CN107388729A - Comprehensively utilize the recirculated water energy-saving and cooling device and method of air separation unit cold energy - Google Patents
Comprehensively utilize the recirculated water energy-saving and cooling device and method of air separation unit cold energy Download PDFInfo
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- CN107388729A CN107388729A CN201710630667.3A CN201710630667A CN107388729A CN 107388729 A CN107388729 A CN 107388729A CN 201710630667 A CN201710630667 A CN 201710630667A CN 107388729 A CN107388729 A CN 107388729A
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- Prior art keywords
- water
- cooling
- inlet pipe
- recirculated water
- cold energy
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
- F25J2270/912—Liquefaction cycle of a low-boiling (feed) gas in a cryocooler, i.e. in a closed-loop refrigerator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention belongs to the energy-conservation field of comprehensive utilization of the cryogenic technique of air separation unit.A kind of recirculated water energy-saving and cooling device and method for comprehensively utilizing air separation unit cold energy, including housing, the housing include upper shell and lower house, exhaust outlet are provided with the top of the upper shell；Normal temperature circulation water water inlet pipe, packing layer and the air inlet pipe being successively set in upper shell；With the heat exchanger being arranged in lower house, the inlet and outlet both ends of the heat exchanger connect with cooling medium inlet pipe and cooling medium outlet respectively；The lower house bottom is provided with chilled water outlet.The present invention can effectively comprehensively utilize cryogenic liquid vaporizer cold energy and the recirculated water latent heat of vaporization to reduce the temperature of recirculated water, reach chilldown system cancel handpiece Water Chilling Units also can normal table operation purpose, so as to effectively reduce the input of entreprise cost and energy consumption, the purpose of energy-saving and emission-reduction is finally realized.
Description
Technical field
The invention belongs to the energy-conservation field of comprehensive utilization of the cryogenic technique of air separation unit, and in particular to one kind comprehensive utilization is empty
The recirculated water energy-saving and cooling device and method of separating device cold energy.
Background technology
At present, the air cooling of full low pressure hydrogen-free argon producing air separation unit uses nitrogen precooling system, and the system is mainly wrapped
Three equipment are included, one is the water-cooling tower for tentatively cooling down recirculated water by the drying nitrogen of cooling box, and one is water cooled tower
The freon handpiece Water Chilling Units that recirculated water after preliminary cooling further cools, another is further dropped by freon handpiece Water Chilling Units
Recirculated water (abbreviation chilled water) after temperature makes air cooled air cooling compressor.And the fluid product of air separation unit is more with -185 DEG C
The liquid form of left and right leads to cryogenic liquid tank from ice chest liquid outlet through vacuum tube, adds when it is desired to be used through cryogenic liquid pump
Used after pressure by being sent to gas equipment after special air temperature type vaporizer (or water bath type vaporizer) gasification.Add such a
Press in vaporescence, the cold of cryogenic liquid (- 185 DEG C) just lost in vain, according to water bath type vaporizer not only in vain
It has lost cold and also to consume extra steam and carry out heated vaporizer reclaimed water to provide cryogenic liquid vaporizer institute calorific requirement；Even
Extra heat energy need not be consumed using air temperature type vaporizer, but it is obviously also very uneconomical to have slatterned the part cold
's.In existing air separation unit, chilldown system above needs freon handpiece Water Chilling Units offer cold to carry out cooling circulating water, and
Carburetion system below further through vaporizer the cold of liquid argon slatterning in vain, this flow configuration is obviously not reaching to
Optimal energy-saving effect.
The content of the invention
The purpose of the present invention is to be directed to above-mentioned problem and shortage, there is provided it is a kind of reasonable in design, it can integrate
The comprehensive utilization air separation unit cold energy of circulating water temperature is reduced using cryogenic liquid vaporizer cold energy and the recirculated water latent heat of vaporization
Recirculated water energy-saving and cooling device and method.
To reach above-mentioned purpose, adopted the technical scheme that：
A kind of recirculated water energy-saving and cooling device for comprehensively utilizing air separation unit cold energy, including housing, the housing include upper
Housing and lower house, the upper shell top are provided with exhaust outlet；Be successively set on normal temperature circulation water water inlet pipe in upper shell,
Packing layer and air inlet pipe, the air inlet pipe has been passed through dry gas, and the temperature of the dry gas is low compared with the temperature of recirculated water,
The dry gas and recirculated water contact heat-exchanging in packing layer；With the heat exchanger being arranged in lower house, the heat exchanger
Inlet and outlet both ends connect with cooling medium inlet pipe and cooling medium outlet respectively；The lower house bottom is provided with freezing
Water out, the recirculated water is after the latent heat of vaporization cooling of itself and the cold energy cooling of cooling medium, chilled water out row
Go out.
