CN106731509A - A kind of cleaning solution of purifying industrial waste gases and preparation method thereof - Google Patents
A kind of cleaning solution of purifying industrial waste gases and preparation method thereof Download PDFInfo
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- CN106731509A CN106731509A CN201710098787.3A CN201710098787A CN106731509A CN 106731509 A CN106731509 A CN 106731509A CN 201710098787 A CN201710098787 A CN 201710098787A CN 106731509 A CN106731509 A CN 106731509A
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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
- B01D53/14—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 absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- 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
- B01D53/14—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 absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/50—Combinations of absorbents
- B01D2252/504—Mixtures of two or more absorbents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
Cleaning solution the present invention relates to purifying industrial waste gases and preparation method thereof, the cleaning solution is made up of the component of following weight portion：375 400 parts of water, 8 12 parts of metasilicate pentahydrate sodium, 30 40 parts of acetic acid, 100 120 parts of ethanol, 8 12 parts of mixed surfactant.The cleaning solution is applied to the treatment of meta-alkalescence and organic industry waste gas, by absorbing industrial waste gas, gaseous contamination material is transferred in liquid, prevents from causing atmosphere pollution, by the recycling to cleaning solution, reaches the purpose of pollution administration.
Description
Technical field
The invention belongs to environmental technology field, it is related to the treatment of industrial waste gas, more particularly to a kind of purifying industrial waste gases
Cleaning solution and preparation method thereof.
Background technology
The burning of the rise of various chemical industries, a large amount of coals and oil, and the industry such as electronics, printing, leather development,
Increasingly serious atmosphere polluting problem is also brought while promoting economic development.Industrial waste gas is due to coming in every shape, property
Different, easily migration, it is difficult to which treatment is particularly subject to the concern of people.
Before, industrially physisorphtion, such as active carbon adsorption, electrostatic are tended to mostly for the improvement of industrial waste gas
Absorption method, pressure swing adsorption method etc., pollution on the environment is reduced by first adsorbing to be recycled.But because activated carbon is inhaled
The molecular diameter of the attached impurity for needing to be adsorbed must be the aperture for being less than activated carbon, be only possible to ensure that impurity is absorbed into hole
In footpath, the requirement to changing raw material and activation is harsher；And pressure swing adsorption method is due to early investment high cost, desorption process
The low pressure of needs is difficult to realize and the high defect of adsorption process high pressure power consumption also have certain defect in application process.
Therefore, current processing scheme tends to absorption tower mostly absorb and adsorbent absorption, but, existing adsorbent
Cost is high, and equipment is complicated, and cumbersome, absorpting form is single, and limitation is big.In actual applications, there is treatment effeciency
Low, infiltration rate is slow, the problems such as treatment effect is undesirable.
