CN208586060U - A kind of device preparing nitrous oxide - Google Patents
A kind of device preparing nitrous oxide Download PDFInfo
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- CN208586060U CN208586060U CN201820926647.0U CN201820926647U CN208586060U CN 208586060 U CN208586060 U CN 208586060U CN 201820926647 U CN201820926647 U CN 201820926647U CN 208586060 U CN208586060 U CN 208586060U
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- reactor
- temperature
- electric heater
- nitrous oxide
- water pipe
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Abstract
The utility model discloses a kind of devices for preparing nitrous oxide, include: sequentially connected reaction member, cooling and purifying unit and compress and liquefy unit, the reaction member includes the automatic temperature control system of reactor, the safe water sealed cans connecting with the reactor and the control reactor temperature.The utility model provides a kind of device for preparing nitrous oxide, safe water sealed cans and automatic temperature control system are provided in the reaction system of device, it is effectively guaranteed the security reliability of production, the plant automation degree of the utility model is high, guarantees simplification of flowsheet while product purity.
Description
Technical field
The utility model relates to the preparation fields of industrial chemicals, more particularly, to a kind of dress for preparing nitrous oxide
It sets.
Background technique
Nitrous oxide, chemical formula N2O, also known as nitrous oxide, laughing gas, colourless pleasantly sweet gas are a kind of oxidants,
Burning (same to oxygen, because laughing gas can resolve into nitrogen and oxygen at high temperature) can be supported under certain condition, but at room temperature
Stablize, has light anaesthesia effect, and human hair can be caused to laugh at.Nitrous oxide is the important source material in chemistry and electronics industry, purposes
Extensively, combustion adjuvant, rocket oxidizer, medical anesthesia agent and food processing aid etc. be can be used as.
Prepare N2The main method of O has the contact oxidation method or remanufacture ethanedioic acid of ammonium nitrate thermal decomposition method and ammonia
The tail gas generated in the process.Tail gas recycle method can also realize income using byproduct while meeting environmental requirements.According to report
Road, Shandong Jin Bo Environmental Protection Technology Co., Ltd and Jin Hong gas are cooperated preparing with Henan table mountain Shen Ma group company to be built
If the considerable tail gas recycle of production capacity purifies N2The engineering project of O.
But current domestic production N2O is substantially the production technology decomposed using ammonium nitrate dry method, and chemical equation is
NH4NO3→N2O+2H2O, which is also current internationalization process, but equipment cost is higher.And the reaction is to put
Thermal response, ammonium nitrate belong to dangerous material, so needing to guarantee security reliability in production process.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of device for preparing nitrous oxide, effectively guarantees
The security reliability of production.
The utility model provides a kind of device for preparing nitrous oxide, comprising: sequentially connected reaction member, cooling are net
Change unit and compress and liquefy unit, the reaction member includes reactor, the safe water sealed cans and control that connect with the reactor
Make the automatic temperature control system of the reactor temperature.
Preferably, the automatic temperature control system includes electric heater, thermometric instrument and cooling water pipe, the electric heater and
The cooling water pipe is arranged in the reactor, and the thermometric instrument is located on the shell of the reactor, the thermometer
Table is connect with the inlet valve of the switch of the electric heater and the cooling water pipe respectively, and the thermometric instrument monitors institute in real time
The temperature in reactor is stated, and the power by adjusting the electric heater is adjusted with the inlet valve for opening and closing the cooling water pipe
Save the temperature in the reactor.
Preferably, the cooling and purifying unit includes the condenser being sequentially connected in series, chemical scrubber, water wash column and buffering
Gas holder, the entrance of the condenser are connected with the outlet of the reactor.
Preferably, first circulation is equipped between the tower bottom discharge port of the chemical scrubber and tower upper wash liquid feed inlet
Pump.
Preferably, second circulation is equipped between the tower bottom discharge port of the water wash column and tower upper wash liquid feed inlet
Pump.
Preferably, the unit that compresses and liquefies includes the compressor being sequentially connected in series, drier group, cooler and product storage
Tank, the entrance of the compressor are connected with the outlet of the buffer gas tank.
Preferably, the buffer gas tank is equipped with pressure gauge, and the pressure gauge monitors in real time in the buffer gas tank
Pressure, and the sucking rate of compressor described in automatic control and adjustment, so that the pressure balance in the buffer gas tank.
