CN111282392A - Isophthalodinitrile dry-method trapping device and trapping method - Google Patents
Isophthalodinitrile dry-method trapping device and trapping method Download PDFInfo
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- CN111282392A CN111282392A CN202010206664.9A CN202010206664A CN111282392A CN 111282392 A CN111282392 A CN 111282392A CN 202010206664 A CN202010206664 A CN 202010206664A CN 111282392 A CN111282392 A CN 111282392A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
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- C07C253/34—Separation; Purification
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Abstract
The invention provides an isophthalonitrile dry-method trapping device, which adopts a trapping device main body consisting of two groups of inverted isosceles trapezoid surfaces and rectangular surfaces which are symmetrically arranged, can avoid dead corners to the maximum extent and reduce side inclination angles to the maximum extent, ensures that solid products are scattered on a wall surface and smoothly slide off, and further improves the dry-method trapping efficiency; the dry-method trapping method using the device not only can realize continuous closed production, but also reduces the escape of the isophthalonitrile tail gas and greatly improves the field production environment.
Description
Technical Field
The invention relates to the technical field of synthesis gas separation treatment, in particular to an isophthalonitrile dry-method trapping device and method.
Background
Isophthalonitrile (IPN) is an important organic raw material for organic synthesis, and tetrachloroisophthalonitrile synthesized by chlorination is a high-efficiency and low-toxicity bactericide; the m-xylylenediamine prepared by hydrogenation is an epoxy resin curing agent with excellent performance, and is also a raw material of polyurethane vinegar resin and nylon resin, wherein the m-xylylenediamine is mainly used for synthesizing chlorothalonil, the chlorothalonil is a high-efficiency low-degree broad-spectrum bactericide, is mainly used for preventing crops from being infected by fungi, and is also used as a protective agent of an industrial mildew preventive, a fruit preservative, a coating and a binder.
Because the separation and purification process of the isophthalonitrile synthesis gas in the production process is relatively complex, the domestic isophthalonitrile production device mainly comprises dry-method trapping and wet-method trapping at present. However, the problems of low dry-method trapping efficiency, serious inner wall binder and frequent start and stop of the device exist in the dry-method trapping; the series problems of large waste water trapping amount, difficult treatment, difficult separation and the like in the wet method seriously affect the production efficiency and the product quality and have the problems of safety and environmental protection.
CN205586600U discloses an improved isophthalonitrile thin-wall trap, but the device cavity link plate receives the vibrational force of bulkhead vibrator less, under the effect of this vibrational force and gravity, the solid-state isophthalonitrile of desublimation on the link plate wall can not in time drop completely to the trap awl end, thereby can appear gathering gradually and block up the passageway that gaseous isophthalonitrile got into, finally make the hollow link plate wall totally by desublimation become solid-state isophthalonitrile parcel outward, lose the function of further cooling entrapment gaseous isophthalonitrile, make the whole entrapment yield greatly reduced of trap, phthalonitrile residual rate is high in the middle of the tail gas.
CN201384868Y discloses an isophthalonitrile water-spraying absorption-capture system, but the capture system has a relatively complex structure, requires a plurality of devices to be used in cooperation with each other, and requires a plurality of absorption towers to complete the capture of isophthalonitrile.
CN101955447B discloses a solvent trapping method, which requires the addition of extra organic solvent, and the energy consumption of two-stage rectification is high.
In the current practical production, the most dry traps are adopted, and the structural design of the traps is particularly critical. Therefore, in order to overcome the problem of low trapping efficiency of the conventional dry trap, it is necessary to develop a new dry trap structure.
