CN100482716C - Heating system for caprolactam polymerization reaction apparatus - Google Patents
Heating system for caprolactam polymerization reaction apparatus Download PDFInfo
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- CN100482716C CN100482716C CNB2007100215130A CN200710021513A CN100482716C CN 100482716 C CN100482716 C CN 100482716C CN B2007100215130 A CNB2007100215130 A CN B2007100215130A CN 200710021513 A CN200710021513 A CN 200710021513A CN 100482716 C CN100482716 C CN 100482716C
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Abstract
The invention discloses a heating system for caprolactam polymerization reaction device, which includes a reaction cartridge constituted of an upper cartridge and a lower cartridge. A upper supporting plate is disposed in the upper cartridge, through-holes are arranged at both the upper supporting plate and the upper cartridge, and steel pipes are connected to a pair of corresponding through-hole. A distribution cavity is remained at top of the upper supporting plate and the upper cartridge, and caprolactam inlet is arranged at top of the distribution cavity. The lower cartridge is constituted of inner cartridge and outer cartridge to form jacket. Upper end of the inner cartridge is connected with bottom plate of the upper cartridge, a caprolactam outlet is disposed at bottom of the lower cartridge, and heat conductivity oil source is also included in bottom of the lower cartridge. Oil inlet and outlet are both disposed at upper cartridge and lower cartridge, the oil outlets are connected with inlet of the heat conductivity oil source by oil pipe, and the oil inlets are connected with outlet of the heat conductivity oil source by oil pump and valve. Advantages of the heating system are: fire hazard and explosion accident can be avoided, production efficiency is high, cost is low, and the heating system is adapt for heating polymerization reaction device for producing nylon section with caprolactam as raw material.
Description
Technical field
The present invention relates to a kind of heat exchanger.Be specifically with thermal oil to the heating unit that caprolactam polymerization reaction apparatus heats, be applicable to being the heating of the polymerizing reactor of raw material production polyamide fibre section with the hexanolactam.
Background technology
All knowing at the polyamide fibre production industry, at present for being the heating that raw material is produced the polymerizing reactor of polyamide fibre section with the hexanolactam, all is to adopt traditional heating unit.This traditional heating device is made up of top cylinder and doffing.Be provided with upper backup pad in the top cylinder, be the sealing shape around the upper backup pad and be connected with the top cylinder inwall.Through hole is all arranged on the base plate of upper backup pad and top cylinder, and the through hole on the upper backup pad is corresponding one by one with the through hole on the base plate.Between corresponding a pair of through hole steel pipe is arranged all between upper backup pad and base plate, the upper and lower end of the steel pipe outside respectively and be the sealing shape between the respective through hole on upper backup pad and the base plate and link together.Leave the spacing that is used to form distribution cavity between the top of upper backup pad and top cylinder, the hexanolactam import is arranged at the top of distribution cavity.Doffing wherein contains inner core, is the sealing shape between the upper end of inner core and the base plate of top cylinder and links together and all steel pipes are all communicated with doffing.There is urceolus the outside of inner core, and the two leaves the spacing that is used to make doffing barrel formation chuck.The doffing bottom is processed with the hexanolactam outlet.All be filled with heat-conducting medium biphenyl ether in the top cylinder and in the chuck of doffing, and in top cylinder and in the chuck of doffing, electric heating tube be installed.Biphenyl ether wherein is the low molten azeotrope altogether that the biphenyl ether with 26.5% biphenyl and 73.5 mixes, and it has characteristics such as volatile, inflammable, explosive, belongs to poisonous, objectionable impurities.During work, heat-conducting medium biphenyl ether is heated earlier, heat by the steel pipe in the top cylinder and the inner core heat exchange in the doffing hexanolactam again, thereby realize the polymerization of hexanolactam flow through steel pipe and inner core by electric heating tube.Because the heat-conducting medium that traditional heating unit uses is a biphenyl ether, and biphenyl ether has characteristics such as volatile, inflammable, explosive, in case leak easily presence of fire and explosion hazard.Because biphenyl ether belongs to poisonous, objectionable impurities,, can bring harm to staff's health in case leak.Because biphenyl ether is low molten azeotrope altogether, its zero pour is low, just may occur freezing situation below 12.3 ℃ in temperature, opens cold season especially in the winter time, stops, and very easily freezes situation again.In case freeze situation, just need the maintenance that stops production, therefore adopt this heating unit, production efficiency is very low.A side aspect again, because this heating unit adopts electrothermal tube to heat, and the power of electrothermal tube is all more than 150Kw, and one ton of product of every production just needs the 500Kw electricity, and power consumption is many, and production cost is higher.
