CN113003255B

CN113003255B - Catalyst loading and unloading device and application thereof

Info

Publication number: CN113003255B
Application number: CN202110193637.7A
Authority: CN
Inventors: 曹仁均
Original assignee: Shanghai Yangshen Petrochemical Equipment Installation Co ltd
Current assignee: Shanghai Yangshen Petrochemical Equipment Installation Co ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2023-02-17
Anticipated expiration: 2041-02-20
Also published as: CN113003255A

Abstract

The invention provides a catalyst loading and unloading device and a using method thereof, comprising the following steps: (1) Adding a fresh catalyst into a pretreatment device through a closed bag-removing system, and dehumidifying the fresh catalyst in the pretreatment device; (2) Feeding the fresh catalyst subjected to dehumidification treatment into a cyclone separator, separating the fresh catalyst from gas in the cyclone separator, feeding the fresh catalyst into a fresh catalyst box, introducing the gas into a gas filtering device for filtering, and discharging the filtered gas; (3) When the catalyst in the fresh catalyst box is used up, the fresh catalyst is changed into the waste catalyst, and the waste catalyst is transported away from the fresh catalyst box. By introducing the closed bag-removing system, the powder catalyst is removed in a closed environment and then added into the pretreatment device, so that the escape of dust gas into the environment is reduced, the exposure time of the catalyst in the environment is shortened, and the activity and quality of the catalyst can be better maintained.

Description

Catalyst loading and unloading device and application thereof

Technical Field

The invention belongs to the technical field of catalysts, and particularly relates to a catalyst loading and unloading device and application thereof.

Background

In most chemical production processes, it is often necessary to catalyze reactants with a large amount of catalyst so that the chemical reaction can be smoothly completed and the production efficiency of products is increased. In order to improve the catalytic effect of the catalyst and the contact area of the catalyst and reaction materials, a plurality of catalysts are prepared into particle and powder forms, and the contact area between the catalyst and reactants is improved, so that the catalytic efficiency is improved. The catalyst is used in an extremely large amount, and the catalyst gradually loses the catalytic effect after being used for a period of time, so that the catalyst must be frequently replaced by new one. In the process of transporting, replacing, loading and unloading the catalyst, the powder catalyst is easy to leak to the working environment, thereby causing environmental pollution and influencing the health and safety of operators. The existing loading and unloading method of the powder catalyst generally comprises the steps of manually disassembling the powder catalyst, then pouring the catalyst into a discharge chute, then conveying the catalyst into a reaction device through a conveying system, manually bagging the used catalyst directly from the reaction device, and then transporting the catalyst out of a factory. In the process of manually removing the bagged catalyst, the powdery catalyst can fly to the operation environment of workers to cause environmental pollution and damage the respiratory system and eyes of the operators, and the catalyst is exposed in the operation environment for a long time or in the long-term transportation and storage environment to easily absorb moisture, so that the activity of the catalyst is reduced, or the reaction is influenced, more byproducts are generated in the reaction process, and the product purity is reduced. In the process of manually supporting the bagged catalyst, the powder catalyst is escaped to the operating environment of workers, so that the environmental pollution is caused, and the respiratory system and eyes of the workers are damaged. There is a need for an environmentally friendly and effective catalyst handling apparatus.

Disclosure of Invention

In order to solve the above technical problems, a first aspect of the present invention provides a catalyst handling apparatus, comprising at least the following steps:

(1) Adding a fresh catalyst into a pretreatment device through a closed bag-removing device, and dehumidifying the fresh catalyst in the pretreatment device;

(2) Sending the fresh catalyst subjected to dehumidification treatment into a cyclone separator, separating the fresh catalyst from gas in the cyclone separator, introducing the fresh catalyst into a fresh catalyst box, introducing the gas into a gas filtering device for filtering, and discharging the filtered gas;

(3) When the catalyst in the fresh catalyst box is used up, the fresh catalyst is changed into the waste catalyst, and the waste catalyst is transported away from the fresh catalyst box.

Preferably, the waste catalyst in the step (3) is bagged by a closed bagging system and then is transported away from a fresh catalyst box.

Preferably, the pretreatment device comprises a heating chamber, a heating device arranged at the bottom of the heating chamber, a plurality of vent pipes arranged at the top of the heating chamber, and filter sheets all arranged in the vent pipes, wherein one side of the heating chamber is communicated with the closed bag dismantling system, and the other side of the heating chamber is communicated with the cyclone separator.

Preferably, the lower end of the cylinder body of the cyclone separator is detachably connected with the fresh catalyst box, one side of the cylinder body is communicated with the heating chamber, and the top of the cylinder body is communicated with the vent pipe through a gas guide pipe.

Preferably, a cleaning coating is arranged on the inner wall of the cylinder body of the cyclone separator.

Preferably, the cleaning coating comprises a tie layer and a polytetrafluoroethylene layer connected.

Preferably, the gas filtering device comprises a gas purifying box communicated with the gas guide pipe.

Preferably, a water tank purifier and an active carbon purification box communicated with the water tank purifier are arranged in the gas purification box, the water tank purifier is communicated with the gas guide pipe, and the active carbon purification box is communicated with the atmosphere.

Preferably, the bottom of the activated carbon purifying box is provided with an ultraviolet sterilizing lamp.

The catalyst loading and unloading device provided by the invention is applied to loading and unloading of catalysts for various chemical reactions.

Has the advantages that: according to the technical scheme, the closed bag opening system is introduced, the powder catalyst is opened in a closed environment and then added into the pretreatment device, so that the dust gas is prevented from escaping into the environment, the harm of the dust gas to the body of an operator is reduced, the exposure time of the catalyst in the environment is shortened, and the activity and quality of the catalyst can be well maintained. The catalyst is dried in the pretreatment device, so that the moisture in the catalyst is reduced, and the activity and the using effect of the catalyst are improved. And introducing the gas with the powder into a gas filtering device through a cyclone separator for filtering, discharging the gas after filtering, and collecting the separated catalyst powder into a fresh catalyst box for use. The adhesive layer and the polytetrafluoroethylene layer are arranged on the inner wall of the cylinder body of the cyclone separator, and powder particles deposited on the cylinder body of the cyclone separator are reduced by utilizing the non-adhesiveness and the smoothness of the polytetrafluoroethylene layer, so that the powder catalyst falls into a fresh catalyst box to the maximum extent, the utilization rate of the catalyst is improved, and the self-cleaning property of the cylinder body of the cyclone separator is improved.

Drawings

FIG. 1 is a diagram of the apparatus relating to the loading of a catalyst in example 1.

FIG. 2 is a diagram of the apparatus involved in the unloading of the catalyst in example 1.

1-lifting mechanical arm, 2-closed bag opener, 3-flow divider, 4-vacuum pump, 5-heating chamber, 6-heating device, 7-vent pipe, 8-gas guide pipe, 9-cylinder of cyclone separator, 10-air pump, 11-gas purification box, 12-water tank purifier, 13-activated carbon purification box, 14-gas discharge port, 15-activated carbon purification sheet, 16-ultraviolet sterilizing lamp, 17-waste catalyst box, 18-meter, 19-electric control valve, 20-bag sealing mechanical arm, 21-bag holding mechanical arm, 22-packaging bag and 23-fresh catalyst box.

Detailed Description

For purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.

Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.

When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.

In order to solve the above technical problem, a first aspect of the present invention provides a catalyst handling apparatus, including at least the following steps:

The inventor detaches the bag of the powder catalyst in a closed environment by introducing a closed bag detaching system, and then adds the bag to a pretreatment device, so that the dust gas is prevented from escaping into the environment, the harm of the dust gas to the body of an operator is reduced, the exposure time of the catalyst in the environment is shortened, and the activity and the quality of the catalyst can be well maintained.

As a preferable technical scheme, the waste catalyst in the step (3) is bagged in a closed bagging system and then is transported away from a fresh catalyst box.

The inventor packs the used catalyst in a closed environment by introducing a closed bagging system, and also reduces the powder from flying into the environment to pollute the environment and cause harm to the respiratory system and eyes of operators.

As a preferable technical scheme, the pretreatment device comprises a heating chamber, a heating device arranged at the bottom of the heating chamber, a plurality of vent pipes arranged at the top of the heating chamber, and filter sheets all arranged in the vent pipes, wherein one side of the heating chamber is communicated with the closed bag dismantling system, and the other side of the heating chamber is communicated with the cyclone separator.

