CN106422727A - Full-automatic purification device for laboratory acid mist exhaust gas - Google Patents
Full-automatic purification device for laboratory acid mist exhaust gas Download PDFInfo
- Publication number
- CN106422727A CN106422727A CN201611027133.3A CN201611027133A CN106422727A CN 106422727 A CN106422727 A CN 106422727A CN 201611027133 A CN201611027133 A CN 201611027133A CN 106422727 A CN106422727 A CN 106422727A
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- Prior art keywords
- exhaust gas
- pipe
- shower
- filler layer
- water tank
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2047—Hydrofluoric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/124—Liquid reactants
Abstract
The invention discloses a full-automatic purification device for laboratory acid mist exhaust gas and relates to the technical field of exhaust gas treatment. The full-automatic purification device comprises an exhaust gas collection main pipeline and a plurality of exhaust gas collection branch pipelines, wherein two draught cupboards are respectively arranged at the input end of each exhaust gas collection branch pipeline, and the output end of the exhaust gas collection main pipeline is connected with an air inlet in the lower portion of a purification tower; the purification tower comprises a shell, an upper spray pipe, a lower spray pipe, a first Pall ring filler layer and a second Pall ring filler layer, an exhaust gas outlet is formed in the upper end of the shell and provided with a demister, the demister is connected with a discharging pipe through a variable-frequency fan, the upper spray pipe and the lower spray pipe are connected with the output end of a circulating water pump respectively through circulating fluid inlet pipes, the input end of the circulating water pump is connected with a circulating water tank, the input end of the circulating water tank is connected with the lower portion of the purification tower, the circulating water tank is connected with the output end of a chemical adding pump through a chemical adding pipe, and the input end of the chemical adding pump is connected with a sodium hydroxide absorption liquid storage tank. The full-automatic purification device is low in energy consumption, high in purification efficiency and wide in applicable range.
Description
Technical field
The present invention relates to the process draining technology of the processing technology field of waste gas, particularly laboratory acid mist waste gas.
Background technology
Laboratory acid mist waste gas refers to that some have the vaporific acidic materials compared with severe corrosive, is typically distributed in the air
Acid mist granule very little, its particle diameter is less than 10 μm.The granule comparing mist is less, but the humidity higher than cigarette, it is between water smoke and cigarette
Pollutant between gas.The formation of laboratory acid mist waste gas mainly has two kinds of approach, and one is the evaporation on acid solution surface, acid molecule
Air inlet, absorbs moisture and condenses and form acid mist and drip, two is to have chemical reaction in acid solution and produce bubble, and bubble is floating
Go out explosion after liquid level, dropping liquid is taken out of and forms acid mist in the air.
The laboratory of the industries such as mine, geology, environment, metallurgy and research department commonly use hydrochloric acid, nitric acid, sulphuric acid and other acid,
The acid waste gas discharged during heat treated and acid are boiled.Most laboratory acid mist waste gas are not using through fume hood at present
Through administering the mode of directly discharge, or roof is focused on using pipeline, the mode that blower fan directly discharges, the laboratory also having adopts
Distributing exhaust fan directly discharges.Though concentrate directly discharging the working environment of operator of minor betterment to a certain extent,
But still directly pollution is caused to air, severely impact the ecological environment of surrounding area.
Government all extremely pays close attention to the exhaust-gas treatment to large-scale industrial production always, but often ignores at laboratory exhaust gas
Reason.Although the latter's discharge capacity is typically small, long term accumulation, its summation is also extremely considerable.And, it is different from standardized
Industrial flow, the species of contained pollutant and concentration often more various and difficult survey in laboratory exhaust gas, more likely produce one
There is the chemical substance of specific toxicity a bit, with the presence of extremely serious potential danger.Domestic existing master gas equipment is all
The sour gas asked for factory's acid treatment car carries out administering the acid mist that this acid is at normal temperatures, is single acid, as laboratory
So measure the waste gas of little dispersion, high-temperature heating, several acid mixing with acid, all there is no the treatment facility of boil on the nape opposite the mouth although so, but state
Some units interior are directed to the feature of laboratory acid waste gas it is proposed that crossing some resolutions.Due to experimental waste liquid complicated component,
Using traditional preferable treatment effect of handling process difficult to reach.Therefore, it is necessary to the waste gas that laboratory is produced is acted upon,
To reach discharge standard.
