CN1230438C - Low temperature and low pressure phosphine alkane trap and phosphine alkane preparing process - Google Patents
Low temperature and low pressure phosphine alkane trap and phosphine alkane preparing process Download PDFInfo
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- CN1230438C CN1230438C CN 02114609 CN02114609A CN1230438C CN 1230438 C CN1230438 C CN 1230438C CN 02114609 CN02114609 CN 02114609 CN 02114609 A CN02114609 A CN 02114609A CN 1230438 C CN1230438 C CN 1230438C
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Abstract
The present invention relates to a low-temperature and low-pressure phosphine alkane catch device and a preparing process thereof. The device comprises a purifier and a catcher which are horizontally connected with each other, wherein the catcher is connected with a second horizontal receiver, and the receiver is connected with a third horizontal surge tank in a two-way and reversible mode. The receiver is connected with a gasifier, a purifier is connected with an inlet heater, and the inlet heater is connected with an inlet surge tank. A diaphragm compressor is serially connected between the inlet surge tank and an outlet surge tank, the outlet surge tank is connected with an outlet heater, and the inlet surge tank is connected with a liquid collection tank. Both ends of the liquid collection tank are respectively connected with a user vacuum pump or a residual liquid processing device, an outlet of the receiver or the surge tank is connected with a product user bottle, and the catcher is connected with a residual gas vacuum pump. The preparing process mainly comprises two-stage purification phosphine alkane of condensation at a low temperature and low pressure and vacuum liquid nitrogen freezing. The catch device has the characteristics of compact structure, continuous work, isolation operation of a phosphine alkane system and a nitrogen system and change of vacuum operation, and is suitable for separation devices of oil field gas, natural liquid gas, etc.
Description
One, technical field
The present invention relates to device and preparation technology thereof that low-temp low-pressure captures phosphine alkane, also be suitable for and separate oil, Sweet natural gas, coke(oven)gas, the cracking chemical separation of synthetic ammonia etc.
Two, background technology
Phosphine alkane is the main raw material of producing the organic phosphine catalyzer; the higher alcohols full scale plant needs catalyzer supporting with it; and higher alcohols are main raw materials of making nonionic surface active agent, use nonionogenic tenside can alleviate China's water body phosphine and pollute, thus protection China river water quality.
Existing mainly contain transformation absorption about the method for " purifying gas " both at home and abroad, three kinds of methods such as membrane sepn and deep cooling, because phosphine alkane is a kind of explosive inflammable and highly toxic substance is arranged, the phosphine alkane concentration that allows in the environment is wanted＜0.3mg/m
3, therefore, must the strict N that controls the sepn process discharging
2In phosphine alkane concentration.Flow process requires the collection efficiency of trapping system to reach 99%, be difficult to reach this index and requirement with membrane separation process, if flow process adopts pressure swing absorption process, at first to seek or develop sorbent material, and want multistage absorption just might satisfy the flow process requirement, so not only make whole flow process complicated and tediously long but also increased facility investment.Again it, phosphine alkane purification workshop section is a negative-pressure operation, purifies phosphine alkane with transformation absorption and membrane separating method and must pass through just can be transported in user's storage tank after boosting and store.This makes whole flow process have more complicated and unsafe defective, and the collection efficiency of flow process does not reach requirement yet simultaneously.
All is to adopt transformation absorption or rectification method produce required material with the data of optical disk library searching to relevant patent and the involved flow process of document according to international online, and its technological line is all inequality with technical solution of the present invention.
