of denitration iron chloride, it is characterized in that the solid product that the nitrogen oxide generation chemical reaction in iron chloride solid particle in gas-solid reaction tower and air-flow is generated imports iron chloride regenerating furnace, uniform temperature is heated in vacuum or inert gas shielding atmosphere, discharge by the nitrogen oxide of reactive absorption, solid product is made again to be converted into iron chloride, after absorbed nitrogen oxide releases, hydrogen chloride gas is imported again to iron chloride regenerating furnace, the iron oxide that contains in solid product and FeOCl etc. are made to transform iron chloride, thus reach the object of regeneration.
The gas-solid contact reactor that described iron chloride regenerating furnace version can adopt chemical engineering unit operation conventional, as fixed bed, ebullated bed, thermopnore, the reactor such as recirculating fluidized bed or moving bed, also the churned mechanically reactor of band can be adopted, sequence can be adopted to criticize and to feed intake and continuous dosing mode, specifically can referring to chemical reaction relevant device handbook, effect is about the same.The fixed bed vertical reactor fed intake is criticized for sequence, described regenerating furnace is provided with described solid product and adds entrance, inert gas import (hydrogen chloride gas import), oxides of nitrogen gas outlet (or vacuum orifice) and gaseous state iron chloride outlet etc.
Regeneration furnace pressure is generally normal pressure or negative pressure (vacuum), and the heating temperature range of solid product described under normal pressure is generally more than 75 DEG C, and preferred range is 95 DEG C-350 DEG C, and under negative pressure, heating-up temperature can be lower.Actual mechanical process, heating-up temperature is high, and described solid product decomposition rate is fast, and heating can adopt the multiple means such as electrical heating, heat-conducting medium heating, Electromagnetic Heating or heating using microwave, and effect is suitable.The nitrogen oxide that described solid product regenerative process discharges prepares nitric acid by the mode of oxidative absorption, related industries technology maturation, specifically can referring to relevant chemical industry handbook.After the nitrogen oxide absorbed until solid product all discharges, import hydrogen chloride gas to regenerating furnace further, make the materials such as the iron oxide in solid product and FeOCl and hydrogen chloride gas react and be converted into iron chloride.Chlorine hydride gas concentration (volume ratio, carrier gas is inert gas) be generally 0.05%-100%, can according to the setting parameter such as structure of reactor, operating condition, the reaction of concentration height is fast, when being mobile phase to gas, the preferred 1%-30% of chlorine hydride gas concentration.Under normal pressure, the reaction temperature of iron oxide and FeOCl and hydrogen chloride gas is generally more than normal temperature, preferred range is 30 DEG C-350 DEG C, reaction temperature is higher to be conducive to reaction and to carry out, but when reaction temperature is higher, when being more than 95 DEG C under normal pressure, distillation is gaseous state iron chloride by iron chloride, then by obtaining solid chlorine iron after condensation.Inert gas of the present invention is the gas not participating in reacting, as nitrogen or argon gas or carbon dioxide etc.
For the Substance Transformations such as the iron oxide in quickening solid product and FeOCl are the course of reaction of iron chloride, also after all can discharging until the nitrogen oxide in solid product, in regenerating furnace, add concentrated hydrochloric acid, can make in solid product submergence concentrated hydrochloric acid, pass into hydrogen chloride gas again, other processes are constant.Described concentrated hydrochloric acid concentration is generally more than 5%, and concentration is higher, reacts faster.
The solid chlorine iron that the renovation process of a kind of denitration iron chloride of the present invention obtains can directly import gas-solid reaction tower, reacts with the nitrogen oxide in air-flow, also can prepare denitration iron chloride solid particle after gasification.Described iron chloride regenerating furnace can use as the gasification furnace of preparation denitration iron chloride solid particle, and the technical process of preparation denitration iron chloride solid particle can referring to another application for a patent for invention of present invention applicant.Using regenerating furnace simultaneously as when preparing the gasification furnace of iron chloride solid particle, the top of described regenerating furnace is also provided with tube connector and is communicated with cooler, described tube connector is also provided with inert gas carrier import, described cooler is communicated with gas-solid reaction tower by iron chloride solid particle discharge pipe, and described gas-solid reaction tower is provided with processed gas feed and the rear gas vent of purification.Gasification furnace pressure is normal pressure or negative pressure, and under normal pressure, heating temperature range is generally greater than 95 DEG C, and preferred range is 150 DEG C-350 DEG C.
