Catalyst preparation device and method

Abstract

The invention relates to the field of catalyst preparation, and discloses a catalyst preparation device and method. The catalyst preparation device comprises a catalyst preparation unit which is used for preparing a catalyst in a predetermined atmosphere environment and is provided with a gas inlet and a gas outlet; the gas regulation and control unit is communicated with the gas inlet of the catalyst preparation unit and is used for regulating and controlling the atmosphere in the catalyst preparation unit; the tail gas monitoring unit is communicated with the gas outlet of the catalyst preparation unit and is used for monitoring the components of the tail gas discharged from the gas outlet; and the tail gas treatment unit is communicated with the gas outlet of the catalyst preparation unit and is used for treating tail gas discharged from the gas outlet. The catalyst preparation device can solve the problem that an existing catalyst preparation device cannot realize multi-atmosphere environment adjustment and cannot monitor atmosphere conditions to adjust the multi-atmosphere environment in the preparation process.

Description

Technical Field

[0001] The present invention relates to the field of catalyst preparation, and in particular to a catalyst preparation device and method. Background Art

[0002] At present, different types of catalysts require different atmospheres during the preparation process. For example, the calcination process of Cu / ZnO / Al2O3 methanol catalysts usually needs to be carried out in an oxygen-rich environment, and CeO2 / Ni catalysts usually need to be ventilated with nitrogen and hydrogen to achieve an anaerobic environment during calcination and drying. However, ordinary calciners and spray dryers can only achieve a single atmosphere condition, that is, calcination or drying in an air atmosphere. For catalysts with different atmosphere requirements, different production devices and equipment are required, which cannot adapt to the diversified production of catalysts in enterprises, greatly increasing the production costs of enterprises. In addition, when the catalyst is calcined and dried, it is impossible to monitor the atmosphere conditions in the calciner or dryer to adjust it, which reduces the controllability and safety of the catalyst product production, and ultimately reduces the quality of the catalyst product. Summary of the invention

[0003] The purpose of the present invention is to overcome the problem in the prior art that it is impossible to achieve multi-atmosphere environment regulation and monitor atmosphere conditions to adjust them during the catalyst preparation process.

[0004] In order to achieve the above object, the present invention provides a catalyst preparation device, comprising:

[0005] A catalyst preparation unit, the catalyst preparation unit is used to prepare a catalyst under a predetermined atmosphere and has a gas inlet and a gas outlet;

[0006] A gas regulating unit, the gas regulating unit being in communication with the gas inlet of the catalyst preparation unit for regulating the atmosphere in the catalyst preparation unit;

[0007] an exhaust gas monitoring unit, the exhaust gas monitoring unit being in communication with a gas outlet of the catalyst preparation unit to monitor the exhaust gas discharged from the gas outlet; and

[0008] A tail gas treatment unit is connected to the gas outlet of the catalyst preparation unit to treat the tail gas discharged from the gas outlet.

[0009] Optionally, the gas control unit comprises a gas pipeline having one end connected to the gas inlet, and a flow meter and a first control valve arranged on the gas pipeline, and the other end of the gas pipeline is used to be connected to a predetermined atmosphere source.

[0010] Optionally, the exhaust gas treatment unit includes an exhaust pipe having one end connected to the gas outlet, a water seal system connected to the other end of the exhaust pipe, and a second control valve arranged on the exhaust pipe.

[0011] Optionally, the exhaust gas monitoring unit includes a monitoring pipe connected to the exhaust pipe at one end, an airbag connected to the other end of the monitoring pipe, and a third control valve arranged on the monitoring pipe, and the one end of the monitoring pipe is located upstream of the second control valve.

[0012] Optionally, the second control valve is a one-way valve.

[0013] Optionally, an induced draft fan is provided on the exhaust duct.

[0014] Optionally, the catalyst preparation unit is used to calcine or dry the catalyst.

[0015] Optionally, the catalyst preparation unit comprises a medium-temperature atmosphere box furnace, and the gas inlet and the gas outlet of the catalyst preparation unit are arranged on the medium-temperature atmosphere box furnace.

