CN109350977A - Steam pressure-reducing device and working method - Google Patents
Steam pressure-reducing device and working method Download PDFInfo
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- CN109350977A CN109350977A CN201811302211.5A CN201811302211A CN109350977A CN 109350977 A CN109350977 A CN 109350977A CN 201811302211 A CN201811302211 A CN 201811302211A CN 109350977 A CN109350977 A CN 109350977A
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- steam
- heat exchanger
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- gas
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0041—Use of fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
- B01D1/305—Demister (vapour-liquid separation)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention relates to fields, provide a kind of steam pressure-reducing device, it include: booster pump, evaporator, pressure reducing valve and generator, evaporator includes inlet, condensation-water drain, steam inlet and steam (vapor) outlet, inlet is connected to by booster pump with extraneous sewage, steam inlet is passed through primary steam, condensation-water drain is connected by the first heat exchanger channels of pressure reducing valve and generator, the connection of second heat exchanger channels of steam (vapor) outlet and generator, the first heat exchanger channels and the second heat exchanger channels of generator exchange heat.Invention additionally discloses a kind of working methods based on steam pressure-reducing device of the present invention.The present invention realizes the decompression of primary steam, while using the heat of pressure reduction, realizing the minimizing processing of sewage, the present invention is energy saving, and structure is simple, and low energy consumption, low in cost.
Description
Technical field
The present invention relates to steam pressure-reducing technical fields, more particularly to a kind of steam pressure-reducing device and working method.
Background technique
Currently, there is " high energy in the industrial enterprises such as many power plants or most of chemical plant of included power plant
The problem of low use ".Required steam pressure is relatively low in many process flows, but steam pressure caused by boiler is opposite
It is higher, just there is " supply and marketing " unbalanced phenomenon.And in order to meet the requirement of technique, most of way is to pass through increasing at present
If pressure reducing valve, while cooling system is configured, by the steam pressure-reducing desuperheat of high pressure to suitable state.But maximum existing for such way
Problem is: the high steam of generation is high-grade energy, reduces its grade by pressure reducing valve, but does not reduce its grade
This portion of energy use, result in the waste of energy.Such way simultaneously, it usually needs decompression drops in cooling water system
Heat caused by temperature is taken away, and system investments is caused to increase.Therefore, effective benefit of energy during steam pressure-reducing how is realized
With most important.On the other hand, most of industries at present including heating plant or most chemical company are required to discharge a large amount of dirts
Water, particularly industrial high-salt wastewater, seriously pollute environment, especially increasingly tight to the pollution of underground, groundwater resources etc.
Weight and extremely difficult recovery.Although social cry, the policy expectancy for generally implementing sewage zero-discharge and water resource recycling existing at present
It is attempted with enterprise, but processing method conventional at present, the technology road including pretreatment+film process+MVR evaporation or multiple-effect evaporation
Line, existing greatest problem is: initial investment cost is huge, and operation energy consumption and operation and maintenance expenses are with excessively high.Therefore, as can designing one kind
Decompressor is realized the decrement of sewage using the energy in pressure reduction, then can either realize the decompression of steam, realize waste heat
Deep exploitation, it is energy saving, and can reduce the cost and energy consumption of sewage treatment, promote the realization of sewage zero-discharge.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of steam pressure-reducing device and working method, solves high steam in the prior art and exist
Not the problem of this portion of energy that steam grade reduces is not used, causes energy waste in decompression process, and solve
The initial investment cost of steam pressure-reducing device is huge in the prior art, operation energy consumption and the excessively high problem of operation and maintenance expenses.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of steam pressure-reducing devices, comprising: booster pump, subtracts evaporator
Pressure valve and generator, the evaporator include inlet, condensation-water drain, steam inlet and steam (vapor) outlet, and the inlet is logical
It crosses booster pump to be connected to extraneous sewage, the steam inlet is passed through primary steam, and the condensation-water drain passes through pressure reducing valve and institute
The first heat exchanger channels connection of generator is stated, the steam (vapor) outlet is connect with the second heat exchanger channels of the generator.