The core technology that industrial waste gas is administered using cleaning solution absorption process is high-efficiency washing liquid.Therefore, in the prior art
There are various patents of invention on cleaning solution.For example：
CN105214446A provides absorbing liquid of a kind of benzene homologues industrial organic exhaust gas treatment and preparation method thereof, and it is former
Material component is by weight as follows：About 80-110 parts of water, 2-12 parts of sodium metasilicate, 1-5 parts of sodium acetate, 2-8 parts of propene carbonate, 2-8
Part ethanol, 1-10 parts of aliphatic acid polyethenoxy ether, 2-4 parts of dimethyl silicone polymer, 5-15 portions of modified starch, 2-4 parts of innovation wood
Quality sodium sulfonate.Specific preparation process is as follows：(1) it is made the ative starch that concentration of slurry is 20-28wt% with cornstarch and water
Slurry；(2) add the weight portion of sodium sulfite 10 to stir 15-25 minutes to the 100 weight portion ative starch slurry of step (1), add salt
Acid regulation slurry pH value 2.0~3.0, is heated to 45~50 DEG C, acidolysis reaction 3 hours；(3) to the reacted former shallow lake of step (2)
Slurry adds NaOH regulation pH value 9.0, adds sodium sulphate 5-15 weight portions, reacts 15-25 minutes, then hydrogenation oxidation
Sodium agent adjusts pH value 10.5~11.5；(4) 5 parts of expoxy propane of addition starched to the reacted ative starch of step (3), and adjust temperature
Spend to 48~55 DEG C, the temperature that ative starch is starched is reduced to 25~30 DEG C by reaction after 3 hours, is adjusted to 4 pH value with hydrochloric acid；
(5) ative starch plasm scouring, centrifugation, drying after step (4) is neutralized, make moisture control to obtain final product converted starch following.(6) take
Obtain modified starch 5-15 parts of step (5), adds it in 80-100 parts of water, then sequentially adds 2-12 parts of sodium metasilicate,
1-5 sodium acetates, 2-8 parts of propene carbonate was subsequently adding 2-8 parts of ethanol, 1-10 parts in 30 degrees Celsius of lower stirring and dissolvings 30 minutes
Aliphatic acid polyethenoxy ether improves temperature and is persistently stirred 1 hour to 40 DEG C.2-4 parts of dimethyl silicone polymer is added, 2-4 parts changes
Property sodium lignin sulfonate, stir 30 minutes, it is well mixed to obtain finished product.
CN103157362A provides a kind of preparation method for processing the micro emulsion absorbing liquid of organic exhaust gas, by quality hundred
Divide than preparing：Water 80%-90%, surfactant 0.5%-3%, couplant 7%-19.5%, auxiliary agent 0.02%-0.06%.
The preparation process of the micro emulsion absorbing liquid is as follows：Surfactant is sufficiently mixed with water first, obtains surfactant solution again
Auxiliary agent is dissolved in the water.Obtain compounding agent solution and then be mixed and stirred for first two solution to be uniformly eventually adding couplant and stir
Mix solution.Organic waste gas microemulsion absorbing liquid is obtained, related reagent selection is as follows：Surfactant is selected：Dodecanamide propyl two
Methylamine second lactones, octyl phenyl polyoxyethylene ether, neopelex；Couplant：1,2- propane diols, dimethylacetamide
Amine；Dimethyl silicone polymer, hydroxy silicon oil.
The absorbing liquid purification absorption region mentioned in above-mentioned patent document is confined to 3 benzene waste gas, and micro emulsion absorbing liquid is applied to
Volatile benzenes, two kinds of products for being used to absorb waste gas have limitation.Some absorbing liquids as shown in CN105214446A, institute
It is difficult to obtain with reagent and preparation process is complicated, is unfavorable for promoting the use of.
In view of the drawbacks described above of prior art, in the urgent need to develop a kind of new purifying industrial waste gases cleaning solution and its
Preparation method.
The content of the invention
It is an object of the invention to overcome shortcoming present in prior art, there is provided a kind of cleaning solution of purifying industrial waste gases
And preparation method thereof, the cleaning solution is applied to the treatment of meta-alkalescence and organic industry waste gas, by absorbing industrial waste gas, by gas
Polluter is transferred in liquid, prevents from causing atmosphere pollution, by the recycling to cleaning solution, reaches the mesh of pollution administration
's.
To achieve these goals, the present invention provides following technical scheme：
A kind of cleaning solution of purifying industrial waste gases, it is characterised in that be made up of the component of following weight portion：Water 375-400
Part, metasilicate pentahydrate sodium 8-12 parts, acetic acid 30-40 parts, ethanol 100-120 parts, mixed surfactant 8-12 parts.
Further, wherein, the mixed surfactant be anionic-nonionic surface active agent.
Further, wherein, the mixed surfactant be neopelex, lignosulfonates,
Two or more in fatty glyceride, AEO and APG are mixed with arbitrary proportion.
Additionally, the present invention also provides a kind of preparation method of the cleaning solution of above-mentioned purifying industrial waste gases, it is characterised in that bag
Include following steps：
(1), the acetic acid of the weight portion, ethanol are well mixed with water, the first mixed solution is formed；
(2) metasilicate pentahydrate sodium of the weight portion, is added into first mixed solution, it is well mixed after obtain the
Two mixed solutions；
(3), the mixed surfactant of the weight portion is added in second mixed solution, after stirring
The cleaning solution is obtained.
Further, wherein, the preparation method is carried out at 20-30 DEG C.
Further, wherein, the preparation method is carried out at 25 DEG C.
Compared with cleaning solution with existing purifying industrial waste gases and preparation method thereof, purifying industrial waste gases of the invention are washed
Liquid and preparation method thereof is washed with following Advantageous Effects：
1st, cleaning solution of the invention adds metasilicate pentahydrate sodium, and excellent buffering basicity can be provided in cleaning solution, has
Have and suspend and the performance such as emulsification dirt and certain softened water effect, the reaction of stabilization can be provided and environment is absorbed, it is ensured that held
It is continuous stably to absorb, while providing corrosion-resisting function etc. to light metal (aluminium, zinc).
2nd, acetic acid is added in cleaning solution of the invention, is environmentally friendly reagent, it is to avoid secondary pollution and assimilation effect
Well.
3rd, ethanol is added in cleaning solution of the invention, as organic solvent, improves cleaning solution to organic matter in industrial waste gas
The absorption efficiency of matter.
4th, cleaning solution of the invention selects anionic-nonionic surface active agent, is neopelex, wood
It is two or more with any in mahogany sulfonate, fatty glyceride, AEO (AEO), APG (APG)
Ratio is mixed.There is synergy to a certain extent and have solubilising, mobilization to hydrophobicity organic exhaust gas waste liquid, can change
Enter the dissolubility and secondary utilizability of organic pollution.
5th, neopelex, easily biological-degradable, its degraded are added in the surfactant of cleaning solution of the invention
Property can be more than 90%, environmental pollution degree is small.
6th, the method that cleaning solution of the invention is absorbed using mixed surfactant and absorbent collective effect, a side
Face, the most of of selection are environmentally friendly reagent such as acetic acid, neopelex, both ensure that efficient assimilation effect
Environment is protected again, and on the other hand, the reagent raw material of selection easily takes, cheap, economical and practical.
7th, cleaning solution of the invention be used to absorb waste gas scope it is wide, limitation is small, both can absorb alkalescence waste gas such as ammonia,
Hydrazine, hydrogen phosphide etc., can absorb organic exhaust gas waste liquid such as alcohols, phenols, esters and benzene again, can be widely applied to most of differences
Scale, the industry for producing different dusty gas, have broad application prospects.
Specific embodiment
With reference to embodiment, the present invention is further described, and the content of embodiment is not as to protection scope of the present invention
Limitation.
The cleaning solution of purifying industrial waste gases of the invention is made up of the component of following weight portion：Water 375-400 parts, five water it is inclined
Sodium metasilicate 8-12 parts, acetic acid 30-40 parts, ethanol 100-120 parts, mixed surfactant 8-12 parts.
Wherein, acetic acid is used to provide sour environment, is conducive to the absorption of alkaline gas.
Metasilicate pentahydrate sodium is to be with silica flour that silica quality fraction is more than 90% and sodium oxide molybdena mass fraction
38%~80% alkali lye is reaction raw materials, and by reagent obtained in crystallisation by cooling after the completion of reaction, it is white crystalline powder
End, soluble in water and dilute alkaline soln, with de-sludging, emulsification, dispersion, moistening, permeability and pH buffer capacities.In the present invention,
Its buffering basicity for being used to adjust cleaning solution, acts on absorption tower no corrosion.
Ethanol is used as organic solvent, effectively absorption of the increase absorbing liquid to organic principle in waste gas.
