CN105935525A - Air filtering system and filtering method thereof in nitric acid production - Google Patents

Air filtering system and filtering method thereof in nitric acid production Download PDF

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Publication number
CN105935525A
CN105935525A CN201610488058.4A CN201610488058A CN105935525A CN 105935525 A CN105935525 A CN 105935525A CN 201610488058 A CN201610488058 A CN 201610488058A CN 105935525 A CN105935525 A CN 105935525A
Authority
CN
China
Prior art keywords
filter
air
filtering
nitric acid
acid production
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
CN201610488058.4A
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Chinese (zh)
Inventor
孙世全
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.)
Tianjin City Po Moist Chemical Co Ltd
Original Assignee
Tianjin City Po Moist Chemical 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 Tianjin City Po Moist Chemical Co Ltd filed Critical Tianjin City Po Moist Chemical Co Ltd
Priority to CN201610488058.4A priority Critical patent/CN105935525A/en
Publication of CN105935525A publication Critical patent/CN105935525A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0019Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/0023Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • 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
    • B01D53/04Separation 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
    • 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
    • B01D2253/102Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/80Water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/06Polluted air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2267/00Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
    • B01D2267/40Different types of filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2267/00Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
    • B01D2267/70Horizontal arrangement

Abstract

The invention discloses an air filtering system and a filtering method thereof in the nitric acid production, and relates to the technical field of nitric acid production. The air filtering system comprises a plurality of air filtering devices and a controller. The controller controls the air filtering devices to open/close. The air filtering devices are arranged on the top of nitric acid production equipment. Each air filtering device comprises a shell, a filter core, and a filter core frame. The filter core and the filter core frame are arranged in the shell. Each air filtering device is provided with an air inlet and an air outlet. The filter core is arranged between the air inlet and the air outlet. The air inlet and the air outlet are respectively provided with a first fan and a second fan. The filter core frame and the shell are detachably connected. The filter core is a serpentine filtering pipe. The inlet of the filter core is provided with a first filtering screen. An active carbon filtering layer is arranged in the filter core. The outlet of the filter core is provided with a second filtering screen. The size of the filtering holes of the first filtering screen is bigger than the size of the filtering holes of the second filtering screen. The provided air filtering system can effectively filter impurities in nitric acid production to make production become smooth and reduces the production cost.

