CN113145045A - Linear alkylbenzene production equipment and production method thereof - Google Patents
Linear alkylbenzene production equipment and production method thereof Download PDFInfo
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- CN113145045A CN113145045A CN202110155935.7A CN202110155935A CN113145045A CN 113145045 A CN113145045 A CN 113145045A CN 202110155935 A CN202110155935 A CN 202110155935A CN 113145045 A CN113145045 A CN 113145045A
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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Abstract
The invention discloses linear alkylbenzene production equipment and a linear alkylbenzene production method, wherein the linear alkylbenzene production equipment comprises a reaction tank body, the center of an inner cavity of the reaction tank body is rotationally connected with a rotating shaft along the vertical direction, the rotating shaft is in transmission connection with a stirring sheet, the stirring sheet is in a vortex-shaped line shape formed by arranging disks on the outer wall of the rotating shaft and gradually diffuses outwards, and the outer end of the stirring sheet extends towards the inner wall of the reaction tank body in an inclined manner; a plurality of reaction plates are uniformly fixed on the inner side of the stirring sheet along the bending direction of the stirring sheet, two ends of each reaction plate are respectively connected with the stirring sheet, a cavity is formed in each reaction plate, and a solid acid catalyst layer is filled in each cavity; this stirring piece establishes the dish and becomes the vortex form line shape, is provided with the reaction plate on the stirring piece, rotates the in-process at the stirring piece, and the internal liquid of retort is gradually with the abundant contact reaction of the liquid in the reaction plate step by step, compares with traditional equipment, and it has improved reaction efficiency greatly, has improved raw materials utilization ratio to the operation degree of difficulty has been reduced, and manufacturing cost.
Description
Technical Field
The invention relates to the field of linear alkylbenzene preparation, in particular to linear alkylbenzene production equipment and a linear alkylbenzene production method.
Background
The alkylbenzene is colorless or yellowish transparent liquid without suspended matters, the refractive index (n 20D) is 1.4800-1.4900, the relative density is 0.8500-0.8700, the average molecular weight is 220-270, and the Engler distillation range is 265-350 ℃. It has stable chemical properties. Flash point above 100 ℃; is easy to generate alkyl benzene sulfonic acid by sulfonation reaction with fuming sulfuric acid or SO 3. Is the most main raw material of domestic detergent products for civil use. Various civil detergents produced by industrial linear alkylbenzene have the characteristics of strong detergency, good sterilization effect, no residue and no pollution.
At present, the solid acid process which is industrially applied and is mature is a digital alkylation process. In the digital process, olefin and benzene are mixed and flow through a fixed bed reactor containing a solid acid catalyst, the whole reaction is carried out in a liquid phase, and a reactant flow is directly sent to a fractionation part; however, the traditional fixed bed reactor is designed to be fixedly installed, the contact rate of the traditional fixed bed reactor is not high when the traditional fixed bed reactor reacts with the mixed solution of olefin and benzene, and the reaction is not sufficient; meanwhile, the raw materials are difficult to mix and stir in the reaction process, and a part of the raw materials do not participate in the reaction, thereby causing certain waste.
Therefore, how to solve the defects of the prior art is a subject of the present invention.
Disclosure of Invention
In order to solve the problems, the invention discloses linear alkylbenzene production equipment and a linear alkylbenzene production method.
