CN205279440U - Fused salt electromagnetic heating device is used in ethylenediamine heating - Google Patents
Fused salt electromagnetic heating device is used in ethylenediamine heating Download PDFInfo
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- CN205279440U CN205279440U CN201521120202.6U CN201521120202U CN205279440U CN 205279440 U CN205279440 U CN 205279440U CN 201521120202 U CN201521120202 U CN 201521120202U CN 205279440 U CN205279440 U CN 205279440U
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- fused salt
- ethylenediamine
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Abstract
The utility model discloses a fused salt electromagnetic heating device is used in ethylenediamine heating, including electromagnetic heating device and fused salt circulating device, electromagnetic heating device includes the metallic casing, be provided with a plurality of heat exchange array pipe in the casing, heat exchange array pipe's entry, export are linked together with ethylenediamine entry, ethylenediamine export respectively, the heat exchange array pipe clearance forms the heat transfer chamber, and fused salt entry, fused salt export are linked together with the heat transfer chamber respectively, the winding of the casing outside has electromagnetic induction coil, and electromagnetic induction coil's both ends are connected on the controller, fused salt circulating device includes circulating pump and the built -in fused salt storage tank that has the heat exchange tube, the fused salt storage tank forms circulation circuit with the heat transfer chamber. The utility model discloses can be fast with the ethylenediamine gas heating to more than 300 DEG C, heat exchange efficiency is high, the fused salt circulates in the loop, the heat loss is little, has solved the dual problem of environmental pollution and potential safety hazard simultaneously, energy -concerving and environment -protective, the practicality is strong.
Description
Technical field
This utility model relates to a kind of heater, is specifically related to a kind of ethylenediamine heating fused salt electromagnetic heater.
Background technology
Triethylene diamine (TEDA), chemical name is Isosorbide-5-Nitrae-diazabicylo [2.2.2] octane, and molecular formula is N(CH2CH2)3N, molecular weight 112.18. Triethylene diamine is symmetrical caged molecule, is the crystal of a kind of colourless, easy moisture absorption, distils, should be stored in airtight and drying receptacle under room temperature. TEDA is widely used in polyurethane foam, elastomer and plastic and moulding process, additionally, also act as ethylene rolymerization catalyst and oxirane polymerized hydrocarbon catalyst, its derivant can be used as corrosion inhibitor, emulsifying agent etc., applies very extensive.
Different according to the raw material used, current synthesizing triethylene diamine (TEDA) mainly has following several method: (1) is synthesized by piperazine and derivant thereof, (2) synthesized by diethanolamine, (3) synthesized by ethylenediamine, (4) jointly synthesized by ethylenediamine and ethanolamine, (5) being synthesized by ethanolamine, (6) are by ethylene oxide synthesis. Wherein, using ethylenediamine as Material synthesis triethylene diamine, being under suitable catalyst action, ethylenediamine passes through gas phase deamination jeterocyclic chemistry one-step synthesis triethylene diamine. In this route, it is necessary to by ethylenediamine vaporization and gaseous state ethylenediamine to be warmed up to the high temperature of more than 250 DEG C, just can carry out ring-closure reaction; When the temperature of gaseous state ethylenediamine reaches more than 300 DEG C, the speed of ring-closure reaction is fast, yield is high.
What commonly use in factory is use chemical industry heat exchanger to material temperature-rising method, absorbs heat from heat source by heat exchange, reaches the purpose to material intensification, and the most frequently used thermal source is low-pressure steam. But, the intensification of material be can only achieve about 100 DEG C by low-pressure steam, and higher temperature needs high steam or the higher medium of boiling point to carry out heat exchange. General medium-sized and small enterprises are for the consideration of economy and safety, the method generally not taking high steam, but boil medium as thermal source to heat ethylenediamine using high temperature height, and being often used as a kind of height of thermal source medium that boils most is exactly fused salt.
The mixture that fused salt the most frequently used in current industrial is made up of 53% potassium nitrate, the sodium nitrate of 7%, the sodium nitrite of 40%, its fusing point is 142 DEG C, can use safely in 150 ~ 540 DEG C. Fused salt, compared with conduction oil, can obtain higher use temperature in identical pressure line, and fused salt class heat carrier does not explode, do not burn, Heat-resistant stable performance is good, it is nontoxic that it reveals steam, and heat transfer coefficient is 2 times of other organic heat carriers, is more suitable for the preparation system of triethylene diamine.