Mixed surfactant has the characteristics of at much lower concentrations reducing water surface tension force, have synergy and
There are solubilising, mobilization to hydrophobicity organic exhaust gas waste liquid, significantly increase the dissolubility of organic pollution and organic matter is provided
Secondary utilizability.
In the present invention, it is preferred to, the mixed surfactant is anionic-nonionic surface active agent.
It is highly preferred that the mixed surfactant is neopelex (a kind of artificial synthesized detergent, the moon
Ionic surfactant, there is the performances such as decontamination, wetting, foaming, emulsification, dispersion), lignosulfonates (anionic surface
Activating agent), fatty glyceride (nonionic surface active agent), AEO (AEO) (non-ionic surface live
Property agent), two or more in APG (APG) (nonionic surface active agent) mix with arbitrary proportion.
The principle of absorption of cleaning solution of the invention is：The essence of its absorption process is to be transferred to gaseous contaminant in waste gas
Liquid phase (cleaning solution), liquid phase is present in the hydrate or certain noval chemical compound that dissolve.To avoid secondary pollution, in absorbent
In selection, after the present invention considers that gaseous contaminant absorbed, generate recyclable accessory substance or be translated into the solid of indissoluble
(slag) is separated, and the addition of mixed surfactant just promotes the generation of chemical reaction conversion to a certain extent.
When mixed gas are processed, such as alkaline gas mix with phenol, ketone, the first absorption of organic exhaust gas can make the increase of washing liquid acidity
And then the absorption of alkaline waste gas is more beneficial for, and a kind of synergy is finally reached, the absorption efficiency of cleaning solution is improved, expand and absorb
Scope.In absorption process, absorbent plays absorption and waste gas and waste liquid is carried out with certain chemical reaction converting and net
Change, mixed surfactant is provided and maintains for example suitable pH value of absorption environment of stabilization and the viscosity and stabilization of cleaning solution
Property etc., to ensure continual and steady assimilation effect while being also beneficial to the separation of various components in cleaning solution after absorption.
The present invention also provides a kind of preparation method of the cleaning solution of above-mentioned purifying industrial waste gases, comprises the following steps：
First, the acetic acid of the weight portion, ethanol are well mixed with water, form the first mixed solution.
Secondly, by metasilicate pentahydrate sodium addition first mixed solution of the weight portion, obtained after being well mixed
Second mixed solution；
Finally, the mixed surfactant of the weight portion is added in second mixed solution, is stirred
The cleaning solution is obtained afterwards.
In the present invention, it is preferred to, the preparation method is carried out at 20-30 DEG C.
It is highly preferred that the preparation method is carried out at 25 DEG C.
【Embodiment 1】
At 25 DEG C, first 100g ethanol, 40g acetic acid and 400g water are mixed, obtain the first mixed solution.Then again will
10g metasilicate pentahydrate sodiums are added in first mixed solution, and the second mixed solution is obtained after being well mixed.Finally, by 2g ten
Dialkyl benzene sulfonic acids sodium, 2g lignosulfonates, 2g fatty glycerides, 2g AEOs, 2g APGs add
Enter in second mixed solution, stir.
【Embodiment 2】
At 25 DEG C, first 100g ethanol, 40g acetic acid and 400g water are mixed, obtain the first mixed solution.Then again will
10g metasilicate pentahydrate sodiums are added in first mixed solution, and the second mixed solution is obtained after being well mixed.Finally, by 2g ten
Dialkyl benzene sulfonic acids sodium, 3g lignosulfonates, 1g fatty glycerides, 3g AEOs, 1g APGs add
Enter in second mixed solution, stir.
