CN204355563U - A kind of nylon salt aqueous system storage device - Google Patents
A kind of nylon salt aqueous system storage device Download PDFInfo
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- CN204355563U CN204355563U CN201420839577.7U CN201420839577U CN204355563U CN 204355563 U CN204355563 U CN 204355563U CN 201420839577 U CN201420839577 U CN 201420839577U CN 204355563 U CN204355563 U CN 204355563U
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Abstract
The utility model relates to a kind of nylon salt aqueous system storage device, comprises holding vessel, holding vessel is connected with temperature controlling system, inert atmosphere control system, concentration control system and external circulating system; Holding vessel outer wall is provided with heat-insulation layer; Inert atmosphere control system comprises the inlet, outlet pipeline stretched in holding vessel, and induction tract is provided with air intake valve and gas flow rate controller, vent pipe is provided with in turn valve of giving vent to anger, oxygen detection instrument and condenser system; Oxygen detection instrument is connected with the input end of gas flow rate controller, and the mouth of gas flow rate controller is connected with inlet, outlet valve; Concentration control system comprises the hydrometer, consistency controller and the water inlet valve that are positioned at holding vessel, and hydrometer is connected with the input end of consistency controller, and the mouth of consistency controller is connected with water inlet valve.This device has the advantages such as design science, simple to operate and storage time be long, and in holding vessel, the massfraction of the nylon salt aqueous system, pH value and UV value are all relatively stable.
Description
Technical field
The utility model belongs to nylon salt technical field, is specifically related to a kind of nylon salt aqueous system storage device.
Background technology
Along with the enhancing of people's energy-conserving and environment-protective consciousness, in Chemical Manufacture, the consumption of the energy more and more obtains the attention of people, and how not only saving the energy but also produce qualified chemical products is people's problem demanding prompt solutions.Nylon salt is the monomer of synthesis polyamide fibre chain cloth, is odorless, white that is corrosion-free, slightly ammonia taste or micro-chrysolithos shape monoclinic system crystal under normal temperature.Under room temperature, the nylon salt in dry or solution is more stable, but when temperature is higher than 200 DEG C, understands polymerization reaction take place.
At present, nylon salt mainly contains aqua-solution method and solvent crystallization two kinds of production technologies.Aqua-solution method take water as solvent, carries out neutralization reaction in aqueous, obtain the nylon salt aqueous system with the hexamethylenediamine of equivalent and adipic acid.The feature of the method does not adopt methyl alcohol or ethanol etc. as solvent, and convenient and easy, safe and reliable, technological process is short, and cost is low.But higher to the requirements for quality of raw material midbody, long distance transportation expense is also higher.Solvent crystallization be with methyl alcohol or ethanol for solvent, obtain solid nylon 66 salt through neutralization, crystallization, centrifugalization, washing.Wherein, material purity, crystallization point, mechanical loss, solvent strength and consumption etc. all to the yield of nylon salt and quality influence larger.In addition, the stability that the impurity such as 1,2-DACH in hexamethylenediamine, 1-amino methyl cyclopentance, amino-capronitrile can affect nylon salt is remained in.The feature of the method is convenient transportation, flexibly, good product quality, but comparatively strong to temperature, humidity, light and oxygen sensitivity, needs again to be dissolved in water in polycondensation operation.
Because aqua-solution method generates the advantage of lower cost of nylon salt, product design is also more stable, and can also carry out short range transport, therefore it occupies an leading position in the production of nylon salt, and nylon salt storage is in transit then crucial.The nylon salt aqueous system has three leading indicators, is respectively massfraction, pH value and UV value, massfraction and pH value relatively stable, UV value is more difficult control then.The UV value of the nylon salt aqueous system refer to 279nm wavelength place, record 50mm thickness the 20% nylon salt aqueous system absorbance after be scaled the absorbance of the 1% nylon salt aqueous system of 10mm thickness.The fluctuation of UV value can affect to the product design of nylon salt.When UV value exceeds standard, the tensility that can directly reel off raw silk from cocoons to lower procedure and intensity have an impact, and cause fracture of wire to break footpath.In order to solve above Problems existing, people are seeking a kind of desirable technical solution always.