Description

Air filtering system in a kind of nitric acid production and filter method thereof
Technical field
The present invention relates to nitric acid production technical field, particularly relate to the air mistake in a kind of nitric acid production Filter system and filter method thereof.
Background technology
Nitric acid is a kind of widely used industrial chemicals, and its main production raw material is ammonia and air, but It is as a kind of primary raw material producing nitric acid, containing substantial amounts of impurity in air, such as steam, ash Dirt, greasy dirt or other foreign gas, these impurity enter in nitric acid producing system, can reduce catalysis The activity of agent, makes catalyst poisoning, causes the waste of raw materials for production, or affects working condition so that Product can not produce smoothly, affects device capbility, increases production cost.
Summary of the invention
It is an object of the invention to provide a kind of can air filtration system in the nitric acid production of effective impurity screening System, to solve above-mentioned problems of the prior art, makes product produce smoothly, reduces and produces into This.
For achieving the above object, the invention provides following scheme:
Air filtering system in a kind of nitric acid production and filter method thereof, including multiple air filters and Controller, described controller controls the opening and closing of described air filter, and described filter is arranged At the top of nitric acid production equipment, described air filter includes housing, filter element and filter element frame, institute Stating filter element and described filter element frame is positioned at described enclosure interior, described air filter is provided with air inlet And air outlet, described filter element is arranged between described air inlet and described air outlet, described air inlet and The first fan and the second fan, described filter element frame and described housing it is respectively arranged with at described air outlet For removably connecting, described filter element is snakelike filter tube, and the import department of described filter element is provided with the first mistake Filter screen, described filter element is internally provided with activated carbon filter layer, and the exit of described filter element is provided with second Drainage screen, the pore size filter size of described first drainage screen is more than the filtering holes of described second drainage screen Footpath.
Preferably, described filter element frame is aluminium chassis or nickel chromium stainless steel framework.
Preferably, being provided with drip tray bottom the inwall of described filter element, described drip tray connects water outlet Pipe, is discharged the water produced after filter element filtering by described outlet pipe, described outlet pipe and described hydrops Dish junction is provided with unlatching valve, and described unlatching valve is provided with humidity sensor, and described unlatching valve is with described Controller connects.
Preferably, clamp connection is passed through between described filter element and described filter element frame.
Preferably, described air inlet is provided with protective grille, and described first drainage screen is positioned at described guarantor Protect grid rear portion.
Preferably, multiple filter element it has been arranged side by side between described air inlet and described air outlet.
Preferably, described activated carbon filter layer is arranged on described filter element inwall.
The invention discloses techniques below effect:
Air filtering system in the nitric acid production that the present invention provides is including multiple air filters, many Individual filter works simultaneously, can increase air imbibed quantity and circulation area thereof, and it is right to meet in actual production The demand of air mass flow.During nitric acid production, production equipment can produce hot-air, steam, Oil smoke or other foreign gas, a large amount of dusts that in production process, can kick up in ground, these gases easily quilt Air filter sucks, thus causes the dust sucked in air can not filter completely totally.Filter Be arranged on the top of nitric acid production equipment, can reduce air filter to above-mentioned foreign gas and inhale Enter, improve the air source quality sucking air filter.It is respectively arranged with at air inlet and air outlet First fan and the second fan, can strengthen air filter and suck the power of air, increase air Source, meets Production requirement.Filter element frame and housing are for removably connecting, it is simple to change filter element.Filter element For snakelike filter tube, air can be strengthened in the mobility within filter element, increase air filtration area, Realize more preferable filter effect.The import department of filter element is provided with the first drainage screen, can realize air Preliminary filtration, leaches the large granular impurity in air.Filter element is internally provided with activated carbon filter layer, can Absorb the foreign gas in air and steam.The exit of filter element is provided with the second drainage screen, can be right Air after filtration filters again, improves filter effect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below by right In embodiment, the required accompanying drawing used is briefly described, it should be apparent that, attached in describing below Figure is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying On the premise of creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the air filter in the embodiment of the present invention;
In figure: 1-housing, 2-filter element, 21-the first drainage screen, 22-activated carbon filter layer, 23-second Drainage screen, 3-filter element frame, 31-clip, 4-air inlet, 41-the first fan, 42-protective grille, 5- Air outlet, 51-the second fan, 6-drip tray, 7 outlet pipes, 8-open valve.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered Row clearly and completely describes, it is clear that described embodiment is only that a part of the present invention is implemented Example rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained under not making creative work premise, broadly falls into the present invention and protects The scope protected.
It is an object of the invention to provide the generating dress of the angle of a kind of self-adjustable solar panel Put, improve the work efficiency of device of solar generating.
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with attached The present invention is further detailed explanation with detailed description of the invention for figure.
Air filtering system in a kind of nitric acid production and filter method thereof, including multiple air filters and Controller, controller controls the opening and closing of air filter, and multiple filters work simultaneously, can Increase air imbibed quantity and circulation area thereof, meet the demand to air mass flow in actual production.Filter Device is arranged on the top of nitric acid production equipment, and during nitric acid production, production equipment can produce heat Air, steam, oil smoke or other foreign gas, a large amount of dusts that in production process, can kick up in ground, These gases are easily sucked by air filter, thus cause the dust sucked in air not filter completely Totally.Filter is arranged on the top of nitric acid production equipment, can reduce air filter to above-mentioned impurity Gas and suck, improve suck air filter air source quality.Air filter includes shell It is internal that body 1, filter element 2 and filter element frame 3, filter element 2 and filter element frame 3 are positioned at housing 1, air mistake Filter is provided with air inlet 4 and air outlet 5, and filter element 1 is arranged between air inlet 4 and air outlet 5, It is respectively arranged with the first fan 41 and the second fan 51 at air inlet 4 and air outlet 5, can strengthen Air filter sucks the power of air, increases air source, meets Production requirement.Filter element frame 3 with Housing 1 is for removably connecting, it is simple to change filter element.Filter element 2 is snakelike filter tube, can strengthen sky Gas, in the mobility within filter element, increases air filtration area, it is achieved preferably filter effect.Filter element The import department of 2 is provided with the first drainage screen 21, can realize the preliminary filtration to air, leach in air Large granular impurity.Filter element 2 is internally provided with activated carbon filter layer 22, the impurity in absorbable air Gas and steam.The exit of filter element 2 is provided with the second drainage screen 23, the first drainage screen 21 Pore size filter size is more than the pore size filter of the second drainage screen 23, and the second drainage screen 23 can be to the first mistake The most filtrable granule of filter screen 21 filters again, improves filter effect.
Filter element frame 3 is aluminium chassis or nickel chromium stainless steel framework, and air filter can be avoided to be corroded, Avoid the generation of rust, it is to avoid the rust come off after having corrosion enters nitric acid production equipment, affects nitric acid Normal production.
Being provided with drip tray 6 bottom the inwall of filter element 2, drip tray connects outlet pipe 7, passes through water outlet The water that pipe 7 produces after being filtered by filter element 2 is discharged, and outlet pipe 7 and drip tray 6 junction are provided with unlatching Valve 8, opens valve 8 and is provided with humidity sensor, opens valve and is connected with controller.Can periodically by The steam of filter absorbed inside is discharged, it is to avoid moisture overstocks and enters in production equipment.
It is connected by clip 31 between filter element 2 with filter element frame 3, facilitates replacing and the peace of filter element 2 Dress.
Protective grille 42 it is provided with, after the first drainage screen 21 is positioned at protective grille 42 at air inlet 4 Portion, can play a protective role to drainage screen, it is to avoid the suction of huge particulate matter, protection the first filtration Net 21 will not be crushed by effect of impact.
It is arranged side by side multiple filter element 2 between air inlet 4 and air outlet 5, strengthens the filtration energy of filter Power.
Activated carbon filter layer 22 is arranged on filter element 2 inwall, and activated carbon filter layer 22 distribution area is able to Increasing, air filtration area increases, and can realize more preferable filter effect.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses Being all the difference with other embodiments, between each embodiment, identical similar portion sees mutually i.e. Can.For system disclosed in embodiment, owing to it corresponds to the method disclosed in Example, institute Fairly simple with describe, relevant part sees method part and illustrates.
The application applies specific case principle and the embodiment of the present invention are set forth, with The explanation of upper embodiment is only intended to help to understand method and the core concept thereof of the present invention;Meanwhile, right In one of ordinary skill in the art, according to the thought of the present invention, at detailed description of the invention and application model Place and all will change.In sum, this specification content should not be construed as the limit to the present invention System.