In order to achieve the above purpose, the invention provides the following technical scheme: a linear alkylbenzene production device comprises a reaction tank body, wherein the center of an inner cavity of the reaction tank body is rotatably connected with a rotating shaft along the vertical direction, the rotating shaft is in transmission connection with a stirring sheet, the stirring sheet is formed by forming a disc on the outer wall of the rotating shaft into a vortex-shaped line shape and gradually diffuses outwards, and the outer end of the stirring sheet extends towards the inner wall of the reaction tank body in an inclined manner;
a plurality of reaction plates are uniformly fixed on the inner side of the stirring sheet along the bending direction of the stirring sheet, two ends of each reaction plate are respectively connected with the stirring sheet, a cavity is formed in each reaction plate, and a solid acid catalyst layer is filled in each cavity; a plurality of through holes are formed in the reaction plate corresponding to the front side wall and the rear side wall of the solid acid catalyst layer, the liquid passing rate of the reaction plate is gradually reduced from the center of the rotating shaft reaction tank body to the outside, and a liquid driving plate is fixed at one end, close to the inner wall of the reaction tank body, of the stirring sheet;
one end of the liquid driving plate is connected with the stirring sheet, a gap is reserved between the other end of the liquid driving plate and the inner wall of the reaction tank body, the liquid driving plate extends towards the reaction plate in an inclined mode, the bottom of the stirring sheet is connected with a rotary table, the rotary table is matched with the reaction tank body in a sliding and sealing mode, and a cavity is formed among the rotary table, the inner wall of the reaction tank body and the stirring sheet;
the side part of the reaction tank body is connected with a liquid inlet pipe, the bottom of the reaction tank body is connected with a liquid outlet pipe, the liquid outlet pipe and the liquid inlet pipe are both communicated with the cavity, and the liquid outlet pipe is arranged near the middle of the bottom of the reaction tank body;
the top end of the rotating shaft is driven by a motor to rotate.
In the scheme, a plurality of partition plates are arranged in the cavity of the reaction plate along the length direction of the cavity, the cavity is divided into a plurality of placing cavities by the partition plates, and the placing cavities are filled with solid acid catalyst layers.
In the scheme, the turntable and the stirring sheet are both of double-layer hollow structures.
In the above scheme, the stirring sheet is provided with slots corresponding to the two ends of the reaction plate, and the stirring sheet is detachably inserted into the slots.
A process for the production of linear alkylbenzenes comprising the steps of:
the method comprises the following steps: after mixing olefin and benzene, conveying the mixture into a cavity through a liquid inlet pipe of the linear alkylbenzene production equipment by a conveying pump;
step two: starting a motor, driving the stirring sheet to rotate through the motor, wherein the rotating direction is the same as the inclined direction of the liquid driving plate, the intermittent motion of speed reduction is carried out after the acceleration rotation, and the gap interval is-second;
step three: and (5) after the stirring sheet in the second step runs for-h, opening a liquid discharge pipe, conveying the liquid after reaction to a fractionating device through the liquid discharge pipe, and treating to obtain a linear alkylbenzene product.
In the scheme, in the second step, the stirring sheet rotates for-minutes in the process of-reverse rotation.
Compared with the prior art, the invention has the following advantages: the production equipment has the advantages that the stirring sheet is arranged in the reaction tank body, the stirring sheet is provided with the disc in a vortex line shape, the reaction plate is arranged on the stirring sheet, and liquid in the reaction tank body gradually and gradually contacts and reacts with the liquid in the reaction plate fully in the rotating process of the stirring sheet.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of a reaction tank;
FIG. 3 is a top view of a reaction tank;
FIG. 4 is a schematic view of a reaction plate structure;
FIG. 5 is a schematic view of the internal structure of the reaction plate;
FIG. 6 is a sectional view of the reaction tank body.
List of reference numerals: 100 reaction tank bodies, 101 rotating shafts, 102 stirring plates, 103 reaction plates, 104 through holes, 105 liquid driving plates, 106 rotating discs, 107 cavities, 108 liquid inlet pipes, 109 liquid outlet pipes and 110 motors.