The device provided by the utility model for preparing nitrous oxide is provided with safe water sealed cans and temperature in reaction system
Robot control system(RCS) is spent, the security reliability of production, and the high degree of automation of the device is effectively guaranteed, guarantees product purity
Simplification of flowsheet simultaneously.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram that nitrous oxide is prepared in the utility model embodiment；
In figure: 1- safe water sealed cans, 2- reactor, 3- condenser, 4- chemical scrubber, 5- water wash column, 6- buffer gas
Cabinet, 7- compressor, 8- drier group, 9- cooler, 10- product storage tank, 11- electric heater, 12- thermometric instrument, 13- are cooling
Water pipe, 14- first circulation pump, 15- second circulation pump, 16- pressure gauge.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not limited to the protection scope of the utility model for illustrating the utility model.
The present embodiment provides a kind of devices for preparing nitrous oxide, as shown in Figure 1, comprising: sequentially connected reaction is single
Member and compresses and liquefies unit at cooling and purifying unit；
The reaction member includes warm in reactor 2, the safe water sealed cans 1 connecting with reactor 2 and control reactor 2
The automatic temperature control system of degree；
The cooling and purifying unit includes the condenser 3 being sequentially connected in series, chemical scrubber 4, water wash column 5 and buffer gas tank
6, the entrance of condenser 3 is connected with the outlet of reactor 2；
The unit that compresses and liquefies includes the compressor 7 being sequentially connected in series, drier group 8, cooler 9 and product storage tank 10,
The entrance of compressor 7 is connected with the outlet of buffer gas tank 6.
It is provided with the safe water sealed cans 1 connecting with reactor 2 in reaction member, when pressure is exceeded in reactor 2, leads to
It crosses safe water sealed cans 1 and a part of gas is discharged, keep pressure in reactor 2 normal；But also it is provided with automatic temperature control system, it can
To monitor temperature in reactor 2 at any time, when in reactor 2 temperature not within the set range when, can automatically adjust temperature make it is full
Foot requires, and is effectively guaranteed the security reliability of production.
Further, in this embodiment automatic temperature control system is by 13 structure of electric heater 11, thermometric instrument 12 and cooling water pipe
At electric heater 11 and cooling water pipe 13 are arranged in reactor 2, and thermometric instrument 12 is located on the shell of reactor 2, supervise in real time
The temperature in reactor 2 is controlled, and the power by adjusting electric heater 11 is adjusted with the inlet valve for opening and closing cooling water pipe 13
Temperature in reactor 2.
Further, in this embodiment chemical scrubber 4 uses 3 concatenated modes.
The gas that reaction member generates is after condenser 3, chemical scrubber 4 and water wash column 5, most of impurity quilt
Removal guarantees product purity, and saves the rectifying column that certain prior arts use, simplification of flowsheet.
Further, in this embodiment being set between the tower bottom discharge port and tower upper wash liquid feed inlet of chemical scrubber 4
There is first circulation to pump 14.Second circulation pump 15 is equipped between the tower bottom discharge port and tower upper wash liquid feed inlet of water wash column 5.
Cleaning solution can be recycled in this way, and the waste liquid generated during reducing is good for the environment.
Further, in this embodiment buffer gas tank 6 uses wet type floating gas holder, it is equipped with pressure gauge 16, pressure gauge
16 connect with compressor 7, and pressure gauge 16 monitors the pressure in buffer gas tank 6, the pumping of automatic control and adjustment compressor 7 in real time
Amount.
Further, in this embodiment compressor 7 is pressurized using three-level, by the way of cascade EDFA.
Further, in this embodiment drier group 8 uses molecular sieve, two groups of modes in parallel, being used alternatingly.
Further, in this embodiment low-temperature storage tank of the product storage tank 10 using vacuum insulation.
