CN105289206A - Absorption liquid for benzene series waste gas and preparation method of absorption liquid - Google Patents
Absorption liquid for benzene series waste gas and preparation method of absorption liquid Download PDFInfo
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- CN105289206A CN105289206A CN201510643961.9A CN201510643961A CN105289206A CN 105289206 A CN105289206 A CN 105289206A CN 201510643961 A CN201510643961 A CN 201510643961A CN 105289206 A CN105289206 A CN 105289206A
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Abstract
The invention relates to absorption liquid for benzene series waste gas and a preparation method of the absorption liquid. The absorption liquid is prepared from the following raw materials: about 80 to 110 parts of deionized water, 2 to 12 parts of sodium carbonate, 1 to 5 parts of sodium acetate, 2 to 8 parts of propylene carbonate, 2 to 8 parts of ethyl alcohol, 1 to 10 parts of fatty acid polyoxyethylene ether, 2 to 4 parts of polydimethylsiloxane, 5 to 15 parts of modified starches, 2 to 4 parts of polyethylene glycol, 12 to 18 parts of sea-foam stone powder, 6 to 10 parts of cross-linked rectorite and 8 to 15 parts of chitosan. The raw materials of the absorption liquid have the characteristics of easiness in degrading, low price and the like, and have a synergistic effect under the use of a special ratio, so that the absorption rate of organic waste gas is greatly increased, and the benzene series waste gas is effectively removed.
Description
Technical field
The present invention relates to a kind of waste gas absorption liquid, particularly a kind of absorbing liquid of benzene series waste gas.
The invention still further relates to the preparation method of above-mentioned absorbing liquid.
Background technology
Toluene, dimethylbenzene, benzene, be industrially commonly called as " triphen ", is widely used in fuel, agricultural chemicals, production of flavor, makes paint, pharmacy, the industries such as Furniture manufacture as industrial chemicals or solvent.In recent years along with the development of electronics industry, machinery, automobile making, printing, shoemaking, coatings industry, application toluene, benzene etc. get more and more as the occasion of solvent, thus cause and volatilize a large amount of gas benzene in air.Therefore waste gas containing benzene is also day by day serious for the pollution of air.They are poisonous organic compound, and leukaemia is the modal malignant tumour relevant with benzene poisoning, and toluene poisoning main manifestations is the impression to nervous centralis, and dimethylbenzene toxicity major effect renal function, embryo or reproductive system.
Processing method for " triphen " generally have combustion method, active carbon adsorption,
Combustion method not easily processes large quantity of exhaust gas, and complicated operation has certain danger.After active carbon adsorption adsorbs certain waste gas, adsorption capacity can decline, and needs the activated carbon that more renews or to its regeneration process, be therefore only applicable to the waste gas that low concentration, tolerance are little, and continuation is not high, easy secondary pollution.
At Chinese patent 200710032770.4, a kind of method of waste gas containing benzene liquid-spraying purified liquid process waste gas is proposed in 201410447382.2 and 201110150485.9, although said method is simple to operate, cost is low, effect stability, but its purifying rate need further raising, and when it using halogen-containing material, if improper use, easily cause the pollution to environment.
Summary of the invention
The present invention completes to solve above-mentioned deficiency of the prior art, the object of this invention is to provide a kind of absorbing liquid processing benzene series waste gas, the cooperative effect of several material of this absorbing liquid, effectively improve the assimilation effect of " triphen " waste gas, and its configuration simple, with low cost, effectively overcome deficiency of the prior art.
Technical scheme of the present invention is as described below:
Process an absorbing liquid for benzene series waste gas, be made up of following raw material by weight:
About 80-110 part deionized water, 2-12 part sodium carbonate, 1-5 sodium acetate, 2-8 part propene carbonate, 2-8 part ethanol, 1-10 part aliphatic acid polyethenoxy ether, 2-4 part dimethyl silicone polymer, 5-15 part modified starch, 2-4 part polyethylene glycol, 12-18 part sepiolite powder, 6-10 part cross-linked rectorite, 8-15 part shitosan.