The gas-solid haptoreaction equipment such as fixed bed, moving bed, ebullated bed, fluid bed and recirculating fluidized bed that gas-solid reaction tower of the present invention can adopt chemical engineering unit operation conventional, the various ways such as following current, adverse current and cross-flow can be adopted, specifically can referring to chemical reaction relevant device handbook, effect is about the same, also can referring to another application for a patent for invention of present invention applicant.Range of reaction temperature under described iron chloride solid particle and the normal pressure of nitrogen oxide in gas-solid reaction tower is generally 25 DEG C-95 DEG C.
The invention has the advantages that: the solid product that the nitrogen oxide generation chemical reaction in iron chloride solid particle in gas-solid reaction tower and air-flow is generated imports iron chloride regenerating furnace; heat in the inert gas shielding atmosphere such as nitrogen or after vacuumizing; discharge absorbed nitrogen oxide; hydrogen chloride gas is imported further to regenerating furnace; make the Substance Transformation iron chloride such as iron oxide and FeOCl in solid product; thus reach the object of iron chloride regeneration, and recyclable nitric acid.Described iron chloride regenerating furnace also can use as the gasification furnace of preparation denitration iron chloride particle, can be recycled after iron chloride regeneration, has cost of investment and operating cost is low, simple to operate, treatment effeciency is high, the feature that treating capacity is large.
Accompanying drawing explanation
Fig. 1 is the fixed bed device schematic diagram of the renovation process of the embodiment of the present invention a kind of denitration iron chloride used.Wherein: 1 iron chloride regenerating furnace; 2 inert gas imports (or hydrogen chloride gas import); 3 web plates; 4 solid products add entrance; 5 oxides of nitrogen gas outlets (or vacuum orifice); 6 gaseous state iron chloride outlets; 7 access holes.
Fig. 2 is that the embodiment of the present invention a kind of denitration iron chloride regenerating furnace used is as the device schematic diagram preparing iron chloride solid particle gasification furnace.Wherein: 1 iron chloride regenerating furnace; 2 inert gas imports (or hydrogen chloride gas import); 3 web plates; 4 solid products add entrance; 5 oxides of nitrogen gas outlets (or vacuum orifice); 6 gaseous state iron chloride outlets; 7 access holes; 8 carrier gas inlet; 9 coolers; 10 iron chloride solid particle discharge pipes; 11 gas-solid reaction towers; Gas vent after 12 purifications; 13 processed gas feeds; Solid particle outlet after 14 reactions.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of fixed bed device schematic diagram of renovation process of described denitration iron chloride as shown in Figure 1.The bottom of the iron chloride regenerating furnace (1) of described device is provided with inert gas import (or hydrogen chloride gas import) (2), be provided with solid product on the top of body of heater and add entrance (4), oxides of nitrogen gas outlet (or vacuum orifice) (5) and gaseous state iron chloride outlet (6), be provided with web plate (3) in stove for placing described solid product, bottom is also provided with access hole (7).
Processing technological flow first adds entrance (4) by solid product on iron chloride regenerating furnace (1) interior web plate (3), add solid product after denitration reaction, then the air (being filled with inert gas after also first can vacuumizing removing air) in nitrogen or the inert gas replacement such as argon gas or carbon dioxide regenerating furnace is filled with by inert gas import (or hydrogen chloride gas import) (2), in regenerating furnace, in inert gas shielding atmosphere, (or vacuumizing) is heated to uniform temperature, absorbed nitrogen oxide is discharged by oxides of nitrogen gas outlet (or vacuum orifice) (5), solid product is made again to be converted into iron chloride, after treating absorbed discharged nitrous oxides, hydrogen chloride gas is imported to regenerating furnace again by inert gas import (or hydrogen chloride gas import) (2), make the Substance Transformation iron chloride such as iron oxide and FeOCl contained in solid product, if when in-furnace temperature is greater than 95 DEG C, distillation is gaseous state by iron chloride, can be discharged by gaseous state iron chloride outlet (6), solid chlorine iron is obtained again after condensation.
For the Substance Transformations such as the iron oxide in quickening solid product and FeOCl are the course of reaction of iron chloride, also after all can discharging until the nitrogen oxide in solid product, add after entrance (4) adds concentrated hydrochloric acid in iron chloride regenerating furnace (1) by solid product, solid product is made to be immersed in concentrated hydrochloric acid, import hydrogen chloride gas by inert gas import (or hydrogen chloride gas import) (2) to regenerating furnace again, other operating process are the same.
