CN113698960B - Production process method of needle coke - Google Patents
Production process method of needle coke Download PDFInfo
- Publication number
- CN113698960B CN113698960B CN202111042145.4A CN202111042145A CN113698960B CN 113698960 B CN113698960 B CN 113698960B CN 202111042145 A CN202111042145 A CN 202111042145A CN 113698960 B CN113698960 B CN 113698960B
- Authority
- CN
- China
- Prior art keywords
- needle coke
- adsorbent
- needle
- grinding
- coke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G57/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one cracking process or refining process and at least one other conversion process
-
- 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
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
- C10B55/02—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material with solid materials
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a production process method of needle coke, which is characterized in that the formed needle coke is subjected to post-treatment, the needle Jiao Zailiu moves and passes through a grinding structure, powdery needle coke is formed under the action of the grinding structure, meanwhile, an adsorbent is added, the adsorbent and the powdery needle coke flow downstream in a mixing mode, and meanwhile, water flow is supplied to the powdery needle coke for flushing, so that the water flow carries away adsorbed impurities. Through the addition of the adsorbent, metal impurities or other types of impurities in the needle coke can be removed, so that the needle coke is subjected to rapid and batch post-treatment, and the quality of the needle coke is controlled. And moreover, the needle coke can be ground, so that the needle coke can be better applied to products in the later period, the grinding step is omitted, the purpose of removing impurities is realized by adding the adsorbent in the grinding step, the two steps are combined into one, and the working efficiency is improved.
Description
Technical Field
The invention relates to a production process method of needle coke.
Background
The needle Jiao Youchen high-quality coke is mainly used as HP and UHP graphite electrodes, lithium batteries and special carbon materials in electric furnace steelmaking. The coke formation mechanism of needle coke basically comprises the following steps: birth growth, encounter fusion, thickening aging and directional solidification.
The most used base material of needle coke is catalytic cracking slurry oil, which can be segmented after pretreatment and heating treatment, and the distillate in the middle segment is collected and forms needle coke.
In order to achieve good quality control, the needle coke generally needs to select good slurry oil for reaction, the fractionation range of the selected needle coke is very narrow, and the requirements on the process are very strict, however, if the needle coke is completely implemented according to the standard, the cost is inevitably greatly increased, and thus the production of the needle coke in large batch is difficult to realize. For the common needle coke process, the formed needle coke material has high content of metal impurities, so that the application of the needle coke material to some occasions is limited; on the other hand, the needle coke is required to be formed into powder material when being used in some occasions, so that the needle coke can be used for specific application, and a process step is required to be added, so that the production cost of an enterprise is increased.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the needle coke which has simple and convenient process steps and can crush the later-stage product and remove impurities to ensure the quality.
The invention provides a production process method of needle coke, which comprises the following steps:
s1: pretreating needle coke raw material slurry oil;
s2: heating needle coke raw material slurry, distilling under the condition of negative pressure to obtain initial stage oil, middle stage oil and heavy stage oil, and introducing the middle stage oil into a needle Jiao Chengxing tank;
s3: forming needle coke in the middle oil in the needle coke forming tank;
s4: and (2) carrying out post-treatment on the formed needle coke, wherein the needle coke passes through a grinding structure under the condition that the needle Jiao Zailiu moves, powdery needle coke is formed under the action of the grinding structure, meanwhile, an adsorbent is added, the adsorbent and the powdery needle coke flow downstream in a mixed mode, and meanwhile, a water flow is supplied to the powdery needle coke for flushing, so that the water flow carries away adsorbed impurities.
The beneficial effect of above-mentioned scheme does: through the addition of the adsorbent, metal impurities or other types of impurities in the needle coke can be removed, so that the needle coke is subjected to rapid and batch post-treatment, and the quality of the needle coke is controlled. And moreover, the needle coke can be ground, so that the needle coke can be better applied to products in the later period, the grinding step is omitted, the purpose of removing impurities is realized by adding the adsorbent in the grinding step, the two steps are combined into one, and the working efficiency is improved.
In a preferred embodiment, the preheating temperature of the needle-shaped Jiao Yuanliao slurry oil in the pretreatment step is 200 ℃ to 250 ℃; and the heating temperature in the heating treatment step in S2 is 330 ℃ to 350 ℃. The material is brought to a preliminary temperature by a pre-treatment step and then subjected to a heating step to form a fractionation and the specific fractions are collected.