Detailed Description
The present invention will be further illustrated below with reference to specific embodiments, which are to be understood as merely illustrative and not limitative of the scope of the present invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b): referring to fig. 1 to 6, a linear alkylbenzene production apparatus comprises a reaction tank 100, wherein a rotating shaft 101 is rotatably connected to the center of an inner cavity of the reaction tank 100 along a vertical direction, a stirring blade 102 is rotatably connected to the rotating shaft 101, the stirring blade 102 is coiled around the rotating shaft 101 into a vortex-shaped line shape and gradually diffuses outwards, and the outer end of the stirring blade 102 extends obliquely towards the inner wall of the reaction tank 100; the top of the reaction tank body 100 is provided with an end cover, the bottom end of the rotating shaft 101 is arranged on the bottom surface of the inner cavity of the reaction tank body 100 through a bearing, and the top end of the rotating shaft 101 penetrates through the end cover outwards and extends out of the reaction tank body 100;
a plurality of reaction plates 103 are uniformly fixed on the inner side of the stirring sheet 102 along the bending direction, two ends of each reaction plate 103 are detachably connected with the stirring sheet 102 respectively, a cavity is formed in each reaction plate 103, and a solid acid catalyst layer is filled in each cavity; a plurality of through holes 104 are formed in the reaction plate 103 corresponding to the front side wall and the rear side wall of the solid acid catalyst layer, the liquid passing rate of the reaction plate 103 is gradually reduced from the center of the reaction tank body 100 to the outside, and the liquid passing rate can be realized by gradually reducing the diameter of the through holes 104 in the reaction plate 103;
a liquid driving plate 105 is fixed at one end of the stirring sheet 102 close to the inner wall of the reaction tank body 100; when the stirring plate 102 rotates, the liquid driving plate 105 is driven to synchronously rotate, and the mixed liquid of olefin and benzene introduced into the reaction tank body 100 is pushed to the reaction plate 103 through the liquid driving plate 105;
one end of the liquid driving plate 105 is connected with the stirring sheet 102, a gap is reserved between the other end of the liquid driving plate 105 and the inner wall of the reaction tank body 100, the liquid driving plate extends towards the reaction plate 103 in an inclined mode, the bottom of the stirring sheet 102 is connected with a rotating disc 106, the rotating disc 106 is in sliding sealing fit with the reaction tank body 100, and a cavity 107 is formed among the rotating disc 106, the inner wall of the reaction tank body 100 and the stirring sheet 102;
the side part of the reaction tank body 100 is connected with a liquid inlet pipe 108, the bottom of the reaction tank body 100 is connected with a liquid outlet pipe 109, the liquid outlet pipe 109 and the liquid inlet pipe 108 are both communicated with the cavity 107, and the liquid outlet pipe 109 is arranged near the middle of the bottom of the reaction tank body 100;
the top end of the rotating shaft 101 is driven to rotate by a motor 110;
a plurality of partition plates are arranged in the cavity of the reaction plate 103 along the length direction of the cavity, the cavity is divided into a plurality of placing cavities by the plurality of partition plates, and solid acid catalyst layers are filled in the placing cavities;
in order to further reduce the overall weight of the rotating disk 106 and the stirring plate 102, the rotating disk 106 and the stirring plate 102 are both double-layer hollow structures, and the hollow structures have certain buoyancy in liquid so as to facilitate the rotation of the hollow structures.
The stirring sheet 102 has slots corresponding to the reaction plate 103 at its two ends, and the stirring sheet 102 is detachably inserted into the slots for easy disassembly and maintenance.
The method for producing the linear alkylbenzene comprises the following steps:
the method comprises the following steps: after mixing olefin and benzene, conveying the mixture into a cavity 107 through a liquid inlet pipe 108 of the linear alkylbenzene production equipment by a conveying pump;
step two: starting the motor 110, driving the stirring sheet 102 to rotate through the motor 110, wherein the rotating direction is the same as the inclined direction of the liquid driving plate 105, and performing intermittent motion of accelerating rotation and decelerating, wherein the interval of the gap is 2-3 seconds;
step three: and (3) after the stirring sheet 102 in the second step runs for 1-2h, opening a liquid discharge pipe 109, conveying the reacted liquid to a fractionating device through the liquid discharge pipe 109, and treating to obtain a linear alkylbenzene product.