The dry gas is drying nitrogen or/and dirty nitrogen in air separation cooling box.
The cooling medium is the cryogenic liquid product of air separation unit.
Two flow-disturbing mouths are correspondingly arranged on the lower casing body sidewall, flow-disturbing water pump is provided between two flow-disturbing mouths.
The exhaust ports are provided with demister, and the demister carries out gas-liquid separation to the gas of exhaust ports.
Thermometer, observation window and liquid level gauge are provided with the housing.
Liquid distribution trough is provided between the normal temperature circulation water water inlet pipe and packing layer, gas is provided with the air inlet pipe
Body distributor.
A kind of circulating water cooling method of circulating water cooling device using above-mentioned comprehensive utilization cold energy, its feature exist
In comprising the following steps：
Dry gas in air separation cooling box is introduced to the housing central section of circulating water cooling device through air inlet pipe, by normal temperature a,
Recirculated water is introduced and is sprayed on packing layer by normal temperature circulation water water inlet pipe, and dry gas and recirculated water are abundant in packing layer
Contact heat-exchanging, the single order for completing recirculated water cool and latent heat of vaporization cooling；
B, the recirculated water after step a coolings, is flowed into lower house, when the recirculated water in lower house reaches certain liquid
After the height of position, the fluid product of air separation unit is passed through in heat exchanger, recirculated water completes circulation by the heat exchange with fluid product
The second order of water is cooled, and the temperature for reaching demand forms chilled water, and chilled water is drawn by chilled water outlet and used；Liquid
Product vaporizes after heat exchange, and is drawn and used by cooling medium outlet.
Flow-disturbing water pump is provided with the lower casing body sidewall, flow-disturbing water pump drives the recirculated water recycle stream in lower house
It is dynamic, realize uniformly cooling.
Using above-mentioned technical proposal, acquired beneficial effect is：
Overall construction design of the present invention is reasonable, and it can effectively comprehensively utilize cryogenic liquid vaporizer cold energy and circulation water vapor
Latent heat reduces the temperature of recirculated water, reach chilldown system cancel handpiece Water Chilling Units also can normal table operation purpose, so as to having
The input and energy consumption of the reduction entreprise cost of effect, finally realize the purpose of energy-saving and emission-reduction.
The product structure design of the application is reasonable, and it can not only rely on cold and hot exchange to complete cooling, while can utilize
The latent heat of vaporization of recirculated water is cooled, and so as to realize maximally utilizing for energy, selection of the application for low-temperature receiver relies on
Air separation unit itself, while disclosure satisfy that cryogenic liquid product directly uses for user, realize and dual subtract consumption.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Sequence number in figure：110 it is upper shell, 120 be lower house, 130 is exhaust outlet；210 be normal temperature circulation water water inlet pipe,
220 be packing layer, 230 be air inlet pipe, 300 be heat exchanger, 310 be cooling medium inlet pipe, 320 be cooling medium outlet,
400 it is chilled water outlet, 510 be flow-disturbing mouth, 520 be flow-disturbing water pump, 600 be demister, 700 be liquid distribution trough, 800 is gas
Body distributor.
Embodiment
The embodiment of the present invention is elaborated below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of recirculated water energy-saving and cooling device for comprehensively utilizing air separation unit cold energy of the present invention, including housing,
Wherein, housing includes upper shell 110 and lower house 120, and the top of upper shell 110 is provided with exhaust outlet 130；In upper shell 110
Normal temperature circulation water water inlet pipe 210, packing layer 220 and air inlet pipe 230 are disposed with, in normal temperature circulation water water inlet pipe 210 with filling out
Liquid distribution trough 700 is provided between the bed of material 220, gas distributor 800 is provided with the air inlet pipe 230.
Air inlet pipe 230 is passed through drying nitrogen and dirty nitrogen, drying nitrogen and the dirt of about 12 DEG C of temperature in air separation cooling box
Nitrogen and recirculated water abundant contact heat-exchanging in packing layer 220, the packing layer in the application are the scattered landfill of at least 8 meters floor heights
Material, so as to realize abundant contact heat-exchanging,；Heat exchanger 300, the inlet and outlet both ends difference of heat exchanger are provided with lower house 120
Connected with cooling medium inlet pipe 310 and cooling medium outlet 320, its cooling medium produces for the cryogenic liquid of air separation unit
Product, such as liquid nitrogen；Be provided with chilled water outlet 400 in the bottom of lower house 120, recirculated water by itself latent heat of vaporization cooling and
After the cold energy cooling of cooling medium, chilled water out 400 is discharged.
