CN106016813A - Method and device for removing solid particulates in ammonia water in ammonia absorption refrigeration process - Google Patents
Method and device for removing solid particulates in ammonia water in ammonia absorption refrigeration process Download PDFInfo
- Publication number
- CN106016813A CN106016813A CN201610524618.7A CN201610524618A CN106016813A CN 106016813 A CN106016813 A CN 106016813A CN 201610524618 A CN201610524618 A CN 201610524618A CN 106016813 A CN106016813 A CN 106016813A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- valve
- filter
- low
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 25
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 20
- 238000005057 refrigeration Methods 0.000 title claims abstract description 16
- 239000007787 solid Substances 0.000 title claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006096 absorbing agent Substances 0.000 claims description 22
- 238000004821 distillation Methods 0.000 claims description 16
- 230000033228 biological regulation Effects 0.000 claims description 13
- 239000013618 particulate matter Substances 0.000 claims description 13
- 238000010612 desalination reaction Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000012267 brine Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract 3
- 238000011001 backwashing Methods 0.000 abstract 2
- 230000001172 regenerating effect Effects 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010408 sweeping Methods 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- -1 by surge tank 2 Chemical compound 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/04—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being ammonia evaporated from aqueous solution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to a method and a device for removing solid particulates in ammonia water in an ammonia absorption refrigeration process. According to an adopted technical scheme, an ammonia water filter is designed on a low-pressure pipeline; the ammonia water filter is designed to be a bypass filter; and meanwhile, nitrogen and desalted water pipelines are designed on a pipeline of a filter. As a backwashing medium for regenerating a filter element, by using the method and the device for removing the solid particulates in the ammonia water in the ammonia absorption refrigeration process, the solid particulates in the ammonia water are effectively removed; meanwhile, the service life of equipment is prolonged; the cost is saved; the ammonia water filter is designed on the low-pressure pipeline; a low-pressure area is liable to isolation and replacement; the inspection safe reliability of the equipment is increased; meanwhile, back-sweeping nitrogen and desalted water are designed in a pipeline of the ammonia water filter and serve as the backwashing medium for regenerating the filter element; the on-line cleaning of the filter element can be realized; the inspection cost is reduced; and inspection risks are decreased.
Description
Technical field
The present invention relates to a kind of remove the method and device of ammonia solid particulate matter in ammonia absorption refrigeration technique.
Background technology
Ammonia absorption refrigeration equipment is made up of parts such as generator, condenser, vaporizer, absorber, circulating pump, choke valves, and working media includes cold-producing medium and absorption, the absorbent of refrigeration by adsorption agent producing cold, and the two forms working medium pair.Concentrated ammonia solution is heated in generator, and the refrigerant vapor isolating certain flow enters in condenser, and refrigerant vapor is cooled within the condenser, and condenses into liquid；Liquid refrigerant, through reducing pressure by regulating flow, enters vaporizer, and in vaporizer, heat absorption evaporation, produces cold effect, and cryogen is become gaseous state from liquid, enters back in absorber；It addition, the weak solution from generator outflow enters absorber after heat exchanger and reducing pressure by regulating flow, absorb the refrigerant vapor of flash-pot, the concentrated solution that absorption process produces is pressurizeed by circulating pump, after heat exchanger heat absorption heats up, reenter generator, such circularly cooling.
Owing to equipment is closed system, and there is the corrosion to carbon steel equipment, if longtime running will cause the rust particulate matter in ammonia to exceed standard in ammonia, impact absorbs and evaporation effect, and solid particulate matter runs up to a certain degree, equipment will be caused erosion corrosion, have a strong impact on the service life of equipment.Therefore, it is necessary to the solid particulate matter in ammonia is removed.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, technical problem to be solved to be to provide a kind of to remove the method and device of ammonia solid particulate matter in ammonia absorption refrigeration technique, it is possible to decrease the waste of liquefied ammonia and the preservative caused in ammonia replacement process.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of remove the method for ammonia solid particulate matter in ammonia absorption refrigeration technique: gas ammonia is absorbed by absorber 1 by the lean ammonia of low pressure resolver 5 becomes strong aqua ammonia, by surge tank 2, aqua ammonia pump 3 is delivered in low-pressure distillation tower 4, it is passed through steam in low pressure resolver 5, gas ammonia in ammonia is evaporated, enters low-pressure distillation tower 4；And the lean ammonia after rectifying column enters ammonia filter 8 by inlet stop valve 7 and enters absorber 1 by outlet shutoff valve 9 after filtering, it is achieved whole circulation；Periodically being closed by filter inlet stop valve 7, the lean ammonia in ammonia filter is discharged battery limit (BL), open after nitrogen valve 13 replaces a period of time, close nitrogen valve 13, exoneration brine valve 15 carries out backwash, the water of backwash is sent battery limit (BL), it is achieved filter element regenerates；After backwash is qualified, opening inlet stop valve 7, after ammonia filter 8 is full of lean ammonia, open outlet shutoff valve 9, ammonia filter 8 comes into operation.
