CN110607079A - Asphalt modifier based on petrochemical industry waste catalyst and preparation method thereof - Google Patents
Asphalt modifier based on petrochemical industry waste catalyst and preparation method thereof Download PDFInfo
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Abstract
The application discloses asphalt modifier and preparation method based on petrochemical industry spent catalyst, asphalt modifier includes: the invention has the advantages that the asphalt mixture, the mineral powder and the FCC spent catalyst are as follows: the method is simple to realize, and 100% of FCC waste catalyst is utilized by comprehensively using the FCC waste catalyst in the asphalt mixture. And because the FCC spent catalyst is porous and has large specific surface area, the water stability and high-temperature stability of the asphalt mixture can be improved, and the road performance is improved. And meanwhile, the asphalt is used for a lower surface layer or a middle surface layer of a pavement, and the asphalt is used for wrapping the waste catalyst, so that the safety risk of heavy metal seepage can be effectively avoided.
Description
Technical Field
The invention relates to an asphalt modifier based on a petrochemical industry waste catalyst and a preparation method thereof.
Background
By the end of 2016, the annual production of FCC (fluid Catalytic cracking) waste catalyst in China has reached 10 ten thousand tons, and the FCC waste catalyst is listed in the national hazardous waste list, which inevitably increases the treatment cost of the FCC waste catalyst. The FCC catalyst is prepared by pulping aluminum sol, pseudo-boehmite, silica sol and adhesive (clay) acid to obtain slurry, spray drying, performing ion exchange, and loading rare earth RE2O3Ionic roasting of the prepared fluidized catalyst. FCC catalysisThe agent is composed of zeolite (molecular sieve) and Al2O3And SiO2The crystalline aluminosilicate with a lattice structure as a main component has large specific surface area and pore volume. Although the FCC spent catalyst loses catalytic activity, the internal pore structure of the FCC spent catalyst is not completely destroyed, and the FCC spent catalyst still has certain utilization value and can be used as an adsorbent. Common disposal routes are physical separation and chemical regeneration of spent catalyst. The physical separation method mainly selects a magnetic separation method, and a small part of catalysts which have short cycle time, light pollution (low magnetism agent), good performance and can be continuously used are screened out by the physical method, however, the catalysts which are obviously deactivated can only be treated by the traditional method.
At present, the main FCC waste catalyst treatment approach is to recycle the waste catalyst, and the waste catalyst is treated by chemical regeneration and magnetic separation technology, so that the waste catalyst has activity again and participates in catalytic reaction of petrochemical industry again, but the recovery rate of the method is low, generally between 20% and ~ 50%, in addition, researchers utilize the elements such as AL, Si and the like in the FCC waste catalyst, and the recovery rate is 100% when the elements are mixed into the production of cement, but for the cement production line, the daily output of the FCC waste catalyst is very little, and the change of raw materials inevitably needs to adjust the production parameters of the cement production line, which causes difficulty in actual production and restricts the large-scale utilization of the FCC waste catalyst.
Disclosure of Invention
The invention aims to overcome the defects and provide an asphalt modifier based on the waste catalyst in the petrochemical industry, which can realize the high-efficiency utilization of the FCC waste catalyst.
In order to achieve the purpose, the invention adopts the technical scheme that: an asphalt modifier based on a petrochemical industry waste catalyst, which is characterized by comprising: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31-35 parts of 0-3mm, 16-19 parts of 3-5mm,
35-39 parts of 5-10mm, 15-19 parts of 10-15 mm;
4-7 parts of mineral powder;
0.4-0.7 part of FCC spent catalyst.
Another object of the present invention is to provide a method for preparing an asphalt modifier based on a petrochemical industry waste catalyst, comprising:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31-35 parts of 0-3mm, 16-19 parts of 3-5mm,
35-39 parts of 5-10mm, 15-19 parts of 10-15 mm;
4-7 parts of mineral powder;
0.4-0.7 part of FCC spent catalyst;
then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
then adding asphalt with corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
The invention has the beneficial effects that:
the method is simple to realize, and 100% of FCC waste catalyst is utilized by comprehensively using the FCC waste catalyst in the asphalt mixture. And because the FCC spent catalyst is porous and has large specific surface area, the water stability and high-temperature stability of the asphalt mixture can be improved, and the road performance is improved. And meanwhile, the asphalt is used for a lower surface layer or a middle surface layer of a pavement, and the asphalt is used for wrapping the waste catalyst, so that the safety risk of heavy metal seepage can be effectively avoided.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
Example 1
The asphalt modifier based on the petrochemical industry waste catalyst comprises the following components in percentage by weight: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31 parts of 0-3mm, 16 parts of 3-5mm,
35 parts of 5-10mm and 15 parts of 10-15 mm;
4 parts of mineral powder;
0.4 part of FCC spent catalyst.
The preparation method of the asphalt modifier based on the petrochemical industry waste catalyst comprises the following steps:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31 parts of 0-3mm, 16 parts of 3-5mm,
35 parts of 5-10mm and 15 parts of 10-15 mm;
4 parts of mineral powder;
0.4 part of FCC spent catalyst.
