Vehicle-mounted dehumidification protection air temperature type carbon dioxide gasification pry

Abstract

The utility model discloses a vehicle-mounted dehumidification protection air temperature type carbon dioxide gasification pry. The device comprises a protection box body and a gasifier located in the protection box body, the gasifier is provided with a gasification tube bundle, the front end of the gasification tube bundle is connected with the liquid separation side of a high-pressure common rail pipeline, and the rear end of the gasification tube bundle is connected with a carbon dioxide outlet pipeline through a collection box; the top of the protection box body is provided with a fan, the side face is provided with a shutter, and the bottom is provided with a dehumidification protection net and a folding protection bottom plate. And the fan adopts a blowing type or induced air type working mode, and adopts different air inlet modes according to different air humidity conditions, so that the gasification efficiency and stability are improved. According to the forced convection heat exchange principle, based on the bottom dehumidification device, the inertia separation technology of gas-liquid speed steering is utilized, two different operation states of the draught fan are adopted, and all-weather efficient, stable and safe high-pressure gasification operation is achieved by matching angle adjustment of the shutters on the two sides and air injection and entrainment to remove the influence of the boundary effect of the wall face.

Description

Technical Field

[0001] The utility model relates to a carbon dioxide gasification skid, in particular to a vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid suitable for the field of carbon dioxide mineralization. Background Art

[0002] In response to the implementation of carbon neutrality, more and more carbon capture and collection technologies are being applied in the market. The captured carbon dioxide is mostly stored in liquid form. The ensuing question is how to effectively utilize the captured carbon dioxide. Among them, the development of carbon dioxide mineralization technology is becoming increasingly mature, but its utilization of carbon dioxide is in the form of pressurized gaseous carbon dioxide. Therefore, it is urgent to develop a pressurized carbon dioxide gasification skid device suitable for the field of carbon dioxide mineralization.

[0003] The carbon dioxide gasification skid is a device that heats liquid carbon dioxide to produce a phase change into gaseous carbon dioxide through heat exchange. Currently, traditional gasification skids can be roughly divided into two types of heat exchange methods: indirect and direct. The former includes steam heating gasifiers, hot water bath gasifiers, air cooling gasifiers, forced ventilation gasifiers, electric heating gasifiers, and solid heat conduction gasifiers; the latter includes hot gas gasifiers and submerged combustion gasifiers.

[0004] Most of the current CO2 gasification skids use air-temperature gasification. The entire gasification skid is exposed to the outdoor air. The basic unit of the device is a gasification tube bundle, which consists of several gasification tubes arranged horizontally, connected to gas collecting pipes or liquid collecting pipes at both ends to form a tube bundle row. Then, several tube bundle rows are arranged vertically through elbows on both sides to form a gasifier, with liquid entering at one end and gas exiting at the other end. The tube bundles mostly use finned tubes in various forms, including plate-fin tubes, spiral finned tubes, star-shaped finned tubes, etc. During the gasification process, the heat from the natural convection of air outside the tube and the condensation and sublimation of water vapor and frost is transferred to the flowing low-temperature liquid working medium through the fins and heat exchange core tubes, so that it is gasified and heated to the required temperature without additional energy consumption.

[0005] However, the entire skid-mounted structure of the traditional CO2 gasification skid device is exposed to the ambient air, and mainly relies on the natural convection heat exchange of air to make the liquid CO2 absorb heat and gasify. The water vapor in the air will condense on the wall of the low-temperature gasification tube bundle, adhere to form a liquid film, and easily form a frost layer, which will significantly increase the heat transfer resistance, reduce the heat transfer efficiency between air and CO2, and lead to a decrease in the CO2 gasification efficiency. At the same time, the existing skid-mounted natural convection exchange method will also be greatly affected by air humidity, especially in the rainy season in the south or snowy days in the north, the gasification stability and gasification efficiency of the CO2 skid are seriously reduced, and it is difficult to achieve all-weather operation. For example, when the air humidity of the operating environment is high, the moisture in the air condenses on the surface of the gasifier, and forms an attached liquid film or further turns into a frost layer on the outer wall of different tubes of the gasification tube bundle, which is bound to greatly increase the heat transfer resistance of CO2 gasification, reduce the convective heat transfer coefficient of the outer wall of the tube bundle, significantly reduce the heat transfer efficiency of CO2 gasification, affect the stability of CO2 gasification, and affect the gasification efficiency of CO2.

