2-ethyl anthraquinone crude product finish machining device

Abstract

The utility model relates to the technical field of purification devices, in particular to a 2-ethyl anthraquinone crude product finish machining device which comprises an alkali adding kettle, a climbing film evaporator, a condenser, a finished product storage tank, a high-position finished product tank and a stock bin which are connected in sequence. A feeding port of the condensation crystallization slicing machine is connected with a discharging port of the high-position finished product tank through a pipeline, an overflow port is formed in one side of the climbing film evaporator and connected with an anti-overflow device through a pipeline, and an exhaust port is formed in one side of the top of the condenser and connected with a non-condensable gas treatment device through a pipeline. 2-ethylanthraquinone condensed by the condenser is finally stored in the high-level finished product tank to form a 2-ethylanthraquinone refined product, the condensation crystallization slicer condenses and crystallizes materials in the high-level finished product tank, regular crystals are obtained through slicing treatment, and the crystals are stored in the stock bin, so that the requirements of specific application fields on solid products are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to purification device technical field especially relates to a 2 -ethyl anthraquinone crude product finishing device. BACKGROUND

[0002] 2-ethyl anthraquinone is an important organic synthesis intermediate, mainly used in the manufacture of hydrogen peroxide, also used in medicine, dye intermediate, photocuring resin catalyst, photodegradation membrane, coating and photosensitive polymerization initiator. At present, domestic and foreign large hydrogen peroxide manufacturers all adopt anthraquinone method to manufacture hydrogen peroxide, and the demand of domestic hydrogen peroxide industry accounts for more than 90% of 2-ethyl anthraquinone production capacity. The yield and quality of 2-ethyl anthraquinone greatly affect the development of hydrogen peroxide manufacturing and related industries.

[0003] The utility model discloses a 2-ethyl anthraquinone rectification purification system discloses a 2-ethyl anthraquinone rectification purification system, including: heater, rectification pipeline, rectification tower, second pump body and sedimentation chamber, the left side of heater is connected and is disposed with raw material feed inlet, the central place of rectification pipeline is disposed with first pump body, and rectification pipeline is connected with the inside of rectification tower, and one end of rectification tower is disposed in the central of heating water tank, and the upper end of rectification tower is connected with condenser pipe, and the central place of rectification tower is connected with second pump body, and the center of second pump body is provided with waste material circulation pipe, and second pump body is disposed in the bottom central place of sedimentation chamber, and the right end of sedimentation chamber is connected with discharge pipe.

[0004] The system removes impurities in the crude product through heating, rectification, condensation and sedimentation, and obtains relatively pure 2-ethyl anthraquinone. However, the 2-ethyl anthraquinone produced by the system is usually in liquid state, which limits its use in certain specific application fields to some extent, especially in occasions requiring solid form products. SUMMARY

[0005] The utility model discloses a kind of 2-ethyl anthraquinone crude product finishing device capable of producing solid form.

[0006] In order to solve the above technical problems, the technical scheme adopted by the utility model is: an ethyl anthraquinone crude product finishing device includes, in sequence along the raw material refining process, an alkali addition kettle, a climbing film evaporator, a condenser, a finished product storage tank, a high-level finished product tank and a bin. A condensation crystallization slicer is arranged above the bin. A feed inlet of the condensation crystallization slicer is connected to a discharge outlet of the high-level finished product tank via a pipeline. An overflow port is arranged on one side of the climbing film evaporator. The overflow port is connected to an anti-overflow device via a pipeline. An exhaust port is arranged on one side of the top of the condenser. The exhaust port is connected to a non-condensable gas treatment device via a pipeline.

[0007] Preferably, the anti-overflow device comprises a residue kettle and a scraper evaporator, one side of the middle part of the climbing film evaporator is provided with a gas collecting port, the gas collecting port is connected with the gas outlet of the scraper evaporator through a steam pipeline, the feed inlet of the scraper evaporator is connected with the overflow port through an overflow pipeline, and the liquid discharge port of the scraper evaporator and the liquid discharge port of the climbing film evaporator are both connected with the residue kettle through pipelines.

[0008] Preferably, the non-condensable gas treatment device comprises a cold well, a first bag-type dust collector, a second bag-type dust collector and a Roots vacuum pump group connected in sequence along a gas treatment route, and the gas inlet of the cold well is connected with the gas outlet of the residue kettle and the exhaust port of the condenser through pipelines respectively.

[0009] Preferably, a fine dust removal device is connected between the first bag-type dust collector and the second bag-type dust collector.

[0010] Preferably, the fine dust removal device comprises an oil dust collector, an oil circulating tank and an oil circulating pump, the gas outlet of the first bag-type dust collector is connected with the gas inlet of the oil dust collector through a pipeline, the gas outlet of the oil dust collector is connected with the gas inlet of the second bag-type dust collector through a pipeline, the inner top of the oil dust collector is provided with a liquid distribution device, the bottom of the oil dust collector is provided with a liquid outlet, the liquid outlet is connected with the input end of the oil circulating pump through a pipeline, and the output end of the oil circulating pump is connected with the liquid distribution device through a pipeline.

[0011] Preferably, a negative pressure device connected with a finished product storage tank and a high-level finished product tank is further included.

[0012] Preferably, the negative pressure device comprises a water jet vacuum unit, and the suction end of the water jet vacuum unit is connected with the finished product storage tank and the high-level finished product tank through pipelines respectively.

[0013] Preferably, the liquid discharge port of the condensation and crystallization slicing machine is connected with a backflow storage tank through a pipeline, and the backflow storage tank is connected with the high-level finished product tank through a pipeline.

[0014] After the above technical scheme is adopted, the beneficial effects of the present application are as follows:

[0015] 2-ethylanthraquinone crude product is mixed with lye in the alkali adding kettle, 2-ethylanthraquinone is evaporated through heating and evaporation of the climbing film evaporator, 2-ethylanthraquinone after condensation treatment is finally stored in the high-level finished product tank to form 2-ethylanthraquinone fine product, the condensation and crystallization slicing machine performs condensation and crystallization on the material in the high-level finished product tank, and regular crystals are obtained through slicing treatment and are stored in the material bin, so as to meet the demand of a specific application field for solid products. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] In the figure: 1 - alkali kettle, 2 - climbing film evaporator, 3 - water injection vacuum unit, 4 - steam pipeline, 5 - overflow pipe, 6 - condenser, 7 - finished product storage tank, 8 - high finished product tank, 9 - condensation crystallization slicer, 10 - silo, 11 - reflux storage tank, 12 - Roots vacuum pump set, 13 - second bag-type dust collector, 14 - oil removal circulating pump, 15 - oil circulating tank, 16 - oil dust collector, 17 - first bag-type dust collector, 18 - cold well, 19 - residue kettle, 20 - scraper evaporator. DETAILED DESCRIPTION

[0019] The features and exemplary embodiments of each aspect of the present application will be described in detail below, in order to make the purpose, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application, and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0020] The orientation words appearing in the following description are the directions shown in the figure, and are not limited to the specific structure of the present application. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected or integrally connected; it can be directly connected, or it can be indirectly connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The embodiment of the utility model provides a kind of ethyl anthraquinone crude product finishing device, along raw material refining process design, including sequentially connected alkali kettle 1, lift film evaporator 2, condenser 6, finished product storage tank 7 (as buffer and storage container, for temporarily storing after condensation 2-ethylanthraquinone), high finished product tank 8 and bunker 10.Cold condensation crystallization slicer 9 is provided in the upper portion of bunker 10, and the feed inlet of cold condensation crystallization slicer 9 is connected with the discharge port of high finished product tank 8 by pipeline, so that the product output from high finished product tank 8 can directly enter cold condensation crystallization slicer 9 to carry out condensation crystallization and slicing processing.Finally, refined 2-ethylanthraquinone product is sent into bunker 10 to store or prepare packaging.

[0022] The liquid outlet of condensation crystallization slicer 9 is connected with reflux storage tank 11 by pipeline, and the reflux storage tank 11 is connected with high finished product tank 8 by pipeline.In the slicing process, 2-ethylanthraquinone fine that is not completely condensed and crystallized enters reflux storage tank 11 for temporary storage through the liquid outlet of condensation crystallization slicer 9.When needed, these 2-ethylanthraquinone fine is pumped into high finished product tank 8 again, mixed with new 2-ethylanthraquinone fine, and then subjected to slicing processing again.This circulating loop not only improves the utilization rate of raw materials, but also improves the purity of the final product.