Then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
then adding asphalt with corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
The drying time in the oven is not less than 4 ~ 6 h.
The mixing temperature is 150 ℃.
The total mixing time is 3 min.
Example 2
The asphalt modifier based on the petrochemical industry waste catalyst comprises the following components in percentage by weight: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
35 parts of 0-3mm, 19 parts of 3-5mm,
39 parts of 5-10mm and 19 parts of 10-15 mm;
7 parts of mineral powder;
0.7 part of FCC spent catalyst.
The preparation method of the asphalt modifier based on the petrochemical industry waste catalyst comprises the following steps:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
35 parts of 0-3mm, 19 parts of 3-5mm,
39 parts of 5-10mm and 19 parts of 10-15 mm;
7 parts of mineral powder;
0.7 part of FCC spent catalyst.
Then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
then adding asphalt with corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
The drying time in the oven is not less than 4 ~ 6 h.
The mixing temperature is 150 ℃.
The total mixing time is 3 min.
Example 3
The asphalt modifier based on the petrochemical industry waste catalyst comprises the following components in percentage by weight: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
33 parts of 0-3mm, 18 parts of 3-5mm,
37 parts of 5-10mm and 17 parts of 10-15 mm;
6 parts of mineral powder;
0.4-0.6 part of FCC spent catalyst.
The preparation method of the asphalt modifier based on the petrochemical industry waste catalyst comprises the following steps:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
33 parts of 0-3mm, 18 parts of 3-5mm,
37 parts of 5-10mm and 17 parts of 10-15 mm;
6 parts of mineral powder;
0.6 part of FCC spent catalyst.
Then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
then adding asphalt with corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
The drying time in the oven is not less than 4 ~ 6 h.
The mixing temperature is 150 ℃.
The total mixing time is 3 min.
Example 4
The asphalt modifier based on the petrochemical industry waste catalyst comprises the following components in percentage by weight: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31.5 parts of 0-3mm, 16.5 parts of 3-5mm,
35.5 parts of 5-10mm and 15.5 parts of 10-15 mm;
4 parts of mineral powder;
0.4 part of FCC spent catalyst.
The preparation method of the asphalt modifier based on the petrochemical industry waste catalyst comprises the following steps:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31.5 parts of 0-3mm, 16.5 parts of 3-5mm,
35.5 parts of 5-10mm and 15.5 parts of 10-15 mm;
4 parts of mineral powder;
0.4 part of FCC spent catalyst.
Then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
then adding asphalt with corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
The drying time in the oven is not less than 4 ~ 6 h.
The mixing temperature is 150 ℃.
The total mixing time is 3 min.
Example 5
The asphalt modifier based on the petrochemical industry waste catalyst comprises the following components in percentage by weight: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
34.5 parts of 0-3mm, 18.5 parts of 3-5mm,
38.5 parts of 5-10mm and 18.5 parts of 10-15 mm;
7 parts of mineral powder;
0.7 part of FCC spent catalyst.
The preparation method of the asphalt modifier based on the petrochemical industry waste catalyst comprises the following steps:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
34.5 parts of 0-3mm, 18.5 parts of 3-5mm,
38.5 parts of 5-10mm and 18.5 parts of 10-15 mm;
7 parts of mineral powder;
0.7 part of FCC spent catalyst.
Then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
then adding asphalt with corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
The drying time in the oven is not less than 4 ~ 6 h.
The mixing temperature is 150 ℃.
The total mixing time is 3 min.
Example 6
The asphalt modifier based on the petrochemical industry waste catalyst comprises the following components in percentage by weight: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
33.5 parts of 0-3mm, 18.5 parts of 3-5mm,
37.5 parts of 5-10mm and 17.5 parts of 10-15 mm;
6 parts of mineral powder;
0.4-0.6 part of FCC spent catalyst.
The preparation method of the asphalt modifier based on the petrochemical industry waste catalyst comprises the following steps:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
33.5 parts of 0-3mm, 18.5 parts of 3-5mm,
37.5 parts of 5-10mm and 17.5 parts of 10-15 mm;
6 parts of mineral powder;
0.6 part of FCC spent catalyst.
Then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
then adding asphalt with corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
The drying time in the oven is not less than 4 ~ 6 h.
The mixing temperature is 150 ℃.
The total mixing time is 3 min.
Test of
The characteristic research of the FCC spent catalyst shows that the FCC spent catalyst has a specific surface area far larger than that of mineral powder, and the specific adhesion function of the FCC spent catalyst and asphalt is larger through the surface-based adhesion function research, so that the larger the specific adhesion function is, the better the water stability of the FCC spent catalyst is directly represented. Meanwhile, the alkali component of the FCC spent catalyst is far larger than that of the common limestone mineral powder through measurement of the surface energy of the FCC spent catalyst. Since asphalt generally exhibits acidity, the surface of the alkaline aggregate is easily adsorbed and bonded to the acidic asphalt due to the presence of alkaline active sites, and forms stable chemical bonds that are not easily broken by water molecules, thus having good adhesion, and the effect of improving water stability is also demonstrated. The properties of the asphalt mixes are compared in table 1 below.
