CN104474847B - A kind of mixture and its application for flue gas desulfurization - Google Patents
A kind of mixture and its application for flue gas desulfurization Download PDFInfo
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- CN104474847B CN104474847B CN201410572474.3A CN201410572474A CN104474847B CN 104474847 B CN104474847 B CN 104474847B CN 201410572474 A CN201410572474 A CN 201410572474A CN 104474847 B CN104474847 B CN 104474847B
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- sulfur dioxide
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Abstract
The invention discloses a kind of mixture available for flue gas desulfurization and its application.The mixture that chlorinated paraffin and base oil are formed after mixing by a certain percentage has preferable absorption to sulfur dioxide, the sulfur dioxide that is absorbed and is readily removable, and the mixture removed after sulfur dioxide can be re-used to adsorb sulfur dioxide.Compared with traditional wet method, dry method with fume desulphurization methods such as semidry methods application is upper, the present invention, which solves, both may be reused desulfurizing agent, and recyclable sulfur dioxide, the problems such as to environment non-secondary pollution.Raw material of the present invention is easy to get, and cost is low.The invention will this is global to whole flue gas desulfurization hang-up new resolving ideas is provided.
Description
Technical field
The invention belongs to environmental protection and energy field, it is related to a kind of new mixture and its application for flue gas desulfurization.
Background technology
In recent years, the sulfur dioxide pollution in China is quite serious, and current flue gas desulfurization（FGD）It is generally acknowledged maximally efficient
Control the approach of sulfur dioxide (SO2) emissions.People are both economical in research, and the method for efficient control sulfur dioxide (SO2) emissions, are
This, successively develops：With gypsum, dilute sulfuric acid process is the Wet Flue Gas Desulfurization Technology of representative；With flue gas reflux circulating fluidized bed
（RCFB）Flue gas desulfurization is the dry flue gas desulphurization technology of representative and the semi-dry process flue gas desulphurization skill by representative of spray drying process
Art.But either wet method or dry method or semidry method all suffer from the problems such as accessory substance processing is difficult, and secondary pollution is serious, sternly
The development of these methods is limited again.Ionic liquid is with its unique physicochemical properties and distinctive function in recent years（Steam
Force down, it is nonflammable, the solubility of sulfur dioxide is good etc.）Attracted people's attention in flue gas desulfurization field, its result shows ion
Liquid has preferable latency development prospect in flue gas desulfurization field.But because the intrinsic viscosity of ionic liquid is big, price compared with
Height, a large amount of synthesis are difficult, the influence for the factors such as desulfurized effect has a great influence to temperature change, constrain to a certain extent its
The field extensive use.The present invention is using chlorinated paraffin and base oil as raw material, caused mixture after being mixed with special ratios
With relatively low viscosity, there can be the effect of sulfur dioxide absorption, there is that cost is low, and raw material are cheap again, repeat and utilize, absorb
Amount changes the characteristic such as slow, and the sulfur dioxide recoverable absorbed with temperature rise.In the literature there is not yet
The report similar to the present invention, the present invention have potential development prospect in flue gas desulfurization in this international problem.
The content of the invention
Technical problems to be solved：A kind of effective, economic mixture is found, is had within the scope of an extensive temperature
The property of sulfur dioxide is adsorbed, the mixture can be reused, and will not cause the secondary pollution to environment.