The inventor properly heats and dries the catalyst by installing a pretreatment device, reduces the moisture in the catalyst, and improves the activity and the efficiency of the catalyst. The wet air is discharged out of the heating chamber through the vent pipe, and the powder catalyst carried in the air is retained in the heating chamber by using the filter sheet, so that the loss of the catalyst is reduced.

As a preferred technical scheme, the lower end of a cylinder body of the cyclone separator is detachably connected with a fresh catalyst box, one side of the cylinder body is communicated with a heating chamber, and the top of the cylinder body is communicated with a vent pipe through a gas guide pipe.

The gas and the solid are separated by the cyclone separator, so that the purity and the utilization efficiency of the catalyst are improved.

As a preferable technical scheme, a cleaning coating is arranged on the inner wall of the cylinder body of the cyclone separator.

The cyclone separator utilizes the centrifugal force of the powder catalyst to be greater than gravity and inertial force, and can throw the powder catalyst to the inner wall of the cylinder of the cyclone separator under the action of airflow, so that gas-solid separation is realized, and the solid can slide to the fresh catalyst box along the inner wall of the cylinder of the cyclone separator, so that the collection of the catalyst is realized. However, the molecular force exists between the inner wall of the cylinder of the cyclone separator and the powder catalyst, so that the powder catalyst is adhered to the inner wall of the cylinder of the cyclone separator to form a deposition layer, and the efficiency of the cyclone separator is reduced.

As a preferred technical scheme, the cleaning coating comprises a bonding layer and a polytetrafluoroethylene layer which are connected.

As a preferable technical scheme, the preparation raw materials of the bonding layer comprise 10-30 parts of methyl methacrylate, 10-30 parts of butyl acrylate, 1-5 parts of glycidyl methacrylate, 10-30 parts of octadecyl methacrylate, acrylamide, 0.5-2 parts of sodium dodecyl sulfate, 0.5-2 parts of p-octylphenol polyoxyethylene ether, 2- (perfluorooctyl) ethyl methacrylate, 1-2 parts of potassium persulfate, 0.1-0.5 part of inorganic filler and water.

As a preferable technical scheme, the mass ratio of the sum of the mass of the methyl methacrylate, the butyl acrylate, the glycidyl methacrylate and the stearyl methacrylate to the mass of the acrylamide is (16-20): 1.

as a preferable technical scheme, the mass ratio of the sum of the mass of the methyl methacrylate, the butyl acrylate, the glycidyl methacrylate and the octadecyl methacrylate to the 2- (perfluorooctyl) ethyl methacrylate is (20-25): 1.

as a preferable technical scheme, the raw materials for preparing the polytetrafluoroethylene layer are mainly polytetrafluoroethylene.

Because the polytetrafluoroethylene has smaller surface energy and surface tension and very small interaction force with molecules, the polytetrafluoroethylene has excellent non-adhesion performance, can keep the cleanness of the inner wall of the cyclone separator and reduce the powder catalyst from being deposited on the surface of the cyclone separator, but the polytetrafluoroethylene is difficult to adhere to the surface of the cylinder of the cyclone separator. Therefore, the inventor arranges a bonding layer with bonding effect between the polytetrafluoroethylene layer and the inner wall of the cylinder body of the cyclone separator. The inventor selects an acrylate adhesive with good bonding performance and low cost as a main raw material of the bonding layer, and adds acrylamide into the acrylate adhesive to provide more cross-linking points for the acrylate adhesive, so that the degree of cross-linking of the acrylate adhesive is improved, the bonding performance of the acrylate adhesive is improved, and meanwhile, the molecular acting force between the acrylate adhesive and the inner wall of the cylinder body of the cyclone separator is improved by utilizing the polarity of the acrylamide, but the bonding performance between the acrylate adhesive and the polytetrafluoroethylene layer is influenced by the excessive addition of the acrylamide, and the bonding performance between the bonding layer and the cyclone separator cannot be improved well by the insufficient addition of the acrylamide. The inventor further improves the bonding property between the acrylate adhesive and the polytetrafluoroethylene coating by adding 2- (perfluorooctyl) ethyl methacrylate, and the molecular acting force between the 2- (perfluorooctyl) ethyl methacrylate and the polytetrafluoroethylene can be improved due to the fluorine atom contained in the 2- (perfluorooctyl) ethyl methacrylate, so that the bonding force between the polytetrafluoroethylene coating and the bonding layer is improved, but the inventor finds that the instability of the prepared acrylate adhesive is improved due to the excessive addition of the 2- (perfluorooctyl) ethyl methacrylate, and the bonding property between the acrylate adhesive and the polytetrafluoroethylene coating cannot be improved well due to the insufficient addition of the 2- (perfluorooctyl) ethyl methacrylate. The acrylate adhesive in the technical scheme is used for being coated on the inner wall of the cylinder of the cyclone separator, the cylinder has a large radian, if the toughness of the adhesive is too small, the adhesive is easily bonded with the inner wall of the cylinder of the cyclone separator insecurely, and the phenomenon that the adhesive layer is cracked easily occurs along with the increase of the service time. The inventor finds that the toughness of the acrylate adhesive after curing can be better improved by adding a certain amount of octadecyl methacrylate, so that the acrylate adhesive can keep stronger bonding strength on the inner wall of the cylinder body of the arc cyclone separator. The inventors believe that the possible reason is that the stearyl methacrylate has a longer carbon chain which increases the toughness of the adhesive and allows the acrylate adhesive to retain a long bond on the curved wall.

As a preferable technical scheme, the inorganic filler is mica powder, and the particle size of the mica powder is 300-400 meshes.

The adhesive layer needs to have good impact resistance because the powder catalyst in the cyclone is thrown to the inner wall of the cyclone cylinder. The inventor finds that the addition of mica powder with a certain mesh number into the acrylate adhesive not only can improve the impact resistance of the adhesive layer, but also can improve the toughness of the adhesive layer, but the mica powder with a too large mesh number is easy to agglomerate, so that the smoothness of the adhesive layer is influenced, and the mica powder with a too small mesh number is easy to influence the smoothness of the polytetrafluoroethylene layer.

As a preferred technical scheme, the gas filtering device comprises a gas purifying box communicated with the gas guide pipe.

As a preferred technical scheme, a water tank purifier and an active carbon purification box communicated with the water tank purifier are arranged in the gas purification box, the water tank purifier is communicated with the gas guide pipe, and the active carbon purification box is communicated with the atmosphere.

As a preferable technical scheme, the bottom of the activated carbon purifying box is provided with an ultraviolet sterilizing lamp.

In addition, the starting materials used are all commercially available, unless otherwise specified.

Example 1

The catalyst loading and unloading device in this embodiment includes the following steps:

(1) Adding a fresh catalyst into a pretreatment device through a closed bag-removing device, and heating and dehumidifying the fresh catalyst in the pretreatment device;

(2) Feeding the fresh catalyst subjected to dehumidification treatment into a cyclone separator, separating the fresh catalyst from gas in the cyclone separator, feeding the fresh catalyst into a fresh catalyst box, introducing the gas into a gas filtering device for filtering, and discharging the filtered gas;

(3) When the catalyst in the fresh catalyst box is used up, the fresh catalyst is changed into a waste catalyst, and the waste catalyst is transported out of the fresh catalyst box to the waste catalyst box;

(4) And bagging the waste catalyst by using a closed bagging system.

As shown in fig. 1, the closed bag removing device in step (1) includes an elevating mechanical arm 1 for elevating the fresh catalyst in the bag, a closed bag remover 2 located below the elevating mechanical arm 1 for automatically removing the bag, a flow divider 3 for dividing the fresh catalyst into the pretreatment device, and a vacuum pump 4 for providing power. After being lifted to the upper part of the closed bag removing device 2 by the lifting mechanical arm 1, the bagged fresh catalyst is placed into the closed bag removing device 2 for bag removing, and the fresh catalyst after bag removing flows into the flow divider 3 through the closed bag removing device 2 under the power driving of the vacuum pump 4 and then flows into the pretreatment device through the flow divider 3.

The pretreatment device comprises a heating chamber 5 for heating the catalyst, one side of the heating chamber 5 is communicated with the closed bag dismantling system, the other side of the heating chamber 5 is communicated with the cyclone separator, a heating device 6 which is arranged at the bottom of the heating chamber 5 and can generate heat, five vent pipes 7 arranged at the top of the heating chamber 5 and filter sheets which are all arranged in the vent pipes 7, the catalyst is pretreated and heated through the heating chamber 5, the moisture in the catalyst is removed, and the activity and the efficiency of the catalyst are improved. The heating efficiency of the heating chamber 5 is improved by drawing the hot and humid air in the heating chamber 5 out of the heating chamber through the ventilation pipe 7, and in order to prevent the powder catalyst from escaping from the heating chamber 5, a filter sheet is arranged at the bottom of the ventilation pipe 7, and the aperture of the filter sheet is smaller than the particle size of the catalyst. The air pipes 7 in the preheating device are all communicated with an air duct 8. The lower end of a cylinder body 9 of the cyclone separator is detachably connected with a fresh catalyst box, one side of the cylinder body 9 of the cyclone separator is communicated with the heating chamber 5, and the top of the cylinder body 9 of the cyclone separator is communicated with a vent pipe 7 through a gas guide pipe 8. The inner wall of the cylinder 9 of the cyclone separator is provided with the cleaning coating, and the cleaning coating can improve the self-cleaning property of the cyclone separator, reduce the deposition of the powder catalyst on the inner wall of the cylinder, reduce the separation efficiency and reduce the loss of the powder catalyst. An air pump 10 is arranged between the cyclone separator and the air filtering device, and the air pump 10 is also a vacuum pump. The dehumidified fresh catalyst enters the cyclone separator from the heating chamber 5 under the driving of the air pump 10, and because the centrifugal force of the powder catalyst is greater than the gravity, the powder catalyst is thrown onto the inner wall of the cylinder 9 of the cyclone separator, then slides along the inner wall of the cylinder 9 of the cyclone separator to the fresh catalyst box 23, and the gas mixed with a little powder flows to the gas filtering device through the gas guide pipe 8. The gas filtering device comprises a gas purifying box 11 communicated with the gas guide pipe 8. The gas purification device is characterized in that a water tank purifier 12 and an activated carbon purification box 13 communicated with the water tank purifier 12 are arranged in the gas purification box 11, the water tank purifier 12 is communicated with the gas guide pipe 8, a gas discharge port 14 is arranged at the bottom of the activated carbon purification box 13, and the gas discharge port 14 is communicated with the atmosphere. The gas that is mingled with the powder enters into the water tank clarifier through the air duct, uses the running water to wash away the powder of the miscellaneous of clamp in the gas, and the gas after the washing circulates to the active carbon purifying box 13 through water tank clarifier 12 again, be equipped with the active carbon purifying sheet 15 that is arranged in adsorbing gaseous impurity in the active carbon purifying box 13, the bottom of active carbon purifying box 13 is provided with ultraviolet sterilamp 16, ultraviolet sterilamp 16 can play the effect of disinfecting to gas purification, and later gas row goes in the environment. As shown in fig. 2, the sealed bagging system includes a meter 18 communicating with the waste catalyst tank 17, an electrically controlled valve 19 mounted on a lower end of the meter 18, bag gripping manipulators 21 mounted on both sides of a lower end of the waste catalyst tank 17, and a bag sealing manipulator 20 mounted on the waste catalyst tank 17, and a sensor system is mounted on the meter 18. When the catalyst in the waste catalyst box 17 needs to be transported out, the bag holding manipulator 21 and the electric control valve 19 are started, the packaging bag 22 is held by the bag holding manipulator 21, after the electric control valve 19 is started, the waste catalyst flows into the packaging bag 22 from the meter 18, when the waste catalyst flowing out of the meter 18 reaches a certain amount, the electric control valve 19 is controlled to be closed by the sensor system, meanwhile, the bag sealing manipulator 20 is controlled by the sensor system to seal the bag, the bagging process of the waste catalyst is completed, and then the waste bagged catalyst is transported out of an operation workshop by an operator.

Clean coating is including tie coat and the polytetrafluoroethylene layer that is connected, the tie coat is formed through the coating, the polytetrafluoroethylene layer is formed through the spraying, the tie coat, the preparation raw materials include 20 parts methyl methacrylate, 20 parts butyl acrylate, 2 parts glycidyl methacrylate, 20 parts octadecyl methacrylate, acrylamide, 1.5 parts sodium dodecyl sulfate, 1.5 parts p octyl phenol polyoxyethylene ether, 2- (perfluor octyl) ethyl methacrylate, 1.5 parts potassium persulfate, 0.3 parts inorganic filler and 100 parts water. The methyl methacrylate is purchased from Jinan Aohui chemical industry Co., ltd, the brand is Aohui, the butyl acrylate is purchased from Shandong Xuchen chemical industry science and technology Co., ltd, the brand is as follows: 00, the 2- (perfluorooctyl) ethyl methacrylate is purchased from Hubei Jinleda chemical company, inc., CAS:1996-88-9, and the octyl phenol polyoxyethylene ether is purchased from Jiangsu Mao Henheng chemical company, inc. The polytetrafluoroethylene layer is prepared from polytetrafluoroethylene which is emulsion purchased from Taicangkeda plastic raw material Co., ltd under the brand name of 121D. The mass ratio of the sum of the mass of the methyl methacrylate, the butyl acrylate, the glycidyl methacrylate and the octadecyl methacrylate to the acrylamide is 16:1, 4 parts of acrylamide. The mass ratio of the sum of the mass of the methyl methacrylate, the butyl acrylate, the glycidyl methacrylate and the octadecyl methacrylate to the 2- (perfluorooctyl) ethyl methacrylate is 20:1, and 3.2 parts of 2- (perfluorooctyl) ethyl methacrylate. The inorganic filler is mica powder, the particle size of the mica powder is 325 meshes, and the mica powder is purchased from mica processing Co., ltd.

The bonding layer is an acrylate adhesive, and the preparation method of the acrylate adhesive comprises the following steps:

(1) Mixing and stirring methyl methacrylate, butyl acrylate, 2- (perfluorooctyl) ethyl methacrylate, glycidyl methacrylate, octadecyl methacrylate, acrylamide, sodium dodecyl sulfate, p-octylphenol polyoxyethylene ether and 50 parts of water to obtain a mixture A;

(2) Mixing one third of the mixture A with equal amount of water at 80 ℃, adding one third of potassium persulfate, reacting for 30min, and dropwise adding the rest mixture A and potassium persulfate to obtain a mixture B;

(3) After the mixture is cooled to room temperature, adjusting the pH value to 7.2 by using ammonia water to obtain a mixture C;

(4) And (3) adding mica powder into the mixture C and stirring to obtain the mica powder.

The catalyst loading and unloading device described in this embodiment is applied to loading and unloading of catalysts for various chemical reactions.

Example 2

The difference between this embodiment and embodiment 1 is that the cleaning coating in this embodiment includes a bonding layer and a polytetrafluoroethylene layer which are connected, and the bonding layer is prepared from 20 parts of methyl methacrylate, 20 parts of butyl acrylate, 2 parts of glycidyl methacrylate, 20 parts of stearyl methacrylate, acrylamide, 1.5 parts of sodium lauryl sulfate, 1.5 parts of p-octylphenol polyoxyethylene ether, 2- (perfluorooctyl) ethyl methacrylate, 1.5 parts of potassium persulfate, 0.3 part of an inorganic filler, and 100 parts of water. The methyl methacrylate is purchased from Jinan Aohui chemical industry Co., ltd, the name is Aohui, the butyl acrylate is purchased from Shandong Xun chemical industry Co., ltd, the name is: 00, the 2- (perfluorooctyl) ethyl methacrylate is purchased from Hubei Jinleda chemical company, inc., CAS:1996-88-9, and the octyl phenol polyoxyethylene ether is purchased from Jiangsu Mao Henheng chemical company, inc. The polytetrafluoroethylene layer is prepared from polytetrafluoroethylene which is emulsion purchased from Taicangkeda plastic raw material Co., ltd under the brand name of 121D. The mass ratio of the sum of the mass of the methyl methacrylate, the butyl acrylate, the glycidyl methacrylate and the stearyl methacrylate to the mass of the acrylamide is 20: 3.2 parts of acrylamide. The mass ratio of the sum of the mass of the methyl methacrylate, the butyl acrylate, the glycidyl methacrylate and the octadecyl methacrylate to the 2- (perfluorooctyl) ethyl methacrylate is 25: 2.6 parts of 2- (perfluorooctyl) ethyl methacrylate. The inorganic filler is mica powder, the particle size of the mica powder is 325 meshes, and the mica powder is purchased from Baofeng mica processing Co.

(1) Mixing and stirring methyl methacrylate, butyl acrylate, 2- (perfluorooctyl) ethyl methacrylate, glycidyl methacrylate, stearyl methacrylate, acrylamide, sodium dodecyl sulfate, p-octylphenol polyoxyethylene ether and 50 parts of water to obtain a mixture A;

(3) After the mixture is cooled to room temperature, adjusting the pH to 7.2 by using ammonia water to obtain a mixture C;

Example 3

The difference between this example and example 1 is that the mass ratio of the sum of the masses of methyl methacrylate, butyl acrylate, glycidyl methacrylate and stearyl methacrylate to acrylamide in this example is 10:1, 6.5 parts of acrylamide, and the rest technical characteristics are the same as those in the example 1.

Example 4

The difference between this example and example 1 is that the mass ratio of the sum of the masses of methyl methacrylate, butyl acrylate, glycidyl methacrylate and stearyl methacrylate to acrylamide in this example is 25: 2.6 parts of acrylamide, and the other technical characteristics are the same as those in the embodiment 1.

Example 5

The difference between this example and example 1 is that the mass ratio of the sum of the masses of methyl methacrylate, butyl acrylate, glycidyl methacrylate and stearyl methacrylate to 2- (perfluorooctyl) ethyl methacrylate in this example is 15:1, 4.3 parts of the 2- (perfluorooctyl) ethyl methacrylate, and the other technical characteristics are the same as those in example 1.

Example 6

The difference between this example and example 1 is that the mass ratio of the sum of the masses of methyl methacrylate, butyl acrylate, glycidyl methacrylate and stearyl methacrylate to 2- (perfluorooctyl) ethyl methacrylate in this example is 30: 2.2 parts of 2- (perfluorooctyl) ethyl methacrylate, and the other technical characteristics are the same as those in example 1.

Example 7

The difference between this example and example 1 is that this example does not contain stearyl methacrylate, and the other technical features are the same as those of example 1.

Example 8

The difference between this example and example 1 is that this example does not contain stearyl methacrylate and is replaced by ethyl acrylate, and the other technical features are the same as those of example 1.

Example 9

The difference between this example and example 1 is that the inorganic filler in this example is mica powder having a particle size of 200 mesh, which is purchased from tourmaline mineral products ltd. The remaining technical features are the same as in example 1.

Example 10

The difference between this embodiment and embodiment 1 is that the inorganic filler in this embodiment is mica powder, the particle size of the mica powder is 500 meshes, the mica powder is purchased from shenzhen heyangqi powder science and technology limited, and the other technical features are the same as those in embodiment 1.

Example 11

The difference between this example and example 1 is that the inorganic filler is not contained in this example, and the other technical features are the same as those in example 1.

Performance test

Performance test one

Respectively coating the acrylate adhesive prepared in the embodiments 1 to 10 on 10 arc-shaped stainless steel sheets, spraying polytetrafluoroethylene on the acrylate adhesive layer, drying for 72 hours in an indoor environment, observing whether cracking occurs between the acrylate adhesive and the arc-shaped stainless steel sheets, wherein the cracking is unqualified and the cracking is not qualified, so as to evaluate the stability of the acrylate adhesive, wherein the stability of 0 unqualified is excellent, the stability of 1-2 unqualified is good, and the stability of more than 3 unqualified is poor; and observing whether the acrylic ester adhesive and the polytetrafluoroethylene layer crack or not, wherein the acrylic ester adhesive is unqualified if the acrylic ester adhesive and the polytetrafluoroethylene layer crack, and the acrylic ester adhesive is qualified if the acrylic ester adhesive does not crack, so as to evaluate the cohesiveness of the acrylic ester adhesive, wherein 0 unqualified cohesiveness is excellent, 1-2 unqualified cohesiveness is good, and more than 3 unqualified cohesiveness is poor.

Performance test 2

The acrylate adhesives prepared in examples 1 to 10 were coated on 10 arc-shaped stainless steel sheets, respectively, dried in an indoor environment for 72 hours, and the acrylate adhesive layer was touched with a hand, and the smoothness was recorded as unacceptable if the hand was rough with granular protrusions, and acceptable if the hand was smooth without granular protrusions.

