CN206198954U - A kind of processing unit of pernicious gas - Google Patents
A kind of processing unit of pernicious gas Download PDFInfo
- Publication number
- CN206198954U CN206198954U CN201620488123.9U CN201620488123U CN206198954U CN 206198954 U CN206198954 U CN 206198954U CN 201620488123 U CN201620488123 U CN 201620488123U CN 206198954 U CN206198954 U CN 206198954U
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- Prior art keywords
- absorption tower
- absorbing liquid
- tower
- absorption
- circulating pump
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- Gas Separation By Absorption (AREA)
Abstract
A kind of processing unit of pernicious gas, the pernicious gases such as ketone and aldehyde are more particularly to removed from air-flow, belong to Air Pollution Control and environmental protection technical field, it is characterized in that being described device by water circulating pump, absorption tower, absorption tower circulating water chennel, absorbing liquid oxygen-eliminating device and reactor are constituted, its processing method is that the processed air-flow containing pernicious gas is imported absorption tower to be absorbed by the aqueous solution, then the solution of absorption pernicious gas after described absorbing liquid oxygen-eliminating device, import described reactor and chemically reacted with the sodium hydrogensulfite medicament for adding, generation sulfonate, so that absorbed harmful gas concentration declines in absorbing liquid, absorbability is recovered, return to absorption tower absorption, it is high with removal efficiency, operating cost is low, recyclable accessory substance, it is simple to operate, it is adapted to promote the use of.
Description
Technical field
The utility model is related to a kind of processing unit of pernicious gas, and harmful gas such as ketone and aldehyde is more particularly to removed from air-flow
Body, belongs to Air Pollution Control and environmental protection technical field.
Background technology
It is various containing pernicious gases such as volatile organic matter such as aldehyde and ketone, result from chemistry, pharmacy, printing and spraying etc. it is various
Production process.These pollutants are not only harmful to human body, and a large amount of discharges also generate serious influence to atmospheric environment, are photochemical
Learn one of main component of mist.But relatively stablize due to these gases or with chemical constitution, the characteristics of not degradable, or threshold value
It is relatively low, bring very big difficulty to purified treatment.
It is one of the main method for removing these pernicious gases using aqueous solution absorption process, investment and operating cost are low, but
The subject matter of the method is limited absorptive capacity, and absorbing liquid is easily saturated.Solution after absorption must be processed further, if directly
Wastewater disposal basin is picked back, the product after being processed by absorption can be evaporated again, it will cause the generation of secondary pollution.How to improve
While absorption efficiency, the generation that secondary pollution is avoided again is urgent problem in the skilled industry application process.Combustion
Burning method is higher to service condition requirement, and general to require to run at high temperature, investment and running cost expense are high.Absorption method is to low concentration
Pollutant removing efficiency it is higher, but be unable to reach the purpose of resolving harmful gas, adsorbent reactivation and aftertreatment systems are multiple
It is miscellaneous, and have inflammable and explosive danger.Therefore, find that removal efficiency is high, reliable and operation for different pernicious gas
Simple treatment technology, is related industrial process urgent problem.
The utility model is designed and there is provided a kind of processing unit of pernicious gas, for removing ketone and aldehyde etc. from air-flow
Pernicious gas, so as to reach the purpose of cleaning harmful gas.
The content of the invention
The technical solution of the utility model is：A kind of processing unit of pernicious gas, it is characterized in that by described device by
Water circulating pump, absorption tower, absorption tower circulating water chennel, absorbing liquid oxygen-eliminating device and reactor composition, wherein described water circulating pump leads to
Cross circulating pump discharge pipe to be connected with absorption tower inlet, absorption tower liquid outlet is connected by drain pipe with absorbing liquid oxygen-eliminating device,
By being connected with reactor communicating pipe, absorbing liquid oxygen-eliminating device top is provided with muffler and connects with absorption tower tower body absorbing liquid oxygen-eliminating device
Logical, bottom is provided with aeration tube, and described reactor is provided with medicament and adds mouth and leakage fluid dram, and described reactor is by absorbing
Tower communicating pipe is connected with absorption tower circulating water chennel, and absorption tower circulating water chennel is connected by water circulating pump feed tube with water circulating pump.
According to a kind of processing unit of above-mentioned pernicious gas, its processing method is the processed gas containing pernicious gas
Conductance enters absorption tower and is absorbed by the aqueous solution, and the solution of absorption pernicious gas is then imported reactor with the sodium hydrogensulfite for adding
Medicament chemically reacts, and generates sulfonate so that absorbed harmful gas concentration declines in absorbing liquid, has recovered absorption energy
Power, returns to absorption tower absorption.The sulfonate for being generated in absorbing liquid close to or up saturation after, absorbing liquid is imported cold
But device crystallisation by cooling obtains solid sulfoacid salt, and separation of solid and liquid, absorbing liquid regains absorbability, can be recycled after heating up.