[0006] For the current carbon dioxide gasification devices, on the one hand, the operating pressure is mostly low-pressure operation, and the CO2 in the gasification process has not only a small flow rate, but also a low pressure of the gasified CO2 gas, which is difficult to directly enter the pressurized carbon dioxide mineralization reaction device. There is no relevant content on the gasification skid device that produces high-pressure CO2 gasification gas and is directly used for high-pressure carbon dioxide mineralization reaction and the high-pressure gasification method thereof.

[0007] On the other hand, the CO2 gasification skid-type devices using air-temperature gasification technology currently have a structure with exposed gasification tube bundles. Most of their application scenarios are engineering sites. A large amount of environmental dust in the environment adheres to the gasification tube bundles, forming ash and scale thermal resistance, which will further increase the gasification heat transfer thermal resistance, reduce the gasification efficiency, and affect the gasification stability. At the same time, there is no protective structure around the tube bundle, and it cannot form effective protection for the internal devices. Especially during the movement of the gasification skid device, collisions are prone to occur, causing damage to the internal devices. Even if some equipment is equipped with protective equipment, the actual operation process is complicated and cannot be opened and closed quickly and conveniently.

[0008] In addition, for the gasification skids used in the field of carbon dioxide mineralization, the currently used carbon dioxide gasification skids are simple natural convection heat exchange structure settings of exposed gasification tube bundles. No detection devices are installed on the gasification tube bundles, and there are problems such as the inability to perform real-time data monitoring and rapid regulation of flow and temperature. The carbon dioxide mineralization work has certain requirements for the flow and temperature of the input gaseous carbon dioxide. The currently used exposed carbon dioxide gasification skids can no longer meet the needs of carbon dioxide mineralization work. Utility Model Content

[0009] In order to solve the problems existing in existing carbon dioxide gasification devices, such as low gasification stability, low gasification CO2 pressure, great influence by environment and air humidity, inconvenient device movement and weak protection, and inability to adapt to the demand for stable, efficient and high-pressure gaseous carbon dioxide in the field of carbon dioxide mineralization, as well as the problem of rapid response and adjustment of parameters such as gasification temperature, gasification volume and gasification pressure, the utility model provides an air-temperature carbon dioxide gasification skid with high efficiency, high pressure and stable operation around the clock, rapid response and dehumidification protection, which has broad application prospects in the field of carbon dioxide mineralization, especially in distributed mineralization scenarios.

[0010] The utility model comprises a protection box body and a gasifier located inside the protection box body.

[0011] The gasifier is provided with a gasification tube bundle, the front end of which is connected to the liquid separation side of the high-pressure common rail pipeline, and the rear end of which is connected to the carbon dioxide outlet pipeline through a header;

[0012] The protective box body is provided with a fan on the top, shutters on the sides, and a dehumidification protection net and a folding protection bottom plate at the bottom;

[0013] The fan adopts a forced draft or induced draft working mode, and adopts different air intake modes according to different air humidity conditions to improve gasification efficiency and stability.

[0014] Furthermore, a plurality of the gasification tubes are arranged transversely to form a tube bundle row, and the multi-layer tube bundle row is connected longitudinally through bent tubes on both sides to form a gasifier, the front end of the gasification tube bundle is connected to the liquid separation side of the high-pressure common rail pipeline, and the rear end of the gasification tube bundle is connected to the carbon dioxide outlet pipeline through a header, and a variety of sensors and actuators are arranged on the pipeline to monitor the state of carbon dioxide and perform rapid regulation to meet the pressure requirements of the carbon dioxide mineralization reaction device.

[0015] Furthermore, the gasification tube bundle adopts a horizontal structure and is inclined at a certain angle to one end to form an angle with the horizontal direction. The inclined angle facilitates the discharge of condensed water generated on the outer wall of the tube bundle along the wall tube direction by gravity.

[0016] Furthermore, the foldable protective bottom plate is closed during the transportation and installation of the gasification skid to protect the gasification tube bundle inside the box; it is opened during the gasification operation to form an air flow channel at the bottom.

[0017] Furthermore, the dehumidification protection net has a double-layer structure, which is used to increase the contact area between the air and the wall of the dehumidification protection net and change the flow direction of the humid air. The condensation heat exchange of the wall of the dehumidification protection net and the inertial separation technology of gas-liquid velocity steering are utilized to achieve condensation of humid air and gas-liquid separation.

[0018] Furthermore, the shutters can be adjusted at an angle of 180° and closed during the transportation of the gasification skid to protect the internal gasification device; when the gasification skid is in operation, the opening angle is adjusted in conjunction with the working mode of the fan, and the fan accelerates the air flow rate in the box, reduces the static pressure, and draws air on both sides from the shutters into the box, increasing the air intake, enhancing the forced convection heat exchange process, and is beneficial to improving the heat exchange efficiency.

