CN100432031C - Process and apparatus for separating mixed solution of liquid petrolatum and xylene - Google Patents
Process and apparatus for separating mixed solution of liquid petrolatum and xylene Download PDFInfo
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- CN100432031C CN100432031C CNB2006100706655A CN200610070665A CN100432031C CN 100432031 C CN100432031 C CN 100432031C CN B2006100706655 A CNB2006100706655 A CN B2006100706655A CN 200610070665 A CN200610070665 A CN 200610070665A CN 100432031 C CN100432031 C CN 100432031C
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Abstract
The present invention discloses process and apparatus for separating mixed solution of liquid petrolatum and xylene. The process includes the following steps: leading the mixed solution of liquid petrolatum and xylene into thin film evaporator, heating the mixed liquid, leading liquid petrolatum into liquid petrolatum storage tank, cooling gaseous xylene in the condesator, leading the liquefied xylene to xylene storage tank, and returning the separated liquid petrolatum and xylene separately to the dissolving tank and the extracting tank in the production line. The apparatus for separating mixed solution of liquid petrolatum and xylene consists of a thin film evaporator, a liquid petrolatum recovering tank, pipelines, a condensator, a suction pump, a liquefied xylene recovering tank and an oil furnace. The present invention is automatic and has no pollution and capacity of lowering the production cost of ultrahigh molecular weight polyethylene.
Description
Technical field
The present invention relates to employed lysate and the separation method of extraction agent mixing solutions and the separating device of special use in superhigh molecular weight polyethylene fibers is produced, particularly a kind of white mineral oil and dimethylbenzene mixing solutions separation method and specific equipment.
Background technology
At present in the world with superhigh molecular weight polyethylene fibers, carbon fiber with spin the synthetic fibre fiber and be called three big high performance fibre material, wherein superhigh molecular weight polyethylene fibers has high strength, high-modulus, low-density characteristics, in the high-ductility light composite material, demonstrate great advantage, bringing into play important role aspect modernized war and defend equipment, aerospace and the aviation, also obtained application more and more widely at civil area, therefore, this fiber of development and application is significant.In the operation of producing superhigh molecular weight polyethylene fibers, adopt white mineral oil to dissolve the ultrahigh molecular weight polyethylene(UHMWPE) spinning solution as lysate, behind the extruding spinning bundle, because tow contains white mineral oil, so pass through extraction process, slough white mineral oil, employed extraction agent is a dimethylbenzene, like this, and in process of production, dimethylbenzene in the extraction tank just dissolves the white mineral oil in the hygrometric state precursor, thereby has produced white mineral oil and dimethylbenzene mixing solutions.For the treatment process of white mineral oil and dimethylbenzene mixing solutions, mostly as waste treatment, what also have separates at present, and its separation method is that the cauldron heating makes its separation, no specific equipment.The deficiency that these treatment processs exist is: the one, the mixing solutions of white mineral oil and dimethylbenzene as waste treatment, can be caused raw-material significant waste and environmental pollution; The 2nd, because the price of white mineral oil and dimethylbenzene is higher, as can not get recycling, can cause the raising of production cost; The 3rd, use the cauldron heating and separating, though can carry out Separation and Recovery, discontinuous with production process, reclaim inconvenience, insufficient, and complicated operation.
Summary of the invention
The object of the present invention is to provide a kind of above the deficiencies in the prior art that overcome, be beneficial to and reduce the superhigh molecular weight polyethylene fibers production cost, a kind of white mineral oil and the dimethylbenzene mixing solutions separation method that make white mineral oil can in the continuous production operation, fully separate with the mixing solutions of dimethylbenzene, reclaim, also utilize.
Another object of the present invention is to provide the specific equipment of a kind of white mineral oil and dimethylbenzene mixing solutions separation method.
