CN205425907U - Be used for cold ware cooling system of synthetic ammonia enterprise decarbonization feed gas refrigerated ammonia - Google Patents
Be used for cold ware cooling system of synthetic ammonia enterprise decarbonization feed gas refrigerated ammonia Download PDFInfo
- Publication number
- CN205425907U CN205425907U CN201620201838.1U CN201620201838U CN205425907U CN 205425907 U CN205425907 U CN 205425907U CN 201620201838 U CN201620201838 U CN 201620201838U CN 205425907 U CN205425907 U CN 205425907U
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- China
- Prior art keywords
- ammonia
- cooling water
- cooling
- ammonia cooler
- cold ware
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Abstract
The utility model relates to a be used for cold ware cooling system of synthetic ammonia enterprise decarbonization feed gas refrigerated ammonia, including ammonia cold ware, low temperature cooling water set and expansion tank, be provided with cooling water inlet and coolant outlet on the casing of the cold ware of ammonia, the delivery port of low temperature cooling water set is linked together with the cooling water inlet of the cold ware of ammonia, and the coolant outlet of the cold ware of ammonia is linked together with expansion tank's water inlet, and expansion tank's delivery port is linked together with the return water mouth of low temperature cooling water set. Be different from prior art, the utility model discloses change the cooling mode of the cold ware of ammonia into the low temperature water -cooled by the direct -cooled formula of liquid ammonia, adoption low temperature cooling water set provides the cooling water medium to the cold ware of ammonia, because the CO2 in the decarbonization feed gas can not react with the cooling water, produces the leakage of decarbonization feed gas with the drawing breakage phenomenon of tube sheet junction even heat exchanger tube bundles consequently appears, also can not cause the pipeline of the cold ware of ammonia to block up to fundamentally has stopped the problem that the cold ware emergence of ammonia was become invalid.
Description
Technical field
This utility model relates to cooling device technical field, a kind of ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas.
Background technology
Ammonia cooler for the cooling of ammonia enterprise decarburization unstripped gas is generally two type III pressure vessel, shell and tube exchanger.By certain operating pressure (generally 2.8MPa), the tube side medium decarburization unstripped gas of operating temperature 40-45 DEG C during use, in ammonia cooler, carry out heat exchange with the shell side medium liquefied ammonia of certain operating pressure (generally 1.0MPa), operating temperature 5 DEG C, after heat exchange, the temperature of decarburization unstripped gas is cooled to about 15 DEG C.
Finding in practical operation runs, all there is the problem lost efficacy in the ammonia cooler of many ammonia enterprises, and concrete manifestation form is heat-exchanging tube bundle and tube sheet attachment weld drawing crack, the CO in decarburization unstripped gas2Leakage mixes generation white crystals thing carbon ammonium with gas ammonia, causes gas ammonia pipeline section plugging.
For the problems referred to above, many enterprises propose multiple Curve guide impeller, such as changed heat-exchanging tube bundle and the shell material of ammonia cooler into 304 rustless steels by 20# steel, to prevent from forming galvanic corrosion, it is ensured that the thermal expansion elongation at action of thermal difference lower house Yu heat-exchanging tube bundle does not affect the connection pulling-out force of exchanger tubes and tubesheets；Shell side part is carried out PWHT of stress relieving；Swollen mode etc. is sticked in the intensity weldering that is connected by of exchanger tubes and tubesheets.By facts have proved, above-mentioned various improvement technology, labor intensity is big, construct loaded down with trivial details, engineering cost is high, although can extend the normal service life of ammonia cooler, but can not stop the generation of above-mentioned heat-exchanging tube bundle and the drawing crack phenomenon of tube sheet junction at all, once there is drawing crack phenomenon, still result in gas ammonia pipeline section plugging and cause ammonia cooler to lose efficacy.
Utility model content
In order to overcome the defect of above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas that can fundamentally stop ammonia cooler generation Problem of Failure.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas, including ammonia cooler, low-temperature cold water unit and expansion tank, cooling water inlet and coolant outlet it is provided with on the housing of described ammonia cooler, the described outlet of low-temperature cold water unit is connected with the cooling water inlet of ammonia cooler, the coolant outlet of described ammonia cooler is connected with the water inlet of expansion tank, and the outlet of described expansion tank is connected with the water return outlet of low-temperature cold water unit.
Wherein, described cooling water inlet and coolant outlet are separately positioned on the housing side of ammonia cooler, described cooling water inlet is provided with multiple and is layered setting from top to bottom, multiple cooling water inlets on sustained height are uniformly distributed along the housing circumference of ammonia cooler, multiple cooling water inlets on differing heights stagger setting, and described coolant outlet is positioned at the top of all cooling water inlets.
Wherein, the connecting line of the cooling water inlet of the outlet of described low-temperature cold water unit and ammonia cooler is provided with water flow switch.
Wherein, the outlet of described expansion tank is provided with cooling water pump on the connecting line of the water return outlet of low-temperature cold water unit.
The beneficial effects of the utility model are: be different from prior art, this utility model is changed the methods for cooling of ammonia cooler into water at low temperature cold type by liquefied ammonia direct-cooling type, change the liquefied ammonia import of ammonia cooler into cooling water inlet, the gas ammonia of ammonia cooler is exported and changes coolant outlet into, low-temperature cold water unit is used to provide cooling aqueous medium to ammonia cooler, the decarburization unstripped gas entered in ammonia cooler heat exchanger tube is cooled down, due to the CO in decarburization unstripped gas2Will not react with cooling water, even if therefore heat-exchanging tube bundle and the drawing crack phenomenon of tube sheet junction occurring and producing the leakage of decarburization unstripped gas, also not result in the pipeline blockage of ammonia cooler, thus fundamentally stopped the problem that ammonia cooler occurs to lose efficacy.
Accompanying drawing explanation
Fig. 1 show the structural representation of the ammonia cooler cooling system of this utility model embodiment.
Fig. 2 show the side view of the ammonia cooler of this utility model embodiment.
Fig. 3 show the top view of the ammonia cooler of this utility model embodiment.
Label declaration:
1-ammonia cooler；2-low-temperature cold water unit；3-expansion tank；4-coolant outlet；5,6-cooling water inlet；7-water flow switch；8-cooling water pump.
Detailed description of the invention
By describing technology contents of the present utility model in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained.
The design of this utility model most critical is: changed the methods for cooling of ammonia cooler into water at low temperature cold type by liquefied ammonia direct-cooling type.
Refer to shown in Fig. 1 to Fig. 3, the ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas of this utility model embodiment, including ammonia cooler 1, low-temperature cold water unit 2 and expansion tank 3, cooling water inlet and coolant outlet 4 it is provided with on the housing of described ammonia cooler 1, the outlet of described low-temperature cold water unit 2 is connected with the cooling water inlet of ammonia cooler 1, the coolant outlet of described ammonia cooler 1 is connected with the water inlet of expansion tank 3, and the outlet of described expansion tank 3 is connected with the water return outlet of low-temperature cold water unit 2.
During actual application, by measuring and calculating and calculating, obtain decarburization unstripped gas and reach the refrigeration duty needed for technic index temperature, and select low-temperature cold water unit 2 accordingly, the cooling water of uniform temperature, certain flow is produced by unit self work, entering ammonia cooler 1 to cool down decarburization unstripped gas, the cooling water after heat exchange enters back into low-temperature cold water unit 2 after expansion tank 3 and cools down.If quantitative cooling water temperature requires can meet the needs of decarburization unstripped gas refrigeration duty more than 5 DEG C, then use the clean water through pretreatment as circulating cooling medium；If quantitative cooling water temperature requires could meet the needs of decarburization unstripped gas refrigeration duty below 5 DEG C, in order to prevent the vaporizer of low-temperature cold water unit 2 from freezing, then need to add the refrigerating mediums such as a certain proportion of calcium chloride, ethylene glycol or glacial epoch coolant in cooling water.
Knowable to foregoing description, the beneficial effects of the utility model are: be different from prior art, this utility model is changed the methods for cooling of ammonia cooler into water at low temperature cold type by liquefied ammonia direct-cooling type, change the liquefied ammonia import of ammonia cooler into cooling water inlet, the gas ammonia of ammonia cooler is exported and changes coolant outlet into, use low-temperature cold water unit to provide cooling aqueous medium to ammonia cooler, the decarburization unstripped gas entered in ammonia cooler heat exchanger tube is cooled down, due to the CO in decarburization unstripped gas2Will not react with cooling water, even if therefore heat-exchanging tube bundle and the drawing crack phenomenon of tube sheet junction occurring and producing the leakage of decarburization unstripped gas, also not result in the pipeline blockage of ammonia cooler, thus fundamentally stopped the problem that ammonia cooler occurs to lose efficacy.
Further, described cooling water inlet and coolant outlet 4 are separately positioned on the housing side of ammonia cooler 1, described cooling water inlet is provided with multiple and is layered setting from top to bottom, multiple cooling water inlets on sustained height are uniformly distributed along the housing circumference of ammonia cooler 1, multiple cooling water inlets on differing heights stagger setting, and described coolant outlet 4 is positioned at the top of all cooling water inlets.Fig. 2 and Fig. 3 is shown in which a kind of embodiment, cooling water inlet has 6, it is divided into upper and lower two-layer, it is positioned at the cooling water inlet 5 on upper strata to be uniformly distributed along the housing circumference of ammonia cooler 1, being positioned at the cooling water inlet 6 of lower floor to be uniformly distributed along the housing circumference of ammonia cooler 1, the cooling water inlet 5 on upper strata and the cooling water inlet 6 of lower floor then stagger setting.
Knowable to foregoing description, the beneficial effects of the utility model are: owing to being mostly not provided with deflection plate in ammonia cooler, and this utility model all there occurs change to methods for cooling and the cooling medium of ammonia cooler, in order to ensure improved ammonia cooler heat transfer effect, guarantee that cooling down water is formed without laminar flow in ammonia cooler, short stream, this utility model is provided with multiple layering from top to bottom and arranges and be positioned at the cooling water inlet of different azimuth in the side of ammonia cooler housing, thus in use may select different cooling water inlets and the cooling water state in ammonia cooler is adjusted, avoid the formation of laminar flow or short stream, reach optimal heat transfer effect.
Further, the connecting line of the cooling water inlet of the outlet of described low-temperature cold water unit 2 and ammonia cooler 1 is provided with water flow switch 7.
Knowable to foregoing description, the beneficial effects of the utility model are: by arranging water flow switch, can play the effect of anti-icing protection.
Further, the outlet of described expansion tank 3 is provided with cooling water pump 8 on the connecting line of the water return outlet of low-temperature cold water unit 2.Further, cooling water pump 8 is provided with two, is arranged in parallel on the connecting line of the water inlet of outlet and the low-temperature cold water unit 2 of expansion tank 3, and one of them cooling water pump 8 can use as reserve pump.
Knowable to foregoing description, the beneficial effects of the utility model are: by arranging cooling water pump, it can be ensured that system stability runs reliably.
In sum, the ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas that this utility model provides, simple in construction, with low cost, and fundamentally stopped the problem that ammonia cooler occurs to lose efficacy, there is quite varied market application foreground.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalents utilizing this utility model description and accompanying drawing content to be made; or directly or indirectly it is used in relevant technical field, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (4)
1. the ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas, it is characterized in that: include ammonia cooler, low-temperature cold water unit and expansion tank, cooling water inlet and coolant outlet it is provided with on the housing of described ammonia cooler, the described outlet of low-temperature cold water unit is connected with the cooling water inlet of ammonia cooler, the coolant outlet of described ammonia cooler is connected with the water inlet of expansion tank, and the outlet of described expansion tank is connected with the water return outlet of low-temperature cold water unit.
Ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas the most according to claim 1, it is characterized in that: described cooling water inlet and coolant outlet are separately positioned on the housing side of ammonia cooler, described cooling water inlet is provided with multiple and is layered setting from top to bottom, multiple cooling water inlets on sustained height are uniformly distributed along the housing circumference of ammonia cooler, multiple cooling water inlets on differing heights stagger setting, and described coolant outlet is positioned at the top of all cooling water inlets.
Ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas the most according to claim 1, it is characterised in that: it is provided with water flow switch on the connecting line of the outlet of described low-temperature cold water unit and the cooling water inlet of ammonia cooler.
Ammonia cooler cooling system for the cooling of ammonia enterprise decarburization unstripped gas the most according to claim 1, it is characterised in that: the outlet of described expansion tank is provided with cooling water pump on the connecting line of the water return outlet of low-temperature cold water unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620201838.1U CN205425907U (en) | 2016-03-16 | 2016-03-16 | Be used for cold ware cooling system of synthetic ammonia enterprise decarbonization feed gas refrigerated ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620201838.1U CN205425907U (en) | 2016-03-16 | 2016-03-16 | Be used for cold ware cooling system of synthetic ammonia enterprise decarbonization feed gas refrigerated ammonia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205425907U true CN205425907U (en) | 2016-08-03 |
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ID=56547173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620201838.1U Withdrawn - After Issue CN205425907U (en) | 2016-03-16 | 2016-03-16 | Be used for cold ware cooling system of synthetic ammonia enterprise decarbonization feed gas refrigerated ammonia |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205425907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674775A (en) * | 2016-03-16 | 2016-06-15 | 福建邵化化工有限公司 | Ammonia cooler cooling system used for cooling decarburization raw material gas in ammonia synthesis enterprise |
-
2016
- 2016-03-16 CN CN201620201838.1U patent/CN205425907U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674775A (en) * | 2016-03-16 | 2016-06-15 | 福建邵化化工有限公司 | Ammonia cooler cooling system used for cooling decarburization raw material gas in ammonia synthesis enterprise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20171020 |
|
| AV01 | Patent right actively abandoned |