CN219324049U - Purifying device for acetylene gas by calcium carbide method - Google Patents

Abstract

The utility model relates to a purifying device for acetylene gas by a calcium carbide method, which belongs to the technical field of acetylene production and purification and comprises a main purifying device and a standby purifying device, wherein the tops of the main purifying device and the standby purifying device are respectively connected with a purifying device inlet main pipe through a main purifying device inlet pipe and a standby purifying device inlet pipe, the purifying device inlet main pipe is connected with a blasting pressure relief assembly and a safe pressure relief assembly, the main purifying device inlet pipe and the standby purifying device inlet pipe are both connected with a replacement nitrogen assembly, the lower parts of the main purifying device and the lower parts of the standby purifying device are respectively connected with a purifying device outlet main pipe through a main purifying device outlet pipe and a standby purifying device outlet pipe, and fillers are respectively arranged in the main purifying device and the standby purifying device.

Description

Purifying device for acetylene gas by calcium carbide method

Technical Field

The utility model relates to the technical field of acetylene production and purification, in particular to a device for purifying acetylene gas by a calcium carbide method.

Background

In the existing process flow for producing PVC by a calcium carbide method, acetylene gas is generated by an addition reaction of calcium carbide and water, and the obtained acetylene gas is sent to a downstream vinyl chloride device for use after washing by water alkali. Because of the trace phosphate, sulfate and soluble solids in the acetylene gas, the impurities cannot be removed completely after conventional water alkali washing, and can be accumulated in the pipes and equipment of a downstream vinyl chloride device for a long time, so that the utilization rate of the equipment is reduced, the production capacity is influenced, the acetylene gas generated by a calcium carbide method is required to be purified again, and the cleanliness of the acetylene gas is improved, so that the more advanced and higher-end production process is satisfied.

Therefore, a person skilled in the art provides a purifying device for acetylene gas by a calcium carbide method, so as to solve the problems in the background art.

Disclosure of Invention

The utility model provides a purifying device for acetylene gas by a calcium carbide method, aiming at reducing trace phosphate, sulfate and soluble solids in the acetylene gas by the purifying device, meeting the higher requirements of downstream production, improving the cleanliness of the acetylene gas, further improving the quality of the acetylene gas and meeting the more advanced and higher-end production process.

The technical scheme for solving the technical problems is as follows: the utility model provides a purifier of carbide method acetylene gas, includes main purifier and reserve purifier, main purifier with reserve purifier's top is connected with purifier access manifold through main purifier access pipe and reserve purifier access pipe interval respectively, purifier access manifold keeps away from one side interval connection blasting pressure release subassembly and safe pressure release subassembly of main purifier access pipe, main purifier access pipe with reserve purifier access pipe all is connected with the replacement nitrogen gas subassembly, main purifier's lower part with reserve purifier's lower part is connected with purifier access manifold through main purifier outlet pipe and reserve purifier outlet pipe interval respectively, all be provided with the filler in main purifier and the reserve purifier.

The beneficial effects of the utility model are as follows:

1. because acetylene is a flammable and explosive dangerous gas, before the acetylene gas is purified, the air in the main purification device and the standby purification device is replaced by nitrogen through the replacement nitrogen component, so that the contact of acetylene and air is prevented from generating safety accidents;

2. the main purification device and the standby device can adsorb and purify acetylene gas through the efficient water removal and impurity removal filler, so that trace phosphate, sulfate and soluble solids in the acetylene gas are reduced, and the cleanliness of the acetylene gas is improved;

3. when acetylene gas enters the main purification device and the standby purification device, if the pressure in the pipeline is too high, the explosion pressure relief assembly and the safety pressure relief assembly can relieve the pressure of the pipeline, so that safety accidents are avoided, and the production progress is not influenced;

4. when the pressure difference of the main purifying device is detected to be higher than 0.05MPa, a worker can timely switch the standby purifying device to purify, when the pressure difference of the standby purifying device is detected to be higher than 0.05MPa, the main purifying device and the standby purifying device stop purifying operation, and a purifying device bypass pipe can be opened, so that acetylene gas enters a downstream device through the bypass pipe without influencing the production progress;

5. when the main purifying device, the standby purifying device or the pipeline in the system fails, the purifying operation can be stopped, the system is overhauled, and the service life of the system is prolonged.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the bottom of the main purification device is connected with a first replacement drain pipe, and the bottom of the standby purification device is connected with a second replacement drain pipe.