Wherein, the evaporator includes First Heat Exchanger and gas-liquid separator, the inlet, the steam inlet and institute
It states condensation-water drain and is all set in the First Heat Exchanger, the First Heat Exchanger also passes through air-liquid pipeline and the gas-liquid separation
Device connection, and the inlet and gas-liquid channel are connected to the first heat exchanger channels of the First Heat Exchanger, the steam inlet
The second heat exchanger channels of the First Heat Exchanger are connected to the condensation-water drain, the steam (vapor) outlet is set to the gas-liquid
Separator, the gas-liquid separator further include liquid outlet.
Wherein, further include Fluidizer, inert solid particle be filled in the Fluidizer, and be connected to the inlet with
Between the booster pump.
It wherein, further include filter, the filter is set at the liquid outlet of the gas-liquid separator.
Wherein, the Fluidizer includes the first inert solid particle import and the second inert solid particle import, and described the
One inert solid particle import is used to supplement inert solid particle, the second inert solid particle import and the mistake from the external world
The solids outlet of filter connects.
Wherein, the generator includes the second heat exchanger.
Invention additionally discloses a kind of working methods such as steam pressure-reducing device of the invention, comprising:
Sewage of low concentration enters evaporator after booster pump is pressurized, through inlet, primary steam by steam inlet into
Enter to evaporator, sewage of low concentration exchanges heat with primary steam, and sewage of low concentration vaporization generates sewage steam, primary steam liquid
Change and generates a condensed water；
The condensed water generated is passed through the first heat exchanger channels of generator after depressurizing by pressure reducing valve, the sewage of generation steams
Vapour is passed through the second heat exchanger channels of generator, and a condensed water exchanges heat with sewage steam, and condensing water vapor generates secondary steaming
Vapour, sewage steam liquefied generate time condensation water.
Wherein, the evaporator includes First Heat Exchanger and gas-liquid separator, in First Heat Exchanger sewage of low concentration with
Primary steam exchanges heat, and is converted into gas-liquid mixture and a condensed water respectively, and the gas-liquid mixture of generation is passed through gas
Liquid/gas separator is separated into high-concentration sewage and sewage steam.
Wherein, further include Fluidizer and filter, provide inert solid by import from the first inert solid particle of Fluidizer
Particle, and it is passed through inlet, inert solid particle hits the wall of First Heat Exchanger, effectively prevent First Heat Exchanger inner wall knot
Dirt ensure that First Heat Exchanger heat exchange efficiency, passes through gas-liquid separator and enters filter, inert solid particle is filtered out
Come, then be passed through the second inert solid particle import of Fluidizer, recycles.After inert solid particle object is consumed,
Inert solid particle object is provided by import by the first inert solid particle again.
(3) beneficial effect
A kind of steam pressure-reducing device provided by the invention and working method, using the primary steam of high pressure as heat source,
Concentration is evaporated to pressurized sewage of low concentration in evaporator, generates sewage steam and condensed water, and utilize sewage steam
As heat source, exchange heat with condensed water, it is corresponding to generate clean secondary steam, according to the pressure of required secondary steam,
It can use booster pump and pressure adjusting carried out to sewage of low concentration.The present invention realizes the decompression of primary steam, while utilizing pressure
The heat that power reduces realizes the minimizing processing of sewage, and the present invention is energy saving, and structure is simple, and low energy consumption, low in cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of steam pressure-reducing device of the present invention；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2.
In figure, 1, booster pump；2, First Heat Exchanger；21, inlet；22, condensation-water drain；23, steam inlet；24, gas
Liquid pipe road；3, gas-liquid separator；31, steam (vapor) outlet；4, pressure reducing valve；5, generator；6, filter；61, solids outlet；
7, Fluidizer；71, the first inert solid particle import；72, the second inert solid particle import.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Figure 1, the present invention discloses a kind of steam pressure-reducing device, comprising: booster pump 1, evaporator, pressure reducing valve 4 and hair
Raw device 5, the evaporator includes inlet 21, condensation-water drain 22, steam inlet 23 and steam (vapor) outlet 31, the inlet 21
It is connected to by booster pump 1 with extraneous sewage, the steam inlet 23 is passed through primary steam, and the condensation-water drain 22 passes through decompression
Valve 4 is connect with the first heat exchanger channels of the generator 5, the second heat exchanger channels of the steam (vapor) outlet 31 and the generator 5
Connection, the first heat exchanger channels and the fluid in the second heat exchanger channels of the generator 5 exchange heat.
