Methanol gasification apparatus and method

Abstract

The application discloses a methanol gasification device and method. The methanol gasification device comprises a gasification treatment core, a power supply circuit board, an IGBT power module, a temperature sensor arranged at the outlet of the gasification treatment core, and a control circuit board electrically connected with the IGBT power module and the temperature sensor. The control circuit board is used for adjusting the heating power of the gasification treatment core through the IGBT power module according to the deviation between the real-time temperature of the methanol gas and the preset temperature required by the methanol gasification, so that the methanol gas discharged from the outlet of the gasification treatment core is maintained at the preset temperature. The application can maintain the methanol gas discharged from the outlet of the gasification treatment core at the preset temperature, so that the methanol gas with stable pressure is obtained, and the whole realization process is simple, safe and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of methanol gasification, in particular to a methanol gasification device and method. BACKGROUND

[0002] The part provided in this part is only background information related to the present application to facilitate those skilled in the art to understand the present application more thoroughly and accurately, which does not necessarily exist in the prior art.

[0003] Methanol is in liquid state at room temperature, and can be gasified when heated to above 64.7° under normal pressure. Methanol is commonly used as fuel in industrial applications after gasification.

[0004] Methanol is toxic, and if inhaled by the human body, it will cause poisoning, so it is safer to store in liquid state. When used, liquid methanol is converted into gaseous methanol by heating. For example, Chinese patent 2017214920183 discloses a high-gasification-rate methanol gasification reaction device, which comprises a molten salt tank and a methanol heat exchange device, a synthesis gasifier, and a synthesis reactor connected in sequence. The upper half of the synthesis gasifier is provided with a first heat exchanger, and the lower half is provided with a second heat exchanger. The outer wall of the synthesis reactor is provided with a third heat exchanger. The exhaust port at the bottom of the synthesis reactor is connected to the synthesis gas inlet at the lower part of the first heat exchanger. The molten salt medium inlet at the lower part of the third heat exchanger is connected to the molten salt tank, and the molten salt medium outlet at the upper part is connected to the molten salt medium inlet at the lower part of the second heat exchanger. The molten salt medium outlet of the second heat exchanger is connected back to the molten salt tank. In this technical solution, there is no related pressure detection device in the methanol heat exchange device, and there is no related pressure relief device. When the methanol heat exchange device is gasifying methanol, an explosion may occur if the gas pressure is too high, so there is a problem of unsafe use. SUMMARY

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a methanol gasification device and method, which is simple to implement and safe and reliable to use.

[0006] The present application proposes a methanol gasification device, which comprises a gasification treatment core, a power circuit board, and an IGBT power module electrically connected to the gasification treatment core and the power circuit board. The gasification treatment core has an inlet and an outlet. A temperature sensor is arranged at the outlet of the gasification treatment core, which is used to detect the real-time temperature of the methanol gas. A control circuit board is electrically connected to the IGBT power module and the temperature sensor, which is used to adjust the heating power of the gasification treatment core through the IGBT power module according to the deviation between the real-time temperature of the methanol gas and the preset temperature required for methanol gasification, so as to maintain the methanol gas discharged from the outlet of the gasification treatment core at the preset temperature.

[0007] In a preferred embodiment, the methanol gasification device further comprises a gas outlet joint in communication with the outlet of the gasification treatment core; a pressure relief valve is arranged on the gas outlet joint or on a communication pipeline between the gas outlet joint and the outlet of the gasification treatment core.

[0008] In a preferred embodiment, the gasification treatment core comprises a magnetic energy heating tube, an insulating inner tube sleeved outside the magnetic energy heating tube, an insulating outer tube sleeved outside the insulating inner tube, and an electromagnetic coil wound on the insulating outer tube, a gap between the magnetic energy heating tube and the insulating inner tube forms an evaporation cavity, and a gap between the insulating inner tube and the insulating outer tube forms a heat insulation cavity.

[0009] In a preferred embodiment, the gasification treatment core is vertically arranged, the lower end of the evaporation cavity is connected with a liquid inlet pipe, and the upper end of the evaporation cavity is connected with a gas outlet pipe, the liquid inlet pipe and the gas outlet pipe are respectively arranged as the inlet and the outlet of the gasification treatment core.

[0010] In a preferred embodiment, the inner side wall of the two ends of the magnetic energy heating tube is provided with an internal thread, and one end of the liquid inlet pipe and one end of the gas outlet pipe are correspondingly provided with an external thread, the liquid inlet pipe and the gas outlet pipe are respectively connected with the internal threads of the two ends of the magnetic energy heating tube through the external threads.

[0011] In a preferred embodiment, the magnetic energy heating tube, the insulating inner tube, and the insulating outer tube are coaxially arranged, and the two ends of the three are fixed by one end cap, the two end caps are provided with through holes, the liquid inlet pipe and the gas outlet pipe are arranged through the through holes of the two end caps, respectively, and the outer circumferential side of the liquid inlet pipe and the gas outlet pipe is provided with an end cap pressed on the two end caps.

[0012] In a preferred embodiment, the end cap is a plastic part, the magnetic energy heating tube and the end cap are metal parts, and the size of the end cap is not less than the inner diameter of the insulating inner tube.