Disclosure of Invention
In view of the problems in the prior art, the invention provides an isophthalonitrile dry-method trapping device, which can avoid dead corners to the maximum extent and reduce side inclination angles to the maximum extent by improving two surfaces of a trap main body into inverted isosceles trapezoid surfaces, so that solid products are ensured to be scattered on wall surfaces and smoothly slide off, and the dry-method trapping efficiency is improved; the dry-method trapping method using the device not only can realize continuous closed production, but also reduces the escape of the isophthalonitrile tail gas and greatly improves the field production environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an isophthalonitrile dry-method trapping device, which comprises a trap main body, wherein four sides of the trap main body are formed by two groups of opposite surfaces, the first group of opposite surfaces are symmetrically arranged inverted isosceles trapezoid surfaces, and the second group of opposite surfaces are rectangular surfaces.
The dry-method trapping device provided by the invention can improve the trapping rate of the isophthalonitrile solid powder by combining two groups of opposite inverted isosceles trapezoid surfaces and rectangular surfaces. The inverted isosceles trapezoid surface has a certain inclination angle, so that solid products can be ensured to be scattered on the wall surface and smoothly slide off, meanwhile, the connecting part of the upper structure and the lower tetrahedral cone structure in the prior art is not needed, and dead angles can be avoided to the maximum extent; meanwhile, the other two surfaces still adopt rectangular surfaces, so that the volume of the trap can be ensured, the phenomenon of material sticking is reduced, and the production yield requirement is better met.
The design of the manhole, the pressure measuring port and the temperature measuring port of the trapping device is not particularly limited, and any manhole design and pressure measuring port and temperature measuring port design which are convenient for construction and maintenance and are well known to a person skilled in the art can be adopted.
Preferably, the inclination angle of the inverted isosceles trapezoid surface in the trap body is 60-85 degrees, for example, 60 degrees, 61 degrees, 62 degrees, 63 degrees, 64 degrees, 65 degrees, 66 degrees, 67 degrees, 68 degrees, 69 degrees, 70 degrees, 71 degrees, 72 degrees, 73 degrees, 74 degrees, 75 degrees, 76 degrees, 77 degrees, 78 degrees, 79 degrees, 80 degrees, 81 degrees, 82 degrees, 83 degrees, 84 degrees or 85 degrees, preferably 78-82 degrees.
The inclination angle of the inverted isosceles trapezoid surface refers to an included angle towards the outside of the catcher main body in the included angle between the inverted isosceles trapezoid surface and the ground, namely an angle formed by the inverted isosceles trapezoid surface and a central axis which are complementary.
The inclination angle of the inverted isosceles trapezoid surface in the catcher main body provided by the invention is 60-85 degrees, so that the inclination angle of the inverted isosceles trapezoid surface is greater than the repose angle of isophthalonitrile, and the possibility that isophthalonitrile powder adheres to the inner wall is reduced to the greatest extent.
Preferably, the inner walls of the catcher main body are polished.
The invention ensures the smoothness of the catcher main body by polishing the inner wall of the catcher main body and reduces the wall sticking phenomenon of the m-phthalonitrile.
Preferably, a scraper is arranged inside the catcher body.
According to the invention, the scraper is arranged in the catcher main body, so that the material can be automatically scraped up and down, the self-cleaning of the inside of the catcher can be realized, and the state that the inside of the catcher is hardly adhered with the material can be realized.
The doctor blade is not limited in the present invention, and any doctor blade known to those skilled in the art that can be used for an isophthalonitrile trap may be used, and a doctor blade improved in the prior art may also be used.
Preferably, the scraper is connected to an external motor.
Preferably, the scraper is connected with the motor through a steel wire rope.
Preferably, a sealing device is arranged at the contact part of the steel wire rope and the catcher main body.
The form of the sealing means is not limited by the present invention, and any sealing means known to those skilled in the art that can be used for sealing may be used, for example, a packing sealing means or a gasket sealing means, etc.
Since a nitrogen-protected sealing environment is required for capturing isophthalonitrile, it is necessary to seal a wire rope connected to an external motor.
Preferably, the form of the sealing means comprises any one of a packing seal, a shim seal, an O-ring seal, a screw seal, an oil seal, a labyrinth seal, a screw seal, a power seal or a mechanical seal, preferably a packing seal.