Specifically, primary steam enters evaporator by steam inlet 23, sewage of low concentration is carried out at pressurization by booster pump 1
It after reason, is passed through in evaporator by inlet 21 and is exchanged heat with primary steam, sewage of low concentration is heated vaporization, transforms into dirt
Water vapour is passed through the second heat exchanger channels of generator 5 from steam (vapor) outlet 31；And primary steam cool down, transform into condensed water from
Condensation-water drain 22 depressurizes by pressure reducing valve 4, is passed through the first heat exchanger channels of generator 5；Condensed water and heat in generator 5
Sewage steam exchange heat, condensing water vapor is converted into low-pressure steam, and sewage steam liquefied is converted into condensed water discharge.
A kind of steam pressure-reducing device provided by the invention and working method, using the primary steam of high pressure as heat source,
Sewage of low concentration is evaporated in evaporator, generates sewage steam and condensed water, and using sewage steam as heat source, and it is cold
Condensate exchanges heat, and the corresponding secondary steam for generating cleaning can use booster pump according to the pressure of required secondary steam
Pressure adjusting is carried out to sewage of low concentration.The present invention realizes the decompression of primary steam, while using the heat of pressure reduction, real
The minimizing processing of existing sewage, the present invention is energy saving, and structure is simple, and low energy consumption, low in cost.
Wherein, the evaporator includes First Heat Exchanger 2 and gas-liquid separator 3, the inlet 21, the steam inlet
23 and the condensation-water drain 22 be all set in the First Heat Exchanger 2, the First Heat Exchanger 2 also by air-liquid pipeline 24 with
Gas-liquid separator 3 connects, and the inlet 21 and gas-liquid channel 24 are connected to the first of the First Heat Exchanger 2 and exchange heat and lead to
Road, the steam inlet 23 are connected to the second heat exchanger channels of the First Heat Exchanger 2 with the condensation-water drain 22, and described the
First heat exchanger channels of one heat exchanger 2 exchange heat with the fluid in the second heat exchanger channels, and the steam (vapor) outlet 31 is set to institute
Gas-liquid separator 3 is stated, the gas-liquid separator 3 further includes liquid outlet (unmarked in figure).Specifically, First Heat Exchanger 2 is used for
Extraneous sewage and primary steam exchange heat, and after exchanging heat, the water in extraneous sewage can be converted into steam and be passed through in generator 5,
And remaining is denseer sewage, therefore the present embodiment is separated steam and remaining strong sewage by setting gas-liquid separator 3
It opens, vapor portion is passed through generator 5, and strong sewage is then discharged from the liquid outlet of gas-liquid separator 3, enters sewage post-processing work
In skill process.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1:
As shown in Fig. 2, further including Fluidizer 7, it is filled with inert solid particle in the Fluidizer 7, and is connected to described
Between inlet 21 and the booster pump 1, inert solid particle is input in First Heat Exchanger 2, due to inert solid particle
Can not dissolve, during following drainage flow, constantly hit First Heat Exchanger 2 wall, thus prevent the calcium in sewage,
Sediment fouling on wall that magnesium ion generates, ensure that the heat exchange property of heat exchanger.
It preferably, further include filter 6, the filter 6 is set at the liquid outlet of the gas-liquid separator 3, is played pair
Sewage goes out the filtering of liquid, and inert solid particle object is filtered out.Further, the Fluidizer 7 includes the first inert solid
Article inlet 71 and the second inert solid particle import 72, the first inert solid particle import 71 are used for lazy from external world's supplement
Property solid particle, the second inert solid particle import 72 are connect with the solids outlet of the filter 6.Specifically
, the first inert solid particle import 71 for supplementing inert solid particle manually, since filter 6 connects in gas-liquid separator 3
Liquid outlet, sewage is filtered, the filtrate filtered out include from the first inert solid particle import 71 supplement it is lazy
Property solid particle.
Wherein, the generator 5 includes the second heat exchanger, the structure of generator 5 and heat exchanger-type seemingly, according to actual needs
It further includes other component needed for generator 5.
Invention additionally discloses a kind of working methods such as steam pressure-reducing device of the invention, comprising:
Sewage of low concentration enters evaporator after booster pump is pressurized, through inlet, primary steam by steam inlet into
Enter to evaporator, sewage of low concentration exchanges heat with primary steam, and sewage of low concentration vaporization generates sewage steam, primary steam liquid
Change and generates a condensed water；
The condensed water generated is passed through the first heat exchanger channels of generator after depressurizing by pressure reducing valve, the sewage of generation steams
Vapour is passed through the second heat exchanger channels of generator, and a condensed water exchanges heat with sewage steam, and condensing water vapor generates secondary steaming
Vapour, sewage steam liquefied generate time condensation water.
Specifically, primary steam vaporizes to sewage of low concentration as heat source and provides heat, and primary steam is then in evaporator
Cooling liquefaction becomes a condensed water；The steam that sewage of low concentration vaporization generates in generator is as heat source, to primary condensation
Water vapor provides heat, and a condensed water heating is vaporizated into secondary steam, and the steam cooling liquefaction of sewage of low concentration vaporization becomes
Time condensation water.The pressure of secondary steam according to output, is adjusted, so that secondary using pressure of the booster pump to sewage
The pressure of steam meets requirement.This method realizes primary steam decompression, and the heat for being using pressure reduction, realizes dirty
Water minimizing processing.
Wherein, the evaporator includes First Heat Exchanger 2 and gas-liquid separator 3, the sewage of low concentration in First Heat Exchanger 2
It exchanges heat with primary steam, is converted into gas-liquid mixture and a condensed water respectively, the gas-liquid mixture of generation is passed through
Gas-liquid separator 3 is separated into high-concentration sewage and sewage steam.Evaporator in the present embodiment include two be separately provided
One heat exchanger 2 and gas-liquid separator 3, heat exchange processing of the First Heat Exchanger 2 for primary steam and sewage of low concentration, gas-liquid separation
Device is then used to separate the gas-liquid mixture that sewage of low concentration generates, and the steam separated is passed through generator 5, isolates
The relatively strong sewage come discharges after processing.
As shown in Fig. 2, further including Fluidizer 7 and filter 6, supplemented from the first inert solid particle import 71 of Fluidizer
Inert solid particle, and it is passed through inlet, inert solid particle hits the wall of First Heat Exchanger 2, simultaneously by gas-liquid separator
Into filter 6, inert solid particle is filtered out, then is passed through the second inert solid particle import 72 of Fluidizer, is recycled
It utilizes.The present embodiment hits the wall of First Heat Exchanger 2 using inert solid particle, avoids the calcium and magnesium ion in water in wall
Upper fouling guarantees the heat exchange property of heat exchanger.Specifically, inert solid can also be used when evaporator is in hot conditions
Particle hair carries out good antiscale property, and the method that other good antiscale properties further can also be used, including but not limited to: crystal seed method adds antisludging agent
Method, acid adding method, purification method for pretreating and control solid-to-liquid ratio method.
A kind of steam pressure-reducing device provided by the invention and working method, using the primary steam of high pressure as heat source,
Sewage of low concentration is evaporated in evaporator, generates sewage steam and condensed water, and using sewage steam as heat source, and it is cold
Condensate exchanges heat, and the corresponding secondary steam for generating cleaning can use booster pump according to the pressure of required secondary steam
The pressure of sewage of low concentration is adjusted.The present invention realizes the decompression of primary steam, while utilizing the heat of pressure reduction,
It realizes the minimizing processing of sewage, and good antiscale property measure is further set, including increases inert solid particle Fluidizer and filtering
Device device avoids evaporator wall fouling, and the present invention is energy saving, and structure is simple, and low energy consumption, low in cost.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of steam pressure-reducing device characterized by comprising booster pump, evaporator, pressure reducing valve and generator, the evaporation
Device includes inlet, condensation-water drain, steam inlet and steam (vapor) outlet, and the inlet is connected by booster pump and extraneous sewage
Logical, the steam inlet is passed through primary steam, and the condensation-water drain is logical by the first heat exchange of pressure reducing valve and the generator
Road connection, the steam (vapor) outlet are connect with the second heat exchanger channels of the generator.
