CN207950720U - The system of condensing recovery dinitrogen tetroxide exhaust gas resource - Google Patents
The system of condensing recovery dinitrogen tetroxide exhaust gas resource Download PDFInfo
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- CN207950720U CN207950720U CN201721849559.7U CN201721849559U CN207950720U CN 207950720 U CN207950720 U CN 207950720U CN 201721849559 U CN201721849559 U CN 201721849559U CN 207950720 U CN207950720 U CN 207950720U
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Abstract
The utility model provides a kind of system of condensing recovery dinitrogen tetroxide exhaust gas resource, belongs to exhaust-gas treatment field.It includes condensing heat exchanger, gas-liquid separator, electric control valve, condensate liquid collecting tank and low-temperature cold water unit, glycol water buffering and expansion drum；Exhaust pipe containing dinitrogen tetroxide steam enters the condensing heat exchanger, and the gas-liquid mixture export pipeline of the condensing heat exchanger connects the gas-liquid separator, and the gas-liquid separator is connect by air communicating pipe with the condensate liquid collecting tank.In systems, low-temperature cold water unit provides cold and glycol water temperature is down to operation temperature, and glycol water cools down the exhaust gas containing dinitrogen tetroxide steam by heat exchange, reaches hypersaturated state, by gas-liquid separation, dinitrogen tetroxide recycling is realized.Glycol water is both intermediate heat transfer working medium and cold-storage working substance in this technique, ensures system even running.
Description
Technical field
The utility model belongs to exhaust-gas treatment field, and in particular to the system of Liquid Propellant of Rocket exhaust-gas treatment.
Background technology
Dinitrogen tetroxide is one of most widely used propellant, is widely used in space launch and weaponry section
Grind experiment field.In the courses of work such as metaideophone, filling, storehouse reflux, temperature adjustment, various equipment adjustment, can all it generate a large amount of useless
Gas.According to GB5044-85《Occupational exposure toxicant Harm level classification》, belong to highly toxic substance.For a long time, exhaust gas passes through more
High altitude discharge, or burning or solution absorb etc. modes handle, both increase cost, cause secondary pollution, at the same also result in compared with
The big wasting of resources.
When being cooled to certain temperature to mixed gas, when certain ingredient reaches hypersaturated state, it can be achieved that condensing recovery.Four
The difficulty of nitrous oxide condensing recovery is that the technical target of the product of recycling must be made to meet national standard code requirement, otherwise produces
Raw new harmful substance to be treated, condensing recovery lose meaning.The utility model solves how real under not contractive condition
The problem of existing dinitrogen tetroxide exhaust-gas efficient condensing recovery, while the technical target of the product after recycling meets national standard specification and wants
It asks.
Utility model content
In view of problem above existing for this field, the purpose of this utility model is open a kind of for dinitrogen tetroxide exhaust gas
The system of condensing recovery.Utilize the utility model, you can engineer application design is carried out, it is useless to dinitrogen tetroxide in propellant operation
Gas carries out condensing recovery processing, realizes most of resource recycling, while reducing environmental pollution, improves back-end processing dress
Set processing exhaust gas efficiency and effect.
Realize that the utility model above-mentioned purpose technical solution is：
A kind of system of condensing recovery dinitrogen tetroxide exhaust gas resource, including condensing heat exchanger, gas-liquid separator, electric adjustable
Save valve, condensate liquid collecting tank and low-temperature cold water unit, glycol water buffering and expansion drum；
Exhaust pipe containing dinitrogen tetroxide steam enters the condensing heat exchanger, and the gas-liquid of the condensing heat exchanger is mixed
It closes object export pipeline and connects the gas-liquid separator, the gas-liquid separator passes through air communicating pipe and the condensate liquid collecting tank
Connection；
The condensing heat exchanger is using glycol water as refrigerant, described in the condensing heat exchanger is connected by refrigerant pipeline
Low-temperature cold water unit, the low-temperature cold water unit connection glycol water buffering and expansion drum, the buffering and expansion drum connect
Connect the condensing heat exchanger.
Wherein, the condensing heat exchanger is tilting in such a way that exhaust gas flows downward, and condensing heat exchanger is shell and tube, exhaust gas
Tube side is walked, the direction of exhaust gas flowing and the angle of horizontal plane are 3~60 °, and condensation heel row goes out the outlet of gas-liquid mixture positioned at cold
Solidifying heat exchanger lowest point.
Condensate liquid is blown into gas-liquid separator by the impulse force flowed with gas in time, keeps higher heat exchange efficiency；Make simultaneously cold
Condensate liquid is not retained in solidifying heat exchanger.
Wherein, the electric control valve for regulation and control system exhaust gas flow is set on the waste gas outlet pipe road.
Electric control valve is placed on System Back-end, rather than front end, decompression of reduction exhaust gas during condensing recovery are swollen
Swollen degree realizes that dinitrogen tetroxide is in hypersaturated state in condensation process, improves organic efficiency to greatest extent.
Preferably, pass through the top (gas phase of air communicating pipe and the condensate liquid collecting tank in the middle part of the gas-liquid separator
Space) connection.Gas-liquid separator bottom connect (liquid by liquid line with condensate liquid collecting tank lower part (liquid Space)
The position that pipeline stretches into away from the height of tank bottom about 2~10% at).
During condensing recovery, when condensate liquid collecting tank is connected to gas-liquid separator gas-phase space, gravity, condensation are utilized
Liquid flow in collecting tank, does not have to take out negative pressure certainly, and prior art collecting tank need to take out negative pressure；Terminate simultaneously in condensing recovery work
Afterwards, after collecting tank fluid temperature increases, the purpose for increasing container gas-phase space is played, the safety of system is increased.
Wherein, the low-temperature cold water unit uses double-compressor parallel form, carries PLC control system, and power is reconciled defeated
The mode gone out is step-less adjustment.
To adapt to exhaust-gas treatment flow larger fluctuation situation of change in scope of design in practical application, unit operation is improved
Efficiency, the stability of operation, the reliability of system.
Preferably, glycol water is provided on the pipeline that the low-temperature cold water unit connects buffering and expansion drum to follow
Ring pumps.
Ethylene glycol solution circulating pump is between low-temperature cold water unit and ethylene glycol solution buffering expansion drum, rather than low temperature
Between handpiece Water Chilling Units and condensing heat exchanger, most efficiently and reliably ensure that condensation temperature meets control and requires.
Wherein, the component contacted with dinitrogen tetroxide in system is the material of polytetrafluoroethylene (PTFE) material or austenitic stainless steel
Matter.
Polytetrafluoroethylene (PTFE) or austenitic stainless steel are compatible with dinitrogen tetroxide level-one, thereby using dinitrogen tetroxide in the process
Corrosion failure, component is not caused not to pollute dinitrogen tetroxide component.
This system is arranged ethylene glycol solution and buffers and expansion drum, according to processing exhaust gas design discharge scale design its volume,
Meet system glycol water total volume requirement, suitable liquid capacity and the gas compartment play the role of three：First, ensureing
System condensing temperature is stablized, low-temperature cold water unit stable operation, adjusts gentle；Second is that from when glycol water expands with heat and contract with cold
It is acted on to expansion tank；Third, guarantee system can short period interior operation upon actuation.
Using the system of the utility model, the technique for carrying out Two-way Cycle condensing recovery dinitrogen tetroxide exhaust gas resource, including：
Low temperature water chiller provides cold and glycol water freezes, and then glycol water enters condensing heat exchanger
The exhaust gas containing dinitrogen tetroxide steam is cooled to hypersaturated state by heat exchange, then through gas-liquid separation, by four oxygen of liquid
Change phenodiazine and collects recycling；Glycol water enters buffering expansion drum buffering after cooling down exhaust gas, enters back into low temperature water chiller and follows
Inscription of loop；
Relationship is designed in proportion for system process parameters and exhaust-gas treatment flow, and the technological parameter includes low-temperature cold water
The power of the assembling unit, glycol water total volume, condensing heat exchanger power.