Content of the invention
Present invention aim at being directed to problem above, provide that a kind of structure is simple, energy consumption is low, purification efficiency is high and applicable model
Enclose wide laboratory acid mist waste gas Full automatic purifying device.
The present invention includes gas sampling main pipeline, some gas sampling branch pipe(tube)s, the gas sampling arm described in every
The outfan in road is connected on gas sampling main pipeline；It is respectively provided with two on gas sampling branch pipe(tube) described at every
Fume hood, is respectively provided with motorized adjustment air-valve between each described fume hood and gas sampling branch pipe(tube)；Described gas sampling
The outfan of main pipeline connects the air inlet of purifying column bottom；
Described purifying column includes housing, upper shower, lower shower, the first Pall ring filler layer, the second Pall ring filler layer；Institute
State shower, the first Pall ring filler layer, lower shower and the second Pall ring filler layer along body height direction from top to bottom
It is sequentially arranged；On shower, spiral nozzle is set on described, spiral nozzle under arranging on described lower shower；Described
At least one visor, at least one manhole are respectively equipped with housing；In described purifying column inner chamber bottom, glass tubing liquid level is set
Meter；End is provided with waste gas outlet on the housing, arranges demister in described waste gas outlet；Described demister passes through frequency conversion fan
It is connected with delivery pipe, acoustic filter is set between described delivery pipe and frequency conversion fan；
Described upper shower, lower shower connect the outfan of water circulating pump respectively by circulation fluid water inlet pipe, in described circulation
Setting regulating valve, effusion meter on liquid water inlet pipe；The input of described water circulating pump is connected with cyclic water tank；Described cyclic water tank
Input is connected with the bottom of purifying column by connecting tube；The lower case of described purifying column is additionally provided with atmospheric valve；
Described cyclic water tank connects the outfan of dosing pump by chemical feed pipe, and the input of described dosing pump connects sodium hydroxide and inhales
Receive liquid storage tank；In the inner chamber of described sodium hydroxide absorbing liquid storage tank, blender is set；Described sodium hydroxide absorbing liquid storage tank passes through
Water supply pipe connects tap water and arranges tap water electrodynamic valve on water supply pipe.
When using, every layer of laboratory building arranges two sets of fume hoods to the present invention, according to experiment number of floor levels setting fume hood quantity,
It is equipped with motorized adjustment air-valve above each fume hood, when COMPUTER DETECTION to laboratory building fume hood is opened, led to according to laboratory building
Wind cupboard opens total amount, automatically controls motorized adjustment air-valve open degree, in the state of negative pressure, the waste gas in fume hood is passed through three
In logical suction gas-collecting branch pipe.Every layer of laboratory building is provided with a gas-collecting branch pipe, and in the state of negative pressure, the waste gas in gas-collecting branch pipe enters
Enter gas gathering manifold.
Sodium hydroxide absorbing liquid storage tank is crossed dosing pump using PP Gutron and is connected with cyclic water tank.Sodium hydroxide absorbing liquid storage tank
Signal is reached computer by affiliated liquidometer, and when liquid level is less than certain value, tap water electric control valve is opened, and starts simultaneously and stirs
The machine of mixing is stirred, and blender rotating speed is set to 120 revs/min（Rotating speed can pass through to become according to time situation setting computer parameter
Frequency blower fan adjusts）.