[0019] Furthermore, it also includes a lifting base, which adopts a scissor-type lifting structure and is arranged at the four corners of the protective box. In an uneven working site, the height of the four lifting platforms can be adjusted to put the gasification skid at a safe working angle.

[0020] The utility model has the following advantages and effects:

[0021] Firstly, the utility model avoids the influence of air humidity (such as rainy and snowy weather) according to the air humidity conditions in the environment, adopts two different operating states of fan blowing or induced draft, cooperates with the angle adjustment of the louvers on both sides, and draws and ejects air to remove the influence of the wall boundary effect. It is coupled with the bottom dehumidification device and utilizes the inertial separation technology of wall condensation and gas-liquid velocity steering to effectively remove condensed droplets in the air, effectively prevent the formation of condensation liquid film or further formation of frost layer on the outer wall of the gasification tube bundle, and realize all-weather, efficient, stable, safe and high-pressure gasification operation.

[0022] Secondly, compared with the traditional natural convection air-temperature gasification skid, the utility model utilizes the principle of forced convection heat exchange. The shell-side flow field (outer wall of the gasification tube bundle) formed by the suction effect of the fan and the shutters vertically crosses the gasification tube bundle, and the turbulence and disturbance effects between the tube bundles are greatly increased, the boundary layer effect is significantly weakened, and the heat transfer effect is significantly improved; increasing the heat exchange efficiency of the gasification skid can improve the gasification rate, gasification stability and gasification pressure of carbon dioxide, and significantly reduce the impact of environmental changes during the gasification process.

[0023] Furthermore, in the field of CO2 mineralization, there are high requirements for CO2 gasification pressure, temperature, and flow. The real-time online monitoring and valve and fan control system of this device can monitor the CO2 gasification characteristic parameters in real time, and at the same time control the electric valves and fans to quickly regulate the CO2 gasification temperature, pressure, and flow, providing stable and efficient gaseous carbon dioxide for the CO2 mineralization device.

[0024] In addition, the outer box of the gasification skid not only forms the shell flow field of the gasification skid, strengthens the forced convection heat exchange effect of the shell flow field, but also protects the internal gasification tube bundle, improves the protection performance of the entire gasification skid device, and at the same time, the two form an integral structure for easy transportation and movement. By using the lifting device installed at the bottom and the opening and closing function of the bottom protective plate, it can be quickly and efficiently put into actual scene operation, significantly improving the convenience and mobility of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the gasifier in FIG.

[0027] Figure 3 for Figure 2 Right view of;

[0028] Figure 4 for Figure 1 The structural diagram of the shutter in FIG.

[0029] Figure 5 for Figure 1 Bottom view of

[0030] Figure 6 for Figure 5 A magnified image of;

[0031] Figure 7 for Figure 6 Side view in;

[0032] Figure 8 When the air blower is running Figure 1 Air flow diagram in right view;

[0033] Fig. 9 When the air is induced Figure 1 Air flow diagram in right view;

[0034] Fig.10 Change the air flow diagram for the dehumidification screen. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings:

[0036] The utility model is based on the principle of forced convection heat exchange, based on a bottom dehumidification device, utilizing the inertial separation technology of gas-liquid speed steering, adopting two different operating states of the fan, coordinating with the angle adjustment of the louvers on both sides, and ejecting and sucking air to remove the influence of the wall boundary effect, thereby realizing all-weather efficient, stable, safe and high-pressure gasification operation.

[0037] On the one hand, the vaporizer is built into a protective box, and the protective structures set on all sides of the protective box can protect the internal vaporizer from being damaged by external objects. The two form a unified whole, which is convenient for vehicle transportation. The vaporizer is made of high-pressure resistant material as a whole, and the inlet is connected to high-pressure liquid carbon dioxide. The static pressure difference is used to make the carbon dioxide in the tube bundle produce a sufficient flow speed. Fans are evenly distributed on the upper part of the protective box, and shutters are set on both sides. When the fan blows in external air, a large amount of air can be introduced and sucked in from the shutters at the same time. Compared with the traditional exposed vaporization skid device, it not only uses the air provided by the fan to form forced convection, but also controls the amount of air induced and sucked in by adjusting the angles of the shutters on both sides, which greatly increases the air flow and flow rate, forms a forced convection heat exchange process, and greatly increases the heat exchange efficiency of the vaporization skid.