Utility model content
The utility model object is to overcome the deficiencies in the prior art, provides a kind of nylon salt aqueous system storage device.
For achieving the above object, the utility model is by the following technical solutions:
A kind of nylon salt aqueous system storage device, comprises holding vessel, described holding vessel is connected with temperature controlling system, inert atmosphere control system, concentration control system and external circulating system; Holding vessel outer wall is provided with heat-insulation layer;
Described inert atmosphere control system comprises the inlet, outlet pipeline stretched in holding vessel, and induction tract is provided with air intake valve and gas flow rate controller, vent pipe is provided with in turn valve of giving vent to anger, oxygen detection instrument and condenser system; Oxygen detection instrument is connected with the input end of gas flow rate controller, and the mouth of gas flow rate controller is connected with inlet, outlet valve;
Described concentration control system comprises the hydrometer, consistency controller and the water inlet valve that are positioned at holding vessel, and hydrometer is connected with the input end of consistency controller, and the mouth of consistency controller is connected with water inlet valve;
Described external circulating system comprises the outer circulation inlet valve, circulation pump and the outer circulation outlet valve that are connected in turn by pipeline, and outer circulation entry and exit valve is stretched in holding vessel by pipeline.
Concrete, described temperature controlling system comprises the thermo detector, temperature controller and the heating medium import and export valve that are positioned at holding vessel; Thermo detector is connected with the input end of temperature controller, and the mouth of temperature controller connects heating medium import and export valve; Heating medium import and export valve is stretched in heat-insulation layer by pipeline.
Described holding vessel is also connected with liquidometer, in order to observe the liquid level in holding vessel.
Use said apparatus to store the method for the nylon salt aqueous system, it comprises the steps:
1) oxygen content controlled in holding vessel by inert atmosphere control system is not more than 10ppm; Unreactable gas is fast into and out of entering in holding vessel with the gas of 1 ~ 10L/min, when in holding vessel, oxygen content is greater than 10ppm; Inlet, outlet valve can tune up to ensure that oxygen content is not more than 10ppm automatically;
2) temperature controlling system is utilized to be incubated holding vessel by heat-insulation layer; When in holding vessel, temperature reaches design temperature, open temperature controlling system, when the solution temperature in holding vessel is higher than design temperature 0.5 DEG C, heating medium turnover, mouth valve can be turned down automatically, when the solution temperature in holding vessel is lower than design temperature 0.5 DEG C, turnover, the mouth valve of heating medium can tune up automatically, in order to ensure that in holding vessel, temperature maintains design temperature all the time; In general, the temperature in holding vessel is higher than the crystallization point of nylon salt 10 ~ 15 DEG C;
3) due to the easy dehydration of salt in storage process, therefore control the nylon salt concentration of aqueous solution in holding vessel by concentration control system, when concentration of aqueous solution increases above 0.3%, water inlet valve can be opened to keep the skin wet automatically; When concentration of aqueous solution reduces by more than 0.3%, water inlet valve can be closed automatically;
4) the nylon salt aqueous system in holding vessel is made to realize inner stirring by external circulating system; In order to avoid the nylon salt aqueous temperature near storing tank skin too high, cause concentration to increase, salt decay accelerates; Pump flow controls at 1 ~ 10m
3/ h;
Described unreactable gas can be nitrogen, carbon dioxide or argon gas etc., wherein, and preferred nitrogen.
Condenser system can be conventional shell and tube or disk type condenser, in order to when unreactable gas flows through freeing pipe by under the water vapor condensation taken away with unreactable gas, reduce the water loss in holding vessel.
Temperature controlling system, inert atmosphere control system and concentration control system corresponding independence separately in the utility model nylon salt aqueous system storage device, respectively in order to the concentration of the temperature in control store tank, oxygen content and the nylon salt aqueous system; External circulating system effectively can ensure that the solution circulation in holding vessel dynamically mixes.This nylon salt storage device has design science, rational in infrastructure, productive costs is low, the advantage of reliable product quality.