A kind of described denitration iron chloride regenerating furnace as iron chloride solid particle gasification furnace fixed bed device schematic diagram as shown in Figure 2.The bottom of the iron chloride regenerating furnace (1) of described device is provided with inert gas import (or hydrogen chloride gas import) (2), be provided with solid product on the top of body of heater and add entrance (4), oxides of nitrogen gas outlet (or vacuum orifice) (5) and gaseous state iron chloride outlet (6), web plate (3) is provided with for placing described solid product in stove, bottom is also provided with access hole (7), gaseous state iron chloride outlet (6) is communicated with cooler (9) by tube connector, described tube connector is also provided with carrier gas inlet (8), described cooler (9) is communicated with gas-solid reaction tower (11) by iron chloride solid particle discharge pipe (10), described gas-solid reaction tower (11) is provided with processed gas feed (13) and the rear gas vent (12) of purification, described gas-solid reaction tower bottom is also provided with the rear solid product outlet (14) of reaction.
Described denitration iron chloride regenerating furnace is consistent with the device technique flow process of the renovation process of described iron chloride as the front-end-of-line of processing technological flow during iron chloride solid particle gasification furnace, after solid product is all converted into iron chloride, can be used as gasification furnace to use, first to find time hydrogen chloride gas in regenerating furnace, then with gasifier operation technique, after being filled with inert protective gas by inert gas import (or hydrogen chloride gas import) (2), uniform temperature is heated in inert gas shielding atmosphere, iron chloride is gasified and becomes gaseous state iron chloride, then be arranged on inert gas that carrier gas inlet on tube connector (8) passes into take in cooler (9) and cool fast, gaseous state iron chloride is made to be converted into iron chloride solid particle, then gas-solid reaction tower (11) is entered by iron chloride solid particle discharge pipe (10), in gas-solid reaction tower (11), nitrogen oxide in air-flow and iron chloride generation gas-solid adsorption chemical reaction and absorbed, generate solid product, processed air-flow enters gas-solid reaction tower (11) by the gas feed that is processed (13), air-flow after purification is discharged from the rear gas vent (12) of purification, after reaction, solid particle is discharged from the rear solid particle outlet (14) of reaction, thus reach gas purification object.
Embodiment 1: a kind of fixed bed device schematic diagram of renovation process of described denitration iron chloride as shown in Figure 1.Iron chloride regenerating furnace is tubular type; be of a size of Φ 60mm × 600mm; the solid product added after gas-solid reaction tower denitration reaction is about 100g; regenerating furnace protection inert gas is nitrogen; employing electric tube furnace heats; the heating-up temperature of regenerating furnace is about 75 DEG C, 95 DEG C, 120 DEG C, 150 DEG C, 250 DEG C and 350 DEG C respectively, is approximately respectively about 70min, 30min, 15min, 10min, 8min and 6min, and after solid product decomposes, the process of liberating nitrogen oxide completes substantially.When stove to be regenerated is cooled to 60 DEG C-70 DEG C, the hydrogen chloride gas that content is about 1%, 10%, 15% and 30% is imported respectively again to iron chloride regenerating furnace, gas-solid contact time is about 1s-3s, reaction time is respectively about about 250min, 180min, 150min, 100min, makes the iron oxide and FeOCl etc. contained in solid product be converted into iron chloride.When after liberating nitrogen oxide after solid product decomposes, the chlorine hydride gas concentration imported to regenerating furnace is about 15%, the temperature of regenerating furnace controls when being about 30 DEG C, 150 DEG C, 250 DEG C and 350 DEG C, reaction time be respectively about about 180min, 120min, 90min and 70min time, the iron oxide contained in solid product and FeOCl etc. transform in order to iron chloride.
Embodiment 2: in above-described embodiment 1, the heating-up temperature of regenerating furnace is 120 DEG C, reaction time is about about 15min, after after solid product decomposes, the process of liberating nitrogen oxide completes substantially, when stove to be regenerated is cooled to normal temperature, import content respectively to iron chloride regenerating furnace again and be about 5%, the hydrochloric acid of 15% and 36% is about 50mL, solid product is made to be immersed in hydrochloric acid, the hydrogen chloride gas that content is about 15% is imported again to iron chloride regenerating furnace, the temperature of regenerating furnace is kept to be about 95 DEG C, reaction time is respectively about 60min, about 40min and 30min, the iron oxide contained in solid product and FeOCl etc. are converted into iron chloride.Other conditions are with example 1.
