CN100386303C - Method for eliminating sulfur dioxide in citrate solution enhanced by ultrasonic - Google Patents
Method for eliminating sulfur dioxide in citrate solution enhanced by ultrasonic Download PDFInfo
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- CN100386303C CN100386303C CNB2004100734976A CN200410073497A CN100386303C CN 100386303 C CN100386303 C CN 100386303C CN B2004100734976 A CNB2004100734976 A CN B2004100734976A CN 200410073497 A CN200410073497 A CN 200410073497A CN 100386303 C CN100386303 C CN 100386303C
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Abstract
The present invention discloses a method for eliminating sulfur dioxide in citrate solution by ultrasonic strengthening. The citrate solution absorbs sulfur dioxide, sulfurous acid in the mixing solution is changed into water and sulfur dioxide under the action of complex frequency orthogonal ultrasonic, the sulfur dioxide escapes from the solution in the form of gas, and high-concentration sulfur dioxide is obtained after enriching. The citrate solution after reacting can be used for absorbing sulfur dioxide. The method of the present invention eliminates and enriches sulfur dioxide so as to reach the purpose of eliminating the sulfur dioxide enriched in waste gas in a high efficiency mode, and harmful impurities are not introduced in the process of elimination.
Description
Technical field
The present invention relates to a kind of method that removes sulfurous gas in the citrate solution, particularly a kind of method that removes sulfurous gas in the citrate solution solution with intensified by ultrasonic wave.
Background technology
Sulfurous gas is a kind of especially effectively waste gas of improvement that is difficult to of a kind of obnoxious flavour, particularly low-concentration sulfur dioxide.In order to administer the waste gas of this contaminate environment, the method that adopts is alkaline absorption process and ionic fluid method usually, but these two kinds of methods all exist treatment cost height, subsequent products shortcoming such as can't effectively handle.Adopt citrate solution can effectively absorb the gas that contains sulfurous gas, and can adopt the sulfurous gas of certain methods separate dissolved in solution, and be that product is sold finally with high density sulfurous gas.
The method of sulfurous gas is present removing of adopting in the citrate solution: in packing tower, adopt steam that solution is heated to about 95 ℃, sulfurous gas is heated to evaporate from solution, adopt water separator to carry out separating of sulfurous gas and water, can obtain higher dense sulfur dioxide gas after the cooling.But the steam loss of this technology is too high, and Citrate trianion rate of decomposition height has the sulfate ion of higher concentration to generate, and the circulation that influences citrate solution absorbs.
The patent applicant has applied for that a kind of low-frequency ultrasonic waves that adopts takes off the method for inhaling sulfurous gas in the solution, but its energy consumption is undesirable, and the reaction times is longer, and the treatment soln amount of reaction unit is little.
Summary of the invention
Main purpose of the present invention overcomes the deficiencies in the prior art exactly, sulfur dioxide removal in a kind of citrate solution that will contain sulfurous gas is provided, more energy-conservation in sepn process, reduce the reaction times, prevent that Citrate trianion from decomposing, reducing the method for sulfate radical growing amount.
The technical scheme that the present invention deals with problems is:
1, under the effect of multiple quadrature ultrasonic wave frequently, makes the sulfurous acid in the citrate solution that contains sulfurous gas be decomposed into sulfurous gas and water, and from solution, overflow with the form of sulfurous gas; Reaction conditions is: at solution temperature is under 40 ℃ of conditions, is 20KHz in frequency, and power is 40W/L, and frequency is 1MHz, and power is under the ultrasonic wave effect of 15W/L, reacts 1 hour.
2, under the effect of multiple quadrature ultrasonic wave frequently, make the sulfurous acid in the citrate solution that contains sulfurous gas be decomposed into sulfurous gas and water, and from solution, overflow with the form of sulfurous gas; Reaction conditions is: under 40 ℃ of conditions of solution temperature, at frequency 40KHz, power is 40W/L, and frequency 1MHz, power are under the ultrasonic wave effect of 10W/L, reacts 1 hour.