Cyclic water tank is crossed circulating pump using PP Gutron and is connected with shower, lower shower on purifying column, using connecting tube with
Purifying column bottom connects.Signal is reached computer by the affiliated ultrasonic level gage of cyclic water tank, when liquid level is less than certain value, opens
Dynamic dosing pump adds sodium hydroxide absorbing liquid into cyclic water tank.Signal is reached meter by cyclic water tank affiliated PH meter, conductivity meter
Calculation machine, it is too low to carry out alarm absorbing liquid concentration, need to add sodium hydroxide to sodium hydroxide absorbing liquid storage tank.
The purifying column emission-control equipment method of operation is to open quantity according to laboratory building fume hood, signal is reached calculating
Machine, automatically controls circulating pump and circulation fluid electric control valve open degree, the absorbing liquid in cyclic water tank is promoted on purifying column
In shower and lower shower.Sodium hydroxide absorbing liquid nebulizes through upper spiral nozzle from upper shower and pours in filler, under
Shower nebulizes through upper spiral nozzle and pours in filler.Unnecessary absorbing liquid drops to purification tower bottom through connecting tube from filler
Enter cyclic water tank, complete the cyclic process of sodium hydroxide absorbing liquid.Waste gas is adopted gas gathering manifold to be entered by air inlet and purifies
Tower bottom, in the presence of frequency conversion fan, adverse current rises waste gas, in the wetted surface gas-to-liquid contact of filler, occurs a series of
Physico reaction, and there is mass transport process due to concentration difference, the waste gas after purification is entered by frequency conversion fan through demister dehydration
Enter delivery pipe.Blower fan is connected with delivery pipe by acoustic filter, opens quantity according to laboratory building fume hood, signal is reached calculating
Machine, automatically controls rotation speed of fan, completes the waste gas air draft after purifying.
The present invention compared with prior art, has the advantage that：
（1）For laboratory acid mist exhaust-gas treatment, typically adopt mixed processing technique, or using incineration treatment technology it is difficult to reach
To environmental requirement.The present invention adopts acid mist spray column purification process technique, can fully achieve the qualified discharge of liquid waste processing, and
Construction investment saves, and floor space is little, convenient operation and management.
（2）Frequency conversion fan, purifying column, filler, demisting layer, circulated sprinkling water lines, Full-automatic agent-feeding device etc. all adopt
Computer program controls it is achieved that the precise control of reaction condition and processing procedure is it is ensured that the waste gas index after processing reaches
Discharge standard, greatly reduces the labor intensity of operating process simultaneously.
（3）Device adopts modularized design, has stronger combined, open and extensibility.Increase fume hood number
Amount, only need to change the model specification of blower fan, and other devices then need not be changed.
（4）Treatment of laboratory acid mist waste gas effect is significant of the present invention, hydrogen chloride gas (HCl), hydrogen fluoride gas (HF), ammonia
Gas (NH3), sulfuric acid mist (H2SO4), mist of chromic acid (CrO3), hydrocyanic acid gas (HCN), alkali vapor (NaOH), hydrogen sulfide gas
(H2S) average removal rate reaches more than 90%.The present invention is applied to the integrated treatment of laboratory acid mist waste gas.
Brief description
Fig. 1 is the structural representation of the present invention.
Specific embodiment
As shown in figure 1, the present invention includes gas sampling main pipeline 1, three gas sampling branch pipe(tube)s 2, every gas sampling
The outfan of branch pipe(tube) 2 is connected on gas sampling main pipeline 1；Every gas sampling branch pipe(tube) 2 is respectively provided with two
Individual fume hood 3, is respectively provided with motorized adjustment air-valve 4 between each fume hood 3 and gas sampling branch pipe(tube) 2；Gas sampling is responsible for
The outfan in road 1 connects the air inlet 6 of purifying column 5 bottom.
