CN106082218A - Prepare the device of dry ice - Google Patents
Prepare the device of dry ice Download PDFInfo
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- CN106082218A CN106082218A CN201610635845.7A CN201610635845A CN106082218A CN 106082218 A CN106082218 A CN 106082218A CN 201610635845 A CN201610635845 A CN 201610635845A CN 106082218 A CN106082218 A CN 106082218A
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- dry ice
- lng
- ice maker
- gas
- device preparing
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Abstract
The invention discloses a kind of device preparing dry ice, including: CO2Store container；LNG vaporization system, it includes that LNG storage container and carburator, LNG storage container and carburator are connected by bypass conduit；And at least one dry ice maker, this dry ice maker and CO2Storage container is connected, and each dry ice maker accesses LNG by check valve series connection and stores between container and carburator, and LNG vaporization system directly provides cold energy for dry ice maker.This prepares the device of dry ice, is converted into the cold energy recycle during CNG and liquid CO by LNG2The characteristic of self, it is not necessary to using other auxiliary equipments, easy and simple to handle, input cost is low.
Description
Technical field
The present invention relates to dry ice preparation field, particularly to a kind of device preparing dry ice.
Background technology
In order to implement the air plan of preventing and remedying pollution, the beautiful rural construction of response country, country and local government launch respectively
Relevant regulations, administers coal-fired arcola comprehensively, accelerates to advance " coal changes gas " process, and subsidy policy is launched respectively in various places, encourages combustion
Coal burning boiler is transformed.Along with coal changes the further development of gas, (Liquefied Natural Gas is called for short to use liquefied natural gas
LNG) project of single-point direct-furnish gets more and more.The cold energy that LNG is raised to 0 DEG C of release from-162 DEG C of vaporizations is about 860KJ/kg.This
Portion of energy, as do not made full use of, is the waste of the energy.
On the other hand, dry ice cold-storage is more than 1.5 times of water-ice, without liquefaction after absorption heat, is directly sublimed into dioxy
Change carbon gas, and without any residual, avirulence, free from extraneous odour, have sterilization functions.Dry ice except can be used as rain making, fresh-keeping etc.,
" Dry ice cleaning " technology has been widely used in the industries such as food, health, industry, food and drink.Traditional dry ice production method is
Use dry-ice machine that liquid CO 2 is made dry ice, take away mainly by partial CO 2 liquid gasification separation process
Heat, the release heat solidification of remainder liquid forms flakes dry ice.Low-pressure process dry ice production process needs diffuse in a large number
Carbon dioxide, its production efficiency is relatively low, and the proportion of goods damageds are bigger.Although gas is recyclable, gas liquefaction can be increased again
Energy consumption.
The patent documentation of Publication No. CN101913604A discloses the dry ice production device utilizing cold energy of liquefied natural gas
And method, this invention utilizes propane and the natural two kinds of cold-producing mediums that liquefy, and uses multiple circulation by gaseous state CO2Make dry ice,
Need to consume propane and electric energy, have part CO simultaneously2Gas loss.The present invention does not use the third vehicle, and without disappearing
Consumption additional energy source.
The patent documentation of Publication No. CN104236252A discloses and utilizes cold energy to prepare liquid CO 2 and dry ice
Method and device, the target product of this invention is liquid CO2And dry ice.Using multiple stage circulation, technique is more complicated.Use compression
The auxiliary equipment such as machine, pump is more, and equipment input cost in advance and later stage operation energy consumption are the highest.
Due to the process that LNG vaporization is CNG (Compressed Natural Gas, compressed natural gas), typically use sky
Temperature carburator absorbs the heat of surrounding and is vaporized or uses heater to be vaporized, and causes wasting of cold energy.
On the other hand conventional dry ice maker, produces dry ice by the liquid throttling vaporization of elevated pressures, i.e. must be separated by atmospheric carbon dioxide
After, just can obtain dry ice, the amount of the carbon dioxide wherein lost is about two times of the dry ice amount obtained.
The information being disclosed in this background section is merely intended to increase the understanding of the general background to the present invention, and should not
When being considered to recognize or imply in any form this information structure prior art well known to persons skilled in the art.
Summary of the invention
It is an object of the invention to provide a kind of device preparing dry ice, the cold energy being converted into during CNG by LNG is returned
Receive and utilize and liquid CO2The characteristic of self, it is not necessary to using other auxiliary equipments, easy and simple to handle, input cost is low.