And in the second step, the stirring sheet 102 also performs reverse rotation for 5-8 times in the rotating process, and the reverse rotation time is 5-10 minutes.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (6)
1. A linear alkyl benzene production facility which characterized in that: the reaction tank comprises a reaction tank body (100), wherein a rotating shaft (101) is rotatably connected to the center of an inner cavity of the reaction tank body (100) along the vertical direction, a stirring sheet (102) is connected to the rotating shaft (101) in a transmission manner, the stirring sheet (102) is coiled around the rotating shaft (101) into a vortex-shaped line shape and gradually diffuses outwards, and the outer end of the stirring sheet (102) obliquely extends towards the inner wall of the reaction tank body (100);
a plurality of reaction plates (103) are uniformly fixed on the inner side of the stirring sheet (102) along the bending direction of the stirring sheet, two ends of each reaction plate (103) are respectively connected with the stirring sheet (102), a cavity is formed in each reaction plate (103), and a solid acid catalyst layer is filled in each cavity; a plurality of through holes (104) are formed in the reaction plate (103) corresponding to the front side wall and the rear side wall of the solid acid catalyst layer, the liquid passing rate of the reaction plate (103) is gradually reduced from the center of the reaction tank body (100) to the outside, and a liquid driving plate (105) is fixed at one end, close to the inner wall of the reaction tank body (100), of the stirring sheet (102);
one end of the liquid driving plate (105) is connected with the stirring sheet (102), a gap is reserved between the other end of the liquid driving plate and the inner wall of the reaction tank body (100), the liquid driving plate extends towards the reaction plate (103) in an inclined mode, the bottom of the stirring sheet (102) is connected with a rotating disc (106), the rotating disc (106) is in sliding sealing fit with the reaction tank body (100), and a cavity (107) is formed among the rotating disc (106), the inner wall of the reaction tank body (100) and the stirring sheet (102);
the lateral part of the reaction tank body (100) is connected with a liquid inlet pipe (108), the bottom of the reaction tank body (100) is connected with a liquid outlet pipe (109), the liquid outlet pipe (109) and the liquid inlet pipe (108) are both communicated with the cavity (107), and the liquid outlet pipe (109) is arranged near the middle of the bottom of the reaction tank body (100);
the top end of the rotating shaft (101) is driven to rotate by a motor (110).
2. A linear alkylbenzene production apparatus as claimed in claim 1 wherein: a plurality of partition plates are arranged in the cavity of the reaction plate (103) along the length direction of the cavity, the cavity is divided into a plurality of placing cavities by the partition plates, and the placing cavities are filled with solid acid catalyst layers.
3. A linear alkylbenzene production apparatus as claimed in claim 1 wherein: the rotating disc (106) and the stirring sheet (102) are both of a double-layer hollow structure.
4. A linear alkylbenzene production apparatus as claimed in claim 1 wherein: the stirring sheet (102) is provided with slots corresponding to the two ends of the reaction plate (103), and the stirring sheet (102) is detachably inserted into the slots.
5. A method for producing linear alkylbenzene is characterized in that: the method comprises the following steps:
the method comprises the following steps: after mixing olefin and benzene, conveying the mixture into a cavity (107) through a liquid inlet pipe (108) of the linear alkylbenzene production equipment by a conveying pump;
step two: starting a motor (110), driving a stirring sheet (102) to rotate through the motor (110), wherein the rotating direction is the same as the inclined direction of a liquid driving plate (105), the stirring sheet performs intermittent motion of accelerating rotation and then decelerating, and the interval of gaps is 2-3 seconds;
step three: and (3) after the stirring sheet (102) in the second step is operated for 1-2h, opening a liquid discharge pipe (109), conveying the liquid after reaction to a fractionating device through the liquid discharge pipe (109), and treating to obtain a linear alkylbenzene product.