Present chemical plant generally all adopt resistance-type heating or coal heat fused salt. Resistance-type heating refers to by the resistive heating elements such as heating wire, electrothermal tube, by thermal-radiating mode, fused salt is carried out high-temperature heating, then is delivered to heat exchanger; The programming rate of resistance-type heating is very slow, and preheating time is long, and particularly carbon, coking are easily tied in electrothermal tube surface, and very easily oxidation damage, service life is short, maintenance difficult; Electrothermal tube once breakdown, can make high temperature heat conductive oil reveal, and gently then causes burning, heavy then blast, and consequence is hardly imaginable. Coal heating refers to be heated fused salt by heat produced by coal combustion, is delivered to heating equipment again; In coal heating process, coal makes that consumption is big, programming rate slow, and can produce substantial amounts of coal smoke, serious environment pollution; Particularly, naked light is used can to bring very huge potential safety hazard in Chemical Manufacture place, it is necessary to strictly to forbid.
Utility model content
For solving the problems referred to above that prior art exists, the purpose of this utility model is in that to provide a kind of ethylenediamine heating fused salt electromagnetic heater, and this device adopts electromagnetic variable-frequency heating fused salt and then heats ethylenediamine gas to more than 300 DEG C, and firing rate is fast, not producing pollutant, energy consumption is low.
For solving above-mentioned technical problem, this utility model be the technical scheme is that
Fused salt electromagnetic heater is used in a kind of ethylenediamine heating, including electromagnetic heater and fused salt circulating device;
Described electromagnetic heater includes metal housing, be arranged on housing ethylenediamine entrance, ethylenediamine outlet, the outlet of fused salt entrance, fused salt; Described hull outside is provided with insulating barrier, and enclosure interior is provided with some heat exchanging pipes, and the entrance of heat exchanging pipe is connected with ethylenediamine entrance, and the outlet of heat exchanging pipe is connected with ethylenediamine outlet; Gap between housing and heat exchanging pipe forms heat exchanging chamber, and the outlet of fused salt entrance, fused salt is connected with heat exchanging chamber respectively; Outer felt at housing is wound with electromagnetic induction coil, and the two ends of electromagnetic induction coil are connected on the controller realizing frequency conversion;
Described fused salt circulating device includes fused salt storage tank, circulating pump; Fused salt storage tank one end is connected with fused salt outlet, and the other end is communicated to fused salt entrance by circulating pump, forms closed circuit between fused salt storage tank and heat exchanging chamber; Described fused salt tank inside is provided with the heat exchanger tube being connected with electricity oil oven, and heat exchanger tube is shell and tube heat exchanger tube or coiled heat exchanger tube; Described fused salt storage tank is positioned at equipment lowest point, and the pipeline of described fused salt circulating device is provided with to be easy to fused salt and empty back into the gradient of fused salt storage tank.
Further improvement of the utility model is in that: described housing is horizontal cylinder, and the outlet of ethylenediamine entrance, ethylenediamine is separately positioned on the two ends, left and right of housing, and fused salt entrance is arranged at the bottom right side of housing, and fused salt outlet is arranged at the left side top of housing.
Further improvement of the utility model is in that: described electromagnetic induction coil is the outer strand copper wire being surrounded by insulating barrier, and electromagnetic induction coil is spirally wound on housing equably.
Further improvement of the utility model is in that: described electromagnetic induction coil is the outer strand copper wire being surrounded by glass layer.
Further improvement of the utility model is in that: described heat exchanging pipe is uniformly arranged around the axle center of housing.
Further improvement of the utility model is in that: described fused salt storage tank is Sealing Arrangement, and fused salt storage tank outer wall is provided with heat-insulation layer; The volume of fused salt storage tank is the swell increment after fused salt is heated and the summation of high-temperature molten salt discharge capacity time out of service.