For reaching above purpose, the technical solution adopted in the present invention is: a kind of white mineral oil and dimethylbenzene mixing solutions separation method, described method is carried out in specific equipment described later, and it is characterized in that it is finished by following steps: white mineral oil and dimethylbenzene mixing solutions that (1) will produce in the extraction tank in the superhigh molecular weight polyethylene fibers technological process of production directly import in the thin-film evaporator; (2) white mineral oil and dimethylbenzene mixing solutions are heated, because the boiling point of dimethylbenzene is 138.4 ℃, the boiling point of white mineral oil is 342.7 ℃, Heating temperature surpasses the dimethylbenzene boiling point, be lower than the white mineral oil boiling point, reach the dimethylbenzene vaporization of boiling point, obtain steam state dimethylbenzene, and isolate liquid white mineral oil, no longer contain dimethylbenzene in the white mineral oil thereby make; (3) will reclaim in the isolated liquid white mineral oil importing white mineral oil withdrawing can; (4) steam state dimethylbenzene is cooled off by condenser, be cooled to below the dimethylbenzene boiling point, make dimethylbenzene liquefaction, this cooling temperature can be fully can achieve the goal as recirculated cooling water with the tap water of normal temperature; (5) dimethylbenzene with liquefaction imports in the liquefaction dimethylbenzene withdrawing can; (6) white mineral oil after separating enters in the dissolving case in the production process again, and the liquid dimethyl benzene after the separation enters in the extraction tank in the production process again.
The specific equipment of a kind of white mineral oil and dimethylbenzene mixing solutions separation method, it is characterized in that it is by thin-film evaporator, the white mineral oil withdrawing can, white mineral oil and dimethylbenzene mixing solutions input tube, vaporization dimethylbenzene output tube, condenser, off-gas pump, liquefaction dimethylbenzene withdrawing can, oil oven constitutes, connect the white mineral oil withdrawing can in the bottom of thin-film evaporator, connect white mineral oil and dimethylbenzene mixing solutions input tube in the left upper portion of thin-film evaporator, white mineral oil and dimethylbenzene mixing solutions input tube insert in the chamber of thin-film evaporator, connect vaporization dimethylbenzene output tube in the right upper portion of thin-film evaporator, the outer end of vaporization dimethylbenzene output tube is connected with the vaporization dimethylbenzene input aperture on the top of condenser, top, outer end at condenser connects off-gas pump by conduit, bottom, outer end at condenser connects liquefaction dimethylbenzene withdrawing can by output duct, white mineral oil and dimethylbenzene mixing solutions are input to the inner chamber of thin-film evaporator from the top of thin-film evaporator, by heating, make its temperature be higher than the dimethylbenzene boiling point, the dimethylbenzene vaporization, separate with white mineral oil, liquid white mineral oil flows into downwards in the white mineral oil withdrawing can, the dimethylbenzene of vaporization enters in the condenser by vaporization dimethylbenzene output tube, be cooled to be lower than the boiling point of dimethylbenzene, the liquefaction of vaporization dimethylbenzene, dimethylbenzene after the liquefaction flows into downwards in the liquefaction dimethylbenzene withdrawing can, and oil oven is connected with thin-film evaporator with used oil pipe by oil inlet pipe.The present invention also implements by following measure: described thin-film evaporator, by the thin-film evaporator housing, rotation axis, the centrifugal plate of umbrella shape, scraper plate, reducing motor constitutes, in the wall of thin-film evaporator housing is the interlayer heating chamber, connect oil inlet pipe in the bottom of interlayer heating chamber, connect used oil pipe on the top of interlayer heating chamber, oil inlet pipe and used oil pipe are connected with oil oven again, by oil oven turning oil is heated, make the inner chamber heating of thin-film evaporator, in the chamber of thin-film evaporator, be provided with rotation axis, the upper end of rotation axis is connected with the main drive shaft of reducing motor above being fixed on the thin-film evaporator housing, fix the centrifugal plate of umbrella shape on the top of the intravital rotation axis of thin-film evaporator shell, on the upper face of the centrifugal plate of umbrella shape, be provided with radially batten, middle part at the centrifugal plate of umbrella shape is provided with ventpipe, rotation by the centrifugal plate of umbrella shape, can get rid of on the inwall of thin-film evaporator flowing to the white mineral oil above the centrifugal plate of umbrella shape and the mixing solutions of dimethylbenzene, middle and lower part at rotation axis is provided with scraper plate, scraper plate can symmetricly be established four, because white mineral oil and dimethylbenzene mixing solutions have certain viscosity, like this, when rotation axis rotates, can will get rid of at the white mineral oil on the thin-film evaporator inwall and dimethylbenzene mixing solutions equably on the inwall of blade coating at thin-film evaporator by scraper plate, make it accelerate to separate, isolated vaporization dimethylbenzene can rise from ventpipe, also establish transparent oil mass observation tube on the top of thin-film evaporator housing, and be connected with the interlayer heating chamber, can observe fluid amount in the interlayer heating chamber at any time by transparent oil mass observation tube, so that in time replenish; Described condenser, constitute by condenser shell, prolong, vaporization dimethylbenzene inlet chamber, negative pressure chamber, water inlet pipe, rising pipe, the input terminus of prolong is tightly connected with vaporization dimethylbenzene inlet chamber, the output terminal and the negative pressure chamber of prolong are tightly connected, top in negative pressure chamber connects off-gas pump, the bottom connects goes up liquefaction dimethylbenzene withdrawing can, makes negative pressure chamber keep negative pressure by off-gas pump, and dimethylbenzene flowing in prolong can help vaporizing; On the oil inlet pipe of oil oven input thin-film evaporator, also establish recycle pump, recycle pump is connected with thermostat by lead, the temperature probe of thermostat inserts in the thin-film evaporator, adjust the rotating speed of recycle pump by thermostat, and then adjust the speed of moving that refluxes of following that heats fluid, thereby the temperature in the control thin-film evaporator.