Three, technology contents
The invention provides a kind of low-temp low-pressure condensation one vacuum liquid nitrogen freezing the two poles of the earth purification phosphine alkane device and preparation technology.Because of the raw material that enters phosphine alkane low-temp low-pressure capturing device contains impurity, desire to produce highly purified phosphine alkane, need remove impurity such as the water in the raw material, nitrogen, could guarantee that collection efficiency is more than 99%.For this reason, technical scheme of the present invention is achieved in that the device that it adopts comprises by trapping system, heating system, liquid nitrogen system, instrumental system and valve, piping system is formed, invention part of the present invention is that cleaner links to each other with trap, trap links to each other with receptor again, surge tank and reversible two-way linking to each other of receptor, receptor has connected a gasifier again, cleaner is connected with the import well heater again, the import well heater links to each other with the import surge tank again, the import surge tank is connected in series a membrane compressor with the centre of outlet surge tank, the outlet surge tank links to each other with the outlet well heater again, the import surge tank also links to each other with the liquid collecting jar, the outlet well heater links to each other with another trap and cleaner again, the two ends of liquid collecting jar link to each other with the raffinate treatment facility with user's vacuum pump respectively, trap connects the residual gas vacuum pump, and receptor or surge tank connect the product user bottle.All be to be connected in series between the above-mentioned said equipment by valve and pipeline.
Low-temp low-pressure captures the preparation technology of the device of phosphine alkane, and it carries out successively according to the following steps:
I. from the (LN of liquid nitrogen system
2) enter the pre-cold trap of liquid nitrogen interlayer in the trap by utilidor through the T201 valve, gas nitrogen process T203 valve after the evaporation, T-205 valve enter the precooling cleaner in pipe in the cleaner, gas nitrogen process T-311 valve after the re-heat enters the import well heater in the heating system, enters then in the import surge tank in the heating system.
II. will contain PH
3, H
2O, N
2, O
2, C
7H
8, C
8H
12Deng mixed gas at 380-410T
OrrPressure down enter the good cleaner shell-side of precooling, the H in the charging through the T101 valve
2O and CH heavy constituent be frozen in cleaner 1 on tube outer surface, and PH
3, N
2, O
2Enter in the interior straight tube of trap through T103 valve and T105 valve at low temperatures, on the surface of interior straight tube and fin, high boiling PH
3Component cooling, condensation, and finally on the interior straight tube of trap and fin internal surface, freeze to solidify, and N
2, O
2Low boiling component drains into user's residual gas vacuum pump through the T109 valve;
III. in order to guarantee the operate continuously of technology, this device adopts two isostructural cleaners and two isostructural traps to form switched system jointly.
IV. working as highly purified phosphine alkane is solidificated on the interior straight tube and fin surface of trap, in order to obtain product phosphine alkane, will start heating system this moment, just the gas nitrogen that is stored in the import surge tank 4 is sucked in the laggard inlet/outlet surge tank of supercharging by molding machine, enter the outlet well heater through the T304 valve then, High Temperature Gas nitrogen enters again in the trap liquid nitrogen interlayer through the T305 valve and heats, and solid phosphine alkane was recycled High Temperature Gas nitrogen and heated and be molten into gas, liquid two-phase then this moment, simultaneously LN
2In pipe, remove the precooling receptor by utilidor through what the T200 valve entered receptor, make receptor be in low temperature, vacuum state, when the pressure in the trap reaches 0.1Mpa, the phosphine alkane of gas phase enters in the receptor through T107 valve and T111 valve, when the pressure in the trap equates with the pressure of receptor, discharge finishes, and the trap after discharge finishes then switches to the pre-cold state of liquid nitrogen once more, has got a round-robin ready and has captured operation:
V. the High Temperature Gas nitrogen from heating system enters receptor around pipe internal heating solid phosphine alkane through T305 valve, T201 valve, T200 valve, make it become gas-liquid two-phase, opening the T117 valve simultaneously devotes oneself to work phosphine alkane gasifier, at this moment, the pressure of receptor increases rapidly, its pressure reaches 2.0-2.5Mpa, and high-purity phosphine alkane product is sent into the product user bottle through T112 and T113 valve.