Preferably, a partition is provided inside the trap body.
The trap body of the invention adopts a double-pass design, thereby maximally increasing the gas-phase retention time and ensuring the trapping efficiency.
Preferably, the trap body is externally provided with a jacket.
Preferably, the jacket is a segmented jacket.
The trap jacket is designed into a sectional type, so that the strength of the equipment is increased to the maximum extent, and the requirement of cooling the trap is met.
Preferably, the jacket is filled with a heat exchange medium.
Preferably, the heat exchange medium comprises water or steam.
Preferably, a baffle is arranged inside the jacket.
Preferably, the baffle is provided with a forced baffling channel.
The baffle plate is designed into the baffle plate with the forced baffling channel, so that the strength of the equipment is increased to a certain extent, and the uniformity of the internal temperature of the catcher is ensured.
Preferably, the bottom of the catcher body is provided with a powder outlet.
Preferably, vibration pads are arranged on two sides of the inverted isosceles trapezoid of the catcher main body, close to the powder outlet.
Preferably, the vibration pad is an air-jet vibration pad.
The trap is provided with a plurality of double-layer air injection vibration pads close to the powder outlet, so that the bridging phenomenon at the outlet can be avoided.
Preferably, a bottom discharging device is arranged at the powder outlet.
Preferably, the bottom discharge device is a discharge screw device.
According to the invention, through the structural design of the combination of the inverted isosceles trapezoid surface and the rectangular surface, the scraper, the sectional type jacket, the vibration pad, the forced baffling baffle and the like, the heat exchange area is increased to the maximum extent, the wall sticking phenomenon of the isophthalonitrile is greatly reduced, and the capture rate of the isophthalonitrile is finally improved.
In a second aspect, the invention provides a dry isophthalonitrile capturing method, which is performed by using the dry isophthalonitrile capturing device of the first aspect.
The isophthalonitrile dry-method trapping method provided by the invention is carried out by adopting the device provided by the invention, can realize continuous operation in a closed environment, has high trapping efficiency, and can avoid the wall adhesion phenomenon to the maximum extent.
As a preferred technical scheme of the invention, the method comprises the following steps:
(1) introducing a heat exchange medium into the jacket, and starting the motor and the vibration pad;
(2) starting a bottom discharging device;
(3) and (3) feeding production, and carrying out dry-method collection of the isophthalonitrile.
According to the invention, a steam inlet valve is opened to ensure that steam is introduced into the segmented jacket on the side wall surfaces around the trap to ensure the temperature of the inner wall of the trap, then a motor driving an internal scraper is started to realize the up-and-down scraping of the scraper and the opening of an air injection vibration pad at the bottom outlet of the trap to adjust the vibration frequency, then a bottom discharging device is started, and finally, the feeding production is started to carry out the dry trapping of the isophthalonitrile, so that the tail gas in the trap can not escape into the environment to cause pollution in the trapping process.
Preferably, the heat exchange medium in step (1) is steam.
Preferably, the steam has a pressure of 0.08 to 0.12MPa, and may be, for example, 0.08MPa, 0.09MPa, 0.10MPa, 0.11MPa or 0.12 MPa.
The invention adopts low-pressure steam with the pressure of 0.08-0.12 MPa, and can better ensure that the temperature of the inner wall of the catcher is within the process requirement range.
Preferably, the vibration frequency of the vibration pad is adjusted after the vibration pad is started.
Preferably, the vibration frequency of the vibration pad is adjusted to 6 to 15 times/min, for example, 6 times/min, 7 times/min, 8 times/min, 9 times/min, 10 times/min, 11 times/min, 12 times/min, 13 times/min, 14 times/min or 15 times/min, preferably 8 to 12 times/min.
The vibration frequency of the vibration pad is 6-15 times/min, so that isophthalonitrile powder at the outlet can be discharged better, and the bridging phenomenon of the isophthalonitrile powder at the outlet is avoided.