The utility model storage method ensures the temperature stabilization in holding vessel by temperature controlling system; Ensure that in holding vessel space, oxygen content maintains reduced levels by inert atmosphere control system; Ensure that in holding vessel, the nylon salt aqueous system maintains certain density scope by concentration control system; , even concentration constant by nylon salt aqueous temperature in external circulating system guarantee holding vessel, the method has the advantages such as design science, simple to operate and storage time be long, and in holding vessel, the massfraction of the nylon salt aqueous system, pH value and UV value are all relatively stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of nylon salt aqueous system storage device described in the utility model.
Detailed description of the invention
Below by way of specific embodiment, the utility model is described further, but protection domain of the present utility model is not limited thereto.
embodiment 1
As shown in Figure 1, a kind of nylon salt aqueous system storage device, comprises holding vessel 1, described holding vessel 1 is connected with temperature controlling system, inert atmosphere control system, concentration control system and external circulating system; Holding vessel outer wall is provided with heat-insulation layer 19;
Described inert atmosphere control system comprises the inlet, outlet pipeline stretched in holding vessel, and induction tract is provided with air intake valve 2 and gas flow rate controller 5, vent pipe is provided with in turn valve 3 of giving vent to anger, oxygen detection instrument 6 and condenser system 8; Oxygen detection instrument 6 is connected with the input end of gas flow rate controller 5, and the mouth of gas flow rate controller 5 is connected with air intake valve 2, valve 3 of giving vent to anger;
Described concentration control system comprises the hydrometer 12, consistency controller 7 and the water inlet valve 13 that are positioned at holding vessel, and hydrometer 12 is connected with the input end of consistency controller 7, and the mouth of consistency controller 7 is connected with water inlet valve 13; High purity water enters in holding vessel 1 by pipeline and water inlet valve 13, in order to supplement high purity water in holding vessel 1;
Described external circulating system comprises the outer circulation inlet valve 14, circulation pump 16 and the outer circulation outlet valve 17 that are connected in turn by pipeline, and outer circulation inlet valve 14, outer circulation outlet valve 17 are stretched in holding vessel 1 by pipeline.
Described temperature controlling system comprises the thermo detector 11, temperature controller 4, heating medium imported valve 18 and the Crude product input valve 9 that are positioned at holding vessel; Thermo detector 11 is connected with the input end of temperature controller 4, and the mouth of temperature controller 4 connects heating medium imported valve 18 and Crude product input valve 9; Heating medium imported valve 18 and Crude product input valve 9 are stretched in heat-insulation layer 19 by pipeline.Described holding vessel 1 is also connected with liquidometer 15, in order to observe the nylon salt aqueous system reserves in holding vessel 1.Holding vessel 1 is also provided with in order to input, the imported valve 10 exporting solution and outlet valve 20.
Above-mentioned gas flow rate controller 5 can adopt the heat-conducted flow quantity control instrument of FCT of Wal, Shenzhen gram Automated condtrol Co., Ltd; Consistency controller 7 can adopt the GD28/PDE-M consistency controller of thing instrument (Beijing) Science and Technology Ltd.; Oxygen detection instrument 6 can adopt the online oxygen detection instrument of FX6000-O2 of Leo Electronics Co., Ltd. of China of Shenzhen; Temperature controller 4 can adopt the vertical monochromatic light post temperature digital display controller of the SY-XMZ/T of Nanjing Sai Yatefu precision instrument Co., Ltd intelligence; Liquidometer 15 can adopt the YJF-YK-UQZ telemetering type ball float of Haiyang health instrument and meter for automation Co., Ltd to become liquor charging level sensor.