Absorbing liquid containing sulfonate can also be imported regenerative response kettle, sodium carbonate or NaOH are added in a kettle., make sulfonic acid
Salt is re-converted into aldehyde and ketone, then absorbing liquid vacuum distillation after, recyclable corresponding aldehyde and ketone, cooling absorbing liquid can be obtained
Crystallized to sodium sulfite and separated out, then to being passed through sulfur dioxide in residual absorption liquid so that the sodium sulfite in solution is converted into Asia
After niter cake, described reactor can be added to use as medicament.
It is beneficial that absorbing liquid oxygen-eliminating device is additionally provided with described technical scheme between absorption tower liquid outlet and reactor,
For removing the dissolved oxygen contained in absorbing liquid, to improve the utilization rate of sodium sulfite, removing dissolved oxygen can be used and add reduction
The mode such as agent and air lift, air lift typically uses nitrogen or argon gas, can be exposed by the aerator being arranged in absorbing liquid oxygen-eliminating device
Gas removes the dissolved oxygen in absorbing liquid, and the gas discharged after aeration can send re-absorption in absorbing tower back to and process by muffler.Expose
Tolerance can depend on actual need selection, not have particular requirement, and when absorbing liquid oxygen content is smaller, aeration can be smaller, such as absorbing liquid temperature
Higher, when more than 30 DEG C, dissolved oxygen is smaller in absorbing liquid, also can be without oxygen-eliminating device.Adding the method for reducing agent can use Asia
Iron ion etc. is used as reducing agent.
Absorption tower described in the utility model can use general gas-liquid mass transfer (contact) equipment such as spray column, packed tower, bubble tower
With plate column etc., specifically can be referring to related chemical industry equipment handbook.Illustrated by taking packed tower as an example, tower material is acid resisting material, typically
Be fiberglass or polypropylene, pending gas is imported from tower bottom, by gas distributor, through gas liquid reaction area with from absorption tower
There is absorbing reaction in the absorbing liquid that top adds, the harmful substance in gas is absorbed, and purified gas is by absorption tower top
Discharge.Enter reactor by the absorbing liquid after gas liquid reaction, chemically reacted with the sodium hydrogensulfite for adding, generate sulfonic acid
Salt, then through the absorbing liquid water circulating pump on absorption tower, spray-absorption again.Gas-liquid contact in absorption tower described in the utility model
Time is generally more than 0.5s, preferably 1s-30s, the specific visual parameter setting such as pernicious gas species and clearance, time of contact
More long, clearance is higher.The effect of described reactor is to make absorbed aldehydes or ketones and the bisulfite for adding in absorbing liquid
Sodium chemically reacts, and generates water-soluble sulfonate, the chemical reaction metering mole of bisulfite and absorbed pernicious gas
Than being generally 1: 1.Described structure of reactor is generally cylinder or square tube, more than absorbing liquid reaction time 1s, preferably
10s-600s, can specifically determine, general described has according to the temperature of absorbed concentration of harmful substance and absorbing liquid in absorbing liquid
Evil thing concentration is low, and the reaction time can be short, and absorbing liquid temperature is high, and the reaction time also can be shorter, and initial absorption liquid is generally clear water,
It is faintly acid that pH can suitably be adjusted.
Described sulfonate reach saturation in absorbing liquid after regeneration, can be using being carried out in the general reactor of chemical industry.
Reactor is imported in absorbing liquid (generally saturation or close to saturation) solution containing sulfonate what absorption process was generated, is cooled down
Crystallization, obtains solid sulfoacid salt, then filters, and after separation of solid and liquid, solid can be used as Product recycling, and remaining absorbing liquid heats up
Absorbability just can be regained afterwards.The chilling temperature of described crystallisation by cooling is generally less than 20 DEG C, preferably 0-5 DEG C.
Described sulfonate reach saturation in absorbing liquid after regeneration, can also be carried out using another technique, i.e., first full
The water-soluble sulfonic acids salting liquid of sum imports reactor, and sodium carbonate or NaOH are added in reactor, is re-converted into it
Aldehyde and ketone, then after vacuum distillation and condense, recyclable corresponding aldehyde and ketone, then after absorbing liquid is cooled down, can obtain sulfurous acid
Sodium crystallization is separated out, and is then filtered, and after separation of solid and liquid, solid can be used as Product recycling.Again to being passed through titanium dioxide in residual absorption liquid
Sulphur so that after sodium sulfite is converted into sodium hydrogensulfite, can add reactor cycles to use as medicament.