Preferably, in the feeding production process in the step (3), the temperature of the inner wall of the catcher main body is 105-115 ℃, for example, 105 ℃, 106 ℃, 107 ℃, 108 ℃, 109 ℃, 110 ℃, 111 ℃, 112 ℃, 113 ℃, 114 ℃ or 115 ℃, preferably 108-112 ℃.
The temperature of the inner wall of the catcher main body is controlled to be 105-115 ℃ in the production process, and the catching efficiency can be better improved.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) according to the dry-method collecting device for the m-phthalonitrile, provided by the invention, the two sides are designed into isosceles trapezoids, so that dead angles can be reduced to the greatest extent, blanking is facilitated, the production efficiency is improved, and the investment of fixed assets is reduced;
(2) the dry-method catching device of isophthalonitrile provided by the invention can realize high-efficiency, closed and continuous production, and simultaneously can prevent tail gas in the catcher from escaping into the environment to cause pollution in the catching process, reduce environmental pollution and improve the field environment
(3) The dry-method isophthalonitrile trapping method provided by the invention has high trapping efficiency, wherein the trapping rate of isophthalonitrile reaches over 80 wt%, the trapping rate of isophthalonitrile reaches over 92 wt% under a better design, the residual rate of isophthalonitrile in tail gas is less than or equal to 8 wt%, and the dry-method isophthalonitrile trapping method has higher industrial application value.
Drawings
FIG. 1 is a schematic front view of a isophthalonitrile dry-method trap device provided in example 1 of the present invention.
FIG. 2 is a schematic left-view structural diagram of an isophthalonitrile dry-method capture device provided in example 1 of the invention.
FIG. 3 is a schematic top view showing the structure of an isophthalonitrile dry-method trap apparatus provided in example 1 of the present invention.
In the figure: 1-a rectangular surface; 2-inverting the isosceles trapezoid surface; a 3-isophthalonitrile synthesis gas inlet; 4-tail gas outlet; 5-steam condensate outlet; 6-steam inlet; 7-segmented jacket; 8-isophthalonitrile powder outlet; 901-910-cleaning manholes; 10-a separator; 11-a temperature measuring port; 12-pressure measuring port.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
First, an embodiment
Example 1
The embodiment provides an isophthalonitrile dry-method trapping device, as shown in fig. 1-3, the device comprises a trap main body, four sides of the trap main body are formed by two groups of opposite surfaces, wherein the first group of opposite surfaces are inverted isosceles trapezoid surfaces 2 which are symmetrically arranged, and the second group of opposite surfaces are rectangular surfaces 1. The inclination angle of the inverted isosceles trapezoid surface 2 in the catcher main body is 78 degrees.
The collector is characterized in that an isophthalonitrile synthetic gas inlet 3 and distributed cleaning manholes 901-906 are formed in the top of the collector body, and a temperature measuring port 10 and a pressure measuring port 12 are formed in two sides of the isophthalonitrile synthetic gas inlet 3 in the top of the collector body. A tail gas outlet 4 is arranged at the upper position of the isosceles trapezoid surface 2 of the catcher; a steam condensate outlet 5 is arranged at the lower position close to the side edge of the catcher main body, and a steam inlet 6 is arranged at the upper position close to the side edge of the catcher main body. The lower part of the trap main body is also provided with 4 cleaning manholes 907-910 on a rectangular surface.
The inside scraper that is provided with of trap main part, the scraper passes through wire rope and links to each other with the motor, the position of wire rope and the contact of trap main part is provided with packing sealing device, the inside baffle 10 that is provided with of trap main part.
The outside of the catcher main body is provided with a sectional type jacket 7, the sectional type jacket 7 is filled with steam as a heat exchange medium, and a forced baffling baffle is arranged in the sectional type jacket.
The collector is characterized in that an isophthalonitrile powder outlet 8 is formed in the bottom of the collector main body, two rows of air-jet vibration pads are arranged on two sides of an inverted isosceles trapezoid of the collector main body, close to the isophthalonitrile powder outlet 8, and a discharge spiral device is arranged at the powder outlet.
