CN207957781U - A kind of synthesis ammonia system liquefied ammonia purifier - Google Patents

Abstract

A kind of synthesis ammonia system liquefied ammonia purifier, including ammonia cooler, storage of described liquefied ammonia, ammonia spherical tank, the ammonia cooler, storage of described liquefied ammonia, ammonia spherical tank are connected to by liquefied ammonia blow-off pipe with oil expeller, the oil expeller is internally provided with coil pipe, the coil pipe upper end is connected to steam-heated pipe line, the coil pipe lower end is connected to steam condensate (SC) drainpipe, and gas ammonia recovery channel is equipped at the top of the oil expeller.The utility model aim is that ammonia cool equipment and ammonia storage tank etc. are related to ammonia device to pass through periodical blowdown, the mixture of the greasy dirt and ammonia that are gathered in remover apparatus, it is that greasy dirt and liquefied ammonia are detached by liquefied ammonia purifier, reaches and improve liquid ammonia quality, improves ammonia cooler heat transfer effect.Reduce corrosion of the greasy dirt to tubulation in ammonia cooler, extends service life of equipment.The side effect to catalyst and derived product such as gas ammonia entrained oil dirt is avoided simultaneously, improves the product qualities such as nitric acid, composite fertilizer.With larger economic benefit and social benefit.

Description

A kind of synthesis ammonia system liquefied ammonia purifier

Technical field

The utility model is related to a kind of synthesis ammonia system liquefied ammonia purifiers, are used for the purification of kind of synthesis ammonia system liquefied ammonia, The impurity such as oil, residue in liquefied ammonia are removed, liquid ammonia quality is improved.

Background technology

In Ammonia Production, the gas ammonia after hydrogen and nitrogen gas reaction synthesis is generally detached using the method for cooling condensation, Cold needed for cooling is generally provided using the evaporation of liquefied ammonia.In liquefied ammonia evaporation process, the residue in greasy dirt and liquefied ammonia is not Break and gathered in ammonia cool equipment, influence the heat transfer effect of ammonia cool equipment, reduces production efficiency；The greasy dirt and residue of accumulation simultaneously Easily equipment is caused to corrode, cause the influences such as equipment leakage normal, even results in the generation of production accident.

Invention content

The utility model provides a kind of synthesis ammonia system liquefied ammonia purification dress, and ammonia cool equipment and ammonia storage tank etc. are related to ammonia device and led to Periodical blowdown is crossed, the mixture of the greasy dirt and ammonia that are gathered in remover apparatus is that greasy dirt and liquefied ammonia carry out by liquefied ammonia purifier Separation, reaches the purpose that gas ammonia is recycled except degreasing and impurity.

Technical solutions of the utility model：

A kind of synthesis ammonia system liquefied ammonia purifier, including ammonia cooler, storage of described liquefied ammonia, ammonia spherical tank, the ammonia cooler, liquefied ammonia Storage tank, ammonia spherical tank are connected to by liquefied ammonia blow-off pipe with oil expeller, and the oil expeller is internally provided with coil pipe, the coil pipe upper end and steaming Vapour heating pipe is connected to, and the coil pipe lower end is connected to steam condensate (SC) drainpipe, and gas ammonia is equipped at the top of the oil expeller and is recycled Pipeline.

Preferably, it is additionally provided with safety valve at the top of the oil expeller.

Preferably, middle and lower part is equipped with temperature transmitter, liquid level gauge inside the oil expeller.

Preferably, the oil expeller bottom is equipped with oil-drain pipe.

Preferably, the liquefied ammonia blow-off pipe is equipped with liquefied ammonia sewage draining valve, and the steam-heated pipe line adds equipped with steam Thermal conditioning valve.

Preferably, oil-drain pipe is provided with draining valve.

The utility model advantageous effect：

1, the utility model aim is that ammonia cool equipment and ammonia storage tank etc. are related to ammonia device by periodical blowdown, in remover apparatus The greasy dirt of accumulation and the mixture of ammonia are that greasy dirt and liquefied ammonia are detached by liquefied ammonia purifier, reach and improve liquefied ammonia matter Amount improves ammonia cooler heat transfer effect.Reduce corrosion of the greasy dirt to tubulation in ammonia cooler, extends service life of equipment.Simultaneously The side effect to catalyst and derived product such as gas ammonia entrained oil dirt is avoided, the product qualities such as nitric acid, composite fertilizer are improved.Tool There are larger economic benefit and social benefit.

2, each ammonia cool equipment is connected by blow-off line with oil expeller, coil pipe is provided in oil expeller, coil pipe connection is steamed Steam pipe road.Liquefied ammonia and Oil stain mixture are discharged into oil expeller, and with steam heat-exchanging in coil pipe, system is recovered to again after flashing to gas ammonia It utilizes, remaining greasy dirt and residue are then excluded from bottom, and liquefied ammonia and greasy dirt is made to be completely separated.

3, it is provided with temperature transmitter on oil expeller to connect with steam heating control valve, bottom draining valve connects with liquid level gauge It connects, realizes temperature automatic control and automatic pollution discharge, prevent temperature too low, the abnormal conditions such as the icing of oil expeller bottom pipe freezes.

4, it is additionally provided with safety valve at the top of the oil expeller, prevents the abnormal feelings such as liquefied ammonia evaporation capacity is excessive or gas ammonia yield is small Condition causes oil expeller superpressure.Play a part of abnormal failure status safety pressure release.

