CN2674255Y - System for discharging low-temp. propane from refrigeration storage tank into normal temp. land storage tank - Google Patents
System for discharging low-temp. propane from refrigeration storage tank into normal temp. land storage tank Download PDFInfo
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- CN2674255Y CN2674255Y CN 200420028281 CN200420028281U CN2674255Y CN 2674255 Y CN2674255 Y CN 2674255Y CN 200420028281 CN200420028281 CN 200420028281 CN 200420028281 U CN200420028281 U CN 200420028281U CN 2674255 Y CN2674255 Y CN 2674255Y
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- distributor
- cold
- heat exchanger
- propane
- storage tank
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Abstract
The utility model provides a system for discharging low-temp. Propane from refrigeration storage tank into normal temp. Land storage tank, comprising two-level heat exchangers arranged between a refrigeration groove ship and a normal temp. High pressure storage tank. The inlet and the outlet of the first level heat exchanger pipe are connected with two distributors and a set of cold storing tanks, together composing a circuit A. The same set of cold storing tanks and the other two distributors are connected with the inlet and the outlet of a refrigeration pool, together composing a circuit B. The inlet and the outlet of the secondary level heat exchanger pipe are connected with a set of water tanks and two distributors, together composing a circuit c. The six distributors are connected with a general control device which controls the operation of the three circuits. The system can substitute the heating technology for heating the low-temp. Propane to the normal temp. Propane. In the condition of zero heat power consumption, the temperature of the propane discharged into the normal temp. Land storage tank can rise. The cold quantity of the propane can be collected for making other refrigeration products. The additional earning can be achieved.
Description
Technical field
The utility model belongs to the invention that low temperature propane in the groove ship refrigerated transport jar is discharged into the apparatus system of land normal temperature storage tank, the propane that is discharged into land normal temperature storage tank is heated up, can collect the cold of low temperature propane again and create extra benefit.
Background technique
The technology of unloading a ship that existing groove Ship Transportation propane refrigeration is discharged into the land storage tank has two kinds substantially: first kind is that a position of the pipeline between freezing tank ship and land normal temperature high voltage storage tank is provided with heater, and the propane refrigeration that the groove ship is drawn off flows into the normal temperature high voltage storage tank stores on land after heating; Second kind is that the propane refrigeration that earlier the groove ship is drawn off directly flows into land low-temperature atmosphere-pressure storage tank stores through pipeline, heats when then being exported by the low-temperature atmosphere-pressure storage tank to do it again and uses.The defective of first kind of technology is not only to have lost the heat energy of heating but also wasted the contained cold of propane; Second kind of technology had both comprised the deficiency of first kind of technology, had also increased consumption in order to keep the temperature energy needed of low-temperature atmosphere-pressure storage tank.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the purpose of this utility model provides the apparatus system that low-temperature atmosphere-pressure propane in a kind of refrigerated transport jar is discharged into land normal temperature high voltage storage tank, it can satisfy groove Ship Transportation propane refrigeration and be discharged into the technical specifications that land normal temperature high voltage storage tank is unloaded a ship, and can save whole heat energy of heating propane again; Simultaneously can also collect the contained cold of propane, be used for manufacturing a product ice or other products obtain extra huge benefits.
For achieving the above object, scheme of the present utility model provides the apparatus system that low temperature propane in a kind of freezing tank Ship Transportation jar is discharged into land normal temperature storage tank, this system includes the freezing tank Ship Transportation jar of transfer of cryogenic normal pressure propane and the normal temperature high voltage storage tank of land, wherein: this system also includes the two-stage heat exchanger that is provided with between described freezing tank Ship Transportation jar and normal temperature high voltage storage tank, the propane pipeline of freezing tank Ship Transportation jar links to each other with the shell side of first-class heat exchanger and the shell side of secondary heat exchanger successively, and the outlet conduit of secondary heat exchanger shell side links to each other with the normal temperature high voltage storage tank of land; Meanwhile, in the import of described first-class heat exchanger tube side, outlet, connecting two distributors and one group of cold-storage jar, the common A loop of forming is both this group cold-storage jar and is connected with import, the outlet in refrigeration pond again with two other distributor, forms the B loop jointly; In the import of described secondary heat exchanger tube side, outlet, connect one group of water pot and two distributors, forming the C loop jointly; Six distributors are connected with master controller, the operation in three loops of General controller centralized control.
Described A loop is that the outlet by the first-class heat exchanger tube side links to each other with the import of first-class heat exchanger tube side with distributor, cold-storage jar group, distributor successively, its effect is the circulation by refrigerant in the loop, the cold of the propane of the first-class heat exchanger shell side of flowing through is carried accumulated cold-storage jar group; Described B loop be by the refrigeration pond outlet link to each other with the import in refrigeration pond with distributor, cold-storage jar group, distributor successively, its effect is the circulation by refrigerant in the loop, the cold of refrigerant is transported to the refrigeration pond, water in the product reservoir or aqueous mixture are processed into ice or other frozen products; Described C loop is that the outlet by the secondary heat exchanger tube side links to each other with distributor, water pot group, distributor and the import of secondary heat exchanger tube side successively, its effect is the circulation by water in the loop, the water pot group is accumulated in the conveying of the cold of the propane of the secondary heat exchanger shell side of flowing through, cold water in the water pot group is delivered in the product reservoir, does the usefulness of ice or other moisture frozen products.
Described cold-storage jar group is arranged in parallel by a plurality of cold-storage jars.
Described water pot group is arranged in parallel by a plurality of water pots.
Two distributors in master controller may command A loop make any cold-storage jar realize single or a combination in parallel arbitrarily, with the tube side formation work loop of first-class heat exchanger; Two distributors in master controller may command B loop make any cold-storage jar realize single or a combination in parallel arbitrarily, form the work loop with the refrigeration pond; Two distributors in master controller may command C loop make any water pot realize single or a combination in parallel arbitrarily, with the tube side formation work loop of secondary heat exchanger.
Effect of the present utility model is to adopt this technology to replace " heating makes low temperature propane rise to the heating process of normal temperature ", under the situation that equipment investment slightly increases than the former, can create extra huge income.This income is made up of two-part: the one, get that cold technology can be saved whole heating expenses of heating process consumption and the business term cost of production that reduces project; The 2nd, get cold manufacture ice or other frozen products that cold technology can be utilized low temperature propane, obtain extra huge benefits.Because be the cold ice making that utilizes propane, so ice tank need not equipped the refrigeration compressor set of common industrial ice making production line, thereby can save the investment and the power consumption expense thereof of this part equipment, can obtain extra income so be called.
Description of drawings
Fig. 1 is the theory structure schematic representation of the utility model apparatus system.
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the apparatus system that low temperature propane in the refrigerated transport jar of the present utility model is discharged into land normal temperature storage tank.
As shown in Figure 1, to be discharged into the apparatus system of land normal temperature storage tank be that low-temperature atmosphere-pressure propane is discharged into land normal temperature high voltage storage tank from groove ship refrigerated transport jar to low temperature propane in the refrigerated transport jar of the present utility model, this apparatus system can either make the propane that is discharged into land normal temperature storage tank heat up under the condition of no heat power consumption, can collect the cold of low temperature propane again and create extra benefit.Its structure comprises five parts: first portion, the flowage structure that the propane of being made up of the normal temperature high voltage storage tank 4 of the shell side of the shell side of the freezing tank Ship Transportation jar 1 of transfer of cryogenic normal pressure propane, first-class heat exchanger 2, secondary heat exchanger 3 and land is unloaded a ship and heated up; Second portion, connect the A loop that the tube side import of distributor 12, cold-storage jar group 13, distributor 15 and first-class heat exchanger 2 is formed successively by the outlet of the tube side of first-class heat exchanger 2, this is the circulation by refrigerant in the loop, the cold of the propane of first-class heat exchanger 2 shell sides of flowing through is carried, accumulated the flowage structure of cold-storage jar group; Third part, outlet by refrigeration pond 9 connects the B loop that distributor 16, cold-storage jar group 13, distributor 11 and refrigeration pond import are formed successively, this is the circulation by refrigerant in the loop, the cold of cold-storage jar group 13 is transported to refrigeration pond 9, the water in the product reservoir 10 or aqueous mixture is processed into the flowage structure of ice or other frozen products; The 4th part, connect the C loop that the tube side import of distributor 8, water pot group 7, distributor 5 and secondary heat exchanger 3 is formed successively by the outlet of the tube side of secondary heat exchanger 3, this is the circulation by water in the loop, the cold of the propane of secondary heat exchanger 3 shell sides of flowing through carried accumulate the water pot group, the cold water in the water pot group waits to do the flowage structure of the usefulness of ice or other moisture frozen products.The 5th part, the distributor 5 and the distributor 8 that are connected the distributor 11 in the distributor 12 in A loop and distributor 15, B loop and distributor 16, C loop by General controller 17 are respectively formed, and General controller 17 is the manufacturing processs that adopt general electrical-controller to come centralized control A, B, three loops of C.
Cold-storage jar group 13 is arranged in parallel by a plurality of cold-storage jars 14; Water pot group 7 is arranged in parallel by a plurality of water pots 6.
Low temperature propane is discharged into the apparatus system of land normal temperature storage tank in the refrigerated transport jar of the present utility model, the propane that is discharged into land normal temperature storage tank is heated up, and the process that the cold that can collect low temperature propane is again created extra benefit is achieved in that
-44 ℃ to-30 ℃ low temperature propane flows through the shell side of first-class heat exchanger 2 and the shell side of secondary heat exchanger 3 successively from groove ship refrigerated transport jar 1, through this twice heat exchange, temperature reaches the normal temperature high voltage storage tank that enters land after-15 ℃ to D ℃ (D ℃ is meant the ambient temperature of unloading a ship at that time).
After connecting power supply, the distributor 12,15 in General controller 17 control A loops, make the cold-storage jar arbitrarily 14 of the tube side of first-class heat exchanger 2 and cold-storage jar group 13 constitute sealing, for fluid refrigerant circuit loop, the cold at the propane of first-class heat exchanger 2 absorptions is stored in the cold-storage jar 14 successively.
Equally, the distributor 11 and the distributor 16 in General controller 17 control B loops, make the cold-storage jar arbitrarily 14 of refrigeration pond 9 and cold-storage jar group 13 constitute sealing, for fluid refrigerant circuit loop, simultaneously product reservoir 10 is immersed in the refrigerant in refrigeration pond, load onto cold water and other raw materials in the product reservoir from water pot 6, refrigerant manufactures the material in the product reservoir other frozen products of ice or aqueous mixture in refrigeration pond 9 circular flow mistakes.
Equally, the distributor 5 and the distributor 8 in General controller 17 control C loops, make the water pot arbitrarily 6 of the tube side of secondary heat exchanger 3 and water pot group 7 constitute sealing, water supply circuit loop, the water that absorbs the cold of propane at secondary heat exchanger 3 is stored in the water pot 6 successively, stays the usefulness of the frozen product of doing product ice or other aqueous mixtures.
But cold-storage jar 14 combination in any in the A loop cold-storage jar group 13, switch successively, form fluid refrigerant circuit loop with the tube side of first-class heat exchanger 2, but and water pot 6 combination in any in the C loop water pot group 7, switch successively, form the loop of water cycle with the tube side of secondary heat exchanger 3, purpose is to realize approximate heat transfer process stably, to guarantee in the whole time period of unloading a ship,-44 ℃ to-30 ℃ the low temperature propane that groove ship refrigerated transport jar 1 is unloaded reaches the normal temperature high voltage storage tank 4 that enters land after-15 ℃ to D ℃ (D ℃ is meant the ambient temperature of unloading a ship at that time) all the time.
But cold-storage jar 14 combination in any in the B loop cold-storage jar group 13, switching successively form fluid refrigerant circuit loops with refrigeration pond 9, and purpose is rationally to utilize cold, the material in the product reservoir is manufactured other frozen products of ice or aqueous mixture.
The extra returns estimation of said apparatus system, if is basic parameter with the yearly amount of work, production scale 30 number indicating a ship's order of departure per year, every ship unloads 25000 tons in propane, unsnatched in 36 hours, suppose to collect-42.1 ℃ of colds, the propane boiling point to-15 ℃ of intervals :-42.1 ℃, propane specific heat: 2.22kJ/kg. ℃ (42.1 ℃), 2.26kJ/kg. ℃ (28.55 ℃, this temperature is-42.1 ℃ to-15 ℃ a mean value), 2.34kJ/kg. ℃ (0 ℃), the result is as follows in estimation:
The ice making income calculation:
The releasable cold of propane per ton is: 2.26 * (15+42.1) * 1000=61246kJ/t
Reality is ice-making capacity per hour:
Unit time can obtain cold from propane: 61246 * 25000/36=42531944.44kJ/h
Produce the required cold of ice per ton and get 20000kJ, then per hour actual ice-making capacity is:
42531944.44/20000 * η=1081.3t/h (η is an efficient, gets η=0.5)
Annual sales revenue:
Known: the cost of ice per ton is 50 yuans, presses interest rate 15% and calculates, and then the sales price of ice per ton is: 50 * (1+0.15)=57.5 yuan
The income from sales of every ship propane is: 57.5 * 1081.3 * 36=223.8291 * 10
4Yuan
Then annual sales revenue is: 223.8291 * 30=6714.8730 * 10
4Yuan
Year profit on sales:
Known: the cold expense accounts for 96% of ice cost per unit, and other fees account for 4%, because the cold of this case is waste utilization, so the effective unit cost of ice equals other fees, other fees are:
50 * 0.04=2 yuan
Then a year profit on sales is: 67148730-1081.3 * 36 * 2=6707.0876 * 10
4The heat up expense of power consumption of yuan heating process:
The total amount of heat that propane technology heats up to be needed is: 2.26 * (0+42.1) * 1000 * 25000 * 30=7135950 * 10
4KJ/y
Adopt the water-bath heating of combustion fluid gasification, every standard cubic meter liquid gas calorific value is: 113022kJ/Nm
3,
Need liquefaction tolerance to be: 7135950 * 10
4/ 113022=631377Nm
3
Get combustion efficiency η
1=0.85, heat exchange efficiency η
2=0.5, then reality needs liquid gas be:
631377/0.85×0.5＝1485593Nm
3
Amounting to liquid lng is: 2.43 * 1485593=3609.991 * 10
3Kg
Liquid gas price per ton is 3500 yuan, and the expense of heating process intensification power consumption is:
3500 * 3610=1263.5000 * 10
4RMB
The annual extra returns of creating of this apparatus system:
Ice making year, profit on sales was: 6707.0876 * 10
4Yuan
The expense of saving the heating power consumption year is: 1263.5000 * 10
4RMB
The annual extra returns of creating of this device are:
6707.0876 * 10
4+ 1263.5000 * 10
4=7970.5876 * 10
4RMB
In a word, the apparatus system that low temperature propane is discharged into land normal temperature storage tank in the refrigerated transport jar of the present invention can be created extra huge benefits, 1 year meter: 7970.5876 * 10
4RMB.
Claims (4)
1, low temperature propane is discharged into the apparatus system of land normal temperature storage tank in a kind of refrigerated transport jar, this system includes the freezing tank Ship Transportation jar of transfer of cryogenic normal pressure propane and the normal temperature high voltage storage tank of land, it is characterized in that: this system also includes the two-stage heat exchanger (2 that is provided with between described freezing tank Ship Transportation jar (1) and land normal temperature high voltage storage tank (4), 3) and master controller (17), the shell side of freezing tank Ship Transportation jar (1) and first-class heat exchanger (2), the shell side of secondary heat exchanger (3), normal temperature high voltage storage tank (4) connects successively, import at described first-class heat exchanger (2) tube side, connecting cold-storage jar group (13) in the outlet, distributor (12), distributor (15), the A loop that cold is obtained in the circulation of common composition refrigerant, while cold-storage jar group (13), distributor (11) and distributor (16) again with the refrigeration pond (9) import, outlet connects, and forms the B loop of refrigerant circulation released cold quantity jointly; In the import of described secondary heat exchanger tube side, outlet, connect water pot group (7), distributor (5) and distributor (8), forming the C loop that water cycle is obtained cold jointly; General controller (17) links to each other with distributor (5), distributor (8), distributor (11), distributor (12), distributor (15) and distributor (16) respectively, the operation operation of centralized control loop A, loop B and loop C.
2, apparatus system according to claim 1 is characterized in that: described A loop is that the outlet by first-class heat exchanger (2) tube side links to each other with distributor (12), cold-storage jar group (13), distributor (16) and the import of first-class heat exchanger (2) tube side successively; Described B loop is that the outlet by refrigeration pond (9) links to each other with the import in distributor (16), cold-storage jar group (13), distributor (11) and the pond (9) of freezing successively; Described C loop is that the outlet by secondary heat exchanger (3) tube side links to each other with distributor (8), water pot group (7), distributor (5) and the import of secondary heat exchanger (3) tube side successively.
3, apparatus system according to claim 1 is characterized in that: described cold-storage jar group (13) is arranged in parallel by a plurality of cold-storage jars (14).
4, apparatus system according to claim 1 is characterized in that: described water pot group (7) is arranged in parallel by a plurality of water pots (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028281 CN2674255Y (en) | 2004-01-17 | 2004-01-17 | System for discharging low-temp. propane from refrigeration storage tank into normal temp. land storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028281 CN2674255Y (en) | 2004-01-17 | 2004-01-17 | System for discharging low-temp. propane from refrigeration storage tank into normal temp. land storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674255Y true CN2674255Y (en) | 2005-01-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420028281 Expired - Fee Related CN2674255Y (en) | 2004-01-17 | 2004-01-17 | System for discharging low-temp. propane from refrigeration storage tank into normal temp. land storage tank |
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| Country | Link |
|---|---|
| CN (1) | CN2674255Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449198C (en) * | 2006-12-25 | 2009-01-07 | 浙江大学 | Lossless system for storing liquid hydrogen based on low temperature refrigerator |
| CN103867884A (en) * | 2014-03-24 | 2014-06-18 | 中国石油集团工程设计有限责任公司 | Ship loading system and method of LPG (Liquefied Petroleum Gas)-based on single point mooring |
| CN109553058A (en) * | 2019-01-08 | 2019-04-02 | 天津辰力工程设计有限公司 | A kind of technique low temperature propane unloading and heated up |
-
2004
- 2004-01-17 CN CN 200420028281 patent/CN2674255Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449198C (en) * | 2006-12-25 | 2009-01-07 | 浙江大学 | Lossless system for storing liquid hydrogen based on low temperature refrigerator |
| CN103867884A (en) * | 2014-03-24 | 2014-06-18 | 中国石油集团工程设计有限责任公司 | Ship loading system and method of LPG (Liquefied Petroleum Gas)-based on single point mooring |
| CN109553058A (en) * | 2019-01-08 | 2019-04-02 | 天津辰力工程设计有限公司 | A kind of technique low temperature propane unloading and heated up |
| CN109553058B (en) * | 2019-01-08 | 2020-08-04 | 天津辰力工程设计有限公司 | Low-temperature propane ship unloading and heating process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050126 Termination date: 20130117 |