CN211002046U - Filling device of alkyl aluminum - Google Patents
Filling device of alkyl aluminum Download PDFInfo
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- CN211002046U CN211002046U CN201921427042.8U CN201921427042U CN211002046U CN 211002046 U CN211002046 U CN 211002046U CN 201921427042 U CN201921427042 U CN 201921427042U CN 211002046 U CN211002046 U CN 211002046U
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Abstract
The application discloses a filling device for aluminum alkyl, which comprises a commodity tank, an isolation tank, a nitrogen pipeline provided with a second pneumatic switch valve, a tail gas pipeline provided with a third pneumatic switch valve and an aluminum alkyl feeding pipeline provided with a seventh pneumatic switch valve, wherein the top of the commodity tank is communicated with the top of the isolation tank through the tail gas pipeline, and tail gas discharged from a gas outlet of the isolation tank is sent to a tail gas treatment system; one end of an alkyl aluminum feeding pipeline is communicated with an alkyl aluminum production system, and the other end of the alkyl aluminum feeding pipeline extends into the commodity tank and is close to the bottom wall; four branch pipes are arranged on an alkyl aluminum feeding pipeline between the seventh pneumatic switch valve and the commodity tank, and are respectively communicated with an alkyl aluminum residual liquid treatment system, a cleaning liquid feeding system, a cleaning liquid discharging system and a nitrogen pipeline; one end of the nitrogen pipeline is communicated with the nitrogen system, and the other end of the nitrogen pipeline is communicated with a tail gas pipeline between the third pneumatic switch valve and the commodity tank. The device has simple structure, good safety in the filling process of the alkyl aluminum and high filling efficiency of the alkyl aluminum.
Description
Technical Field
The application relates to a filling device for metal organic compounds, in particular to a filling device for alkyl aluminum.
Background
Aluminum alkyls, particularly triethylaluminum, are important chemicals and are widely used as catalysts in petrochemical industry, fine chemical industry and polymer chemical industry. However, triethyl aluminum has high activity, can spontaneously combust when contacting air and is strongly decomposed when meeting water, and combustible alkane gas is released to explode. Therefore, air and water must be strictly isolated in the processes of storing, transporting and filling the triethyl aluminum, and the filling safety is one of the difficulties faced in the process of using the triethyl aluminum. At present, manual operation is carried out in the filling process of the triethyl aluminum, the phenomena of leakage or over-filling of the triethyl aluminum and the like are easily caused by manual misoperation, and a large amount of manpower is needed. In addition, the commodity tank cannot be thoroughly cleaned before the triethyl aluminum is filled, so that potential safety hazards exist on one hand, and the quality of products can be influenced on the other hand.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem that prior art exists, the aim at of this application provides safe and reliable's alkyl aluminium fills dress device, can realize the automation that the alkyl aluminium filled moreover, reduces intensity of labour, improves the security.
The aluminum alkyl filling device is characterized by comprising a commodity tank, an isolation tank, a nitrogen pipeline provided with a second pneumatic switch valve, a tail gas pipeline provided with a third pneumatic switch valve and an aluminum alkyl feeding pipeline provided with a seventh pneumatic switch valve, wherein the top of the commodity tank is communicated with the top of the isolation tank through the tail gas pipeline, and tail gas discharged from a gas outlet of the isolation tank is fed into a tail gas treatment system; one end of the alkyl aluminum feeding pipeline is communicated with the alkyl aluminum production system, and the other end of the alkyl aluminum feeding pipeline extends into the commodity tank and is close to the bottom wall; four branch pipes are arranged on an alkyl aluminum feeding pipeline between the seventh pneumatic switch valve and the commodity tank, the four branch pipes are respectively communicated with an alkyl aluminum residual liquid treatment system, a cleaning liquid feeding system, a cleaning liquid discharging system and a nitrogen pipeline, and the four branch pipes are respectively an alkyl aluminum residual liquid discharging pipeline provided with the first pneumatic switch valve, a cleaning liquid feeding pipeline provided with the fourth pneumatic switch valve, a cleaning liquid discharging pipeline provided with the fifth pneumatic switch valve and a nitrogen purging pipeline provided with the sixth pneumatic switch valve; one end of the nitrogen pipeline is communicated with the nitrogen system, and the other end of the nitrogen pipeline is communicated with a tail gas pipeline between the third pneumatic switch valve and the commodity tank.
The filling device for the alkyl aluminum is characterized by further comprising a nitrogen seal pipeline, one end of the nitrogen seal pipeline is communicated with the nitrogen pipeline, the other end of the nitrogen seal pipeline is communicated with the top of the isolation tank, and a control valve is arranged on the nitrogen seal pipeline.
The filling device of the alkyl aluminum is characterized by further comprising an oil seal tank and a tail gas outlet pipeline provided with a control valve, wherein liquid oil for liquid seal is filled in the oil seal tank; one end of the tail gas outlet pipeline is communicated with the top of the isolation tank, the other end of the tail gas outlet pipeline extends into the liquid oil in the oil seal tank, and a gas outlet in the top of the oil seal tank is communicated with the tail gas treatment system through a pipeline.
The filling device for the alkyl aluminum is characterized by further comprising a weighbridge arranged at the bottom of the commodity tank and used for detecting weight, wherein a weighbridge weight instrument used for displaying detected weight data is arranged on the weighbridge, the weighbridge weight instrument is in signal connection with the seventh pneumatic switch valve through a DCS control system so that the weight data detected by the weighbridge weight instrument can be transmitted to the DCS control system, and the DCS control system feeds back and controls the seventh pneumatic switch valve to be opened or closed.
The filling device for the alkyl aluminum is characterized in that a pressure gauge for detecting air pressure is arranged on the isolation tank.
The filling device for the alkyl aluminum is characterized in that a liquid level meter for detecting liquid level is arranged on the isolation tank and is in signal connection with the seventh pneumatic switch valve through a DCS control system, when the liquid level meter detects that liquid exists in the isolation tank, the liquid level meter transmits a signal to the DCS control system, and the DCS control system feeds back and controls the seventh pneumatic switch valve to be forcibly closed.
Compared with the prior art, the beneficial effect that this application was got is:
1. the alkyl aluminum filling process is controlled by a DCS control system, so that the automatic control and continuous operation of the alkyl aluminum filling are realized, and the safety of the alkyl aluminum filling process is kept.
2. The simple structure of this application device can eliminate the impure potential safety hazard of alkyl aluminium raffinate to commodity jar rinse thoroughly through the device structure of this application, the quality of the product that improves moreover.
3. The oil seal system and the nitrogen seal system are arranged, so that air and water are isolated, and the safety of the alkyl aluminum filling process is improved.
4. The isolation tank is arranged, the liquid level meter is arranged on the isolation tank and is in signal connection with a seventh pneumatic switch valve F07 through a DCS control system, multiple protection is provided for filling safety, and verification is achieved in actual operation.
Drawings
FIG. 1 is a schematic view of an aluminum alkyl charging apparatus according to the present application;
in the figure, V01-an isolation tank, V02-an oil seal tank, V03-a commercial tank, L09-a nitrogen seal pipeline, W01-a wagon balance, L01-a nitrogen pipeline, L02-an alkyl aluminum raffinate discharge pipeline, L03-a cleaning solution feed pipeline, L04-a cleaning solution discharge pipeline, L05-a tail gas pipeline, L06-an alkyl aluminum feed pipeline, L07-a tail gas outlet pipeline, L08-a nitrogen purge pipeline, F07-a seventh pneumatic switch valve, F06-a sixth pneumatic switch valve, F05-a fifth pneumatic switch valve, F04-a fourth pneumatic switch valve, F03-a third pneumatic switch valve, F02-a second pneumatic switch valve and F01-a first pneumatic switch valve.
Detailed Description
The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited thereto.
Example (b): compare FIG. 1
A filling device for alkyl aluminum comprises a commodity tank V03, an isolation tank V01, an oil seal tank V02, a nitrogen pipeline L provided with a second pneumatic switch valve F02, an exhaust pipeline L provided with a third pneumatic switch valve F03, an alkyl aluminum feeding pipeline L06 provided with a seventh pneumatic switch valve F07 and an exhaust outlet pipeline L provided with a control valve, wherein the top of the commodity tank V03 is communicated with the top of the isolation tank V01 through an exhaust pipeline L, one end of the alkyl aluminum feeding pipeline L06 is communicated with an alkyl aluminum production system, and the other end of the alkyl aluminum feeding pipeline L extends into the commodity tank V03 to be close to the bottom wall (alkyl aluminum products produced by the alkyl aluminum production system are conveyed into the commodity tank V03 for storage through the alkyl aluminum feeding pipeline L06), one end of the nitrogen pipeline L is communicated with the nitrogen system, and the other end of the nitrogen pipeline is communicated with a storage pipeline L arranged on the exhaust pipeline 5905 between the third pneumatic switch valve F03 and the commodity tank V03 (the exhaust pipeline 5905 is conveyed to the nitrogen storage tank through the nitrogen pipeline 599 and the nitrogen storage pipeline 03).
Four branch pipes are arranged on an alkyl aluminum feeding line L06 between the seventh pneumatic switch valve F07 and the commercial product tank V03, the four branch pipes are respectively an alkyl aluminum raffinate discharging line L provided with the first pneumatic switch valve F01, a cleaning liquid feeding line L003 provided with the fourth pneumatic switch valve F04, a cleaning liquid discharging line L provided with the fifth pneumatic switch valve F05, and a nitrogen purge line L provided with the sixth pneumatic switch valve F06, an end of the nitrogen purge line L308 remote from the alkyl aluminum feeding line L is connected to the nitrogen line L, an end of the alkyl aluminum raffinate discharging line L remote from the alkyl aluminum feeding line L is connected to an alkyl aluminum treatment system (an alkyl aluminum raffinate in the commercial product tank V03 is discharged through the alkyl aluminum raffinate discharging line L and conveyed to the alkyl aluminum raffinate treatment system for treatment), an end of the cleaning liquid feeding line L remote from the alkyl aluminum raffinate feeding line 3606 is connected to the cleaning liquid feeding system (an alkyl aluminum raffinate in the commercial product tank V L is connected to the cleaning liquid feeding line 3604, and the cleaning liquid feeding line L is connected to the cleaning liquid feeding system (the cleaning liquid feeding line 3604, and the cleaning liquid feeding line L is connected to the cleaning liquid feeding system L).
Referring to fig. 1, the structure of the present application further includes a nitrogen seal line L09, one end of the nitrogen seal line L09 is connected to a nitrogen line L01, the other end is connected to the top of the isolation tank V01, a control valve is disposed on the nitrogen seal line L09, nitrogen is previously fed into the isolation tank V01 through the nitrogen seal line L09 to displace and exhaust air in the isolation tank V01, and a small amount of air in the isolation tank V01 is prevented from flowing back into the commodity tank V03, thereby causing a safety hazard, in order to clearly see the nitrogen seal pressure in the isolation tank V01, a pressure gauge for detecting the air pressure is disposed on the isolation tank V01, and a nitrogen seal of 2KPa is generally maintained in the isolation tank V01.
Referring to fig. 1, liquid oil for liquid seal is contained in the oil seal tank V02, one end of the tail gas outlet pipeline L07 is communicated with the top of the isolation tank V01, the other end of the tail gas outlet pipeline L extends into the liquid oil in the oil seal tank V02, and an air outlet at the top of the oil seal tank V02 is communicated with a tail gas treatment system through a pipeline.
Wherein the cleaning solution is hexane.
Still including setting up in commodity jar V03 bottom in the structure of this application and being used for the weighbridge W01 of detection weight, be provided with the weighbridge weight instrument that is used for showing the weight data that detect on the weighbridge W01, the weighbridge weight instrument pass through DCS control system with seventh pneumatic switch valve F07 signal connection, with through the weight data transmission that the weighbridge weight instrument detected and obtains is given DCS control system, and DCS control system feedback controls seventh pneumatic switch valve F07 and opens or close.
All instrument valves have the probability of failure, and once the wagon balance W01 is weighed, the aluminum alkyl in the commodity tank is overcharged, and the excessive aluminum alkyl overflows into the isolation tank V01 through the tail gas pipeline L05. in order to avoid the possible extremely small failure and provide multiple safety protection, a liquid level meter for detecting the liquid level is arranged on the isolation tank V01 and is also in signal connection with the seventh pneumatic switch valve F07 through a DCS control system, when the liquid level meter detects that the isolation tank V01 has liquid, the liquid level meter transmits a signal to the DCS control system, and the DCS control system feeds back and controls the seventh pneumatic switch valve F07 to be forcibly closed, so that in the process of filling the aluminum alkyl, the wagon balance weight instrument on the wagon balance W01 detects that the aluminum alkyl filled in the commodity tank V03 reaches a set value or the liquid level meter on the isolation tank V01 detects that the liquid level exists, and feeds back and controls the seventh pneumatic switch valve F07 to be closed through the DCS control system.
The utility model discloses a device is used for filling dress method of triethyl aluminium, including following step:
(1) the connection is that an alkyl aluminum feeding pipeline L06 and a tail gas pipeline L05 are respectively connected with a commercial tank V03, and all pneumatic switch valves are in a closed state at the moment, the interior of an isolation tank V01 is kept filled with nitrogen atmosphere, and the gas in the isolation tank V01 can be blown out from an oil seal tank V02 through a tail gas outlet pipeline L07;
(2) liquid drainage, namely opening a second pneumatic switch valve F02 on a nitrogen pipeline L01 and a first pneumatic switch valve F01 on an alkyl aluminum raffinate discharge pipeline L02 in sequence, completely discharging triethyl aluminum raffinate in a commodity tank V03 by using nitrogen, and then closing the valves in sequence, wherein all the pneumatic switch valves are in a closed state;
(3) cleaning, namely opening a fourth pneumatic switch valve F04 on a cleaning solution feeding pipeline L03 and a third pneumatic switch valve F03 on a tail gas pipeline L05 in sequence, inputting 500kg of hexane (used as cleaning solution) into a commercial tank V03 through a cleaning solution feeding pipeline L03, closing the valves in sequence, and then opening a fifth pneumatic switch valve F05 on a cleaning solution discharging pipeline L04 and a second pneumatic switch valve F02 on a nitrogen pipeline L01 in sequence, pressing hexane to a cleaning solution discharging system for next treatment, closing the valves after the treatment is finished, and closing all the pneumatic switch valves at the time;
(4) and (3) blowing, namely opening a third pneumatic switch valve F03 on an exhaust pipeline L05 and a sixth pneumatic switch valve F06 on a nitrogen purging pipeline L08 in sequence, blowing the commercial tank V03 by using 0.2MPa nitrogen, and closing a sixth pneumatic switch valve F06 on a nitrogen purging pipeline L08.
(5) Charging, opening a seventh pneumatic switch valve F07 on an alkyl aluminum feeding line L06, displaying the weight of triethyl aluminum input into a commercial tank V03 by a wagon balance weight instrument of wagon balance W01, and closing a seventh pneumatic switch valve F07 on an alkyl aluminum feeding line L06 by the feedback of a DCS control system when the wagon balance weight displays 2 t;
(6) and (3) purging, namely opening a sixth pneumatic switch valve F06 on a nitrogen purging pipeline L08, purging the inside of the commercial tank V03 by nitrogen, and closing a sixth pneumatic switch valve F06 on the nitrogen purging pipeline L08 and a third pneumatic switch valve F03 on the tail gas pipeline L05 after purging is finished.
The description is given for the sake of illustration only, and should not be construed as limiting the scope of the invention to the particular forms set forth in the examples.
Claims (6)
1. An aluminum alkyl filling device is characterized by comprising a commodity tank (V03), an isolation tank (V01), a nitrogen pipeline (L01) provided with a second pneumatic switch valve (F02), an exhaust pipeline (L05) provided with a third pneumatic switch valve (F03) and an aluminum alkyl feeding pipeline (L06) provided with a seventh pneumatic switch valve (F07), wherein the top of the commodity tank (V03) is communicated with the top of the isolation tank (V01) through the exhaust pipeline (L05), the exhaust discharged from an air outlet of the isolation tank (V01) is sent to an exhaust treatment system, one end of the aluminum alkyl feeding pipeline (L06) is communicated with an aluminum alkyl production system, and the other end of the aluminum alkyl feeding pipeline extends into the interior of the commodity tank (V03) and is close to the bottom wall;
four branch pipes are arranged on an alkyl aluminum feeding pipeline (L06) between the seventh pneumatic switch valve (F07) and the commodity tank (V03), the four branch pipes are respectively communicated with an alkyl aluminum raffinate treatment system, a cleaning liquid feeding system, a cleaning liquid discharging system and a nitrogen pipeline (L01), and the four branch pipes are respectively an alkyl aluminum raffinate discharging pipeline (L02) provided with a first pneumatic switch valve (F01), a cleaning liquid feeding pipeline (L03) provided with a fourth pneumatic switch valve (F04), a cleaning liquid discharging pipeline (L04) provided with a fifth pneumatic switch valve (F05) and a nitrogen purging pipeline (L08) provided with a sixth pneumatic switch valve (F06);
one end of the nitrogen pipeline (L01) is connected to a nitrogen system, and the other end is connected to a tail gas pipeline (L05) between a third pneumatic switch valve (F03) and a commodity tank (V03).
2. The filling apparatus for aluminum alkyls as claimed in claim 1, further comprising a nitrogen seal line (L09), one end of the nitrogen seal line (L09) is connected to the nitrogen gas line (L01) and the other end is connected to the top of the insulated tank (V01), and the nitrogen seal line (L09) is provided with a control valve.
3. The filling device of the alkyl aluminum according to claim 1, characterized by further comprising an oil seal tank (V02) and a tail gas outlet pipeline (L07) provided with a control valve, wherein liquid oil for liquid seal is contained in the oil seal tank (V02), one end of the tail gas outlet pipeline (L07) is communicated with the top of the isolation tank (V01), the other end of the tail gas outlet pipeline (L07) extends into the liquid oil in the oil seal tank (V02), and a gas outlet at the top of the oil seal tank (V02) is communicated with a tail gas treatment system through a pipeline.
4. The aluminum alkyl filling apparatus as claimed in claim 1, further comprising a weighbridge (W01) disposed at the bottom of the commercial tank (V03) for detecting the weight of the aluminum alkyl, wherein a weighbridge weight meter for displaying the detected weight data is disposed on the weighbridge (W01), and the weighbridge weight meter is in signal connection with the seventh pneumatic switch valve (F07) via a DCS control system, so that the weight data detected by the weighbridge weight meter is transmitted to the DCS control system, and the DCS control system feeds back and controls the seventh pneumatic switch valve (F07) to open or close.
5. The aluminum alkyl filling apparatus as recited in claim 1, wherein said insulating tank (V01) is provided with a pressure gauge for detecting a gas pressure.
6. An aluminum alkyl filling apparatus as defined in claim 4, wherein said isolation tank (V01) is provided with a liquid level meter for detecting the liquid level, said liquid level meter is also in signal connection with said seventh pneumatic switch valve (F07) through a DCS control system, when said liquid level meter detects the presence of liquid in the isolation tank (V01), said liquid level meter transmits a signal to the DCS control system, and the DCS control system feeds back and controls the seventh pneumatic switch valve (F07) to be forcibly closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921427042.8U CN211002046U (en) | 2019-08-30 | 2019-08-30 | Filling device of alkyl aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921427042.8U CN211002046U (en) | 2019-08-30 | 2019-08-30 | Filling device of alkyl aluminum |
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| Publication Number | Publication Date |
|---|---|
| CN211002046U true CN211002046U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921427042.8U Active CN211002046U (en) | 2019-08-30 | 2019-08-30 | Filling device of alkyl aluminum |
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| CN (1) | CN211002046U (en) |
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2019
- 2019-08-30 CN CN201921427042.8U patent/CN211002046U/en active Active
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