Beneficial effect of the present invention is: compare with the treatment process of dimethylbenzene mixing solutions with employed white mineral oil in the present superhigh molecular weight polyethylene fibers production, can be with mixing solutions successive, also separation in time, and recycle, avoided raw-material waste; Compare with separating utensil at present, not only simple in structure, easy to use, and under sealed state, carry out, pollution-free, the level of automation height can directly insert in the production process, can not only separate, and flow into automatically in the operation, can reduce the production cost of superhigh molecular weight polyethylene fibers.
Description of drawings
Fig. 1 looks synoptic diagram for the utility model structure master.
Fig. 2 analyses and observe enlarged diagram for the utility model along the thin-film evaporator axis.
Fig. 3 analyses and observe enlarged diagram for the utility model along the condenser axis.
Embodiment
Make specific equipment of the present invention with reference to accompanying drawing 1,2,3.The specific equipment of this white mineral oil and dimethylbenzene mixing solutions separation method, it is characterized in that it is by thin-film evaporator 1, white mineral oil withdrawing can 2, white mineral oil and dimethylbenzene mixing solutions input tube 3, vaporization dimethylbenzene output tube 4, condenser 5, off-gas pump 6, liquefaction dimethylbenzene withdrawing can 7, oil oven 8 constitutes, connect white mineral oil withdrawing can 2 in the bottom of thin-film evaporator 1, connect white mineral oil and dimethylbenzene mixing solutions input tube 3 in the left upper portion of thin-film evaporator 1, white mineral oil and dimethylbenzene mixing solutions input tube 3 insert in the chamber of thin-film evaporator 1, connect vaporization dimethylbenzene output tube 4 in the right upper portion of thin-film evaporator 1, the outer end of vaporization dimethylbenzene output tube 4 is connected with the vaporization dimethylbenzene input aperture on condenser 5 tops, top, outer end at condenser 5 connects off-gas pump 6 by conduit, bottom, outer end at condenser 5 connects liquefaction dimethylbenzene withdrawing can 7 by output duct, oil oven 8 is connected with thin-film evaporator 1 with used oil pipe 10 by oil inlet pipe 9.Described thin-film evaporator 1, by thin-film evaporator housing 1a, rotation axis 1b, the centrifugal plate 1c of umbrella shape, scraper plate 1d, reducing motor 1f constitutes, in the wall of thin-film evaporator housing 1a is interlayer heating chamber 1k, connect oil inlet pipe 9 in the bottom of interlayer heating chamber 1k, connect used oil pipe 10 on the top of interlayer heating chamber 1k, oil inlet pipe 9 and used oil pipe 10 are connected with oil oven 8 again, in the chamber of thin-film evaporator 1, be provided with rotation axis 1b, the upper end of rotation axis 1b is connected with the main drive shaft of reducing motor 1f above being fixed on thin-film evaporator housing 1a, the centrifugal plate 1c of umbrella shape on the top of rotation axis 1b in thin-film evaporator housing 1a is fixing, on the upper face of the centrifugal plate 1c of umbrella shape, be provided with radially batten 1m, middle part at the centrifugal plate 1c of umbrella shape is provided with ventpipe 1n, be provided with scraper plate 1d in the middle and lower part of rotation axis 1b, scraper plate 1d can symmetricly establish four, also establishes transparent oil mass observation tube 11 on the top of thin-film evaporator housing 1a; Described condenser 5, constitute by condenser shell 5a, prolong 5b, vaporization dimethylbenzene inlet chamber 5c, the 5d of negative pressure chamber, water inlet pipe 12, rising pipe 13, the input terminus of prolong 5b is tightly connected with vaporization dimethylbenzene inlet chamber 5c, the output terminal of prolong 5b and the 5d of negative pressure chamber are tightly connected, connect off-gas pump 6 on the top of the 5d of negative pressure chamber, the bottom connects goes up liquefaction dimethylbenzene withdrawing can 7, makes the 5d of negative pressure chamber keep negative pressure by off-gas pump 6, and dimethylbenzene flowing in prolong 5b can help vaporizing; Also establish recycle pump 14 on the oil inlet pipe 9 of oil oven 8 input thin-film evaporators 1, recycle pump 14 is connected with thermostat by lead, and the temperature probe of thermostat inserts in the thin-film evaporator 1.
