CN116788441B - A device for storing carbon dioxide in the ocean after ship carbon capture - Google Patents

Abstract

The invention relates to the field of energy conservation and emission reduction, and discloses a carbon dioxide marine storage device after ship carbon capture, which consists of a carbon dioxide throwing bullet and a throwing device, wherein the throwing device is used for throwing the carbon dioxide throwing bullet from a ship to the sea according to a preset angle and a preset speed. The invention provides a novel method and a system for sealing and storing carbon dioxide after capturing, which are low in cost and low in engineering difficulty, aiming at the problem of sealing and storing the carbon dioxide in the ocean at the present stage by adopting a dry ice throwing principle.

Description

Carbon dioxide ocean sealing device after ship carbon capture

Technical Field

The invention relates to the field of energy conservation and emission reduction, in particular to a marine carbon dioxide sealing device after carbon capture of a ship.

Background

In front of the climate change challenge, the shipping industry considers that the aim of reducing emission of the established IMO greenhouse gases is difficult to achieve by only relying on various existing means and measures including the use of clean energy. Even if the growth speed of global trade is estimated conservatively, the emission reduction target in 2050 is realized, and the carbon emission is not obviously reduced or eliminated based on the current application situation of the fossil fuel technology, so the target of zero carbon emission at the end of the century can be realized only by introducing zero carbon energy and developing the development of the ship carbon capture technology. At present, the carbon trapping and sealing technology is already a mature technical means for carbon dioxide emission reduction of a land power station, and brings technical possibility for realizing large-scale carbon dioxide emission reduction of shipping as soon as possible. Due to the specificity of ships, the subsequent treatment scheme of captured carbon dioxide is also the "last kilometer" of success or failure of CCS technology. According to the related research, the carbon dioxide ocean sealing scheme is a feasible subsequent treatment scheme, and due to the particularity of ocean and submarine environments, the state of the carbon dioxide on the seabed is relatively stable, and under the condition of no larger geological movement, the carbon dioxide can be stably sealed on the seabed below 500 m, and the effect can even reach 1000 years.

However, carbon dioxide is currently used in the petroleum exploitation industry in ocean sequestration, liquid carbon dioxide is injected into deep sea for displacement of oil in a low-temperature high-pressure or supercritical state through a drilling platform pipeline, and carbon dioxide is stably present in a liquid form in the ocean species to form carbon paste. For how to seal and store the carbon dioxide captured on the ship into the sea, because of the particularity of the ship, the pipeline cannot be used for injecting the liquid carbon dioxide into the sea for sealing and storing, and because the carbon dioxide generation amount of the ship is huge, about 13 tons/hour (taking 16000TEU container ship as an example), if the carbon dioxide is stored on the ship in a liquid state, the occupied ship cargo carrying volume is large, so that great economic loss is brought to the shipper, and the enthusiasm of the shipper for carbon emission reduction by using the carbon capture technology can be reduced. Therefore, if the captured carbon dioxide is made into solid dry ice and thrown into the sea, the cargo volume is not occupied, the sea area below 500 meters of the ocean is wide, the carbon dioxide can be thrown at any time, and the problem of carbon dioxide removal after the capture of the carbon dioxide of the ship is greatly solved.

Therefore, how to throw carbon dioxide into the ocean for sequestration is one of the keys that can be realized for capturing the carbon in the ocean by the ship, the throwing must ensure that the carbon dioxide has a certain shell hardness and the shape with minimum fluid resistance, the initial speed of entering the ocean, and the rapid sedimentation of the carbon dioxide is ensured to the greatest extent, so that the loss of the carbon dioxide in the sedimentation process is reduced, and the length must ensure that the carbon dioxide is completely buried into the seabed deeply, so as to ensure the sequestration effect without leakage.

Disclosure of Invention

The main object of the present invention is to solve the problems of the prior art. The invention provides a carbon dioxide marine sealing device after ship carbon capture, which is characterized by comprising a carbon dioxide throwing bullet and a throwing device, wherein the throwing device is used for throwing the carbon dioxide throwing bullet from a ship to the sea according to a preset angle and a preset speed.

The carbon dioxide marine sealing device further comprises a head 2-piece armor, the head 2-piece armor is additionally arranged on the carbon dioxide throwing bullet, and the throwing device finishes the lifting, rotating and releasing operations of the carbon dioxide throwing bullet through the head 2-piece armor.

The carbon dioxide throwing bullet main body is in a tapered cylinder shape, and the head part is in a cone shape.

The carbon dioxide throwing bullet is composed of liquid carbon dioxide, solid dry ice and a shell from inside to outside, wherein 4 tail fins formed integrally are arranged at the tail of the shell, and a GPS module is packaged at the tail of the shell.

The 2-piece armor of the head is made of degradable plastic, has the thickness of 3 mm-5 mm and is fixed in a buckle mode.

The shell is made of PLA or PHA bio-based material, and the thickness is 2-3 mm.

The throwing device comprises a base, a vertical rod, a rocker arm, a rotating assembly, a lifting assembly and a manipulator clamp, wherein the base is fixed on a ship deck, one end of the vertical rod is fixed on the base, the other end of the vertical rod is connected with the rocker arm, one end of the rocker arm is provided with a rocker arm control module, the rocker arm control module is used for controlling the rocker arm to rotate in the horizontal direction, the other end of the rocker arm is provided with the manipulator clamp and a lifting module, the manipulator clamp is used for clamping the carbon dioxide throwing bullet, and the lifting module is used for lifting the carbon dioxide throwing bullet.

The throwing device further comprises a water depth measuring module, wherein the water depth measuring module is used for measuring the depth of the ocean where the ship is located, and when the measured depth reaches the preset depth, the throwing flow of the carbon dioxide throwing bullet is started.

The throwing device further comprises a control box, a ship speed sensor and a linear speed sensor, wherein the ship speed sensor is used for collecting the horizontal speed of the current ship, the linear speed sensor is used for measuring the linear speed of the end part of the rocker arm, a PLC (programmable logic controller) in the control box is used for collecting information of the ship speed sensor and the linear speed sensor, outputting analog quantity signals to control the rocker arm, enabling the linear speed of the end of the rocker arm to be consistent with the ship speed when the rocker arm is vertical to the navigation direction, and controlling the manipulator clamp to release carbon dioxide to throw the projectile.

The vertical rod and the rocker arm of the throwing device are made of 304L or 316L stainless steel.

Studies have shown that when dry ice is thrown into the sea to begin to settle, the dry ice surface quickly volatilizes. When the dry ice reaches a depth below the 500m thermocline, the external pressure may reach 50 atmospheres, at which time the sea water temperature is about 5 degrees celsius. In this environment, carbon dioxide cannot be converted to gaseous escape, while the surface layer of dry ice will be partially liquefied, but still denser than seawater, and thus will continue to sink until reaching the seafloor. The loss of carbon dioxide in the whole sedimentation process can be controlled within 2 percent, and the hydrated carbon dioxide formed on the surface layer of the dry ice in the sedimentation process can also reduce the loss of the process.

The invention provides a novel method and a system for sealing and storing carbon dioxide after capturing, which are low in cost and low in engineering difficulty, aiming at the problem of sealing and storing the carbon dioxide in the ocean at the present stage by adopting a dry ice throwing principle.

The carbon dioxide shell is a bio-based material, so that the extra carbon dioxide loss caused by the way of solid carbon dry ice in the traditional marine sealing is reduced, the marine environment is not influenced, the inside of the carbon dioxide shell is liquid, the outside of the carbon dioxide shell is a part of dry ice shell, the internal temperature is kept at-50 ℃, compared with the traditional integral dry ice, the energy consumption is reduced, the carbon dioxide casting shell is additionally provided with 2 pieces of buckle type armor for reinforcement at the head part, the casting shell is ensured to be penetrated into the seabed, the tail part of the bio-based shell is additionally provided with tail wings, the sea-entering posture is ensured to be vertical, and a GPS module is additionally arranged, so that the casting shell can be used for tracking and confirming casting;

The echo sounding instrument of the throwing device ensures that the throwing is performed when the water depth conditions are met, the rotating speed of a rocker arm is calculated according to the sea bottom depth and the ship speed by the throwing device, the horizontal speed is guaranteed to be free when the device enters the sea, the lifting assembly of the throwing device is provided with 2 groups of limit switches, the carbon dioxide throwing bullet is guaranteed to be lifted and clamped within 30 seconds, and the throwing device adopts an electromagnetic control manipulator to clamp and release.

Drawings

FIG. 1 is a schematic diagram of a carbon dioxide marine seal-up device mounted on a ship's end.

Fig. 2 is a schematic diagram of a carbon dioxide projectile.

Fig. 3 is a schematic structural view of the throwing device.

Fig. 4 is a schematic flow chart of a carbon dioxide marine sequestration and jettisoningdevice after carbon capture of a ship.

The reference numerals are as follows:

Carbon dioxide throwing bullet 1, throwing device 3, head 2 piece armor 2, ship deck 4, liquid carbon dioxide 11, solid dry ice 12, shell 13, GPS module 14, base 31, pole setting 32, rocking arm 37, rocking arm control module 36, lifting module 41, manipulator anchor 43, control box 33, water depth measuring module 34, linear velocity sensor 39.

Detailed Description

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.

In order to solve the above-mentioned technical problem of throwing, the invention provides a throwing device (figure 1) installed at a ship end, mainly comprising a carbon dioxide throwing bullet (figure 2), wherein the throwing device is provided with a plurality of throwing devices. Wherein the carbon dioxide feed and solidification chamber are located within the ship's hold and are not within the scope of this patent description. After solidification and forming, 2 pieces of buckle type armor at the head are additionally arranged on the carbon dioxide throwing bullet, and the throwing device is used for completing lifting, rotating and releasing operations. The throwing device comprises a base, a vertical rod, a rocker arm, a rotating assembly, a lifting assembly and a manipulator clamp, wherein the base is fixed on a ship deck, one end of the vertical rod is fixed on the base, the other end of the vertical rod is connected with the rocker arm, one end of the rocker arm is provided with a rocker arm control module, the rocker arm control module is used for controlling the rocker arm to rotate in the horizontal direction, the other end of the rocker arm is provided with the manipulator clamp and a lifting module, the manipulator clamp is used for clamping the carbon dioxide throwing bullet, and the lifting module is used for lifting the carbon dioxide throwing bullet.

The carbon dioxide is thrown into a bomb, and enters a curing chamber to be subjected to heat exchange to form an outer dry ice shell, wherein the thickness of the outer dry ice shell is not less than 2cm, the whole carbon dioxide is a spindle body, the head of the carbon dioxide is conical, the diameter of the widest part is 0.7 m, the main body is in a tapered cylinder shape, the diameter of the narrowest part is 0.2 m, and the total length is 2.5 m. The volume of the throwing bullet is about 0.5m3, the density is 1.15-1.25 g/cm ³ after the throwing bullet is manufactured, the single weight is 575-625 kg:

as a preferable implementation mode, the carbon dioxide throwing bullet is made of PLA and PHA bio-based materials at the outer layer, the thickness of the carbon dioxide throwing bullet is 2-3 mm, 4 tail wings are integrally formed at the tail part of the shell, the thickness of the tail wings is 10mm, the length of the tail wings is 600mm, and the carbon dioxide throwing bullet is used for stabilizing the posture of the throwing bullet after entering the sea. The tail part of the shell is packaged with a GPS module for recording the sealing position.

As a preferred implementation mode, the 2-piece armor of the head adopts degradable plastics with the thickness of 3 mm-5 mm and adopts a fastening type fixing mode;

As a preferred implementation mode, the vertical rod and the rocker arm of the throwing device are made of 304L or 316L stainless steel, and are resistant to low temperature and corrosion;

as a preferred embodiment, the throwing device further comprises a water depth measuring module, wherein the water depth measuring module is used for measuring the depth of the ocean where the ship is located, and when the measured depth reaches a preset depth, the throwing flow of the carbon dioxide throwing bullet is started.

As a preferred implementation mode, the throwing device further comprises a control box, a ship speed sensor and a linear speed sensor, wherein the ship speed sensor is used for collecting the horizontal speed of the current ship, the linear speed sensor is used for measuring the linear speed of the end part of the rocker arm, a PLC (programmable logic controller) in the control box is used for collecting the information of the ship speed sensor and the linear speed sensor, outputting analog quantity signals to control the rocker arm, enabling the linear speed of the end of the rocker arm to be consistent with the ship speed when the rocker arm is vertical to the sailing direction, and controlling the manipulator clamp to release carbon dioxide to throw the projectile.

As a preferred implementation mode, as shown in figure 4, the depth ranging probe adopts an echo detector, the casting process can be started only when the water depth is more than 500 meters, the ship speed sensor is arranged in a control box and used for collecting the horizontal speed of the current ship, the rocker arm end linear speed sensor is arranged at a release mechanical arm, the linear speed sensor is used for measuring 0-10m/s, the sensor feeds back a speed signal to a PLC (programmable logic controller) in the control box, the speed signal is compared with the current ship, an analog quantity signal is output to control a frequency converter to drive a motor to rotate, when the rocker arm is vertical to the navigation direction, the rocker arm end linear speed and the ship speed are basically consistent, the lifting assembly is composed of the motor and a winch assembly, and is provided with 2 groups of limit switches, in order to ensure that the carbon dioxide casting bullet finishes lifting and clamping within 30 seconds, the release mechanical arm is controlled by electromagnetism, after the carbon dioxide casting bullet is lifted to reach limit, the mechanical arm is manually clamped, the carbon dioxide casting bullet is simultaneously released automatically, the mechanical arm releases under electromagnetic control when the lifting hook rotates to 90 degrees, and the carbon dioxide casting bullet is finished in a free state.

While the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions do not depart from the spirit and scope of the embodiments of the invention.

Claims (8)

1. A CO2 marine storage device after carbon capture from a ship, characterized in that the CO2 marine storage device comprises a CO2 bomb and a throwing device, wherein the throwing device is used to throw the CO2 bomb from the ship into the ocean at a preset angle and preset speed; The carbon dioxide bomb is composed of liquid carbon dioxide, solid dry ice and an outer shell from the inside to the outside; The CO2 bomb is equipped with a two-piece armor reinforcement on the head to ensure that the bomb penetrates the seabed. The two-piece armor on the head is fixed with buckles; The throwing device completes the lifting, rotation and release operations of the carbon dioxide throwing bomb through the two-piece armor on the head. 2. A ship-based carbon dioxide ocean storage device after carbon capture according to claim 1, characterized in that the carbon dioxide throwing bomb body is a tapered cylindrical body with a conical head, an integrated tail fin is provided at the tail of the shell, and a GPS module is encapsulated at the tail of the shell. 3. A ship carbon capture and marine storage device for carbon dioxide according to claim 1, characterized in that the two-piece armor on the head is made of degradable plastic with a thickness of 3mm to 5mm. 4. A ship carbon capture and marine storage device for carbon dioxide according to claim 3, characterized in that the shell is made of PLA or PHA bio-based material and has a thickness of 2 to 3 mm. 5. A ship carbon dioxide ocean storage device after carbon capture according to claim 1, characterized in that the throwing device consists of a base, a vertical pole, a rocker arm, a rocker arm control module, a lifting module and a manipulator clamp, the base is fixed on the ship deck, one end of the vertical pole is fixed on the base, the other end of the vertical pole is connected to the rocker arm, a rocker arm control module is provided at one end of the rocker arm, the rocker arm control module is used to control the rocker arm to rotate in the horizontal direction, the other end of the rocker arm is provided with a manipulator clamp and a lifting module, the manipulator clamp is used to clamp the carbon dioxide throwing bomb, and the lifting module is used to lift the carbon dioxide throwing bomb. 6. A ship-based post-carbon capture carbon dioxide ocean storage device according to claim 5, characterized in that the throwing device also includes a water depth measurement module, which is used to measure the depth of the ocean in which the ship is located. When the measured depth reaches a preset depth, the throwing process of the carbon dioxide throwing bomb is started. 7. A ship-based carbon dioxide ocean storage device after carbon capture according to claim 5, characterized in that the throwing device also includes a control box, a ship speed sensor and a linear speed sensor, the ship speed sensor is used to collect the current horizontal speed of the ship in real time, and the linear speed sensor is used to measure the linear speed of the end of the rocker arm, and the PLC controller in the control box collects information from the ship speed sensor and the linear speed sensor and outputs an analog signal to control the rocker arm, so that the rocker arm is perpendicular to the sailing direction and the linear speed of the rocker arm end is consistent with the ship speed, and controls the manipulator clamp to release the carbon dioxide throwing bomb. 8. The marine storage device for carbon dioxide after ship carbon capture according to claim 5, characterized in that the vertical pole and rocker arm of the throwing device are made of 304L or 316L stainless steel.