Embodiment 3: a kind of regenerating furnace of described denitration iron chloride as iron chloride solid particle gasification furnace device schematic diagram as shown in Figure 2.The solid chlorine iron that embodiment 1 regenerating furnace is obtained, heat in regenerating furnace, heating-up temperature is about 120-150 DEG C; cooler is tubular type, and diameter is Φ 40mm, and long is 1000mm; naturally cool; after cooling, gas outlet temperature is about 60 DEG C-65 DEG C, and regenerating furnace protective gas is nitrogen, and carrier gas is also nitrogen; gas-solid reaction tower tower diameter is Φ 60mm; react effective contact height and be about 1000mm, void tower, composition of tower shell material is 316L stainless steel.In air-flow, the concentration of nitrogen oxide (nitric oxide is about 90%) is 500ppm, and oxygen is about 8% (volume), carbon dioxide about 10% (volume), and moisture is about 10% (volume), and all the other are nitrogen.Reaction temperature is respectively 25 DEG C, 45 DEG C, 60 DEG C, 75 DEG C and 95 DEG C, air-flow bottom in and top out in reaction tower, iron chloride solid particle upper entering and lower leaving, and gas-solid time of contact is about 3-5s, and the mol ratio of iron chloride and nitrogen oxide is about 3: 1.Experimental result is as shown in table 1.
Table 1
Should be noted that above embodiment only for illustration of technical scheme of the present invention, protection scope of the present invention is not limited thereto.For a person skilled in the art; within the spirit and principles in the present invention all; technical scheme described in each embodiment is modified; or any equivalent replacement, amendment, changes and improvements etc. are carried out to portion of techniques feature wherein, all should be included within protection scope of the present invention.
Claims (10)
1. the renovation process of a denitration iron chloride, it is characterized in that the solid product that the nitrogen oxide generation chemical reaction in iron chloride solid particle in gas-solid reaction tower and air-flow is generated imports iron chloride regenerating furnace, uniform temperature is heated in atmosphere of inert gases or vacuum, discharge absorbed nitrogen oxide, solid product is made to be converted into iron chloride, hydrogen chloride gas is imported again to iron chloride regenerating furnace, make the Substance Transformation iron chloride such as iron oxide and FeOCl contained in solid product, thus reach the object of regeneration.
2. method according to claim 1, is characterized in that described iron chloride regenerating furnace adopts sequence to criticize feed intake reactor or the gas-solid contact reactor of continuous dosing, comprises fixed bed, ebullated bed, thermopnore, recirculating fluidized bed or moving-burden bed reactor.
3. method according to claim 1 and 2, it is characterized in that described iron chloride regenerating furnace operates under normal or reduced pressure, the heating-up temperature under normal pressure is greater than 75 DEG C.
4. method according to claim 1, after the nitrogen oxide in solid product all discharges, after can adding concentrated hydrochloric acid in iron chloride regenerating furnace, then import hydrogen chloride gas, described concentrated hydrochloric acid concentration is more than 5%.
5. the method according to claim 1 or 4, is characterized in that described to import chlorine hydride gas concentration (volume ratio) to regenerating furnace be more than 0.05%.
6. method according to claim 1, is characterized in that described iron chloride regenerating furnace can be used as the gasification furnace of preparation denitration iron chloride solid particle.
7. the fixed bed device of a kind of denitration iron chloride renovation process according to claim 1 and 2, it is characterized in that described regenerating furnace is provided with inert gas import and hydrogen chloride gas import, be provided with solid product on the top of body of heater and add entrance and nitrogen oxide outlet and vacuum orifice, bottom is provided with access hole.
8. the regenerating furnace of a kind of described denitration iron chloride according to claim 1 or 6 is as the device of iron chloride solid particle gasification furnace, it is characterized in that the regenerating furnace of described device is provided with inert gas import and hydrogen chloride gas import, be provided with solid product on the top of body of heater and add entrance and oxides of nitrogen gas outlet and vacuum orifice, bottom is provided with material outlet, described regenerating furnace top is also provided with tube connector and is communicated with cooler, tube connector is also provided with carrier gas inlet, described cooler is communicated with gas-solid reaction tower by iron chloride solid particle discharge pipe, described gas-solid reaction tower is provided with processed gas feed and the rear gas vent of purification, described gas-solid reaction tower bottom is also provided with the rear solid particle outlet of reaction.
9. method according to claim 1, is characterized in that fixed bed, moving bed, ebullated bed, fluid bed or recirculating fluidized bed gas-liquid-solid reactor that described gas-solid reaction tower adopts chemical engineering unit operation conventional.
10. the method according to claim 1 or 9, is characterized in that the range of reaction temperature in described gas-solid reaction tower is 25 DEG C-95 DEG C.
