CN110433412A - A kind of nitrogen oxides (NOX) gas mask canister - Google Patents

A kind of nitrogen oxides (NOX) gas mask canister Download PDF

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Publication number
CN110433412A
CN110433412A CN201910612932.4A CN201910612932A CN110433412A CN 110433412 A CN110433412 A CN 110433412A CN 201910612932 A CN201910612932 A CN 201910612932A CN 110433412 A CN110433412 A CN 110433412A
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CN
China
Prior art keywords
nitrogen oxides
tank body
upper tank
lower tank
gas mask
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Pending
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CN201910612932.4A
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Chinese (zh)
Inventor
卢晗锋
王宁
蒋康
吴相浩
周瑛
孙仕涵
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Priority to CN201910612932.4A priority Critical patent/CN110433412A/en
Publication of CN110433412A publication Critical patent/CN110433412A/en
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • 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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • 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

Abstract

The invention discloses a kind of nitrogen oxides (NOX) gas mask canisters, the canister includes upper tank body and lower tank two parts, the upper tank body and lower tank detachable connection, the upper tank body lumen loading chemical absorptive material, the lower tank lumen loading nitrogen oxide catalyst is equipped with wire mesh between the upper tank body and lower tank.The present invention uses catalytic oxidation technologies, while making full use of the O in air2By the nitrous oxides exhaust gas oxide middle and high concentration of low degree of oxidation, nox contained waste gas is removed using oxidative absorption type composite absorber, both the oxidation characteristic under the normal temperature and pressure of oxidant to NO had been utilized, Chemisorption occurs using the nitrogen oxides in high molecular polymer and exhaust gas again, removes the nitrogen oxides in exhaust gas.