[0016] Optionally, the catalyst preparation unit includes a rotary calciner, a feed tank and a storage tank, the rotary calciner and the storage tank are both provided with the gas inlet and the gas outlet, the two gas pipelines connected to the two gas inlets are respectively provided with a first control valve, the two exhaust pipelines connected to the two gas outlets are respectively provided with a second control valve, the outlet of the feed tank is connected to the feed inlet of the storage tank through a first feed pipeline, and a fourth control valve is provided on the first feed pipeline, the outlet of the storage tank is connected to the feed inlet of the rotary calciner through a second feed pipeline, and a fifth control valve is provided on the second feed pipeline.

[0017] Optionally, the catalyst preparation unit comprises a heater, a spray tower and a separator which are connected in sequence, a gas inlet of the catalyst preparation unit is arranged on the heater, and a gas outlet of the catalyst preparation unit is arranged on the separator.

[0018] Optionally, the catalyst preparation unit further comprises a connecting pipe connecting the gas inlet and the gas outlet of the catalyst preparation unit, and a sixth control valve is provided on the connecting pipe.

[0019] Another aspect of the present invention provides a method for preparing a catalyst, comprising the following steps:

[0020] S1. Using a predetermined gas to replace the atmosphere in the catalyst preparation unit;

[0021] S2, monitoring the tail gas discharged from the catalyst preparation unit, and regulating the atmosphere in the catalyst preparation unit according to the monitoring result;

[0022] S3. Treating tail gas discharged from the catalyst preparation unit.

[0023] Optionally, the catalyst preparation method further comprises the following steps:

[0024] S4. During the process of preparing the catalyst by the catalyst preparation unit, the tail gas discharged from the catalyst preparation unit is circulated into the catalyst preparation unit.

[0025] Optionally, the catalyst preparation method is carried out using the above-mentioned catalyst preparation device.

[0026] The catalyst preparation device of the present invention realizes the atmosphere adjustable function in the catalyst preparation process through the above-mentioned technical scheme, so that the catalyst preparation process can be carried out under different atmosphere environments. In addition, by realizing the exhaust gas monitoring of the whole process to determine the atmosphere conditions in the catalyst preparation unit, the product controllability and safety of the preparation process can be improved, and the product quality can be optimized.

[0027] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 is a schematic diagram of an embodiment of a catalyst preparation device of the present invention;

[0030] Figure 2 is a schematic diagram of another embodiment of the catalyst preparation device of the present invention;

[0031] Figure 3 It is a schematic diagram of another embodiment of the catalyst preparation device of the present invention.

[0032] Description of Reference Numerals

[0033] 10-gas pipeline, 11-flow meter, 12-first control valve, 20-exhaust pipeline, 21-water seal system, 22-second control valve, 23-induced draft fan, 30-monitoring pipeline, 31-air bag, 32-third control valve, 40a-medium temperature atmosphere box furnace, 40b-rotary roasting furnace, 40c-heater, 41b-feed tank, 41c-spray tower, 42b-storage tank, 42c-separator, 43-first feed pipeline, 431-fourth control valve, 44-second feed pipeline, 441-fifth control valve, 45-connecting pipeline, 451-sixth control valve, 46-discharge pipeline, 461-seventh control valve. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions within the scope of the claims.

[0035] The present invention provides these embodiments to make the present invention thorough and complete, and fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as being merely exemplary, rather than as limiting.

[0036] It should be noted that, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0037] In addition, the words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly perpendicular, but is within the tolerance range. "Parallel" is not strictly parallel, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0038] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0039] All terms used in the present invention have the same meanings as those understood by ordinary technicians in the field to which the present invention belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0040] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0041] In one aspect, the present invention provides a catalyst preparation device, comprising:

[0042] A catalyst preparation unit, the catalyst preparation unit is used to prepare a catalyst under a predetermined atmosphere and has a gas inlet and a gas outlet;

[0043] A gas regulating unit, the gas regulating unit being in communication with the gas inlet of the catalyst preparation unit for regulating the atmosphere in the catalyst preparation unit;

[0044] an exhaust gas monitoring unit, the exhaust gas monitoring unit being in communication with a gas outlet of the catalyst preparation unit to monitor the exhaust gas discharged from the gas outlet; and

[0045] A tail gas treatment unit is connected to the gas outlet of the catalyst preparation unit to treat the tail gas discharged from the gas outlet.

[0046] When the above-mentioned catalyst preparation device is in use, the gas in the catalyst preparation unit can first be replaced with a predetermined gas (such as nitrogen, hydrogen, oxygen-enriched gas, etc.) through the gas control unit. During the replacement process, the monitoring results of the exhaust gas monitoring unit can be used to confirm whether the gas in the catalyst preparation unit is completely replaced; thereafter, the catalyst can be prepared through the catalyst preparation unit. During the preparation process, the atmosphere in the catalyst preparation unit can be timely controlled according to the exhaust gas monitoring results. The exhaust gas generated during the preparation process can be treated by the exhaust gas treatment unit to ensure safe discharge.

[0047] The exhaust gas monitoring unit is understood to be used to monitor the components and content of the exhaust gas.

[0048] The catalyst preparation device of the present invention realizes the atmosphere adjustable function in the catalyst preparation process through the above-mentioned technical scheme, so that the catalyst preparation process can be carried out under different atmosphere environments. In addition, by realizing the exhaust gas monitoring of the whole process to determine the atmosphere conditions in the catalyst preparation unit, the product controllability and safety of the preparation process can be improved, and the product quality can be optimized.

[0049] Compared with the prior art, the catalyst preparation device of the present invention, by setting a gas control unit, an exhaust gas monitoring unit and an exhaust gas treatment unit, does not need to replace a specific preparation device according to different atmosphere environment requirements. It can realize the control of multiple atmosphere environments on the basis of the existing preparation device, and can monitor the atmosphere conditions in the preparation device to adjust them, thereby improving the controllability and safety of producing catalyst products, and ultimately improving the quality of catalyst products.

[0050] It should be noted that the gas control unit, the exhaust gas monitoring unit and the exhaust gas treatment unit in the present invention can have a variety of implementations as long as they can achieve the above functions.

[0051] In some embodiments, the gas control unit may include a gas pipeline 10 having one end connected to the gas inlet, a flow meter 11 and a first control valve 12 arranged on the gas pipeline 10, and the other end of the gas pipeline 10 is used to be connected to a predetermined atmosphere source. In other words, the other end of the gas pipeline 10 can be selectively connected to a variety of different atmosphere sources. Among them, the first control valve 12 can be used to control the on and off of the gas pipeline 10, and the flow meter 11 can be used to monitor and control the gas flow in the gas pipeline 10. During use, ventilation is controlled by opening or closing the first control valve 12, and the gas flow in the gas pipeline 10 is controlled by adjusting the flow meter 11.

[0052] In some embodiments, the exhaust gas treatment unit may include an exhaust pipe 20 connected to the gas outlet at one end, a water seal system 21 connected to the other end of the exhaust pipe 20, and a second control valve 22 arranged on the exhaust pipe 20, and the second control valve 22 can control the on and off of the exhaust pipe 20. Among them, the water seal system 21 can isolate the gas in the exhaust pipe 20 from the outside air, and the gas in the exhaust pipe 20 can also be discharged by adjusting the distance between the outlet end of the exhaust pipe and the liquid level in the water seal system 21. That is to say, during the atmosphere replacement process of the catalyst preparation unit, the exhaust gas (usually air) can be discharged to the outside; during the preparation process of the catalyst preparation unit, the exhaust gas (which may contain polluted gas) can be absorbed and treated by the water seal system 21, and the corresponding treatment agent can be added to the water seal system 21. Since the water seal system belongs to the prior art, and the improvement of the present invention does not lie in the water seal system, the water seal system will not be described in detail.

[0053] In the present invention, in order to prevent the exhaust gas from flowing back, the second control valve 22 may be a one-way valve.