Owing to have employed technique scheme, the technological progress that this utility model obtains is:
This utility model provides a kind of ethylenediamine heating fused salt electromagnetic heater, this device uses the principle of high-frequency electromagnetic induction coil heating, fused salt is quickly heated up to high temperature, by fused salt, ethylenediamine gas is heated to more than 300 DEG C, meet the needs of Chemical Manufacture, improve ring-closure reaction speed and the reaction yield of ethylenediamine; This device firing rate is fast, heat exchange efficiency is high, very energy-conservation; Fused salt is circulated in a loop, and heat loss is little, and heat conversion is up to more than 97%, and energy-saving and cost-reducing achievement is notable. Heating process power consumption of the present utility model is few, does not produce pollutant, and achieves fused salt and the separation of electricity, solves environmental pollution and potential safety hazard two fold problem simultaneously, and energy-conserving and environment-protective are practical, are particularly suitable for industrialization promotion.
This utility model limits fused salt storage tank and is positioned at the extreme lower position of whole device, and the pipeline of fused salt circulating device keeps rational flexibility and suitable gradient, during to facilitate device out of service, fused salt all can quickly flow back to fused salt storage tank, remaining in the duct, when being prevented effectively from high-temperature molten salt cooling, pipeline and housing is produced infringement.
Be provided with heat exchanger tube in fused salt storage tank, by electricity oil oven by more than heat-conducting oil heating to 150 DEG C, be then fed in heat exchanger tube solid salt is heated into fused salt, fused salt enters back into fused salt circulating line. Electricity oil oven only uses once when equipment goes into operation, and fused salt will keep high temperature circulation subsequently; The heating process of electricity oil oven is consuming time short, and energy consumption is low. The stable in properties of fused salt, non-volatile under high temperature, do not decompose, do not explode, do not burn, not carbonization, be therefore not required to often supplement fused salt, and whole fused salt circulating device run highly stable, it is not necessary to often overhaul, long service life.
Fused salt storage tank outside and fused salt circulating line are provided with heat-insulation layer, the heat exchange heat transfer efficiency of conduction oil can be improved on the one hand, reduce heat loss, on the other hand it can be avoided that staff is scalded by high temperature heat conductive oil by mistake, it is ensured that personal security.
Ethylenediamine entrance, ethylenediamine outlet, the position of fused salt entrance, fused salt outlet and the distribution of heat exchanging pipe on housing have all been carried out concrete restriction by this utility model, ensure that heat exchange effect good between fused salt and ethylenediamine gas, shorten heat time heating time, reduce heating energy consumption.
This utility model limits electromagnetic induction coil further and is surrounded by the strand copper wire of fiberglass insulation as outside, disclosure satisfy that the instructions for use of high frequency electric, high frequency voltage, fiberglass insulation thermostability and insulating properties are all fine, extend the service life of electromagnetic heater.
Accompanying drawing explanation
Fig. 1 is overall schematic of the present utility model;
Fig. 2 is the housing schematic side view in this utility model A-A direction;
Wherein, 1, housing, 2, ethylenediamine entrance, 3, ethylenediamine outlet, 4, fused salt entrance, 5, fused salt outlet, 6, heat exchanging pipe, 7, heat exchanging chamber, 8, electromagnetic induction coil, 9, controller, 10, fused salt storage tank, 11, circulating pump, 12, electricity oil oven.
Detailed description of the invention
Describe this utility model below with reference to the accompanying drawings in detail.
Fused salt electromagnetic heater is used in a kind of ethylenediamine heating, including electromagnetic heater and fused salt circulating device.
As it is shown in figure 1, electromagnetic heater includes housing 1, housing 1 is horizontal cylinder, is made of metal; The outer wall of housing 1 is enclosed with insulating barrier. As in figure 2 it is shown, be provided with some heat exchanging pipes 6 in housing 1, the length direction of heat exchanging pipe 6 is consistent with the length direction of housing 1, and heat exchanging pipe 6 is uniformly arranged around the axle center of housing 1; The gap of heat exchanging pipe 6 forms heat exchanging chamber 7.