Description

A kind of nitrogen oxides (NOX) gas mask canister
(1) technical field
The invention belongs to toxic gas cleaning equipment fields, are related to the physical protection of air pollutants, in particular to a kind of The gas mask canister in nitrogen oxides leakage place.
(2) background technique
Gas mask is to protect human respiratory, eyes and face from Toxics such as poison gas, dust, bacterium or steam The personal protection equipment of matter injury.Core component of the canister as breathing mask, the internal direct shadow of adsorbent material loaded Ring the protective performance of mask.Industrial manufacture nitric acid, nitric acid, which embathe the places such as metal or the fermentation of nonventilated granary, all has one Risk is determined, if there is misoperation that can release a large amount of nitrogen oxides (NOX) gas, if directly being absorbed by operator will cause The symptoms such as eyes and mucosal irritation, headache, respiratory disease, pulmonary dysfunction are even lethal, deposit to staff's health In grave danger.Research at present to gas mask in nitrogen oxide absorbent field is less, and the complication of modern nitric acid industry Higher requirement is had also been proposed to the gas mask with this special role.
The filter poison adsorbent material for the gas mask sold currently on the market is mainly active carbon and activated carbon fibre Material, but the effect is unsatisfactory in practical applications.The modified active carbon fiber proposed such as Chinese patent (CN106824077A) There is microcellular structure abundant NOx can be made to carry out enrichment absorption in duct for method, activated carbon fibre, but in application process Although middle activated carbon fibre is to NO2Adsorption effect is preferable, there is a very big saturated adsorption capacity, but its to the adsorption capacity of NO very It is weak, in addition, the adsorption effect of absorbent charcoal material is affected by foreign gas in air, especially there is condition existing for steam Under, it will lead to its adsorption effect and decline to a great extent；The use that Zhang et al. (Langmuir., 1993,9:2331-2334) is proposed is more Hole zeolite molecular sieve is as a kind of NOx adsorbent material, can not be complete to NO but equally there is also adsorption capacity between nitrogen oxides is weak The shortcomings that full absorption.
Therefore, place is revealed for the nitrogen oxides under normal temperature and pressure, there is an urgent need to a kind of efficient canisters to protect The health of rescue personnel and the people.
(3) summary of the invention
For problem of the prior art, the present invention provides a kind of nitrogen oxides gas mask canister.
The present invention solves its technical problem using following technical scheme:
A kind of nitrogen oxides gas mask canister, including upper tank body and lower tank two parts, the upper tank body and Lower tank detachable connection, the upper tank body lumen loading chemical absorptive material, the lower tank lumen loading nitrogen oxides Catalyst is equipped with wire mesh between the upper tank body and lower tank；The nitrogen oxide catalyst is active carbon, no With one of the molecular sieve catalyst of silica alumina ratio or metal oxide or any several compositions；The chemical absorptive material is With NO and NO2The solid phase high molecular polymer absorbent of chemisorption occurs.
Further, the molecular sieve catalyst is sial atomic molar than between 30~500 or the ZSM-5 of total silicon Molecular sieve or beta-molecular sieve, the ZSM-5 zeolite molecular sieve with metal ion exchangeds such as Li, Na, K, Rb, Mg, Ca, Fe, Cu.
Further, the metal oxide is one of metal oxides such as Mn, Co, Cu, Fe, Ni or Al or any Several mixing.
Further, the solid phase high molecular polymer adsorbent includes polystyrene, styrene-divinylbenzene polymerization The groups such as the macromolecule resins such as object, polydivinylbenezene and carboxyl, amide groups, pyridine, imidazoles are in polydivinylbenezene high score The polymer absorbant of graft modification on sub- skeleton.
Further, the nitrogen oxide catalyst is preferably sial atomic molar than the ZSM-5 molecular sieve catalysis for 300 Agent.
Further, the solid phase high molecular polymer adsorbent is preferably polydivinylbenezene.
Further, the nitrogen oxide catalyst partial size and solid phase high molecular polymer adsorbent partial size difference are preferred For 20~60 mesh.
Nitrogen oxide catalyst of the present invention and solid phase high molecular polymer adsorbent are respectively charged into cotton mesh bag Then it is filled in upper tank body and lower tank respectively.
Further, the upper tank body and lower tank are using threaded connection.
Canister of the present invention is used for nitrogen oxides breathing mask, and the air of sucking enters in lower tank, in lower tank Nitrogen oxide catalyst can be by NO in O in body2Acting on lower Partial Oxidation is NO2, form a certain proportion of NO and NO2It is mixed Close gas；Then gaseous mixture enters upper tank body, the solid phase polymeric absorbent and the nitrous oxides exhaust gas Jing Guo catalysis oxidation Reactive absorption, while nitro compound is generated, to realize that the purification to nitrogen oxides removes.
Compared with prior art, the present invention provides a kind of gas mask filter poison of effectively purification removing nitrogen oxides Tank.In the treatment process to nitrogen oxides leakage place, the exhaust gas containing certain nitrous oxides concentration passes through gas defence face first The lower tank of the canister of cover, so that intractable low degree of oxidation nitrogen oxides is become by the catalysis oxidation of nitrogen oxide catalyst For middle high oxidation degree, then pass through the absorption of canister upper tank body high molecular polymer absorbent, the selection reached to exhaust gas is net Change, purification efficiency reaches 100%, and the purpose of human body is entered after efficient removal.
Compared with prior art, the invention has the characteristics that
1. using catalytic oxidation technologies, while making full use of the O in air2, by the nitrous oxides exhaust gas oxygen of low degree of oxidation Compound middle and high concentration, the absorption for subsequent high molecular polymer absorbent provide basis；
2. nox contained waste gas is removed using oxidative absorption type composite absorber, both using under the normal temperature and pressure of oxidant It to the oxidation characteristic of NO, and utilizes the nitrogen oxides in high molecular polymer and exhaust gas that Chemisorption occurs, removes exhaust gas In nitrogen oxides；
3. carrying out adsorption treatment, efficiently, Simple portable to nitrogen oxides under normal temperature and pressure；