The beneficial effect of adopting the further scheme is that the acetylene gas is discharged from the first displacement drain pipe and the second displacement drain pipe through the filler to discharge trace phosphate, sulfate and soluble solids in the acetylene gas, and purified acetylene gas in the device is not influenced.

Further, the purification device inlet manifold is connected with an acetylene inlet manifold which is horizontally arranged through a first three-way connecting piece, two connecting ends of the first three-way connecting piece are respectively connected with the purification device inlet manifold and the acetylene inlet manifold, the other end of the first three-way connecting piece is connected with one end of a purification device bypass pipe, the other end of the purification device bypass pipe is connected with an acetylene gas outlet manifold through a second three-way connecting piece, two connecting ends of the second three-way connecting piece are respectively connected with the purification device bypass pipe and the acetylene gas outlet manifold, the other end of the second three-way connecting piece is connected with the purification device outlet manifold, and a bypass valve is arranged on the purification device bypass pipe.

The beneficial effect of adopting above-mentioned further scheme is, first tee bend connecting piece and second tee bend connecting piece have strengthened the leakproofness between the pipeline.

Further, a purification device inlet valve is arranged on one side of the purification device inlet main pipe, which is close to the acetylene inlet main pipe, and a third online pressure detector connected with the purification device inlet main pipe is arranged on one side of the purification device inlet valve, which is far away from the acetylene inlet main pipe.

The beneficial effect of adopting above-mentioned further scheme is, the pressure in the purifier import owner pipe can be detected when the maintenance to the third online pressure detector, if show pressure, indicate that leak in the system or manometer damage, need detect the confirmation.

Further, the blasting pressure release subassembly includes root valve, rupture disk and blasting pressure release pipe, the third is kept away from on-line pressure detector establish one side of purifier import valve the blasting pressure release pipe, the one end of blasting pressure release pipe is connected with purifier import house steward, the other end of blasting pressure release pipe is connected with the one end of pressure release house steward, the other end of pressure release house steward is connected with high-point blow-down pipe, the blasting pressure release pipe is close to purifier import house steward's one end is provided with root valve, root valve keeps away from one side of purifier import house steward is provided with the rupture disk.

The beneficial effect of adopting above-mentioned further scheme is, in the purification operation, when the pressure value in purifier intake manifold is greater than 0.2MPa and the rising speed is too fast, root valve can initiatively open for the rupture disk is broken the pressure release, and can discharge to the high point blow-down pipe from the pressure release manifold and discharge, and then guarantee the safety in workshop.

Further, the top of the high-point blow-down pipe is connected with a flame arrester.

The beneficial effect of adopting above-mentioned further scheme is, in the flame arrester can prevent outside air admission pressure release house steward, prevent to take place the burning with acetylene gas contact, guaranteed the safety of workshop device.

Further, safety relief subassembly includes first displacement blow-out valve, relief pipe, relief valve front valve, relief valve and relief valve back valve, the blasting relief pipe is kept away from one side of third online pressure detector is provided with first displacement pipe, the one end of first displacement pipe with purifier intake manifold is connected, the other end of first displacement pipe is connected with the one end of safety relief pipe, the other end of safety relief pipe is connected with the relief manifold, be provided with on the first displacement pipe first displacement blow-out valve, first displacement blow-out valve is kept away from one side of safety relief pipe is connected with the one end of relief pipe, the other end of safety pipe is connected with first displacement blow-out valve is close to one side of safety relief pipe, the relief pipe has set gradually along length direction the relief valve front valve the relief valve and the relief valve back valve.

The beneficial effect of adopting above-mentioned further scheme is, in the purification operation, when the pressure value in purifier import house steward is less than 0.2MPa, the relief valve is automatic to be opened, and the acetylene gas in the purifier import house steward discharges to the pressure release house steward from first displacement pipe, and discharges to the high-point blow-down pipe from the pressure release house steward and discharge, and then guarantees the safety in workshop, and the relief valve self-closing after the pressure release is accomplished.