Further, the temperature of the exhaust gas containing dinitrogen tetroxide steam is 0~18 DEG C, into condensing heat exchanger
The temperature of glycol water is -10~-5 DEG C, and the exhaust gas containing dinitrogen tetroxide steam is cooled to -9~-2 DEG C.
Wherein, technological parameter is scaled up according to exhaust-gas treatment flow：It is 100m for exhaust gas flow3The system of/h,
The refrigeration work consumption of the low temperature water chiller is 20~30kW, and the total volume of glycol water is 0.2~0.4m3；For useless
Gas disposal flow is 300m3The refrigeration work consumption of the system of/h, the low temperature water chiller is 75~85kW, glycol water
Total volume is 0.6~1.2m3。
The particular content of process parameters design is shown in Table 1.
1 engineering design main technologic parameters of table choose and mutual proportionate relationship table
This technique reaches hypersaturated state, realizes condensation by being cooled down to the exhaust gas containing dinitrogen tetroxide steam
Recycling.The cooling of dinitrogen tetroxide exhaust gas is realized using " low temperature water chiller " and " glycol water " dual cycle cooling system
Purpose.Using low temperature water chiller as low-temperature receiver, the cold energy of generation is passed into glycol water, is then secondly transferred to need cold
The exhaust gas of solidifying recycling, forms gas-liquid mixture, by gas-liquid separation, realizes dinitrogen tetroxide condensing recovery.Second two in this technique
Alcohol solution is both intermediate heat transfer working medium and cold-storage working substance, ensures system even running.
Compared with prior art, the utility model has the following advantages：
The utility model discloses a kind of for the technological process of dinitrogen tetroxide waste gas condensation recycling, key technology, work
Journey design is chosen using main technologic parameters and mutual proportionate relationship, utilizes technological process provided by the utility model, crucial skill
The engineering system of art and parameters of engineering design design, has and operates steadily, the high feature of organic efficiency.
Using the technology of the utility model, dinitrogen tetroxide waste gas condensation organic efficiency can >=90%.
The utility model is returned at the same time as being a kind of process producing high-purity dinitrogen tetroxide on a small quantity from exhaust gas
Dinitrogen tetroxide purity >=99.5% after receipts.
Description of the drawings
Fig. 1 is the process flow chart that the utility model is used to handle dinitrogen tetroxide exhaust gas.
In figure, 1, exhaust gas entrance；2, electrical ball valve；3, thermometer and sensing transducer；4 flowmeters；5, pressure gauge and biography
Feel transmitter；6, waste gas condensation heat exchanger；7, gas-liquid separator；8, electric control valve；9, condensate liquid collecting tank；10, water at low temperature
Cold group；11, circulating pump；12, ethylene glycol solution buffering and expansion drum；13, liquid level gauge and sensing transducer；14, gas connection
Pipe；15, shut-off valve；16, safety valve.
The identical symbol of shape represents equipment or instrument of the same race in figure.
Specific implementation mode
Illustrate the utility model below by most preferred embodiment.Those skilled in the art institute it should be understood that, embodiment only
For illustrating the utility model rather than for limiting the scope of the utility model.
In embodiment, unless otherwise instructed, means used are the means of this field routine.