A kind of method using said apparatus to store the nylon salt aqueous system (concentration 50wt%), it comprises the steps:
1) oxygen content controlled in holding vessel by inert atmosphere control system is not more than 10ppm; Unreactable gas (nitrogen) is fast into and out of entering in holding vessel 1 with the gas of 1 ~ 10L/min, when in holding vessel 1, oxygen content is greater than 10ppm; Air intake valve 2, valve 3 of giving vent to anger can tune up to ensure that oxygen content is not more than 10ppm automatically;
2) temperature controlling system is utilized to be incubated by heat-insulation layer 19 pairs of holding vessels 1; When temperature in holding vessel 1 reaches design temperature 45 DEG C, open temperature controlling system, when the solution temperature in holding vessel 1 is higher than design temperature 0.5 DEG C, heating medium imported valve 18 and Crude product input valve 9 can be turned down automatically, when the solution temperature in holding vessel 1 is lower than design temperature 0.5 DEG C, heating medium imported valve 18 and Crude product input valve 9 can tune up automatically, in order to ensure that in holding vessel 1, temperature maintains design temperature all the time;
3) due to the easy dehydration of salt in storage process, therefore control the nylon salt concentration of aqueous solution in holding vessel 1 by concentration control system, when concentration of aqueous solution increases above 0.3%, water inlet valve 13 can be opened to keep the skin wet automatically; When concentration of aqueous solution reduces by more than 0.3%, water inlet valve 13 can be closed automatically;
4) the nylon salt aqueous system in holding vessel 1 is made to realize inner stirring by external circulating system; In order to avoid the nylon salt aqueous temperature near storing tank skin too high, cause concentration to increase, salt decay accelerates; Pump flow controls at 7m
3/ h;
The utility model storage device and storage method ensure the temperature stabilization in holding vessel by temperature controlling system; Ensure that in holding vessel space, oxygen content maintains reduced levels by inert atmosphere control system; Ensure that in holding vessel, the nylon salt aqueous system maintains certain density scope by concentration control system; , even concentration constant by nylon salt aqueous temperature in external circulating system guarantee holding vessel; This storage device and storage method have the advantages such as design science, simple to operate and storage time be long, and in holding vessel, the massfraction of the nylon salt aqueous system, pH value and UV value are all relatively stable.
Adopt said apparatus and method, mass concentration be 50% the quality and technical index that stores after ten days of the nylon salt aqueous system as follows:
Finally should be noted that: above embodiment is only in order to illustrate the technical solution of the utility model but not limitation ot it; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (3)
1. a nylon salt aqueous system storage device, comprises holding vessel, it is characterized in that, described holding vessel is connected with temperature controlling system, inert atmosphere control system, concentration control system and external circulating system; Holding vessel outer wall is provided with heat-insulation layer;
Described inert atmosphere control system comprises the inlet, outlet pipeline stretched in holding vessel, and induction tract is provided with air intake valve and gas flow rate controller, vent pipe is provided with in turn valve of giving vent to anger, oxygen detection instrument and condenser system; Oxygen detection instrument is connected with the input end of gas flow rate controller, and the mouth of gas flow rate controller is connected with inlet, outlet valve;
Described concentration control system comprises the hydrometer, consistency controller and the water inlet valve that are positioned at holding vessel, and hydrometer is connected with the input end of consistency controller, and the mouth of consistency controller is connected with water inlet valve;
Described external circulating system comprises the outer circulation inlet valve, circulation pump and the outer circulation outlet valve that are connected in turn by pipeline, and outer circulation entry and exit valve is stretched in holding vessel by pipeline.
2. nylon salt aqueous system storage device as claimed in claim 1, it is characterized in that, described temperature controlling system comprises the thermo detector, temperature controller and the heating medium import and export valve that are positioned at holding vessel; Thermo detector is connected with the input end of temperature controller, and the mouth of temperature controller connects heating medium import and export valve; Heating medium import and export valve is stretched in heat-insulation layer by pipeline.
3. nylon salt aqueous system storage device as claimed in claim 1, it is characterized in that, described holding vessel is also connected with liquidometer.
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| CN201420839577.7U CN204355563U (en) | 2014-12-26 | 2014-12-26 | A kind of nylon salt aqueous system storage device |
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| CN201420839577.7U CN204355563U (en) | 2014-12-26 | 2014-12-26 | A kind of nylon salt aqueous system storage device |
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| CN204355563U true CN204355563U (en) | 2015-05-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555163A (en) * | 2014-12-26 | 2015-04-29 | 河南神马尼龙化工有限责任公司 | Nylon 66 saline solution storing device and method |
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2014
- 2014-12-26 CN CN201420839577.7U patent/CN204355563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555163A (en) * | 2014-12-26 | 2015-04-29 | 河南神马尼龙化工有限责任公司 | Nylon 66 saline solution storing device and method |
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