Ethylenediamine entrance 2, ethylenediamine outlet 3 it is respectively arranged with at the two ends, left and right of housing 1; Wherein, the entrance of all heat exchanging pipes 6 is all connected with ethylenediamine entrance 2, and the outlet of all heat exchanging pipes 6 exports 3 with ethylenediamine and is connected. The bottom right side of housing offers fused salt entrance 4, and the left side top of housing 1 offers fused salt outlet 5; Fused salt entrance 4, fused salt outlet 5 is connected with heat exchanging chamber 7 respectively. Fused salt low temperature ethylenediamine gas of heat exchanging row Bottomhole pressure in heat exchanging chamber is heated, and after heating, high temperature ethylenediamine gas is sent by ethylenediamine outlet 3, and the fused salt after heat exchange is sent back to fused salt storage tank 10 by fused salt outlet, continued cycling through.
Outer helical at housing 1 is wound with electromagnetic induction coil 8, and described electromagnetic induction coil 8 is the outside strand copper wire being surrounded by insulating barrier. The two ends of electromagnetic induction coil 8 connect on controller 9; Controller 9 is made up of power supply processing circuit, frequency conversion oscillating circuit, high-frequency amplifier circuit, drive circuit and Based Intelligent Control, protection circuit, waveform shaping circuit, it is possible to realizing frequency conversion function, the variable frequency range of controller 9 is 50Hz ~ 50KHz. Electromagnetic induction coil leads to high frequency, high-voltage pulse current, and housing produces eddy current under high-frequency electromagnetic field action; Because the effect of eddy current makes case temperature raise, the fused salt being arranged in housing heat exchanging chamber is heated, and low temperature ethylenediamine gas is heated by high-temperature molten salt by heat exchanging pipe.
As it is shown in figure 1, described fused salt circulating device includes fused salt storage tank 10, circulating pump 11. Fused salt storage tank 10 is a Sealing Arrangement, fused salt storage tank 10 is oppositely arranged two outlets, left side outlet exports 5 by pipeline with fused salt and is connected, and right-side outlet is connected with fused salt entrance 4 by pipeline, and the pipeline between fused salt storage tank 10 and fused salt entrance 4 is provided with circulating pump 11. Form closed circuit between fused salt storage tank 10 and heat exchanging chamber 7, realized the circulation of fused salt by the driving of circulating pump 11. Fused salt storage tank 10 is positioned at equipment lowest point, and the pipeline of fused salt circulating device is provided with certain gradient, it is simple to out of service is that fused salt is all quickly returning in fused salt storage tank.
Being internally provided with heat exchanger tube at fused salt storage tank 10, heat exchanger tube is connected with electricity oil oven 12, forms loop; Electricity oil oven 12 heats conduction oil, and high temperature heat conductive oil enters the solid salt outside heat exchanger tube, exchange heat pipe and is heated to melted; After the solid salt in fused salt storage tank 10 is all melted, close electricity oil oven. Selection of Tubes in Heat Exchangers shell and tube heat exchanger tube or coiled heat exchanger tube, heat exchange area is big, and melted speed is fast.
Owing to temperature of molten salt is higher, in order to improve the heat exchange heat transfer efficiency of fused salt, avoid heat loss, avoid staff to scald simultaneously, fused salt storage tank 10 outside and fused salt circulating line are respectively provided with heat-insulation layer.