4, the exhaust gas in nitrogen oxides leakage place under normal temperature and pressure is entered before human body and realizes high-efficient purification, and canister is torn open It unloads simply, respiratory resistance is smaller, and user is made to feel comfortable.
(4) Detailed description of the invention
Fig. 1 is the structural schematic diagram of canister upper tank body of the present invention.
Fig. 2 is the structural schematic diagram of canister lower tank of the present invention.
Specific embodiment
Below with reference to relevant drawings and embodiment, the present invention is described further, but protection scope of the present invention is not It is only limitted to this:
Referring to Fig. 1, Fig. 2, nitrogen oxides gas mask canister of the present invention, including upper tank body 1 and lower tank 2, the upper tank body 1 and lower tank 2 are linked by internal and external threads, and 3 part of canister is also by screw thread inward turning and mask after connection Main body connection.Nitrogen oxide catalyst in the lumen loading above-mentioned technical proposal of the lower tank 2 is filled out in the upper tank body 1 Fill high molecular polymerization adsorbent material.
ZSM-5 catalyst of the present invention provides for Shanghai Heng Ye molecular sieve limited liability company, poly- divinylbenzene class Resin is prepared by laboratory, and active carbon is primary attachment material activity charcoal in 3M company 620E respiratory protection suit in comparative example.
Polydivinylbenezene resinoid, is specifically prepared as follows:
(1) 5.0g divinylbenzene (DVB) is added in 100.0g perforating agent tetrahydrofuran (THF), 20.0g acryloyl Amine, while 0.1g initiator azodiisobutyronitrile is added and is uniformly mixed, it is stirred to react 4h at 25 DEG C, obtains mixed liquor；(2) will Mixed liquor obtained by step (1) is transferred in the stainless steel crystallizing kettle of polytetrafluoroethyllining lining, the crystallization in 100 DEG C of crystallization casees 48h makes reactant that polymerization reaction occur, and takes out stainless steel crystallizing kettle, cooled to room temperature after complete reaction；
(3) the solid product taking-up after step (2) crystallization is transferred in vacuum oven and is dried in vacuo, gathered Divinylbenzene resinoid.
Comparative example 1
NO containing 180ppm in exhaust gas, 20ppmNO2, 20% O2, remaining is N2, upper tank body inner cavity addition 2.5g active carbon, Lower tank is not filled with material and is adsorbed as a comparison case.Nitrous oxides exhaust gas passes through canister, adsorbs with active carbon, right The a degree of purification removing of the carry out of nitrogen oxides of exhaust gas.Gas flow is 0.6L/min, is reacted at normal temperatures and pressures, Import and export nitrous oxides concentration is detected by 340 flue gas analyzer of testo.
Comparative example 2
NO containing 140ppm in exhaust gas, 60ppmNO2, 20% O2, remaining is N2, upper tank body inner cavity addition 2.5g active carbon, Lower tank is not filled with material and is adsorbed as a comparison case.Nitrous oxides exhaust gas passes through canister, adsorbs with active carbon, right The a degree of purification removing of the carry out of nitrogen oxides of exhaust gas.Gas flow is 0.6L/min, is reacted at normal temperatures and pressures, Import and export nitrous oxides concentration is detected by 340 flue gas analyzer of testo.
Comparative example 3
NO containing 100ppm in exhaust gas, 100ppmNO2, 20% O2, remaining is N2, 2.5g activity is added in upper tank body inner cavity Charcoal, lower tank are not filled with material and are adsorbed as a comparison case.Nitrous oxides exhaust gas passes through canister, inhales with active carbon It is attached, a degree of purification of the carry out of nitrogen oxides of exhaust gas is removed.Gas flow is 0.6L/min, at normal temperatures and pressures instead It answers, import and export nitrous oxides concentration is detected by 340 flue gas analyzer of testo.
Embodiment 1
Exhaust gas NO containing 180ppm, 20ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The ZSM-5 catalyst that~60 mesh sial atomic ratios are 300, the poly- divinylbenzene of 20~60 mesh that 1.5g is added in upper tank body inner cavity carry out The removing of nitrogen oxides purifies, when nitrous oxides exhaust gas passes through lower tank, import NO and O2It is first by lower tank catalysed partial Initial oxidation is at NO2, to form a certain proportion of NO2With NO mixed gas, when then passing through upper tank body, nitrogen oxides and solid Chemisorption occurs for adsorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min, in normal temperature and pressure Lower reaction, import and export NOx concentration are detected by 340 flue gas analyzer of testo.
Embodiment 2
Exhaust gas NO containing 180ppm, 20ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The 20~60 of 1.5g are added in the ZSM-5 catalyst that~60 mesh are 300 by Co ion exchange sial atomic ratio, upper tank body inner cavity The poly- divinylbenzene of mesh carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Pass through Lower tank catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body When, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 3
Exhaust gas NO containing 180ppm, 20ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The 20~60 of 1.5g are added in the ZSM-5 catalyst that~60 mesh are 300 by Li ion exchange sial atomic ratio, upper tank body inner cavity The poly- divinylbenzene of mesh carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Pass through Lower tank catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body When, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 4
Exhaust gas NO containing 180ppm, 20ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The ZSM-5 catalyst that~60 mesh sial atomic ratios are 300,20~60 mesh carboxylic groups grafting that 1.5g is added in upper tank body inner cavity change Property poly- divinylbenzene carry out nitrogen oxides removing purification, when nitrous oxides exhaust gas pass through lower tank when, import NO and O2It is logical It crosses lower tank catalysed partial and is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body When, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 5
Exhaust gas NO containing 180ppm, 20ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The ZSM-5 catalyst that~60 mesh sial atomic ratios are 300,20~60 mesh amide groups grafting that 1.5g is added in upper tank body inner cavity change Property poly- divinylbenzene carry out nitrogen oxides removing purification, when nitrous oxides exhaust gas pass through lower tank when, import NO and O2It is logical It crosses lower tank catalysed partial and is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body When, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 6