Because cryogenic liquid product, such as temperature of liquid nitrogen are -185 DEG C or so, thus it is corresponding in the side wall of lower house 120
Two flow-disturbing mouths 510 are provided with, are provided with flow-disturbing water pump 520 between two flow-disturbing mouths 510 so that chilled water can realize that inside is followed
Ring, avoid freezing.
Because drying nitrogen and dirty nitrogen form the gas of saturation after heat exchange, its water content is big, free water be present,
Demister 600 is provided with exhaust outlet 130, so that demister 600 carries out gas-liquid point to the gas at exhaust outlet 130
From.
For the ease of being monitored to whole process, it is auxiliary that thermometer, observation window and liquid level gauge etc. are provided with housing
Help detecting instrument (not shown).
Disclosed herein as well is a kind of circulating water cooling of the circulating water cooling device using above-mentioned comprehensive utilization cold energy
Method, it comprises the following steps：
Dry gas in air separation cooling box is introduced to the housing central section of circulating water cooling device through air inlet pipe, by normal temperature a,
Recirculated water is introduced and is sprayed on packing layer by normal temperature circulation water water inlet pipe, and dry gas and recirculated water are abundant in packing layer
Contact heat-exchanging, the single order for completing recirculated water cool and latent heat of vaporization cooling；
B, the recirculated water after step a coolings, is flowed into lower house, when the recirculated water in lower house reaches certain liquid
After the height of position, the fluid product of air separation unit is passed through in heat exchanger, recirculated water completes circulation by the heat exchange with fluid product
The second order of water is cooled, and the temperature for reaching demand forms chilled water, and chilled water is drawn by chilled water outlet and used；Liquid
Product vaporizes after heat exchange, and is drawn and used by cooling medium outlet.
The present invention can effectively comprehensively utilize cryogenic liquid vaporizer cold energy and the recirculated water latent heat of vaporization to reduce recirculated water
Temperature, reach chilldown system cancel handpiece Water Chilling Units also can normal table operation result, finally realize the purposes of energy-saving and emission-reduction.With
One example display explanation, the chilldown system of certain oxyen manutactory's air separation unit are produced chilled water using the method for the present invention, cancelled
One 60 × 104Kcal/h handpiece Water Chilling Units, the installed powers of the handpiece Water Chilling Units are 135KW, the annual power consumption of the unit
For 1182600KW, calculated according to market 0.65 yuan/Kwh of average electricity rates, economic benefit can be brought using the present invention every year
More than 760000 yuan.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, that described in above-described embodiment and specification is the present invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appended claims and its
Equivalent defines.
Claims (9)
- A kind of 1. recirculated water energy-saving and cooling device for comprehensively utilizing air separation unit cold energy, it is characterised in that including：Housing, the housing include upper shell and lower house, exhaust outlet are provided with the top of the upper shell；Normal temperature circulation water water inlet pipe, packing layer and the air inlet pipe being successively set in upper shell, the air inlet pipe have been passed through drying Gas, and the temperature of the dry gas is low compared with the temperature of recirculated water, the dry gas contacts with recirculated water in packing layer Heat exchange；With the heat exchanger being arranged in lower house, the inlet and outlet both ends of the heat exchanger respectively with cooling medium inlet pipe and cooling Media outlet pipe connects；Chilled water outlet is provided with the lower house bottom, the recirculated water is situated between by the latent heat of vaporization cooling and cooling of itself After the cold energy cooling of matter, chilled water out discharge.
- 2. the circulating water cooling device of comprehensive utilization cold energy according to claim 1, it is characterised in that：The dry gas For the drying nitrogen in air separation cooling box or/and dirty nitrogen.
- 3. the circulating water cooling device of comprehensive utilization cold energy according to claim 1, it is characterised in that：The cooling medium For the cryogenic liquid product of air separation unit.
- 4. the circulating water cooling device of comprehensive utilization cold energy according to claim 1, it is characterised in that：The lower casing side Two flow-disturbing mouths are correspondingly arranged on wall, flow-disturbing water pump is provided between two flow-disturbing mouths.
