CN113083016B - Regeneration process of failure complexation denitration agent - Google Patents

Regeneration process of failure complexation denitration agent Download PDF

Info

Publication number
CN113083016B
CN113083016B CN202110394392.4A CN202110394392A CN113083016B CN 113083016 B CN113083016 B CN 113083016B CN 202110394392 A CN202110394392 A CN 202110394392A CN 113083016 B CN113083016 B CN 113083016B
Authority
CN
China
Prior art keywords
regeneration
hemisphere
regeneration process
complexation
oxygen
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.)
Active
Application number
CN202110394392.4A
Other languages
Chinese (zh)
Other versions
CN113083016A (en
Inventor
陈伟英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Zhongya Environmental Protection Technology Co ltd
Original Assignee
Hefei Zhongya Environmental Protection Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hefei Zhongya Environmental Protection Technology Co ltd filed Critical Hefei Zhongya Environmental Protection Technology Co ltd
Priority to CN202110394392.4A priority Critical patent/CN113083016B/en
Publication of CN113083016A publication Critical patent/CN113083016A/en
Application granted granted Critical
Publication of CN113083016B publication Critical patent/CN113083016B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • 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
    • B01D53/007—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 irradiation
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/90—Chelants
    • B01D2251/902—EDTA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Toxicology (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a regeneration process of a failure complexation denitration agent, which belongs to the technical field of denitration agents, and utilizes Fe by optimizing a photocatalysis regeneration process and assisting in throwing regeneration assisting balls 2 (C2O4) 3 The solution regenerates the disabled Fe (II) EDTA complex liquid, based on a magnetic stirring mode, the regeneration-assisting ball is forced to fully act in the photocatalysis system, hydrogen peroxide solution is slowly released in the photocatalysis system based on centrifugal action, then oxygen is orderly released into the system under the catalysis action, the oxygen can oxidize Fe (II) EDTA to relatively increase the concentration of Fe < 3+ > in the solution, thereby being beneficial to improving the generation of-OH in the system, further being beneficial to the regeneration of the complex liquid, controlling the oxygen concentration by controlling the rotating speed of the regeneration-assisting ball, playing a role of micro stirring in the oxygen releasing process, and promoting the reflection effect of the regeneration-assisting ball on illumination, thereby comprehensively improving the photocatalysis effect and the regeneration rate of the complexation denitration agent.

Description

Regeneration process of failure complexation denitration agent
Technical Field
The invention relates to the technical field of denitration agents, in particular to a regeneration process of a failure complexing denitration agent.
Background
The importance of the process of removing nitrogen oxides from combustion flue gas to prevent environmental pollution has been sharply proposed as a worldwide problem. The main processes in the world are divided into: SCR and SNCR. These two processes are not very different except that the reaction temperature is lower than SNCR due to the use of the catalyst by SCR, but if the SCR investment is at least several times, even more than 10 times, the SNCR investment from both the viewpoint of construction cost and operation cost.
Nitrogen oxides are a main pollutant causing atmospheric pollution, can form photochemical smog, destroy ozone layers, cause acid rain and cause greenhouse effect, and cause great harm to human health and natural environment. Currently, technologies for controlling NOx emissions are largely divided into two categories, low NOx combustion technologies and post-combustion NOx control technologies. The Fe (II) EDTA complexing absorption method has the advantages of high absorption rate, large complexing capacity, low temperature requirement and the like, and is widely concerned by people, but because the Fe (II) EDTA complexing liquid is easily oxidized into Fe (III) EDTA by O2 in the smoke in the process of complexing and absorbing NO, the capability of complexing and absorbing NO of the complexing liquid is gradually reduced, and the industrial application of the complexing liquid is limited. Therefore, the pure use of Fe (II) EDTA complex solution to absorb NO is difficult to maintain high NO removal rate for a long time, and in order to maintain high NO removal rate for a long time and process continuity, oxidized Fe (III) EDTA and Fe (II) EDTA-NO should be timely reduced, and the regeneration problem of Fe (II) EDTA becomes a hot spot for domestic and foreign research.
At present, aiming at the problems of poor regeneration effect and low efficiency of regeneration of Fe (II) EDTA, the traditional photocatalysis regeneration mode is difficult to effectively realize sufficient reaction in a direct irradiation mode due to complex components in a solution and weak transmissivity, so that the regeneration rate is low.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems existing in the prior art, the invention aims to provide a regeneration process of a failure complexation denitration agent, which can utilize Fe by optimizing a photocatalysis regeneration process and assisting in throwing in regeneration assisting balls 2 (C 2 O 4 ) 3 The solution regenerates the disabled Fe (II) EDTA complex liquid, based on a magnetic stirring mode, the regeneration-assisting ball is forced to fully act in the photocatalysis system, hydrogen peroxide solution is slowly released in the photocatalysis system based on centrifugal action, then oxygen is orderly released into the system under the catalysis action, the oxygen can oxidize Fe (II) EDTA to relatively increase the concentration of Fe < 3+ > in the solution, thereby being beneficial to improving the generation of-OH in the system, further being beneficial to the regeneration of the complex liquid, controlling the oxygen concentration by controlling the rotating speed of the regeneration-assisting ball, playing a role of micro stirring in the oxygen releasing process, and promoting the reflection effect of the regeneration-assisting ball on illumination, thereby comprehensively improving the photocatalysis effect and the regeneration rate of the complexation denitration agent.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The regeneration process of the failure complexation denitration agent comprises the following steps:
s1, placing a spent complexation denitration agent in a photocatalysis system, and then adjusting the pH value to 5.3;
s2, taking F with concentration of 0.001mol/Le 2 (C 2 O 4 ) 3 Uniformly mixing the solution with the complexation denitration agent, and putting a plurality of regeneration-assisting balls;
s3, placing a light source above the photocatalytic system, forcing the regeneration-assisting ball to stir by applying a rotating uniform magnetic field, releasing oxygen and improving the photocatalytic effect;
s4, the photocatalytic regeneration reaction in the photocatalytic system lasts for 50-70min, and the regeneration-assisting balls are recovered after the completion of the photocatalytic regeneration reaction.
Further, the complexing denitration agent is Fe (II) EDTA with the concentration of 0.01mol/L, and the initial pH value is changed from dilute H 2 SO 4 Or NaOH, and introducing no excessive components to interfere the regeneration reaction of the photocatalytic system as much as possible.
Further, the Fe 2 (C 2 O 4 ) 3 The solution adopts Na 2 CO 4 :FeSO 4 The compound preparation is prepared by the proportion of (3:1), and the respective concentrations are 0.06 mol/L and 0.02mol/L respectively.
Further, in the step S3, constant-temperature oil bath is adopted for heating, and the heating temperature is 45-55 ℃.
Further, the light source in the step S3 is an ultraviolet high-pressure mercury lamp with 175W power, and the wavelength is 365nm.
Furthermore, in the step S3, the concentration of oxygen in the photocatalytic system is 2% -5%, and too high oxygen concentration can oxidize more Fe (II) EDTA into Fe (III) EDTA without denitration capability, while oxygen with a reasonable concentration can relatively increase the concentration of fe3+ in the solution, which is favorable for improving the generation of-OH in the system, thereby facilitating the regeneration of the complex solution, showing positive synergy, and eliminating the influence on the complex absorption to a certain extent.
Further, help regeneration ball includes suspension hemisphere, magnetism hemisphere and fills the stock solution cover that has hydrogen peroxide solution, suspension hemisphere and magnetism hemisphere upper and lower symmetry connect, the stock solution cover is connected in the inboard between suspension hemisphere and the magnetism hemisphere, the stock solution is overlapped the inner and is connected with the locating wire of vertical setting, the activity is inlayed on the stock solution is sheathe in and is had a plurality of centrifugal seal blocks of following the annular array distribution of locating wire, be connected with many internal elastic yarns between centrifugal seal block and the locating wire, all inlay on suspension hemisphere and the magnetism hemisphere and be connected with a plurality of evenly distributed's accuse oxygen reflection microsphere, be connected with the seal wire between accuse oxygen reflection microsphere, help regeneration ball can rotate when receiving rotating magnetic field's effect, utilize centrifugal seal block to receive centrifugal force effect and break away from the stock solution cover when macroscopic stirring to release to through the guide transportation of seal wire and the contact of accuse oxygen reflection microsphere, under the catalysis effect of accuse oxygen reflection microsphere quick decomposition release oxygen, and release to photocatalysis system through accuse oxygen reflection microsphere in, and the photocatalysis can carry out the regional light transmission that can improve the local light transmission that the photocatalysis is carried out to the area when the photocatalysis is carried out on the other hand.
Further, accuse oxygen reflection microsphere includes hollow reflection hemisphere, porous catalysis hemisphere and waterproof ventilated membrane, hollow reflection hemisphere and porous catalysis hemisphere symmetry are connected, and hollow reflection hemisphere is located the outside relative porous catalysis hemisphere, waterproof ventilated membrane cladding is on the surface of hollow reflection hemisphere, a plurality of evenly distributed's effect hole has been seted up on the hollow reflection hemisphere, the activity is inlayed in the effect hole has assorted reflection movable ball, and the reflection movable ball is located between hollow reflection hemisphere and the waterproof ventilated membrane, be connected with outer elastic filament between reflection movable ball and the porous catalysis hemisphere, hollow reflection hemisphere can play the reflection effect to illumination to improve the illumination effect in the photocatalysis system, and block up by reflection movable ball under normal condition, extrude reflection movable ball and break away from after oxygen produces a certain amount, then release to the system through waterproof ventilated membrane, not only be favorable to controlling the release of oxygen, avoid oxygen concentration too high, utilize the activity of reflection movable ball when breaking away from the effect hole simultaneously, further improve the reflection effect to illumination, improve the probability of interior total coverage, difficult to appear and the photocatalysis effect leads to the general illumination.
Furthermore, the suspended hemispheres are made of light materials, the magnetic hemispheres are made of ferromagnetic materials, the overall weight of the magnetic hemispheres is larger than that of the suspended hemispheres, and the regeneration-assisting spheres are enabled to act in a reasonable posture in the photocatalytic system, so that the action of assisting in regeneration can be triggered by effectively utilizing centrifugal force.