Further, a first valve and a second valve are arranged on the inlet pipe of the main purification device at intervals, a third valve and a fourth valve are arranged on the inlet pipe of the standby purification device at intervals, a fifth valve is arranged on the first replacement drain pipe, a sixth valve is arranged on the second replacement drain pipe, a seventh valve and an eighth valve are arranged on the outlet pipe of the main purification device at intervals, and a ninth valve and a tenth valve are arranged on the outlet pipe of the standby purification device at intervals.

The adoption of the further scheme has the beneficial effects that as the acetylene gas is dangerous gas, the tightness is ensured by the arrangement of the double valves, and the fifth valve and the sixth valve are convenient for the workers to switch according to the actual condition of purifying the acetylene gas.

Further, still include replacement subassembly, replacement subassembly includes first replacement nitrogen trachea, second replacement nitrogen trachea, first replacement nitrogen valve, second replacement nitrogen valve and replacement nitrogen house steward, the second valve is kept away from one side of first valve is provided with first replacement nitrogen trachea, the tracheal one end of first replacement nitrogen is connected with main purifier import pipe, the tracheal other end of first replacement nitrogen is connected with the replacement nitrogen house steward, the fourth valve is kept away from one side of third valve is provided with the second replacement nitrogen trachea, the tracheal one end of second replacement nitrogen is connected with reserve purifier import pipe, the other end of second replacement nitrogen valve is connected with the level and sets up the replacement nitrogen house steward, be provided with on the first replacement nitrogen trachea first replacement nitrogen valve, be provided with on the second replacement nitrogen trachea the second replacement nitrogen valve.

The beneficial effect of adopting above-mentioned further scheme is that, first replacement nitrogen pipe and second replacement nitrogen pipe are used for respectively before starting main purifier and reserve purifier, accomplish with the air replacement in main purifier and the reserve purifier with nitrogen gas, guarantee to purify acetylene in-process no air, can not take place the burning.

Further, one side that first replacement nitrogen trachea kept away from the second valve is provided with first pipeline, be provided with first online differential pressure detector on the first pipeline, the one end of first pipeline is connected with main purifier import pipe, the other end of first pipeline is connected with purifier export house steward, the second replacement nitrogen trachea is kept away from one side of fourth valve is provided with the second pipeline, be provided with second online differential pressure detector on the second pipeline, second pipeline one end is connected with reserve purifier import pipe, the other end of second pipeline is connected with purifier export house steward, purifier export house steward's the other end is connected with acetylene gas export house steward, be provided with the outlet valve on the purifier export house steward, the outlet valve keep away from one side of acetylene gas export house steward be provided with purifier export house steward connection's fourth online pressure detector.

The beneficial effect of adopting the further scheme is that when the main purifying device is started, the first online pressure difference detector can detect the pressure difference between the acetylene gas before entering the main purifying device and after being purified by the main purifying device; when the standby purification device is started, the second online pressure difference detector can detect the pressure difference between the acetylene gas before entering the standby purification device and after being purified by the standby purification device, and if the pressure difference is smaller than 0.01MPa, the purification reaches the standard and the filler is not blocked; when the first online pressure difference detector detects that the pressure difference is greater than 0.05MPa, a worker can switch to the standby purification device for purification, and when the second online pressure difference detector detects that the pressure difference is greater than 0.05MPa, the worker can stop the purification operation and overhaul the purification device and the pipeline; and the fourth online pressure detector detects the pressure in the outlet manifold of the purification device and remotely transmits the pressure to a computer through a DCS system, so that the pressure is convenient for a worker to check.

