CN109925904A - The method for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave - Google Patents
The method for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave Download PDFInfo
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- CN109925904A CN109925904A CN201910258357.2A CN201910258357A CN109925904A CN 109925904 A CN109925904 A CN 109925904A CN 201910258357 A CN201910258357 A CN 201910258357A CN 109925904 A CN109925904 A CN 109925904A
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Abstract
The invention discloses a kind of method for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, the absorbent preparation process being related in air pollution control technique.Alkaline absorbent powder of the average diameter less than 10mm is added in slurry container, is mixed and stirred for being formed alkaline absorbent slurries with water, the mass ratio of water and alkaline absorbent is greater than 2:1.The ultrasonic wave that frequency is 20KHz~400KHz is issued to alkaline absorbent slurries by supersonic generator, makes ultrasonic wave to action time 1~15 minute of alkaline absorbent slurries, obtains ultra-fine alkaline absorbent slurries.Further appropriate carrying body can be added in ultra-fine alkaline absorbent slurries, stir evenly, be attached to ultra-fine alkaline absorbent uniformly in carrying body.The present invention, which has, to be substantially reduced absorbent granules partial size, increases operation rate, and preparation time is short and prepares convenient, and the advantages that absorbent of high efficiency, low cost is prepared online may be implemented.
Description
Technical field
It the present invention relates to the use of the method that ultrasonic wave prepares ultra-fine alkaline absorbent slurries, belong to air pollution control technique
Field.
Background technique
Acid gas contaminants mainly have oxysulfide, nitrogen oxides etc., are discharged into atmosphere, and meeting generation environment pollution is asked
Topic.Acid gas contaminants are mainly removed using with alkaline absorbent generation neutralization reaction.For example, to sulfur dioxide
Improvement, it is external at present mainly to use Limestone-gypsum Wet Flue Gas Desulfurization Process technology, utilize sulfur dioxide and lime stone alkalinity to absorb
Agent slurries occur neutralization reaction and generate calcium sulfite or calcium sulfate, realize the purpose of scrubbing CO_2.With Wet Flue Gas Desulfurization Technique
It compares, dry method and Summary of Semi-dry Flue Gas Desulfurization have many advantages, such as low cost, low expense, low water consumption and compared with high desulfurization efficiency,
With good development prospect.However, being existed at present using the dry method of solid powder desulfurizing agent and Summary of Semi-dry Flue Gas Desulfurization
The low problem low with desulfuration efficiency of generally existing desulfurizer calcium utilization in practical engineering application, the main reason is that desulfurizing agent
The partial size of grain is larger, causes the reactivity of desulfurizing agent lower.Because of SO2Desulfurizing agent is occurred mainly in reacting for desulfurizing agent
Grain surface, sorbent particle partial size is bigger, and specific surface area is smaller, desulfurizing agent and SO2Contact probability it is smaller, so as to cause de-
The calcium utilization and system desulfuration efficiency of sulphur agent are low.For this problem, several researchers have proposed using lump lime into
The alkaline absorbent agent preparation method of row hydration reaction plays a significant role to reducing absorbent granules partial size and improving activity,
Such as Chinese invention patent ZL200610165583.9.But when desulfurizing agent raw material powder lesser for granularity, above method institute
Sorbent particle is difficult to reach better effects in the slurries of preparation, influence the subsequent desulphurization reaction utilization rate of desulfurizing agent and with load
Carrier supports effect.Therefore develop a kind of ultra-fine alkaline absorbent slurries preparation side for fine powder desulfurizing agent raw material
Method, the removal effect for promoting acidic gaseous pollutant are of great significance.
Summary of the invention
The present invention is intended to provide the method for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, is substantially reduced alkaline absorption
Agent grain diameter improves its activity, to improve absorbent utilization rate and pollutant removing efficiency.