VI. heat through the outlet well heater from the gas nitrogen in the heating system, the High Temperature Gas nitrogen of this moment enters cleaner around pipe internal heating solid H through the T309 valve
2O, C
7H
8, C
8H
12Make it fusing, raffinate advances in the liquid collecting jar through the F101 valve, regularly utilizes the gas nitrogen process T114 valve in the heating system, and the F103 valve enters user's treatment facility with raffinate
Four, description of drawings
Fig. 1 arranges synoptic diagram for flow process of the present invention is three-dimensional;
Fig. 2 is a flow process floor plan principle schematic of the present invention;
Fig. 3 is a receiver architecture diagrammatic cross-section of the present invention;
Fig. 4 is a trap diagrammatic cross-section of the present invention.
Five, embodiment
Accompanying drawing is specific embodiments of the invention
Below in conjunction with accompanying drawing content of the present invention is described further:
Embodiment 1
Shown in Figure 1, cleaner 1 links to each other with trap 2 same levels, and trap 2 is connected with the receptor 3 of second level, and receptor 3 links to each other with surge tank 4 bidirectional reversibles of the 3rd level again.
Fig. 2 is the flow process floor plan principle schematic of Fig. 1, this figure connects to form technical process with equipment mutually by pipeline and valve, top one side of its cleaner 1 connects T101 and T102 valve, the parallel T207 that connects respectively of top outlet, T208 and T311, four valves of T312, at T311, be connected with the import of import well heater 6 with pipeline between T312 two valves, the outlet of well heater is connected on import surge tank 4 and the T114 valve, one side of import surge tank 4 connects P300 and T304 valve, the upper end of import surge tank 4 is connected on membrane compressor 8 and the T303 valve by the T301 valve, the outlet of membrane compressor 8 is connected with outlet surge tank 5 one sides by the T302 valve, the lower end of outlet surge tank 5 is connected with the F304 valve, the upper end is connected between P300 and the T304 valve, the T304 valve is connected with outlet well heater 7, the bottom of import surge tank 4 connects the F303 valve, one end of T114 valve is connected with import well heater 6 with import surge tank 4, the other end of T114 valve is connected to the upper end of T115 valve and liquid collecting jar 9, the other end of T115 valve connects user's vacuum pump, the bottom of liquid collecting jar 9 connects raffinate user treatment facility by F103, liquid collecting jar 9 one sides connect F101 and F102 valve, the other end of two valves is connected to the side of cleaner 1 and cleaner 1-1,7 fens two-way of outlet well heater are connected to T305 valve and T306 valve, the entrance end of T306 valve connects the T310 valve, outlet is connected in the outlet of T202 valve, the T306 valve links to each other with the liquid nitrogen import 27 of trap 2, and T107 valve and T108 valve two ends are connected on the pure phosphine alkane air outlet 32 of two traps 2.The T106 valve, the P100 valve, the series connection of T105 valve, two ends are connected with phosphine alkane mixed gas inlet mouth 29, T105 valve and T106 valve are by the T103 valve, the T104 valve is connected on two cleaners 1, the lower port of cleaner 1 is by T206 valve and T205 valve, the T203 valve, the T204 valve inserts on the nitrogen outlet 32 of trap 2, the T107 valve, the T108 valve, the T111 valve inserts a side of receptor 3 upper ends, the upper end is side joint T116 in addition, the T117 valve inserts gasifier 10 and passes through T118 valve and T112 valve, the T113 valve interconnects sends the phosphine alkane of purifying into user's bottle, use T107 between two traps 2, T108, T109, the T110 valve is connected in series and forms the loop, T200 valve one end is connected receptor 3 bottoms, the other end respectively with T201, the T202 valve connects, the T204 valve, be connected in series with F302 valve and F301 valve between the T203 valve, with F302, F301 valve parallel connected T308 valve and T307 valve in addition are equipped with safety valve on trap 2 and surge tank 4.
A side upper and lower part of seeing the urceolus 11 of receptor 3 shown in Figure 3 is established pure phosphine alkane outlet 12 and import 19 respectively, the inner chamber of urceolus 11 is provided with inner core 16, between inside and outside tube, be equipped with around pipe 20, in pipe, walk liquid nitrogen or High Temperature Gas nitrogen, the lower end of urceolus 11 is provided with liquid nitrogen inlet pipe 17, there is the outlet pipe 13 behind the liquid nitrogen gasification upper end, also be provided with gauge manifold 14 simultaneously, go the liquid phosphine alkane of gasifier 10 take over 18 and supercharging after the phosphine alkane that flows back to take over 15.