[0054] In some embodiments, the exhaust gas monitoring unit may include a monitoring pipe 30 connected to the exhaust pipe 20 at one end, an air bag 31 connected to the other end of the monitoring pipe 30, and a third control valve 32 arranged on the monitoring pipe 31, and the end of the monitoring pipe 30 connected to the exhaust pipe 20 is located upstream of the second control valve 22. Among them, the third control valve 32 can control the on-off of the monitoring pipe 30. The air bag 31 is used for exhaust gas sampling. After the sampling is completed, the gas component detection device can be used to detect the components and content of the exhaust gas to determine the atmosphere environment in the catalyst preparation unit. In other words, the exhaust gas monitoring unit may also include a gas component detection device. Since the gas component detection device belongs to the prior art, and the improvement of the present invention does not lie in the gas component detection device, the gas component detection device will not be described in detail.

[0055] When in use, exhaust gas monitoring or exhaust gas treatment can be performed by adjusting the on-off of the second control valve 22 and the third control valve 32 .

[0056] Of course, in some embodiments, in order to facilitate gas replacement or the catalyst preparation device needs to operate at full negative pressure, an induced draft fan 23 may also be provided on the exhaust duct 20 .

[0057] In the present invention, the catalyst preparation unit can be used to calcine or dry the catalyst.

[0058] In the scheme of calcining the catalyst, in some embodiments, see Figure 1The catalyst preparation unit may include a medium-temperature atmosphere box furnace 40a, and the gas inlet and gas outlet of the catalyst preparation unit are arranged on the medium-temperature atmosphere box furnace 40a. When in use, the catalyst material may be first placed in the medium-temperature atmosphere box furnace 40a, and then the atmosphere in the furnace may be regulated.

[0059] In other embodiments, see Figure 2 The catalyst preparation unit may include a rotary roasting furnace 40b, a feed tank 41b and a storage tank 42b, wherein the rotary roasting furnace 40b and the storage tank 42b are both provided with the gas inlet and the gas outlet, and the two gas pipelines 10 connected to the two gas inlets are respectively provided with a first control valve 12, and the two exhaust pipelines 20 connected to the two gas outlets are respectively provided with a second control valve 22, the discharge port of the feed tank 41b is connected to the feed port of the storage tank 42b through a first feed pipeline 43, and a fourth control valve 431 is provided on the first feed pipeline 43, and the discharge port of the storage tank 42b is connected to the feed port of the rotary roasting furnace 40b through a second feed pipeline 44, and a fifth control valve 441 is provided on the second feed pipeline 44. Among them, the fourth control valve 431 is used to control the on-off of the first feed pipeline 43, and the fifth control valve 441 is used to control the on-off of the second feed pipeline 44. In this embodiment, continuous feeding and discharging of catalyst materials can be achieved. The storage tank 42b is a sealed tank, and by connecting the corresponding gas pipeline and exhaust pipeline, the gas in the tank can be replaced, and the material in the tank can be sent into the rotary roasting furnace 40b under the dual effects of gravity and gas pressure, which ensures the safety of roasting and improves product quality.

[0060] In the above, the discharge port of the rotary roasting furnace 40b may be connected to a discharge pipe 46, and the discharge pipe 46 may be provided with a seventh control valve 461 for controlling the on-off thereof.

[0061] In the scheme of drying the catalyst, in some embodiments, see Figure 3, the catalyst preparation unit may include a heater 40c, a spray tower 41c and a separator 42c connected in sequence, the gas inlet of the catalyst preparation unit is arranged on the heater 40c, and the gas outlet of the catalyst preparation unit is arranged on the separator 42c. It is conceivable that the gas inlet is connected to the gas pipeline 10, and the gas outlet is connected to the exhaust pipeline 20 and the monitoring pipeline 30, as described above. Among them, the heater 40c, the spray tower 41c and the separator 42c are fluidly connected, that is, when the gas pipeline 10 is ventilated, the atmosphere environment in the heater 40c, the spray tower 41c and the separator 42c can be regulated at the same time. Among them, the heater 40c is used to heat the predetermined gas, the spray tower 41c is used to make the catalyst material form a mist, and the separator 42c is used to separate the material and the tail gas, and the separated material can be discharged through the discharge port for packaging, and the separated tail gas is discharged through the gas outlet. The separator 42c can be a cyclone separator. In this embodiment, after the atmosphere replacement in the catalyst preparation unit is completed, a sealed feeding device can be used to perform sealed and continuous feeding into the spray tower 41c.

