CN113384998A - Microwave denitration zeolite runner - Google Patents

Microwave denitration zeolite runner Download PDF

Info

Publication number
CN113384998A
CN113384998A CN202110761005.6A CN202110761005A CN113384998A CN 113384998 A CN113384998 A CN 113384998A CN 202110761005 A CN202110761005 A CN 202110761005A CN 113384998 A CN113384998 A CN 113384998A
Authority
CN
China
Prior art keywords
microwave
denitration
runner
cooling
regeneration
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
Application number
CN202110761005.6A
Other languages
Chinese (zh)
Inventor
吴子豹
王斐
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.)
Nantong Feiteng New Material Technology Co ltd
Original Assignee
Nantong Feiteng New Material 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 Nantong Feiteng New Material Technology Co ltd filed Critical Nantong Feiteng New Material Technology Co ltd
Priority to CN202110761005.6A priority Critical patent/CN113384998A/en
Publication of CN113384998A publication Critical patent/CN113384998A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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 adsorption, e.g. preparative gas chromatography
    • B01D53/06Separation 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 adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/106Silica or silicates
    • B01D2253/108Zeolites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/40Nitrogen compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40083Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B01D2259/40094Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating by applying microwaves

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)
  • Separation Of Gases By Adsorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to a microwave denitration zeolite runner, which comprises a runner shell, a hollow shell, a fan-shaped microwave regeneration part, an adsorption part, a denitration runner and a microwave absorption part, wherein the microwave regeneration part is provided with a regeneration area air inlet part, a regeneration area air outlet part and a cooling part, the cooling part is provided with a cooling air inlet part and a cooling air outlet part, the cooling air outlet part is communicated with the regeneration area air inlet part, the side walls of two surfaces of the adsorption part can be ventilated and are arranged adjacent to the cooling part, the denitration runner rotates in the runner shell, and the denitration runner has a nitrogen-oxygen adsorption function and a microwave absorption function; and a microwave regenerator, one side of which close to the microwave regeneration part is provided with a mica sheet and a teflon sheet, and the other side is provided with a microwave generator. The beneficial effects are that: the microwave desorption equipment is provided, the desorption rate is high and uniform, and the problem of rapid desorption is solved; meanwhile, low-concentration nitrogen oxides can be better treated.