For achieving the above object, the invention provides a kind of device preparing dry ice, including: CO2Store container；LNG vapour
Change system, it includes that LNG storage container and carburator, LNG storage container and carburator are connected by bypass conduit；And at least
One dry ice maker, this dry ice maker and CO2Storage container is connected, and each dry ice maker is accessed by check valve series connection
LNG stores between container and carburator, and LNG vaporization system directly provides cold energy for dry ice maker.
Preferably, dry ice maker includes 3 to 5 be set up in parallel.
Preferably, dry ice maker includes: shell body；And inner barrel, it is used for containing CO2Liquid or gas are with dry
Ice, inner barrel forms chuck with shell body in being set in shell body, and chuck is for being filled with the LNG of cold conditions and then in inner barrel
CO2Cooling.
Preferably, the bottom of the side of shell body is provided with the LNG water influent pipeline connected with chuck, and LNG water influent pipeline controls
LNG enters in chuck, and the upper end of the opposite side of shell body is provided with the LNG drain pipe road connected with chuck, and LNG drain pipe road controls
LNG discharges dry ice maker.
Preferably, the upper end of inner barrel is provided with upper end cover, and the lower end of inner barrel is provided with dismountable bottom end cover, this bottom end cover
It is used for discharging the dry ice produced.
Preferably, from upper end cover, access the CO for controlling to enter inner barrel2Liquid or the CO of gas2Entrance pipe.
Preferably, the upper end of the side of shell body is provided with gas inlet pipe road, and this gas inlet pipe road is used for being passed through room temperature
Natural gas or noble gas.
Preferably, upper end cover is further connected with CO2Gas exhaust manifold and pressure measxurement pipeline.
Preferably, shell body is coated with heat-insulation layer.
Compared with prior art, there is advantages that mode in parallel is incorporated to LNG vaporization system
In, it is mainly used in reclaiming with the cold energy of gas project of LNG single-point direct-furnish, utilizes dry ice maker by carbon dioxide liquid or gas
Making dry ice, producing, dry ice carbon dioxide in process is lossless, thus obtains low cost dry ice.Technological process is simple, operation
Few, equipment needed thereby is few, it is not necessary to consume other energy, more energy efficient environmental protection.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the device preparing dry ice according to the present invention；
Fig. 2 is according to the structural representation of dry ice maker in the device preparing dry ice of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Scope of protecting is not limited by detailed description of the invention.
Explicitly indicating that unless otherwise other, otherwise in entire disclosure and claims, term " includes " or it becomes
Change and such as " comprising " or " including " etc. will be understood to comprise stated element or ingredient, and do not get rid of other yuan
Part or other ingredient.
As shown in Figure 1 to Figure 2, according to a kind of device preparing dry ice of the specific embodiment of the invention, including CO2Store
Container 20, LNG vaporization system and at least one dry ice maker 5, wherein LNG vaporization system includes that LNG stores container 1 and vapour
Changing device 10, LNG stores container 1 and carburator 10 connects (LNG bypass valve 14 place bypass conduit) by bypass conduit, and dry ice is raw
Grow up to be a useful person 5 and CO2Storing container 20 to connect, each dry ice maker 5 accesses LNG by check valve 4 series connection and stores container 1 and vaporization
Between device 10, LNG vaporization system directly provides cold energy for dry ice maker 5.
The present embodiment illustrates as a example by three dry ice makers, is dry ice maker 5, dry ice maker 3 respectively
With dry ice maker 18, certainly, in the present embodiment, dry ice maker is to utilize LNG cold energy by liquid or atmospheric carbon dioxide system
Becoming the container of dry ice, its quantity can be by one to multiple, and quantity is without specific restriction.Accordingly, this programme is provided with check valve
4, check valve 2 and check valve 19, CO2Respectively by check valve 4, check valve 2 and check valve 19 automatically into dry ice maker 5,
Dry ice maker 3 and dry ice maker 18, these three check valves control LNG respectively and enter different dry ice maker, can control many
Individual dry ice maker works simultaneously, it is possible to controls dry ice maker and works successively, is formed and produce continuously.And dry ice maker 5,
Dry ice maker 3 and dry ice maker 18 are respectively and CO2Storing container 20 to connect, also have, this device can also arrange three and do
Ice maker discharge control valve (7,11,13) controls the LNG outlet of dry ice maker respectively.It addition, this programme is provided with two
Individual carburator and two carburator inlet control valve, respectively carburator 10 and carburator 15, carburator inlet control valve 9 and vapour
Changing device inlet control valve 16, carburator inlet control valve 9 and carburator inlet control valve 16 control opening of two carburator respectively
Open or close.Carburator is that LNG vaporization becomes CNG gas the equipment heated up, and can be air temperature type, water-bath type and combustion type
Deng, 2 parallel connections can be used to be used alternatingly, it is also possible to 1 continuous use.