Purifying column 5 includes housing 5-1, upper shower 7, lower shower 8, the first Pall ring filler layer 9, the second Pall ring are filled out
The bed of material 10；Described upper shower 7, the first Pall ring filler layer 9, lower shower 8 and the second Pall ring filler layer 10 are along housing 5-1
Short transverse is from top to bottom sequentially arranged；Upper shower 7 arranges spiral nozzle 11, spiral shell under arranging on lower shower 8
Churning mouth 12；13, two manholes 14 of two visors are respectively equipped with housing 5-1；In purifying column 5 inner chamber bottom, glass is set
Pipe liquidometer 15；It is provided with waste gas outlet 16 in housing 5-1 upper end, demister 17 is set in waste gas outlet 16；Demister 17 passes through
Frequency conversion fan 18 is connected with delivery pipe 19, arranges acoustic filter 20 between delivery pipe 19 and frequency conversion fan 18.
Upper shower 7, lower shower 8 connect the outfan of water circulating pump 22 respectively by circulation fluid water inlet pipe 21, are following
Setting regulating valve 23, effusion meter 24 on ring liquid water inlet pipe 21；The input of water circulating pump 22 is connected with cyclic water tank 25；Recirculated water
The input of case 25 is connected with the bottom of purifying column 5 by connecting tube；The lower case of purifying column 5 is additionally provided with atmospheric valve
26.
Cyclic water tank 25 connects the outfan of dosing pump 28 by chemical feed pipe 27, and the input of dosing pump 28 connects hydroxide
Sodium absorbing liquid storage tank 29；In the inner chamber of sodium hydroxide absorbing liquid storage tank 29, blender 30 is set；Sodium hydroxide absorbing liquid storage tank 29
Tap water is connected by water supply pipe 31 and tap water electrodynamic valve 32 is arranged on water supply pipe 31.
Claims (1)
1. a kind of laboratory acid mist waste gas Full automatic purifying device it is characterised in that：Including gas sampling main pipeline, some are given up
Gas collects branch pipe(tube), and the outfan of the gas sampling branch pipe(tube) described in every is connected on gas sampling main pipeline；Every
Two fume hoods are respectively provided with the gas sampling branch pipe(tube) described in root, each described fume hood and gas sampling branch pipe(tube) it
Between be respectively provided with motorized adjustment air-valve；The outfan of described gas sampling main pipeline connects the air inlet of purifying column bottom；
Described purifying column includes housing, upper shower, lower shower, the first Pall ring filler layer, the second Pall ring filler layer；Institute
State shower, the first Pall ring filler layer, lower shower and the second Pall ring filler layer along body height direction from top to bottom
It is sequentially arranged；On shower, spiral nozzle is set on described, spiral nozzle under arranging on described lower shower；Described
At least one visor, at least one manhole are respectively equipped with housing；In described purifying column inner chamber bottom, glass tubing liquid level is set
Meter；End is provided with waste gas outlet on the housing, arranges demister in described waste gas outlet；Described demister passes through frequency conversion fan
It is connected with delivery pipe, acoustic filter is set between described delivery pipe and frequency conversion fan；
Described upper shower, lower shower connect the outfan of water circulating pump respectively by circulation fluid water inlet pipe, in described circulation
Setting regulating valve, effusion meter on liquid water inlet pipe；The input of described water circulating pump is connected with cyclic water tank；Described cyclic water tank
Input is connected with the bottom of purifying column by connecting tube；The lower case of described purifying column is additionally provided with atmospheric valve；