. a kind of remove the device of ammonia solid particulate matter in ammonia absorption refrigeration technique, including absorber 1, surge tank 2, aqua ammonia pump 3, low-pressure distillation tower 4, low pressure resolver 5, regulation valve 6, inlet stop valve 7, ammonia filter 8, outlet shutoff valve 9, ammonia drainage pipeline 10, stop valve 11, low-pressure nitrogen air inlet pipe 12, nitrogen valve 13, desalted water feed tube 14, desalination water valve 15；The discharging opening of described absorber 1 is connected with the charging aperture of surge tank 2, it is connected between surge tank 2 discharging opening with low-pressure distillation tower 4 charging aperture and has aqua ammonia pump 3, described low-pressure distillation tower 4 to be connected with low pressure resolver 5, be connected between described low pressure resolver and absorber 1 and have regulation valve 6；The inlet valve stop valve 7 of ammonia filter 8 is arranged between regulation valve 6 and low pressure resolver 5, outlet valve stop valve 9 is arranged between regulation valve 6 and absorber 1, connect on described ammonia filter 8 and have low-pressure nitrogen air inlet pipe 12, desalted water feed tube 14 and ammonia drainage pipeline 10, it is provided with nitrogen valve 13 in described low-pressure nitrogen air inlet pipe 12, it is provided with desalination water valve 15 on desalted water feed tube 14, ammonia drainage pipeline 10 is provided with stop valve 11.
Compared with prior art the invention have the advantages that.
In order to not affect the properly functioning of system, excision and the impact on system that comes into operation that ammonia filter is designed as other filter, i.e. filter are minimum.In ammonia absorption refrigeration technique, as the inlet/outlet pipeline of ammonia filter before and after lean ammonia water pipe line control valve, i.e. ammonia design of water filters is in low pressure, room temperature, on low concentration ammonia water pipeline, the design pressure grade of equipment reduces, extend service life simultaneously, saved cost.Meanwhile, low-pressure area is readily isolated displacement, adds the security reliability of overhaul of the equipments.Open and inspect the labor intensity of cleaning filter element in order to reduce equipment blocking, on the pipeline of ammonia filter, design blowback simultaneously sweep nitrogen, desalted water, backwash medium as filter element regeneration, filter element can be realized be carried out online, decrease the cost of overhaul, and reduce maintenance risk.
Accompanying drawing explanation
Fig. 1 is a kind of apparatus structure schematic diagram removing ammonia solid particulate matter in ammonia absorption refrigeration technique.
In figure, labelling is as follows: 1 absorber, 2 surge tanks, 3 aqua ammonia pumps, 4 low-pressure distillation towers, 5 low pressure resolvers, 6 regulation valve, 7 inlet stop valve, 8 ammonia filters, 9 outlet shutoff valves, 10 ammonia drainage pipelines, 11 stop valves, 12 low-pressure nitrogen air inlet pipe, 13 nitrogen valves, 14 desalted water feed tubes, 15 desalination water valves.
Detailed description of the invention
Example below combines accompanying drawing, and the invention will be further described.