Further scheme, absorbing liquid is made up of following raw material by weight: 80 parts of deionized waters, 2 parts of sodium carbonate, 1 part of sodium acetate, 2 parts of propene carbonates, 2 parts of ethanol, 1 part of aliphatic acid polyethenoxy ether, 2 parts of dimethyl silicone polymers, 5 portions of modified starches, 2 parts of polyethylene glycol, 12 parts of sepiolite powders, 6 parts of cross-linked rectorites, 8 parts of shitosans.
Further scheme, absorbing liquid is made up of following raw material by weight: 100 parts of deionized waters, 8 parts of sodium carbonate, 3 parts of sodium acetates, 5 parts of propene carbonates, 5 parts of ethanol, 6 parts of aliphatic acid polyethenoxy ethers, 3 parts of dimethyl silicone polymers, 10 portions of modified starches, 3 parts of polyethylene glycol, 15 parts of sepiolite powders, 8 parts of cross-linked rectorites, 12 parts of shitosans.
Further scheme, absorbing liquid is made up of following raw material by weight: 110 parts of deionized waters, 12 parts of sodium carbonate, 5 parts of sodium acetates, 8 parts of propene carbonates, 8 parts of ethanol, 10 parts of aliphatic acid polyethenoxy ethers, 4 parts of dimethyl silicone polymers, 15 portions of modified starches, 4 parts of polyethylene glycol, 18 parts of sepiolite powders, 10 parts of cross-linked rectorites, 15 parts of shitosans.
Further, the preparation method of described modified starch is:
1) making concentration of slurry with cornstarch and water is that the ative starch of about 20-28wt% is starched;
2) to step 1) 100 weight portion ative starch slurry add sodium sulfite 10 weight portion stir 15-25 minute, then add hydrochloric acid regulate slurry pH value 2.0 ~ 3.0, be heated to about 45 ~ 50 DEG C, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 5-15 weight portion, reaction 15-25 minute, then hydro-oxidation sodium agent adjust ph 10.5 ~ 11.5;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 48 ~ 55 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 25 ~ 30 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%.
Present invention also offers the preparation method of above-mentioned absorbing liquid:
1) making concentration of slurry with cornstarch and water is that the ative starch of 20-28wt% is starched;
2) to step 1) 100 weight portion ative starch slurry add sodium sulfite 10 weight portion stir 15-25 minute, then add hydrochloric acid regulate slurry pH value 2.0 ~ 3.0, be heated to 45 ~ 50 DEG C, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 5-15 weight portion, reaction 15-25 minute, then hydro-oxidation sodium agent adjust ph 10.5 ~ 11.5;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 48 ~ 55 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 25 ~ 30 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%;
6) get the modified starch that step 5) obtains, joined in deionized water, then add sodium carbonate successively, sodium acetate, propene carbonate, sepiolite powder, cross-linked rectorite, shitosan, 30 degrees Celsius of lower stirring and dissolving 30 minutes, then adds ethanol, and aliphatic acid polyethenoxy ether improves temperature to 40 degrees Celsius of Keep agitation 1 hour, add dimethyl silicone polymer again, polyethylene glycol, stirs 30 minutes, mixes and obtain finished product.
Detailed description of the invention
Below in conjunction with embodiment and comparative example, the present invention is described in detail, and following embodiment is only used for the detailed explanation to description, not as restriction of the present invention.
Embodiment 1
1) making concentration of slurry with cornstarch and water is that the ative starch of 20wt% is starched;
2) to step 1) 100 weight portion ative starch slurries add sodium sulfite 10 weight portion and stir 15 minutes, then add hydrochloric acid and regulate slurry pH value 2.0, be heated to 45, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 5 weight portion, react 15 minutes, then hydro-oxidation sodium agent adjust ph 10.5;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 48 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 25 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%.
6) get the modified starch 5 parts that step 5) obtains, joined in 80 parts of deionized waters, then add 2 parts of sodium carbonate successively, 1 sodium acetate, 2 parts of propene carbonates, 12 parts of sepiolite powders, 6 parts of cross-linked rectorites, 8 parts of shitosans, 30 degrees Celsius of lower stirring and dissolving 30 minutes, then add 2 parts of ethanol, and 1 part of aliphatic acid polyethenoxy ether improves temperature to 40 degrees Celsius of Keep agitation 1 hour, add 2 parts of dimethyl silicone polymers again, 2 parts of polyethylene glycol, stir 30 minutes, mix and obtain finished product.
Embodiment 2
1) making concentration of slurry with cornstarch and water is that the ative starch of 25wt% is starched;
2) to step 1) 100 weight portion ative starch slurries add sodium sulfite 10 weight portion and stir 20 minutes, then add hydrochloric acid and regulate slurry pH value 2.5, be heated to 48 DEG C, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 10 weight portion, react 20 minutes, then hydro-oxidation sodium agent adjust ph 11;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 50 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 28 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%.
6) modified starch 10 parts that step 5) obtains is got, joined in 100 parts of deionized waters, then 8 parts of sodium carbonate are added successively, 3 sodium acetates, 5 parts of propene carbonates, 15 parts of sepiolite powders, 8 parts of cross-linked rectorites, 12 parts of shitosans, 30 degrees Celsius of lower stirring and dissolving 30 minutes, then add 5 parts of ethanol, and 6 parts of aliphatic acid polyethenoxy ethers improve temperature to 40 degrees Celsius of Keep agitation 1 hour, add 3 parts of dimethyl silicone polymers again, 3 parts of polyethylene glycol, stir 30 minutes, mix and obtain finished product.
Embodiment 3
1) making concentration of slurry with cornstarch and water is that the ative starch of 28wt% is starched;
2) to step 1) 100 weight portion ative starch slurries add sodium sulfite 10 weight portion and stir 25 minutes, then add hydrochloric acid and regulate slurry pH value 3.0, be heated to 50 DEG C, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 15 weight portion, react 25 minutes, then hydro-oxidation sodium agent adjust ph 11.5;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 55 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 30 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%.
6) modified starch 15 parts that step 5) obtains is got, joined in 110 parts of deionized waters, then 12 parts of sodium carbonate are added successively, 5 sodium acetates, 8 parts of propene carbonates, 18 parts of sepiolite powders, 10 parts of cross-linked rectorites, 15 parts of shitosans, 30 degrees Celsius of lower stirring and dissolving 30 minutes, then add 8 parts of ethanol, and 10 parts of aliphatic acid polyethenoxy ethers improve temperature to 40 degrees Celsius of Keep agitation 1 hour, add 4 parts of dimethyl silicone polymers again, 4 parts of polyethylene glycol, stir 30 minutes, mix and obtain finished product.
Comparative example 1
Starch 5 parts, joined in 80 parts of water, then add 2 parts of sodium carbonate successively, 1 sodium acetate, 2 parts of propene carbonates were 30 degrees Celsius of lower stirring and dissolving 30 minutes, then 2 parts of ethanol are added, 1 part of aliphatic acid polyethenoxy ether improves temperature to 40 degrees Celsius of Keep agitation 1 hour, then adds 2 parts of dimethyl silicone polymers, 2 parts of polyethylene glycol, stir 30 minutes, mix and obtain finished product.
Comparative example 2
1) making concentration of slurry with cornstarch and water is that the ative starch of 20wt% is starched;
2) to step 1) 100 weight portion ative starch slurries add sodium sulfite 10 weight portion and stir 15 minutes, then add hydrochloric acid and regulate slurry pH value 2.0, be heated to 45 DEG C, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 5 weight portion, react 15 minutes, then hydro-oxidation sodium agent adjust ph 10.5;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 48 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 25 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%.
6) modified starch 5 parts that step 5) obtains is got, joined in 80 parts of water, then 2 parts of sodium carbonate are added successively, 1 sodium acetate, 2 parts of propene carbonates, 2 parts of ethanol, 1 part of aliphatic acid polyethenoxy ether, 2 parts of dimethyl silicone polymers, 2 parts of polyethylene glycol, 10 parts of sepiolite powders, 3 parts of cross-linked rectorites stir 30 minutes, mix and obtain finished product.
Test case 1
Get the absorbing liquid of above-described embodiment 1-3, comparative example 1-2 respectively, mixing organic exhaust gas benzene,toluene,xylene concentration being 100ppm passes in absorbing liquid with the speed of 8L/min, and control liquid-gas ratio is 15L/m
2, obtain the extraction efficiency of benzene,toluene,xylene waste gas, concrete numerical value is listed in table 1 below.