TABLE 1 asphalt mixture Property comparison Table
From table 1 it can be seen that the dynamic stability of the FCC spent catalyst is increased by nearly 2.95 times relative to the base asphalt and is close to that of SBS modified asphalt. The water stability of the FCC spent catalyst is increased by nearly 17.2% relative to the base asphalt and is superior to SBS modified asphalt. The high-temperature performance close to that of SBS modified asphalt and better water stability can be achieved by adding a small amount of FCC waste catalyst, the preparation process is simple and dry mixing is adopted, the material cost and the labor cost are greatly saved, and meanwhile, a way is provided for the treatment of the FCC waste catalyst. Has great economic benefit and social benefit.
The invention has the beneficial effects that:
the method is simple to realize, and 100% of FCC waste catalyst is utilized by comprehensively using the FCC waste catalyst in the asphalt mixture. And because the FCC spent catalyst is porous and has large specific surface area, the water stability and high-temperature stability of the asphalt mixture can be improved, and the road performance is improved. And meanwhile, the asphalt is used for a lower surface layer or a middle surface layer of a pavement, and the asphalt is used for wrapping the waste catalyst, so that the safety risk of heavy metal seepage can be effectively avoided.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (8)
1. An asphalt modifier based on a petrochemical industry waste catalyst, which is characterized by comprising: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31-35 parts of 0-3mm, 16-19 parts of 3-5mm,
35-39 parts of 5-10mm, 15-19 parts of 10-15 mm;
4-7 parts of mineral powder;
0.4-0.7 part of FCC spent catalyst.
2. The asphalt modifier based on waste catalyst of petrochemical industry according to claim 1, comprising: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31 parts of 0-3mm, 16 parts of 3-5mm,
35 parts of 5-10mm and 15 parts of 10-15 mm;
4 parts of mineral powder;
0.4 part of FCC spent catalyst.
3. The asphalt modifier based on waste catalyst of petrochemical industry according to claim 1, comprising: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
35 parts of 0-3mm, 19 parts of 3-5mm,
39 parts of 5-10mm and 19 parts of 10-15 mm;
7 parts of mineral powder;
0.7 part of FCC spent catalyst.
4. The asphalt modifier based on waste catalyst of petrochemical industry according to claim 1, comprising: asphalt mixture, mineral powder and FCC spent catalyst, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
33 parts of 0-3mm, 18 parts of 3-5mm,
37 parts of 5-10mm and 17 parts of 10-15 mm;
6 parts of mineral powder;
0.6 part of FCC spent catalyst.
5. A preparation method of an asphalt modifier based on a petrochemical industry waste catalyst is characterized by comprising the following steps:
placing the asphalt mixture, the mineral powder and the FCC spent catalyst at 105 DEG CDrying in a drying oven at 5 ℃ to constant weight;
weighing the dried coarse and fine aggregates, the mineral powder and the FCC spent catalyst according to the mass of the grading design, wherein,
the asphalt mixture comprises the following components in parts by weight according to the maximum particle size:
31-35 parts of 0-3mm, 16-19 parts of 3-5mm,
35-39 parts of 5-10mm, 15-19 parts of 10-15 mm;
4-7 parts of mineral powder;
0.4-0.7 part of FCC spent catalyst;
then placing the mixture in a drying oven to be heated to about 15 ℃ above the mixing temperature of the asphalt for later use;
preheating an asphalt mixture mixer in advance to a mixing temperature of about 10 ℃, placing the heated coarse and fine aggregates into the mixer, and properly mixing the aggregates by using a small shovel;
adding asphalt in a corresponding proportion, starting a mixer to stir while inserting a stirring blade into the mixture to stir for 1 ~ 1.5.5 min;
and (3) suspending the mixing, adding the heated mineral powder and the FCC spent catalyst, continuing to mix until the mixture is uniform, and keeping the asphalt mixture within a mixing temperature range.
6. The method for preparing asphalt modifier based on waste catalyst in petrochemical industry according to claim 5, wherein the drying time in the oven is not less than 4 ~ 6 h.
7. The method for preparing asphalt modifier based on waste catalyst in petrochemical industry according to claim 6, wherein the mixing temperature is 150 ℃.
8. The method for preparing asphalt modifier based on waste catalyst in petrochemical industry according to claim 7, wherein total mixing time is 3 min.
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| CN112745695A (en) * | 2020-12-29 | 2021-05-04 | 北京市市政工程研究院 | Rock asphalt composite modified asphalt and composite asphalt mixture and preparation method thereof |
| CN115403304A (en) * | 2021-05-29 | 2022-11-29 | 中国石油化工股份有限公司 | Recycling method of FCC (fluid catalytic cracking) waste catalyst |
| CN115521091A (en) * | 2021-06-25 | 2022-12-27 | 中国石油化工股份有限公司 | Utilization method of FCC spent catalyst |
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| CN115403304B (en) * | 2021-05-29 | 2023-11-10 | 中国石油化工股份有限公司 | Method for recycling FCC (fluid catalytic cracking) waste catalyst |
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