Furthermore, the hollow reflecting hemispheres and the reflecting movable spheres are made of high-reflectivity materials, the porous catalytic hemispheres are made of manganese dioxide to form a porous structure, the illumination distribution condition in the photocatalytic system is improved by utilizing the fixed reflection of the hollow reflecting hemispheres and the movable reflection of the reflecting movable spheres, the manganese dioxide of the porous structure can be fully contacted with hydrogen peroxide solution, and gas generated by decomposition can also enter the hollow reflecting hemispheres for release.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) The scheme can optimize the photocatalytic regeneration process and utilize Fe in a mode of adding regeneration-assisting balls 2 (C 2 O 4 ) 3 The solution regenerates the disabled Fe (II) EDTA complex liquid, based on a magnetic stirring mode, the regeneration-assisting ball is forced to fully act in the photocatalysis system, hydrogen peroxide solution is slowly released in the photocatalysis system based on centrifugal action, then oxygen is orderly released into the system under the catalysis action, the oxygen can oxidize Fe (II) EDTA to relatively increase the concentration of Fe < 3+ > in the solution, thereby being beneficial to improving the generation of-OH in the system, further being beneficial to the regeneration of the complex liquid, controlling the oxygen concentration by controlling the rotating speed of the regeneration-assisting ball, playing a role of micro stirring in the oxygen releasing process, and promoting the reflection effect of the regeneration-assisting ball on illumination, thereby comprehensively improving the photocatalysis effect and the regeneration rate of the complexation denitration agent.
(2) The concentration of oxygen in the photocatalytic system is 2% -5%, more Fe (II) EDTA is oxidized into Fe (III) EDTA without denitration capability when the concentration of oxygen is too high, and the concentration of Fe & lt3+ & gt in the solution can be relatively increased by oxygen with reasonable concentration, so that the generation of-OH in the system is improved, the regeneration of complex solution is facilitated, positive synergistic effect is shown, and the influence on complex absorption is eliminated to a certain extent.
(3) The regeneration-assisting ball comprises a suspension hemisphere, a magnetic hemisphere and a liquid storage sleeve filled with hydrogen peroxide solution, the suspension hemisphere and the magnetic hemisphere are connected in an up-down symmetrical mode, the liquid storage sleeve is connected to the inner side between the suspension hemisphere and the magnetic hemisphere, a positioning wire is connected to the inner end of the liquid storage sleeve, a plurality of centrifugal sealing blocks distributed along an annular array of the positioning wire are movably embedded on the liquid storage sleeve, a plurality of inner elastic wires are connected between the centrifugal sealing blocks and the positioning wire, a plurality of uniformly distributed oxygen-controlling reflecting microspheres are embedded on the suspension hemisphere and the magnetic hemisphere, liquid guide wires are connected between the oxygen-controlling reflecting microspheres, the regeneration-assisting ball rotates under the action of a rotating magnetic field, the hydrogen peroxide solution in the liquid storage sleeve is released by the centrifugal sealing blocks under the action of centrifugal force while macroscopic stirring, oxygen is quickly decomposed and released by the contact of the oxygen-controlling reflecting microspheres under the catalysis of the oxygen-controlling reflecting microspheres, and released to a photocatalysis system by the oxygen-controlling reflecting microspheres, on one hand, the photocatalysis is cooperated with the light for regeneration, and on the other hand, the light transmission of a local area can be improved by micro stirring, and thus the photocatalysis effect is improved.
(4) The oxygen-control reflective microsphere comprises a hollow reflective hemisphere, a porous catalytic hemisphere and a waterproof breathable film, wherein the hollow reflective hemisphere is symmetrically connected with the porous catalytic hemisphere, the hollow reflective hemisphere is positioned on the outer side relative to the porous catalytic hemisphere, the waterproof breathable film is coated on the outer surface of the hollow reflective hemisphere, a plurality of uniformly distributed action holes are formed in the hollow reflective hemisphere, the matched reflective movable spheres are movably inlaid in the action holes, the reflective movable spheres are positioned between the hollow reflective hemisphere and the waterproof breathable film, external elastic wires are connected between the reflective movable spheres and the porous catalytic hemisphere, the hollow reflective hemisphere can play a role in reflecting illumination, so that the illumination effect in a photocatalytic system is improved, the reflective movable spheres are blocked by the reflective movable spheres under normal conditions, the reflective movable spheres are extruded to be separated from the system after oxygen is generated by a certain amount, then are released into the system through the waterproof breathable film, the release of oxygen is not only facilitated, the excessive oxygen concentration is avoided, the reflective movable spheres are utilized to further improve the reflection effect on illumination when the action holes, the probability of full coverage in the system is improved, and the general illumination effect is not easy to occur.
(5) The suspended hemispheres are made of light materials, the magnetic hemispheres are made of ferromagnetic materials, the overall weight of the magnetic hemispheres is larger than that of the suspended hemispheres, and the regeneration-assisting spheres are enabled to act in a reasonable posture in the photocatalytic system, so that the action of auxiliary regeneration can be triggered by effectively utilizing centrifugal force.
(6) The hollow reflecting hemispheres and the reflecting movable spheres are made of high-reflectivity materials, the porous catalytic hemispheres are made of manganese dioxide, the illumination distribution condition in the photocatalytic system is improved by utilizing the fixed reflection of the hollow reflecting hemispheres and the movable reflection of the reflecting movable spheres, the manganese dioxide of the porous structure can be fully contacted with hydrogen peroxide solution, and gas generated by decomposition can also enter the hollow reflecting hemispheres for release.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
FIG. 2 is a schematic diagram of the structure of the photocatalytic system according to the present invention;
FIG. 3 is a schematic view of the structure of the regeneration-promoting ball according to the present invention;
FIG. 4 is a schematic structural diagram of the oxygen-controlling reflective microsphere of the present invention.
The reference numerals in the figures illustrate:
1 a suspension hemisphere, 2 a magnetic hemisphere, 3 a liquid storage sleeve, 4 a positioning wire, 5 a centrifugal sealing block, 6 an inner elastic wire, 7 a liquid guiding wire, 8 an oxygen control reflecting microsphere, 81 a hollow reflecting hemisphere, 82 a porous catalysis hemisphere, 83 a waterproof and breathable film, 9 a reflecting dynamic ball and 10 an outer elastic wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1-2, a regeneration process of a failure complexing denitration agent comprises the following steps:
s1, placing a spent complexation denitration agent in a photocatalysis system, and then adjusting the pH value to 5.3;
s2, taking Fe with concentration of 0.001mol/L 2 (C 2 O 4 ) 3 Uniformly mixing the solution with the complexation denitration agent, and putting a plurality of regeneration-assisting balls;
s3, placing a light source above the photocatalytic system, forcing the regeneration-assisting ball to stir by applying a rotating uniform magnetic field, releasing oxygen and improving the photocatalytic effect;
s4, the photocatalytic regeneration reaction in the photocatalytic system lasts for 50-70min, and the regeneration-assisting balls are recovered after the completion of the photocatalytic regeneration reaction.
The complexation denitration agent is Fe (II) EDTA with the concentration of 0.01mol/L, and the initial pH value is changed from dilute H 2 SO 4 Or NaOH, and introducing no excessive components to interfere the regeneration reaction of the photocatalytic system as much as possible.
Fe 2 (C 2 O 4 ) 3 The solution adopts Na 2 CO 4 :FeSO 4 The compound preparation is prepared by the proportion of (3:1), and the respective concentrations are 0.06 mol/L and 0.02mol/L respectively.
In the step S3, constant-temperature oil bath pot is adopted for heating in an oil bath mode, and the heating temperature is 45-55 ℃.
The light source in the step S3 is an ultraviolet high-pressure mercury lamp with 175W power, and the wavelength is 365nm.
In the step S3, the oxygen concentration in the photocatalysis system is 2% -5%, more Fe (II) EDTA is oxidized into Fe (III) EDTA without denitration capability when the oxygen concentration is too high, and the concentration of Fe & lt3+ & gt in the solution can be relatively increased by the oxygen with reasonable concentration, so that the generation of-OH in the system is improved, the regeneration of complex solution is facilitated, positive synergistic effect is shown, and the influence on complex absorption is eliminated to a certain extent.
Referring to fig. 3, the regeneration-assisting ball comprises a suspension hemisphere 1, a magnetic hemisphere 2 and a liquid storage sleeve 3 filled with hydrogen peroxide solution, wherein the suspension hemisphere 1 and the magnetic hemisphere 2 are vertically and symmetrically connected, the liquid storage sleeve 3 is connected to the inner side between the suspension hemisphere 1 and the magnetic hemisphere 2, a positioning wire 4 is vertically arranged at the inner end of the liquid storage sleeve 3, a plurality of centrifugal sealing blocks 5 distributed along the annular array of the positioning wire 4 are movably embedded on the liquid storage sleeve 3, a plurality of inner elastic wires 6 are connected between the centrifugal sealing blocks 5 and the positioning wire 4, a plurality of uniformly distributed oxygen-controlling reflective microspheres 8 are embedded on the suspension hemisphere 1 and the magnetic hemisphere 2, a liquid guide wire 7 is connected between the oxygen-controlling reflective microspheres 8, the regeneration-assisting ball rotates under the action of a rotating magnetic field, the hydrogen peroxide solution in the liquid storage sleeve 3 is released by the centrifugal force action of the centrifugal sealing blocks 5 while macro-stirring, oxygen is rapidly decomposed under the catalysis of the oxygen-controlling reflective microspheres 8, and the oxygen is released by the catalysis of the oxygen-controlling reflective microspheres 8, and the photocatalysis effect of the photocatalysis-controlling microspheres is improved, and the partial light transmission is improved.
Referring to fig. 4, the oxygen-controlling reflective microsphere 8 includes a hollow reflective hemisphere 81, a porous catalytic hemisphere 82 and a waterproof and breathable film 83, the hollow reflective hemisphere 81 and the porous catalytic hemisphere 82 are symmetrically connected, the hollow reflective hemisphere 81 is located at the outer side with respect to the porous catalytic hemisphere 82, the waterproof and breathable film 83 is coated on the outer surface of the hollow reflective hemisphere 81, a plurality of uniformly distributed action holes are formed in the hollow reflective hemisphere 81, a matched reflective movable ball 9 is movably inlaid in the action holes, the reflective movable ball 9 is located between the hollow reflective hemisphere 81 and the waterproof and breathable film 83, an outer elastic wire 10 is connected between the reflective movable ball 9 and the porous catalytic hemisphere 82, the hollow reflective hemisphere 81 can play a role in reflecting light, so that the illumination effect in a photocatalytic system is improved, and the reflective movable ball 9 is blocked by the action holes in a normal state, the reflective movable ball 9 is extruded to be separated after a certain amount of oxygen is released into the system, so that the release of oxygen concentration is not only controlled, but also the excessive activity of oxygen is avoided, and the reflective movable ball 9 is utilized to further improve the probability of easily separating from the action holes, so that the illumination effect is not covered by the whole catalytic system, and the illumination effect is generally caused.
The suspended hemisphere 1 is made of light materials, the magnetic hemisphere 2 is made of ferromagnetic materials, and the whole weight of the magnetic hemisphere 2 area is larger than that of the suspended hemisphere 1 area, so that the auxiliary regeneration sphere is ensured to act in a reasonable posture in the photocatalysis system, and the action of auxiliary regeneration can be triggered by effectively utilizing centrifugal force.
The hollow reflecting hemispheres 81 and the reflecting movable spheres 9 are made of high-reflectivity materials, the porous catalytic hemispheres 82 are made of manganese dioxide to form a porous structure, the illumination distribution condition in the photocatalytic system is improved by utilizing the fixed reflection of the hollow reflecting hemispheres 81 and the movable reflection of the reflecting movable spheres 9, the manganese dioxide with the porous structure can be fully contacted with hydrogen peroxide solution, and gas generated by decomposition can also enter the hollow reflecting hemispheres 81 for release.
The invention can optimize the photocatalytic regeneration process,and the Fe is used as an auxiliary material in a mode of adding regeneration-assisting balls 2 (C 2 O 4 ) 3 The solution regenerates the disabled Fe (II) EDTA complex liquid, based on a magnetic stirring mode, the regeneration-assisting ball is forced to fully act in the photocatalysis system, hydrogen peroxide solution is slowly released in the photocatalysis system based on centrifugal action, then oxygen is orderly released into the system under the catalysis action, the oxygen can oxidize Fe (II) EDTA to relatively increase the concentration of Fe < 3+ > in the solution, thereby being beneficial to improving the generation of-OH in the system, further being beneficial to the regeneration of the complex liquid, controlling the oxygen concentration by controlling the rotating speed of the regeneration-assisting ball, playing a role of micro stirring in the oxygen releasing process, and promoting the reflection effect of the regeneration-assisting ball on illumination, thereby comprehensively improving the photocatalysis effect and the regeneration rate of the complexation denitration agent.
The above is only a preferred embodiment of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.