[0062] In the above, the discharge port of the separator 42c may be connected to a discharge pipe 46, and the discharge pipe 46 may be provided with a seventh control valve 461 for controlling the on-off thereof.

[0063] In the present invention, in order to reduce energy consumption and realize energy recycling, in some embodiments, the catalyst preparation unit may further include a connecting pipe 45 connecting the gas inlet and the gas outlet of the catalyst preparation unit, and a sixth control valve 451 is provided on the connecting pipe 45, and the sixth control valve 451 is used to control the on-off of the connecting pipe 45. By providing the connecting pipe 45, during the preparation process of the catalyst, the tail gas discharged from the gas outlet can be circulated to the catalyst preparation unit through the gas inlet to realize the recycling of the tail gas.

[0064] Another aspect of the present invention provides a method for preparing a catalyst, comprising the following steps:

[0065] S1. Using a predetermined gas to replace the atmosphere in the catalyst preparation unit;

[0066] S2, monitoring the tail gas discharged from the catalyst preparation unit, and regulating the atmosphere in the catalyst preparation unit according to the monitoring result;

[0067] S3. Treating tail gas discharged from the catalyst preparation unit.

[0068] In the present invention, in order to reduce energy consumption and realize energy recycling, in some embodiments, the catalyst preparation method further includes the following steps:

[0069] S4. During the process of preparing the catalyst by the catalyst preparation unit, the tail gas discharged from the catalyst preparation unit is circulated into the catalyst preparation unit.

[0070] The catalyst preparation method can be carried out using the above-mentioned catalyst preparation device.

[0071] Combine the following Figure 1-Figure 3 , the present invention is described in detail through embodiments.

[0072] Example 1

[0073] like Figure 1 As shown, first, the atmosphere in the medium-temperature atmosphere box furnace 40a is replaced. The specific operation is: open the first control valve 12 and the second control valve 22, close the third control valve 32, and use the gas pipeline 10 to pass the predetermined gas into the medium-temperature atmosphere box furnace 40a to replace the gas in the furnace. The replaced exhaust gas is discharged to the outside through the exhaust pipe 20. After the gas is replaced for a period of time (for example, 0.5h), close the second control valve 22, open the third control valve 32, so that the exhaust gas is transported to the airbag 31 through the monitoring pipe 30, and use the exhaust gas to replace the remaining air in the airbag 31 several times (for example, three times). After the replacement is completed, use the airbag 31 to sample the exhaust gas and detect the exhaust gas components and their content. Repeat this until the test result is qualified (that is, the gas in the exhaust gas reaches the required atmosphere environment).

[0074] Then, the catalyst is roasted, and the specific operation is: start the heating program of the medium temperature atmosphere box furnace 40a to heat up, realize the catalyst roasting under the predetermined atmosphere, and at the same time open the second control valve 22, close the third control valve 32, and let the tail gas enter the water seal system 21 for treatment. During the gas replacement and catalyst roasting process, the flow meter 11 and the first control valve 12 can be used to control the atmosphere in the medium temperature atmosphere box furnace 40a according to the tail gas monitoring results.

[0075] Example 2

[0076] like Figure 2As shown, first, the gas in the rotary roasting furnace 40b is replaced. The specific operation is: open the first control valve 12 and the second control valve 22 corresponding to the rotary roasting furnace 40b, and close the other control valves. Use the gas pipeline 10 connected to the rotary roasting furnace 40b to pass the predetermined gas into the rotary roasting furnace 40b to replace the gas in the furnace. The replaced exhaust gas is discharged to the outside through the corresponding exhaust pipe 20. After the gas is replaced for a period of time (for example, 0.5h), close the corresponding second control valve 22, open the third control valve 32, so that the exhaust gas is transported to the airbag 31 through the monitoring pipe 30, and use the exhaust gas to replace the remaining air in the airbag 31 for several times (for example, three times). After the replacement is completed, use the airbag 31 to sample the exhaust gas and detect the exhaust gas components and their content. Repeat this process until the test results are qualified.