In a preferred embodiment, the adsorbent is chitosan adsorbent. Through repeated experiments, the water-soluble chitosan adsorbent can achieve a very good adsorption effect on metal impurities, is water-soluble, can be quickly removed after being mixed with water in a later period, and is simple, convenient and efficient.
In a preferred embodiment, the chitosan adsorbent is carboxymethyl, hydroxyethylation, sulfonation product modified chitosan. The water solubility of the adsorbent modified in the way is further improved, and the adsorbent and metal impurities can be removed in the later period.
According to a preferable scheme, needle coke is added into a feeding hopper, a grinding structure is arranged below the feeding hopper and comprises a driving motor, a gear transmission structure, a rotating rod, a bottom plate and a rotating ball body, the rotating ball body is rotatably arranged in a slotted hole of the bottom plate, the bottom plate is positioned below the feeding hopper, the rotating rod transversely penetrates through the bottom plate and is connected with the rotating ball body, a gap is formed between the rotating ball body and the inner wall of the slotted hole, and the gap is used for blanking the needle coke; the production process method comprises the following steps: through driving motor provides power, gear drive structure transmits power to the rotary rod, the rotary rod then drives the rotary sphere of a plurality of positions and rotates when the rotation, then carries out continuous rotation in the slotted hole when the rotary sphere rotates to grind descending needle coke at this in-process, in order to obtain powdered needle coke.
In a preferred embodiment, in the post-processing step, the slot holes form an elongated channel structure in the vertical direction, and a multi-layer grinding structure is formed in the elongated channel in the vertical direction, and the width of the elongated structure is gradually reduced from top to bottom, and the rotating sphere of the grinding structure is kept constant from top to bottom, so that the gap is gradually reduced; in the steps of the process, the needle coke enters into the elongated channel structure, gradually moves downwards, the general diameter in the process is gradually reduced, and the grinding process of the needle coke is completed by means of the more and more compact and narrower space.
According to a preferable scheme, a buffer groove body is arranged at the lower position of the grinding structure, a spray pipe is arranged on one side of the top of the buffer groove body, the buffer groove body is provided with an upper lifting clamping plate and a lower lifting clamping plate, and a filter mesh is laid on the lower lifting clamping plate; the production process method comprises the following steps: the powdered needle coke after grinding enters into the buffer tank internally, then sprays rivers through the shower in order to soak powder material, makes the adsorbent enter into the aquatic simultaneously, then drags for the powder material in the buffer tank through the centre gripping action of centre gripping upper plate and centre gripping hypoplastron to moisture content and adsorbent filter, and centre gripping upper plate and centre gripping hypoplastron then are transferred to placing the station and carry out the below to powder material and gui ji.
Drawings
FIG. 1 is a schematic structural diagram of a process for producing needle coke.
FIG. 2 is a schematic diagram of the hopper and grinding structure of the needle coke production process.
FIG. 3 is a schematic structural view of an elongated channel structure of a process for producing needle coke.
FIG. 4 is a schematic view of the structure of the buffer tank of the process for producing needle coke.
Detailed Description
The first embodiment:
the invention provides a production process method of needle coke, which comprises the following steps:
s1: pretreating needle coke raw material slurry oil;
s2: heating needle coke raw material slurry, distilling under a negative pressure condition, namely distilling under the negative pressure through a tank body 1 in the figure 1 to obtain initial section oil, middle section oil and heavy section oil, and introducing the middle section oil into a needle coke forming tank 2;
s3: forming needle coke in the middle oil in the needle coke forming tank 2;
s4: and (3) carrying out post-treatment on the formed needle coke, wherein the needle Jiao Zailiu passes through the grinding structure 3 under the action of the grinding structure 3 to form powdery needle coke, meanwhile, an adsorbent is added, the adsorbent and the powdery needle coke flow downstream in a mixed mode, and meanwhile, a water flow is supplied to the powdery needle coke for flushing so that the water flow carries away adsorbed impurities.
The preheating temperature of the needle-shaped Jiao Yuanliao oil slurry in the pretreatment step is 200 ℃ to 250 ℃; and the heating temperature in the heating treatment step in S2 is 330 ℃ to 350 ℃. The adsorbent is chitosan adsorbent. The chitosan adsorbent is carboxymethyl, hydroxyethylation and sulfonated product modified chitosan.
