KR101504644B1 - Equipment to Pressurize and Export Low Temperature Liquid Using Cascade Multiple Heating Boosters - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low temperature liquid pressurization and delivery apparatus using a multi-stage type heating pressurizer, and more particularly to a low temperature liquid pressurization apparatus using a multi- In the case of a low-pressure gas consumer, it is possible to easily pressurize without the need of a pump, to continuously supply the liquefied material, to provide stable supply of the liquefied material, and to control the flow rate and pressure of the discharged liquefied material. The present invention relates to a pressurization and delivery device for a low-temperature liquid-

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cascade multiple heating booster (Cascade Multiple Heating Boosters)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low temperature liquid pressurization and delivery apparatus using a multi-stage type heating pressurizer, and more particularly to a low temperature liquid pressurization apparatus using a multi- In the case of a low-pressure gas consumer, it is possible to easily pressurize without the need of a pump, to continuously supply the liquefied material, to provide stable supply of the liquefied material, and to control the flow rate and pressure of the discharged liquefied material. The present invention relates to a pressurization and delivery device for a low-temperature liquid-

To supply low temperature liquefied gases, such as liquefied natural gas, to high pressure gas applications, a low temperature liquefied pressurizing device is needed to pressurize or heat the liquid to a higher pressure and temperature liquid and gas.

A conventional general method is a method in which a low-temperature liquefied gas is vaporized in a vaporizing furnace through a low-pressure pump and a high-pressure pump to produce a high-pressure gas, and then supplied to a high-pressure gas application site.

However, in addition to the disadvantage that the two pumps must be connected in series, the evaporation gas is generated in the pipe due to the movement of the liquefied product from the large storage tank storing the low temperature liquefied product to the low pressure pump, Resulting in mechanical failure.

Further, in order to prevent this, it is necessary to provide a separate tank for separating the liquid and the gas, and it is not desirable to increase the number of expensive pumps having high failure rates.

As another conventional low-temperature liquid-liquid compression device, as shown in FIGS. 1 and 2, a low temperature liquid-compression device and a method for operating the low-temperature liquid-compression device have been proposed in Korean Patent Publication No. 10-2012-0133694.

The method shown in Fig. 1 is a method in a case where the required pressure is low, in which two or more small heaters are used, and the liquid refrigerant is supplied from a large-sized storage tank storing low- .

In the method as shown in FIG. 1, when the discharge pressure is increased, a large amount of steam is generated and the pressure of the large storage tank rises to a relatively high level, thereby increasing the design pressure of the large storage tank.

In addition, since the two heating pressers are operated alternately, when the pressurizer is alternated, a change in flow rate and a change in pressure of the liquefied product supplied to the evaporator may occur suddenly, which causes a problem in operation.

The method shown in Fig. 2 is a method in a case where the required pressure is high, and in the method using two conventional pumps, the low pressure pump is replaced with a heating type presser.

However, in the above-described method shown in FIG. 2, when the saturated liquid produced through the heating pressurizer is directly supplied to the high-pressure pump, flashing may occur and damage to the pump may occur. Is supercooled through the subcooler and then supplied to the high-pressure pump.

Since the supercooler is installed in the above method, not only the volume of the entire system is increased but also the installation cost is increased because a separate tank is required to be installed.

In addition, since two or more pressurizers are installed and operated alternately, there is a problem that when the pressurizer to be operated is changed, the flow rate and pressure of the liquefied product supplied to the evaporator may be greatly changed.

Patent: Korean Patent Publication No. 10-2012-0133694

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a continuous supply of low-pressure and high-pressure gas or liquefied gas, which not only stabilizes the supply of liquefied water, Temperature liquid-liquid pressurizing device using a multi-stage heating-type pressurizer which is easy to control the pressure.

In particular, it is an object of the present invention to provide a pressurizing device using a multi-stage heating pressurizer connected in series, which is easy to operate as compared with conventional parallel connection, and has a separate tank It is an object of the present invention to provide an economical low temperature liquid cargo pressurizing apparatus.

Also, the object of the present invention is to prevent the breakage of the high-pressure pump installed at the downstream of the N-th order pressure portion by placing the N-th order pressure portion at a high position and supercooling the liquid product due to the supercooling effect using the head pressure in the process of delivering the liquid product. Temperature liquid pressurizing device using a multi-stage type heating pressurizer capable of performing a low-temperature liquid pressurization.