	Tack coat stability	Adhesion of adhesive layer	Smoothness of the surface
				Example 1	Superior food	Youyou (an instant noodle)	Qualified
Example 2	Superior food	Superior food	Qualified
				Example 3	Superior food	Difference (D)	Qualified
Example 4	Good wine	Superior food	Qualified
				Example 5	Difference (D)	Superior food	Qualified
Example 6	Youyou (an instant noodle)	Difference (D)	Qualified
				Example 7	Difference (D)	Good wine	Qualified
Example 8	Difference between	Good quality	Qualified
				Example 9	Good quality	Good wine	Fail to be qualified
Example 10	Good wine	Good quality	Incompatibility ofGrid (C)
				Example 11	Good wine	Youyou (an instant noodle)	Qualified

Through the performance tests, the proper amount of acrylamide and 2- (perfluorooctyl) ethyl methacrylate can improve the adhesive property between the adhesive layer and the cylinder of the cyclone separator and the adhesive property and stability between the adhesive layer and the polytetrafluoroethylene layer, and the stearyl methacrylate can better improve the toughness of the adhesive layer, so that the adhesive layer can be firmly adhered to the inner wall of the arc-shaped cylinder of the cyclone separator, and the proper amount of mica powder can improve the toughness of the adhesive layer and can also improve the smoothness of the adhesive layer.

While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.

Claims

1. The catalyst loading and unloading device is characterized by at least comprising a cyclone separator, wherein a cleaning coating is arranged on the inner wall of a cylinder body of the cyclone separator; the cleaning coating comprises a bonding layer and a polytetrafluoroethylene layer which are connected; the use method of the catalyst loading and unloading device comprises the following steps:

step 1: adding a fresh catalyst into a pretreatment device through a closed bag-removing system, and dehumidifying the fresh catalyst in the pretreatment device;

step 2: sending the fresh catalyst subjected to dehumidification treatment into a cyclone separator, separating the fresh catalyst from gas in the cyclone separator, introducing the fresh catalyst into a fresh catalyst box, introducing the gas into a gas filtering device for filtering, and discharging the filtered gas;

and step 3: when the catalyst in the fresh catalyst box is used up, the fresh catalyst is changed into a waste catalyst, and the waste catalyst is transported away from the fresh catalyst box;

the bonding layer is prepared from the raw materials of 10-30 parts of methyl methacrylate, 10-30 parts of butyl acrylate, 1-5 parts of glycidyl methacrylate, 10-30 parts of octadecyl methacrylate, acrylamide, 0.5-2 parts of lauryl sodium sulfate, 0.5-2 parts of p-octylphenol polyoxyethylene ether, 2- (perfluorooctyl) ethyl methacrylate, 1-2 parts of potassium persulfate, 0.1-0.5 part of inorganic filler and water; the inorganic filler is mica powder, and the particle size of the mica powder is 300-400 meshes.

2. The catalyst handling apparatus of claim 1 wherein the spent catalyst in step 3 is bagged by a closed bagging system and transported away from the fresh catalyst tank.

3. The catalyst handling apparatus of claim 1 or 2, wherein the pre-treatment apparatus comprises a heating chamber, a heating device installed at the bottom of the heating chamber, a plurality of ventilation pipes installed at the top of the heating chamber, and filter sheets all installed in the ventilation pipes, wherein one side of the heating chamber is communicated with the closed bag-dismantling system, and the other side is communicated with the cyclone separator.

4. The catalyst handling apparatus of claim 1 wherein the cyclone has a lower end removably connected to a fresh catalyst tank, one side of the cyclone communicating with the heating chamber and a top portion communicating with the vent pipe via a gas conduit.

5. The catalyst handling device of claim 1 wherein the gas filtration device comprises a gas purge bin in communication with the gas conduit.

6. The catalyst handling device of claim 5 wherein the gas clean-up tank has a tank cleaner and an activated carbon clean-up tank in communication with the tank cleaner, the tank cleaner is in communication with the gas duct, and the activated carbon clean-up tank is in communication with the atmosphere.

7. The catalyst handling apparatus of claim 6 wherein the bottom of the activated carbon purge bin is provided with an ultraviolet germicidal lamp.

8. A catalyst handling apparatus according to any one of claims 1 to 7 for use in catalyst handling in chemical reactions of various types.