Description

Microwave denitration zeolite runner
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a zeolite rotating wheel for denitration by a microwave method.
Background
The main denitration technologies at the present stage are a Selective Catalytic Reduction (SCR) denitration technology and a selective non-catalytic reduction (SNCR) denitration technology. The SCR denitration technology has the advantages of high denitration efficiency, but has obvious disadvantages, and an expensive denitration catalyst must be used, and the catalyst is greatly affected by acidic gases such as sulfur dioxide, and needs to be desulfurized and then denitrated. The SNCR denitration technology has the advantages of simple process and low investment, but the SNCR denitration technology needs to be carried out at high temperature, and has low denitration efficiency and high ammonia escape rate.
At present, many projects have been on NH3-SCR system, the nitrogen oxide at the outlet is 50-100 mg/m3If the concentration of nitrogen oxides is reduced, the injection amount of ammonia needs to be increased, so that the ammonia escape is increased, and the using amount of ammonia water is increased. Some NH3-SCR systems have difficulty in achieving an outlet nitrogen oxide concentration of less than 50mg/m even if the injected amount of ammonia is increased3. But there are still some treatment technologies that are lacking for low concentrations of nox.
Disclosure of Invention
In order to solve the problems, the invention adopts the following technical scheme:
the zeolite runner for microwave denitration comprises
A runner casing with a hollow structure
A microwave regeneration part which is provided with a regeneration area air inlet part and a regeneration area air outlet part,
a cooling part which is provided with a cooling air inlet part and a cooling air outlet part, wherein the cooling air outlet part is communicated with the regeneration area air inlet part,
the adsorption part is provided with air on the side walls of two surfaces and is arranged adjacent to the cooling part,
the denitration runner rotates in the runner shell and can adsorb nitric oxide and/or microwaves; the adsorption material of the denitration runner is provided with a microwave absorbent, a nitrogen oxide adsorbent, a binder and a glass fiber carrier; and
the microwave regenerator is provided with a mica sheet and a teflon sheet on one side close to the microwave regeneration part, and a microwave generator on the other side.
In some embodiments, the nitrogen-oxygen adsorbing material of the denitration runner is corrugated.
In some forms, the de-nitration rotor rotates within the rotor housing.
In some forms, the cooling portion is located downstream of the adsorption portion.
In some modes, a first barrier is arranged between the microwave regeneration part and the cooling part,
a second barrier is arranged between the cooling part and the adsorption part,
a third barrier is arranged between the adsorption part and the microwave regeneration part;
the denitration runner can pass through first barrier, second barrier, third barrier.
In some forms, the cooling outlet may be in communication with an adsorption inlet of an adsorption section.
In some embodiments, the cooling air inlet portion and the regeneration area air outlet portion are located on the same surface of the rotor shell, and the cooling air outlet portion and the regeneration area air inlet portion are located on the same surface of the rotor shell.
In some modes, the microwave regeneration part and the cooling part both occupy 15% of the circumferential area of the runner shell.
In some modes, a waveguide is arranged in the microwave regeneration part and used for guiding the microwaves of the microwave generator to the wave-absorbing material.
The invention has the beneficial effects that:
the microwave desorption equipment is provided, the desorption rate is high and uniform, and the problem of rapid desorption is solved; meanwhile, low-concentration nitrogen oxides can be better treated.
Drawings
FIG. 1 is a schematic diagram of a partially exploded view of the present invention;
FIG. 2 is a schematic view of the microwave regeneration section according to the present invention;
FIG. 3 is a schematic view of a combination structure according to the present invention;
FIG. 4 is a perspective view of an application state of the present invention;
FIG. 5 is a schematic view of an operating state of the present invention;
fig. 6 is a schematic view of another working state of the present invention.
In the figure:
10 runner casings, 11 first barriers, 12 second barriers, 13 third barriers, 20 denitration runners, 100 adsorption parts, 200 microwave regeneration parts, 210 microwave generators, 221 mica sheets, 222 teflon sheets, 223 microwave regeneration spaces, 300 cooling parts, 301 cooling air inlet parts, 302 cooling air outlet parts, 401 regeneration area air inlet parts and 402 regeneration area air outlet parts.
Detailed Description
The invention is further illustrated below:
a microwave denitration zeolite runner, as shown in figures 1 and 3, comprises a runner shell 10, which is a hollow structure, has a fan-shaped microwave regeneration part 400, a regeneration area air inlet part 401, a regeneration area air outlet part 402, a cooling part 300, a cooling air inlet part 301 and a cooling air outlet part 302, wherein the cooling air outlet part 302 is communicated with the regeneration area air inlet part 401,
the adsorption part 100, both side walls of which are permeable, is disposed adjacent to the cooling part 300,
a denitration runner 20 rotating in the runner housing 10, the denitration runner 20 having a nitrogen-oxygen adsorbing material; the denitration runner 20 is provided with nitrogen and oxygen adsorption and microwave absorption materials, and the adsorption material of the denitration runner 20 is provided with a microwave absorbent, a nitrogen oxide adsorbent, a binder and a glass fiber carrier. And
the microwave regenerator 200 has a mica sheet 221 and a teflon sheet 222 on one side close to the microwave regeneration part 400, and a microwave generator 210 on the other side. Other materials equivalent to the mica sheet 221 and the teflon sheet 222 should also be within the scope of the invention. The approaching includes that the two are closely connected and close to each other, and the approaching is not limited to the spatial relationship, mainly based on the moving direction of the microwave, and in the moving direction of the microwave of the guide runner, the microwave generated by the microwave generator 210 needs to pass through the mica sheet 221 and the teflon sheet 222, and is not limited by other position relationships, so that all the microwave regeneration operations can be realized.