Fig. 4 is the trap diagrammatic cross-section, outer straight tube 25 with in straight 24 be connected, pipe 28 under the liquid level meter also is installed between the two, in straight tube 24 be connected with interior straight tube 23 again, in straight tube 23 with fall cup type sleeve 22 and be connected, be provided with between its two fin 21, outer straight tube 25 with in left side installation liquid nitrogen pipe 27 between the straight tube 24, the upper port of trap 2 seals material inlet pipe 29, pure phosphine alkane escape pipe 32, gauge manifold 31, temperature tube (I), blow-down pipe 30, the temperature tube (II) in addition of installation respectively, temperature tube (III) manages 26 on the liquid level meter.Cup type sleeve 22 preparation technologies of the present invention that fall separate opening for feed and bleeding point.
Preparation technology of the present invention
I. enter liquid nitrogen interlayer pre-cold trap 2 in trap 2 by utilidor through the T201 valve from the LN2 of liquid nitrogen system, gas nitrogen process T203 valve after the evaporation, T-205 valve enter the precooling cleaner in pipe in the cleaner 1, gas nitrogen process T-311 valve after the re-heat enters the import well heater 6 in the heating system, enters then in the import surge tank 4 in the heating system;
II. will contain PH
3, H
2O, N
2, O
2, C
7H
8, C
8H
12Deng mixed gas at 380-410T
OrrPressure down enter the good cleaner of precooling 1 shell-side, the H in the charging through the T101 valve
2O and CH heavy constituent be frozen in cleaner 1 on tube outer surface, and PH
3, N
2, O
2Enter in the interior straight tube 23 of trap 2 through T103 valve and T105 valve at low temperatures, on the surface of interior straight tube 23 and fin 21, high boiling PH
3Component cooling, condensation, and finally on the interior straight tube of trap 2 and fin internal surface, freeze to solidify, and N
2, O
2Low boiling component drains into user's residual gas vacuum pump through the T109 valve;
III. in order to guarantee the operate continuously of technology, this device adopts two isostructural cleaners 1 and two isostructural trap 2 common switched systems of forming.
IV. working as highly purified phosphine alkane is solidificated on the interior straight tube 23 and fin 21 surfaces of trap 2, in order to obtain product phosphine alkane, will start heating system this moment, just the gas nitrogen that is stored in the import surge tank 4 is sucked in the laggard inlet/outlet surge tank 5 of supercharging by molding machine 8, enter outlet well heater 7 through the T304 valve then, High Temperature Gas nitrogen enters again in the trap 2 liquid nitrogen interlayers through the T305 valve and heats, and solid phosphine alkane was recycled High Temperature Gas nitrogen and heated and be molten into gas, liquid two-phase then this moment, simultaneously LN
2In pipe, remove precooling receptor 3 by utilidor through what the T200 valve entered receptor 3, make receptor 3 be in low temperature, vacuum state, when the pressure in the trap 2 reaches 0.1Mpa, the phosphine alkane of gas phase enters in the receptor 3 through T107 valve and T111 valve, when the pressure in the trap 2 equates with the pressure of receptor 3, discharge finishes, and 2 of traps after discharge finishes switch to the pre-cold state of liquid nitrogen once more, has got a round-robin ready and has captured operation;
V. the High Temperature Gas nitrogen from heating system enters receptor 3 around pipe internal heating solid phosphine alkane through T305 valve, T201 valve, T200 valve, make it become gas-liquid two-phase, opening the T117 valve simultaneously devotes oneself to work phosphine alkane gasifier 10, at this moment, the pressure of receptor 3 increases rapidly, its pressure reaches 2.0-2.5Mpa, and high-purity phosphine alkane product is sent into the product user bottle through T112 and T113 valve;
VI. heat through outlet well heater 7 from the gas nitrogen in the heating system, the High Temperature Gas nitrogen of this moment enters cleaner 1 around pipe internal heating solid H through the T309 valve
2O, C
7H
8, C
8H
12Make it fusing, raffinate advances in the liquid collecting jar 9 through the F101 valve, regularly utilizes the gas nitrogen process T114 valve in the heating system, and the F103 valve enters user's treatment facility with raffinate.