Table 1
| Benzene clearance | Toluene removal rate | Dimethylbenzene clearance | |
| Embodiment 1 | 84.2％ | 83.6％ | 87.5％ |
| Embodiment 2 | 85.5％ | 84.9% | 88.3% |
| Embodiment 3 | 83.7% | 82.1% | 86.8% |
| Comparative example 1 | 75.1% | 74.4% | 77.2% |
| Comparative example 2 | 80.9% | 80.6% | 81.2% |
Can be found out by above-mentioned numerical value, the benzene,toluene,xylene clearance of embodiment 1-3 is greatly improved than the clearance in Chinese patent 201410447382.2, by improving its component, effectively improve the absorption clearance containing benzene organic exhaust gas.Modified starch is not used in comparative example 1, and employ common starch, its clearance decreases than embodiment 1-3, therefore can find out that starch conversion has a significant impact raising organic benzene, organic clearance, and only by each mixing of materials in comparative example 2, its organic benzene, organic clearance also decreases, and therefore can find out that the preparation method of absorbing liquid, incorporation time, temperature also have certain influence for the clearance of final benzene.
beneficial effect
Can be found out by the data of above-described embodiment and comparative example, significantly improved by the absorptivity of absorbing liquid to waste gas containing benzene of particular components of the present invention, effectively eliminate the toxic gas at waste gas end, and absorbing liquid safety of the present invention, economy are not easy to cause secondary pollution.
Above-mentionedly only several specific embodiments in the present invention to be illustrated; but can not as protection scope of the present invention; every according to the change of the equivalence done by design spirit in the present invention or to modify or equal proportion zooms in or out, all should think and fall into protection scope of the present invention.
Claims (6)
1. an absorbing liquid for benzene series waste gas, is characterized in that being made up of following raw material by weight:
About 80-110 part deionized water, 2-12 part sodium carbonate, 1-5 part sodium acetate, 2-8 part propene carbonate, 2-8 part ethanol, 1-10 part aliphatic acid polyethenoxy ether, 2-4 part dimethyl silicone polymer, 5-15 part modified starch, 2-4 part polyethylene glycol, 12-18 part sepiolite powder, 6-10 part cross-linked rectorite, 8-15 part shitosan.
2. absorbing liquid according to claim 1, is characterized in that being made up of following raw material by weight: 80 parts of deionized waters, 2 parts of sodium carbonate, 1 part of sodium acetate, 2 parts of propene carbonates, 2 parts of ethanol, 1 part of aliphatic acid polyethenoxy ether, 2 parts of dimethyl silicone polymers, 5 portions of modified starches, 2 parts of polyethylene glycol, 12 parts of sepiolite powders, 6 parts of cross-linked rectorites, 8 parts of shitosans.
3. absorbing liquid according to claim 1, is characterized in that being made up of following raw material by weight: 100 parts of deionized waters, 8 parts of sodium carbonate, 3 parts of sodium acetates, 5 parts of propene carbonates, 5 parts of ethanol, 6 parts of aliphatic acid polyethenoxy ethers, 3 parts of dimethyl silicone polymers, 10 portions of modified starches, 3 parts of polyethylene glycol, 15 parts of sepiolite powders, 8 parts of cross-linked rectorites, 12 parts of shitosans.
4. absorbing liquid according to claim 1, is characterized in that being made up of following raw material by weight: 110 parts of deionized waters, 12 parts of sodium carbonate, 5 parts of sodium acetates, 8 parts of propene carbonates, 8 parts of ethanol, 10 parts of aliphatic acid polyethenoxy ethers, 4 parts of dimethyl silicone polymers, 15 portions of modified starches, 4 parts of polyethylene glycol, 18 parts of sepiolite powders, 10 parts of cross-linked rectorites, 15 parts of shitosans.