6. A process for the production of linear alkylbenzenes according to claim 5, characterized in that: and in the second step, the stirring sheet (102) also rotates reversely for 5-8 times in the rotating process, and the reverse rotation time is 5-10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110155935.7A CN113145045B (en) | 2021-02-04 | 2021-02-04 | Linear alkyl benzene production facility |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110155935.7A CN113145045B (en) | 2021-02-04 | 2021-02-04 | Linear alkyl benzene production facility |
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| CN113145045A true CN113145045A (en) | 2021-07-23 |
| CN113145045B CN113145045B (en) | 2022-09-23 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101365664A (en) * | 2005-12-21 | 2009-02-11 | 切夫里昂奥罗尼特有限责任公司 | A method of making an alkylated aromatic using acidic ionic liquid catalyst |
| CN103866671A (en) * | 2014-03-20 | 2014-06-18 | 河南高远公路养护设备股份有限公司 | Pitch heating box of asphalt pavement regeneration comprehensive repairing vehicle |
| CN105536610A (en) * | 2016-01-26 | 2016-05-04 | 安徽理工大学 | Multi-impeller mixed flow field ore pulp preprocessor based on ore pulp pipeline pressure drive |
| CN208082476U (en) * | 2018-03-15 | 2018-11-13 | 江西奥德邦科技有限公司 | A kind of mashing refining kettle of p-phenoxyphenol crude product |
| CN208260575U (en) * | 2018-02-28 | 2018-12-21 | 天津瑞鹏医疗器械有限公司 | Pump circulation stirring system |
| CN109354357A (en) * | 2018-12-17 | 2019-02-19 | 东北大学 | The compensation aeration of one kind exempts from turning aerobic fermentation device |
| CN109758941A (en) * | 2019-02-27 | 2019-05-17 | 蔡桂平 | A kind of comprehensive blender and stirring means |
| CN210279024U (en) * | 2019-06-03 | 2020-04-10 | 贵州石博士科技有限公司 | A agitating unit for polycarboxylate water reducing agent |
| CN111848500A (en) * | 2020-08-11 | 2020-10-30 | 李来旺 | Method for synthesizing 2-vinylpyridine |
| CN211800781U (en) * | 2019-12-24 | 2020-10-30 | 中信大锰矿业有限责任公司 | Reaction kettle of spiral net cover type stirrer |
| CN212385747U (en) * | 2020-04-13 | 2021-01-22 | 刘文杰 | Stirrer for rubber production |
-
2021
- 2021-02-04 CN CN202110155935.7A patent/CN113145045B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101365664A (en) * | 2005-12-21 | 2009-02-11 | 切夫里昂奥罗尼特有限责任公司 | A method of making an alkylated aromatic using acidic ionic liquid catalyst |
| CN103866671A (en) * | 2014-03-20 | 2014-06-18 | 河南高远公路养护设备股份有限公司 | Pitch heating box of asphalt pavement regeneration comprehensive repairing vehicle |
| CN105536610A (en) * | 2016-01-26 | 2016-05-04 | 安徽理工大学 | Multi-impeller mixed flow field ore pulp preprocessor based on ore pulp pipeline pressure drive |
| CN208260575U (en) * | 2018-02-28 | 2018-12-21 | 天津瑞鹏医疗器械有限公司 | Pump circulation stirring system |
| CN208082476U (en) * | 2018-03-15 | 2018-11-13 | 江西奥德邦科技有限公司 | A kind of mashing refining kettle of p-phenoxyphenol crude product |
| CN109354357A (en) * | 2018-12-17 | 2019-02-19 | 东北大学 | The compensation aeration of one kind exempts from turning aerobic fermentation device |
| CN109758941A (en) * | 2019-02-27 | 2019-05-17 | 蔡桂平 | A kind of comprehensive blender and stirring means |
| CN210279024U (en) * | 2019-06-03 | 2020-04-10 | 贵州石博士科技有限公司 | A agitating unit for polycarboxylate water reducing agent |
| CN211800781U (en) * | 2019-12-24 | 2020-10-30 | 中信大锰矿业有限责任公司 | Reaction kettle of spiral net cover type stirrer |
| CN212385747U (en) * | 2020-04-13 | 2021-01-22 | 刘文杰 | Stirrer for rubber production |
| CN111848500A (en) * | 2020-08-11 | 2020-10-30 | 李来旺 | Method for synthesizing 2-vinylpyridine |
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