The invention is realized by the following technical scheme:
The method for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, comprising:
Alkaline absorbent powder of the average diameter less than 10mm is added in slurry container, is mixed and stirred for forming alkali with water
Property absorbent slurry, the mass ratio of the water and alkaline absorbent is greater than 2:1；
The ultrasonic wave that frequency is 20KHz~400KHz is issued to alkaline absorbent slurries by supersonic generator, makes to surpass
Sound wave is 1~15 minute to the action time of alkaline absorbent slurries, obtains ultra-fine alkaline absorbent slurries.
In above-mentioned technical proposal, the method also includes:
Appropriate carrying body is added in ultra-fine alkaline absorbent slurries, is stirred evenly, keeps ultra-fine alkaline absorbent uniform
It is attached in carrying body.
The carrying body selects coal particle, coke granule, coal ash particle, metallurgical slag particle, polytetrafluoroethylgranule granule, pottery
Any one or more of porcelain particle, biological particles, sand and zeolite granular mixture.
The alkaline absorbent selects calcium oxide, calcium hydroxide, calcium carbonate, magnesia, magnesium hydroxide, sodium hydroxide, carbon
Any one or more mixtures of sour sodium, sodium bicarbonate.
The supersonic generator includes ultrasonic wave transport element；The supersonic generator and alkaline absorbent slurries it
Between use the direct way of contact, by ultrasonic wave transport element be placed in slurry container in and be immersed under slurries liquid level, directly with slurry
Liquid contact.
Mediate contact mode is used between the supersonic generator and alkaline absorbent slurries, supersonic generator is surround
Formula is close to 200 millimeters of alkaline absorbent liquid level of slurry for being arranged in the slurry container outer surface, and slurry container being arranged in
Below.
The ultrasonic power density is 0.05~1.5w/cm2。
The present invention has the following advantages and beneficial effects: the method for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave,
It can be not only substantially reduced absorbent granules partial size, improve the utilization rate of absorbent granules, realized in lower absorbent consumption
Under the premise of reach higher acid gas removal efficiency, and since preparation time is short and preparation is simple, may be implemented efficiently low
The absorbent of cost is prepared online；Have the advantages that absorbent utilization rate is high, it is low to implement simple and operation and maintenance cost, can be used for
The removing of the acidic gaseous pollutant of the industries such as Industrial Boiler, steel.
Specific embodiment
A specific embodiment of the invention and the course of work are further described below.
The process for preparing ultra-fine alkaline absorbent slurries includes:
Alkaline absorbent powder of the average diameter less than 10mm is added in slurry container, is mixed and stirred for forming alkali with water
Property absorbent slurry, the mass ratio of water and alkaline absorbent is greater than 2:1；
The ultrasonic wave that frequency is 20KHz~400KHz is issued to alkaline absorbent slurries by supersonic generator, makes to surpass
Sound wave is 1~15 minute to the action time of alkaline absorbent slurries, obtains ultra-fine alkaline absorbent slurries.Ultrasonic power is close
Degree is 0.05~1.5w/cm2。
After acquisition prepares ultra-fine alkaline absorbent slurries, appropriate carrying body further can also be added to ultra-fine alkalinity and inhaled
It receives in agent slurries, stirs evenly, be attached to ultra-fine alkaline absorbent uniformly in carrying body.Carrying body selects coal particle, coke
Particle, coal ash particle, metallurgical slag particle, polytetrafluoroethylgranule granule, ceramic particle, biological particles, sand and zeolite granular
Any one or more of mixture.
Above-mentioned alkaline absorbent selects calcium oxide, calcium hydroxide, calcium carbonate, magnesia, magnesium hydroxide, sodium hydroxide, carbon
Any one or more mixtures of sour sodium, sodium bicarbonate.
The container that alkaline absorbent is prepared and held includes pulping tank, middle storage tank or fluid reservoir, is referred to as slurry container.Ultrasound
Using directly contact or two kinds of embodiments of mediate contact between wave producer and alkaline absorbent slurries.
One of embodiment: supersonic generator includes ultrasonic wave transport element；The supersonic generator and alkali
Property absorbent slurry between use the direct way of contact, by ultrasonic wave transport element be placed in slurry container in and be immersed in slurries liquid
Under face, directly and slurry liquid contacts.
Another embodiment: mediate contact mode, ultrasound are used between supersonic generator and alkaline absorbent slurries
Wave producer circulating type, which is close to, to be arranged in the slurry container outer surface, and the alkaline absorbent slurries of slurry container are arranged in
200 millimeters of liquid level or less.
The principle of the method for the present invention that the ultra-fine absorbent slurry of alkalinity is prepared using ultrasonic wave is as follows: partial size is smaller
Alkaline absorbent powder and water be mixed in alkaline absorbent slurry processes, such as absorbents such as calcium, magnesium-based, these absorptions
Agent be difficult it is soluble in water, majority be present in slurries with particulate form, and due between particle viscosity it is larger, be easy to happen cluster of grains
It is poly-, become the bigger particle of partial size.For gaseous acid gas for the reacting of fertile absorber in alkaline slurry, in slurries
Particle size have important influence, partial size it is more big be unfavorable for reaction progress reach micron order, instead on the contrary, partial size is smaller
Answer rate that can be substantially improved.Particle agglomeration is to cause the major reason that grain diameter size increases in alkaline absorbent slurries.By
The intermolecular mutual attractive force of grain fraction is relied primarily in intergranular effect, it is simple to rely on the Mechanical Crushings such as stirring mode hardly possible
Substantially to reduce alkaline absorbent serous granule granularity.In method of the present invention, using between active force granulin molecule more
The ultrasonic method destroyed is concentrated, by selecting the sound wave of determining frequency, can effectively be obtained the particle in alkaline absorbent slurries
To be crushed, to prepare alkaline absorbent slurries of the average grain diameter less than 20 microns, subsequent acidic can be used directly or indirectly in
In the removing process of gas, for example, can be used for slurries needed for rotary spraying and drying；The preparation of loaded desulfurizing agent waited
Journey.
Embodiment: the calcium lime powder (CaO) for being used for rotary spraying and drying desulfurization (SDA) is obtained from domestic somewhere, according to water
It is that 5:1 is mixed and stirred for preparing alkaline absorbent slurries with calcium lime powder mass ratio.Ultrasonic frequency is 25KHz in test,
Power density is 0.5w/cm2.It carries out according to grain diameter corresponding to 80% cumulative volume with and without ultrasonication slurries
Comparison: not using in the slurries of ultrasonication, which is 90 microns；Using in the slurries after ultrasonication, the partial size
It is 23 microns.The grain diameter in alkaline absorbent slurries is significantly reduced by ultrasonication, is imitated for subsequent SDA desulfurization
Fruit, which is promoted, provides effective means.
Since the grain diameter that the slurries being prepared contain is smaller, it is not easy to deposit, can also be kept away using this method
Exempt from the blockage problem of slurries conveyance conduit, guarantees system stable operation.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. the method for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, which is characterized in that the described method includes:
Alkaline absorbent powder of the average diameter less than 10mm is added in slurry container, is mixed and stirred for forming alkaline suction with water
The mass ratio of receipts agent slurries, the water and alkaline absorbent is greater than 2:1；
The ultrasonic wave that frequency is 20KHz~400KHz is issued to alkaline absorbent slurries by supersonic generator, makes ultrasonic wave
Action time to alkaline absorbent slurries is 1~15 minute, obtains ultra-fine alkaline absorbent slurries.
2. the method according to claim 1 for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, which is characterized in that institute
State method further include:
Appropriate carrying body is added in ultra-fine alkaline absorbent slurries, is stirred evenly, adheres to ultra-fine alkaline absorbent uniformly
In carrying body.
3. the method according to claim 2 for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, it is characterised in that: institute
It states carrying body and selects coal particle, coke granule, coal ash particle, metallurgical slag particle, polytetrafluoroethylgranule granule, ceramic particle, life
Any one or more of material grains, sand and zeolite granular mixture.
4. the method according to claim 1 for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, which is characterized in that institute
It states alkaline absorbent and selects calcium oxide, calcium hydroxide, calcium carbonate, magnesia, magnesium hydroxide, sodium hydroxide, sodium carbonate, bicarbonate
Any one or more mixtures of sodium.
5. the method according to claim 1 for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, which is characterized in that institute
Stating supersonic generator includes ultrasonic wave transport element；Using direct between the supersonic generator and alkaline absorbent slurries
Ultrasonic wave transport element is placed in slurry container and is immersed under slurries liquid level, directly and slurry liquid contacts by the way of contact.
6. the method according to claim 1 for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, which is characterized in that institute
It states using mediate contact mode between supersonic generator and alkaline absorbent slurries, supersonic generator circulating type, which is close to, to be set
It sets in the slurry container outer surface.
7. the method according to claim 6 for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, which is characterized in that institute
It states supersonic generator and is arranged in 200 millimeters of alkaline absorbent liquid level of slurry of slurry container or less.
8. the method according to claim 1 for preparing ultra-fine alkaline absorbent slurries using ultrasonic wave, it is characterised in that: institute
Stating ultrasonic power density is 0.05~1.5w/cm2。
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111195A (en) * | 1984-06-28 | 1986-01-18 | Kiichi Kiyomiya | Quick production of mineralized potable water |
| CN1262223A (en) * | 1999-12-29 | 2000-08-09 | 李根福 | Process for preparing nm-class calcium carbonate by ultrasonic cavitation technique |
| CN1164495C (en) * | 2002-07-29 | 2004-09-01 | 上海天福机电化工技术研究所 | Process for producing nano calcium carbonate by ultrasonic cavitation technology |
| CN101007236A (en) * | 2006-12-22 | 2007-08-01 | 清华大学 | Preparation method of ultra-fine desulfurizer slurry and device thereof |
| CN104208998A (en) * | 2014-08-28 | 2014-12-17 | 清华大学 | Coal mixture with desulfurization effect and preparation method and application of coal mixture |
| CN108042888A (en) * | 2017-12-21 | 2018-05-18 | 华南农业大学 | The atomization production and manufacture device of ultrafine dust drug |
| CN108097140A (en) * | 2017-12-15 | 2018-06-01 | 陕西大秦环境科技有限公司 | A kind of intensified by ultrasonic wave pulse suspension formula carbide slag slurrying integrated apparatus |
-
2019
- 2019-04-01 CN CN201910258357.2A patent/CN109925904A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111195A (en) * | 1984-06-28 | 1986-01-18 | Kiichi Kiyomiya | Quick production of mineralized potable water |
| CN1262223A (en) * | 1999-12-29 | 2000-08-09 | 李根福 | Process for preparing nm-class calcium carbonate by ultrasonic cavitation technique |
| CN1164495C (en) * | 2002-07-29 | 2004-09-01 | 上海天福机电化工技术研究所 | Process for producing nano calcium carbonate by ultrasonic cavitation technology |
| CN101007236A (en) * | 2006-12-22 | 2007-08-01 | 清华大学 | Preparation method of ultra-fine desulfurizer slurry and device thereof |
| CN104208998A (en) * | 2014-08-28 | 2014-12-17 | 清华大学 | Coal mixture with desulfurization effect and preparation method and application of coal mixture |
| CN108097140A (en) * | 2017-12-15 | 2018-06-01 | 陕西大秦环境科技有限公司 | A kind of intensified by ultrasonic wave pulse suspension formula carbide slag slurrying integrated apparatus |
| CN108042888A (en) * | 2017-12-21 | 2018-05-18 | 华南农业大学 | The atomization production and manufacture device of ultrafine dust drug |
Non-Patent Citations (2)
| Title |
|---|
| 张宇等: "颗粒分散", 《材料导报》 * |
| 曾贵玉等: "《微纳米含能材料》", 31 May 2015, 国防工业出版社 * |
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Application publication date: 20190625 |