Embodiment 2, and the outside annexation of above-mentioned Fig. 1-Fig. 4 is constant, only the internal structure of Fig. 3, Fig. 4 is done following improvement:
Outer straight tube 11 its outer high vacuum multiple layer heat insulation structures that adopt of Fig. 3 receptor 3 are still walked liquid nitrogen in pipe, shell-side is accepted the phosphine alkane liquid-gas mixture from trap 2, and keeps its low temperature at-95 ℃--and 105 ℃, low pressure is 360-370Torr.
Straight tube 24 removes among Fig. 4, adopts the high vacuum multiple layer heat insulation structure structure in the cavity between its outer straight tube 25 and the interior straight tube 23, changes former fin 21 into wound tube heat exchanger.In pipe, walk liquid nitrogen or heated pressure nitrogen, increase a pipe in the escape pipe 32 and carry out phosphine alkane liquid discharge, to reduce the liquid nitrogen consumption.
Flow process after aforesaid device internal structure is improved is:
1, for reducing the liquid nitrogen consumption, cleaner 1 top cold zone adopts high vacuum multiple layer heat insulation structure.Low wet N
2Enter from cleaner 1 top, in device, after the pipe re-heat, go out cleaner 1.Cleaner 1 bottom (normal temperature district) is at first entered in parallel feeding, upwards flows then.
2, trap 2 adopts the liquid discharge, utilizes trap and receptor pressure reduction and potential difference with liquid PH
3Drain into receptor, till the pressure equilibrium of trap 2 and receptor 3.
3, the similar trap of receiver architecture also is a high vacuum multiple layer heat insulation structure.It uses the charging PH of cooled with liquid nitrogen condensation from trap
3Liquid-gas mixture, and keep its low temperature-100 ℃ and low pressure 367.3Torr, every complete equipment is joined one of receptor; At non-feed state, the liquid PH of receptor
3Drain into surge tank 4, during discharging, the gas phase of the 1.8Mpa (G) of surge tank 4 is charged into receptor 3, and utilize the potential difference (the receptor discharge outlet is higher than surge tank, sees Fig. 1) of receptor and surge tank that the cryogenic liquids in the receptor 3 are drained into surge tank 4.
4, surge tank: it is used to admit the liquid PH of receptor 3
3Product, and operation is stablized air feed 21.8Mpa (G) downstream; Surge tank 4 is two in every cover, but mobile operation, and certain ability of pouring in down a chimney is arranged; Be the stabilizer internal pressure, in establish spiral coil cooling tube, the peripheral hardware supercharging blower of heating; The operational condition of surge tank 4 is pressed 1.8Mpa (G) pressure, and its corresponding temperature of saturation is-6 ℃, only needs general cold insulation to get final product.
In sum, the present invention compared with prior art, be to adopt low-temp low-pressure condensation-vacuum liquid nitrogen freezing two-stage purification phosphine alkane device and preparation technology thereof first, when purify in the second stage, utilized the difference of nitrogen and phosphine alkane boiling point that phosphine alkane is solidified at low temperatures, under certain vacuum condition, remove these incoagulability impurity, purification efficiency is reached more than 99%.The present invention has compact construction, non-stop run, phosphine methane series system is isolated operation and the characteristics that become vacuum operating with nitrogen system, therefore, is requisite device of purification phosphine alkane and technical process.This invention also can be used and the petrochemical complex full scale plant that separates oil field gas and oil gas; In the tripping device of natural gas liquefaction tripping device and coke(oven)gas, synthetic ammonia etc.This device is if be applied in the synthetic system of 50,000 tons of/year alkylenes higher alcohols industrial installation.The catalyzer of alternative import is realized this catalyzer production domesticization, further this catalyst outlet is earned foreign exchange.Enterprise's year creating benefit can reach more than 200,000,000 yuans.That is to say and utilize the present invention not only can satisfy domestic needs, also can export goods and earn foreign currency.This project has huge economic benefit and social benefit.