Embodiment 1
Referring to Fig. 1, a kind of system of Two-way Cycle condensing recovery dinitrogen tetroxide exhaust gas resource, including condensing heat exchanger 6, gas
Liquid/gas separator 7, electric control valve 8, condensate liquid collecting tank 9 and low-temperature cold water unit 10, circulating pump 11, ethylene glycol solution buffering and
Expansion drum 12；
Exhaust pipe containing dinitrogen tetroxide steam enters the condensing heat exchanger 6, the gas-liquid of the condensing heat exchanger 6
Mixture outlet pipeline connects the gas-liquid separator 7, and 7 bottom of the gas-liquid separator passes through liquid line and the condensate liquid
9 liquid Space of collecting tank (liquid line stretches into position away from pot bottom about 10cm) connection, middle part pass through air communicating pipe 14 and institute
The connection of 9 gas-phase space of condensate liquid collecting tank is stated, 7 top of the gas-liquid separator is provided with waste gas outlet pipeline, in the exhaust gas
Electric control valve 8 is set on export pipeline；
For the condensing heat exchanger 6 using glycol water as refrigerant, the condensing heat exchanger 6 connects institute by refrigerant pipeline
Low-temperature cold water unit 10 is stated, the low-temperature cold water unit 10 connects circulating pump 11, and the circulating pump 11 connects glycol water
Buffering and expansion drum 12, the buffering and expansion drum 12 connect the condensing heat exchanger 6.
System configuration automatic detection and control system (omits) on figure, realizes system according to setting condition automatic running.This reality
Apply a main technologic parameters and device parameter value such as following table：
2 Practical Project device main technologic parameters table of table
The glycol water that the present embodiment uses is 50% mass concentration.
Condensing heat exchanger 6 is tubular heat exchanger, and shape is cylindric tank body, and glycol water walks shell side, tank body
The angle theta of axis and horizontal plane is 15 °, and the one end for the tank body that exhaust gas enters condenses heel row higher than one end of exhaust gas discharge tank body
The outlet for going out waste liquid is located at 6 lowest point of condensing heat exchanger.
Referring to Fig. 1, configured on system pipeline or equipment electrical ball valve 2, thermometer and sensing transducer 3, flowmeter 4,
Pressure gauge and sensing transducer 5, liquid level gauge and sensing transducer, shut-off valve, safety valve etc. include the cut-off of refrigerant pipeline setting
Valve 15, setting liquid level gauge and sensing transducer 13 in ethylene glycol solution buffering and expansion drum, are connected to condensate liquid collecting tank
Branch is connected on air communicating pipe 14, branch road sets safety valve 16 etc..
Low-temperature cold water unit 10 is double-compressor unit parallel form, carries PLC control system, and power reconciles the side of output
Formula is the sections 30%-100% step-less adjustment.The non-metallic component material contacted with exhaust gas or dinitrogen tetroxide condensate liquid in this system
Matter is polytetrafluoroethylene (PTFE) material, and metal parts material is 022Cr17Ni12Mo2 austenitic stainless steels.Associated metal parts surface
Degreasing is carried out before installation, pickling, passivation, neutralizes cleaning treatment, ensures that internal system is clean by construction technology, after realizing recycling
Dinitrogen tetroxide technical indicator meet national standard code requirement.
The method of operation of this system is：
Exhaust gas containing dinitrogen tetroxide steam enters system from exhaust gas entrance 1, and carrying out condensation by condensing heat exchanger 6 changes
Heat forms gas-liquid mixture, carries out gas-liquid separation subsequently into gas-liquid separator 7, gas is discharged into rear end by electric control valve 8
Gas handling system, liquid enter condensate liquid collecting tank 9 and are collected.Wherein exhaust gas flow adjusting control relies on electric control valve
8 opening sizes control.
Low-temperature cold water unit 10 provides cold, is exchanged heat by the evaporator inside unit, by glycol water temperature
Degree is down to system required temperature, and the power that glycol water is provided by circulating pump 11 is in waste gas condensation heat exchanger 6, ethylene glycol
It is recycled between solution buffering and expansion drum 12, circulating pump 11, low temperature water chiller 10.
It shown below two batches result of implementation parameter.