Drawings

FIG. 1 is a schematic diagram of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a main purification device; 2. a standby purification device; 3. a first valve; 4. a second valve; 5. a seventh valve; 6. an eighth valve; 7. an inlet valve; 8. an outlet valve; 9. fourth online pressure detection; 10. a third valve; 11. a fourth valve; 12. a ninth valve; 13. a tenth valve; 14. a first replacement nitrogen valve; 15. a second replacement nitrogen valve; 16. a root valve; 17. rupture disk; 18. a first replacement vent valve; 19. a relief valve front valve; 20. a safety valve; 21. a relief valve rear valve; 22. a fifth valve; 23. a sixth valve; 24. a high-point blow-down pipe; 25. a third in-line pressure detector; 26. a flame arrester; 27. an acetylene inlet manifold; 28. an inlet manifold of the purification device; 29. an inlet pipe of the main purification device; 30. a main purification device outlet pipe; 31. an outlet manifold of the purification device; 32. an inlet pipe of the standby purifying device; 33. an outlet pipe of the standby purifying device; 34. a purification device bypass pipe; 35. an acetylene gas outlet header pipe; 36. blasting a pressure relief tube; 37. a first replacement tube; 38. a safety pressure relief tube; 39. a pressure relief main pipe; 40. a first pipe; 41. a second pipe; 42. a first replacement nitrogen line; 43. a second replacement nitrogen line; 44. replacing a nitrogen main pipe; 45. a first replacement drain; 46. a second replacement drain; 47. a safety pipeline; 48. a filler; 49. a first online differential pressure detector; 50. a second online differential pressure detector; 51. and a bypass valve.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Example 1

As shown in fig. 1, this embodiment provides a purifying device for acetylene gas by calcium carbide method, which is characterized by comprising a main purifying device 1 and a standby purifying device 2, the main purifying device 1 and the standby purifying device 2 are the same rectangular box bodies, the middle parts of the tops of the main purifying device 1 and the standby purifying device 2 are respectively connected with a purifying device inlet manifold 28 at intervals through a main purifying device inlet pipe 29 and a standby purifying device inlet pipe 32, one side of the purifying device inlet manifold 28 far away from the main purifying device inlet pipe 29 is connected with a blasting decompression assembly and a safe decompression assembly at intervals, the main purifying device inlet pipe 29 and the standby purifying device inlet pipe 32 are respectively connected with a replacement nitrogen assembly, the lower parts of the main purifying device 1 and the standby purifying device 2 are respectively connected with a purifying device outlet manifold 31 through a main purifying device outlet pipe 30 and a standby purifying device outlet pipe 33, the main purifying device 1 and the standby purifying device 2 are respectively provided with a filler 48, and the filler 48 is an adsorbent, and is generally made of activated carbon or molecular sieve or the like.

The middle part of the bottom of main purifier 1 is connected with first replacement blow off pipe 45, the middle part of the bottom of reserve purifier 2 is connected with second replacement blow off pipe 46, main purifier 1 with first replacement blow off pipe 45 is same vertical central line, reserve purifier 2 with second replacement blow off pipe 46 is same vertical central line.

The purifying device inlet manifold 28 is connected with an acetylene inlet manifold 27 which is horizontally arranged through a first three-way connecting piece, two connecting ends of the first three-way connecting piece are respectively connected with the purifying device inlet manifold 28 and the acetylene inlet manifold 27, the other end of the first three-way connecting piece is connected with one end of a purifying device bypass pipe 34, the other end of the purifying device bypass pipe 34 is connected with an acetylene gas outlet manifold 35 through a second three-way connecting piece, two connecting ends of the second three-way connecting piece are respectively connected with the purifying device bypass pipe 34 and the acetylene gas outlet manifold 35, the other end of the second three-way connecting piece is connected with a purifying device outlet manifold 31, and a bypass valve 51 is arranged on the purifying device bypass pipe 34.

The purifying device inlet manifold 28 is provided with a purifying device inlet valve 7 on one side close to the acetylene inlet manifold 27, a third online pressure detector 25 connected with the purifying device inlet manifold 28 is arranged on one side, far away from the acetylene inlet manifold 27, of the purifying device inlet valve 7, and the inlet valve 7 is made of stainless steel.

The explosion pressure release subassembly includes root valve 16, rupture disc 17 and explosion pressure release pipe 36, the explosion pressure release subassembly is emergent pressure release, can start automatically when the pressure in purifier import house steward 28 is greater than 0.02MPa, third online pressure detector 25 keeps away from one side of purifier import valve 7 is equipped with explosion pressure release pipe 36, the one end of explosion pressure release pipe 36 is connected with purifier import house steward 28, the other end of explosion pressure release pipe 36 is connected with the one end of pressure release house steward 39, the other end of pressure release house steward 39 is connected with high-point blow-down pipe 24, explosion pressure release pipe 36 is close to one end of purifier import house steward 28 is provided with root valve 16, root valve 16 keep away from one side of purifier import house steward 28 is provided with rupture disc 17, root valve 16 pressure release house steward 39 and explosion pressure release pipe 36 adopts stainless steel material, root valve 16 is all opened in normal production process, only when the maintenance protection can root valve 17 be closed, the pressure release pipe 39 can not be broken by the rupture disc 17 when the pressure release pipe 17 is broken, and the pressure release pipe 17 can be broken by the rupture disc 17 has been avoided when the pressure release pipe 17 is broken, and the pressure release pipe is broken by the pressure release 17 can reach once, and the pressure release is broken.