[0023] One side of lift film evaporator 2 is provided with overflow port, and the overflow port is connected with overflow prevention device by pipeline, and the overflow prevention device includes residue kettle 19 and scraper evaporator 20.The middle side of lift film evaporator 2 is provided with gas collection port, and the gas collection port is connected with the gas outlet of scraper evaporator 20 by steam pipeline 4, the feed inlet of scraper evaporator 20 is connected with overflow port by overflow pipe 5, and the liquid outlet of scraper evaporator 20 and the liquid outlet of lift film evaporator 2 are connected with residue kettle 19 by pipeline.

[0024] When the 2-ethylanthraquinone crude product in lift film evaporator 2 reaches the preset liquid level, the excess material will enter scraper evaporator 20 through the overflow port to ensure that lift film evaporator 2 will not be overloaded.In scraper evaporator 20, 2-ethylanthraquinone crude product solution is evaporated to form gaseous 2-ethylanthraquinone, and the gaseous 2-ethylanthraquinone is collected into lift film evaporator 2 through steam pipeline 4, mixed with the gaseous 2-ethylanthraquinone formed by lift film evaporator 2, and finally sent to condenser 6 for condensation treatment.2-ethylanthraquinone crude product solution is heated in scraper evaporator 20 and gradually converted into gaseous 2-ethylanthraquinone.

[0025] As evaporation proceeds, the concentration of impurities in scraper evaporator 20 (or lift film evaporator 2) gradually increases, and finally forms residue containing high-concentration impurities.The residue containing high-concentration impurities is collected and stored in residue kettle 19, and the residue in residue kettle 19 is temporarily stored as hazardous waste, which needs to be disposed by a qualified unit.

[0026] The ethyl anthraquinone crude product finishing device further comprises a negative pressure device, the negative pressure device comprises a water jet vacuum unit 3, and the suction end of the water jet vacuum unit 3 is connected to the finished product storage tank 7 and the high-level finished product tank 8 through pipelines respectively. The water jet vacuum unit 3 provides power for the conveying of the material by generating a negative pressure environment. For example, when the high-level finished product tank 8 is in a negative pressure state and the finished product storage tank 7 is in a normal pressure state, due to the pressure difference, the material in the finished product storage tank 7 is sucked into the high-level finished product tank 8 under the action of the negative pressure.

[0027] An exhaust port is arranged on one side of the top of the condenser 6, and a non-condensable gas treatment device is connected to the exhaust port through a pipeline. The non-condensable gas treatment device comprises, in sequence along a gas treatment route, a cold well 18, a first bag-type dust collector 17, a second bag-type dust collector 13 and a Roots vacuum pump set 12, and the gas inlet of the cold well 18 is connected to the gas outlet of the residue kettle 19 and the exhaust port of the condenser 6 through pipelines respectively.

[0028] The dust removal capacity of the first bag-type dust collector 17 and the second bag-type dust collector 13 is limited, and only larger particles can be removed, and finer particles cannot be filtered out. In order to protect the Roots vacuum pump set 12, a fine dust removal device is connected between the first bag-type dust collector 17 and the second bag-type dust collector 13. The fine dust removal device comprises an oil dust collector 16, an oil circulation tank 15 and an oil circulation pump 14. The gas outlet of the first bag-type dust collector 17 is connected to the gas inlet of the oil dust collector 16 through a pipeline, and the gas outlet of the oil dust collector 16 is connected to the gas inlet of the second bag-type dust collector 13 through a pipeline. The inner top of the oil dust collector 16 is provided with a liquid distribution device, and the bottom of the oil dust collector 16 is provided with a liquid outlet, the liquid outlet is connected to the input end of the oil circulation pump 14 through a pipeline, and the output end of the oil circulation pump 14 is connected to the liquid distribution device through a pipeline.

[0029] During dust removal, the oil circulation pump 14 pumps the oil in the oil circulation tank 15 into the liquid distribution device in the oil dust collector 16. The oil mist formed by the liquid distribution device through spraying collides with the particle impurities in the gas and adheres to them, achieving the removal of fine particles. The oil liquid entraining the particles flows out from the bottom of the oil dust collector 16, is filtered and then sent back to the oil circulation tank 15, realizing the recycling of the oil.

