A kind of selective desulfurization agent and its preparation method and application
Technical field
The present invention relates to technical field of gasoline, specifically a kind of selective desulfurization agent and its preparation method and application.
Background technology
The ultra-deep desulfurization of gasoline has become a major issue urgently to be resolved hurrily in world wide.Combustion of sulfur in gasoline
Generating oxysulfide (SOx) is one of main pollutant in air, and it is discharged in the air and can form acid rain, destroys ecological ring
Border.In addition, sulfur oxide also can corrosion and damage engine components, make motor-driven vehicle gas disposal catalyst poisoning, reduce it and urge
Change activity, increase the discharge of particulate pollutant, increase the pollution of urban environment.Therefore, limiting sulfur content is motor petrol standard
In an important indicator, be also evaluate gasoline cleaning degree key factor.External gasoline blend component only has 34% in constituting
It is catalytic cracking (FCC) gasoline, the blend component of the product oil of China has 80% (volume fraction) to be derived from FCC gasoline, and gasoline
From FCC gasoline, therefore, the sulfur content being effectively reduced using which kind of technique in FCC gasoline becomes China to the sulphur source of middle 85-95%
The matter of utmost importance that quality of gasoline upgrading faces.
Traditional gasoline desulfurization technology can be divided into hydrodesulfurization and two kinds of desulfurization of absorption.Hydrodesulfurization need high temperature, high pressure,
Substantial amounts of hydrogen wastage, also can cause the significantly loss of octane number with the saturation of olefin(e) compound.Absorption method gasoline desulfurization
There is Low investment, lower operational cost.But the physical adsorption process removal efficiency with various molecular sieves, activated carbon as representative is relatively
Low, and the life-span is shorter.Also there is discarded adsorbent secondary pollution and process problem in some materials.Additionally, existing desulfurizing agent is more
Using materials such as activated carbon, ZSM-5, illite makes it seldom be used due to the structure of its own.
Content of the invention
It is an object of the invention to provide a kind of selective desulfurization agent and its preparation method and application, to solve above-mentioned background
The problem proposing in technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of selective desulfurization agent, is made up of the following raw material according to weight portion:Illite 28-36 part, hydroxypropyl guar
Locust beam gum 1-5 part, perillaldehyde 3-7 part, acetic acid 11-19 part.
As the further scheme of the present invention:Described selective desulfurization agent, is made up of the following raw material according to weight portion:She
Sharp stone 30-34 part, hydroxypropylguar 2-4 part, perillaldehyde 4-6 part, acetic acid 13-17 part.
As the further scheme of the present invention:Described selective desulfurization agent, is made up of the following raw material according to weight portion:She
32 parts of sharp stone, 3 parts of hydroxypropylguar, 5 parts of perillaldehyde, 15 parts of acetic acid.
The present invention another object is that provides a kind of preparation method of selective desulfurization agent, comprises the steps of:
1) 65% ethanol of 6.8 times of acetic acid and its quality is mixed, prepared acetic acid solution;
2) by illite and hydroxypropylguar mixed grinding 1.5-1.6h, it is subsequently adding acetic acid solution, is warming up to 69
DEG C and seal stir process 1.9h at such a temperature, then heat to 83 DEG C and Deca perillaldehydes, in this temperature after being added dropwise to complete
Lower supersound process 22min, ultrasonic power is 1000W, then stirs at a temperature of 99-101 DEG C to dry, then in 440 DEG C of horse
Not in stove, calcining 4.3h obtains final product desulfurizing agent.