[0038] On the other hand, in order to achieve all-weather operation and avoid the influence of air humidity (such as rain and snow), according to the humidity of the air in the actual operating environment, the fan is started in the blowing or induced state, and the shutter angle in the shutter is adjusted. The dehumidification protection net set at the bottom is used to remove the humidity in the air through the inertial separation principle of the gas-liquid flow channel to prevent the water vapor in the air from forming a liquid film or further forming a frost layer on the outer wall of the gasification tube bundle, so as to improve the gasification efficiency. In addition, the temperature, flow, pressure and other sensors and electric valves installed on the gasifier inlet and outlet pipes are connected to the main control panel at the rear of the protection box through electrical signals, so as to realize the parameter monitoring of the carbon dioxide gasification process, and the electric valves and fans are controlled by operating the control panel to realize the rapid regulation of the carbon dioxide gasification temperature, gasification pressure, gasification flow and other parameters, so as to meet the pressure requirements of the carbon dioxide mineralization reaction device, so as to directly provide high-pressure CO2 gasification gas to the carbon dioxide high-pressure mineralization device.

[0039] like Figure 1 , Figure 2 and Figure 5As shown, an embodiment of the present application provides a vehicle-mounted dehumidification air-temperature carbon dioxide gasification skid, including a gasifier 2 and a protective box 1, wherein the gasifier 2 includes a carbon dioxide liquid inlet pipeline 3, a high-pressure common rail pipeline 4, a gasification tube bundle 5, a header 6, and a carbon dioxide outlet pipeline 7. A plurality of gasification tubes are arranged transversely to form a tube bundle row, and the multi-layer tube bundle row is connected to the longitudinal arrangement through bent pipes on both sides to form the gasifier 2, the front end of the gasification tube bundle 5 is connected to the liquid separation side of the high-pressure common rail pipeline 4, and the rear end of the gasification tube bundle 5 is connected to the carbon dioxide outlet pipeline 7 through the header 6. The carbon dioxide inlet pipeline 3 is sequentially installed with an inlet low-temperature stop valve 8, an inlet temperature sensor 9, an inlet pressure sensor 10, and an inlet flow sensor 11. The outlet of the carbon dioxide inlet pipeline 3 is connected to the inlet of the high-pressure common rail pipeline 4, the outlet of the high-pressure common rail pipeline 4 is connected to the liquid inlet of the gasification tube bundle 5, the gas outlet of the gasification tube bundle 5 is connected to the gas inlet of the header 6, the gas outlet of the header 6 is connected to the gas inlet of the carbon dioxide outlet pipeline 7, the outlet pressure sensor 12, the outlet temperature sensor 13, the outlet flow sensor 14, and the outlet stop valve 16 are sequentially installed on the carbon dioxide outlet pipeline 7, and the safety vent valve 15 is connected in parallel on the carbon dioxide outlet pipeline 7 between the outlet temperature sensor 13 and the outlet stop valve 16. The sensor transmits the electrical signal to the main control panel 19 at the tail, and the sensor signal is monitored by the main control panel 19 to ensure the safety of the pipeline operation, and the electric valve can be controlled to quickly adjust the gasification process of the carbon dioxide in the pipeline. The protection box 1 is located outside the gasifier 2. A uniformly distributed fan 17 is provided on the top of the protection box 1, a shutter 18 is provided on the side, a main control panel 19 is provided at the rear, a lifting base 20 is provided at the bottom, a folding protection bottom plate 21 and a dehumidification protection net 28 are provided at the bottom, and the protection box 1 and the gasification tube bundle 5 constitute the shell structure of the gasification skid device.

[0040] In one embodiment, if Figure 3 As shown, the gasification tube bundle 5 adopts a straight fin 24 structure, and the gasification tube bundle 5 is connected to the support frame 25 through the straight fins 24 to maintain the stability of the gasification tube bundle 5 structure. The gasification tube bundle 5 is made of rust-proof aluminum alloy, which can withstand low temperature and high pressure, and the fins expand the heat transfer area, enhance the heat exchange efficiency, and improve the gasification efficiency.

[0041] Furthermore, the tube bundle of the gasifier 2 adopts a horizontal structure and is inclined at a certain angle to form an angle with the horizontal direction. The horizontal tube bundle can ensure that the air entering the shell side from the fan 17 vertically crosses the gasification tube bundle 5, and the air contacts the fins horizontally, which further strengthens the flow field disturbance on the outer wall of the tube bundle and reduces the boundary layer effect near the wall. Compared with the longitudinal flushing of the air on the tube bundle, the heat transfer coefficient of the outer wall of the tube bundle is significantly improved, thereby improving the heat exchange efficiency and enhancing the gasification capacity; at the same time, the air transported by the fan 17 causes the entrainment jet effect in the shell side to further form the entrainment jet effect. The louvers 18 are used to draw in fresh air from both sides, further increasing the disturbance of the shell flow field, reducing the wall laminar boundary layer effect, reducing thermal resistance, enhancing the shell heat transfer performance, and improving the shell heat transfer coefficient; adjusting the horizontal inclination angle of the gasification tube bundle 5 to facilitate the condensed water generated on the upper surface of the outer wall of the tube bundle to be discharged along the wall tube direction through gravity, preventing the formation and accumulation of condensed water film on the upper surface of the wall, thereby minimizing and reducing the formation of frost layer, further enhancing the heat transfer performance and stability of the gasification skid, and improving the gasification stability of the gasification skid device.

[0042] The gasification tube bundle 5 can be a corrugated tube, a spiral tube or a smooth tube. When a smooth tube is used, the outer surface of the smooth tube can adopt a straight rib or a ring rib structure. The straight rib structure increases the outer surface area of ​​the tube, and the heat transfer area is several times larger than that of an ordinary pipe. It can transfer heat from the outside of the tube to the inside of the tube more quickly, has a higher fin efficiency, and has a relatively mature manufacturing process, a simple production process, and a low cost.

[0043] The fan 17 arranged at the top can blow air to the gasification tube bundle 5. Compared with the traditional natural convection, the flow velocity on the air side is greatly increased, which enhances the fluid disturbance on the air side, enhances the heat exchange effect, and improves the gasification efficiency. The fan 17 is controlled by the main control panel 19 through an electrical signal. The staff can adjust the wind speed of the fan 17 and the opening of the valve according to the carbon dioxide gasification situation, and then control the temperature, flow rate and pressure of the gaseous carbon dioxide, so that the gasified CO2 can be directly used in the carbon dioxide high-pressure mineralization device.

[0044] like Figure 4 As shown, the shutters 18 set on both sides can draw in fresh air from both sides. The blades and the window frame are connected by a movable connecting rod 27 and controlled by a manual knob 26. During the transportation and installation of the device, the shutters 18 are closed to protect the internal gasifier 2 from being damaged and prevent external debris from entering the internal space of the protective box 1 and affecting the operation of the device. Under the control of the manual knob 26, the shutters 18 can be freely adjusted by 180°. The direction of the angle is coordinated with the working mode of the fan 17, such as Figure 8As shown, when the top fan 17 blows air inward, the shutters open upward, the flow velocity in the box increases, the static pressure decreases, and the upper air on both sides enters the box through the shutters 18, increasing the fluid disturbance around the tube bundles on both sides of the gasifier 2, enhancing heat exchange and improving the gasification efficiency.

[0045] like Figure 5 As shown, the foldable protective bottom plate 21 arranged at the bottom can manually open and close the bottom plate roller shutter 22 through the handle 23. The gasification skid device is closed during transfer and transportation to prevent the internal device from being damaged by sharp objects on the ground or on the transport vehicle. Together with the protective box 1, it forms an effective protection for the gasifier. It is opened during gasification operation to form an air flow channel at the bottom.

[0046] The four lifting bases 20 arranged at the bottom adopt a scissor-type lifting structure, which has the characteristics of simple structure, large lifting force and high reliability, does not occupy volume, is easy to use and maintain, and is arranged at the four corners of the protective box, and can be adjusted in height respectively. When the working ground of the gasification skid device is uneven, the gasification skid device can be adjusted to a safe working angle by adjusting the four lifting bases 20 respectively to avoid the situation where the carbon dioxide inlet is lower than the carbon dioxide outlet, so that the flow of carbon dioxide is not hindered by gravity. At the same time, it is convenient to discharge the condensed water formed on the surface of the tube bundle, thereby improving the gasification stability of the gasification skid.

[0047] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, a dehumidification protection net 28 is arranged at the bottom, which can increase the contact surface between the air and the wall of the dehumidification protection net 28 and change the flow direction of the humid air. The condensation heat exchange of the wall of the dehumidification protection net 28 and the inertial separation technology of the gas-liquid velocity steering are used to realize the condensation of the humid air and the gas-liquid separation, thereby achieving the dehumidification effect and preventing the fan 17 from sucking the bottom debris into the box when working, thereby damaging the gasification tube bundle 5. The protection net is a quadrilateral mesh 31 structure, which is arranged in a double layer cross in the gasification skid ( Fig.10 ), which can prevent the bottom debris from being sucked into the device and causing damage during the operation of the gasification skid device due to the influence of internal disturbance airflow. Most importantly, when the wet air enters the gasification skid shell from the bottom, it passes through the cross-arranged mesh protection net to form a staggered airflow steering structure channel. By using the gas-liquid inertial separation principle, it can quickly and efficiently achieve the primary separation of droplets in the air and reduce the water vapor content entering the gasification skid shell. Fig.10As shown in the figure, when the humid air flows into the gasification skid shell from bottom to top, most of the air first hits the lower mesh wire 30, changes the flow direction through the downward curved wall of the mesh wire 30, and then flows to the mesh 31, and then hits the mesh wire 30 of the upper protective net, flows through the upper mesh wire 30 and changes the flow direction again, and finally flows into the box through the upper mesh 31. In this process, the humid air undergoes multiple changes in flow direction, and the principle of gas-liquid inertial separation is used to achieve primary separation of droplets in the air. Furthermore, the curved structure of the mesh wire 30 greatly increases the contact area between the air and the wall of the dehumidification protective net 28. The water vapor in the humid air is condensed through the condensation heat exchange of the wall, and the secondary separation of droplets in the air is achieved, so that this type of gasification skid can operate stably in a high humidity environment, reflecting the all-weather operation capability of this type of gasification skid.

[0048] The two working modes of the fan 17 combined with the angle adjustment of the shutter 18 can effectively control the influence of the ambient air humidity. When the ambient air humidity of the working environment of the gasification skid is high, excessive moisture condenses on the surface of the gasification tube bundle 5, hindering the heat exchange between the outer wall of the gasification tube bundle 5 and the air side, affecting the heat exchange efficiency of the gasifier 2. At this time, the fan 17 on the top of the box adopts the induced draft mode, such as Fig. 9 As shown: the air in the box is blown out of the box by the fan 17, and the side louvers 18 are turned to an oblique downward angle, the air flow rate in the box is accelerated, and the ambient air on both sides and the bottom is attracted to enter the box through the louvers 18. The humid air introduced from the bottom is dehumidified by the dehumidification protection net 28, which reduces the condensation droplets in the air and improves the gasification efficiency.

[0049] The main control panel 19 can monitor the flow, temperature and pressure of the liquid carbon dioxide inlet pipeline 3 and the carbon dioxide outlet pipeline 7 through electrical signals, and adjust the wind speed of the fan 17 and the low-temperature stop valve 8 of the liquid carbon dioxide inlet pipeline 3 by referring to the outlet flow, temperature and pressure of carbon dioxide to adjust the gasification flow, temperature and pressure of carbon dioxide, thereby realizing the real-time monitoring and adjustment function of the carbon dioxide device, and directly providing stable high-pressure gasified carbon dioxide for the carbon dioxide high-pressure mineralization device.

[0050] The gasifier 2 is built into the protective box 1, and all other equipment is arranged on the protective box 1. The entire gasification skid device is integrated into a whole, so that the overall one-time transportation of the device can be achieved. At the workplace, the angle is adjusted by the lifting base 20, and the foldable protective bottom plate 21 is opened, and the device is in a ready-to-work state, which improves the transportation convenience of the carbon dioxide gasification skid device.

[0051] The gasification method of the utility model is as follows: the gasification skid has two working modes: blasting and induced air, to cope with different air humidity:

[0052] The gasification skid device is transported to the work site in one go by the vehicle. Before operation, the staff adjusts the height of the four legs of the gasification skid device from the ground by operating the lifting base 20. In the case of an uneven work site, the gasification skid device is placed at a horizontal angle and height that is convenient for operation. In a work site with a lot of debris, the gasification skid device is kept away from many destructive items on the ground to protect the internal gasification tube bundle 5. At the same time, the horizontal tilted arrangement of the gasification tube bundle 5 is conducive to the discharge of condensed water generated on the tube bundle wall. After adjusting the placement angle and position, the staff connects the high-pressure liquid carbon dioxide high-pressure storage tank to the carbon dioxide inlet pipeline 3. Because the high-pressure liquid carbon dioxide connected to the inlet generates sufficient static pressure with the outlet, the static pressure difference is used to inject the liquid carbon dioxide into the gasifier inlet pipeline 3, so that the carbon dioxide in the tube bundle has a sufficient flow rate.

[0053] Blowing mode means when the air humidity is low, the wind direction flows like Figure 8 As shown, on the main control screen 19, the fan 17 is turned on and the start wind speed is selected to blow air into the protective box 1, and the side shutters 18 are adjusted to open obliquely upward, and then the inlet low-temperature stop valve 8 is opened, and liquid carbon dioxide flows in from the carbon dioxide liquid inlet pipe 3, flows through the high-pressure common rail pipe 4, and then disperses into the uppermost gasification tube bundle 5. The liquid carbon dioxide presents an S-shaped flow trajectory from top to bottom in the gasification tube bundle 5. The fan 17 blows air into the gasification skid box, and air enters the box from the upper part of the box. The forced convection formed by the blowing of the fan 17 sweeps across the horizontal gasification tube bundle 5 from top to bottom. The air flow field between the gasification tube bundle 5 and the fins 24 is seriously disturbed, and there are many vortices and separation phenomena in the wind field. The boundary layer effect is weakened. Therefore, the air temperature of the finned tube increases, the temperature difference between the inside and outside increases, the heat exchange performance is enhanced, and the uppermost tube bundle is closest to the liquid inlet, the carbon dioxide temperature in the tube is the lowest, the distance to the fan 17 is the closest, the temperature difference is the largest, and the heat transfer temperature difference is increased. During this process, the fan 17 blows air into the box, the air velocity in the box is accelerated, and the ambient air on both sides is attracted to enter the box through the upwardly inclined louvers 18, which increases the fluid disturbance around the tube bundles on both sides of the gasifier 2, enhances the heat exchange, and improves the gasification efficiency. The ambient air entering the box exchanges heat with the liquid carbon dioxide through the gasification tube bundle 5, thereby gasifying the carbon dioxide.

[0054] During operation, the folding protective bottom plate 21 at the bottom is opened, and the entire gasification skid device is lifted by the hydraulic lifting base 20, forming a ventilation channel for air flow at the bottom of the device. The air from the blast and the shutters on both sides flows out of the box through the bottom ventilation channel, forming a continuous cycle of heat exchange process. The dehumidification protection net 28 at the bottom can prevent the bottom debris from being sucked into the device and causing damage during the operation of the gasification skid device due to the internal disturbance of the air flow. The gaseous carbon dioxide formed after a heat exchange process enters the header 6, and then flows through the carbon dioxide outlet pipe 7 to be sent to the external gas-using equipment. The main control screen 19 can detect the flow, temperature and pressure of the liquid carbon dioxide inlet pipe 3 and the carbon dioxide outlet pipe 7 through electrical signals, and refer to the parameter requirements of the subsequent carbon dioxide high-pressure mineralization equipment for gaseous carbon dioxide, and adjust the wind speed of the fan 17 and the opening of the inlet low-temperature stop valve 8 of the liquid carbon dioxide inlet pipe 3 through the main control screen 19 to control the carbon dioxide gasification parameters to meet the use requirements of the carbon dioxide high-pressure mineralization device, realizing the real-time monitoring and adjustment function of the carbon dioxide gasification skid device.

[0055] Induced air mode means when the air humidity is high, the wind direction flows like Fig. 9 As shown, on the main control screen 19, the fan 17 is turned on and the start wind speed is selected to draw air out of the protective box 1. The side shutters 18 are adjusted to open obliquely downward, and then the inlet low-temperature stop valve 8 is opened. Liquid carbon dioxide flows in from the carbon dioxide liquid inlet pipeline 3, flows through the high-pressure common rail pipeline 4, and then disperses into the uppermost gasification tube bundle 5. The liquid carbon dioxide presents an S-shaped flow trajectory from top to bottom in the gasification tube bundle 5. Under the action of the fan 17, the air will be blown from the bottom of the gasification skid to the dehumidification protection net 28. The dehumidification protection net 29 is a quadrilateral mesh 31 structure, as shown in FIG. Fig.10 As shown, the dehumidification protection net 29 is arranged in double layers in the gasification skid, and the mesh 31 of the lower protection net corresponds to the mesh wire 30 of the upper protection net, which can not only prevent the bottom debris from being sucked into the device and causing damage due to the internal disturbance of the airflow during the operation of the gasification skid, but also, most importantly, can condense the water vapor in the humid air and provide dehumidified air for the gasification skid in a high humidity environment. Figure 7 and Fig.10As shown, the mesh wire 30 of the dehumidification protection net 28 is a downward curved structure. When the humid air flows into the box from bottom to top, most of the air first hits the lower mesh wire 30, changes the flow direction through the downward curved wall of the mesh wire 30, and then flows to the mesh 31, and then hits the mesh wire 30 of the upper protective net, flows through the upper mesh wire and changes the flow direction again, and finally flows into the box through the upper mesh 31. In this process, the semicircular arc mesh wire 30 structure of the dehumidification protection net 28 can change the flow direction of the humid air many times, and uses the gas-liquid inertial separation principle to realize the primary inertial separation of droplets in the air. At the same time, the curved mesh wire 30 increases the separation of air and wall. The contact area of ​​the surface improves the condensation heat exchange efficiency of the moist air on the wall surface, realizes the secondary condensation heat exchange separation of the moist air, and provides the internal vaporizer 2 with air with lower humidity after dehumidification, which is beneficial to the heat exchange efficiency of the vaporization skid. When the dehumidified air high-speed jet enters the shell side and sweeps across the horizontal vaporization tube bundle 5 from bottom to top, a forced convection flow field is formed, and the jet suction effect is used to further suck in the ambient air from the louvers 18 on both sides, thereby strengthening the turbulence effect of the shell side wall, reducing the boundary layer effect of the shell side wall, enhancing the shell side heat exchange effect, and increasing the fluid disturbance around the tube bundles on both sides of the vaporizer 2, thereby enhancing the heat exchange and improving the gasification efficiency. Secondly, when the air humidity is high, the bottom-up induced draft operation mode can further facilitate the water vapor in the air to condense when encountering the gasification tube bundle 5 with a lower temperature, and form droplets on the lower surface of the wall of the gasification tube bundle 5. Under the action of gravity and the disturbance of the sweeping air, the formed droplets will not adhere to the tube bundle wall to form a liquid film, forming a three-stage separation of air and condensed droplets, thereby more efficiently improving the shell-side heat exchange effect, effectively removing the shell-side liquid film wall thermal resistance, and improving the gasification performance and stability of the gasification skid. In this way, the bottom induced draft is used, combined with the pore suction on both sides, and the condensation wall area increased by the bottom dehumidification net 28, the gas-liquid inertial separation technology of the staggered turning channel, and the disturbance removal of the condensation droplets generated by the gasification tube bundle fins 24, effectively removing water vapor in the air, avoiding the adhesion of the condensed water film to the gasification tube bundle fins 24, and thus enhancing the CO2 gasification performance of the gasification skid device. The subsequent operations are consistent with the above-mentioned low air humidity.

[0056] The embodiments described above are merely descriptions of the preferred implementation modes of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements made to the technical solutions of the utility model by ordinary technicians in this field should fall within the protection scope determined by the claims of the utility model.

Claims

1. A vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid, comprising a protection box and a gasifier located inside the protection box, characterized in that: The gasifier is provided with a gasification tube bundle, the front end of which is connected to the liquid separation side of the high-pressure common rail pipeline, and the rear end of which is connected to the carbon dioxide outlet pipeline through a header; The protective box body is provided with a fan on the top, shutters on the sides, and a dehumidification protection net and a folding protection bottom plate at the bottom; The fan adopts a forced draft or induced draft working mode, and adopts different air intake modes according to different air humidity conditions to improve gasification efficiency and stability.

2. The vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid according to claim 1 is characterized in that: Several of the gasification tubes are arranged transversely to form a tube bundle row, and the multi-layer tube bundle row is connected longitudinally through bent pipes on both sides to form a gasifier. The front end of the gasification tube bundle is connected to the liquid separation side of the high-pressure common rail pipeline, and the rear end of the gasification tube bundle is connected to the carbon dioxide outlet pipeline through a header. A variety of sensors and actuators are arranged on the pipeline to monitor the state of carbon dioxide and perform rapid regulation to meet the pressure requirements of the carbon dioxide mineralization reaction device.

3. The vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid according to claim 2 is characterized in that: The gasification tube bundle adopts a horizontal structure and is inclined at a certain angle to one end to form an angle with the horizontal direction. The inclined angle facilitates the condensed water generated on the outer wall of the tube bundle to be discharged along the wall tube direction by gravity.

4. The vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid according to claim 1 is characterized in that: The foldable protective bottom plate is closed during the transportation and installation of the gasification skid to protect the gasification tube bundle inside the box; it is opened during the gasification operation to form an air flow channel at the bottom.

5. The vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid according to claim 4 is characterized in that: The dehumidification protection net has a double-layer structure, which is used to increase the contact area between the air and the wall of the dehumidification protection net and change the flow direction of the humid air. The condensation heat exchange of the wall of the dehumidification protection net and the inertial separation technology of gas-liquid velocity steering are utilized to achieve condensation of the humid air and gas-liquid separation.

6. The vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid according to claim 4 is characterized in that: The shutters can be adjusted at an angle of 180° and closed during the transportation of the gasification skid to protect the internal gasification device. When the gasification skid is in operation, the opening angle is adjusted in conjunction with the working mode of the fan, and the fan accelerates the air flow rate in the box, reduces the static pressure, and draws air on both sides from the shutters into the box, increasing the air intake, enhancing the forced convection heat exchange process, and is beneficial to improving the heat exchange efficiency.

7. The vehicle-mounted dehumidification protection air-temperature carbon dioxide gasification skid according to claim 1 is characterized in that: It also includes a lifting base, which adopts a scissor-type lifting structure and is arranged at the four corners of the protective box. In an uneven working site, the heights of the four lifting platforms can be adjusted to ensure that the gasification skid is at a safe working angle.

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