Summary of the invention
The problem to be solved in the present invention provides a kind of caprolactam polymerization reaction heating unit.Adopt this heating system that hexanolactam is heated, not only can avoid fire and explosion hazard, help staff's health, and can enhance productivity, reduce production costs.
For addressing the above problem, the present invention takes following technical scheme:
Caprolactam polymerization reaction of the present invention contains reaction tube with heating unit, and this reaction tube is cylindrical, and it is made up of top cylinder and doffing.Upper backup pad is arranged in the top cylinder, be the sealing shape around the upper backup pad and be connected with the top cylinder inwall.Through hole is all arranged on the base plate of upper backup pad and top cylinder, and the through hole on the upper backup pad is corresponding one by one with the through hole on the base plate.Between corresponding a pair of through hole steel pipe is arranged all between upper backup pad and base plate, the upper and lower end of the steel pipe outside respectively and be the sealing shape between the respective through hole on upper backup pad and the base plate and link together.Leave the spacing that is used to form distribution cavity between the top of upper backup pad and top cylinder, the hexanolactam import is arranged at the top of distribution cavity.Doffing wherein contains inner core, is the sealing shape between the upper end of inner core and the base plate of top cylinder and links together and all steel pipes are all communicated with doffing.There is urceolus the outside of inner core, and the two leaves the spacing that is used to make doffing barrel formation chuck.There is the hexanolactam outlet doffing lower end, is characterized in also comprising the heat conduction oil sources.All have into and out of hydraulic fluid port on the urceolus barrel of the upper and lower tube of the barrel of top cylinder, oil outlet wherein all links to each other by the import of oil pipe with the heat conduction oil sources, and oil-in then joins by the outlet of oil pump and valve and heat conduction oil sources respectively.Said heat conduction oil sources is a thermo oil boiler.
Said top cylinder is formed by cylindrical shell with as the cavity of distribution cavity.Cylindrical shell is cylindrical, is processed with through hole on its top board, and the cavity of distribution cavity is in this through hole.Said cavity also is cylindrical, and its top is semisphere and is processed with the hexanolactam import, its lower end stretch in the through hole of cylindrical shell top board and itself and through hole between be the sealing shape and link together.There is flat as upper backup pad the lower end of cavity.
Oil-in on oil-in on the top cylinder and the following drum outer wall all is in their bottom one side.
Oil outlet on oil outlet on the top cylinder and the following drum outer wall all has two, and these two oil outlets are in the inner core top of top cylinder and doffing respectively.Wherein, an oil outlet on the top cylinder links to each other with the import of heat conduction oil sources with an oil outlet connection on the following drum outer wall is back, and another oil outlet on another oil outlet on the top cylinder and the following drum outer wall then is connected with the import of corresponding oil pump by oil pipe respectively.
Take such scheme, have the following advantages:
Because caprolactam polymerization reaction of the present invention contains the heat conduction oil sources with heating unit.All have into and out of hydraulic fluid port on the urceolus barrel of the upper and lower tube of the barrel of top cylinder, oil outlet wherein all links to each other by the import of oil pipe with the heat conduction oil sources, and their oil-in then joins by the outlet of oil pump and valve and heat conduction oil sources respectively.During work, send in the upper and lower tube by pipeline, valve and oil pump by the thermal oil that the heat conduction oil sources is sent here, carry out heat exchange by steel pipe in the top cylinder and the inner core in the doffing, heat in the thermal oil is passed to hexanolactam in steel pipe and the doffing, thereby realize polymerization the hexanolactam of flow through steel pipe and doffing.Adopt thermal oil as heating medium, and not volatile, non-inflammable, the non-characteristics such as explosive of thermal oil belong to nontoxic, innoxious substance, even leakage situation occurs, not only can presence of fire and explosion hazard, and can not bring harm to staff's health.Again because the thermal oil zero pour is higher, no matter be hot summer, still winter severe cold season, be liquid state, compare as heat-conducting medium with tradition employing biphenyl ether, can reduce frequency of maintenance, enhance productivity.In addition, owing to adopt the thermal oil and the recycle system thereof to come hexanolactam is carried out heated polymerizable, only need the heat conduction oil sources is heated, product power consumption per ton has only 270Kw, need the 500Kw electricity to compare with one ton of product of the every production of traditional heating device, can save electricity consumption, reduce production costs.