The top of the high point blow-down pipe 24 is connected with a flame arrester 26, which can be an HF-1 type flame arrester, is corrosion resistant and is easy to clean.

The safety relief assembly comprises a first replacement pipe 37, a first replacement relief valve 18, a safety pipeline 47, a safety valve front valve 19, a safety valve 20 and a safety valve rear valve 21, wherein one side of the blasting relief pipe 36, which is far away from the third on-line pressure detector 25, is provided with the first replacement pipe 37, one end of the first replacement pipe 37 is connected with an inlet manifold 28 of the purification device, the other end of the first replacement pipe 37 is connected with one end of the safety pipe 38, the other end of the safety relief pipe 38 is connected with the pressure relief manifold 39, the first replacement relief valve 18 is arranged on the first replacement pipe 37, one side of the first replacement relief valve 18, which is far away from the safety relief pipe 38, is connected with one end of the safety pipeline 47, the other end of the safety pipeline 47 is connected with one side, which is close to the safety relief pipe 38, the safety valve front valve 19, the safety valve 20 and the safety valve rear valve 20 are sequentially arranged along the length direction, the safety valve front valve 20 and the safety valve front valve 20 are automatically driven by the safety pipe 20, the safety valve front valve 20, the safety valve front valve 20 and the safety valve rear valve 20 are normally driven by the safety valve front valve and the safety valve front valve 20, the safety valve front valve and the safety valve front valve 20 are normally opened, and the safety valve front valve 20 and the safety valve is normally opened, the safety valve is opened, and the safety valve is opened by the automatic, and the safety valve is opened.

The main purification device inlet pipe 29 is provided with a first valve 3 and a second valve 4 at intervals, the standby purification device inlet pipe 32 is provided with a third valve 10 and a fourth valve 11 at intervals, the first displacement drain pipe 45 is provided with a fifth valve 22, the second displacement drain pipe 46 is provided with a sixth valve 23, the main purification device outlet pipe 30 is provided with a seventh valve 5 and an eighth valve 6 at intervals, the standby purification device outlet pipe 33 is provided with a ninth valve 12 and a tenth valve 13 at intervals, and the third valve 10, the fourth valve 11, the fifth valve 22, the sixth valve 23, the seventh valve 5, the eighth valve 6, the ninth valve 12 and the tenth valve 13 are all made of stainless steel materials.

The nitrogen gas replacement device comprises a replacement component, and is characterized by further comprising a first replacement nitrogen gas pipe 42, a second replacement nitrogen gas pipe 43, a first replacement nitrogen gas valve 14, a second replacement nitrogen gas valve 15 and a replacement nitrogen gas main pipe 44, wherein one side, far away from the first valve 3, of the second valve 4 is provided with the first replacement nitrogen gas pipe 42, one end of the first replacement nitrogen gas pipe 42 is connected with a main purification device inlet pipe 29, the other end of the first replacement nitrogen gas pipe 42 is connected with the replacement nitrogen gas main pipe 44 which is horizontally arranged, one side, far away from the third valve 10, of the fourth valve 11 is provided with the second replacement nitrogen gas pipe 43, one end of the second replacement nitrogen gas pipe 43 is connected with a standby purification device inlet pipe 32, the other end of the second replacement nitrogen gas valve 15 is connected with the replacement nitrogen gas main pipe 44, the first replacement nitrogen gas pipe 42 is provided with the first replacement nitrogen gas valve 14, the second replacement nitrogen gas pipe 43 is provided with the second replacement nitrogen gas valve 15, and the first replacement nitrogen gas valve 14, the second replacement nitrogen gas valve 14 and the replacement stainless steel main pipe 44 are all replaced by adopting the replacement nitrogen gas material.