The heat exchange area of the trapping device is 220m2Volume of 260m3The height of the whole device is 11000 mm.
The method for trapping isophthalodinitrile by the dry trapping device comprises the following steps:
(1) introducing low-pressure steam of 0.1MPa into a clamping sleeve of the catcher main body, and starting a motor to ensure that the scraper realizes vertical scraping; starting the air injection vibration pad, and adjusting the vibration frequency of the air injection vibration pad to 10 times/min;
(2) starting a bottom discharging screw device;
(3) the method comprises the steps of feeding production, carrying out dry-method trapping of isophthalonitrile, and keeping the temperature of the inner wall surface of the trap at 110 ℃ by adjusting the steam flow in the production process.
Example 2
This example provides an isophthalonitrile dry-trapping device which is the same as that of example 1 except that the inclination of the inverted isosceles trapezoid was 60 °. Specifically, the heat exchange area of the trapping device is 200m2Volume of 240m3The height of the whole device is 11000 mm.
The method for collecting isophthalonitrile by the dry collecting device for isophthalonitrile provided in the example is the same as that of the example 1.
Example 3
This example provides an isophthalonitrile dry-trapping device which is the same as that of example 1 except that the inclination angle of the inverted isosceles trapezoidal surface was 85 °. Specifically, the heat exchange area of the trapping device is 240m2Volume of 280m3The height of the whole device is 11000 mm.
The method for collecting isophthalonitrile by the dry collecting device for isophthalonitrile provided in the example is the same as that of the example 1.
Example 4
This example provides an isophthalonitrile dry-trapping device which is the same as that of example 1 except that the inclination angle of the inverted isosceles trapezoidal surface was 70 °. Specifically, the heat exchange area of the trapping device is 210m2Volume of 250m3The height of the whole device is 11000 mm.
The method for collecting isophthalonitrile by the dry collecting device for isophthalonitrile provided in the example is the same as that of the example 1.
Example 5
This example provides an isophthalonitrile dry-trapping device which is the same as that of example 1 except that the inclination angle of the inverted isosceles trapezoidal surface was 82 °. Specifically, the heat exchange area of the trapping device is 227m2Having a volume of 267m3The height of the whole device is 11000 mm.
The method for collecting isophthalonitrile by the dry collecting device for isophthalonitrile provided in the example is the same as that of the example 1.
Example 6
The isophthalonitrile dry-method capturing device provided in this example was the same as in example 1.
The method for trapping isophthalodinitrile by the dry trapping device comprises the following steps:
(1) introducing low-pressure steam of 0.08MPa into a trap main body jacket, and starting a motor to enable a scraper to realize vertical scraping; starting the air injection vibration pad, and adjusting the vibration frequency of the air injection vibration pad to 15 times/min;
(2) starting a bottom discharging screw device;
(3) the production method comprises the steps of feeding production, carrying out dry-method trapping of isophthalonitrile, and keeping the temperature of the inner wall surface of the trap at 115 ℃ by adjusting the steam flow in the production process.
Example 7
The isophthalonitrile dry-method capturing device provided in this example was the same as in example 1.
The method for trapping isophthalodinitrile by the dry trapping device comprises the following steps:
(1) introducing low-pressure steam of 0.12MPa into a clamping sleeve of the catcher main body, and starting a motor to ensure that the scraper realizes vertical scraping; starting the air injection vibration pad, and adjusting the vibration frequency of the air injection vibration pad to 6 times/min;
(2) starting a bottom discharging screw device;
(3) the production method comprises the steps of feeding production, carrying out dry-method trapping of isophthalonitrile, and keeping the temperature of the inner wall surface of the trap at 105 ℃ by adjusting the steam flow in the production process.
Third, test and results
The isophthalonitrile dry-method trapping devices provided in examples 1-7 and comparative example 1 were used for feeding production and dry-method trapping.