The present invention relates to a pressurization and delivery device for pressurizing and supplying a low temperature liquid using a multi-stage heating pressurizer, comprising: a large-sized storage tank for storing a low-temperature liquid product; A low temperature liquid pressurization and delivery device using a multi-stage heating pressurizer that receives and pressurizes the liquid cargo from the large storage tank through the primary liquid supply pipe and sends it to the liquefied consumer through the rear end; The low temperature liquid pressurizing device using the multi-stage type heating pressurizer is supplied with liquid from the outside through the n-th order liquid supply pipe, pressurizes it again and discharges it to the outside through the N + 1th liquid supply pipe, Wherein the n-th order pressing portion includes an n-order pressing portion for pressing, and the N-th pressing portion includes an N-th pressing portion for pressing the N-th pressing portion (n = 1, ...., N, N is a natural number of 2 or more) And the liquefied material pressurized through the first-order liquid supply pipe is supplied to the rear end portion.

Particularly, the n-th order pressurizing portion includes an n-th order heat exchanger for supplying a portion of the liquefied material from the n-th pressurizer to generate an evaporative gas, and then introducing the n-th pressurizer to the n-

The low temperature liquid pressurization and delivery device using the multi-stage type heating pressurizer is formed in an n-order pressure control pipe connecting the large-capacity storage tank and the n-order pressurizer of the n-order pressurizing unit. The evaporation gas And an n-th order gas valve for discharging the n-th order pressurizer to the large-sized storage tank and controlling the pressure of the n-th order pressurizer.

The n-th order liquid supply pipe includes an n-th order liquid supply valve for controlling a flow rate of the liquid to be supplied to the n-th order pressure portion in the large-sized storage tank when n = 1.

The n-th order liquid supply pipe includes an n-th order liquid supply valve for controlling the flow rate of the liquid to be supplied from the n-1 th pressure portion to the n-th pressure portion when n is 2 or more.

The N + 1th liquid supply pipe includes an N + 1th liquid supply valve for controlling a flow rate of the pressurized liquid supplied to the rear end portion.

Further, the n-th order pressing portion is characterized in that the (n + 1) -th order is disposed below the pressing portion.

In addition, the Nth order pressing portion is disposed above the rear end portion.

Further, the n-order pressure section is formed by heating the n-order pressurizer and the light gas generated by heating the n-order pressurizer to the upper portion of the n-order pressurizer and causing the relatively heavy gas to circulate to the n- And a circulation pipe.

The n-order pressure section is formed by heating the n-order pressurizer outside the n-order pressurizer, and the light gas generated by heating the n-order pressurizer flows into the n-order pressurizer, and the relatively heavy gas is further circulated to the n- And piping.

Further, the n-th order pressing portion is characterized in that the n-th order heating portion is provided inside the n-pressing machine.

In addition, in the pressurizing method using the pressurizing and discharging device for cryogenic liquids, the low-temperature liquefied product in the large-sized storage tank is supplied to the cryogenic pressurizing device using the multi-stage type pressurizer through the primary liquid supply pipe A liquefied gas compression step for pressurizing the liquefied natural gas using an n-th order pressurizing unit connected in series in a low temperature liquid pressurizing apparatus using the multi-stage heating pressurizer, and a cryogenic liquefying pressurizing apparatus using the multi- Stage liquid pressurizing device using the multi-stage heating pressurizer and the N < th > order liquid supply pipe to the rear end portion of the low temperature liquid pressurizing device using the multi- And delivering the liquefied product to the liquefied product consuming step.

In the liquefied product supply step, the primary gas valve formed in the primary pressure control pipe connecting the large-capacity storage tank and the primary pressurizing unit of the primary pressurizing unit is opened, so that the large- The primary liquid supply valve formed in the primary liquid supply pipe is opened, and the low-temperature liquefied product is supplied to the primary pressurizer with a difference in head pressure.

The liquid pressurization step may include a primary gas valve formed in the primary pressure control pipe connecting the large-capacity storage tank and the primary pressurizing unit of the primary pressurizing unit, and a primary liquid supply valve formed in the primary liquid supply pipe, And pressurizes the liquefied material while evaporating the liquefied material through the primary heating of the primary pressurizing portion.

The liquid pressurizing step may include an n-th order gas valve, an n-1 th pressurizer, and an n-th order pressurizer formed in an n-th order pressure control pipe connecting n-th order pressurizer of the n-th order pressurization unit, the n-th order liquid supply valve formed in the n-th order liquid supply pipe connecting the n-th order pressurizer is closed, and then the n-th order pressure is applied while evaporating the liquid product through the n-th order heating of the pressure portion.

When the pressure of the n-th compressor reaches a predetermined value or more, the n-th valve is opened to discharge the gas in the n-th compressor to the large-capacity storage tank.

The n-th order liquid pressurizing device may further include a n-th order pressurizing device for pressurizing the n-th liquid when the n-th order pressurizing device is opened, And the cargo is supplied.

Further, in the liquid discharge step, the N + 1th liquid supply valve formed in the N + 1 liquid supply pipe connecting the N-th pressurizer and the rear end portion of the N-th pressure application portion is opened, And the cargo is supplied to the rear end portion through the N + 1th liquid supply pipe.

Further, in the step of delivering the liquefied product, the supercooled liquefied product is supplied to the liquefied product consumer via the rear end portion.

The low temperature liquid pressurization and delivery device using the multi-stage type heating pressurizer according to the present invention includes a low temperature liquid pressurization device using a multi-stage heating pressurizer connected in series, and is capable of continuously supplying low pressure and high pressure gas or liquefied material, Not only the supply of liquefied water is stable, but also the flow rate and pressure of the discharged liquefied product are easily controlled.

Particularly, the low temperature liquid pressurizing and delivering apparatus using the multi-stage heating pressurizer according to the present invention is equipped with a pressurizing apparatus using a multi-stage heating pressurizer connected in series, which is easier to operate than conventional parallel connection, There is no additional tank besides the n-th pressing unit using the heating pressurizer, which is economical advantage.

Further, in the low temperature liquid pressurization and delivery apparatus using the multi-stage type heating pressurizer according to the present invention, the N-th order pressurization portion is placed at a high position, and the liquid product is supercooled due to the supercooling effect using the head pressure in the process of delivering the liquid product, The N-th order is advantageous in that the evaporation gas in the gas phase is prevented from flowing into the high-pressure pump installed at the rear end of the pressure portion, thereby preventing damage to the pump.

In addition, the low-temperature liquefied gas compressor using the multi-stage heating pressurizer according to the present invention has an advantage that it can be applied not only to a high-pressure gas engine but also to a low-pressure gas engine.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a low-temperature liquefied pressurizing and delivering apparatus using a conventional pressurizer when the required pressure is low; FIG.
Fig. 2 is a schematic view of a low-temperature liquefied pressurizing and delivering apparatus using a conventional pressurizer when the required pressure is high; Fig.
3 is a schematic view of a low-temperature liquid-solid pressurizing and dispensing apparatus using a multi-stage heating pressurizer according to the present invention when the required pressure is low.
FIG. 4 is a schematic view of a low-temperature liquid-liquid pressurizing and dispensing apparatus using a multi-stage heating pressurizer according to the present invention when the required pressure is high; FIG.
5 is a schematic view showing an embodiment of a low temperature liquid pressurization and delivery apparatus using a multi-stage type heating pressurizer according to the present invention when the required pressure is high
FIG. 6 is a schematic view showing an n-th order pressing portion of a low-temperature liquefied pressurizing and delivering apparatus using a multi-stage heating pressurizer according to the present invention.
FIG. 7 is a schematic view showing Embodiment 1 of an n-th order pressing portion of a low-temperature liquid-liquid pressurization and delivery apparatus using a multi-stage heating pressurizer according to the present invention.
8 is a schematic view showing Embodiment 2 of the n-th order pressing portion of the low temperature liquid pressurization and delivery apparatus using the multi-stage heating pressurizer according to the present invention.
Fig. 9 is a schematic view showing Embodiment 3 of the n-th order pressing portion of the low temperature liquid pressurization and delivery device using the multi-stage heating pressurizer according to the present invention. Fig.
10 is a view schematically showing a method of operating a pressurization and delivery device for a low-temperature liquidus using a multi-stage heating pressurizer according to the present invention.

Hereinafter, an apparatus and method for operating a low-temperature liquid sucker using the multi-stage type heating press according to the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional or dictionary sense, and the inventor should appropriately define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and concept of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

Fig. 1 is a schematic view of a low-temperature liquefied pressurizing and delivering apparatus using a conventional pressurizing apparatus when the required pressure is low, and Fig. 2 is a schematic view showing a low-temperature liquefying pressurizing and delivering apparatus using a conventional pressurizing apparatus, FIG. 3 is a schematic view of a low-temperature liquid-supply pressurizing and dispensing apparatus using a multi-stage heating pressurizer according to the present invention when the required pressure is low. FIG. 4 is a schematic view Fig. 5 schematically shows an embodiment of a low-temperature liquid-liquid pressurizing and delivering device using a multi-stage heating pressurizer according to the present invention when the required pressure is high. Fig. FIG. 6 is a view showing a low-temperature liquefaction product using a multi-stage type heating pressurizer according to the present invention. 7 is a schematic view showing Embodiment 1 of the n-th order pressing portion of the low temperature liquid pressurization and delivery device using the multi-stage type heating pressurizer according to the present invention, and Fig. 8 is a schematic view showing Embodiment 2 of the n-th order pressing portion of the low temperature liquid pressurization and delivery device using the multi-stage heating pressurizer according to the present invention, and Fig. 9 is a cross- 10 is a view schematically showing a method of pressurizing a low-temperature liquefied product using the multi-stage type heating pressurizer according to the present invention and a method of operating the delivery device of the device. to be.

3 to 5, the low-temperature liquid compression device 200 using the multi-stage heating pressurizer of the present invention is a device in which the high-temperature liquid- 13 to the rear end portion 300. In this case,

In other words, the low-temperature liquid compression device 200 using the multi-stage heating pressurizer may be configured such that the low-temperature liquid refrigerant stored in the large-sized storage tank 100 is supplied through the primary liquid supply pipe 13, (N + 1) th liquid supply pipe 33. The n-th order liquid supply pipe 33 is connected to the n-th order liquid supply pipe 53, 50 are connected in series.

In this case, n = 1, ... , N and N are natural numbers of 2 or more, and can form various numbers of the n-th order pressing portion 50 selected according to the pressurizing environment and the operation.

The primary pressurizer 11 of the primary pressurizing unit 10 of the low temperature liquid pressurizing apparatus 200 using the multi-stage heating pressurizer is connected to the primary liquid supply pipe 13 from the large- And the primary pressurizing portion 10 is disposed below the large-sized storage tank 100.

Further, the n-th order pressing portion 50 is disposed below the (n + 1) -th pressing portion.

In other words, the primary pressure section 10 is disposed below the large-sized storage tank 100 and disposed on the upper part as the degree of n becomes larger, so that the n-th order, which is connected in series, The pressing portion 20 is formed at the uppermost position.

The rear end portion 300 is supplied with liquid refrigerant pressurized by the Nth order pressure portion 20 through the N + 1th liquid supply pipe 33 and is disposed below the Nth order pressure portion 20 .

At this time, the positions of the n-th order pressure portion 50 and the N-th order pressure portion 20 may be selectively arranged depending on the purpose of use, such as a low-pressure gas engine and a high-pressure gas engine.

As shown in Figs. 3 to 5, the n-order pressure applying unit 51 of the n-th order pressing unit 50 has a volume larger than that of the (n-1) th pressing unit when n is 2 or more.

As described above, since the n-order pressure applying device 51 is formed to be larger than the n-1 < th > pressure application device, it is advantageous in that it can intermittently supply the liquid product and dispense the liquid product safely.

In other words, it is intended to prevent the supply of liquefied goods from being stopped to the liquefied product consuming station 400, and it is required not only to increase the time for the operator to cope with the occurrence of an accident, but also to reduce the pressure and temperature of the low temperature liquefied product using the multi- The safety of the delivery device can be enhanced.

As shown in FIGS. 3 to 5, the n-th order pressure section 50 receives a part of the liquefied material from the n-th order pressure device 51 and heats it to produce an evaporation gas, And includes an n-th order heat exchanger 52 for pressurizing.

At this time, the n-order heat exchanger 52 can be heated by heat exchange with the internal or external heating medium, and not only high temperature fluid but also electricity can be used as the heating medium source.

The low-temperature liquid compression device 200 using the multi-stage heating pressurizer may further include an n-th order pressure control pipe (not shown) for connecting the large-sized storage tank 100 and the n-order pressure device 51 of the n- 55).

The n-th order pressure control pipe 55 is connected to the n-th order gas valve 51 for discharging the evaporated gas of the n-th order pressurizer 51 to the large-sized storage tank 100, (56).

The n-th order liquid supply pipe 53 of the low temperature liquid compression device 200 using the multi-stage heating presser is connected to an n-th order liquid supply valve (not shown) for controlling the flow rate of the liquid to be supplied to the n- 54).

The N + 1-th liquid supply pipe 33, which supplies the liquefied material pressurized from the N-th order pressure portion 20 to the rear end portion 300 formed at the uppermost portion of the n-th order pressure portion 50, And an N + primary liquid supply valve 34 for controlling the flow rate of the pressurized liquefied water.

The rear end 300 includes a high pressure pump 310 and an evaporator 320. When the required pressure is low as shown in FIG. 3, only the evaporator 320 except for the high pressure pump 310 is disposed 4 to 5, the high pressure pump 310 and the evaporator 320 are disposed when the required pressure is high.

In other words, the low-temperature liquid-compression device using the multi-stage heating press according to the present invention has an advantage that it can be applied not only to a high-pressure gas engine but also to a low-pressure gas engine.

As shown in FIG. 6, the n-th order pressurizing unit 50 is configured such that the liquid cargo loaded on the n-order pressurizer 51 flows along the pipe and is heated by the n-th order hot air 52 mounted on the outside of the pipe do.

At this time, the generated steam flows upward through the pipe to pressurize the liquefied product in the n-order pressurizer (51).

< Example 1 of the n-th order pressing portion 50 >

7, the n-th order pressure unit 50 includes an upper circulation pipe 1 connected to the n-order pressure unit 51 on the n-th order heat exchanger 52. The n-

In other words, a gas having a relatively low boiling point generated by heating in the piping flows into the upper portion of the n-th pressurizer 51, and a gas having a composition with a relatively high boiling point is introduced into the n-th pressurizer 51 by the upper circulation pipe 1 And is then circulated to the car presser 51.

The n-th order pressure application unit 50 of the first embodiment prevents the gas having a relatively high boiling point from accumulating in the piping because the liquid refrigerant of the pipe in which the external heat is installed is continuously circulated, The load can be reduced and sufficient vaporization gas can be obtained.

< Example 2 of the n-th order pressing portion 50 >

As shown in Fig. 8, the n-th order pressing section 50 is a part of the n-th order pressing section 51, 52 at the lower portion of the pipe through which the liquid is introduced.

In other words, a gas having a relatively low boiling point generated by heating in the piping flows into the upper portion of the n-th pressurizer 51, and a gas having a relatively high boiling point is introduced into the n-th pressurizer 51 by the lower circulation pipe 2 And is then circulated to the car presser 51.

The n-th order pressure section 50 of the second embodiment has an advantage that a gas having a relatively high boiling point flows into the lower portion of the pipe and flows into the n-th pressure stage 51, so that heavy gas circulates.

< Embodiment 3 of n &lt; th &gt;

As shown in FIG. 9, the n-th order pressing portion 52 is formed in the n-th order pressing portion 51 of the n-th order pressing portion 50.

The n-th order heat exchanger (52) is mounted on a pipe installed in the center of the n-th order pressurizer (51).

The liquefied product flowing into the pipe in the n-order pressurizer 51 is heated by the n-order heat exchanger 52, and the vaporized gas having a relatively low boiling point is introduced into the n-order pressurizer 51 And the gas having a relatively high boiling point is discharged to the lower portion of the n-th pressurizer 51 to assist circulation of the heated liquefied product.

The n-th order pressure section 50 of the third embodiment prevents accumulation of gas having a relatively high boiling point because the liquid refrigerant in the n-th pressure machine 51 is continuously circulated, It is possible to stably maintain the performance of the apparatus.

At this time, a hole through which the gas having a relatively high boiling point generated in the n-th order heat exchanger 52 installed in the n-th order pressurizer 51 is discharged can be selectively used. Even if there is no hole, As the gas of relatively high composition boils and falls out of the hole, the liquid is continuously circulated.

As shown in FIG. 10, a method of operating the low-temperature liquid compression device 200 using the multi-stage type heating press machine is characterized in that low-temperature liquefied material in the large-sized storage tank 100 is placed under the large- Stage liquid pressurizing device 200 using the multi-stage heating pressurizer disposed in the first liquid supply pipe 13, and a liquid supply step (S10) of supplying the liquid to the low- Stage pressurizing step S20 for pressurizing the pressurized gas in the N-th order by using the n-th order pressurizing units 50 connected in series in the pressurizing apparatus 200, and a step of pressurizing the liquid discharged from the low temperature liquid pressurizing apparatus 200 using the multi- The liquid refrigerant is discharged through the N + 1 liquid tank supply pipe 33 to the rear end 300 disposed below the N-th pressure applying unit 20 of the low temperature liquid condenser pressurizing apparatus 200 using the multi- (S30) of discharging liquid, And a liquefied material supplying step (S40) for supplying the liquefied material to the liquefied material consuming place (400) via the gas rear end (300).

As shown in FIGS. 3 to 5 and 10, the liquefied material supply step (S10) may include supplying the liquefied material to the first storage tank 100 and the first storage tank 100, The primary gas valve 16 formed in the primary pressure control pipe 15 connecting the car pressurizer 11 is opened.

The first reservoir tank 100 and the primary pressurizer 11 are equilibrated in pressure while the primary gas valve 16 is opened and after the pressure equilibrium is established, The primary liquid supply valve 14 is opened.

The low-temperature liquefied product stored in the large-sized storage tank 100, which is formed above the primary pressurizing portion 10 while the primary liquid supply valve 14 is opened, Is supplied to the primary presser (11).

3 to 5, the liquefied product pressurization step S20 may include a step of pressurizing the liquefied natural gas from the first storage tank 100 and the primary pressurizer 11 of the primary pressurizing unit 10, The primary gas valve 16 formed in the control pipe 15 and the primary liquid valve 16 formed in the primary liquid supply pipe 13 to control the flow rate of the low temperature liquefied material supplied from the large- The liquid supply valve 14 is closed.

After the primary gas valve 16 and the primary liquid supply valve 14 are closed as described above, the primary charge 12 of the primary pressure section 10 is activated to pressurize the liquefied gas while evaporating it .

As described above, the liquefied material pressurized by the primary pressurizing unit 10 is supplied to the secondary pressurizing unit. When n is two or more, the supplied liquefied material is supplied to the large-capacity storage tank 100 and the n- the n-th order gas valve 56 formed in the n-th order pressure control pipe 55 connecting the n-th order pressurizer 51 and the n-th order gas valve 56 connected to the n-th order pressurizer and the n- The n-th order liquid supply valve 54, which is formed in the liquid supply pipe 53 and controls the flow rate of the liquefied product supplied from the n-1 &lt; th &gt;

After the n-th order gas valve 56 and the n-th order liquid supply valve 54 are closed as described above, the n-th order heat exchanger 52 of the n-th order pressure section 50 is operated to evaporate the liquid product, do.

The n-th order liquid supply valve 54 is opened when n is 2 or more, and the n-th order liquid supply valve 54 is opened by the pressure difference between the n- The liquid cargo is supplied to the car presser 51.

That is, the primary pressurizing unit 10 receives low-temperature liquefied material by the difference in head-water pressure from the large-sized storage tank 100 formed above the primary pressurizing unit 10, whereas when n is 2 or more, The n-th order pressure section 50 is formed above the n-1 th pressure section so that the n-th order pressure section 50 is supplied with the liquefied material by the pressure difference from the n-1 th pressure section that has been pressurized.

As shown in FIGS. 3 to 5 and 10, when the pressure of the n-order pressure applied by the n-th pressure application device 51 reaches a predetermined value or higher, the n-type pressure application device 51 is opened To the large-sized storage tank (100) to control the pressure of the n-order pressurizer (51).

That is, the n-order pressure applying device 51 intermittently receives the liquefied fluid from the n-1 &lt; th &gt; pressure applying device and regulates the pressure of the n-order pressure applying device 51, Or the pressure is lowered by using the n-th gas valve 56.

In other words, the n-1st order pressurizer is used for charging the n-th order pressurizer 51 with the liquefied product.

As shown in FIGS. 3 to 5 and 10, the liquefied discharge (S30) is performed when the N-th order liquid supply valve 24 of the N-th order liquid supply pipe 23 is opened, The N-th order pressurizer 21 of the pressure portion 20 and the N-th order pressurizer 21 of the pressure portion 20 are again pressurized and then discharged, And the N + 1th liquid supply valve 34 formed in the pipe 33 is opened and supplied to the rear end 300.

The N-numbered pressure section 20 is formed at the uppermost one of the other n-numbered pressure sections 50 and can supply the supercooled liquid fraction to the rear end part 300 formed at the lower part by the difference in head pressure.

In other words, the liquefied product leaving the N-th order pressurizer 21 of the N-th order pressurization portion 20 is discharged at a pressure that is the sum of the head pressure of the N-th order pressurizer 21, The supercooling effect occurs because the pressure rises by the head pressure.

That is, even if the supercooled liquefied product flows into a device such as the high-pressure pump 310 of the rear end 300, gas is not generated, and mechanical damage of the pump due to flashing phenomenon can be prevented.

Finally, the liquefied material supplying step S40 supplies the supercooled liquefied material to the liquefied material consuming place 400 through the rear end 300 including the high-pressure pump 310 and the evaporator 320. [

The low temperature liquid pressurizing and dispensing apparatus 200 using the multi-stage heating pressurizer can prevent the problems occurring in parallel connection by connecting the n-order pressurizing units 50 in series.

In other words, there is an advantage that a sudden change in the flow rate and pressure of the liquefied water caused by the change of the working pressurizer can be prevented.

100: Large storage tank
200: Cryogenic pressurization and delivery device using multi-stage type pressurizer
10: primary pressing
11: primary pressurizer 12: primary heat
13: primary liquid supply pipe 14: primary liquid supply valve
15: Primary pressure control piping 16: Primary gas valve
20: N differential pressure
21: N-car press 22: N-car heat
23: N-th liquid supply pipe 24: N-th order liquid supply valve
25: N-th order pressure control pipe 26: N-th order gas valve
50:
51: n-th pusher 52: n th
53: n-th liquid supply pipe 54: n-th liquid supply valve
55: n-th order pressure control pipe 56: n-th order gas valve
33: N + primary liquid supply pipe
34: N + primary liquid supply valve
300: rear end
310: high pressure pump 320: evaporator
400: Liquefied consumer
1: upper circulation piping
2: Lower circulation piping

Claims (19)

A large-sized storage tank (100) storing low temperature liquefied material;
The liquid is discharged from the large storage tank 100 through the primary liquid supply pipe 13 and then sent to the liquefied product consuming station 400 through the rear end 300. The low temperature A liquid supply pressurization and delivery device (200);
The low-temperature liquid compression device 200 using the multi-stage type heating pressurizer receives supply of the liquid product from the outside through the n-th liquid supply pipe 53, repressurizes it, and supplies it to the outside through the (N + (N = 1, ...., N, N are natural numbers of 2 or more) connected in series with each other,
The n-th order pressing portion 50 includes an n-th pressing portion 51 for pressing,
And the N-th order pressurizing unit 20 feeds the pressurized liquefied material through the (N + 1) -th liquid supply pipe 33 to the rear end 300. The pressurizing / Device (200). The method according to claim 1,
The n-th order pressing section 50
And an n th order heat exchanger (52) for supplying a part of the liquefied material from the n th order pressurizer (51) to heat the n th order pressurizer (51) (200). The method according to claim 1,
The low temperature liquid pressurization and delivery device 200 using the multi-stage type heating pressurizer
And the n-th order pressure regulating pipe 55 connecting the large-sized storage tank 100 and the n-th pressure regulator 51 of the n-th pressure regulator 50, And a n-th valve (56) for discharging the n-th pressurizer (51) to the large-sized storage tank (100) and controlling the pressure of the n-th pressurizer (51) ). The method according to claim 1,
When the n-th order liquid supply pipe 53 is n = 1,
And an n-th order liquid supply valve (54) for controlling the flow rate of the liquefied material supplied from the large-capacity storage tank (100) to the n-th order compression unit (50). In the delivery device 200, The method according to claim 1,
The n-th order liquid supply pipe 53, when n is 2 or more,
and a n-th order liquid supply valve (54) for controlling the flow rate of the liquefied material supplied from the (n-1) th pressure application portion to the n-th order pressure application portion (50) (200). The method according to claim 1,
The N &lt; + &gt; primary liquid supply pipe (33)
And an N + 1th liquid supply valve (34) for controlling the flow rate of the pressurized liquefied material supplied to the rear end (300). The low temperature liquid pressurization and delivery device (200) . The method according to claim 1,
The n-th order pressing section 50
and the (n + 1) th order pressure is lower than the pressure portion. The method according to claim 1,
The N-th order urging portion 20
(200) by using the multi-stage heating pressurizer. 3. The method of claim 2,
The n-th order pressing section 50
The light gas generated by heating in the n-th order heat exchanger 52 formed outside the n-th order pressurizer 51 flows into the upper portion of the n-th order pressurizer 51. The relatively heavy gas is further introduced into the n- And the upper circulation pipe (1) circulating the pressurized liquid to the circulation pipe (1). 3. The method of claim 2,
The n-th order pressing section 50
The light gas generated by heating in the n-th stage heater 52 formed outside the n-th stage pressure device 51 flows into the upper portion of the n-th pressure device 51, and the relatively heavy gas is introduced into the n-th pressure device 51 And a lower circulation pipe (2) for causing the circulation pipe to circulate through the lower circulation piping (2). 3. The method of claim 2,
The n-th order pressing section 50
And the n-th order heat exchanger (52) is provided inside the n-th order presser (51). 11. A method of pressurizing a low temperature liquid by using the multi-stage heating pressurizer according to any one of claims 1 to 11,
(S10) for supplying the low-temperature liquefied liquid in the large-sized storage tank (100) to the low-temperature liquid compression device (200) using the multi-stage type heating presser through the primary liquid supply pipe (13); Wow
A liquefied pressurization step (S20) of pressurizing the liquefied natural gas using an n-th order pressurizing unit (50) connected in series in the low temperature liquid pressurizing apparatus (200) using the multi-stage type pressurizer
The liquefied matter discharged from the low temperature liquid pressurizing and pressurizing device 200 using the multi-stage heating pressurizer is introduced into the low temperature liquid pressurizing device 200 using the multi- A liquid discharge step S30 for discharging the liquid through the N + 1th liquid supply pipe 33 to the end 300;
And a liquefied material supply step (S40) of supplying the liquefied material to the liquefied material consuming station (400) via the rear end (300). 13. The method of claim 12,
The liquid supply step (S10)
The primary gas valve 16 formed in the primary pressure control pipe 15 connecting the large-capacity storage tank 100 and the primary pressurizer 11 of the primary pressure section 10 is opened to open the large- The primary liquid supply valve 14 formed in the primary liquid supply pipe 13 is opened after the primary pressurizer 11 and the primary pressurizer 11 have undergone pressure equilibrium so that the primary pressurizer 11 Wherein the low-temperature liquefied product is supplied to the low-temperature liquefied pressurizing device. 13. The method of claim 12,
The liquefied pressurization step (S20)
A primary gas valve 16 formed in a primary pressure control pipe 15 connecting the large-sized storage tank 100 and the primary pressurizer 11 of the primary pressure section 10 and a primary gas valve 16 formed in the primary liquid supply pipe Wherein the primary pressurizing unit pressurizes the liquefied material while evaporating the liquefied material through the primary heat exchanger (12) of the primary pressurizing unit (10) after the primary liquid supply valve (14) A method for pressurizing a liquid at low temperatures. 13. The method of claim 12,
In the liquefied pressurization step S20, when n is 2 or more,
The n-th order gas valve 56 and the n-th order pressurizer 56 formed in the n-th order pressure control pipe 55 connecting the large-sized storage tank 100 and the n-th order pressurizer 51 of the n- After the n-th order liquid supply valve 54 formed in the n-th order liquid supply pipe 53 connecting the n-th order pressurizer 51 is closed, the n-th order liquid supply valve 54 is closed through the n- Wherein the pressurization is performed while evaporating the liquefied product. 16. The method of claim 15,
And the n-th order pressurizer 51 opens the n-th order gas valve 56 to discharge the gas in the n-th order pressurizer 51 to the large-sized storage tank 100 when the pressure of the n- (Method for Pressurizing Liquefied Cryogenic Liquid Using a Hot Pressing Machine). 13. The method of claim 12,
In the liquefied pressurization step S20, when n is 2 or more,
the n-th order liquid supply valve 54 is opened and liquid is supplied from the n-1 th -step pusher to the n-th pusher 51 by a pressure difference between the n- Pressure liquid pressurization method using a multi-stage type heating pressurizer. 13. The method of claim 12,
The liquefied discharge step (S30)
The N + 1-th liquid supply valve 34 formed in the N + 1-th liquid supply pipe 33 connecting the N-th order pressurizer 21 and the rear end 300 of the N-th order pressure- And the liquid refrigerant supercooled by the difference in head pressure is supplied to the rear end portion (300) through the N + 1th liquid supply pipe (33). 13. The method of claim 12,
The droplet dispensing step (S40)
And the supercooled liquefied material is supplied to the liquefied material consuming station (400) via the rear end (300).

Images