- 5. the circulating water cooling device of comprehensive utilization cold energy according to claim 1, it is characterised in that：The exhaust ports Demister is provided with, the demister carries out gas-liquid separation to the gas of exhaust ports.
- 6. the circulating water cooling device of comprehensive utilization cold energy according to claim 1, it is characterised in that：Set on the housing It is equipped with thermometer, observation window and liquid level gauge.
- 7. the circulating water cooling device of comprehensive utilization cold energy according to claim 1, it is characterised in that：The normal temperature circulation Liquid distribution trough is provided between water water inlet pipe and packing layer, gas distributor is provided with the air inlet pipe.
- 8. a kind of circulating water cooling method of the circulating water cooling device of comprehensive utilization cold energy using described in claim 1, its It is characterised by, comprises the following steps：Dry gas in air separation cooling box is introduced to the housing central section of circulating water cooling device through air inlet pipe, by the circulation of normal temperature a, Water is introduced and is sprayed on packing layer by normal temperature circulation water water inlet pipe, and dry gas and recirculated water fully contact in packing layer Heat exchange, the single order for completing recirculated water cool and latent heat of vaporization cooling；B, the recirculated water after step a coolings, is flowed into lower house, when the recirculated water in lower house reaches certain liquid level height After degree, the fluid product of air separation unit is passed through in heat exchanger, recirculated water completes recirculated water by the heat exchange with fluid product Second order is cooled, and the temperature for reaching demand forms chilled water, and chilled water is drawn by chilled water outlet and used；Fluid product Vaporized after heat exchange, and drawn and used by cooling medium outlet.
- 9. circulating water cooling method according to claim 8, it is characterised in that：Set and thanks for your hospitality on the lower casing body sidewall Flowing water pump, flow-disturbing water pump drive the recirculated water in lower house to circulate, and realize uniformly cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630667.3A CN107388729A (en) | 2017-07-28 | 2017-07-28 | Comprehensively utilize the recirculated water energy-saving and cooling device and method of air separation unit cold energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630667.3A CN107388729A (en) | 2017-07-28 | 2017-07-28 | Comprehensively utilize the recirculated water energy-saving and cooling device and method of air separation unit cold energy |
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| CN107388729A true CN107388729A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710630667.3A Pending CN107388729A (en) | 2017-07-28 | 2017-07-28 | Comprehensively utilize the recirculated water energy-saving and cooling device and method of air separation unit cold energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708490A (en) * | 2019-01-07 | 2019-05-03 | 安徽晋煤中能化工股份有限公司 | A kind of New Cycle water cooling system |
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| CN201618902U (en) * | 2010-02-05 | 2010-11-03 | 中国北方车辆研究所 | Liquid nitrogen gasification circulating water cooling device |
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| CN207065994U (en) * | 2017-07-28 | 2018-03-02 | 河南开元空分集团有限公司 | Comprehensively utilize the recirculated water energy-saving and cooling device of air separation unit cold energy |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124997A2 (en) * | 1983-04-01 | 1984-11-14 | The BOC Group, Inc. | Method of recovering solvent vapour |
| US4545134A (en) * | 1983-04-01 | 1985-10-08 | The Boc Group, Inc. | Dual vessel heat exchange systems |
| CN2339962Y (en) * | 1998-10-23 | 1999-09-22 | 清华大学 | Water heater of recovering waste-heat of refrigerating system |
| JP2000212644A (en) * | 1999-01-20 | 2000-08-02 | Komatsu Ltd | Regeneration of furnace gas and apparatus therefor |
| CN201618902U (en) * | 2010-02-05 | 2010-11-03 | 中国北方车辆研究所 | Liquid nitrogen gasification circulating water cooling device |
| CN103134344A (en) * | 2013-03-16 | 2013-06-05 | 德州贝诺风力机械设备有限公司 | Open-close type energy-saving cooling tower |
| CN104083981A (en) * | 2014-07-02 | 2014-10-08 | 天津大学 | Direct-contact-type deep cooling device for recycling volatile organic compound waste gas and recycling method |
| CN104213984A (en) * | 2014-08-22 | 2014-12-17 | 中国华能集团清洁能源技术研究院有限公司 | Method and device for reducing IGCC circulating cooling water temperature by using polluted nitrogen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708490A (en) * | 2019-01-07 | 2019-05-03 | 安徽晋煤中能化工股份有限公司 | A kind of New Cycle water cooling system |
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Application publication date: 20171124 |
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