Embodiment
Use in Aidi High Molecular Material Co., Ltd., Shandong, behind the extraction process in this specific equipment access superhigh molecular weight polyethylene fibers Production Flow Chart, on extraction box, establish white mineral oil and dimethylbenzene mixing solutions outlet pipe, this outlet pipe is connected with dimethylbenzene mixing solutions input tube 3 with white mineral oil on the thin-film evaporator 1, regulating thermostat makes the cavity temperature of thin-film evaporator 1 be higher than the dimethylbenzene boiling point, dimethylbenzene vaporization in thin-film evaporator 1, separate with white mineral oil, isolated white mineral oil flows into downwards in the white mineral oil withdrawing can 2, the white mineral oil that reclaims is sent in the dissolving case again, open off-gas pump 6, under the effect of the 5d of negative pressure chamber, the dimethylbenzene of vaporization flows in the condenser 5, and the temperature in the condenser 5 enters the flow velocity of cold water by control, and the temperature in the condenser 5 are controlled to be below the dimethylbenzene boiling point, at this moment, vaporization dimethylbenzene liquefies in condenser 5, and the dimethylbenzene of liquefaction flows in the liquefaction dimethylbenzene withdrawing can 7, is used further in the extraction process.
Claims (4)
1, the specific equipment of a kind of white mineral oil and dimethylbenzene mixing solutions separation method, it is characterized in that it is by thin-film evaporator (1), white mineral oil withdrawing can (2), white mineral oil and dimethylbenzene mixing solutions input tube (3), vaporization dimethylbenzene output tube (4), condenser (5), off-gas pump (6), liquefaction dimethylbenzene withdrawing can (7), oil oven (8) constitutes, connect upward white mineral oil withdrawing can (2) in the bottom of thin-film evaporator (1), left upper portion at thin-film evaporator (1) connects upward white mineral oil and dimethylbenzene mixing solutions input tube (3), white mineral oil and dimethylbenzene mixing solutions input tube (3) insert in the chamber of thin-film evaporator (1), right upper portion at thin-film evaporator (1) connects upward vaporization dimethylbenzene output tube (4), the outer end of vaporization dimethylbenzene output tube (4) is connected with the vaporization dimethylbenzene input aperture on condenser (5) top, top, outer end at condenser (5) connects upward off-gas pump (6) by conduit, bottom, outer end at condenser (5) connects upward liquefaction dimethylbenzene withdrawing can (7) by output duct, and oil oven (8) is connected with thin-film evaporator (1) with used oil pipe (10) by oil inlet pipe (9).
2, a kind of white mineral oil and dimethylbenzene mixing solutions separation method, described method is to carry out in the equipment of claim 1, it is characterized in that it is finished by following steps:
(1) white mineral oil and the dimethylbenzene mixing solutions that will produce in the extraction tank in ultra high molecular polyethylene fibre manufacturing technique flow process directly imports in the thin-film evaporator;
(2) white mineral oil and dimethylbenzene mixing solutions are heated, Heating temperature surpasses the dimethylbenzene boiling point, is lower than the white mineral oil boiling point, obtains steam state dimethylbenzene, and isolates liquid white mineral oil;
(3) will reclaim in the isolated liquid white mineral oil importing white mineral oil withdrawing can;
(4) steam state dimethylbenzene is cooled off by condenser, be cooled to below the dimethylbenzene boiling point, make dimethylbenzene liquefaction;
(5) dimethylbenzene with liquefaction imports in the liquefaction dimethylbenzene withdrawing can;
(6) white mineral oil after separating enters in the dissolving case in the production process again, and the liquid dimethyl benzene after the separation enters in the extraction tank in the production process again.