The preparation facilities provided based on the above embodiment, the method for preparing nitrous oxide include: by 120~140 DEG C
Liquid ammonium nitrate is injected in reactor 2 by feed pump, sets reaction temperature as 240~260 DEG C, the monitoring of thermometric instrument 12 is reacted
Temperature in device 2, the heating power of automatic controlled electric heater 11 automatically turn on cooling water pipe 13 when temperature is more than 260 DEG C
Inlet valve, be passed through that cooling water is cooling to reaction mass, and maintaining temperature in reactor 2 is 240~260 DEG C, decomposing ammonium nitrate
Reacting balance carries out, and pressure maintains 0~0.1MPaG in reactor 2, when pressure is more than 0.1MPaG, then gas in reactor 2
Safety zone is emitted by safe water sealed cans 1；
The high-temperature mixed gas generated is reacted, cooling by condenser 3, the byproduct water of condensation is discharged from tower bottom, cooling
Gas afterwards passes sequentially through the packing layer of chemical scrubber 4 and water wash column 5, comes into full contact with the cleaning solution of spray, further
Remove NO2、CO2Impurity are waited, chemical detergent uses 5%~15% aqueous slkali in the present embodiment；
Purified nitrous oxide gas, which enters in buffer gas tank 6, to be cached, and gas is pressurized to 2.0 by compressor 7~
4.0MPa, pressure gauge 16 monitor the pressure of buffer gas tank 6, and the extraction flow of automatic control compressor 7 maintains the pressure in device
Power is stablized, and pressurized gas passes sequentially through drier group 8 again and cooler 9 is cooled to -30~-20 DEG C of liquefaction, into product
Storage tank 10 stores.
The product purity > 99.0% of finally obtained nitrous oxide liquid.
Finally, being not intended to limit the protection model of the utility model the above is only the preferred embodiment of the utility model
It encloses.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of utility model.
Claims (6)
1. a kind of device for preparing nitrous oxide characterized by comprising sequentially connected reaction member, cooling and purifying list
Member and compress and liquefy unit, the reaction member includes reactor, the safe water sealed cans connecting with the reactor and controls institute
State the automatic temperature control system of reactor temperature, the automatic temperature control system includes electric heater, thermometric instrument and cooling water pipe,
The electric heater and the cooling water pipe are arranged in the reactor, and the thermometric instrument is located at the shell of the reactor
On, the thermometric instrument is connect with the inlet valve of the switch of the electric heater and the cooling water pipe respectively, the temperature
Instrument monitors the temperature in the reactor, and the power by adjusting the electric heater and the opening and closing cooling water pipe in real time
Inlet valve adjust the temperature in the reactor.
2. the apparatus according to claim 1, which is characterized in that the cooling and purifying unit includes the condensation being sequentially connected in series
Device, chemical scrubber, water wash column and buffer gas tank, the entrance of the condenser are connected with the outlet of the reactor.
3. the apparatus of claim 2, which is characterized in that the tower bottom discharge port of the chemical scrubber is washed with tower top
It washs and is equipped with first circulation pump between liquid feed inlet.
4. the apparatus of claim 2, which is characterized in that the tower bottom discharge port and tower upper wash of the water wash column
Second circulation is equipped between liquid feed inlet to pump.
5. the apparatus of claim 2, which is characterized in that the unit that compresses and liquefies includes the compression being sequentially connected in series
Machine, drier group, cooler and product storage tank, the entrance of the compressor are connected with the outlet of the buffer gas tank.
6. device according to claim 5, which is characterized in that the buffer gas tank is equipped with pressure gauge, the Instrument for Pressure
Table monitors the pressure in the buffer gas tank in real time, and the sucking rate of compressor described in automatic control and adjustment, so that the buffering
Pressure balance in gas holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926647.0U CN208586060U (en) | 2018-06-14 | 2018-06-14 | A kind of device preparing nitrous oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926647.0U CN208586060U (en) | 2018-06-14 | 2018-06-14 | A kind of device preparing nitrous oxide |
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| Publication Number | Publication Date |
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| CN208586060U true CN208586060U (en) | 2019-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820926647.0U Active CN208586060U (en) | 2018-06-14 | 2018-06-14 | A kind of device preparing nitrous oxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302317A (en) * | 2020-04-02 | 2020-06-19 | 全椒科利德电子材料有限公司 | Continuous high-purity nitrous oxide production system and method |
-
2018
- 2018-06-14 CN CN201820926647.0U patent/CN208586060U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302317A (en) * | 2020-04-02 | 2020-06-19 | 全椒科利德电子材料有限公司 | Continuous high-purity nitrous oxide production system and method |
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