The one side that first replacement nitrogen trachea 42 kept away from second valve 4 is provided with first pipeline 40, be provided with first online pressure differential detector 49 on the first pipeline 40, the one end of first pipeline 40 is connected with main purifier import pipe 29, the other end of first pipeline 40 is connected with purifier export house steward 31, the one side that second replacement nitrogen trachea 43 kept away from fourth valve 11 is provided with second pipeline 41, be provided with second online pressure differential detector 50 on the second pipeline 41, second pipeline 41 one end is connected with reserve purifier import pipe 32 the other end of second pipeline 41 is connected with purifier export house steward 31, the other end of purifier export house steward 31 is connected with acetylene gas export house steward 35, be provided with outlet valve 8 on the purifier export house steward 31, outlet valve 8 keep away from one side of acetylene gas export house steward 35 be provided with purifier export 31 connected fourth pressure detector 9, first pipeline 40, second pipeline 41 and export 41 adopt stainless steel.

In this embodiment, before the crude acetylene gas is purified, the main purification device and the standby purification device need to be replaced with nitrogen before the crude acetylene gas is purified, so that no air is in the purification device, the first valve 3, the second valve 4, the third valve 10 and the fourth valve 11 are closed, the first replacement nitrogen valve 14, the second replacement nitrogen valve 15, the fifth valve 22 and the sixth valve 23 are opened, the nitrogen in the replacement nitrogen manifold 44 is transferred to the main purification device 1 and the standby purification device 2 through the first replacement nitrogen pipe 42 and the second replacement nitrogen pipe 43 respectively, the air in the devices is replaced, and the air is discharged through the first replacement sewage drain pipe 45 and the second replacement sewage drain pipe 46, so that the nitrogen replacement before the purification is completed.

When crude acetylene gas enters, the first replacement nitrogen valve 14, the second replacement nitrogen valve 15 and the bypass valve 51 are closed, the outlet valve 8 is firstly opened, the inlet valve 7 is then opened, the crude acetylene gas is transmitted to the inlet manifold 28 of the purifying device through the inlet manifold 27 of the acetylene, the first valve 3 and the second valve 4 are opened, the crude acetylene gas enters the main purifying device 1 through the inlet pipe 29 of the main purifying device for starting purification, the crude acetylene gas is adsorbed and purified through the seasoning 48 in the main purifying device 1, the fifth valve 22 is opened, purified sewage is discharged through the first replacement blow-off pipe 45, the seventh valve 5 and the eighth valve 6 are opened, purified acetylene gas is discharged to the outlet manifold 31 of the purifying device through the outlet pipe 30 of the main purifying device, purified acetylene gas enters a vinyl chloride workshop through the outlet valve 8, the first online pressure detector 49 detects the pressure difference before and after the main purifying device 1 is purified in the purifying process, and is remotely transmitted to a computer through a DCS system, when the pressure difference is observed to be more than 0.5MPa, the purifying device 2 is switched to perform dispersion control when workers observe the pressure difference is more than 0.5MPa, which is a redundant system in the prior art;

starting the standby purification device 2 requires closing the first valve 3 and the second valve 4, opening the third valve 10 and the fourth valve 11, transmitting crude acetylene gas from the purification device inlet manifold 28 to the standby purification device inlet manifold 32, performing adsorption purification through a filler 48 in the standby purification device 2, opening the sixth valve 23, discharging purified sewage through the second replacement blow-off pipe 46, opening the ninth valve 12 and the tenth valve 13, discharging purified acetylene gas to the purification device outlet manifold 31 through the main and standby purification device outlet pipes 33, introducing the purified acetylene gas into a vinyl chloride workshop through the outlet valve 8, detecting the pressure difference before and after purification of the standby purification device 2 in the purification process of the standby purification device 2, remotely transmitting the pressure difference to a computer through a DCS system, and stopping working when a worker observes that the pressure difference is greater than 0.5MPa, and overhauling the main purification device 1 and the standby purification device 2.

In the normal purification process of the main purification device 1 or the standby purification device 2, the third online pressure detector 25 can detect the pressure in the purification device inlet manifold 28 in real time, if the pressure in the purification device inlet manifold 28 is less than or equal to 0.02MPa, the safety valve 20 can automatically open and release pressure, after the pressure release is finished, the safety valve is automatically closed, if the pressure in the purification device inlet manifold 28 is greater than 0.02MPa, the rupture disk 17 automatically bursts and releases pressure, so that the pressure in the system is ensured to be in a normal operation range.