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| CN201610021099.2A CN105536501A (en) | 2016-01-06 | 2016-01-06 | Regeneration method for ferric chloride for denitration |
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| CN201610021099.2A CN105536501A (en) | 2016-01-06 | 2016-01-06 | Regeneration method for ferric chloride for denitration |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178135A (en) * | 2017-12-25 | 2018-06-19 | 黄华丽 | A kind for the treatment of method and apparatus of denitration solid product |
| CN111151231A (en) * | 2020-01-09 | 2020-05-15 | 浙江工业大学 | Method for regenerating denitration ferric chloride adsorbent |
| CN111751356A (en) * | 2020-07-22 | 2020-10-09 | 攀钢集团研究院有限公司 | Method for simultaneously determining concentration components of divalent and trivalent iron ions in Fe-EDTA (ethylene diamine tetraacetic acid) complex denitration solution |
| CN111751355A (en) * | 2020-07-22 | 2020-10-09 | 攀钢集团研究院有限公司 | Method for determining content of ferrous iron ions in Fe (II) -EDTA (ethylene diamine tetraacetic acid) complex denitration liquid |
| CN114682067A (en) * | 2020-12-26 | 2022-07-01 | 黄华丽 | Device and process for removing nitric oxide in airflow |
| US11642626B2 (en) * | 2018-11-13 | 2023-05-09 | Liwei Huang | Nitrogen oxide absorption slurry and a preparation and use method thereof |
| EP3984623A4 (en) * | 2019-06-13 | 2023-08-23 | Liwei Huang | Nitrogen oxide absorbent slurry, preparation method therefor and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353347A (en) * | 2014-10-11 | 2015-02-18 | 黄立维 | Method and device for simultaneous reduction and oxidation of nitrogen oxides from airflow |
| CN105032163A (en) * | 2015-07-02 | 2015-11-11 | 黄立维 | Method and apparatus for removing nitrogen oxide and sulfur dioxide from air flow |
| CN105170070A (en) * | 2015-07-08 | 2015-12-23 | 黄立维 | Denitration and desulfurization ferric chloride solid particles and preparation method thereof |
-
2016
- 2016-01-06 CN CN201610021099.2A patent/CN105536501A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353347A (en) * | 2014-10-11 | 2015-02-18 | 黄立维 | Method and device for simultaneous reduction and oxidation of nitrogen oxides from airflow |
| CN105126567A (en) * | 2014-10-11 | 2015-12-09 | 黄立维 | Method and device for removing nitric oxide and sulfur oxide from gas flow |
| CN105032163A (en) * | 2015-07-02 | 2015-11-11 | 黄立维 | Method and apparatus for removing nitrogen oxide and sulfur dioxide from air flow |
| CN105170070A (en) * | 2015-07-08 | 2015-12-23 | 黄立维 | Denitration and desulfurization ferric chloride solid particles and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴世敏等: "《简明精细化工大辞典》", 30 June 1999, 辽宁科学技术出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178135A (en) * | 2017-12-25 | 2018-06-19 | 黄华丽 | A kind for the treatment of method and apparatus of denitration solid product |
| US11642626B2 (en) * | 2018-11-13 | 2023-05-09 | Liwei Huang | Nitrogen oxide absorption slurry and a preparation and use method thereof |
| EP3984623A4 (en) * | 2019-06-13 | 2023-08-23 | Liwei Huang | Nitrogen oxide absorbent slurry, preparation method therefor and use method thereof |
| CN111151231A (en) * | 2020-01-09 | 2020-05-15 | 浙江工业大学 | Method for regenerating denitration ferric chloride adsorbent |
| CN111151231B (en) * | 2020-01-09 | 2021-10-15 | 浙江工业大学 | Method for regenerating denitration ferric chloride adsorbent |
| CN111751356A (en) * | 2020-07-22 | 2020-10-09 | 攀钢集团研究院有限公司 | Method for simultaneously determining concentration components of divalent and trivalent iron ions in Fe-EDTA (ethylene diamine tetraacetic acid) complex denitration solution |
| CN111751355A (en) * | 2020-07-22 | 2020-10-09 | 攀钢集团研究院有限公司 | Method for determining content of ferrous iron ions in Fe (II) -EDTA (ethylene diamine tetraacetic acid) complex denitration liquid |
| CN111751356B (en) * | 2020-07-22 | 2022-05-24 | 攀钢集团研究院有限公司 | Method for simultaneously determining concentration components of divalent and trivalent iron ions in Fe-EDTA (ethylene diamine tetraacetic acid) complex denitration solution |
| CN114682067A (en) * | 2020-12-26 | 2022-07-01 | 黄华丽 | Device and process for removing nitric oxide in airflow |
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Application publication date: 20160504 |