The denitration runner 20 rotates in the runner housing 10 in an operating state, when a specific portion first rotates to the adsorption region, the exhaust gas passes through the adsorption portion 100, and the adsorption region adsorbs gases such as nitric oxide and nitrogen dioxide;
then the part continues to rotate to a microwave regeneration part 200, and the nitrogen oxides are resolved out through the microwave regeneration function;
one is as follows: when the nitrogen oxide is analyzed, the air entering from the cooling part 300 enters the microwave regeneration part 200 from the gas channel, and then the separated nitrogen oxide is taken out from the microwave regeneration part 200;
the other is as follows: the denitration runner 20 continues to rotate to the cooling unit 300, and the gas in the cooling unit 300 enters from one surface and passes through the denitration runner 20, and leaves from the other surface of the cooling unit 300, and carries out the precipitated nitrogen oxide.
In one case, as shown in fig. 6, the adsorption part 100, the microwave regeneration part 200, and the cooling part 300 are all distributed in a fan shape around a circle center, and are in a plurality of fan-shaped area blocks.
The nitrogen-oxygen adsorbing material of the denitration runner 20 is corrugated. The rotary wheel is formed by a corrugated structure made of nitrogen oxide adsorbing materials, and the adsorbed nitrogen oxide is resolved out by adopting a microwave method to form high-concentration nitrogen oxide for subsequent treatment.
The denitration rotor 20 rotates in the rotor housing 10.
The cooling part 300 is located downstream of the adsorption part 100. Wherein the upstream and downstream are referenced to the rotation direction of the denitration runner 20.
Referring to fig. 3 and 5, in some embodiments, the cooling inlet 301 and the regeneration zone outlet 402 are located on the same surface of the rotor shell 10, and the cooling outlet 302 and the regeneration zone inlet 401 are located on the same surface of the rotor shell 10. In another use environment, the position relationship can also be set according to the actual situation.
A first barrier 11 is provided between the microwave regeneration part 200 and the cooling part 300,
the cooling part 300 and the adsorption part 100 have a second barrier 12 therebetween,
a third barrier 13 is arranged between the adsorption part 100 and the microwave regeneration part 200;
the denitration wheel 20 can pass through the first barrier 11, the second barrier 12, and the third barrier 13. A sealing structure tends to be formed between the denitration runner 20 and the barrier, and any sealing structure can be realized by separating a plurality of chambers, and the specific structure is not particularly limited, and one mode can be realized by adopting the prior art.
Sealing mechanisms are arranged among the first barrier 11, the second barrier 12, the third barrier 13 and the denitration runner 20. Even if the denitration rotor 20 is rotated, the adsorption part 100, the microwave regeneration part 200, and the cooling part 300 are not likely to generate gas cross-flow. The sealing mechanism can adopt the existing mode, can achieve the purpose of replacement, and meanwhile, the sealing effect can achieve basic isolation without limiting complete isolation.
The cooling air outlet portion 302 can communicate with the adsorption air inlet portion of the adsorption portion 100.
A nitrogen oxide treatment device is arranged between the cooling air outlet part 302 and the adsorption air inlet part.
The microwave regeneration part 200 and the cooling part 300 both occupy 15% of the circumferential area of the rotor shell 10. The area of the circle is shown in fig. 6, which shows the area ratio of the concentric three sectors to the whole disk of the apparatus. That is, the fan-shaped central angles of the microwave regeneration unit 200 and the cooling unit 300 are 54 °.
The microwave regeneration part 200 is provided with a waveguide for guiding the wave of the microwave generator 210 to the wave-absorbing material, the waveguide is used for guiding the microwave to the wave-absorbing material, and is a metal stainless steel or aluminum frame, and the principle is to make use of the rebound effect of the metal on the microwave. The mica sheet is used for blocking dust and transmitting microwaves; the Teflon sheet is used for blocking gas and transmitting microwaves. One of the ways of the waveguide is to use the existing one.
With reference to the contents shown in fig. 3-5, an operating state of the present invention is described in detail:
when the adsorption area works, nitrogen monoxide and nitrogen dioxide in the flue gas are simultaneously adsorbed in the porous nitrogen oxide adsorption material, and the flue gas reaching the standard after treatment is discharged from a chimney;
when the adsorption area is switched to a microwave regeneration area, one side of the microwave regenerator close to the microwave regeneration part is provided with a mica sheet and a teflon sheet, and the other side is provided with a microwave generator; the microwave generated by the microwave regenerator is guided to a denitration rotating wheel in the microwave regeneration zone;
the nitrogen oxide adsorbed in the denitration runner is resolved by microwave, the nitrogen oxide is taken out by gas sent from the cooling area, and the formed high-concentration nitrogen oxide is conveyed to a rear-section high-concentration nitrogen oxide treatment device by a desorption pipeline, and the rear-section high-concentration nitrogen oxide treatment device is provided with NH3-SCR, water absorption or alkali liquor absorption, compression liquefaction and the like.
And transferring to a cooling zone after passing through the microwave regeneration zone, introducing air to cool the nitrogen oxide adsorbing material to room temperature, and delivering the residual nitrogen oxide and high-temperature gas to the microwave regeneration zone. And the cooled nitrogen oxide adsorbing material enters the adsorption area again for adsorption, and the cycle is repeated.
The method overcomes the defects of a fixed bed nitrogen oxide adsorption method, large using amount of an adsorption material, large occupied space of fixed bed equipment, conversion of hot air desorption into microwave desorption in a regeneration process, high and uniform desorption rate and solves the problem of rapid desorption.
And (3) comparing data:
Figure BDA0003149729920000061
it will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.