The trapping results of examples 1 to 7 and comparative example 1 are shown in table 1.
TABLE 1
From table 1, the following points can be seen:
(1) it can be seen from the comprehensive embodiments 1 to 7 that the catcher main body is formed by two sets of the inverted isosceles trapezoid surfaces and the rectangular surfaces which are symmetrically arranged, dead corners can be avoided to the maximum extent, and the side inclination angle can be reduced, wherein the catching rate of the isophthalonitrile reaches more than 80 wt%, the residual rate of the phthalonitrile in the tail gas is less than or equal to 20 wt%, the catching rate of the isophthalonitrile reaches more than 92 wt% under the better design, and the residual rate of the phthalonitrile in the tail gas is less than or equal to 8 wt%;
(2) it can be seen from the comprehensive descriptions of examples 1 to 5 that, in examples 1 and 5, the collection rates of isophthalonitrile in examples 1 and 5 were 92 wt% and the collection rates of isophthalonitrile in examples 2 and 5 were only 80 wt%, 91 wt% and 84 wt% respectively, compared to examples 2, 3 and 4, in which the inclination angles of the inverted isosceles trapezoidal surfaces were set to 78 ° and 82 °, respectively, and the inclination angles of the inverted isosceles trapezoidal surfaces were set to 60 °, 85 ° and 70 °, respectively, thereby showing that the present application can improve the collection efficiency of isophthalonitrile and reduce the residue of isophthalonitrile in the exhaust gas by setting the inclination angles of the inverted isosceles trapezoidal surfaces to 78 to 82 °, respectively.
In conclusion, the trap body is arranged into a structure that two groups of inverted isosceles trapezoid and rectangular surfaces are combined, so that the volume and the trapping efficiency of the trap can be ensured at the same time, the trapping efficiency is over 80 wt%, and is over 92 wt% in the better design, blanking of isophthalonitrile can be effectively ensured, the material sticking phenomenon is prevented, meanwhile, the device can be used for continuous closed production, and the device has high industrial application value.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The utility model provides an m-phthalodinitrile dry trapping device which characterized in that, the device includes the trap main part, the trap main part constitutes four sides by two sets of relative faces all around, wherein the first set of relative face is the inverted isosceles trapezoid face that the symmetry set up, and the second set of relative face is the rectangle face.
2. The device according to claim 1, characterized in that the inclination of the inverted isosceles trapezoidal faces in the trap body is 60-85 °, preferably 78-82 °.
3. The device according to claim 1 or 2, characterized in that inside the trap body there is a scraper;
preferably, the scraper is connected with an external motor;
preferably, the scraper is connected with the motor through a steel wire rope.
4. The device as claimed in claim 3, wherein a sealing device is arranged at the contact part of the steel wire rope and the catcher main body;
preferably, the form of the sealing means comprises any one of a packing seal, a shim seal, an O-ring seal, a screw seal, an oil seal, a labyrinth seal, a screw seal, a power seal or a mechanical seal, preferably a packing seal.
5. The device according to any one of claims 1 to 4, wherein a jacket is arranged outside the trap body;
preferably, the jacket is a segmented jacket;
preferably, the jacket is filled with a heat exchange medium;
preferably, the heat exchange medium comprises water or steam.
6. The device according to claim 5, wherein a baffle is arranged inside the jacket;
preferably, the baffle is provided with a forced baffling channel.
7. The device according to any one of claims 1 to 6, wherein a powder outlet is formed at the bottom of the catcher body;
preferably, vibration pads are arranged on two sides of the inverted isosceles trapezoid of the catcher main body, close to the powder outlet;
preferably, the vibration pad is an air-jet vibration pad;
preferably, a bottom discharging device is arranged at the powder outlet;
preferably, the bottom discharge device is a discharge screw device.
8. A dry isophthalonitrile capturing method, characterized in that the method is carried out by using the dry isophthalonitrile capturing device according to any one of claims 1 to 7.
