CN113773868B - Method for purifying high-viscosity oil and co-producing coke - Google Patents
Method for purifying high-viscosity oil and co-producing coke Download PDFInfo
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- CN113773868B CN113773868B CN202111154195.1A CN202111154195A CN113773868B CN 113773868 B CN113773868 B CN 113773868B CN 202111154195 A CN202111154195 A CN 202111154195A CN 113773868 B CN113773868 B CN 113773868B
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- coke
- filler
- viscosity oil
- membrane
- purifying high
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
Abstract
The invention discloses a method for purifying high-viscosity oil and co-producing coke, which comprises the following steps: (a) filtering the high-viscosity oil product by using the filler at a working temperature to obtain a clear liquid and filler mixture; the working temperature is 50-200 ℃, and the filler is a granular material with carbon content more than or equal to 30%; (b) heating the clear liquid to 100-350 ℃ for membrane separation to obtain a purified oil product and a concentrated solution; the filtration precision of the membrane is 20-500 nm; (c) and carbonizing the filler mixture, or carbonizing the filler mixture after mixing the filler mixture with the concentrated solution to obtain the coke block. Realizes the dual functions of oil product purification and coke production, changes waste into valuable and greatly improves the benefit of the product.
Description
Technical Field
The invention belongs to the technical field of oil treatment, relates to a method for purifying oil and co-producing coke, and particularly relates to a method for purifying oil with high viscosity such as coal tar, waste engine oil and the like and co-producing coke.
Background
The high-viscosity oil product comprises coal tar, waste engine oil and the like; the coal tar is black or black brown viscous liquid with irritant odor generated during coal dry distillation; the used oil is the oil mixed with water, dust, other miscellaneous oil and impurities such as metal powder generated by machine part abrasion, which causes the color to become black and the viscosity to increase, so that the oil gradually changes, and organic acid, colloid and asphalt-like substances are generated.
The coke for the steelmaking blast furnace has uniform granularity requirement and is generally in a block shape; when in use, coke reaches a hearth from the charging to the furnace hearth, is influenced by various factors inside and outside and is subjected to mechanical actions such as collision, extrusion, abrasion and the like; carbon dissolution loss reaction, alkali metal corrosion, slag iron corrosion, chemical action of dissolving into molten iron and the like; the average particle size of coke from charging to hearth is reduced by 20-40%. Therefore, the quality of the coke plays an important role in the deterioration of the coke itself, and the influence of the ash content, the lumpiness, and the strength of the coke is most significant. Generally, steel enterprises have coke production devices to meet steel making requirements, but the produced coke can generate coke powder which accounts for about 30% of the total yield and is less than 20mm due to crushing, collision, extrusion and the like. This type of coke powder cannot be used as coke in blast furnaces (steel-making companies typically grind coke powder for use as coal injection). However, the price of the coke is about 3-4 times of that of coal, and steelmaking enterprises urgently need to make the coke powder into coke with the size of 20-80 mm; if the coke powder cannot be applied to high added value to make coke, the method is a huge economic loss for steel-making enterprises. Therefore, it is necessary to develop a method for producing coke from coke powder and satisfying various quality requirements of coke.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for purifying high-viscosity oil products and co-producing coke.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for purifying high-viscosity oil products and co-producing coke comprises the following steps:
(a) filtering the high-viscosity oil product by using the filler at a working temperature to obtain a clear liquid and filler mixture; the working temperature is 50-200 ℃, and the filler is a granular material with carbon content more than or equal to 30%;
(b) heating the clear liquid to 100-350 ℃ for membrane separation to obtain a purified oil product and a concentrated solution; the filtration precision of the membrane is 20-500 nm;
(c) and carbonizing the filler mixture, or carbonizing the filler mixture after mixing the filler mixture with the concentrated solution to obtain the coke block.
Preferably, in step (a), the filtration is carried out in a fixed bed filter, the packing being disposed within the fixed bed filter.
Further, in the step (a), the particle size of the filler is 0.2-20 mm.
Optimally, in the step (b), the membrane separation adopts a composite membrane with a ceramic membrane layer.
Optimally, in the step (c), the temperature of the carbonization treatment is 400-800 ℃ and the time is 10-30 h.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the method for purifying the high-viscosity oil product and co-producing the coke, the high-viscosity oil product is filtered by adopting the specific filler, the usable purified oil product is obtained after membrane separation, and the filler mixture or the concentrated solution is carbonized to obtain the high-quality coke block, so that double functions of oil product purification and coke production are realized, waste is changed into valuable, and the product benefit is greatly improved.
Detailed Description
The invention relates to a method for purifying high-viscosity oil and co-producing coke, which comprises the following steps: (a) filtering the high-viscosity oil product by using the filler at a working temperature to obtain a clear liquid and filler mixture; the working temperature is 50-200 ℃, and the filler is a granular material with carbon content more than or equal to 30%; (b) heating the clear liquid to 100-350 ℃ for membrane separation to obtain a purified oil product and a concentrated solution; the filtration precision of the membrane is 20-500 nm; (c) and carbonizing the filler mixture, or carbonizing the filler mixture after mixing the filler mixture with the concentrated solution to obtain the coke block. The high-viscosity oil product is filtered by adopting the specific filler, the usable purified oil product is obtained after membrane separation, and the filler mixture or the concentrated solution is carbonized to obtain the high-quality coke block, so that the dual functions of oil product purification and coke production are realized, waste is changed into wealth, and the product benefit is greatly improved. In step (a), the filtration is carried out in a fixed bed filter, the packing being disposed within the fixed bed filter; the filler particle size is preferably 0.2-20 mm, such as the coal powder with the particle size of 0.2-20 mm, so that the industrial waste can be utilized, the enterprise benefit can be improved, and the harm to the environment is avoided. In the step (b), the membrane separation adopts a composite membrane with a ceramic membrane layer; the filter membrane can be a membrane which is commercially available and meets the filter precision, and can also be a membrane with a specific structure on the basis, for example, the ceramic metal composite membrane comprises a porous ceramic tube, a porous metal tube sleeved outside the porous ceramic tube and two porous metal layers which are respectively arranged at two ends of the porous ceramic tube and positioned between the porous ceramic tube and the porous metal tube, wherein at least one layer meets the filter precision, the mechanical strength of the ceramic composite membrane can be improved, and the application problem of the ceramic material in severe systems with high temperature, high pressure, high viscosity and the like is solved. In the step (c), the temperature of the carbonization treatment is 400-800 ℃ and the time is 10-30 h, so as to further ensure the carbonization quality of the coke block.
The following detailed description of preferred embodiments of the invention will be made.
Example 1
The embodiment provides a method for purifying high-viscosity oil and co-producing coke, which comprises the following steps:
(a) at the working temperature of 50 ℃, filtering the high-viscosity oil product by using a fixed bed filter (which contains filler and coal powder with the particle size of 0.2 mm) to obtain a clear liquid and filler mixture;
(b) heating the clear liquid to 100 ℃ for membrane separation (the filtration precision of the membrane is 20nm) to obtain purified oil and concentrated solution;
(c) and mixing the filler mixture with the concentrated solution, and carbonizing at 400 ℃ for 30 hours to obtain the coke block.
Example 2
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure of example 1, except that: in step (a), the working temperature is 100 ℃.
Example 3
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in step (a), the working temperature is 150 ℃.
Example 4
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in step (a), the working temperature is 200 ℃.
Example 5
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure of example 1, except that: in the step (a), the filler is coal powder with the particle size of 1 mm.
Example 6
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in the step (a), the filler is coal powder with the particle size of 5 mm.
Example 7
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in the step (a), the filler is coal powder with the particle size of 20 mm.
Example 8
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in step (b), the clear solution was warmed to 200 ℃.
Example 9
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in step (b), the clear solution is warmed to 350 ℃.
Example 10
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in step (b), the filtration precision of the membrane is 100 nm.
Example 11
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure of example 1, except that: in step (b), the filtration precision of the membrane was 500 nm.
Example 12
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in the step (c), carbonizing at 800 ℃ for 10h to obtain a coke block.
Example 13
This example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in the step (b), carbonizing at 600 ℃ for 20h to obtain a coke block.
Comparative example 1
This comparative example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure in example 1, except that: in step (a), the working temperature is up to 250 ℃.
Comparative example 2
This comparative example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure in example 1, except that: in the step (a), the working temperature is only 30 ℃, and the viscosity of oil products is too high to filter.
Comparative example 3
This comparative example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure in example 1, except that: in the step (b), the temperature of the clear liquid is only raised to 80 ℃, and the viscosity of the oil product is too high to be filtered.
Comparative example 4
This comparative example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the steps in example 1, except that: in step (b), the clear solution is only warmed up to 370 ℃.
Comparative example 5
This comparative example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure in example 1, except that: in step (c), the carbonization temperature is as high as 900 ℃.
Comparative example 6
This comparative example provides a method for purifying high viscosity oil and co-producing coke, which is substantially the same as the procedure in example 1, except that: in the step (c), the carbonization temperature is only 380 ℃, and the carbonization cannot be effectively carried out.
The coke blocks obtained in examples 1 to 13 and comparative examples 1 to 6 were tested and their properties are shown in Table 1.
TABLE 1 Properties of the products in examples 1 to 13 and comparative examples 1 to 6
The products (coke blocks) obtained in examples 1 to 13 and comparative examples 1 to 6 are shown in Table 1. Coke strength is generally expressed in terms of two indicators, crushing strength and attrition strength: crush strength refers to the ability of the coke to resist external impact forces without breaking along cracks or defects in the structure, as expressed by the value M40; abrasion resistance refers to the ability of coke to resist external friction without producing surface glass forming chips or fines, as expressed by the value M10; the method of the drum test of the Tribute rice is adopted for determination, the test is used, the sieve with the aperture of 40mm and the sieve with the aperture of 10mm are used for sieving, and the percentage of the size fraction larger than 40mm is the value M40; the percentage of fractions smaller than 10mm is the value M10.
The above-mentioned embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (3)
1. A method for purifying high-viscosity oil products and co-producing coke is characterized by comprising the following steps:
(a) filtering the high-viscosity oil product by using the filler at a working temperature to obtain a clear liquid and filler mixture; the working temperature is 50-200 ℃, the filler is a particle material with the carbon content being more than or equal to 30%, the filler is pulverized coal, and the particle size of the pulverized coal is 0.2-20 mm;
(b) heating the clear liquid to 100-350 ℃ for membrane separation to obtain a purified oil product and a concentrated solution; the filtration precision of the membrane is 20-500 nm;
(c) mixing the filler mixture with the concentrated solution, and then carrying out carbonization treatment to obtain a coke block; the carbonization treatment temperature is 400-800 ℃, and the time is 10-30 h; the coke slab satisfies the following properties: m40 is more than or equal to 86.3 percent, CRI is less than or equal to 24.4 percent, and CSR is more than or equal to 67.3 percent.
2. The method of claim 1 for purifying high viscosity oil and co-producing coke, wherein the method comprises the following steps: in step (a), the filtration is performed in a fixed bed filter, and the packing is disposed within the fixed bed filter.
3. The method for purifying high-viscosity oil and co-producing coke according to claim 1, wherein the method comprises the following steps: in the step (b), the membrane separation adopts a composite membrane with a ceramic membrane layer.
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| CN113773868B true CN113773868B (en) | 2022-06-24 |
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| CN101280241A (en) * | 2008-05-22 | 2008-10-08 | 南京工业大学 | Method for purifying waste lubricant oil |
| CN103923735A (en) * | 2014-05-04 | 2014-07-16 | 天津理工大学 | Method for regenerating engine oil by using biomass wastes |
| CN104845649A (en) * | 2014-02-14 | 2015-08-19 | 宝山钢铁股份有限公司 | Method using coke powder and tar slag for substitution of part of coal for production of coke |
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| SG173933A1 (en) * | 2010-02-26 | 2011-09-29 | San Technology Holding Pte Ltd | Method and system for purifying used oil |
| CN103509571B (en) * | 2013-09-13 | 2016-03-09 | 陕西煤业化工集团神木天元化工有限公司 | A kind of fine coal carbonization and delayed coking combination sub-prime utilize technology |
| US20170137717A1 (en) * | 2015-11-17 | 2017-05-18 | Kleen Performance Products, Inc. | Composition and method of use of vtae |
| CN109722272A (en) * | 2018-12-17 | 2019-05-07 | 南京悠谷环保科技有限公司 | A kind of solvent purification methods and device |
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Patent Citations (6)
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| CN101280241A (en) * | 2008-05-22 | 2008-10-08 | 南京工业大学 | Method for purifying waste lubricant oil |
| CN104845649A (en) * | 2014-02-14 | 2015-08-19 | 宝山钢铁股份有限公司 | Method using coke powder and tar slag for substitution of part of coal for production of coke |
| CN103923735A (en) * | 2014-05-04 | 2014-07-16 | 天津理工大学 | Method for regenerating engine oil by using biomass wastes |
| CN105087132A (en) * | 2015-08-17 | 2015-11-25 | 蔡淳源 | Engine oil regeneration method, regenerated engine oil and engine oil regeneration device |
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Effective date of registration: 20220118 Address after: 215000 room 210, building 2, Northwest District, Suzhou nano City, No. 99, Jinjihu Avenue, Suzhou Industrial Park, Jiangsu Province Applicant after: Jiangsu Qihe New Material Technology Co.,Ltd. Address before: 215124 room 212, building nw20, Northwest District, nano City, No. 99, Jinjihu Avenue, Suzhou Industrial Park, Jiangsu Province Applicant before: Suzhou Institute of sensing and nanotechnology Nanjing University of Technology |
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