Claims (2)
1, a kind of low-temp low-pressure captures the device of phosphine alkane, it is by trapping system, heating system, liquid nitrogen system, instrumental system and valve pipe system form, it is characterized in that cleaner (1) links to each other with trap (2), trap (2) links to each other with receptor (3) again, receptor (3) is connected with surge tank (4) bidirectional reversible, receptor (3) has connected a gasifier (10), cleaner (1) is connected with import well heater (6) again, import well heater (6) links to each other with import surge tank (4) again, import surge tank (4) and the middle membrane compressor (8) that is connected in series that exports surge tank (5), outlet surge tank (5) links to each other with outlet well heater (7) again, import surge tank (4) also links to each other with liquid collecting jar (9), outlet well heater (7) links to each other with another trap (2-1) and another cleaner (1-1) again, the two ends of liquid collecting jar (9) link to each other with the raffinate treatment facility with user's vacuum pump respectively, the outlet of receptor (3) connects the product user bottle, trap (2) connects the residual gas vacuum pump, receptor (3) or surge tank (4) connect the product user bottle, all be to be connected in series between the above-mentioned said equipment by valve and pipeline
Said trap (2) comprises straight tube (24) in the interior connection of outer straight tube (25), in connect again in the straight tube (24) in straight tube (23), interior, in be respectively equipped with liquid nitrogen liquid-inlet pipe or heated pressure nitrogen inlet pipe (27) and liquid level meter between about straight tube and manage (28) down, between interior straight tube (23) and sleeve (22), be equipped with fin (21), in fin (21), connect to fall cup type sleeve (22), outer straight tube (25) with in be high vacuum multiple layer heat insulation structure between straight tin (24), temperature tube (I) is housed respectively in the sleeve (22), phosphine alkane escape pipe (32), temperature tube (II, III), in addition, upper port at trap (2) also is separately installed with gauge manifold (31), blow-down pipe (30), pipe (26) on the liquid level meter, feed-pipe (29), adopt the high vacuum multiple layer heat insulation structure structure between outer straight tube (25) and the interior straight tube (23) in the cavity, be provided with wound tube heat exchanger in the interior straight tube (23), in pipe, walk liquid nitrogen or heated pressure nitrogen, increase a pipe in the escape pipe (32) and carry out phosphine alkane liquid discharge;
Said receptor (3) comprises that the inboard of outer straight tube (11) is equipped with inner core (16), outside disc at inner core has around pipe (20), around pipe (20) lower end is outlet (13) after liquid nitrogen import (17), upper end are liquid nitrogen gasification, be provided with pure phosphine alkane outlet (19) in receptor (3) lower end, the upper end is provided with phosphine alkane import (12), simultaneously also respectively the setting pressure table take over the PH that (14), supercharging are flowed back to
3Take over (15), remove the liquid PH of vaporizer (10)
3Take over (18);
Said cleaner (1) and receptor (3) are to adopt high vacuum multiple layer heat insulation structure;
Be provided with spiral coil cooling tube in the said surge tank (4), be provided with the heating supercharging blower outward.