9. The method according to claim 8, characterized in that it comprises the steps of:
(1) introducing a heat exchange medium into the jacket, and starting the motor and the vibration pad;
(2) starting a discharging device at the bottom of the catcher;
(3) and (3) feeding production, and carrying out dry-method collection of the isophthalonitrile.
10. The apparatus according to claim 9, wherein the heat exchange medium in step (1) is steam;
preferably, the steam is steam with the pressure of 0.08-0.12 MPa;
preferably, the vibration frequency of the vibration pad is adjusted after the vibration pad is started;
preferably, the vibration frequency of the vibration pad is adjusted to 6-15 times/min, and 8-12 times/min is preferred;
preferably, in the feeding production process in the step (3), the temperature of the inner wall of the catcher main body is 105-115 ℃, and preferably 108-112 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111870988A (en) * | 2020-07-17 | 2020-11-03 | 江苏新河农用化工有限公司 | Trapping method and trapping system for tetrachloroisophthalonitrile reaction gas |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09241232A (en) * | 1996-03-07 | 1997-09-16 | Nippon Shokubai Co Ltd | Production of tetrachloro-ortho-phthalonitrile |
| JP2001163849A (en) * | 1999-12-09 | 2001-06-19 | Showa Denko Kk | Method for producing phthalonitrile compounds |
| EP1113001A2 (en) * | 1999-12-27 | 2001-07-04 | Mitsubishi Gas Chemical Company, Inc. | Process for producing nitrile compounds |
| US20020035287A1 (en) * | 2000-09-21 | 2002-03-21 | Susumu Otsuka | Method of purifying isophthalonitrile |
| KR20150034420A (en) * | 2013-09-26 | 2015-04-03 | 코오롱인더스트리 주식회사 | Method for Producing Phthalonitriles |
| CN106995387A (en) * | 2016-01-25 | 2017-08-01 | 上海泰禾国际贸易有限公司 | Isophthalodinitrile and/or para-Phthalonitrile dry method trapping technique |
| CN107513026A (en) * | 2016-06-15 | 2017-12-26 | 江苏新河农用化工有限公司 | A kind of isophthalodinitrile dry method traps self-emptying technique |
| CN212119460U (en) * | 2020-03-23 | 2020-12-11 | 江苏新河农用化工有限公司 | Isophthalonitrile dry-method trapping device |
-
2020
- 2020-03-23 CN CN202010206664.9A patent/CN111282392A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09241232A (en) * | 1996-03-07 | 1997-09-16 | Nippon Shokubai Co Ltd | Production of tetrachloro-ortho-phthalonitrile |
| JP2001163849A (en) * | 1999-12-09 | 2001-06-19 | Showa Denko Kk | Method for producing phthalonitrile compounds |
| EP1113001A2 (en) * | 1999-12-27 | 2001-07-04 | Mitsubishi Gas Chemical Company, Inc. | Process for producing nitrile compounds |
| US20020035287A1 (en) * | 2000-09-21 | 2002-03-21 | Susumu Otsuka | Method of purifying isophthalonitrile |
| KR20150034420A (en) * | 2013-09-26 | 2015-04-03 | 코오롱인더스트리 주식회사 | Method for Producing Phthalonitriles |
| CN106995387A (en) * | 2016-01-25 | 2017-08-01 | 上海泰禾国际贸易有限公司 | Isophthalodinitrile and/or para-Phthalonitrile dry method trapping technique |
| CN107513026A (en) * | 2016-06-15 | 2017-12-26 | 江苏新河农用化工有限公司 | A kind of isophthalodinitrile dry method traps self-emptying technique |
| CN212119460U (en) * | 2020-03-23 | 2020-12-11 | 江苏新河农用化工有限公司 | Isophthalonitrile dry-method trapping device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111870988A (en) * | 2020-07-17 | 2020-11-03 | 江苏新河农用化工有限公司 | Trapping method and trapping system for tetrachloroisophthalonitrile reaction gas |
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