Claims (7)

1. the air filtering system in a nitric acid production and filter method thereof, it is characterised in that: include Multiple air filters and controller, described controller controls unlatching and the pass of described air filter Closing, described filter is arranged on the top of nitric acid production equipment, described air filter include housing, Filter element and filter element frame, described filter element and described filter element frame are positioned at described enclosure interior, described air Filter is provided with air inlet and air outlet, and described filter element is arranged on described air inlet and described air outlet Between, it is respectively arranged with the first fan and the second fan at described air inlet and described air outlet, described Filter element frame and described housing are for removably connecting, and described filter element is snakelike filter tube, described filter element Import department is provided with the first drainage screen, and described filter element is internally provided with activated carbon filter layer, described filter element Exit be provided with the second drainage screen, the pore size filter size of described first drainage screen is more than described the The pore size filter of two drainage screens.
Air filtering system in nitric acid production the most according to claim 1 and filter method thereof, It is characterized in that: described filter element frame is aluminium chassis or nickel chromium stainless steel framework.
Air filtering system in nitric acid production the most according to claim 1 and filter method thereof, It is characterized in that: be provided with drip tray bottom the inwall of described filter element, described drip tray connects water outlet Pipe, is discharged the water produced after filter element filtering by described outlet pipe, described outlet pipe and described hydrops Dish junction is provided with unlatching valve, and described unlatching valve is provided with humidity sensor, and described unlatching valve is with described Controller connects.
Air filtering system in nitric acid production the most according to claim 1 and filter method thereof, It is characterized in that: between described filter element and described filter element frame, pass through clamp connection.
Air filtering system in nitric acid production the most according to claim 1 and filter method thereof, It is characterized in that: described air inlet is provided with protective grille, described first drainage screen is positioned at described guarantor Protect grid rear portion.
Air filtering system in nitric acid production the most according to claim 1 and filter method thereof, It is characterized in that: between described air inlet and described air outlet, be arranged side by side multiple filter element.
Air filtering system in nitric acid production the most according to claim 1 and filter method thereof, It is characterized in that: described activated carbon filter layer is arranged on described filter element inwall.
CN201610488058.4A 2016-06-27 2016-06-27 Air filtering system and filtering method thereof in nitric acid production Pending CN105935525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610488058.4A CN105935525A (en) 2016-06-27 2016-06-27 Air filtering system and filtering method thereof in nitric acid production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610488058.4A CN105935525A (en) 2016-06-27 2016-06-27 Air filtering system and filtering method thereof in nitric acid production

Publications (1)

Publication Number Publication Date
CN105935525A true CN105935525A (en) 2016-09-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610488058.4A Pending CN105935525A (en) 2016-06-27 2016-06-27 Air filtering system and filtering method thereof in nitric acid production

Country Status (1)

Country Link
CN (1) CN105935525A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107051197A (en) * 2017-06-23 2017-08-18 张柯 Efficient air purifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107051197A (en) * 2017-06-23 2017-08-18 张柯 Efficient air purifier
CN107051197B (en) * 2017-06-23 2019-01-04 张柯 Efficient air purifier

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Application publication date: 20160914