2, a kind of preparation technology who uses the described low-temp low-pressure of claim 1 to capture the device of phosphine alkane is characterized in that carrying out according to the following steps successively:
I. from the LN of liquid nitrogen system
2Enter the pre-cold trap of liquid nitrogen interlayer (2) in the trap (2) by utilidor through (T201) valve, gas nitrogen process (T203) valve after the evaporation, (T-205) valve enter the precooling cleaner in pipe in the cleaner (1), gas nitrogen process (T-311) valve after the re-heat enters the import well heater (6) in the heating system, enters then in the import surge tank (4) in the heating system;
II. will contain PH
3, H
2O, N
2, O
2, C
7H
8, C
8H
12Mixed gas under the pressure of 380 * 133.3Pa-410 * 133.3Pa, enter the good cleaner of precooling (1) shell-side, the H in the charging through (T101) valve
2O and CH heavy constituent be frozen in cleaner (1) on tube outer surface, and PH
3, N
2, O
2Pass through at low temperatures (T103) valve and (T105) valve enter in the interior straight tube (23) of trap (2), on the surface of interior straight tube (23) and fin (21), high boiling PH
3Component cooling, condensation, and finally on the interior straight tube of trap (2) and fin internal surface, freeze to solidify, and N
2, O
2Low boiling component drains into user's residual gas vacuum pump through (T109) valve;
III. in order to guarantee the operate continuously of technology, this device adopts two isostructural cleaners (1) and two isostructural traps (2) to form switched system jointly;
IV. working as highly purified phosphine alkane is solidificated on the interior straight tube (23) and fin (21) surface of trap (2), in order to obtain product phosphine alkane, will start heating system this moment, just the gas nitrogen that is stored in the import surge tank (4) is sucked in the laggard inlet/outlet surge tank of supercharging (5) by molding machine (8), pass through (T304) valve then and enter outlet well heater (7), High Temperature Gas nitrogen enters again in trap (2) the liquid nitrogen interlayer through (T305) valve and heats, solid phosphine alkane was recycled High Temperature Gas nitrogen and heated and be molten into gas, liquid two-phase then this moment, simultaneously LN
2In pipe, remove the precooling receptor by utilidor through what (T200) valve entered receptor (3), make receptor be in low temperature, vacuum state, when the pressure in the trap (2) reaches 0.1Mpa, the phosphine alkane of gas phase through (T107) valve and (T111) valve enter in the receptor (3), when the pressure in the trap (2) equates with the pressure of receptor (3), discharge finishes, and the trap (2) after discharge finishes then switches to the pre-cold state of liquid nitrogen once more, has got a round-robin ready and has captured operation;
V. the High Temperature Gas nitrogen from heating system enters receptor (3) around pipe internal heating solid phosphine alkane through (T305) valve, (T201) valve, (T200) valve, make it become gas one liquid two-phase, opening (T117) valve simultaneously devotes oneself to work phosphine alkane gasifier (10), at this moment, the pressure of receptor (3) increases rapidly, its pressure reaches 2.0-2.5Mpa, high-purity phosphine alkane product through (T112) and (T113) valve send into the product user bottle;
VI. heat through outlet well heater (7) from the gas nitrogen in the heating system, the High Temperature Gas nitrogen of this moment enters cleaner (1) around pipe internal heating solid H through (T309) valve
2O, C
7H
8, C
8H
12Make it fusing, raffinate advances in the liquid collecting jar (9) through (F101) valve, regularly utilizes gas nitrogen process (T114) valve in the heating system, and (F103) valve enters user's treatment facility with raffinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02114609 CN1230438C (en) | 2002-06-04 | 2002-06-04 | Low temperature and low pressure phosphine alkane trap and phosphine alkane preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02114609 CN1230438C (en) | 2002-06-04 | 2002-06-04 | Low temperature and low pressure phosphine alkane trap and phosphine alkane preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1384107A CN1384107A (en) | 2002-12-11 |
| CN1230438C true CN1230438C (en) | 2005-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02114609 Expired - Fee Related CN1230438C (en) | 2002-06-04 | 2002-06-04 | Low temperature and low pressure phosphine alkane trap and phosphine alkane preparing process |
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| CN (1) | CN1230438C (en) |
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| CN104925774B (en) * | 2015-06-17 | 2017-03-08 | 上海正帆科技有限公司 | A kind of synthesis of electron level phosphine and purifying plant and method |
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