【Embodiment 3】
At 25 DEG C, first 110g ethanol, 30g acetic acid and 400g water are mixed, obtain the first mixed solution.Then again will
10g metasilicate pentahydrate sodiums are added in first mixed solution, and the second mixed solution is obtained after being well mixed.Finally, by 2g ten
Dialkyl benzene sulfonic acids sodium, 2g lignosulfonates, 2g fatty glycerides, 2g AEOs, 2g APGs add
Enter in second mixed solution, stir.
The cleaning solution absorption process that the present invention is used combines Physical Absorption and chemisorbed, and preparing raw material source is wide, preparation
Method is simple, consume energy low, adsorption effect substantially and allow the product after adsorbing to be easy to a certain extent using the similar principle that mixes
Separate and recycle.The present invention also compensate for partially absorbing liquid on the other hand and can only absorb the defect of Single Pollution gas, to alkali
Property gas (ammonia, hydrogen phosphide, hydrazine) and benzene and benzene homologues, alcohols, phenols, esters amine etc. there is preferable absorption cleaning to make
With, absorption region is expanded, can be applied to the waste gas pollution control and treatment of various chemical industries.Raw material selection aspect, the moon that the present invention is selected
Ion-nonionic phenotype surfactant is not dissociated in water, very stable, the portion in acid, alkalescence and metal salt solution
Divide activating agent such as APG (APG) with renewable resource as raw material, and with good biological degradability, be environmentally friendly
Reagent, it is to avoid secondary pollution to environment.
The advantage of the cleaning solution absorption process that the present invention is used is simple technological process, and absorbent is cheap, operating cost
It is low, it is adaptable in the case that waste gas waste stream amount is larger, concentration is higher, temperature is relatively low and pressure is higher at the waste gas of vapor phase contaminants
Manage and absorb waste gas and waste liquid scope wide, equally applicable is administered to semiworks zonule type, limitation is small, there is absorption effect well
Really.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present invention
Implementation method restriction.For those of ordinary skill in the field, can also make on the basis of the above description
The change or variation of other multi-forms.Here all of implementation method cannot be exhaustive.It is every to belong to skill of the invention
Obvious change that art scheme is extended out changes row still in protection scope of the present invention.
Claims (6)
1. a kind of cleaning solution of purifying industrial waste gases, it is characterised in that be made up of the component of following weight portion：Water 375-400 parts,
Metasilicate pentahydrate sodium 8-12 parts, acetic acid 30-40 parts, ethanol 100-120 parts, mixed surfactant 8-12 parts.
2. the cleaning solution of purifying industrial waste gases according to claim 1, it is characterised in that the mixed surfactant
It is anionic-nonionic surface active agent.
3. the cleaning solution of purifying industrial waste gases according to claim 2, it is characterised in that the mixed surfactant
It is two in neopelex, lignosulfonates, fatty glyceride, AEO and APG
Mixed with arbitrary proportion more than kind.
4. the preparation method of the cleaning solution of the purifying industrial waste gases any one of a kind of claim 1-3, it is characterised in that
Comprise the following steps：
(1), the acetic acid of the weight portion, ethanol are well mixed with water, the first mixed solution is formed；
(2), by metasilicate pentahydrate sodium addition first mixed solution of the weight portion, second is obtained after being well mixed and is mixed
Close solution；
(3), the mixed surfactant of the weight portion is added in second mixed solution, is obtained after stirring
The cleaning solution.
5. preparation method according to claim 4, it is characterised in that the preparation method is carried out at 20-30 DEG C.
6. preparation method according to claim 5, it is characterised in that the preparation method is carried out at 25 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710098787.3A CN106731509A (en) | 2017-02-23 | 2017-02-23 | A kind of cleaning solution of purifying industrial waste gases and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110891670A (en) * | 2017-03-13 | 2020-03-17 | 图里诺研究合作有限公司 | Specific liquid solutions suitable for cooling and capturing pollutants in diesel engine exhaust |
| CN112755764A (en) * | 2020-12-16 | 2021-05-07 | 中南大学 | Stable suspension system for removing mercury in flue gas and recovery method thereof |
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