Claims (8)

1. A regeneration process of a failure complexation denitration agent is characterized by comprising the following steps of: the method comprises the following steps:
s1, placing a spent complexation denitration agent in a photocatalysis system, and then adjusting the pH value to 5.3;
s2, taking Fe with concentration of 0.001mol/L 2 (C 2 O 4 ) 3 Uniformly mixing the solution with the complexation denitration agent, and putting a plurality of regeneration-assisting balls;
s3, placing a light source above the photocatalytic system, forcing the regeneration-assisting ball to stir by applying a rotating uniform magnetic field, releasing oxygen and improving the photocatalytic effect;
s4, the photocatalytic regeneration reaction in the photocatalytic system lasts for 50-70min, and after the completion, the regeneration-assisting balls are recovered;
the regeneration-assisting ball comprises a suspension hemisphere (1), a magnetic hemisphere (2) and a liquid storage sleeve (3) filled with hydrogen peroxide solution, wherein the suspension hemisphere (1) and the magnetic hemisphere (2) are connected symmetrically up and down, the liquid storage sleeve (3) is connected to the inner side between the suspension hemisphere (1) and the magnetic hemisphere (2), the inner end of the liquid storage sleeve (3) is connected with a positioning wire (4) which is vertically arranged, a plurality of centrifugal sealing blocks (5) distributed along an annular array of the positioning wire (4) are movably inlaid on the liquid storage sleeve (3), a plurality of inner elastic wires (6) are connected between the centrifugal sealing blocks (5) and the positioning wire (4), a plurality of evenly distributed oxygen-controlling reflective microspheres (8) are inlaid on the suspension hemisphere (1) and the magnetic hemisphere (2), a liquid guide wire (7) is connected between the oxygen-controlling reflective microspheres (8), the oxygen-controlling reflective microspheres (8) comprise a hollow reflective hemisphere (81), a porous catalytic hollow hemispherical (82) and a waterproof permeable membrane (83), the porous catalytic hemispherical (82) and the porous hemispherical (82) are connected to the outer surface of the hollow hemispherical (81) which is relatively coated with the porous hemispherical reflective membrane (81), a plurality of evenly distributed action holes are formed in the hollow reflecting hemispheres (81), matched reflecting movable balls (9) are movably embedded in the action holes, the reflecting movable balls (9) are located between the hollow reflecting hemispheres (81) and the waterproof breathable films (83), and outer elastic wires (10) are connected between the reflecting movable balls (9) and the porous catalytic hemispheres (82).
2. The regeneration process of the failure complexation denitration agent according to claim 1, wherein the regeneration process is characterized in that: the complex denitration agent is Fe (II) EDTA with the concentration of 0.01mol/L, and the initial pH value is changed from dilute H 2 SO 4 Or NaOH adjustment.
3. The regeneration process of the failure complexation denitration agent according to claim 1, wherein the regeneration process is characterized in that: the Fe is 2 (C 2 O 4 ) 3 The solution adopts Na 2 CO 4 :FeSO 4 The compound preparation is prepared by the proportion of (3:1), and the respective concentrations are 0.06 mol/L and 0.02mol/L respectively.
4. The regeneration process of the failure complexation denitration agent according to claim 1, wherein the regeneration process is characterized in that: in the step S3, constant-temperature oil bath is adopted for heating, and the heating temperature is 45-55 ℃.
5. The regeneration process of the failure complexation denitration agent according to claim 1, wherein the regeneration process is characterized in that: the light source in the step S3 is an ultraviolet high-pressure mercury lamp with 175W power, and the wavelength is 365nm.
6. The regeneration process of the failure complexation denitration agent according to claim 1, wherein the regeneration process is characterized in that: the concentration of oxygen in the photocatalytic system in the step S3 is 2% -5%.
7. The regeneration process of the failure complexation denitration agent according to claim 1, wherein the regeneration process is characterized in that: the suspended hemisphere (1) is made of light materials, the magnetic hemisphere (2) is made of ferromagnetic materials, and the whole weight of the magnetic hemisphere (2) area is larger than that of the suspended hemisphere (1) area.
8. The regeneration process of the failure complexation denitration agent according to claim 1, wherein the regeneration process is characterized in that: the hollow reflecting hemispheres (81) and the reflecting movable spheres (9) are made of high-reflectivity materials, and the porous catalytic hemispheres (82) are made of manganese dioxide into porous structures.
CN202110394392.4A 2021-04-13 2021-04-13 Regeneration process of failure complexation denitration agent Active CN113083016B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110394392.4A CN113083016B (en) 2021-04-13 2021-04-13 Regeneration process of failure complexation denitration agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110394392.4A CN113083016B (en) 2021-04-13 2021-04-13 Regeneration process of failure complexation denitration agent