[0077] Secondly, replace the gas in the storage tank 42b. The specific operation is as follows: pour the material into the feed tank 41b, open the fourth control valve 431 and the corresponding second control valve 22, and after the material enters the storage tank 42b, close the fourth control valve 431 to put the material in a closed environment, open the corresponding first control valve 12, and use the gas pipeline 10 connected to the storage tank 42b to pass the predetermined gas into the storage tank 42b to replace the gas in the tank. The replaced exhaust gas is discharged to the outside through the exhaust pipe 20 connected to the storage tank 42b. During the replacement process, the corresponding second control valve 22 is opened intermittently and slowly, and after repeating three to four times, the corresponding second control valve 22 is closed to complete the gas replacement.

[0078] Finally, the catalyst is roasted. The specific operation is as follows: close the first control valve 12 and the fifth control valve 441 corresponding to the storage tank 42b, open the second control valve 22 corresponding to the storage tank 42b, and after the pressure relief balance pressure in the storage tank 42b is exhausted, close the corresponding second control valve 22. Open the fifth control valve 441, and the material is continuously transported to the rotary roasting furnace 40b for roasting under the dual effects of gravity and gas pressure. During the roasting process, open the first control valve 12 and the second control valve 22 corresponding to the roasting furnace, so that the tail gas continuously enters the water seal system 21 for treatment. When the roasted material in the furnace runs to the discharge end of the roasting furnace, open the seventh control valve 461 to continuously pack the material.

[0079] During the process of gas replacement and catalyst roasting, the atmosphere in the rotary roasting furnace 40b can be regulated by using the flow meter 11 and the first control valve 12 according to the exhaust gas monitoring result.

[0080] Example 3

[0081] like Figure 3As shown, first, replace the gas, the specific operation is: open the first control valve 12 and the second control valve 22, and open the induced draft fan 23, close the third control valve 32, the sixth control valve 451 and the seventh control valve 461, use the gas pipeline 10 to pass the predetermined gas into the spray tower 41c to replace the gas in the tower, the replaced exhaust gas enters the separator 42c and is discharged to the outside through the exhaust pipe 20 by the induced draft fan 23, after the gas is replaced for a period of time (for example, 0.5h), close the second control valve 22, open the third control valve 32, so that the exhaust gas is transported to the airbag 31 through the monitoring pipe 30, use the exhaust gas to replace the remaining air in the airbag 31 for several times (for example, three times), after the replacement is completed, use the airbag 31 to sample the exhaust gas and detect the exhaust gas components and their content, and repeat this until the test results are qualified.

[0082] Then, the catalyst is dried. The specific operation is as follows: the material is continuously put into the spray tower 41c from the top of the spray tower 41c in a sealed manner, the atomizing wheel rotates at a high speed to form the material into a mist, the gas in the gas pipeline 10 is heated by the heater 40c and is dried instantly after contacting the mist material, the dry material and the tail gas are drawn by the induced draft fan 23, and enter the separator 42c together, the material and the tail gas are separated, the seventh control valve 461 is opened, the separated material is packaged, and the tail gas is discharged into the water seal system 21 through the induced draft fan 23, the exhaust pipeline 20, and the second control valve 22. During the drying process, the first control valve 12, the second control valve 22, and the third control valve 32 can be closed, and the sixth control valve 451 can be opened to circulate the tail gas to the gas pipeline, heat it in the heater, and then enter the spray tower 41c, and the tail gas is recycled and utilized to achieve gas recycling.