Exhaust gas NO containing 140ppm, 60ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The ZSM-5 catalyst that~60 mesh sial atomic ratios are 300, the poly- divinylbenzene of 20~60 mesh that 1.5g is added in upper tank body inner cavity carry out The removing of nitrogen oxides purifies, when nitrous oxides exhaust gas passes through lower tank, import NO and O2It is first by lower tank catalysed partial Initial oxidation is at NO2, to form a certain proportion of NO2With NO mixed gas, when then passing through upper tank body, nitrogen oxides and solid Chemisorption occurs for adsorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min, in normal temperature and pressure Lower reaction, import and export NOx concentration are detected by 340 flue gas analyzer of testo.
Embodiment 7
Exhaust gas NO containing 140ppm, 60ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The 20~60 of 1.5g are added in the ZSM-5 catalyst that sial atomic ratio of~60 mesh Jing Guo Co ion exchange is 300, upper tank body inner cavity The poly- divinylbenzene of mesh carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Pass through Lower tank catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body When, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 8
Exhaust gas NO containing 140ppm, 60ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g 20~60 mesh of 1.5g are added in the ZSM-5 catalyst that~60 mesh are 300 by Li ion exchange sial atomic ratio, upper tank body inner cavity Poly- divinylbenzene carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Under Tank body catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body when, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/ Min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 9
Exhaust gas NO containing 140ppm, 60ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The ZSM-5 catalyst that~60 mesh sial atomic ratios are 300,20~60 mesh carboxylic groups grafting that 1.5g is added in upper tank body inner cavity change Property poly- divinylbenzene carry out nitrogen oxides removing purification, when nitrous oxides exhaust gas pass through lower tank when, import NO and O2It is logical It crosses lower tank catalysed partial and is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body When, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 10
Exhaust gas NO containing 140ppm, 60ppmNO2, 20% O2, remaining is N2, the 20 of canister lower lumen addition 1.0g The ZSM-5 catalyst that~60 mesh sial atomic ratios are 300,20~60 mesh amide groups grafting that 1.5g is added in upper tank body inner cavity change Property poly- divinylbenzene carry out nitrogen oxides removing purification, when nitrous oxides exhaust gas pass through lower tank when, import NO and O2It is logical It crosses lower tank catalysed partial and is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body When, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 11
Exhaust gas NO containing 100ppm, 100ppmNO2, 20% O2, remaining is N2, the 20~60 of 1.0g are added in lower tank inner cavity The ZSM-5 catalyst that mesh sial atomic ratio is 300, the poly- divinylbenzene of 20~60 mesh that 1.5g is added in upper tank body inner cavity carry out nitrogen oxygen The removing of compound purifies, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Pass through lower tank catalysed partial oxygen first It is melted into NO2, to form a certain proportion of NO2With NO mixed gas, when then passing through upper tank body, nitrogen oxides and solid absorption Chemisorption occurs for agent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min, at normal temperatures and pressures instead It answers, import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 12
Exhaust gas NO containing 100ppm, 100ppmNO2, 20% O2, remaining is N2, the 20~60 of 1.0g are added in lower tank inner cavity 20~60 mesh poly- two of 1.5g are added in the ZSM-5 catalyst that mesh is 300 by Co ion exchange sial atomic ratio, upper tank body inner cavity Ethenylbenzene carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Pass through lower tank Catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, when then passing through upper tank body, nitrogen oxygen Chemisorption occurs for compound and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min, It reacts at normal temperatures and pressures, import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 13
Exhaust gas NO containing 100ppm, 100ppmNO2, 20% O2, remaining is N2, the 20~60 of 1.0g are added in lower tank inner cavity 20~60 mesh poly- two of 1.5g are added in the ZSM-5 catalyst that mesh is 300 by Li ion exchange sial atomic ratio, upper tank body inner cavity Ethenylbenzene carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Pass through lower tank Catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, when then passing through upper tank body, nitrogen oxygen Chemisorption occurs for compound and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/min, It reacts at normal temperatures and pressures, import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 14
Exhaust gas NO containing 100ppm, 100ppmNO2, 20% O2, remaining is N2, the 20~60 of 1.0g are added in lower tank inner cavity 20~60 mesh carboxylic group graft modifications of 1.5g are added in the ZSM-5 catalyst that mesh sial atomic ratio is 300, upper tank body inner cavity Poly- divinylbenzene carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Under Tank body catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body when, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/ Min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
Embodiment 15
Exhaust gas NO containing 100ppm, 100ppmNO2, 20% O2, remaining is N2, the 20~60 of 1.0g are added in lower tank inner cavity 20~60 mesh amide group graft modifications of 1.5g are added in the ZSM-5 catalyst that mesh sial atomic ratio is 300, upper tank body inner cavity Poly- divinylbenzene carries out the removing purification of nitrogen oxides, when nitrous oxides exhaust gas passes through lower tank, import NO and O2Under Tank body catalysed partial is oxidized to NO first2, to form a certain proportion of NO2With NO mixed gas, then pass through upper tank body when, Chemisorption occurs for nitrogen oxides and solid absorbent, high-efficient purification is completed, into mask.Gas flow is 0.6L/ Min reacts at normal temperatures and pressures, and import and export NOx concentration is detected by 340 flue gas analyzer of testo.
The purification efficiency of comparative example 1~3, the NOx at different conditions of embodiment 1~15 is shown in Table attached 1.
Subordinate list 1: the purification efficiency of NOx under different condition