Claims (10)

1. The microwave denitration zeolite runner is characterized by comprising
A runner casing (10) of hollow structure having
A microwave regeneration part (400) which is provided with a regeneration area air inlet part (401) and a regeneration area air outlet part (402),
a cooling part (300) which is provided with a cooling air inlet part (301) and a cooling air outlet part (302), wherein the cooling air outlet part (302) is communicated with a regeneration area air inlet part (401),
the adsorption part (100) is provided with air on both side walls and is arranged adjacent to the cooling part (300),
the denitration runner (20) rotates in the runner shell (10), and the denitration runner (20) can adsorb nitric oxide and/or microwaves; and
the microwave regenerator (200) is provided with a mica sheet (221) and a Teflon sheet (222) on one side close to the microwave regenerator part (400), and a microwave generator (210) on the other side.
2. The microwave denitration zeolite wheel of claim 1, wherein the adsorbent material of the denitration wheel (20) is corrugated.
3. The microwave denitration zeolite wheel of claim 2, wherein the adsorption material of the denitration wheel (20) comprises a microwave absorbent, a nitrogen oxide adsorbent, a binder and a glass fiber carrier.
4. The microwave denitration zeolite rotor of claim 1, wherein the denitration rotor (20) rotates in the rotor housing (10).
5. The microwave denitration zeolite wheel of claim 4, wherein the cooling unit (300) is located downstream of the adsorption unit (100).
6. The microwave denitration zeolite wheel of claim 1,
a first barrier (11) is arranged between the microwave regeneration part (200) and the cooling part (300),
a second barrier (12) is arranged between the cooling part (300) and the adsorption part (100),
a third barrier (13) is arranged between the adsorption part (100) and the microwave regeneration part (200);
the denitration runner (20) can pass through the first barrier (11), the second barrier (12) and the third barrier (13).
7. The microwave denitration zeolite wheel of claim 6, wherein the cooled gas outlet portion (302) is capable of communicating with an adsorption gas inlet portion of the adsorption portion (100).
8. The microwave denitration zeolite runner of claim 6, wherein the cooling inlet portion (301) and the regeneration zone outlet portion (402) are located on the same surface of the runner shell (10), and the cooling outlet portion (302) and the regeneration zone inlet portion (401) are located on the same surface of the runner shell (10).
9. The microwave denitration zeolite wheel of claim 1, wherein the microwave regeneration part (200) and the cooling part (300) both occupy 15% of the circumferential area of the wheel shell (10).
10. The zeolite rotating wheel for denitration by microwave method according to claim 1, wherein a waveguide is provided in the microwave regeneration part (200) for guiding the microwave of the microwave generator (210) to the wave-absorbing material.
CN202110761005.6A 2021-07-06 2021-07-06 Microwave denitration zeolite runner Pending CN113384998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110761005.6A CN113384998A (en) 2021-07-06 2021-07-06 Microwave denitration zeolite runner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110761005.6A CN113384998A (en) 2021-07-06 2021-07-06 Microwave denitration zeolite runner