Description of the drawings

Fig. 1 the utility model structure diagrams；

In figure：Liquefied ammonia blow-off pipe 1, oil expeller 2, coil pipe 3, steam-heated pipe line 4, steam condensate (SC) drainpipe 5, gas ammonia return Closed tube road 6, oil-drain pipe 7, liquid level gauge 8, draining valve 9, liquefied ammonia sewage draining valve 10, steam heat control valve 11, temperature pick-up Device 12, safety valve 13, ammonia cooler 14, storage of described liquefied ammonia 15, ammonia spherical tank 16.

Specific implementation mode

With reference to specific embodiment, further details of elaboration is made to the present invention, but embodiments of the present invention are not It is confined to the range of embodiment expression.These embodiments are merely to illustrate the present invention, range and is not intended to limit the present invention.This Outside, after reading present disclosure, those skilled in the art can various modifications may be made to invention, these equivalent variations are same Fall within the appended claims limited range of the present invention.

Embodiment 1

Such as Fig. 1, a kind of synthesis ammonia system liquefied ammonia purifier, including ammonia cooler 14, storage of described liquefied ammonia 15, ammonia spherical tank 16, institute It states ammonia cooler 14, storage of described liquefied ammonia 15, ammonia spherical tank 16 to be connected to oil expeller 2 by liquefied ammonia blow-off pipe 1, be set inside the oil expeller 2 There are coil pipe 3,3 upper end of the coil pipe to be connected to steam-heated pipe line 4,3 lower end of the coil pipe connects with steam condensate (SC) drainpipe 5 Logical, 2 top of the oil expeller is equipped with gas ammonia recovery channel 6.

Preferably, 2 top of the oil expeller is additionally provided with safety valve 13.

Preferably, 2 inside middle and lower part of the oil expeller is equipped with temperature transmitter 12, liquid level gauge 8.

Preferably, 2 bottom of the oil expeller is equipped with oil-drain pipe 7.

Preferably, the liquefied ammonia blow-off pipe 1 is equipped with liquefied ammonia sewage draining valve 10, and the steam-heated pipe line 4, which is equipped with, to be steamed Vapour heats control valve 11.

Preferably, oil-drain pipe 7 is provided with draining valve 9.

Ammonia cool equipment and ammonia storage tank etc. are related into ammonia device and pass through periodical blowdown, the greasy dirt of the interior accumulation of remover apparatus and mixing for ammonia Object is closed, is that greasy dirt and liquefied ammonia are detached by liquefied ammonia purifier, reaches the purpose for recycling gas ammonia except degreasing and impurity.

Each ammonia cool equipment is drained by liquefied ammonia blowdown valve 10 in oil expeller 2, by being changed with the steam being passed through in coil pipe 3 Heat makes liquefied ammonia flash to gas ammonia, is detached with greasy dirt, and gas ammonia is then recovered to system re-using, and greasy dirt is surveyed to be arranged by bottom Oil-piping 7 and draining valve 9 exclude.The liquefied ammonia blow-off pipe 1 is equipped with liquefied ammonia sewage draining valve 10 and connects with 12 signal of temperature transmitter It connects, realizes that automatic heating controls temperature；The steam-heated pipe line 4 be equipped with steam heating control valve 11 with liquid level gauge 8 Signal connects, and realizes automatic pollution discharge.Ensure that synthesis ammonia system liquefied ammonia purifier realizes automatic continuous stable operation, reaches raising Liquid ammonia quality improves ammonia cooler heat transfer effect, reduces corrosion of the greasy dirt to tubulation in ammonia cooler, extends equipment and uses the longevity Order to obtain purpose.

Claims (6)

1. a kind of synthesis ammonia system liquefied ammonia purifier, including ammonia cooler（14）, storage of described liquefied ammonia（15）, ammonia spherical tank（16）, special Sign is, the ammonia cooler（14）, storage of described liquefied ammonia（15）, ammonia spherical tank（16）Pass through liquefied ammonia blow-off pipe（1）With oil expeller（2）Even It is logical, the oil expeller（2）It is internally provided with coil pipe（3）, the coil pipe（3）Upper end and steam-heated pipe line（4）Connection, the coil pipe （3）Lower end and steam condensate (SC) drainpipe（5）Connection, the oil expeller（2）Top is equipped with gas ammonia recovery channel（6）.

2. synthesis ammonia system liquefied ammonia purifier according to claim 1, which is characterized in that the oil expeller（2）Top is also Equipped with safety valve（13）.

3. synthesis ammonia system liquefied ammonia purifier according to claim 1, it is characterised in that：The oil expeller（2）In inside Lower part is equipped with temperature transmitter（12）, liquid level gauge（8）.

4. synthesis ammonia system liquefied ammonia purifier according to claim 1, it is characterised in that：The oil expeller（2）Bottom is set There is oil-drain pipe（7）.

5. synthesis ammonia system liquefied ammonia purifier according to claim 1, it is characterised in that：The liquefied ammonia blow-off pipe（1）On Equipped with liquefied ammonia sewage draining valve（10）, the steam-heated pipe line（4）It is equipped with steam and heats control valve（11）.

6. synthesis ammonia system liquefied ammonia purifier according to claim 1, it is characterised in that：Oil-drain pipe（7）The row of being provided with Fuel tap（9）.