Embodiment 1
A kind of remove the method for ammonia solid particulate matter in ammonia absorption refrigeration technique: gas ammonia is absorbed by absorber 1 by the lean ammonia of low pressure resolver 5 becomes strong aqua ammonia, by surge tank 2, aqua ammonia pump 3 is delivered in low-pressure distillation tower 4, it is passed through steam in low pressure resolver 5, gas ammonia in ammonia is evaporated, enters low-pressure distillation tower 4；And the lean ammonia after rectifying column enters ammonia filter 8 by inlet stop valve 7 and enters absorber 1 by outlet shutoff valve 9 after filtering, it is achieved whole circulation；Periodically being closed by filter inlet stop valve 7, the lean ammonia in ammonia filter is discharged battery limit (BL), open after nitrogen valve 13 replaces a period of time, close nitrogen valve 13, exoneration brine valve 15 carries out backwash, the water of backwash is sent battery limit (BL), it is achieved filter element regenerates；After backwash is qualified, opening inlet stop valve 7, after ammonia filter 8 is full of lean ammonia, open outlet shutoff valve 9, ammonia filter 8 comes into operation.
. a kind of remove the device of ammonia solid particulate matter in ammonia absorption refrigeration technique, including absorber 1, surge tank 2, aqua ammonia pump 3, low-pressure distillation tower 4, low pressure resolver 5, regulation valve 6, inlet stop valve 7, ammonia filter 8, outlet shutoff valve 9, ammonia drainage pipeline 10, stop valve 11, low-pressure nitrogen air inlet pipe 12, nitrogen valve 13, desalted water feed tube 14, desalination water valve 15；The discharging opening of described absorber 1 is connected with the charging aperture of surge tank 2, it is connected between surge tank 2 discharging opening with low-pressure distillation tower 4 charging aperture and has aqua ammonia pump 3, described low-pressure distillation tower 4 to be connected with low pressure resolver 5, be connected between described low pressure resolver and absorber 1 and have regulation valve 6；The inlet valve stop valve 11 of ammonia filter 8 is arranged between regulation valve 6 and low pressure resolver 5, outlet valve stop valve 11 is arranged between regulation valve 6 and absorber 1, connect on described ammonia filter 8 and have low-pressure nitrogen air inlet pipe 12, desalted water feed tube 14 and ammonia drainage pipeline 10, it is provided with nitrogen valve 13 in described low-pressure nitrogen air inlet pipe 12, it is provided with desalination water valve 15 on desalted water feed tube 14, ammonia drainage pipeline 10 is provided with stop valve 11.
The present invention can summarize with other the concrete form without prejudice to the spirit or essential characteristics of the present invention.Therefore, no matter from the point of view of which point, the embodiment above of the present invention all can only be considered the description of the invention and can not limit invention, claims indicate the scope of the present invention, and the scope of the present invention is not pointed out in above-mentioned explanation, therefore, any change in the implication suitable with claims of the present invention and scope, all it is considered as being included within the scope of the claims.
Claims (2)
1. one kind removes the method for ammonia solid particulate matter in ammonia absorption refrigeration technique, it is characterized in that: gas ammonia absorption is become strong aqua ammonia by the lean ammonia of low pressure resolver (5) by absorber (1), by surge tank (2), aqua ammonia pump (3) is delivered in low-pressure distillation tower (4), it is passed through steam in low pressure resolver (5), gas ammonia in ammonia is evaporated, enters low-pressure distillation tower (4)；And the lean ammonia after rectifying column enters ammonia filter (8) by inlet stop valve (7) and enters absorber (1) by outlet shutoff valve (9) after filtering, it is achieved whole circulation；Periodically filter inlet stop valve (7) is closed, the lean ammonia in ammonia filter is discharged battery limit (BL), after opening nitrogen valve (13) displacement a period of time, close nitrogen valve (13), exoneration brine valve (15) carries out backwash, and the water of backwash is sent battery limit (BL), it is achieved filter element regenerates；After backwash is qualified, opening inlet stop valve (7), after ammonia filter (8) is full of lean ammonia, open outlet shutoff valve (9), ammonia filter (8) comes into operation.
2. one kind removes the device of ammonia solid particulate matter in ammonia absorption refrigeration technique, it is characterised in that: include absorber (1), surge tank (2), aqua ammonia pump (3), low-pressure distillation tower (4), low pressure resolver (5), regulation valve (6), inlet stop valve (7), ammonia filter (8), outlet shutoff valve (9), ammonia drainage pipeline (10), stop valve (11), low-pressure nitrogen air inlet pipe (12), nitrogen valve (13), desalted water feed tube (14), desalination water valve (15)；The discharging opening of described absorber (1) is connected with the charging aperture of surge tank (2), being connected between surge tank (2) discharging opening with low-pressure distillation tower (4) charging aperture and have aqua ammonia pump (3), described low-pressure distillation tower (4) to be connected with low pressure resolver (5), being connected between described low pressure resolver with absorber (1) has regulation valve (6)；The inlet valve stop valve (7) of ammonia filter (8) is arranged between regulation valve (6) and low pressure resolver (5), outlet valve stop valve (9) is arranged between regulation valve (6) and absorber (1), the upper connection of described ammonia filter (8) has low-pressure nitrogen air inlet pipe (12), desalted water feed tube (14) and ammonia drainage pipeline (10), it is provided with nitrogen valve (13) on described low-pressure nitrogen air inlet pipe (12), it is provided with desalination water valve (15) on desalted water feed tube (14), ammonia drainage pipeline (10) is provided with stop valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524618.7A CN106016813A (en) | 2016-07-06 | 2016-07-06 | Method and device for removing solid particulates in ammonia water in ammonia absorption refrigeration process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524618.7A CN106016813A (en) | 2016-07-06 | 2016-07-06 | Method and device for removing solid particulates in ammonia water in ammonia absorption refrigeration process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106016813A true CN106016813A (en) | 2016-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610524618.7A Pending CN106016813A (en) | 2016-07-06 | 2016-07-06 | Method and device for removing solid particulates in ammonia water in ammonia absorption refrigeration process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106016813A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253558A (en) * | 2018-03-19 | 2019-01-22 | 华洋通信科技股份有限公司 | A kind of cyclic ammonia water UTILIZATION OF VESIDUAL HEAT IN refrigeration unit automatic back-flushing device and method |
| CN114046450A (en) * | 2021-10-28 | 2022-02-15 | 山东宏旭化学股份有限公司 | Two-in-one system and method for purging and replacing hydrocyanic acid pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157942A (en) * | 1991-06-14 | 1992-10-27 | Kim Dao | Regenerative absorption cycles with multiple stage absorber |
| CN2890777Y (en) * | 2006-04-18 | 2007-04-18 | 江苏双良空调设备股份有限公司 | Lithium bromide absorption type refrigerator with filter |
| CN202057107U (en) * | 2011-03-29 | 2011-11-30 | 江苏嘉隆化工有限公司 | Ammonia-utilizing refrigerating device |
| CN103277931A (en) * | 2013-06-25 | 2013-09-04 | 东南大学 | Nanofluid ammonia water absorption refrigeration cycle device |
| CN103629973A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement solar sewage source heat pump system |
-
2016
- 2016-07-06 CN CN201610524618.7A patent/CN106016813A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157942A (en) * | 1991-06-14 | 1992-10-27 | Kim Dao | Regenerative absorption cycles with multiple stage absorber |
| CN2890777Y (en) * | 2006-04-18 | 2007-04-18 | 江苏双良空调设备股份有限公司 | Lithium bromide absorption type refrigerator with filter |
| CN202057107U (en) * | 2011-03-29 | 2011-11-30 | 江苏嘉隆化工有限公司 | Ammonia-utilizing refrigerating device |
| CN103277931A (en) * | 2013-06-25 | 2013-09-04 | 东南大学 | Nanofluid ammonia water absorption refrigeration cycle device |
| CN103629973A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement solar sewage source heat pump system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253558A (en) * | 2018-03-19 | 2019-01-22 | 华洋通信科技股份有限公司 | A kind of cyclic ammonia water UTILIZATION OF VESIDUAL HEAT IN refrigeration unit automatic back-flushing device and method |
| CN109253558B (en) * | 2018-03-19 | 2021-02-26 | 华洋通信科技股份有限公司 | Automatic back flushing device and method for refrigerating unit utilizing waste heat of circulating ammonia water |
| CN114046450A (en) * | 2021-10-28 | 2022-02-15 | 山东宏旭化学股份有限公司 | Two-in-one system and method for purging and replacing hydrocyanic acid pipeline |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20161012 |