Description of drawings
Accompanying drawing is a caprolactam polymerization reaction of the present invention heating unit synoptic diagram.
Embodiment
As shown in drawings, caprolactam polymerization reaction of the present invention comprises reaction tube and heat conduction oil sources 3 with heating unit.Reaction tube wherein is cylindrical, and it is made up of top cylinder and doffing.Be provided with upper backup pad 8 in the top cylinder, be the sealing shape around the upper backup pad 8 and be connected with the top cylinder inwall.All be processed with through hole on the base plate 10 of upper backup pad 8 and top cylinder, and the through hole on the upper backup pad 8 is corresponding one by one with the through hole on the base plate 10.Between 10 corresponding a pair of through holes of upper backup pad 8 and base plate steel pipe 9 is arranged all, this steel pipe is a stainless steel tube, and its upper and lower end outside respectively and be the sealing shape between the respective through hole on upper backup pad 8 and the base plate 10 and link together.Leave the spacing that is used to form distribution cavity 6 between the top of upper backup pad 8 and top cylinder, the top of distribution cavity 6 is processed with hexanolactam import 5.
Said top cylinder also can adopt following structure, promptly forms by cylindrical shell 7 with as the cavity of distribution cavity 6.Cylindrical shell 7 is cylindrical, is processed with through hole on its top board, and the cavity of distribution cavity 6 is in this through hole.Said cavity 7 also is cylindrical, and its top is semisphere and is processed with hexanolactam import 5, its lower end stretch in the through hole of cylindrical shell 7 top boards and itself and through hole between be the sealing shape and weld together.The lower end of cavity 7 is flat, so that form upper backup pad 8.
Doffing wherein contains inner core 12, and the upper end of inner core 12 and 10 of the base plates of top cylinder are the sealing shape and link together and all steel pipes 9 are all communicated with doffing.The outside of inner core 12 is provided with urceolus 11, and the upper end of urceolus 11 is processed with inside flanging, and this inside flanging is the sealing shape and is welded on the upper end outer side wall of inner core 12.The lower end of urceolus also is processed with inside flanging, and this inside flanging also is the sealing shape and is welded on the outer side wall of inner core 12 lower ends.Inner core 12 lower ends downward of doffing are protruded outside urceolus 11, so that as hexanolactam outlet 14.11 of inner core 12 and urceolus leave spacing, so that make the barrel of doffing form chuck 13.
Said heat conduction oil sources 3 is a thermo oil boiler.Oil-in 2 and last oil outlet 4 on the barrel of top cylinder, be processed with down oil-in 15 and following oil outlet 1 on urceolus 11 barrels of doffing, last oil outlet 4 wherein all links to each other by the import of oil pipe with heat conduction oil sources 3 with following oil outlet 1, and last oil-in 2 and following oil-in 15 then join with the outlet of heat conduction oil sources 3 by oil pump 16 and valve 17 respectively.
Last oil outlet 4 on the top cylinder and the following oil outlet 1 on the following drum outer wall all can have two, and these two pairs of oil outlets are in the top of top cylinder and urceolus 11 tops of doffing respectively.Wherein, be connected with the import of heat conduction oil sources 3 after a following oil outlet 1 on the urceolus 11 of last oil outlet 4 of on the top cylinder and doffing is communicated with.And oil outlet 4 is connected by the import of oil pipe with an oil pump 16 on the top cylinder another, and another on the urceolus 11 of doffing 1 of oil outlet down is connected by the import of oil pipe with another oil pump 16.
During work, is that thermo oil boiler is heated to design temperature to thermal oil earlier by heat conduction oil sources 3, squeeze into thermal oil in the top cylinder by valve 17 and oil pump 16 again and the chuck 13 of doffing in.After falling heat-transfer oil in the top cylinder and in the chuck 13 of doffing and these thermal oils carry out heat exchange by the hexanolactam in steel pipe 9 and inner core 12 and steel pipe 9 and the inner core 12 respectively, being divided into two-way refluxes, one the tunnel respectively following oil outlet 1 and the pipeline by one on top cylinder urceolus 11 tops of going up oil outlet 4 and doffing be back to corresponding oil pump 16 import in and with reenter in the top cylinder after thermal oil that heat conduction oil sources 3 is sent here mixes, another road then by top cylinder top go up oil outlet 4 and doffing urceolus 11 tops another down oil outlet 1 and pipeline pass back into together thermal oil come from the reheat use.