Work process of the present utility model is:
The solid salt of powdery is put into fused salt storage tank, by the conduction oil of electricity oil-furnace heating, solid salt is heated to more than fusing point so that it is viscosity reaches the degree that can circulate; Meanwhile, use electromagnetic heater that housing is preheated, solidify when flowing through cold pipe placing fused salt. Treat more than the fusing point that housing is heated to fused salt, ON cycle pump, fused salt is sent into heat exchanging chamber; Low temperature ethylenediamine gas is admitted in heat exchanging pipe. The alternating voltage of 50Hz is converted to the high frequency voltage that frequency is 5 ~ 50KHz by controller, and electromagnetic induction coil leads to high frequency, high-voltage pulse current, and housing produces eddy current under high-frequency electromagnetic field action so that case temperature raises; Fused salt in heat exchanging chamber is heated to high temperature, low temperature ethylenediamine gas is heated by high-temperature molten salt by the tube wall of heat exchanging pipe, be then sent back in fused salt storage tank through fused salt outlet and be circulated, and the high temperature ethylenediamine gas after intensification is discharged by ethylenediamine outlet, entered synthesizing section. When fused salt electromagnetic heater is out of service, whole fused salts quickly flow back in fused salt storage tank and store.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to this utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. fused salt electromagnetic heater is used in an ethylenediamine heating, it is characterised in that: include electromagnetic heater and fused salt circulating device;
Described electromagnetic heater includes metal housing (1) and the ethylenediamine entrance (2) being arranged on housing (1), ethylenediamine outlet (3), fused salt entrance (4), fused salt outlet (5); Described housing (1) is outside is provided with insulating barrier, and housing (1) is internally provided with some heat exchanging pipes (6), and the entrance of heat exchanging pipe (6) is connected with ethylenediamine entrance (2), and the outlet of heat exchanging pipe (6) exports (3) with ethylenediamine and is connected; The gap of housing (1) and heat exchanging pipe (6) forms heat exchanging chamber (7), and fused salt entrance (4), fused salt outlet (5) are connected with heat exchanging chamber (7) respectively; Outer felt at housing (1) is wound with electromagnetic induction coil (8), and the two ends of electromagnetic induction coil (8) are connected on the controller (9) realizing frequency conversion;
Described fused salt circulating device includes fused salt storage tank (10), circulating pump (11); Fused salt storage tank (10) one end exports (5) with fused salt and is connected, and the other end is communicated to fused salt entrance (4) by circulating pump (11), forms closed circuit between fused salt storage tank (10) and heat exchanging chamber (7); Described fused salt storage tank (10) is internally provided with the heat exchanger tube being connected with electricity oil oven (12), and heat exchanger tube is shell and tube heat exchanger tube or coiled heat exchanger tube; Described fused salt storage tank (10) is positioned at equipment lowest point, and the pipeline of described fused salt circulating device is provided with to be easy to fused salt and empty back into the gradient of fused salt storage tank (10).
2. a kind of ethylenediamine heating fused salt electromagnetic heater according to claim 1, it is characterized in that: described housing (1) is horizontal cylinder, ethylenediamine entrance (2), ethylenediamine outlet (3) are separately positioned on the two ends, left and right of housing (1), fused salt entrance (4) is arranged at the bottom right side of housing (1), and fused salt outlet (5) is arranged at the left side top of housing (1).
3. a kind of ethylenediamine heating fused salt electromagnetic heater according to claim 2, it is characterised in that: described electromagnetic induction coil (8) is the strand copper wire being surrounded by outward insulating barrier, and electromagnetic induction coil (8) is spirally wound on housing (1) equably.
4. a kind of ethylenediamine heating fused salt electromagnetic heater according to claim 3, it is characterised in that: described electromagnetic induction coil (8) is the strand copper wire being surrounded by outward glass layer.
5. a kind of ethylenediamine heating fused salt electromagnetic heater according to claim 4, it is characterised in that: described heat exchanging pipe (6) is uniformly arranged around the axle center of housing (1).
6. a kind of ethylenediamine heating fused salt electromagnetic heater according to any one of claim 1 ~ 5, it is characterised in that: described fused salt storage tank (10) is Sealing Arrangement, and fused salt storage tank (10) outer wall is provided with heat-insulation layer; The volume of fused salt storage tank (10) is the swell increment after fused salt is heated and the summation of high-temperature molten salt discharge capacity time out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120202.6U CN205279440U (en) | 2015-12-30 | 2015-12-30 | Fused salt electromagnetic heating device is used in ethylenediamine heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120202.6U CN205279440U (en) | 2015-12-30 | 2015-12-30 | Fused salt electromagnetic heating device is used in ethylenediamine heating |
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| Publication Number | Publication Date |
|---|---|
| CN205279440U true CN205279440U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521120202.6U Expired - Fee Related CN205279440U (en) | 2015-12-30 | 2015-12-30 | Fused salt electromagnetic heating device is used in ethylenediamine heating |
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| CN (1) | CN205279440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333347A (en) * | 2017-08-10 | 2017-11-07 | 北京工业大学 | A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater |
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2015
- 2015-12-30 CN CN201521120202.6U patent/CN205279440U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333347A (en) * | 2017-08-10 | 2017-11-07 | 北京工业大学 | A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20191230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |