CN210736228U - Safety automatic control system of aluminum fluoride device - Google Patents
Safety automatic control system of aluminum fluoride device Download PDFInfo
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- CN210736228U CN210736228U CN201921917941.6U CN201921917941U CN210736228U CN 210736228 U CN210736228 U CN 210736228U CN 201921917941 U CN201921917941 U CN 201921917941U CN 210736228 U CN210736228 U CN 210736228U
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- sulfuric acid
- kiln
- trip valve
- tank
- negative pressure
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Abstract
The utility model belongs to the technical field of chemical industry safety, concretely relates to safety autonomous system of aluminium fluoride device, including 105% sulfuric acid tank, 98% sulfuric acid tank, Shenke title, sulfuric acid mixing tank, hot-blast furnace and HF reacting kiln, be equipped with 105% sulfuric acid trip valve on the pipeline between 105% sulfuric acid tank and the sulfuric acid mixing tank, be equipped with 98% sulfuric acid trip valve on the pipeline between 98% sulfuric acid tank and the sulfuric acid mixing tank, HF reacting kiln tail is equipped with the emergency purification trip valve, HF reacting kiln is equipped with negative pressure monitoring devices, 105% sulfuric acid trip valve, 98% sulfuric acid trip valve, Shenke title, hot-blast furnace, emergency purification trip valve and negative pressure monitoring devices all are connected with the control system electricity. The utility model discloses when HF reaction kiln negative pressure can't keep, but each trip valve self-actuated control switch avoids hydrogen fluoride to leak in a large number in the reaction kiln, has guaranteed the safe operation of device.
Description
Technical Field
The utility model belongs to the technical field of chemical industry safety, concretely relates to safety autonomous system of aluminium fluoride device.
Background
At present, in the aluminium fluoride production technology, after fluorite after the drying is carried to the big feed bin of fluorite by dense phase, by fluorite ejection of compact auger delivery to fluorite feed box, get into the scholar scale because of gravity reason again by the fluorite feed box, get into hydrogen fluoride reaction kiln feeding spiral entering hydrogen fluoride reaction kiln after the measurement by the scholar scale again.
98 percent and 105 percent sulfuric acid are metered by a sulfuric acid storage through an acid pump and a flow meter and then enter a sulfuric acid mixing kettle, overflow to the gas guide tube through the sulfuric acid mixing kettle, and enter a hydrogen fluoride reaction kiln to react with fluorite to generate hydrogen fluoride after preliminarily washing and cooling crude hydrogen fluoride gas from the hydrogen fluoride reaction kiln.
The hydrogen fluoride reaction kiln is guaranteed to maintain negative pressure by a tail gas fan, and the safe and environment-friendly operation of the device can be guaranteed only by guaranteeing the negative pressure of the reaction kiln. In actual production, once a follow-up system breaks down, the reaction kiln cannot keep negative pressure, a large amount of hydrogen fluoride gas is emitted, and an on-site operator cannot close valves of 98% sulfuric acid and 105% sulfuric acid, so that a large amount of hydrogen fluoride can escape from the reaction kiln, and environmental hazards, personnel poisoning and suffocation are caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the safety automatic control system of the aluminum fluoride device is provided, the hydrogen fluoride in the reaction kiln is prevented from being leaked in a large amount, and the safe operation of the device is ensured.
The safety automatic control system of the aluminum fluoride device comprises a 105% sulfuric acid tank, a 98% sulfuric acid tank, a Schenk scale, a sulfuric acid mixing kettle, a hot blast stove and an HF reaction kiln, wherein the 105% sulfuric acid tank and the 98% sulfuric acid tank are respectively connected with the sulfuric acid mixing kettle through pipelines, the Schenk scale and the sulfuric acid mixing kettle are respectively connected with the HF reaction kiln through pipelines, a 105% sulfuric acid cut-off valve is arranged on the pipeline between the 105% sulfuric acid tank and the sulfuric acid mixing kettle, a 98% sulfuric acid cut-off valve is arranged on the pipeline between the 98% sulfuric acid tank and the sulfuric acid mixing kettle, an emergency purification cut-off valve is arranged at the kiln tail of the HF reaction kiln, the HF reaction kiln is provided with a negative pressure monitoring device, and the 105% sulfuric acid cut-off valve, the 98% sulfuric acid cut-off valve, the Schenk scale.
Preferably, a storage bin is arranged above the Schwann scale.
Preferably, the emergency purification cut-off valve is connected with the emergency purifier.
Preferably, the negative pressure monitoring device comprises two pressure sensors.
Preferably, the pressure in the HF reaction kiln is 0 to-0.5 KPa.
When the negative pressure monitoring device monitors that the pressure in the HF reaction kiln is positive pressure and can not keep negative pressure, the signal is fed back to the control system, the control system sends out a signal, the 105% sulfuric acid stop valve and the 98% sulfuric acid stop valve are closed, Schering weighing blanking is stopped, feeding of the HF reaction kiln is stopped, the hot blast stove is shut down, the HF reaction kiln is free of heat source, then the HF reaction kiln tail emergency purification stop valve is controlled to be opened, and hydrogen fluoride in the HF reaction kiln enters the kiln tail emergency purifier to be treated. The series of automatic devices can effectively avoid hydrogen fluoride gas in the HF reaction kiln from escaping.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses when HF reaction kiln negative pressure can't keep, through control system, but each trip valve self-actuated control switch, the accident of hydrogen fluoride a large amount of leakages in the reaction kiln can not appear, has guaranteed the safe operation of device.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. a 105% sulphuric acid tank; 2. a 98% sulphuric acid tank; 3. a 105% sulfuric acid shut-off valve; 4. a 98% sulfuric acid shut-off valve; 5. a storage bin; 6. performing Schickering and weighing; 7. a sulfuric acid mixing kettle; 8. a hot blast stove; 9. an HF reaction kiln; 10. an emergency purifier; 11. an emergency purification shut-off valve; 12. negative pressure monitoring devices.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the safety automatic control system of the aluminum fluoride device comprises a 105% sulfuric acid tank 1, a 98% sulfuric acid tank 2, a stock bin 5, a schenk scale 6, a sulfuric acid mixing kettle 7, a hot blast stove 8 and an HF reaction kiln 9, wherein the 105% sulfuric acid tank 1 and the 98% sulfuric acid tank 2 are respectively connected with the sulfuric acid mixing kettle 7 through pipelines, the stock bin 5 is arranged above the schenk scale 6, the schenk scale 6 and the sulfuric acid mixing kettle 7 are respectively connected with the HF reaction kiln 9 through pipelines, a 105% sulfuric acid shut-off valve 3 is arranged on the pipeline between the 105% sulfuric acid tank 1 and the sulfuric acid mixing kettle 7, a 98% sulfuric acid shut-off valve 4 is arranged on the pipeline between the 98% sulfuric acid tank 2 and the sulfuric acid mixing kettle 7, an emergency purification shut-off valve 11 is arranged at the tail of the HF reaction kiln 9, the emergency purification shut-off valve 11 is connected with an emergency purifier 10, the HF reaction kiln 9, the negative pressure monitoring device 12 comprises two pressure sensors, and the 105% sulfuric acid cut-off valve 3, the 98% sulfuric acid cut-off valve 4, the Shenke scale 6, the hot blast stove 8, the emergency purification cut-off valve 11 and the negative pressure monitoring device 12 are all electrically connected with the control system. The pressure in the HF reaction kiln 9 is maintained between 0 KPa and-0.5 KPa.
When any one of the two pressure sensors in the negative pressure monitoring device 12 gives an alarm, when the pressure in the HF reaction kiln 9 is monitored, the pressure cannot keep negative pressure, the signal is fed back to the control system, the control system sends out a signal, the 105% sulfuric acid stop valve 3 and the 98% sulfuric acid stop valve 4 are closed, the Schenk scale 6 is stopped to discharge, the hot blast stove 8 is shut down, then the HF reaction kiln 9 kiln tail emergency purification stop valve 11 is controlled to be opened, and hydrogen fluoride in the HF reaction kiln 9 enters the kiln tail emergency purifier 10 to be treated.
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.
Claims (4)
1. The utility model provides a safe autonomous system of aluminium fluoride device, includes 105% sulfuric acid tank (1), 98% sulfuric acid tank (2), Shenke is called (6), sulfuric acid mixing tank (7), hot-blast furnace (8) and HF reacting kiln (9), 105% sulfuric acid tank (1) and 98% sulfuric acid tank (2) are connected with sulfuric acid mixing tank (7) through the pipeline respectively, Shenke is called (6) and sulfuric acid mixing tank (7) are connected with HF reacting kiln (9) through the pipeline respectively, its characterized in that: be equipped with 105% sulphuric acid trip valve (3) on the pipeline between 105% sulphuric acid jar (1) and sulphuric acid mixing kettle (7) be equipped with 98% sulphuric acid trip valve (4) on the pipeline between 98% sulphuric acid jar (2) and sulphuric acid mixing kettle (7) HF reacting kiln (9) kiln tail is equipped with urgent purification trip valve (11), HF reacting kiln (9) are equipped with negative pressure monitoring devices (12), 105% sulphuric acid trip valve (3), 98% sulphuric acid trip valve (4), shenke title (6), hot-blast furnace (8), urgent purification trip valve (11) and negative pressure monitoring devices (12) all are connected with the control system electricity.
2. The safety autonomous system of aluminum fluoride plant according to claim 1, characterized in that: a stock bin (5) is arranged above the Schecker scale (6).
3. The safety autonomous system of aluminum fluoride plant according to claim 1, characterized in that: the emergency purification cut-off valve (11) is connected with the emergency purifier (10).
4. The safety autonomous system of aluminum fluoride plant according to claim 1, characterized in that: the negative pressure monitoring device (12) comprises two pressure sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917941.6U CN210736228U (en) | 2019-11-07 | 2019-11-07 | Safety automatic control system of aluminum fluoride device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917941.6U CN210736228U (en) | 2019-11-07 | 2019-11-07 | Safety automatic control system of aluminum fluoride device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210736228U true CN210736228U (en) | 2020-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921917941.6U Active CN210736228U (en) | 2019-11-07 | 2019-11-07 | Safety automatic control system of aluminum fluoride device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210736228U (en) |
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2019
- 2019-11-07 CN CN201921917941.6U patent/CN210736228U/en active Active
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