3, under the effect of multiple quadrature ultrasonic wave frequently, make the sulfurous acid in the citrate solution that contains sulfurous gas be decomposed into sulfurous gas and water, and from solution, overflow with the form of sulfurous gas; Reaction conditions is: under 45 ℃ of conditions of solution temperature, at frequency 60KHz, power is 40W/L, and frequency 1MHz, power are under the ultrasonic wave effect of 20W/L, reacts 1 hour.
More than contain the citrate solution of sulfurous gas in three kinds of schemes the preparation method be: in the filler reaction tower, under 30 ℃ of conditions of temperature, sulfur dioxide concentration is that 1.5% the waste gas and the 1.5mol/L citrate solution of pH value 4.5 react, and obtains containing the citrate solution of sulfurous gas; Sulfur dioxide concentration is 160g/L in the solution; The pH of solution is 1.50.
The invention has the beneficial effects as follows:
(1) sulfurous gas of the overwhelming majority can well be overflowed in the solution, reaches the purpose of high efficiency separation;
(2) adopt ultrasonic wave to remove, solution temperature can keep at a lower temperature, effectively reduces the loss of Citrate trianion;
(3) can effectively reduce the growing amount of sulfate radical;
(4) under the effect of multiple quadrature ultrasonic wave frequently, can remove to reduce to separate than single ultrasonic wave and use energy, increase the treatment soln amount, reduce the reaction times.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1:
As shown in Figure 1, the operation steps with the multiple separating SO 2 of quadrature ultrasonic wave frequently is as follows:
(1) in the filler reaction tower, under 30 ℃ of conditions of temperature, sulfur dioxide concentration is that 1.5% the waste gas and the 1.5mol/L citrate solution of pH value 4.5 react, and obtains containing the citrate solution of sulfurous gas; Sulfur dioxide concentration is 160g/L in the solution; The pH of solution is 1.50.
(2) solution is added in the ultrasound reactor, at frequency 20KHz, power is 40W/L, and frequency 1MHz, 40 ℃ of solution temperatures, power are under the ultrasonic wave effect of 15W/L, reacts 1 hour, and 95% sulfurous acid is decomposed, and with the form effusion solution of sulfurous gas; After surplus solution carries out conventional processing, be used for the circulation absorption and contain form waste gas of sulfur dioxide.
Embodiment 2:
Absorption process is identical with example 1, and solution composition and example 1 are basic identical.Solution is added in the ultrasound reactor, under 40 ℃ of conditions of solution temperature, at frequency 40KHz, power is 40W/L, and frequency 1MHz, power are under the ultrasonic wave effect of 10W/L, reacted 1 hour, 97.3% sulfurous acid is decomposed, and with the form effusion solution of sulfurous gas; After surplus solution carries out conventional processing, be used for the circulation absorption and contain form waste gas of sulfur dioxide.
Embodiment 3:
Absorption process is identical with example 1, and solution composition and example 1 are basic identical.Solution is added in the ultrasound reactor, under 45 ℃ of conditions of solution temperature, at frequency 60KHz, power is 40W/L, and frequency 1MHz, power are under the ultrasonic wave effect of 20W/L, reacted 1 hour, 98.2% sulfurous acid is decomposed, and with the form effusion solution of sulfurous gas; After surplus solution carries out conventional processing, be used for the circulation absorption and contain form waste gas of sulfur dioxide.
The ultrasonic effect comparison that removes sulfurous gas of single-frequency and double frequency quadrature
Claims (6)
1. method that removes sulfurous gas in the citrate solution with intensified by ultrasonic wave, it is characterized in that: under the effect of multiple quadrature ultrasonic wave frequently, make the sulfurous acid in the citrate solution that contains sulfurous gas be decomposed into sulfurous gas and water, and from solution, overflow with the form of sulfurous gas; Reaction conditions is: at solution temperature is under 40 ℃ of conditions, is 20KHz in frequency, and power is 40W/L, and frequency is 1MHz, and power is under the ultrasonic wave effect of 15W/L, reacts 1 hour.