Publications (2)

Publication Number Publication Date
CN113083016A CN113083016A (en) 2021-07-09
CN113083016B true CN113083016B (en) 2023-04-25

Family

ID=76677112

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110394392.4A Active CN113083016B (en) 2021-04-13 2021-04-13 Regeneration process of failure complexation denitration agent

Country Status (1)

Country Link
CN (1) CN113083016B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5998739A (en) * 1982-11-30 1984-06-07 Mitsubishi Heavy Ind Ltd Regeneration of catalyst
CN101327397B (en) * 2008-07-03 2011-03-23 大连理工大学 Method for simultaneously removing SO2 and NO in flue gas by biological reduction and complexing absorption
US9181093B2 (en) * 2011-07-29 2015-11-10 Avent, Inc. Two part oxygen generating system
CN102976273B (en) * 2012-12-11 2014-10-29 哈尔滨工业大学 Device and method for rapidly producing oxygen
CN105498495A (en) * 2015-12-31 2016-04-20 中山大学 Device for treating waste gas by Fenton oxidation

Also Published As

Publication number Publication date
CN113083016A (en) 2021-07-09

Similar Documents

Publication Publication Date Title
US5607650A (en) Apparatus for removing contaminants from gaseous stream
EP1053390B1 (en) Regeneration of catalyst/absorber
Russo et al. Post-combustion carbon capture mediated by carbonic anhydrase
EP3272412A1 (en) Gas denitration process and apparatus
CN103752331B (en) For the multiple-effect Catalysts and its preparation method of synergistic purification biomass boiler flue gas
CN101380574A (en) Catalyst for complete oxidation of formaldehyde at room temperature
NZ296438A (en) Regeneration of catalyst/absorber
JPH04190831A (en) Recycling system for carbon dioxide as renewable resource
CN106140090A (en) A kind of MnO for removing indoor formaldehyde2aCF material and preparation method thereof
CN105080529B (en) Normal-temperature efficient removes VOCs catalysis materials
JP2009154043A (en) Nitrogen oxide removing catalyst, denitration method and denitration device
EP1484285A1 (en) Method for treating waste water
CN113083016B (en) Regeneration process of failure complexation denitration agent
CN108479796B (en) Photocatalyst and volatile organic compound purifying equipment and purifying method thereof
CN113731402B (en) Catalyst and preparation method and application thereof
WO2002022239A1 (en) Removal of sulfur oxides from exhaust gases of combustion processes
ES2239712T3 (en) OXIDATION OF AMMONIA.
CN106563468B (en) A kind of sulphur modification manganese oxide catalyst and its preparation method and application
EP1399381B1 (en) Production of ammonia synthesis gas
CN113856445A (en) Flue gas desulfurization and denitrification two-phase continuous absorption system and method
CN107115858A (en) MoO3/CeO2/Al2O3The method of tri compound nanofiber degraded indoor formaldehyde
CN113457669A (en) MnO (MnO)2Catalyst with @ nanocrystalline core-shell structure and preparation method and application thereof
CN207413137U (en) Flue-gas treater
CN110102299A (en) A kind of desulphurization denitration dual purpose catalyst and its application
CN116747857B (en) Catalytic regeneration material of sulfur-resistant carbon capture amine absorbent, and preparation method and application thereof

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
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20230321

Address after: No. 72, Tiandu Road, Hefei Economic and Technological Development Zone, Anhui Province, 230000

Applicant after: HEFEI ZHONGYA ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD.

Address before: 510700 No.39, Huangpu Avenue, Huangpu District, Guangzhou City, Guangdong Province

Applicant before: Chen Weiying

GR01 Patent grant
GR01 Patent grant