Claims (5)
1. the caprolactam polymerization reaction heating unit comprises reaction tube, and this reaction tube is cylindrical, and it is made up of top cylinder and doffing; Upper backup pad (8) is arranged in the top cylinder, be the sealing shape around the upper backup pad (8) and be connected with the top cylinder inwall; On the base plate (10) of upper backup pad (8) and top cylinder through hole is arranged all, and the through hole on the upper backup pad (8) is corresponding one by one with the through hole on the base plate (10); Between corresponding a pair of through hole steel pipe (9) is arranged all between upper backup pad (8) and base plate (10), the upper and lower end of steel pipe (9) outside respectively and be between the respective through hole on upper backup pad (8) and the base plate (10) and seal shape and link together; Leave the spacing that is used to form distribution cavity (6) between the top of upper backup pad (8) and top cylinder, hexanolactam import (5) is arranged at the top of distribution cavity (6); Doffing wherein contains inner core (12), is the sealing shape between the base plate (10) of the upper end of inner core (12) and top cylinder and links together and all steel pipes (9) are all communicated with doffing; There is urceolus (11) outside of inner core (12), and the two leaves the spacing that is used to make doffing barrel formation chuck (13); There is hexanolactam outlet (14) the doffing lower end, it is characterized in that also comprising heat conduction oil sources (3); Last oil-in (2) and last oil outlet (4) are arranged on the barrel of top cylinder, following oil-in (15) and following oil outlet (1) are arranged on the urceolus of doffing (11) barrel; Upper and lower oil outlet (4,1) all links to each other by the import of oil pipe with heat conduction oil sources (3), and upper and lower oil-in (2,15) then joins with the outlet of heat conduction oil sources (3) by oil pump (16) and valve (17) respectively.
2. caprolactam polymerization reaction heating unit according to claim 1 is characterized in that said top cylinder forms by cylindrical shell (7) with as the cavity of distribution cavity (6); Cylindrical shell (7) is cylindrical, is processed with through hole on its top board, and the cavity of distribution cavity (6) is in this through hole; Said cavity also is cylindrical, and its top is semisphere and is processed with hexanolactam import (5), its lower end stretch in the through hole of cylindrical shell (7) top board and itself and through hole between be the sealing shape and link together; There is flat as upper backup pad (8) lower end of cavity.
3. caprolactam polymerization reaction heating unit according to claim 1 is characterized in that bottom one side that last oil-in (2) on the top cylinder and the following oil-in (15) on the following drum outer wall all are in them.
4. caprolactam polymerization reaction heating unit according to claim 1, it is characterized in that last oil outlet (4) on the top cylinder and the following oil outlet (1) on the following drum outer wall all have two, these two pairs of oil outlets are in urceolus (11) top of top cylinder and doffing respectively; Wherein, following oil outlet (1) on the top cylinder one urceolus of going up oil outlet (4) and doffing is communicated with the back and links to each other with the import of heat conduction oil sources (3), and another on the urceolus (11) of oil outlet on another on the top cylinder (4) and doffing oil outlet (1) down then is connected by the import of oil pipe with corresponding oil pump (16) respectively.
5. according to the described caprolactam polymerization reaction heating unit of arbitrary claim in the claim 1～4, it is characterized in that said heat conduction oil sources (3) is a thermo oil boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100215130A CN100482716C (en) | 2007-04-18 | 2007-04-18 | Heating system for caprolactam polymerization reaction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100215130A CN100482716C (en) | 2007-04-18 | 2007-04-18 | Heating system for caprolactam polymerization reaction apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101037502A CN101037502A (en) | 2007-09-19 |
| CN100482716C true CN100482716C (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100215130A Expired - Fee Related CN100482716C (en) | 2007-04-18 | 2007-04-18 | Heating system for caprolactam polymerization reaction apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN100482716C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117360A (en) * | 2019-06-25 | 2019-08-13 | 福建中庚环境技术有限公司 | A kind of MC nylon industry metaplasia production complete set of equipments |
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2007
- 2007-04-18 CN CNB2007100215130A patent/CN100482716C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101037502A (en) | 2007-09-19 |
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Granted publication date: 20090429 Termination date: 20120418 |