[0030] The mixed solution (2-ethyl anthraquinone crude solution) is pumped into the alkali adding kettle 1, then 0.2% of the crude product is added into the alkali adding kettle 1, and the temperature of the alkali adding kettle 1 is controlled at 150℃. The mixed solution in the alkali adding kettle 1 is sent into the rising film evaporator 2 for film forming, and the temperature is controlled at 160℃. The mixed solution exceeding the set liquid level height overflows into the scraped plate evaporator 20, and the temperature is controlled at 200℃. The gaseous phase 2-ethyl anthraquinone evaporated by the scraped plate evaporator 20 is collected into the gaseous phase 2-ethyl anthraquinone in the rising film evaporator 2 through the steam pipeline 4, the gaseous phase 2-ethyl anthraquinone is condensed by the condenser 6, and the condensed liquid in the high-level finished product tank 8 is transported to the condensation crystallization slicing machine 9 for slicing, forming solid 2-ethyl anthraquinone fine products.

[0031] In accordance with the embodiments of the present application as described above, the embodiments do not describe all the details, nor limit the present application to the specific embodiments. Obviously, many modifications and variations are possible in light of the above teachings. The embodiments were chosen and described in order to provide the best illustration of the principles of the present application and its practical application, and to thereby enable one of ordinary skill in the art to utilize the present application in various embodiments and with various modifications being suited to the particular use contemplated. All such modifications and variations are within the scope of the present application as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably susceptible.

Claims

1. A device for refining crude 2-ethylanthraquinone, characterized in that: Along the raw material refining process, including the alkali kettle (1) connected in turn, the climbing film evaporator (2), the condenser (6), the finished product tank (7), the high finished product tank (8) and the stock bin (10), the top of the stock bin (10) is provided with a condensation crystallization slicing machine (9), the feed inlet of the condensation crystallization slicing machine (9) is connected with the discharge port of the high finished product tank (8) through a pipeline, one side of the climbing film evaporator (2) is provided with an overflow port, the overflow port is connected with an anti-overflow device through a pipeline, one side of the top of the condenser (6) is provided with a gas outlet, and the gas outlet is connected with a non-condensable gas treatment device through a pipeline.

2. The 2-ethylanthraquinone crude polishing apparatus according to claim 1, characterized by: The anti-overflow device comprises a residue kettle (19) and a scraper evaporator (20), one side of the middle part of the climbing film evaporator (2) is provided with a gas collecting port, the gas collecting port is connected with the gas outlet of the scraper evaporator (20) through a steam pipeline (4), the feed inlet of the scraper evaporator (20) is connected with the overflow port through an overflow pipe (5), and the liquid discharge port of the scraper evaporator (20) and the liquid discharge port of the climbing film evaporator (2) are connected with the residue kettle (19) through pipelines.

3. The 2-ethylanthraquinone crude polishing apparatus according to claim 2, characterized by: The non-condensable gas treatment device comprises a cold well (18), a first bag dust collector (17), a second bag dust collector (13) and a Roots vacuum pump set (12) connected in turn along the gas treatment route, and the gas inlets of the cold well (18) are connected with the gas outlets of the residue kettle (19) and the condenser (6) respectively through pipelines.

4. The ethyl anthraquinone crude polishing apparatus according to claim 3, characterized by: The first bag dust collector (17) and the second bag dust collector (13) are connected with a fine dust removal device.

5. The 2-ethylanthraquinone crude polishing apparatus according to claim 4, characterized by: The fine dust removal device comprises an oil dust remover (16), an oil circulating tank (15) and an oil circulating pump (14), the gas outlet of the first bag dust collector (17) is connected with the gas inlet of the oil dust remover (16) through a pipeline, the gas outlet of the oil dust remover (16) is connected with the gas inlet of the second bag dust collector (13) through a pipeline, the inner top of the oil dust remover (16) is provided with a liquid distributor, the bottom of the oil dust remover (16) is provided with a liquid outlet, the liquid outlet is connected with the input end of the oil circulating pump (14) through a pipeline, and the output end of the oil circulating pump (14) is connected with the liquid distributor through a pipeline.

6. The 2-ethylanthraquinone crude polishing apparatus according to claim 1, characterized by: It also comprises a negative pressure device connected with the finished product tank (7) and the high finished product tank (8) respectively, and the negative pressure device comprises a water jet vacuum unit (3), and the air suction ends of the water jet vacuum unit (3) are connected with the finished product tank (7) and the high finished product tank (8) respectively through pipelines.

7. The 2-ethylanthraquinone crude polishing apparatus according to claim 1, characterized by: The liquid discharge port of the condensation crystallization slicing machine (9) is connected with a reflux storage tank (11) through a pipeline, and the reflux storage tank (11) is connected with the high finished product tank (8) through a pipeline.

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