Through the addition of the adsorbent, metal impurities or other types of impurities in the needle coke can be removed, so that the needle coke is subjected to rapid and batch post-treatment, and the quality of the needle coke is controlled. And moreover, the needle coke can be ground, so that the needle coke can be better applied to products in the later period, the grinding step is omitted, the purpose of removing impurities is realized by adding the adsorbent in the grinding step, the two steps are combined into one, and the working efficiency is improved. The material is brought to a preliminary temperature by a pre-treatment step and then subjected to a heating step to form a fractionation and the specific fractions are collected. The water-soluble chitosan adsorbent can have a very good metal impurity adsorption effect, is water-soluble, can be quickly removed after being mixed with water at a later stage, is simple and efficient, and can also adopt other conventional types of adsorbents to adsorb impurities such as metal ions.
Second embodiment:
preferably, as shown in fig. 2, the needle coke of the present embodiment is added into a hopper 10, a grinding structure 3 is disposed below the hopper 10, the grinding structure 3 includes a driving motor 11, a gear transmission structure 12, a rotating rod 13, a bottom plate 14 and a rotating sphere 15, the rotating sphere 15 is rotatably disposed in a slot 16 of the bottom plate 14, the bottom plate 14 is located at a position below the hopper 10, the rotating rod 13 transversely penetrates through the bottom plate 14 to be connected with the rotating sphere 15, a gap 17 is formed between the rotating sphere 15 and the inner wall of the slot 16, and the gap 17 is used for blanking the needle coke; the production process method comprises the following steps: the driving motor 11 provides power, the gear transmission structure 12 transmits the power to the rotating rod 13, the rotating rod 13 drives the rotating balls 15 at multiple positions to rotate when rotating, the rotating balls 15 continuously rotate in the slots 16 when rotating, and the descending needle coke is ground to descend in the process to obtain powdered needle coke.
In a specific application, needle coke in the loading hopper enters the position of the bottom plate 14, a small gap 17 is formed between the rotary sphere 15 and the slotted hole 16 of the bottom plate 14, the needle coke gradually descends from the gap 17, and the needle coke descending in the gap is contacted, extruded and crushed under the rotation action of the rotary sphere 15, the needle Jiao Niansui is gradually powdered, and the descending process of the needle coke is driven. In addition, an adsorbent may be added in the hopper and mixed to perform adsorption of metal impurities for the needle coke.
In the post-processing step, as shown in fig. 3, the slot 16 forms an elongated channel structure 21 in the vertical direction, and a multi-layer grinding structure is formed in the elongated channel structure 21 in the vertical direction, and the width of the elongated structure 21 is gradually reduced from top to bottom, and the rotary sphere 15 of the grinding structure is kept constant from top to bottom, so that the gap 17 is gradually reduced; in the steps of the process, the needle coke enters into the elongated channel structure 21, gradually moves downward, and in the process, the general diameter gradually decreases, and the grinding process for the needle coke is completed by means of the more and more compact and narrowed space. By this arrangement, the gap is gradually narrowed by the elongated passage structure, so that the needle coke is gradually crushed and crushed in the narrowed gap when descending, thereby obtaining a very good powder structure, and the descending speed of the needle coke is increased and the descending speed of the needle coke is also increased.
As shown in fig. 4, a buffer tank 31 is arranged at the lower position of the grinding structure of the embodiment, a spray pipe 32 is arranged at one side of the top of the buffer tank 31, the buffer tank 31 is provided with an upper lifting clamping plate 33 and a lower lifting clamping plate 34, and a filter mesh 35 is laid on the lower lifting clamping plate 34; the production process method comprises the following steps: the powdered needle coke after grinding enters into the buffer tank body 31, then sprays rivers through the shower 32 in order to soak the powder material, makes the adsorbent enter into aqueous simultaneously, then drags for the powder material in the buffer tank body through the centre gripping action of centre gripping upper plate 33 and centre gripping hypoplastron 34 to moisture content and adsorbent filter, and centre gripping upper plate 33 and centre gripping hypoplastron 34 then transfer to placing the station and carry out the below to the powder material and collect. Through the joining of water and the powder needle coke and the adsorbent in the buffer tank body 31 mix, just so through impurity such as water mixed adsorbent and metal, and moisture just can get rid of after filtering, and this time through the clamping effect of upper plate and hypoplastron, then can drag for and get with pressing from both sides solid needle coke sooner, and filter moisture through the filter screen piece 35 of hypoplastron simultaneously, the small opening has also on the hypoplastron, just so realized collecting needle coke fast and filtered moisture's purpose, and can realize serialization operation.