This mixture of the present invention is mixed in certain proportion with base oil and chlorinated paraffin, wider
The 2-4% of mixture weight used is maintained in temperature range by the amount of sulfur dioxide absorption, the mixture sulfur dioxide absorption reaches
With the rise of temperature after to saturation, sulfur dioxide gas effusion is slow in material, has and two are absorbed in large temperature range
The ability of sulfur oxide.If this mixture to be used for the desulfurization of industrial smoke, the flue gas desulfurization under different temperatures can be met.In recent years
Come, ionic liquid shows excellent characteristic as a kind of new compound in terms of flue gas desulfurization, and ionic liquid is in itself not only
There is higher heat endurance, and have preferable absorbability to sulfur dioxide.Therefore, we to the present invention mixture with from
Sub- liquid compares in the ability of sulfur dioxide absorption, and we are by more comprehensively to ionic liquid absorption titanium dioxide
The experiment of sulphur finds, ionic liquid is that the amount of sulfur dioxide absorption gas reaches 12% or so at 40 DEG C（With the weight of ionic liquid
Than）, but it is to slowly warm up to 60 DEG C of -70 DEG C of even more high temperature in the ionic liquid that 40 DEG C of sulfur dioxide absorptions reach saturation
Afterwards, the sulfur dioxide gas scale of construction adsorbed in ionic liquid drastically declines.In addition, compared with the mixture of the present invention, although, from
Sub- liquid has preferable sulfur dioxide absorbability, but ionic liquid viscosity is big, and the factor such as price height have impact on it
Application in flue gas desulfurization field.On the contrary, although the ability of mixture sulfur dioxide absorption of the present invention is not so good as ionic liquid,
Its heat endurance is high, has the temperature range of wider sulfur dioxide absorption, and cost is low, and sulfur dioxide absorption is Physical Absorption,
It is reusable, it the characteristic such as will not pollute to environment, it is had in the desulfurization of industrial smoke relatively broad potential
Application prospect.There is not yet about with mixture of the present invention come the document report of sulfur dioxide absorption.
Technical scheme：A kind of mixture for flue gas desulfurization, described mixture are made up of chlorinated paraffin and base oil.
Preferably, described a kind of mixture for flue gas desulfurization, described chlorine in chlorinated paraffin content are 40%-
70%。
Preferably, described a kind of mixture for flue gas desulfurization, described chlorine in chlorinated paraffin content are 40-50%.
It is further preferred that a kind of described mixture for flue gas desulfurization, the chlorinity of described chlorinated paraffin are
45%。
A kind of described mixture for flue gas desulfurization, described base oil are mineral base oil, the mineral base
The kinematic viscosity of oil is 40oIt is 5-30mm under C2/s。
Preferably, described a kind of mixture for flue gas desulfurization, described mineral base oil kinematic viscosity is 40oC
It is 5-15mm down2/s。
Preferably, the weight ratio of described a kind of mixture for flue gas desulfurization, described chlorinated paraffin and base oil
For 1:99-40:60.
Preferably, the weight ratio of described a kind of mixture for flue gas desulfurization, described chlorinated paraffin and base oil
For 1:99-20:80.
It is further preferred that a kind of described mixture for flue gas desulfurization, described chlorinated paraffin and base oil
Weight ratio is 2:98-5:95.
A kind of described application for the mixture of flue gas desulfurization in flue gas desulfurization.
Technical solution of the present invention preparation method comprises the following steps：
（1）The preparation of mixture：
According to a certain percentage, chlorinated paraffin and base oil are mixed, are stirred at room temperature 30 minutes.In detail such as table
Shown in 1：
Table 1 tests mixture and composition used
In addition, the ionic liquid as control, we select 1- butyl -3- methylimidazole hexafluorophosphates（BMIF）, its
Structure is as follows：
BMIF
（2）The experiment of sulfur dioxide absorption：
1. weighing the mixture or ionic liquid of constant weight with three mouthfuls of reaction bulbs, reaction bulb is placed on to the water of certain temperature
In bath, sulfur dioxide gas is passed through under agitation, is measured the weight of three mouthfuls of reaction bulbs in different time, is recorded the liquid absorption two
The amount of sulfur oxide and time, during up to constant weight, the same amount for recording institute's sulfur dioxide absorption and time.
2. under a specified temp, after liquid absorption sulfur dioxide reaches saturation, bath temperature is raised, records not equality of temperature
Under degree, the amount of sulfur dioxide gas residual in the liquid.