2. a kind of method that removes sulfurous gas in the citrate solution with intensified by ultrasonic wave according to claim 1, it is characterized in that: the described preparation method who contains the citrate solution of sulfurous gas is: in the filler reaction tower, under 30 ℃ of conditions of temperature, sulfur dioxide concentration is that 1.5% the waste gas and the 1.5mol/L citrate solution of pH value 4.5 react, and obtains containing the citrate solution of sulfurous gas; Sulfur dioxide concentration is 160g/L in the solution; The pH of solution is 1.50.
3. method that removes sulfurous gas in the citrate solution with intensified by ultrasonic wave, it is characterized in that: under the effect of multiple quadrature ultrasonic wave frequently, make the sulfurous acid in the citrate solution that contains sulfurous gas be decomposed into sulfurous gas and water, and from solution, overflow with the form of sulfurous gas; Reaction conditions is: under 40 ℃ of conditions of solution temperature, at frequency 40KHz, power is 40W/L, and frequency 1MHz, power are under the ultrasonic wave effect of 10W/L, reacts 1 hour.
4. a kind of method that removes sulfurous gas in the citrate solution with intensified by ultrasonic wave according to claim 3, it is characterized in that: the described preparation method who contains the citrate solution of sulfurous gas is: in the filler reaction tower, under 30 ℃ of conditions of temperature, sulfur dioxide concentration is that 1.5% the waste gas and the 1.5mol/L citrate solution of pH value 4.5 react, and obtains containing the citrate solution of sulfurous gas; Sulfur dioxide concentration is 160g/L in the solution; The pH of solution is 1.50.
5. method that removes sulfurous gas in the citrate solution with intensified by ultrasonic wave, it is characterized in that: under the effect of multiple quadrature ultrasonic wave frequently, make the sulfurous acid in the citrate solution that contains sulfurous gas be decomposed into sulfurous gas and water, and from solution, overflow with the form of sulfurous gas; Reaction conditions is: under 45 ℃ of conditions of solution temperature, at frequency 60KHz, power is 40W/L, and frequency 1MHz, power are under the ultrasonic wave effect of 20W/L, reacts 1 hour.
6. a kind of method that removes sulfurous gas in the citrate solution with intensified by ultrasonic wave according to claim 5, it is characterized in that: the described preparation method who contains the citrate solution of sulfurous gas is: in the filler reaction tower, under 30 ℃ of conditions of temperature, sulfur dioxide concentration is that 1.5% the waste gas and the 1.5mol/L citrate solution of pH value 4.5 react, and obtains containing the citrate solution of sulfurous gas; Sulfur dioxide concentration is 160g/L in the solution; The pH of solution is 1.50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100734976A CN100386303C (en) | 2004-12-27 | 2004-12-27 | Method for eliminating sulfur dioxide in citrate solution enhanced by ultrasonic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100734976A CN100386303C (en) | 2004-12-27 | 2004-12-27 | Method for eliminating sulfur dioxide in citrate solution enhanced by ultrasonic |
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| CN1796354A CN1796354A (en) | 2006-07-05 |
| CN100386303C true CN100386303C (en) | 2008-05-07 |
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| CNB2004100734976A Expired - Fee Related CN100386303C (en) | 2004-12-27 | 2004-12-27 | Method for eliminating sulfur dioxide in citrate solution enhanced by ultrasonic |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109187716A (en) * | 2018-09-12 | 2019-01-11 | 云南森雅环保科技有限公司 | A kind of sulfur dioxide on-line monitoring method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1450845A (en) * | 1973-07-11 | 1976-09-29 | Stuaffer Chemical Co | Method for removal of sulphur dioxide from gases |
| JPH11253744A (en) * | 1998-03-11 | 1999-09-21 | Mitsubishi Heavy Ind Ltd | Exhaust gas desulfurizer |
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- 2004-12-27 CN CNB2004100734976A patent/CN100386303C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1450845A (en) * | 1973-07-11 | 1976-09-29 | Stuaffer Chemical Co | Method for removal of sulphur dioxide from gases |
| JPH11253744A (en) * | 1998-03-11 | 1999-09-21 | Mitsubishi Heavy Ind Ltd | Exhaust gas desulfurizer |
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| CN1796354A (en) | 2006-07-05 |
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Granted publication date: 20080507 Termination date: 20101227 |