Described cyclic water tank connects the outfan of dosing pump by chemical feed pipe, and the input of described dosing pump connects sodium hydroxide and inhales
Receive liquid storage tank；In the inner chamber of described sodium hydroxide absorbing liquid storage tank, blender is set；Described sodium hydroxide absorbing liquid storage tank passes through
Water supply pipe connects tap water and arranges tap water electrodynamic valve on water supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611027133.3A CN106422727A (en) | 2016-11-22 | 2016-11-22 | Full-automatic purification device for laboratory acid mist exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611027133.3A CN106422727A (en) | 2016-11-22 | 2016-11-22 | Full-automatic purification device for laboratory acid mist exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106422727A true CN106422727A (en) | 2017-02-22 |
Family
ID=58220880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611027133.3A Pending CN106422727A (en) | 2016-11-22 | 2016-11-22 | Full-automatic purification device for laboratory acid mist exhaust gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN106422727A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704448A (en) * | 2018-07-24 | 2018-10-26 | 宝钢股份黄石涂镀板有限公司 | A kind of strip pickling line acid mist processing system and its control method |
| CN109078458A (en) * | 2018-08-29 | 2018-12-25 | 扬州大学 | A kind of laboratory exhaust gas composite absorption adsorptive purifier |
| CN109847547A (en) * | 2019-04-08 | 2019-06-07 | 重庆中科检测技术服务有限公司 | A kind of heavy metal chelant and preparation method thereof |
| CN112504962A (en) * | 2020-12-04 | 2021-03-16 | 江苏源泉智能装备科技有限公司 | Portable electroplating workshop chromic acid fog automatic checkout device |
| CN112933930A (en) * | 2021-01-21 | 2021-06-11 | 安徽省百泰环保科技集团有限公司 | Acid mist waste gas purification tower |
| CN113304565A (en) * | 2021-05-07 | 2021-08-27 | 西南医科大学附属中医医院 | Anesthesia department is with anesthesia waste gas pump drainage device |
| CN114653710A (en) * | 2022-03-15 | 2022-06-24 | 安徽应天环保科技咨询有限公司 | Low-carbon energy-saving spraying type laboratory ventilation equipment |
| CN115155224A (en) * | 2022-06-27 | 2022-10-11 | 南京华电节能环保股份有限公司 | A high-efficient heat transfer type filter equipment for coke oven exhaust emission |
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| CN206184241U (en) * | 2016-11-22 | 2017-05-24 | 扬州大学 | Full automatically cleaned device of laboratory acid mist waste gas |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704448A (en) * | 2018-07-24 | 2018-10-26 | 宝钢股份黄石涂镀板有限公司 | A kind of strip pickling line acid mist processing system and its control method |
| CN109078458A (en) * | 2018-08-29 | 2018-12-25 | 扬州大学 | A kind of laboratory exhaust gas composite absorption adsorptive purifier |
| CN109847547A (en) * | 2019-04-08 | 2019-06-07 | 重庆中科检测技术服务有限公司 | A kind of heavy metal chelant and preparation method thereof |
| CN112504962A (en) * | 2020-12-04 | 2021-03-16 | 江苏源泉智能装备科技有限公司 | Portable electroplating workshop chromic acid fog automatic checkout device |
| CN112504962B (en) * | 2020-12-04 | 2022-09-20 | 江苏源泉智能装备科技有限公司 | Portable electroplating workshop chromic acid fog automatic checkout device |
| CN112933930A (en) * | 2021-01-21 | 2021-06-11 | 安徽省百泰环保科技集团有限公司 | Acid mist waste gas purification tower |
| CN113304565A (en) * | 2021-05-07 | 2021-08-27 | 西南医科大学附属中医医院 | Anesthesia department is with anesthesia waste gas pump drainage device |
| CN113304565B (en) * | 2021-05-07 | 2022-06-07 | 西南医科大学附属中医医院 | Anesthesia department is with anesthesia waste gas pump drainage device |
| CN114653710A (en) * | 2022-03-15 | 2022-06-24 | 安徽应天环保科技咨询有限公司 | Low-carbon energy-saving spraying type laboratory ventilation equipment |
| CN115155224A (en) * | 2022-06-27 | 2022-10-11 | 南京华电节能环保股份有限公司 | A high-efficient heat transfer type filter equipment for coke oven exhaust emission |
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Application publication date: 20170222 |