Claims (9)

1. a kind of nitrogen oxides gas mask canister, it is characterised in that: described including upper tank body and lower tank two parts Upper tank body and lower tank detachable connection, the upper tank body lumen loading chemical absorptive material, the lower tank lumen loading Nitrogen oxide catalyst is equipped with wire mesh between the upper tank body and lower tank；The nitrogen oxide catalyst is One of active carbon, the molecular sieve catalyst of different silica alumina ratios or metal oxide or any several compositions；The chemistry Absorbing material be and NO and NO2The solid phase high molecular polymer absorbent of chemisorption occurs.
2. nitrogen oxides gas mask canister as described in claim 1, it is characterised in that: the molecular sieve catalyst For sial atomic molar than between 30~500 or the ZSM-5 molecular sieve of total silicon or beta-molecular sieve, with Li, Na, K, Rb, Mg, The ZSM-5 zeolite molecular sieve of the metal ion exchangeds such as Ca, Fe, Cu.
3. nitrogen oxides gas mask canister as described in claim 1, it is characterised in that: the metal oxide is One of metal oxides such as Mn, Co, Cu, Fe, Ni or Al or any several mixing.
4. nitrogen oxides gas mask canister as described in claim 1, it is characterised in that: the solid phase high molecular polymerization Object adsorbent includes macromolecule resins and the carboxylics such as polystyrene, styrene-divinylbenzene polymer, polydivinylbenezene The polymer absorbant of the groups such as base, amide groups, pyridine, imidazoles graft modification on polydivinylbenezene macromolecular scaffold.
5. nitrogen oxides gas mask canister as described in claim 1, it is characterised in that: the nitrogen oxide catalyst It is sial atomic molar than the ZSM-5 molecular sieve catalyst for 300.
6. nitrogen oxides gas mask canister as claimed in claim 4, it is characterised in that: the solid phase high molecular polymerization Object adsorbent is polydivinylbenezene.
7. nitrogen oxides gas mask canister as described in claim 1, it is characterised in that: the nitrogen oxides catalysis Agent partial size and solid phase high molecular polymer adsorbent partial size respectively stand alone as 20~60 mesh.
8. nitrogen oxides gas mask canister as described in claim 1, it is characterised in that: the nitrogen oxides catalysis Agent and solid phase high molecular polymer adsorbent are respectively charged into cotton mesh bag and then are filled in upper tank body and lower tank respectively.
9. nitrogen oxides gas mask canister as described in claim 1, it is characterised in that: the upper tank body and lower tank Body is using threaded connection.
CN201910612932.4A 2019-07-09 2019-07-09 A kind of nitrogen oxides (NOX) gas mask canister Pending CN110433412A (en)

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WO1998018540A1 (en) * 1996-10-28 1998-05-07 Airguard Industries, Inc. Method and apparatus for rejuvenating contaminated filter elements
CN204034076U (en) * 2014-08-01 2014-12-24 西安科技大学 Down-hole anti-virus device
CN105251152A (en) * 2015-11-14 2016-01-20 无锡清杨机械制造有限公司 Breathing mask capable of filtration and purification
CN207412538U (en) * 2017-09-08 2018-05-29 南通强生安全防护科技股份有限公司 Two-part easily replaces the modularization canister of filter material
CN108579368A (en) * 2018-03-13 2018-09-28 浙江工业大学 A kind of solid state chemistry absorption techniques purification nitrogen oxides

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Application publication date: 20191112