2. steam pressure-reducing device as described in claim 1, which is characterized in that the evaporator includes First Heat Exchanger and gas-liquid
Separator, the inlet, the steam inlet and the condensation-water drain are all set in the First Heat Exchanger, and described first
Heat exchanger also passes through air-liquid pipeline and connect with the gas-liquid separator, and the inlet and gas-liquid channel are connected to described first
First heat exchanger channels of heat exchanger, what the steam inlet was connected to the First Heat Exchanger with the condensation-water drain second changes
The passage of heat, the steam (vapor) outlet are set to the gas-liquid separator, and the gas-liquid separator further includes liquid outlet.
3. steam pressure-reducing device as claimed in claim 2, which is characterized in that it further include Fluidizer, filling in the Fluidizer
There is inert solid particle, and is connected between the inlet and the booster pump.
4. steam pressure-reducing device as claimed in claim 3, which is characterized in that further include filter, the filter is set to institute
It states at the liquid outlet of gas-liquid separator.
5. steam pressure-reducing device as claimed in claim 4, which is characterized in that the Fluidizer includes the first inert solid particle
Import and the second inert solid particle import, the first inert solid particle import are used to supplement inert solid from the external world
Grain, the second inert solid particle import are connect with the solids outlet of the filter.
6. the steam pressure-reducing device as described in any one of claim 1-5, which is characterized in that the generator includes second
Heat exchanger.
7. a kind of working method of the steam pressure-reducing device as described in any one of claim 1-6, which is characterized in that packet
It includes:
Sewage of low concentration enters evaporator after booster pump is pressurized, through inlet, and primary steam is entered by steam inlet
Evaporator, sewage of low concentration exchange heat with primary steam, and sewage of low concentration vaporization generates sewage steam, and primary steam liquefaction produces
A raw condensed water；
The condensed water generated is passed through the first heat exchanger channels of generator after depressurizing by pressure reducing valve, the sewage steam of generation is logical
Enter the second heat exchanger channels of generator, a condensed water exchanges heat with sewage steam, and condensing water vapor generates secondary steam, dirty
Water vapour liquefaction generates time condensation water.
8. working method as claimed in claim 7, which is characterized in that the evaporator includes First Heat Exchanger and gas-liquid separation
Device, sewage of low concentration exchanges heat with primary steam in First Heat Exchanger, is converted into gas-liquid mixture and primary cold respectively
The gas-liquid mixture of generation is passed through gas-liquid separator, is separated into high-concentration sewage and sewage steam by condensate.
9. working method as claimed in claim 8, which is characterized in that further include Fluidizer and filter, from the of Fluidizer
One inert solid particle provides inert solid particle by import, and is passed through inlet, and inert solid particle hits First Heat Exchanger
Wall passes through gas-liquid separator and enters filter, inert solid particle filtered out, then be passed through the second inertia of Fluidizer
Solid particle import, recycles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811302211.5A CN109350977A (en) | 2018-11-02 | 2018-11-02 | Steam pressure-reducing device and working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811302211.5A CN109350977A (en) | 2018-11-02 | 2018-11-02 | Steam pressure-reducing device and working method |
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| CN109350977A true CN109350977A (en) | 2019-02-19 |
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| CN201811302211.5A Pending CN109350977A (en) | 2018-11-02 | 2018-11-02 | Steam pressure-reducing device and working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898500A (en) * | 2019-11-29 | 2020-03-24 | 广东闻扬环境科技有限公司 | Filter and heat exchange system |
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