3, the specific equipment of white mineral oil according to claim 1 and dimethylbenzene mixed solution separation method, it is characterized in that described thin-film evaporator (1), by thin-film evaporator housing (1a), rotation axis (1b), the centrifugal plate of umbrella shape (1c), scraper plate (1d), reducing motor (1f) constitutes, in the wall of thin-film evaporator housing (1a) is interlayer heating chamber (1k), connect upward oil inlet pipe (9) in the bottom of interlayer heating chamber (1k), connect upward used oil pipe (10) on the top of interlayer heating chamber (1k), oil inlet pipe (9) and used oil pipe (10) are connected with oil oven (8) again, in the chamber of thin-film evaporator (1), be provided with rotation axis (1b), the main drive shaft of the reducing motor (1f) that the upper end of rotation axis (1b) is top with being fixed on thin-film evaporator housing (1a) is connected, the fixing centrifugal plate of umbrella shape (1c) of going up in the top of the rotation axis (1b) in thin-film evaporator housing (1a), on the upper face of the centrifugal plate of umbrella shape (1c), be provided with radially batten (1m), be provided with ventpipe (1n) at the middle part of the centrifugal plate of umbrella shape (1c), be provided with scraper plate (1d) in the middle and lower part of rotation axis (1b), scraper plate (1d) can symmetricly be established four, also establishes transparent oil mass observation tube (11) on the top of thin-film evaporator housing (1a).
4, the specific equipment of white mineral oil according to claim 1 and dimethylbenzene mixed solution separation method, it is characterized in that described condenser (5), constitute by condenser shell (5a), prolong (5b), vaporization dimethylbenzene inlet chamber (5c), negative pressure chamber (5d), water inlet pipe (12), rising pipe (13), the input terminus of prolong (5b) is tightly connected with vaporization dimethylbenzene inlet chamber (5c), the output terminal of prolong (5b) and negative pressure chamber (5d) are tightly connected, connect off-gas pump (6) on the top of negative pressure chamber (5d), the bottom connects goes up liquefaction dimethylbenzene withdrawing can (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100706655A CN100432031C (en) | 2006-12-11 | 2006-12-11 | Process and apparatus for separating mixed solution of liquid petrolatum and xylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100706655A CN100432031C (en) | 2006-12-11 | 2006-12-11 | Process and apparatus for separating mixed solution of liquid petrolatum and xylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1986506A CN1986506A (en) | 2007-06-27 |
| CN100432031C true CN100432031C (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100706655A Active CN100432031C (en) | 2006-12-11 | 2006-12-11 | Process and apparatus for separating mixed solution of liquid petrolatum and xylene |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818387B (en) * | 2009-02-27 | 2012-05-30 | 山东爱地高分子材料有限公司 | Device for recovering extractant for high-strength high-modulus superhigh molecular weight polyethylene fibers |
| CN112048332B (en) * | 2020-10-09 | 2022-07-22 | 陕西天策新材料科技有限公司 | Centrifugal circulation magnetic force driving film evaporator for preparing mesophase pitch-based carbon fiber |
| CN113332742A (en) * | 2021-06-30 | 2021-09-03 | 张婷娟 | Distillation type separation device for white mineral oil and xylene mixed solution |
| CN113648673A (en) * | 2021-08-25 | 2021-11-16 | 张展绍 | White mineral oil and xylene mixed solution separation recovery unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149970Y (en) * | 1993-02-22 | 1993-12-22 | 王雅谷 | Horizontal-spiral centrifugal solid-liquid liquid-liquid separating device |
| CN2481389Y (en) * | 2001-06-24 | 2002-03-13 | 邓昌沪 | Low-temp. evaporating liquid-liquid separator |
| CN200978308Y (en) * | 2006-12-11 | 2007-11-21 | 山东爱地高分子材料有限公司 | Separating and reclaiming device for white petrolatum and xylene |
-
2006
- 2006-12-11 CN CNB2006100706655A patent/CN100432031C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149970Y (en) * | 1993-02-22 | 1993-12-22 | 王雅谷 | Horizontal-spiral centrifugal solid-liquid liquid-liquid separating device |
| CN2481389Y (en) * | 2001-06-24 | 2002-03-13 | 邓昌沪 | Low-temp. evaporating liquid-liquid separator |
| CN200978308Y (en) * | 2006-12-11 | 2007-11-21 | 山东爱地高分子材料有限公司 | Separating and reclaiming device for white petrolatum and xylene |
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| CN1986506A (en) | 2007-06-27 |
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Inventor after: Ren Yi Inventor before: Hu Jianguo Inventor before: Ren Yi |