3 actual processing effect of table
Above embodiment is only that preferred embodiments of the present invention are described, not to the utility model
Range be defined, under the premise of not departing from the spirit of the design of the utility model, this field ordinary engineering and technical personnel to this
The all variations and modifications that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine
It protects in range.
Claims (7)
1. a kind of system of condensing recovery dinitrogen tetroxide exhaust gas resource, which is characterized in that including condensing heat exchanger (6), gas-liquid
Separator (7), electric control valve (8), condensate liquid collecting tank (9) and low-temperature cold water unit (10), glycol water buffering and
Expansion drum (12)；
Exhaust pipe containing dinitrogen tetroxide steam enters the condensing heat exchanger (6), the gas-liquid of the condensing heat exchanger (6)
Mixture outlet pipeline connects the gas-liquid separator (7), the gas-liquid separator (7) by air communicating pipe (14) with it is described
Condensate liquid collecting tank (9) connects；
For the condensing heat exchanger (6) using glycol water as refrigerant, the condensing heat exchanger (6) connects institute by refrigerant pipeline
Low-temperature cold water unit (10), low-temperature cold water unit (10) the connection glycol water buffering and expansion drum (12) are stated, it is described
Buffering and expansion drum (12) connect the condensing heat exchanger (6).
2. system according to claim 1, which is characterized in that the condensing heat exchanger (6) flowed downward according to exhaust gas
Mode is tilting, and condensing heat exchanger is shell and tube, and exhaust gas walks tube side, and the angle in path and horizontal plane that exhaust gas flows downward is 3~
60 °, the outlet that condensation heel row goes out gas-liquid mixture is located at condensing heat exchanger lowest point.
3. system according to claim 1, which is characterized in that be provided with waste gas outlet pipe at the top of the gas-liquid separator
The electric control valve (8) for regulation and control system exhaust gas flow is arranged in road on the waste gas outlet pipe road.
4. system according to claim 1, which is characterized in that pass through air communicating pipe in the middle part of the gas-liquid separator (7)
(14) it is connect with the top of the condensate liquid collecting tank (9), gas-liquid separator (7) bottom passes through liquid line and the condensate liquid
Collecting tank (9) lower part connects.
5. system according to claim 1, which is characterized in that the low-temperature cold water unit (10) uses double-compressor parallel
Form, carries PLC control system, and the mode that power reconciles output is step-less adjustment.
6. system according to claim 1, which is characterized in that connect buffering and expansion in the low-temperature cold water unit (10)
Glycol water circulating pump (11) is provided on the pipeline of tank (12).
7. according to Claims 1 to 4 any one of them system, which is characterized in that the portion contacted with dinitrogen tetroxide in system
Part is polytetrafluoroethylene (PTFE) material or austenite stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849559.7U CN207950720U (en) | 2017-12-26 | 2017-12-26 | The system of condensing recovery dinitrogen tetroxide exhaust gas resource |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849559.7U CN207950720U (en) | 2017-12-26 | 2017-12-26 | The system of condensing recovery dinitrogen tetroxide exhaust gas resource |
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| CN207950720U true CN207950720U (en) | 2018-10-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057257A (en) * | 2017-12-26 | 2018-05-22 | 中国人民解放军63605部队 | The system and technique of condensation recycling dinitrogen tetroxide exhaust gas resource |
| CN109158066A (en) * | 2018-09-21 | 2019-01-08 | 德清县虎马中环佳科技有限公司 | A kind of emulsion paint reaction unit convenient for charging |
-
2017
- 2017-12-26 CN CN201721849559.7U patent/CN207950720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057257A (en) * | 2017-12-26 | 2018-05-22 | 中国人民解放军63605部队 | The system and technique of condensation recycling dinitrogen tetroxide exhaust gas resource |
| CN109158066A (en) * | 2018-09-21 | 2019-01-08 | 德清县虎马中环佳科技有限公司 | A kind of emulsion paint reaction unit convenient for charging |
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