The present invention another object is that offer described desulfurizing agent application in the oil.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention with illite as raw material, after hydroxypropylguar mixed grinding, then the place through peracetic acid, perillaldehyde
The desulfurizing agent that reason etc. is obtained, makes gasoline in the case that RON loss is less than 2.0, can obtain sulfur content super in below 6 μ g/g
The gasoline of low sulfur content.The present invention is good to the selectivity of sulfur, desulfurization depth is high, can sulfur-containing compound in deep removal gasoline
While, it is to avoid the loss of octane number that olefins hydrogenation causes, long service life, non-secondary pollution more friendly to environment,
Regenerability is good.Preparation process is simple of the present invention, easy to operate, easy to control, stable performance, low production cost, it is suitable to industrialization
Produce.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of selective desulfurization agent, it is made up of the following raw material according to weight portion:Illite 28
Part, 1 part of hydroxypropylguar, 3 parts of perillaldehyde, 11 parts of acetic acid.
The ethanol that 6.8 times of volumetric concentration of acetic acid and its quality is 65% is mixed, prepared acetic acid solution.By illite with
Hydroxypropylguar mixed grinding 1.5h, is subsequently adding acetic acid solution, is warming up to 69 DEG C and seals at such a temperature at stirring
Reason 1.9h, then heats to 83 DEG C and Deca perillaldehydes, supersound process 22min at such a temperature after being added dropwise to complete, ultrasonic power
For 1000W, then stir at a temperature of 99 DEG C to dry, then in 440 DEG C of Muffle furnace, calcining 4.3h obtains final product desulfurizing agent.
Embodiment 2
In the embodiment of the present invention, a kind of selective desulfurization agent, it is made up of the following raw material according to weight portion:Illite 36
Part, 5 parts of hydroxypropylguar, 7 parts of perillaldehyde, 19 parts of acetic acid.
6.8 times of 65% ethanol of acetic acid and its quality is mixed, prepared acetic acid solution.By illite and hydroxypropyl guar bean
Glue mixed grinding 1.6h, is subsequently adding acetic acid solution, is warming up to 69 DEG C and seals stir process 1.9h, Ran Housheng at such a temperature
Temperature to 83 DEG C and Deca perillaldehyde, supersound process 22min at such a temperature after being added dropwise to complete, ultrasonic power is 1000W, then
Stir at a temperature of 101 DEG C to dry, in 440 DEG C of Muffle furnace, then calcine 4.3h obtain final product desulfurizing agent.
Embodiment 3
In the embodiment of the present invention, a kind of selective desulfurization agent, it is made up of the following raw material according to weight portion:Illite 30
Part, 2 parts of hydroxypropylguar, 4 parts of perillaldehyde, 13 parts of acetic acid.
6.8 times of 65% ethanol of acetic acid and its quality is mixed, prepared acetic acid solution.By illite and hydroxypropyl guar bean
Glue mixed grinding 1.55h, is subsequently adding acetic acid solution, is warming up to 69 DEG C and seals stir process 1.9h at such a temperature, then
It is warming up to 83 DEG C and Deca perillaldehydes, supersound process 22min at such a temperature after being added dropwise to complete, ultrasonic power is 1000W, then
Stir at a temperature of 100 DEG C to dry, in 440 DEG C of Muffle furnace, then calcine 4.3h obtain final product desulfurizing agent.
Embodiment 4
In the embodiment of the present invention, a kind of selective desulfurization agent, it is made up of the following raw material according to weight portion:Illite 34
Part, 4 parts of hydroxypropylguar, 6 parts of perillaldehyde, 17 parts of acetic acid.
6.8 times of 65% ethanol of acetic acid and its quality is mixed, prepared acetic acid solution.By illite and hydroxypropyl guar bean
Glue mixed grinding 1.55h, is subsequently adding acetic acid solution, is warming up to 69 DEG C and seals stir process 1.9h at such a temperature, then
It is warming up to 83 DEG C and Deca perillaldehydes, supersound process 22min at such a temperature after being added dropwise to complete, ultrasonic power is 1000W, then
Stir at a temperature of 100 DEG C to dry, in 440 DEG C of Muffle furnace, then calcine 4.3h obtain final product desulfurizing agent.
Embodiment 5
In the embodiment of the present invention, a kind of selective desulfurization agent, it is made up of the following raw material according to weight portion:Illite 32
Part, 3 parts of hydroxypropylguar, 5 parts of perillaldehyde, 15 parts of acetic acid.
6.8 times of 65% ethanol of acetic acid and its quality is mixed, prepared acetic acid solution.By illite and hydroxypropyl guar bean
Glue mixed grinding 1.55h, is subsequently adding acetic acid solution, is warming up to 69 DEG C and seals stir process 1.9h at such a temperature, then
It is warming up to 83 DEG C and Deca perillaldehydes, supersound process 22min at such a temperature after being added dropwise to complete, ultrasonic power is 1000W, then
Stir at a temperature of 100 DEG C to dry, in 440 DEG C of Muffle furnace, then calcine 4.3h obtain final product desulfurizing agent.
Comparative example 1
In addition to not containing hydroxypropylguar, its material content and preparation process are consistent with embodiment 5.
Comparative example 2
In addition to not containing perillaldehyde, its material content and preparation process are consistent with embodiment 5.
Comparative example 3
In addition to not containing hydroxypropylguar and perillaldehyde, its material content and preparation process are consistent with embodiment 5.
Embodiment 6
Selective desulfurization agent using above-described embodiment 1-5 and comparative example 1-3 gained is selected to sour gasoline respectively
The desulfurization of selecting property, comprises the following steps that:
Sulfur content is taken off with the selectivity of embodiment 1-5 and comparative example 1-3 gained respectively in the sour gasoline of 398 μ g/g
Sulfur agent is in feeding liquid volume space velocity 2h-1, under conditions of 100 DEG C of temperature, pressure 0.8MPa, hydrogen and sour gasoline volume ratio 100
Contacted.
Sour gasoline used and respectively through embodiment 1-5 and comparative example 1-3 gained in above-mentioned Application Example
Selective desulfurization agent carries out total sulfur in the sulfur-free gasoline of gained after desulfurization, alkene, research octane number (RON), RON loss, desulfurization degree
After testing or calculate, it the results are shown in Table 1.
Table 1
As can be seen from the above table, catalytically cracked gasoline inferior can be processed as sulfur content by the selective desulfurization agent of the present invention
<The high-quality cleaning sulfur-free gasoline of 6 μ g/g, research octane number (RON) RON loses<2.0 units.
Embodiment 7
Using embodiment 5 gained selective desulfurization agent to sulfur content 398 μ g/g sour gasoline in feeding liquid volume
Air speed 2h-1, 100 DEG C of temperature, pressure 0.8MPa, hydrogen process 10h with carrying out under conditions of sour gasoline volume ratio 100 contacting
Afterwards, that is, the desulfurization process of 1 selective desulfurization agent are completed.
The above-mentioned selective desulfurization agent completing 1 desulfurization process is regenerated, comprises the following steps that:
It is regeneration gas that above-mentioned regenerative process adopts air, and control volume of air air speed is 200h-1, temperature be 440 DEG C, often
Pressure carries out burning sulfur 2.5h, is then down to room temperature, that is, the regeneration of the selective desulfurization agent after completing to inactivate.
By above-mentioned complete 1 time regeneration after selective desulfurization agent to sulfur content 398 μ g/g sour gasoline again according to
Above-mentioned condition carries out desulfurization process, that is, repeat above-mentioned desulfurization, regeneration 5 times, 10 times.
Using the regeneration 1 time of above-mentioned gained, 5 times, the selective desulfurization agent of 10 times respectively sour gasoline is carried out with desulfurization, institute
Sour gasoline is that total sulfur in raw oil and the sulfur-free gasoline of gained, alkene, research octane number (RON), desulfurization degree the results are shown in Table
2:
Table 2
As can be seen from the above table, the selective desulfurization agent of the present invention, its through 10 times regeneration after, its desulfurization degree still up to
99.5-99.7%, has been indicated above during sour gasoline desulfurization, the activity of selective desulfurization agent of the present invention, selection
Property is good, and every reactivity worth index good stability of the gasoline after desulfurization.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of description
Using description as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.