In another scheme, the rotary sphere is a shell structure and consists of two detachable hemispherical shells, and the inside of the shell structure is filled with an adsorbent, the hemispherical shells are provided with material leaking holes, and the rotary sphere gradually leaks the adsorbent inside through the material leaking holes in the rotating process, so that the material scattering function is well and uniformly realized, namely, the rotary sphere is gradually mixed with descending powder needle coke, namely, the rotary sphere is uniformly mixed with the descending powder in a gradual feeding mode under the condition of no stirring and mixing. And the bottom plate forms slot structure in the transverse direction, and rotatory spheroid and rotary rod can follow the separation of extracting in the transverse direction in the plug-in seam structure, and extract the inside supplementary adsorbent material of back casing, or the rotary rod is hollow structure, and the lateral part of rotary rod passes through input catheter and adsorbent pump and go into structural connection, the adsorbent passes through the pipe input to the rotary rod promptly, then enter into inside in order to realize quick, the continuous feeding adsorbent along the rotary rod, and need not to dismantle shell structure again.
Claims (3)
1. A production process method of needle coke is characterized by comprising the following steps:
s1: pretreating needle coke raw material slurry oil;
s2: heating needle coke raw material slurry, distilling under the condition of negative pressure to obtain initial stage oil, middle stage oil and heavy stage oil, and introducing the middle stage oil into a needle Jiao Chengxing tank;
s3: forming needle coke in the middle oil in the needle coke forming tank;
s4: carrying out post-treatment on the formed needle coke, wherein the needle coke passes through a grinding structure under the condition that the needle Jiao Zailiu moves, powder needle coke is formed under the action of the grinding structure, meanwhile, an adsorbent is added, the adsorbent and the powder needle coke flow downstream in a mixed mode, and meanwhile, a water flow is supplied to the powder needle coke for flushing, so that the water flow carries away adsorbed impurities;
the adsorbent is a chitosan adsorbent;
the chitosan adsorbent is carboxymethyl, hydroxyethylation and sulfonated product modified chitosan;
in the post-treatment step, needle coke is added into a feeding hopper, a grinding structure is arranged below the feeding hopper and comprises a driving motor, a gear transmission structure, a rotary rod, a bottom plate and a rotary sphere, the rotary sphere is rotatably arranged in a slotted hole of the bottom plate, the bottom plate is positioned below the feeding hopper, the rotary rod transversely penetrates through the bottom plate and is connected with the rotary sphere, a gap is formed between the rotary sphere and the inner wall of the slotted hole, and the gap is used for blanking the needle coke; the production process method comprises the following steps: the driving motor provides power, the gear transmission structure transmits the power to the rotating rod, the rotating rod drives the rotating spheres at multiple positions to rotate when rotating, the rotating spheres continuously rotate in the slotted holes when rotating, and the descending needle coke is ground downwards in the process to obtain powdery needle coke;
a buffer groove body is arranged at the lower position of the grinding structure, a spray pipe is arranged on one side of the top of the buffer groove body, the buffer groove body is provided with a lifting clamping upper plate and a lifting clamping lower plate, and a filter mesh is laid on the lifting clamping lower plate; the production process method comprises the following steps: the ground powdery needle coke enters a buffer tank body, water flow is sprayed through a spray pipe to soak powdery materials, meanwhile, an adsorbent enters water, the powdery materials in the buffer tank body are fished through clamping actions of an upper clamping plate and a lower clamping plate, moisture and the adsorbent are filtered, and the upper clamping plate and the lower clamping plate are transferred to a placing station to collect the powdery materials below;
the rotary sphere is shell structure, and it comprises two detachable hemisphere casings, and at the inside adsorbent that fills of shell structure, the hourglass material hole has on the hemisphere casing, rotary sphere's pivoted in-process then spills inside adsorbent gradually through the hourglass material hole, just so evenly realize spilling the material function well, carry out the misconvergence with descending powder needle coke gradually promptly, realized the homogeneous mixing with descending powder through this kind of mode of feeding in raw material gradually under the condition that need not stir the mixture promptly.
2. The process for producing needle coke according to claim 1, wherein the preheating temperature of the needle Jiao Yuanliao slurry oil in the pretreatment step is 200 ℃ to 250 ℃; and the heating temperature in the heating treatment step in S2 is 330 ℃ to 350 ℃.