In such scheme, LNG stores container 1 and is used for storing liquefied natural gas, CO2Storing container can be carbon dioxide liquid
Or gaseous state gas cylinder, it is possible to for liquid or gaseous state storage tank, carbon dioxide enters maker by controlling valve and check valve.By LNG
Logical valve 14 is not when producing dry ice, and LNG can be directly entered carburator by this valve.Finally, the CNG through overflash is gone out by CNG
Mouth pipeline 17 enters terminal gas equipment after pressure regulation metering.
In such scheme, mode in parallel is incorporated in LNG vaporization system, and be mainly used in LNG single-point direct-furnish uses gas
The cold energy of project reclaims it can also be used to the cold energy of various types of gasification station project reclaims.Utilize dry ice maker by titanium dioxide
Carbon liquid or gas make dry ice.Be specially one or more dry ice makers are incorporated into LNG vaporization system, its upstream with
LNG stores container and is connected, and downstream is connected with carburator and pressure regulation metering system.LNG is by dry ice maker and stores between container
Valve controlling enter which dry ice maker, multiple dry ice makers are simultaneously operable, it is possible to control work successively by the time
Make.When dry ice maker does not works, LNG is bypassed to carburator, does not affect the work of normal carburetion system.
The device that it is emphasized that this programme is to directly utilize CO2Physical property, its critical point is 31.06 DEG C, molten
Point is for-56.57 DEG C, and boiling point is-78.45.Work as CO2When being in-56.57 DEG C, it is that three phase point i.e. gaseous state, liquid, solid-state coexist；
When temperature is in 31.06 DEG C～-56.57 DEG C, CO2Coexist for gaseous state, liquid；When temperature is in-56.57 DEG C～-78.45 DEG C
Time, CO2Coexist for gaseous state, solid-state.From the saturated vapour pressure of-57 DEG C～-80 DEG C drikolds.It is shown in Table 1:
Table 1: the saturated vapour pressure of drikold
Learning from upper table, the saturated vapour pressure of drikold reduces with the reduction of temperature, when temperature reaches-78 DEG C,
Saturated vapour pressure gauge pressure reduces further close to 0MPa, temperature, then be negative pressure.Utilize this physical property of dry ice, pass through LNG
Liquid or atmospheric carbon dioxide are fully cooled to-78 DEG C and less by cold energy so that it is become pure solid-state, the utilization rate of LNG cold energy
Higher, simple to operate, because of circulation and the refrigeration plant of undesirable gas, substantially without other energy consumptions, carbon dioxide liquid or gas
Loss little, reach the lossless purpose producing dry ice.
As a kind of preferred embodiment, dry ice maker includes 3 to 5 be set up in parallel.
As a kind of preferred embodiment, dry ice maker includes shell body 22 and inner barrel 23, and inner barrel 23 is used for containing
Dress CO2Liquid or gas and dry ice, inner barrel 23 forms chuck 30 with shell body 22 in being set in shell body 22, and chuck 30 is used for
It is filled with the LNG of cold conditions and then to the CO in inner barrel 232Cooling (seeing Fig. 2).
As a kind of preferred embodiment, the bottom of the side of shell body 22 is provided with the LNG water influent pipeline connected with chuck 30
21, LNG water influent pipeline 21 control LNG and enter in chuck 30, and the upper end of the opposite side of shell body 22 is provided with and connects with chuck 30
LNG drain pipe road 29, LNG drain pipe road 29 controls LNG and discharges dry ice maker.In this programme, LNG water influent pipeline 21 controls
LNG enters dry ice maker, and this LNG water influent pipeline 21 and LNG store container and use Flange joint, can set control valve, it is possible to
Not setting, LNG drain pipe road 29 controls LNG and passes in and out dry ice maker, and this LNG drain pipe road 29 and follow-up employing Flange joint can
If control valve, it is possible to do not set.
As a kind of preferred embodiment, the upper end of inner barrel 23 is provided with upper end cover 27, and the lower end of inner barrel 23 is provided with removable
The bottom end cover 32 unloaded, this bottom end cover 32 is used for discharging the dry ice produced.In this programme, upper end cover 27 and inner barrel 23 phase
Even, safeguarding for unit check, bottom end cover 32 is connected with inner barrel 23, detachably, is used for drawing off dry ice, and it can with shell body 22
Structure with bolts, it is possible to use quick-opening structure.
As a kind of preferred embodiment, from upper end cover 27, access the CO for controlling to enter inner barrel 232Liquid or gas
The CO of body2Entrance pipe 28.In this programme, CO2Entrance pipe is for controlling to enter the CO of inner barrel 232Liquid or gas, when adopting
Use CO2During liquid, this pipeline is discontinuity operation, i.e. inner barrel 23 is closed after being full of；When using CO2During gas, this pipeline need to be held
Continuous work.CO2Entrance pipe 28 comprises control valve and check valve.
As a kind of preferred embodiment, the upper end of the side of shell body 22 is provided with gas inlet pipe road 24, and this gas is passed through
Pipeline 24 is for being passed through natural gas or the noble gas of room temperature, and for the intensification of equipment, this gas inlet pipe road 24 comprises control
The valve that gas passes through.In this programme, in chuck 30, this gas inlet pipe road 24 available is passed through natural gas or the nitrogen of room temperature
Deng noble gas, heat inner core body wall, make dry ice separate with an inner core ancient piece of jade, round, flat and with a hole in its centre, to help to draw off dry ice smoothly.
As a kind of preferred embodiment, upper end cover 27 is further connected with CO2Gas exhaust manifold 25 and pressure measxurement pipeline 26.
CO2Gas exhaust manifold 25 is for CO2Gas discharges and to inner barrel 23 supercharging, this CO2Gas exhaust manifold 25 comprises control
The valve of gas turnover.Pressure measxurement pipeline 26 is for measuring the pressure in inner barrel 23, and pressure measxurement pipeline 26 comprises pressure
Table and pressure gauge valve, by pressure in observation dry ice maker, it is judged that dry ice generates level, when pressure reduces to 0, opens bottom end cover
32, dry ice dry ice is drawn off by action of gravity, it is also possible to CO2Gas exhaust manifold 25 is suitably pressurizeed, by dry ice pressure by pipeline
Go out.
As a kind of preferred embodiment, shell body 22 is coated with heat-insulation layer 31.Heat-insulation layer 31 is coated outside shell body 22, uses
In reducing loss of refrigeration capacity, insulation material can use glass fibre cotton, foamed glass, pearlife, aluminium foil to add all-glass paper etc., plants
Class is unrestricted.
In such scheme, entering maker draw off to dry ice from carbon dioxide is a cyclic process, can repeatedly circulate and make
With.Dry ice maker and upstream and downstream pipeline thereof, can make skid-mounted type, it is simple to mobile and replacing place to use.
To sum up, the device preparing dry ice of the present embodiment, mode in parallel is incorporated in LNG vaporization system, mainly uses
Reclaiming with the cold energy of gas project in LNG single-point direct-furnish, utilizes dry ice maker that carbon dioxide liquid or gas are made dry ice,
Producing, dry ice carbon dioxide in process is lossless, thus obtains low cost dry ice.Technological process is simple, and operation is few, needed for set
Standby few, it is not necessary to consume other energy, more energy efficient environmental protection.This device can intermittently operated, operating process does not interferes with air supply system
Normal work, simple to operate, it is simple to mobile.
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration.These describe
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can much change
And change.The purpose selected exemplary embodiment and describe is to explain that the certain principles of the present invention and reality thereof should
With so that those skilled in the art be capable of and utilize the present invention various different exemplary and
Various different selections and change.The scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (9)
1. the device preparing dry ice, it is characterised in that including:
CO2Store container；
LNG vaporization system, it includes that LNG stores container and carburator, described LNG storage container and described carburator by bypassing
Pipeline connects；And
At least one dry ice maker, this dry ice maker and described CO2Storage container is connected, and each described dry ice maker leads to
Crossing check valve series connection to access between described LNG storage container and described carburator, described LNG vaporization system is directly described dry ice
Maker provides cold energy.
The device preparing dry ice the most according to claim 1, it is characterised in that described dry ice maker includes being set up in parallel
3 to 5.
The device preparing dry ice the most according to claim 1, it is characterised in that described dry ice maker includes:
Shell body；And
Inner barrel, it is used for containing CO2Liquid or gas and dry ice, described inner barrel be set in described shell body with described outside
Housing forms chuck, and described chuck is for being filled with the LNG of cold conditions and then to the CO in described inner barrel2Cooling.
The device preparing dry ice the most according to claim 3, it is characterised in that the bottom of the side of described shell body is provided with
The LNG water influent pipeline connected with described chuck, described LNG water influent pipeline controls LNG and enters in described chuck, described shell body
The upper end of opposite side is provided with the LNG drain pipe road connected with described chuck, and described LNG drain pipe road controls LNG and discharges described dry
Ice maker.
The device preparing dry ice the most according to claim 4, it is characterised in that the upper end of described inner barrel is provided with upper end
Lid, the lower end of described inner barrel is provided with dismountable bottom end cover, and this bottom end cover is used for discharging the dry ice produced.
The device preparing dry ice the most according to claim 5, it is characterised in that access from described upper end cover and be used for controlling
Enter the CO of described inner barrel2Liquid or the CO of gas2Entrance pipe.
The device preparing dry ice the most according to claim 6, it is characterised in that the upper end of the side of described shell body is provided with
Gas inlet pipe road, this gas inlet pipe road is for being passed through natural gas or the noble gas of room temperature.
The device preparing dry ice the most according to claim 7, it is characterised in that be further connected with CO on described upper end cover2Gas is arranged
Go out pipeline and pressure measxurement pipeline.
The device preparing dry ice the most according to claim 8, it is characterised in that described shell body is coated with heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635845.7A CN106082218A (en) | 2016-08-05 | 2016-08-05 | Prepare the device of dry ice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635845.7A CN106082218A (en) | 2016-08-05 | 2016-08-05 | Prepare the device of dry ice |
Publications (1)
| Publication Number | Publication Date |
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| CN106082218A true CN106082218A (en) | 2016-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610635845.7A Pending CN106082218A (en) | 2016-08-05 | 2016-08-05 | Prepare the device of dry ice |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744958A (en) * | 2017-03-17 | 2017-05-31 | 长沙紫宸科技开发有限公司 | A kind of deep cooling plunger type dry-ice machine |
| CN109362722A (en) * | 2018-12-11 | 2019-02-22 | 徐州徐薯薯业科技有限公司 | A kind of agricultural fumigant preparation facilities containing dry ice ingredient |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913604A (en) * | 2010-07-20 | 2010-12-15 | 浙江大学 | Device and method for manufacturing dry ice by using liquefied natural gas cold energy |
| CN103288085A (en) * | 2013-04-16 | 2013-09-11 | 杨中维 | Dry ice generator using cold energy produced in vaporization of cryogenic liquid |
| CN104236252A (en) * | 2014-08-27 | 2014-12-24 | 华南理工大学 | Method and device for preparing liquid CO2 (carbon diode) by cold energy of LNG (liquefied natural gas) |
| CN205873912U (en) * | 2016-08-05 | 2017-01-11 | 廊坊市尚奇燃气技术有限责任公司 | Device of preparation dry ice |
-
2016
- 2016-08-05 CN CN201610635845.7A patent/CN106082218A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913604A (en) * | 2010-07-20 | 2010-12-15 | 浙江大学 | Device and method for manufacturing dry ice by using liquefied natural gas cold energy |
| CN103288085A (en) * | 2013-04-16 | 2013-09-11 | 杨中维 | Dry ice generator using cold energy produced in vaporization of cryogenic liquid |
| CN104236252A (en) * | 2014-08-27 | 2014-12-24 | 华南理工大学 | Method and device for preparing liquid CO2 (carbon diode) by cold energy of LNG (liquefied natural gas) |
| CN205873912U (en) * | 2016-08-05 | 2017-01-11 | 廊坊市尚奇燃气技术有限责任公司 | Device of preparation dry ice |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744958A (en) * | 2017-03-17 | 2017-05-31 | 长沙紫宸科技开发有限公司 | A kind of deep cooling plunger type dry-ice machine |
| CN106744958B (en) * | 2017-03-17 | 2023-09-19 | 长沙紫宸科技开发有限公司 | Cryogenic plunger type dry ice machine |
| CN109362722A (en) * | 2018-12-11 | 2019-02-22 | 徐州徐薯薯业科技有限公司 | A kind of agricultural fumigant preparation facilities containing dry ice ingredient |
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Application publication date: 20161109 |
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