Publications (1)

Publication Number Publication Date
CN113384998A true CN113384998A (en) 2021-09-14

Family

ID=77625179

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110761005.6A Pending CN113384998A (en) 2021-07-06 2021-07-06 Microwave denitration zeolite runner

Country Status (1)

Country Link
CN (1) CN113384998A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296823B1 (en) * 1997-07-15 2001-10-02 Daimlerchrysler Ag Method and installation for eliminating gaseous organic substances in the air
JP2004275805A (en) * 2003-03-12 2004-10-07 Mitsubishi Heavy Ind Ltd Method and apparatus for treating nitrogen oxide
CN105188883A (en) * 2013-05-09 2015-12-23 恩必安有限公司 Air purification device
CN106540509A (en) * 2016-11-25 2017-03-29 胡毅强 Capstan head type micro-wave adsorption/desorption device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296823B1 (en) * 1997-07-15 2001-10-02 Daimlerchrysler Ag Method and installation for eliminating gaseous organic substances in the air
JP2004275805A (en) * 2003-03-12 2004-10-07 Mitsubishi Heavy Ind Ltd Method and apparatus for treating nitrogen oxide
CN105188883A (en) * 2013-05-09 2015-12-23 恩必安有限公司 Air purification device
CN106540509A (en) * 2016-11-25 2017-03-29 胡毅强 Capstan head type micro-wave adsorption/desorption device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
应四新: "《微波加热与微波干燥》", 30 October 1976, 国防工业出版社 *
张裕中等: "高等学校专业教材 江苏省高等学校重点立项建设精品教材 食品加工技术装备 第2版》", 中国轻工业出版社 *

Similar Documents

Publication Publication Date Title
EP0742739B1 (en) Material for removing contaminants from gaseous stream
AU2022271506B2 (en) Low-temperature adsorption flue gas denitration system and process
CA2283092C (en) Apparatus for removing contaminants from gaseous stream
CN113975938B (en) Rotary device and method for adsorbing and capturing carbon dioxide in flue gas at low temperature
JPH04227026A (en) Method for removing nitrogen oxide and the like from flue gas
WO2023029408A1 (en) Flue gas purification system
CN215916905U (en) Microwave method denitration zeolite runner microwave regeneration subassembly
CN113384998A (en) Microwave denitration zeolite runner
CN117563379A (en) CO and NO by heat exchanger with CO adsorption function x System for removal
CN112807934A (en) Rotary treatment device for nitrogen oxides in flue gas and method for treating flue gas by rotary treatment device
CN104307364A (en) Desulfurization and denitrification integrated flue gas cleaning system and method
JPH03258324A (en) Device for cleaning ventilating gas of road tunnel or the like
JP3197072B2 (en) Regeneration method of ammonia adsorbent
CN214287438U (en) Organic waste gas molecular sieve adsorption concentration device
CN204170620U (en) A kind of desulfurization and denitrification integral flue gas purification system
CN113509820A (en) Method for preparing acid by concentrating nitrogen oxide by zeolite rotating wheel and washing and absorbing nitrogen oxide
JPH07256054A (en) Apparatus and method for adsorbing and removing nox
CN206875465U (en) The system that interior circulation removes nitrogen oxides in coal-fired plant flue gas
CN110585907A (en) Integrated desulfurization and denitrification device and process for internal circulating fluidized bed coupled heat exchanger
GB2595553A (en) Low-temperature adsorption and denitration system for flue gas and process thereof
CN110960972A (en) Environment-friendly exhaust treatment device
JPH0578369B2 (en)
CN221513999U (en) System for removing CO and NOx by using heat exchanger with CO adsorption function
CN217795485U (en) Organic waste gas adsorption concentration-catalytic oxidation integrated device
JP2004275805A (en) Method and apparatus for treating nitrogen oxide

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210914