Pernicious gas described in the utility model is mainly one or more mixtures of ketone and aldehydes organic matter, in air-flow
In concentration without particular/special requirement, in waste gas common concentration be tens milligrams/cube to thousands of milligrams/cube.
Compared with prior art, the utility model has the advantage of：The utility model is using first pernicious gas by water
Solution absorbs, then after the middle pernicious gas of absorbing liquid and sodium hydrogensulfite reaction generation water-soluble sulfonate, so as to from gas
It is removed in stream, reaction and absorption is carried out respectively, it is to avoid sodium hydrogensulfite is greatly improved by the dioxygen oxidation in air
Absorption efficiency, and the accessory substance such as recyclable sulfonate, reactant sodium hydrogensulfite are also renewable.With removal efficiency it is high,
Operating cost is low, simple to operate, is adapted to promote the use of.
Brief description of the drawings
Fig. 1 is a kind of processing unit schematic diagram of pernicious gas used by the utility model embodiment, wherein：1 water circulating pump；
2 water circulating pump feed tubes；3 absorption tower circulating water chennels；4 filling openings；5 gas feeds；6 circulating pump discharge pipes；7 absorption tower feed liquors
Mouthful；8 gas vents；9 absorption tower tower bodies；10 absorption tower liquid outlets；11 drain pipes；12 mufflers；13 absorbing liquid oxygen-eliminating devices；14 expose
Tracheae；15 communicating pipes；16 reactors；17 medicaments add mouth；18 absorption tower communicating pipes；19 leakage fluid drams.
Described water circulating pump 1 is connected by circulating pump discharge pipe 6 with absorption tower inlet 7, absorption tower liquid outlet 10
Connected with absorbing liquid oxygen-eliminating device 13 by drain pipe 11, absorbing liquid oxygen-eliminating device 13 is inhaled by being connected with reactor 16 communicating pipe 15
The top of receipts liquid oxygen-eliminating device 13 is provided with muffler and is connected with absorption tower tower body 9, and bottom is provided with aeration tube 14 and is passed through nitrogen or argon
Gas air lift removes the dissolved oxygen in absorbing liquid, and sodium hydrogensulfite medicament adds mouth 17 to add reactor 16, reactor by medicament
16 with absorption tower circulating water chennel 3 by connecting absorption tower communicating pipe 18, and absorption tower circulating water chennel 3 passes through water circulating pump feed tube 2
Connected with water circulating pump, reactor 3 is additionally provided with leakage fluid dram 19.
Specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1：A kind of processing unit of pernicious gas described in the utility model is as shown in Figure 1.Absorption tower is filler
Tower, material PP, tower diameter is Φ 250mm, fills the cascade rings of Φ 25, and bed stuffing height is about 1500mm.Absorbing liquid oxygen-eliminating device and anti-
Device is answered to be cylinder type, appearance and size is Φ 600mm × 1000mm, horizontal placement.
Processing technological flow is as follows：Air-flow containing pernicious gas is imported by absorbing tower lower gas import 5, by absorbing
The packing material absorbing area of tower tower body 9 and absorbing liquid gas-liquid contact, pernicious gas are absorbed, and air-flow is gone out by absorption tower upper gas after purification
Mouth 8 is discharged.Absorbing liquid after gas-liquid contact absorption imports absorbing liquid oxygen-eliminating device 13 by absorption tower liquid outlet 10 through drain pipe 11,
The aeration tube 14 of the bottom of absorbing liquid oxygen-eliminating device 13 is passed through the dissolved oxygen during nitrogen air lift removes absorbing liquid, by absorbing liquid oxygen-eliminating device
Absorbing liquid by communicating pipe 15 enter reactor 16, while sodium hydrogensulfite medicament by medicament addition mouth 17 add reaction
Device 16 chemically reacts with the absorbed pernicious gas in absorbing liquid, and reacted absorbing liquid is entered through absorption tower communicating pipe 19
Enter absorption tower circulating water chennel 3, then by water circulating pump feed tube 2, water circulating pump 1, water circulating pump drain pipe 6 and absorption tower feed liquor
Mouthfuls 7 return absorption tower reuptakes pernicious gas, and absorbing liquid absorbs after saturation can be by being arranged on the leakage fluid dram of the bottom of reactor 16
19 are sent to subsequent processing is further processed.