5. the absorbing liquid according to the arbitrary claim of claim 1-4, is characterized in that the preparation method of described modified starch is: 1) making concentration of slurry with cornstarch and water is that the ative starch of about 20-28wt% is starched;
2) to step 1) 100 weight portion ative starch slurry add sodium sulfite 10 weight portion stir 15-25 minute, then add hydrochloric acid regulate slurry pH value 2.0 ~ 3.0, be heated to about 45 ~ 50 DEG C, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 5-15 weight portion, reaction 15-25 minute, then hydro-oxidation sodium agent adjust ph 10.5 ~ 11.5;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 48 ~ 55 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 25 ~ 30 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%.
6. the preparation method of the absorbing liquid for benzene series waste gas according to the arbitrary claim of claim 1-5, is characterized in that:
1) making concentration of slurry with cornstarch and water is that the ative starch of 20-28wt% is starched;
2) to step 1) 100 weight portion ative starch slurry add sodium sulfite 10 weight portion stir 15-25 minute, then add hydrochloric acid regulate slurry pH value 2.0 ~ 3.0, be heated to 45 ~ 50 DEG C, acidolysis reaction 3 hours;
3) to step 2) reacted ative starch slurry add NaOH adjust ph 9.0, then add sodium sulphate 5-15 weight portion, reaction 15-25 minute, then hydro-oxidation sodium agent adjust ph 10.5 ~ 11.5;
4) to step 3) reacted ative starch slurry add 5 parts of expoxy propane, and regulate temperature to 48 ~ 55 DEG C, react after 3 hours and the temperature of ative starch slurry is reduced to 25 ~ 30 DEG C, with hydrochloric acid, pH value is adjusted to 4;
5) by step 4) neutralization after ative starch plasm scouring, centrifugal, dry, make moisture control namely to obtain converted starch below 13%;
6) get the modified starch that step 5) obtains, joined in deionized water, then add sodium carbonate successively, sodium acetate, propene carbonate, sepiolite powder, cross-linked rectorite, shitosan, 30 degrees Celsius of lower stirring and dissolving 30 minutes, then adds ethanol, and aliphatic acid polyethenoxy ether improves temperature to 40 degrees Celsius of Keep agitation 1 hour, add dimethyl silicone polymer again, polyethylene glycol, stirs 30 minutes, mixes and obtain finished product.
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Citations (5)
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| CN86106882A (en) * | 1986-10-04 | 1987-07-22 | 辽宁省劳动保护科学研究所 | Purify the liquid-gas absorption process of containing benezene waste gas |
| WO2012091298A1 (en) * | 2010-12-29 | 2012-07-05 | Samyang Genex Corporation | Method for preparing hydroxyalkyl starch |
| CN103157362A (en) * | 2011-12-09 | 2013-06-19 | 中国科学院广州地球化学研究所 | Preparation method of micro-emulsion absorption liquid used for processing organic exhaust gas |
| CN103752157A (en) * | 2014-01-26 | 2014-04-30 | 河北工程大学 | Catching agent of benzene series compounds and preparation method thereof |
| CN104275074A (en) * | 2014-05-13 | 2015-01-14 | 浙江大学 | Absorption liquid for treating benzene series organic waste gas and preparation method of absorption liquid for treating benzene series organic waste gas |
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2015
- 2015-10-08 CN CN201510643961.9A patent/CN105289206A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106882A (en) * | 1986-10-04 | 1987-07-22 | 辽宁省劳动保护科学研究所 | Purify the liquid-gas absorption process of containing benezene waste gas |
| WO2012091298A1 (en) * | 2010-12-29 | 2012-07-05 | Samyang Genex Corporation | Method for preparing hydroxyalkyl starch |
| CN103157362A (en) * | 2011-12-09 | 2013-06-19 | 中国科学院广州地球化学研究所 | Preparation method of micro-emulsion absorption liquid used for processing organic exhaust gas |
| CN103752157A (en) * | 2014-01-26 | 2014-04-30 | 河北工程大学 | Catching agent of benzene series compounds and preparation method thereof |
| CN104275074A (en) * | 2014-05-13 | 2015-01-14 | 浙江大学 | Absorption liquid for treating benzene series organic waste gas and preparation method of absorption liquid for treating benzene series organic waste gas |
Non-Patent Citations (3)
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| 宁正祥: "《食物生物化学》", 28 February 2013 * |
| 王志良等: "《精细化工行业废气污染物控制技术及示范》", 31 May 2014 * |
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