Before maintenance is started, residual acetylene gas is required to be replaced in the main purification device 1 and the standby purification device 2, the inlet valve 7, the outlet valve 8, the fifth valve 22, the sixth valve 23, the purification device bypass pipe 34, the root valve 16 and the safety front valve 19 are closed, the first replacement exhaust valve 18 is opened, the first valve 3, the second valve 4, the third valve 10, the fourth valve 11, the first replacement nitrogen valve 14 and the second replacement nitrogen valve 15 are opened, the acetylene gas is sent to the first replacement pipe 37 due to high pressure of nitrogen and is transmitted to the high-point exhaust pipe 24 through the pressure relief main pipe 39 to be exhausted to the atmosphere, and the acetylene gas is expelled out of the system by utilizing nitrogen, so that the acetylene gas content in the system is lower than an index value, the dangerous gas content in the system is ensured to be lower, and no danger exists in fire and personnel entering operation.

It should be noted that, the first online differential pressure detector 49, the second online differential pressure detector 50, the third online differential pressure detector 25 and the fourth online differential pressure detector 9 are all remotely transmitted to the computer through the DCS system, which is a distributed control system, and is not described in detail herein.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, may be internal to the two elements or in an interaction relationship between the two elements, unless otherwise specifically defined. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The utility model provides a purifier of carbide method acetylene gas, its characterized in that, includes main purifier (1) and reserve purifier (2), main purifier (1) with the top of reserve purifier (2) is connected with purifier access manifold (28) through main purifier access pipe (29) and reserve purifier access pipe (32) interval respectively, purifier access manifold (28) keep away from one side interval connection blasting pressure release subassembly and safe pressure release subassembly of main purifier access pipe (29), main purifier access pipe (29) with reserve purifier access pipe (32) all are connected with the replacement nitrogen gas subassembly, the lower part of main purifier (1) with the lower part of reserve purifier (2) is connected with purifier access manifold (31) through main purifier access pipe (30) and reserve purifier access pipe (33) interval respectively, all be provided with filler (48) in main purifier (1) and the reserve purifier (2).

2. The purifying device for acetylene gas by calcium carbide process according to claim 1, wherein the bottom of the main purifying device (1) is connected with a first replacement blow-off pipe (45), and the bottom of the standby purifying device (2) is connected with a second replacement blow-off pipe (46).

3. The purifying device for acetylene gas by calcium carbide process according to claim 2, wherein the purifying device inlet manifold (28) is connected with an acetylene inlet manifold (27) horizontally arranged through a first three-way connecting piece, two connecting ends of the first three-way connecting piece are respectively connected with the purifying device inlet manifold (28) and the acetylene inlet manifold (27), the other end of the first three-way connecting piece is connected with one end of a purifying device bypass pipe (34), the other end of the purifying device bypass pipe (34) is connected with an acetylene gas outlet manifold (35) through a second three-way connecting piece, two connecting ends of the second three-way connecting piece are respectively connected with the purifying device bypass pipe (34) and the acetylene gas outlet manifold (35), the other end of the second three-way connecting piece is connected with the purifying device outlet manifold (31), and a bypass valve (51) is arranged on the purifying device bypass pipe (34).

4. A purification device for acetylene gas according to claim 3, characterized in that a purification device inlet valve (7) is provided on the side of the purification device inlet manifold (28) close to the acetylene inlet manifold (27), and a third on-line pressure detector (25) connected to the purification device inlet manifold (28) is provided on the side of the purification device inlet valve (7) away from the acetylene inlet manifold (27).

5. The device for purifying acetylene gas by calcium carbide method according to claim 4, wherein the explosion pressure release assembly comprises a root valve (16), a rupture disk (17) and an explosion pressure release pipe (36), wherein one side, far away from the inlet valve (7) of the purifying device, of the third online pressure detector (25) is provided with the explosion pressure release pipe (36), one end of the explosion pressure release pipe (36) is connected with the inlet manifold (28) of the purifying device, the other end of the explosion pressure release pipe (36) is connected with one end of the pressure release manifold (39), the other end of the pressure release manifold (39) is connected with a high-point blow-down pipe (24), one end, close to the inlet manifold (28) of the purifying device, of the explosion pressure release pipe (36) is provided with the root valve (16), and one side, far away from the inlet manifold (28), of the root valve (16) is provided with the rupture disk (17).