Experiment condition is：Carrier gas is air, flow about 100m3/ h, gas-liquid contact time about 2-3s, gas relative humidity is about
80%, 35 DEG C of gas temperature；Pump flow about 1m3/ h, gas concentration analysis method is gas-chromatography, stable operation one hour
After determine.Nitrogen aeration rate is about 10L/min.Initial absorption liquid is clear water, addition about 800kg.Reactor residence time is about
20s。
Experimental result is as shown in table 1.
The pernicious gas removal effect of table 1
Embodiment 2：
The renovation process 1 of absorbing liquid：Saturation sulfonate absorbing liquid that above-mentioned absorption butanone obtains is taken (or close to saturation, matter
Amount concentration about 40% or more) 500mL, beaker (may be regarded as reactor) is added, about 3-5 DEG C is cooled to, after standing about 15 minutes,
There is solid sulfoacid salt to crystallize to separate out, then suction filtration, separation of solid and liquid, solid can be used as Product recycling, and remaining absorbing liquid heats up
Absorbability just can be regained afterwards.
Embodiment 3：
The renovation process 2 of absorbing liquid：Saturation sulfonate absorbing liquid that above-mentioned absorption formaldehyde obtains is taken (or close to saturation, matter
Amount concentration about 40% or more) 500mL, beaker (may be regarded as reactor) is added, sodium carbonate about 120g or hydrogen are added in beaker
Sodium oxide molybdena about 70g (slightly excessive), reaction makes it be re-converted into formaldehyde, then after vacuum distillation and condenses, recyclable corresponding
Formaldehyde, then remaining absorbing liquid is cooled to about 3-5 DEG C, can obtain sodium sulfite crystallization and separate out, then filter, after separation of solid and liquid,
Solid can be used as Product recycling.Again to sulfur dioxide is passed through in residual absorption liquid, to the aobvious acidity of absorbing liquid so that sodium sulfite turns
Sodium hydrogensulfite is turned to, can be standby as medicament
It should be noted that above example is merely to illustrate the technical solution of the utility model, guarantor of the present utility model
Shield scope not limited to this.For a person skilled in the art, it is all within spirit of the present utility model and principle, to each reality
Apply the technical scheme described in example to modify, or any equivalent, modification, change are carried out to some technical characteristics therein
Change and improve etc., should be included within protection domain of the present utility model.
Claims (2)
1. a kind of processing unit of pernicious gas, it is characterised in that described device is circulated by water circulating pump, absorption tower, absorption tower
Tank, absorbing liquid oxygen-eliminating device and reactor composition, wherein described water circulating pump is entered by circulating pump discharge pipe with absorption tower
Liquid mouthful connection, absorption tower liquid outlet is connected by drain pipe with absorbing liquid oxygen-eliminating device, absorbing liquid oxygen-eliminating device pass through communicating pipe with it is anti-
Device is answered to connect, absorbing liquid oxygen-eliminating device top is provided with muffler and is connected with absorption tower tower body, and bottom is provided with aeration tube, described
Reactor is provided with medicament and adds mouth and leakage fluid dram, described reactor to be connected with absorption tower circulating water chennel by absorption tower communicating pipe
Logical, absorption tower circulating water chennel is connected by water circulating pump feed tube with water circulating pump.
2. processing unit according to claim 1, it is characterised in that described absorption tower is the spray of general gas-liquid mass transfer (contact) equipment
Drench one kind of tower, packed tower, bubble tower and plate column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620488123.9U CN206198954U (en) | 2016-05-20 | 2016-05-20 | A kind of processing unit of pernicious gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620488123.9U CN206198954U (en) | 2016-05-20 | 2016-05-20 | A kind of processing unit of pernicious gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206198954U true CN206198954U (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620488123.9U Expired - Fee Related CN206198954U (en) | 2016-05-20 | 2016-05-20 | A kind of processing unit of pernicious gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN206198954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854523A (en) * | 2016-05-20 | 2016-08-17 | 黄立维 | Harmful gas treating method and device |
| CN110487964A (en) * | 2019-08-13 | 2019-11-22 | 江苏健雄电气安装工程有限公司 | Pernicious gas detection device in a kind of high-voltage electrical cabinet |
-
2016
- 2016-05-20 CN CN201620488123.9U patent/CN206198954U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854523A (en) * | 2016-05-20 | 2016-08-17 | 黄立维 | Harmful gas treating method and device |
| CN110487964A (en) * | 2019-08-13 | 2019-11-22 | 江苏健雄电气安装工程有限公司 | Pernicious gas detection device in a kind of high-voltage electrical cabinet |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20200520 |