3. under a specified temp, after a mixture sulfur dioxide absorption reaches saturation, washed with 12.5% ammonia spirit
The mixture is washed to remove absorbed sulfur dioxide gas.Be stripped of sulfur dioxide the mixture repeat it is same for doing
At a temperature of sulfur dioxide absorption experiment.Analogize with this, the mixture is at least employed 5 times to examine it to repeat to absorb titanium dioxide
The ability of sulphur.
Beneficial effect：Above-mentioned experiment the data obtained, which collects, to be listed in following table：
Table 2：With the amount of time different product sulfur dioxide absorption at 40 DEG C
Table 3. reaches saturated absorption SO at 40 DEG C2SO in temperature mixing thing is raised afterwards2The residual quantity of gas
When the sample 6 of table 4 is reused SO is absorbed in different time2Ability*
| Number of repetition | 0 | 1 | 2 | 3 | 4 | 5 |
| 0.5 h | 2.19% | 2.18% | 2.17% | 2.12% | 2.22% | 2.27% |
| 1.0 and | 2.18% | 2.28% | 2.26% | 2.21% | 2.23% | 2.32% |
* to absorb the weight of gas flow and sample ratio to express.
Embodiment
The present invention includes but is not limited only to following examples：
Example one:Sample 7 absorb and the experiment of scrubbing CO_2：
Step 1）
It is 5-7mm that kinematic viscosity is added in 150ml reaction bulbs2/ s base oil（100.02 g）And be put into water-bath, rise
Tepidarium starts to be passed through sulfur dioxide gas into reaction bulb to 40 DEG C, and connects device for absorbing tail gas, is protected in venting process
The bath temperature of sample is held at 40 DEG C.Weigh to obtain the g of sulfur dioxide absorption 2.21 after 0.5 h of continuous ventilation, continues at such a temperature
Ventilation is until saturation（Sample reaches constant weight after about 1 h）After sulfur dioxide absorption amount of weighing be 2.21 g.（Specific data are shown in Table 2）.
Step 2）Step 1 sulfur dioxide absorption is reached to the sample desulfurization of saturation：
Sample obtained by step 1 is reentered into water-bath and slowly heated up（10℃/0.5 h）, claim when reaching 50 DEG C
Weight, sulfur dioxide gas residual quantity is 1.93 g in sample, and at 60 DEG C, sulfur dioxide gas residual quantity is 1.56 g in sample,
At 70 DEG C, sulfur dioxide gas residual quantity is 1.23 g in sample, and at 80 DEG C, sulfur dioxide gas residual quantity is 1.13 in sample
G, at 90 DEG C, sulfur dioxide gas residual quantity is 0.84 g in sample.（Specific data are shown in Table 3）.
Example two:Sample 6 absorb and the experiment of scrubbing CO_2：
Step 1）The preparation of sample 6：
It is 5-7mm that kinematic viscosity is added in 150ml reaction bulbs2/ s base oil（98.01 g）, stir lower addition chlorinty
For 45% chlorinated paraffin（2.0 g）, the mixture is stirred at room temperature 30 minutes after adding, to reach well mixed.
Step 2）Continuously lead to sulfur dioxide gas until saturation at 40 DEG C：
Sample is put into water-bath made from step 1, and heating water-bath starts to be passed through titanium dioxide to after 40 DEG C into reaction bulb
Sulphur gas, and device for absorbing tail gas is connected, the bath temperature that sample is kept in venting process is 40 DEG C.0.5 h of continuous ventilation
After weigh sulfur dioxide absorption amount is 2.19 g, continue to lead at such a temperature sulfur dioxide gas until saturation（Sample after about 1 h
Product constant weight）Afterwards, weigh sulfur dioxide absorption gas is 2.28 g.（Specific data are shown in Table 2）
Step 3）Step 2 sulfur dioxide absorption is reached to the sample desulfurization of saturation：
Sample obtained by step 2 is reentered into water-bath and slowly heated up（10℃/0.5 h）, weighed when reaching 50 DEG C
Sample, wherein sulfur dioxide gas residual quantity are 1.99 g, are weighed at 60 DEG C, sulfur dioxide gas residual quantity is 1.61 in sample
G, at 70 DEG C, sulfur dioxide gas residual quantity is 1.23 g in sample, is weighed at 80 DEG C, sulfur dioxide gas residual quantity in sample
Weighed for 1.16 g, at 90 DEG C, sulfur dioxide gas residual quantity is 1.02 g in sample.Stop heating.（Specific data are shown in Table 3）
Sample 1-5 and 8-11 are available to be prepared with the identical method of example two, then by obtaining 40 DEG C the step of example two when,
The amount of the sample sulfur dioxide absorption and the data that the residual quantity of sulfur dioxide in the sample is raised with temperature.
Example three:Sample 6 repeat the experiment of sulfur dioxide absorption：
Sample obtained by the step 3 of example two is cooled to room temperature, detects no sulfur dioxide gas with 12.5% ammonia scrubbing once
After body, through drying, then repeatedly example two the step of two and step 3 operation.Step carries out five experiments, specific data in due order
It is listed in table 4.
Example four：The experiment of the sulfur dioxide absorption at room temperature of sample 6：
Sample 6 will be contained（100.21 g）There-necked flask as room temperature（25℃）Under, sulfur dioxide gas is passed through into bottle,
And connect device for absorbing tail gas.Weighed after 0.5 h of continuous ventilation, the amount of sulfur dioxide absorption is 3.07 g, is continued in the temperature
Under be passed through sulfur dioxide gas until sample absorb saturation（Sample constant weight after about 1 h）After weigh, sulfur dioxide absorption gas flow
For 3.70 g.
Claims (7)
1. a kind of mixture for flue gas desulfurization, it is characterised in that described mixture is made up of chlorinated paraffin and base oil；
Described chlorine in chlorinated paraffin content is 40%-70%；
Described base oil is mineral base oil, and the kinematic viscosity of the mineral base oil is 40oIt is 5-30mm under C2/s；
Described chlorinated paraffin and the weight ratio of base oil are 1:99-40:60.
A kind of 2. mixture for flue gas desulfurization as claimed in claim 1, it is characterised in that described chlorine in chlorinated paraffin
Content is 40-50%.
A kind of 3. mixture for flue gas desulfurization as claimed in claim 1, it is characterised in that the chlorine of described chlorinated paraffin
Content is 45%.
A kind of 4. mixture for flue gas desulfurization as claimed in claim 1, it is characterised in that described mineral base oil fortune
Kinetic viscosity is 40oIt is 5-15mm under C2/s。
A kind of 5. mixture for flue gas desulfurization as claimed in claim 1, it is characterised in that described chlorinated paraffin and base
The weight ratio of plinth oil is 1:99-20:80.
A kind of 6. mixture for flue gas desulfurization as claimed in claim 1, it is characterised in that described chlorinated paraffin and base
The weight ratio of plinth oil is 2:98-5:95.
A kind of 7. application for the mixture of flue gas desulfurization in flue gas desulfurization as described in claim 1 to 6 is any.
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Owner name: SUZHOU YOUJUN ENVIRONMENTAL SCIENCE AND TECHNOLOGY Free format text: FORMER OWNER: SUZHOU VIVOTIDE BIOTECHNOLOGIES CO., LTD. Effective date: 20150909 |
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Effective date of registration: 20150909 Address after: 215000, building 302, building B, science and Technology Pioneer Park, 31 Soochow North Road, Suzhou, Jiangsu, Wuzhong District Applicant after: SUZHOU YOUJUN ENVIRONMENTAL SCIENCE AND TECHNOLOGY CO., LTD. Address before: Wuzhong District town Suzhou city Jiangsu province 215000 gold Jinchang Road No. 360 Applicant before: Suzhou Vivotide Biotechnologies Co., Ltd. |
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