3. The needle coke production process according to claim 1, wherein in the post-treatment step, the slot holes form an elongated channel structure in the vertical direction, and a multi-layer grinding effect is formed in the elongated channel in the vertical direction, and the width of the elongated channel structure is gradually reduced from the top to the bottom, and the structure for grinding is kept constant from the top to the bottom, so that the gap is gradually reduced; in the steps of the process method, the needle coke enters the slender channel structure and gradually moves downwards, the diameter of the channel is gradually reduced in the process, and the grinding process of the needle coke is completed by means of the increasingly compact and narrowed space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042145.4A CN113698960B (en) | 2021-09-07 | 2021-09-07 | Production process method of needle coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042145.4A CN113698960B (en) | 2021-09-07 | 2021-09-07 | Production process method of needle coke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113698960A CN113698960A (en) | 2021-11-26 |
| CN113698960B true CN113698960B (en) | 2022-10-11 |
Family
ID=78660756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111042145.4A Active CN113698960B (en) | 2021-09-07 | 2021-09-07 | Production process method of needle coke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113698960B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641747A (en) * | 2018-05-24 | 2018-10-12 | 白鹰 | A kind for the treatment of process and its system filtering production needle-shape coke raw material oil using catalytic slurry |
| CN109777460A (en) * | 2019-01-30 | 2019-05-21 | 虞定生 | A kind of acicular petroleum coke and its processing technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9777221B2 (en) * | 2006-06-29 | 2017-10-03 | Graftech International Holdings Inc. | Method of producing needle coke for low CTE graphite electrodes |
| US10941346B2 (en) * | 2019-05-27 | 2021-03-09 | Indian Oil Corporation Limited | Process for conversion of fuel grade coke to anode grade coke |
-
2021
- 2021-09-07 CN CN202111042145.4A patent/CN113698960B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641747A (en) * | 2018-05-24 | 2018-10-12 | 白鹰 | A kind for the treatment of process and its system filtering production needle-shape coke raw material oil using catalytic slurry |
| CN109777460A (en) * | 2019-01-30 | 2019-05-21 | 虞定生 | A kind of acicular petroleum coke and its processing technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113698960A (en) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106834672A (en) | High efficiency rare-earth extraction equipment is used in a kind of rare earth processing | |
| CN116334385B (en) | Stabilization equipment for reducing silicon of metallized pellets | |
| CN113698960B (en) | Production process method of needle coke | |
| CN108435092A (en) | A kind of coating material agitator based on Hydrauservo System | |
| CN108342253A (en) | A kind of overcritical oil extracting method | |
| CN207327347U (en) | Plastics-production agitating device | |
| CN115837394A (en) | Solid waste reduction and recovery treatment device and method for mine environment treatment | |
| CN214654740U (en) | A discoloring device that is used for tea-seed oil to be refined to have an automatic material conveying function | |
| CN205966129U (en) | Back focal depth processingequipment is forged to oil | |
| CN114653264A (en) | Coal washing tailing slime water flocculation sedimentation equipment for coal mine | |
| CN212942423U (en) | Preparation mixing arrangement of chinese herbal medicine granule | |
| CN110616317B (en) | Manganese ore reduction equipment and reduction method | |
| CN211537564U (en) | Fertilizer adhesive mixed fertilizer device | |
| CN106390936A (en) | Illite adsorbent as well as preparation method and application thereof | |
| CN108485675B (en) | Soil conditioner production process and equipment thereof | |
| CN108358415B (en) | Ultrasonic-enhanced supercritical petroleum oil sludge extraction equipment | |
| CN116637712A (en) | Method for preparing graphene from tar residues | |
| CN219804283U (en) | Slag dragging equipment for vegetable oil production | |
| CN216827054U (en) | Vertical mixer with filter screen for pellet production | |
| CN113057100B (en) | Formula milk tofu processingequipment turns over from top to bottom | |
| CN115608261B (en) | Preparation device for hydrogenated oil production and application method thereof | |
| CN221051846U (en) | Tumor stem cell separator | |
| CN214076137U (en) | A high-efficient raw materials fuses device for hydrometallurgy | |
| CN212640404U (en) | Pressing assembly of oil tea presser | |
| CN109126233A (en) | A kind of positive electrode twin-stage dispersion filter press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |