CN208653061U - A kind of cryogenic liquid gasification cold energy recycle device - Google Patents
A kind of cryogenic liquid gasification cold energy recycle device Download PDFInfo
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- CN208653061U CN208653061U CN201821248972.2U CN201821248972U CN208653061U CN 208653061 U CN208653061 U CN 208653061U CN 201821248972 U CN201821248972 U CN 201821248972U CN 208653061 U CN208653061 U CN 208653061U
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Abstract
A kind of cryogenic liquid gasification cold energy recycle device, including deep cooling liquid storage tank (1), nitrogen making machine or Nitrogen storage vessel (11) and closed nitrogen refrigerant gasifier, the closed nitrogen refrigerant gasifier includes insulation cladding (2) and the heat exchanger (3) for being set to the insulation cladding (2) inside, the heat exchanger (3) is conveyed to the secondary gasification system in downstream or is delivered directly to gas consumer after cryogenic liquid gasifies, the heat exchanger (3) discharges cold energy by nitrogen of the heat exchange with cryogenic liquid into the insulation cladding (2) in this process, the closed nitrogen refrigerant gasifier is a set of or by covering the combination constituted more, mountable Safety relief valve (4) and blowdown valve (5) on the insulation cladding (2), insulation cladding (2) output end connection step cold energy user (6) and / or liquid coolant system, nitrogen circuit automatically provide circulating pressure under control system control by circulating pump (10).
Description
Technical field
The utility model relates to technical field of heat exchange, in particular to a kind of cryogenic liquid gasification cold energy recycle dress
It sets.
Background technique
Cryogenic liquid such as LNG liquefied natural gas, liquid oxygen can discharge a large amount of cold energy in liquid nitrogen gasification, at present these
Cold energy substantially empties, and causes huge waste, and by taking liquefied natural gas LNG as an example, the cold energy value of one ton of -162 DEG C of LNG is about
240kWh can maintain 800 tons of -20 DEG C of freezers cooling capacity needed for one day, therefore, as can by cold energy recycle, economic valence
It is worth considerable.
The cold energy recovery technology of the prior art is mostly to realize that cold energy is recycled using liquid coolant, such as some are local now
Trial carries out cold energy recycle by heat exchanger with liquid coolant, i.e., absorbs gasification cold energy by coil pipe using liquid coolant and add
To utilize, liquid coolant is at high cost, and some liquid coolants are also toxic, and main is the limitation due to liquid coolant setting temperature,
It is partially recycled helpless lower than -50 DEG C to high-quality cold energy, it is recycled the high-quality cold energy in this part seldom, it is cold using liquid
Matchmaker is lower to the recovery utilization rate of gasification cold energy totality, and utilization rate is not higher than 30% under normal circumstances, moreover, this cold energy recycles
Device is also typically required for biggish amount of vaporization as support.In addition, in some special cold energy use occasions, such as controlled atmosphere is protected
Fresh library, cold energy utilization be by coil pipe transmit and discharge cold energy, so that fresh-keeping warehouse is cooled down by circulating fan, this device due to
Belong to indirect refrigeration, necessarily by the restriction of various factors, heat transfer efficiency can also have a greatly reduced quality, and modified atmosphere fresh-keeping storage also needs
A large amount of nitrogen are filled, a large amount of cold energy can be equally consumed.Currently, still cold energy can be taken into account without a kind of effective cold energy recovery technology
Recovery efficiency, cost recovery and the adaptability to harsh cold energy use condition.
Utility model content
To solve the above-mentioned problems, the utility model is started with from cold recoverable source, provide it is a kind of with nitrogen as
The cryogenic liquid gasification cold energy recycle device of refrigerant is being broken through to the limitation of cryogenic liquid amount of vaporization, is improving the cold energy rate of recovery
While, optimize cold energy use condition, and the step of cold energy is controlled by the flow of nitrogen in the quantity of heat-exchanging tube bundle and pipe
It utilizes, meets the needs of different user.
The purpose of this utility model is achieved through the following technical solutions.
A kind of cryogenic liquid gasification cold energy recycle device, including deep cooling liquid storage tank, nitrogen making machine or Nitrogen storage vessel
And closed nitrogen refrigerant gasifier, the closed nitrogen refrigerant gasifier include insulation cladding and are set to the insulation cladding
Internal heat exchanger, the insulation cladding connect the nitrogen making machine or Nitrogen storage vessel, are held by the nitrogen making machine or nitrogen storage
Device provides the nitrogen of circulation, heat exchange of the deep cooling liquid storage tank to the closed nitrogen refrigerant gasifier into the insulation cladding
Device provides cryogenic liquid, and the heat exchanger is conveyed to the secondary gasification system in downstream or directly transports after cryogenic liquid gasifies
To gas consumer, the heat exchanger is discharged by nitrogen of the heat exchange with cryogenic liquid into the insulation cladding in this process
Cold energy, the closed nitrogen refrigerant gasifier are a set of or by covering the combination constituted more.
Cryogenic liquid as described above gasifies cold energy recycle device, and the heat exchanger is heat-exchanging tube bundle group, and described
Insulation cladding corresponds, and the Nitrogen storage vessel is nitrogen cylinder group.
Cryogenic liquid as described above gasifies cold energy recycle device, is equipped with Safety relief valve on the insulation cladding；
And/or the insulation cladding bottom is equipped with blowdown valve.
Cryogenic liquid gasification cold energy recycle device as described above, the insulation cladding output end connect cold energy user
And/or liquid coolant system.
Cryogenic liquid gasification cold energy recycle device as described above, the insulation cladding output end first branch connection are cold
Energy user, second branch connect liquid coolant system.
Cryogenic liquid gasification cold energy recycle device as described above, the cold energy user are step cold energy user, according to
Secondary includes quick freezing repository, freezer and modified atmosphere fresh-keeping storage.
Cryogenic liquid gasification cold energy recycle device as described above, includes rubber grinding in the upstream of the quick freezing repository
System, and/or in the downstream of the modified atmosphere fresh-keeping storage include central air conditioner system, the rubber grinding system and/or the gas
It adjusts fresh-keeping warehouse directly to run using the refrigerating nitrogen for the required temperature that is corresponding to it and is after use vented this part nitrogen.
Cryogenic liquid as described above gasifies cold energy recycle device, the liquid coolant system include heat exchanger tube row and
Liquid coolant stores up cold trap, and the heat exchanger tube row is for carrying out heat exchange with refrigerating nitrogen and cold energy being offloaded to the liquid coolant
The liquid coolant in cold trap is stored up, the liquid coolant storage cold trap is connect with ice tank.
Cryogenic liquid as described above gasifies cold energy recycle device, the output end of the insulation cladding and described cold
The outlet end of energy user and/or liquid coolant system is provided with circulating pump, the circulating pump and control system communication connection, root
Circulating pressure is provided to gas circulation loop according to the instruction of the control system, the control system is recycled back to setting in gas
Pressure sensor and temperature sensor communication connection in road, the pressure provided according to the pressure sensor and temperature sensor
Control instruction is generated with temperature signal, is carried out automatically controlling with the operation to entire circulation loop.
Cryogenic liquid gasification cold energy recycle device as described above, the terminal of the circulation loop are provided with drying
Device.
The utility model has the beneficial effects that:
The utility model from refrigerant, start with by this cold recoverable source, with boiling point for -196 DEG C and physics, chemical property
Highly stable nitrogen has recycled cryogenic liquid gasification cold energy as refrigerant comprehensively, also, the utility model is due to using nitrogen
Be gas-cooled matchmaker, can not be limited by amount of vaporization, especially suitable for middle-size and small-size gasification installation, and will be unable to reach using liquid coolant
To the purpose of this utility model, and other gases such as inert gas, compared with nitrogen, cost will be difficult to bear；
The utility model further improves cold energy use rate to the cascade utilization of cold energy, in practical applications, cold insulation pipe
The temperature loss of every kilometer of road is 3-5 DEG C, this cascade utilization for allowing for cold energy has biggish space to the required distance of user,
Further, excellent by the direct application to refrigerating nitrogen in the gentle tune fresh-keeping warehouse link of the rubber grinding of cold energy cascade utilization
Changed cold energy use condition, further, closed nitrogen refrigerant gasifier can according to amount of vaporization number it is flexibly series-parallel
Multiple groups, are more advantageous to the cascade utilization of cold energy, and gasification result is also more preferable；
The utility model application avoid cryogenic liquid gasification cold energy waste, to gasification cold energy comprehensive utilization so that
Cold energy user saves the investment of refrigeration equipment, while having saved refrigeration electric power, greatly reduces the production cost of cold energy user,
As previously mentioned, the cold energy of one ton of LNG is worth about 240kWh, liquid nitrogen, liquid oxygen cold energy value be higher than LNG, according to kilowatt-hour
0.8 yuan, cold energy recycle rate 80% calculates, and the economic value of one ton of cryogenic liquid gasification cold energy is not less than 150.00 yuan,
Using this technology, its economic benefit is extremely considerable, in addition, due to using nitrogen as vaporizing refrigerant, it is therefore prevented that gasification is flammable
The contact of gas and oxygen in air plays a good role to the safety in production of cryogenic liquid gasification, moreover, because gasification
Technique be it is closed, completely cut off contact of the water vapor in air with gasifier, avoiding traditional empty bath gasification, to generate harl dirty
The problem of dye.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, the scheme of the application and advantage skill common for this field
Art personnel will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical new to this
The limitation of type.In the accompanying drawings:
A kind of cryogenic liquid gasification cold energy recycle device working principle diagram of Fig. 1 the utility model embodiment 1.
Component representated by each appended drawing reference in figure are as follows:
Deep cooling liquid storage tank 1, insulation cladding 2, heat exchanger (heat-exchanging tube bundle group) 3, Safety relief valve 4, blowdown valve 5, cold energy user
6, heat exchanger tube row 7, liquid coolant stores up cold trap 8, ice tank 9, circulating pump 10, nitrogen making machine or Nitrogen storage vessel 11, drier 12.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
Embodiment 1
Referring to Fig. 1, Fig. 1 is a kind of cryogenic liquid gasification cold energy recycle device of the utility model embodiment 1, the dress
It sets and circulation loop is constituted by cryogenic liquid gasification system, nitrogen circulating system and terminal user.Referring to Fig. 1, device is specifically included
Deep cooling liquid storage tank 1, nitrogen making machine or Nitrogen storage vessel 11 and closed nitrogen refrigerant gasifier, the closed nitrogen refrigerant
Gasifier includes insulation cladding 2 and the heat exchanger 3 (being specifically as follows heat-exchanging tube bundle group) that is set to inside the insulation cladding 2, described
Insulation cladding 2 connects the nitrogen making machine or Nitrogen storage vessel 11 (being specifically as follows nitrogen cylinder group), by the nitrogen making machine or nitrogen
Storage container 11 provides the nitrogen of circulation into the insulation cladding 2, and the deep cooling liquid storage tank 1 is to the closed nitrogen refrigerant gas
The heat exchanger 3 for changing device provides cryogenic liquid, and the heat exchanger 3 is conveyed to the secondary gasification system in downstream after cryogenic liquid gasifies
Or it is delivered directly to gas consumer, the heat exchanger 3 is by the heat exchange with cryogenic liquid to the heat preservation in this process
Nitrogen in shell 2 discharges cold energy.
Heat-exchanging tube bundle group heat exchanger 3 feed flow of the present embodiment from deep cooling liquid storage tank 1 to closed nitrogen refrigerant gasifier,
Closed insulation cladding 2 is mounted with outside heat-exchanging tube bundle group heat exchanger 3, and insulation cladding 2 is made by nitrogen making machine or nitrogen cylinder group and is run back
Full of the circulating nitrogen gas that can satisfy needs in road, it ensure that cryogenic liquid in the heat-exchanging tube bundle of closed nitrogen refrigerant gasifier
Release cold energy constantly gasifies in group heat exchanger 3 and the cold energy use demand of cold energy user, the gas after gasification pass through pipeline pressure regulation
Metering is conveyed to gas consumer.
As shown, being mounted with Safety relief valve 4 at the top of insulation cladding 2 for the gasification safety for guaranteeing cryogenic liquid, working as nitrogen
Gas operating pressure is more than design pressure or discovery heat-exchanging tube bundle group heat exchanger 3 when leaking, closing liquid feed valve and nitrogen into
Air valve opens Safety relief valve 4, empties the gas in insulation cladding 2, it is ensured that safety in production.
The utility model avoids fuel gas such as LNG in cryogenic liquid gasification due to employing nitrogen as refrigerant
Contact with air, so that LNG gasification is more safer than traditional empty bath gasification.
With continued reference to attached drawing, 2 bottom of insulation cladding is mounted with blowdown valve 5, when a small amount of condensed water and impurities accumulation to a fixed number
When amount or periodic inspection, opens blowdown valve 5 and be discharged into waste receptacle.
In the present embodiment, 2 output end of insulation cladding connection cold energy user 6 and liquid coolant system, specifically, the heat preservation
The 2 output end first branch of shell connects cold energy user 6, and second branch connects liquid coolant system, also, the cold energy user 6 is
Step cold energy user, as shown, can successively include quick freezing repository, freezer, modified atmosphere fresh-keeping storage according to step, further
, it may also include rubber grinding system in the upstream of the quick freezing repository, may also include center in the downstream of the modified atmosphere fresh-keeping storage
Air-conditioning system, the liquid coolant system include heat exchanger tube row 7 and liquid coolant storage cold trap 8, and the heat exchanger tube row 7 is used for and load
Cold nitrogen carries out heat exchange and cold energy is offloaded to the liquid coolant in the liquid coolant storage cold trap 8, the liquid coolant storage
Cold trap 8 is connect with ice tank 9.
Heat-exchanging tube bundle group according to the scheme of the present embodiment, through the closed nitrogen refrigerant gasifier in insulation shell
The refrigerating nitrogen that heat exchanger 3 and cryogenic liquid complete heat exchange can pass through heat exchange according to user to the different demands of cold energy cooling capacity
The quantity and the flow of refrigerating nitrogen is adjusted to meet user demand that pipe is arranged, while the requirement according to user to temperature is to refrigerating
Nitrogen carries out step use.For example, the refrigerating nitrogen lower than -80 DEG C is for rubber in the step design scheme of the utility model
Grinding uses, and the refrigerating nitrogen lower than -40 DEG C is arranged by heat exchanger tube and used for quick freezing repository, -40 DEG C--18 come out by quick freezing repository
DEG C refrigerating nitrogen by heat exchanger tube arrange for freezer use, by freezer come out -18 DEG C of refrigerating nitrogen can be such as Fig. 1
It is shown to continue for modified atmosphere fresh-keeping storage and central air-conditioning cascade utilization, cold trap 8 directly can also be stored up by liquid coolant through heat exchanger tube row 7
Cold energy is unloaded to liquid coolant, completes ice making in ice tank 9 by liquid coolant (the specific pipeline of the program is not shown in the figure).
Certainly, by liquid coolant system in this present embodiment have one it is selectable with the direct phase of 2 output end of insulation cladding
Second branch even, therefore, if gasification output is above -50 DEG C and is not less than -10 DEG C of refrigerating nitrogen, can also directly into
Enter heat exchanger tube row 7, releases cold energy in refrigerant storage cold trap 8, this can be used as the terminal of cold energy use, certainly, more preferably, by making ice
The refrigerating nitrogen that pond 9 comes out can also be arranged by heat exchanger tube and be supplied as the refrigerating nitrogen come out in aforementioned schemes by freezer
Fresh-keeping warehouse and next step (such as central air-conditioning) is adjusted to use (the specific pipeline of the program is not shown in the figure).
It is worth mentioning that rubber grinding it is gentle adjust fresh-keeping warehouse to refrigerating nitrogen in use, it is complete can directly by
Refrigerating nitrogen and 3-5 DEG C of refrigerating nitrogen not higher than -80 DEG C, which input, to be used, due to containing impurity after this part nitrogen use,
It can directly empty that (part of the rest part both in closed conduct still can discharge under circulation loop through pipeline or heat exchanger tube
One link), this is the Optimum utilization to this two parts refrigeration mechanism, and the optimization to entire cold energy recycling return circuit.
According to the working principle of the present apparatus, during nitrogen circulation, inevitably damaged due to emptying etc.
It loses, loss part is passed through by the pressure sensor being arranged in circulation loop to be automatically controlled as needed by nitrogen making machine or nitrogen
Bottle group supplement.Simultaneously as nitrogen is in the heat-exchanging tube bundle group heat exchanger 3 and deep cooling by the closed nitrogen refrigerant gasifier
Liquid constantly absorb heat when heat exchange, and operating pressure is downward trend, therefore reaches nitrogen pipeline operation by circulating pump 10
To balance, as shown, the outlet end of the output end of the insulation cladding 2 and the cold energy user 6 and liquid coolant system is equal
It is provided with circulating pump 10, the circulating pump 10 and control system communication connection, is followed according to the instruction of the control system to gas
Loop back path provides circulating pressure, the control system and the pressure sensor and temperature sensor that are arranged in gas circulation loop
Communication connection generates control instruction according to the pressure and temperature signal that the pressure sensor and temperature sensor provide, with right
The operation of entire circulation loop carries out automatically controlling.
In order to advanced optimize refrigerating nitrogen mass, the terminal of the circulation loop is provided with drier 12, completes step
The refrigerating nitrogen utilized returns to insulation cladding 2 through circulating pump 10, drier 12, completes nitrogen circulation.
Embodiment 2
A purpose according to the present utility model, device can should adapt to as far as possible middle-size and small-size gasification installation, should also energy
It is enough to adapt to multi-functional needs as far as possible, for this purpose, it is different from the closed nitrogen refrigerant gasifier of embodiment 1, the envelope in the present embodiment
Enclosed nitrogen refrigerant gasifier is that can use tandem compound by covering the combination constituted (not shown) more, can also be using parallel connection
Combination, in this way, can be more advantageous to the cascade utilization of cold energy according to how much flexible designs of amount of vaporization, gasification result is also more preferable,
Moreover, under the premise of guaranteeing cold energy recovering effect, the insulation cladding 2 of closed nitrogen refrigerant gasifier described in every suit and heat exchange
Tube bank group heat exchanger 3 can be designed smaller than existing size, keep the overall structure of device more compact.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with
Subject to the scope of protection of the claims.
Claims (10)
- The cold energy recycle device 1. a kind of cryogenic liquid gasifies, which is characterized in that including deep cooling liquid storage tank (1), nitrogen making machine or Nitrogen storage vessel (11) and closed nitrogen refrigerant gasifier, the closed nitrogen refrigerant gasifier includes insulation cladding (2) and it is set to the internal heat exchanger (3) of the insulation cladding (2), the insulation cladding (2) connects the nitrogen making machine or nitrogen storage Container (11), by providing the nitrogen of circulation, the depth in the nitrogen making machine or Nitrogen storage vessel (11) Xiang Suoshu insulation cladding (2) Cold liquid storage tank (1) provides cryogenic liquid to the heat exchanger (3) of the closed nitrogen refrigerant gasifier, and the heat exchanger (3) will The secondary gasification system in downstream is conveyed to after cryogenic liquid gasification or is delivered directly to gas consumer, it is described in this process to change Hot device (3) discharges cold energy by nitrogen of the heat exchange with cryogenic liquid into the insulation cladding (2), and the closed nitrogen is cold Matchmaker's gasifier is a set of or by covering the combination constituted more.
- The cold energy recycle device 2. a kind of cryogenic liquid according to claim 1 gasifies, which is characterized in that the heat exchange Device (3) is heat-exchanging tube bundle group, is corresponded with the insulation cladding (2), and the Nitrogen storage vessel is nitrogen cylinder group.
- The cold energy recycle device 3. a kind of cryogenic liquid according to claim 1 gasifies, which is characterized in that the heat preservation Safety relief valve (4) are installed on shell (2)；And/or insulation cladding (2) bottom is equipped with blowdown valve (5).
- The cold energy recycle device 4. a kind of cryogenic liquid according to claim 1 gasifies, which is characterized in that the heat preservation Shell (2) output end connects cold energy user (6) and/or liquid coolant system.
- The cold energy recycle device 5. a kind of cryogenic liquid according to claim 4 gasifies, which is characterized in that the heat preservation Shell (2) the output end first branch connects cold energy user (6), and second branch connects liquid coolant system.
- The cold energy recycle device 6. a kind of cryogenic liquid according to claim 5 gasifies, which is characterized in that the cold energy User (6) is step cold energy user, successively includes quick freezing repository, freezer and modified atmosphere fresh-keeping storage.
- The cold energy recycle device 7. a kind of cryogenic liquid according to claim 6 gasifies, which is characterized in that in the speed The upstream of frozen storehouse includes rubber grinding system, and/or in the downstream of the modified atmosphere fresh-keeping storage includes central air conditioner system, the rubber Rubber powder grinding system and/or the modified atmosphere fresh-keeping storage are directly using the refrigerating nitrogen operation for the required temperature that is corresponding to it and after use This part nitrogen is vented.
- The cold energy recycle device 8. a kind of cryogenic liquid according to claim 5 gasifies, which is characterized in that the liquid Coolant system includes heat exchanger tube row (7) and liquid coolant storage cold trap (8), and the heat exchanger tube row (7) is used to carry out with refrigerating nitrogen Cold energy is simultaneously offloaded to the liquid coolant in liquid coolant storage cold trap (8) by heat exchange, liquid coolant storage cold trap (8) with Ice tank (9) connection.
- The cold energy recycle device 9. a kind of cryogenic liquid according to claim 4 gasifies, which is characterized in that the heat preservation The outlet end of the output end of shell (2) and the cold energy user (6) and/or liquid coolant system is provided with circulating pump (10), The circulating pump (10) and control system communication connection provide circulation to gas circulation loop according to the instruction of the control system Pressure, the control system and the pressure sensor and temperature sensor communication connection that are arranged in gas circulation loop, according to The pressure and temperature signal that the pressure sensor and temperature sensor provide generates control instruction, to entire circulation loop Operation carries out automatically controlling.
- The cold energy recycle device 10. a kind of cryogenic liquid according to claim 9 gasifies, which is characterized in that described to follow The terminal of loop back path is provided with drier (12).
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| CN201821248972.2U CN208653061U (en) | 2018-08-03 | 2018-08-03 | A kind of cryogenic liquid gasification cold energy recycle device |
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| CN201821248972.2U CN208653061U (en) | 2018-08-03 | 2018-08-03 | A kind of cryogenic liquid gasification cold energy recycle device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759303A (en) * | 2018-08-03 | 2018-11-06 | 丁斌 | A kind of cryogenic liquid gasification cold energy recycle device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759303A (en) * | 2018-08-03 | 2018-11-06 | 丁斌 | A kind of cryogenic liquid gasification cold energy recycle device |
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