[0083] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0084] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A catalyst preparation device, characterized in that: include: A catalyst preparation unit, the catalyst preparation unit is used to prepare a catalyst under a predetermined atmosphere and has a gas inlet and a gas outlet; A gas regulating unit, the gas regulating unit being in communication with the gas inlet of the catalyst preparation unit for regulating the atmosphere in the catalyst preparation unit; an exhaust gas monitoring unit, the exhaust gas monitoring unit being in communication with a gas outlet of the catalyst preparation unit to monitor the exhaust gas discharged from the gas outlet; and A tail gas treatment unit is connected to the gas outlet of the catalyst preparation unit to treat the tail gas discharged from the gas outlet.

2. The catalyst preparation device according to claim 1, characterized in that: The gas control unit comprises a gas pipeline (10) whose one end is connected to the gas inlet, and a flow meter (11) and a first control valve (12) arranged on the gas pipeline (10); the other end of the gas pipeline (10) is used to be connected to a predetermined atmosphere source; and / or The exhaust gas treatment unit comprises an exhaust pipe (20) having one end connected to the gas outlet, a water seal system (21) connected to the other end of the exhaust pipe (20), and a second control valve (22) arranged on the exhaust pipe (20).

3. The catalyst preparation device according to claim 2, characterized in that: The exhaust gas monitoring unit comprises a monitoring pipe (30) having one end connected to the exhaust pipe (20), an air bag (31) connected to the other end of the monitoring pipe (30), and a third control valve (32) arranged on the monitoring pipe (31), wherein the one end of the monitoring pipe (30) is located upstream of the second control valve (22); and / or The second control valve (22) is a one-way valve, and an induced draft fan (23) is provided on the exhaust pipe (20).

4. The catalyst preparation device according to any one of claims 1 to 3, characterized in that: The catalyst preparation unit is used to calcine or dry the catalyst.

5. The catalyst preparation device according to claim 4, characterized in that: The catalyst preparation unit comprises a medium-temperature atmosphere box-type furnace (40a), and a gas inlet and a gas outlet of the catalyst preparation unit are arranged on the medium-temperature atmosphere box-type furnace (40a); or The catalyst preparation unit comprises a rotary calcining furnace (40b), a feed tank (41b) and a storage tank (42b), the rotary calcining furnace (40b) and the storage tank (42b) are both provided with the gas inlet and the gas outlet, two gas pipelines (10) connected to the two gas inlets are respectively provided with a first control valve (12), two exhaust pipelines (20) connected to the two gas outlets are respectively provided with a second control valve (22), the discharge port of the feed tank (41b) is connected to the feed port of the storage tank (42b) via a first feed pipeline (43), and a fourth control valve (431) is provided on the first feed pipeline (43), the discharge port of the storage tank (42b) is connected to the feed port of the rotary calcining furnace (40b) via a second feed pipeline (44), and a fifth control valve (441) is provided on the second feed pipeline (44).

6. The catalyst preparation device according to claim 4, characterized in that: The catalyst preparation unit comprises a heater (40c), a spray tower (41c) and a separator (42c) which are connected in sequence. The gas inlet of the catalyst preparation unit is arranged on the heater (40c), and the gas outlet of the catalyst preparation unit is arranged on the separator (42c).

7. The catalyst preparation device according to claim 6, characterized in that: The catalyst preparation unit further comprises a connecting pipe (45) connecting the gas inlet and the gas outlet of the catalyst preparation unit, and a sixth control valve (451) is arranged on the connecting pipe (45).

8. A method for preparing a catalyst, characterized in that: The following steps are involved: S1. Using a predetermined gas to replace the atmosphere in the catalyst preparation unit; S2, monitoring the tail gas discharged from the catalyst preparation unit, and regulating the atmosphere in the catalyst preparation unit according to the monitoring result; S3. Treating tail gas discharged from the catalyst preparation unit.

9. The method for preparing a catalyst according to claim 8, characterized in that: The catalyst preparation method further comprises the following steps: S4. During the process of preparing the catalyst by the catalyst preparation unit, the tail gas discharged from the catalyst preparation unit is circulated into the catalyst preparation unit.

10. The method for preparing a catalyst according to claim 8 or 9, characterized in that: The catalyst preparation method is carried out using the catalyst preparation device described in any one of claims 1-7.

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