6. The purifying device for acetylene gas by calcium carbide process according to claim 5, wherein a flame arrester (26) is connected to the top of the high-point blow-down pipe (24).

7. The purification device for acetylene gas by calcium carbide method according to claim 6, wherein the safety pressure relief assembly comprises a first replacement pipe (37), a first replacement relief valve (18), a safety pipeline (47), a safety valve front valve (19), a safety valve (20) and a safety valve rear valve (21), the first replacement pipe (37) is arranged on one side, far away from the third online pressure detector (25), of the blasting relief pipe (36), one end of the first replacement pipe (37) is connected with an inlet manifold (28) of the purification device, the other end of the first replacement pipe (37) is connected with one end of a safety relief pipe (38), the other end of the safety relief pipe (38) is connected with the pressure relief manifold (39), the first replacement relief valve (18) is arranged on the first replacement relief pipe (37), one side, far away from the safety pipeline (38), of the other end (47) is connected with one end of the safety pipeline (47), the safety valve (47) is connected with the safety valve (20) and the safety valve rear valve (38), and the safety valve rear valve (21) are sequentially arranged along the length of the safety pipeline (38).

8. The purifying device for acetylene gas by calcium carbide process according to claim 7, wherein a first valve (3) and a second valve (4) are arranged on an inlet pipe (29) of the main purifying device at intervals, a third valve (10) and a fourth valve (11) are arranged on an inlet pipe (32) of the standby purifying device at intervals, a fifth valve (22) is arranged on a first replacement blow-down pipe (45), a sixth valve (23) is arranged on a second replacement blow-down pipe (46), a seventh valve (5) and an eighth valve (6) are arranged on an outlet pipe (30) of the main purifying device at intervals, and a ninth valve (12) and a tenth valve (13) are arranged on an outlet pipe (33) of the standby purifying device at intervals.

9. The device for purifying acetylene gas by calcium carbide process according to claim 8, further comprising a displacement assembly, wherein the displacement assembly comprises a first displacement nitrogen pipe (42), a second displacement nitrogen pipe (43), a first displacement nitrogen valve (14), a second displacement nitrogen valve (15) and a displacement nitrogen main pipe (44), the first displacement nitrogen pipe (42) is arranged on one side of the second valve (4) far away from the first valve (3), a main purification device inlet pipe (29) is connected to one end of the first displacement nitrogen pipe (42), the displacement nitrogen main pipe (44) is connected to the other end of the first displacement nitrogen pipe (42), the second displacement nitrogen pipe (43) is arranged on one side of the fourth valve (11) far away from the third valve (10), the standby purification device inlet pipe (32) is connected to one end of the second displacement nitrogen pipe (43), the displacement nitrogen main pipe (44) is horizontally arranged on the other end of the second displacement nitrogen valve (15), and the first displacement nitrogen pipe (42) is provided with the second displacement nitrogen valve (43).

10. The purifying device for acetylene gas by calcium carbide process according to claim 9, wherein a first pipeline (40) is arranged on one side of the first replacement nitrogen pipe (42) far away from the second valve (4), a first online pressure difference detector (49) is arranged on the first pipeline (40), one end of the first pipeline (40) is connected with the main purifying device inlet pipe (29), the other end of the first pipeline (40) is connected with the purifying device outlet main pipe (31), a second pipeline (41) is arranged on one side of the second replacement nitrogen pipe (43) far away from the fourth valve (11), a second online pressure difference detector (50) is arranged on the second pipeline (41), one end of the second pipeline (41) is connected with the standby purifying device inlet pipe (32), the other end of the second pipeline (41) is connected with the purifying device outlet main pipe (31), the other end of the purifying device outlet (31) is connected with the gas outlet main pipe (35), the second replacement nitrogen pipe (43) is arranged on one side of the fourth valve (11) far away from the acetylene outlet main pipe (31), and the acetylene outlet main pipe (8) is connected with the purifying device outlet main pipe (35).

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