[0013] In a preferred embodiment, a flow valve is arranged in the liquid inlet pipe, and the flow valve is electrically connected with the control circuit board.

[0014] In a preferred embodiment, the magnetic energy heating tube is a iron core, a stainless steel core, or a stainless iron core, and the insulating inner tube and the insulating outer tube are quartz tubes, glass tubes, or ceramic tubes.

[0015] The application further discloses a methanol gasification method using the methanol gasification device, which comprises the following steps:

[0016] determining a preset temperature required for methanol gasification;

[0017] delivering liquid methanol to the inlet of the gasification treatment core, heating and gasifying the liquid methanol to the preset temperature by the gasification treatment core, and obtaining methanol gas with stable pressure from the outlet of the gasification treatment core.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] The present application is based on electromagnetic induction heating to heat liquid methanol to gasify, using the deviation between the real-time temperature of methanol gas and the preset temperature required for methanol gasification as the control basis, by dynamically adjusting the heating power of the gasification processing core, the gasification processing core provides sufficient heating heat for liquid methanol, so that the methanol gas discharged from the outlet of the gasification processing core is maintained at the preset temperature to obtain methanol gas with stable pressure, the whole realization process is simple; in addition, since the methanol is formed in the evaporation cavity of the gasification processing core, the evaporation cavity is isolated from the electromagnetic coil through the insulating inner tube and the insulating outer tube, and no leakage occurs, the methanol and the electric component are completely isolated, so that the use is safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the three-dimensional assembly structure of the methanol gasification device.

[0021] Figure 2 is a schematic diagram of the front view structure of the methanol gasification device.

[0022] Figure 3 is a schematic diagram of the three-dimensional exploded structure of the gasification processing core.

[0023] Figure 4 is a schematic diagram of the internal structure of the gasification processing core. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined purpose, the specific embodiments, structures, features and effects according to the present application are described in detail below in combination with the drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0025] As Figures 1-2The application discloses a methanol gasification device, which comprises a casing 1, a gasification treatment core 2 arranged in the casing 1, an IGBT power module 3 for generating an alternating current to control the working of the gasification treatment core 2, a heat sink 4 connected with the IGBT module in contact, a control circuit board 5 for controlling the working of the IGBT power module 3, a power supply circuit board 6 for supplying power for the IGBT power module 3 and the control circuit board 5, the power supply circuit board 6 being electrically connected with the control circuit board 5 and the IGBT power module 3 respectively, a temperature sensor 282 arranged at the outlet of the gasification treatment core 2, the temperature sensor being electrically connected with the control circuit board 5, the real-time temperature of the methanol gas discharged from the outlet of the gasification treatment core 2 being detected by the temperature sensor 282 and transmitted to the control circuit board 5, and the control signal of the IGBT power module 3 being generated by the control circuit board 5 according to the deviation between the real-time temperature of the methanol gas and the preset temperature required by the methanol gasification to adjust the heating power of the gasification treatment core 2, when the real-time temperature of the methanol gas is less than the preset temperature, the current heating power of the gasification treatment core 2 is increased, when the real-time temperature of the methanol gas is greater than the preset temperature, the current heating power of the gasification treatment core 2 is decreased, and when the real-time temperature of the methanol gas is equal to the preset temperature, the current heating power of the gasification treatment core 2 is maintained. The heating power of the gasification treatment core 2 is dynamically adjusted to provide sufficient heating heat for the liquid methanol, so that the methanol gas discharged from the outlet of the gasification treatment core 2 is maintained at the preset temperature, thereby obtaining the methanol gas with stable pressure. The methanol gas with stable pressure is provided for the burner as fuel to be combusted, which is a prerequisite for obtaining stable fire power.

[0026] The temperature of the methanol gas is related to the pressure, and the higher the temperature is, the faster the gasification speed of the liquid methanol is, and the greater the pressure of the obtained methanol gas is. The relationship between the temperature and the pressure of the methanol gas can be determined through experiments in advance.

[0027] In addition, the methanol gasification device further comprises an outlet joint 9 in communication with the outlet of the gasification treatment core 2. A pressure relief valve 10 is arranged on the outlet joint 9 or on a communication pipeline between the outlet joint 9 and the outlet of the gasification treatment core 2. When the liquid methanol is heated and gasified into gaseous methanol in the gasification treatment core 2, if the pressure of the methanol gas discharged from the outlet of the gasification treatment core 2 exceeds the set pressure of the pressure relief valve 10, the pressure relief valve 10 is opened to release pressure, so that the pressure of the methanol gas discharged from the gasification treatment core 2 is ensured to be within a reasonable range, and the safety hazard of excessive pressure in the methanol gas conveying process is avoided.

[0028] The control circuit board 5 is powered by the power circuit board 6, and the IGBT power module 3 is controlled by the control circuit board 5 to output alternating current to the gasification treatment core 2, so that the gasification treatment core 2 works to heat and gasify liquid methanol into gaseous methanol, which is discharged from the gas outlet joint 9 for use; wherein the heat generated by the IGBT power module 3 during operation is dissipated by the heat sink 4, so that the IGBT power module 3 maintains a normal temperature, thereby ensuring the stable operation of the methanol gasification device.

[0029] Further combining Figure 3 and Figure 4 As shown in the figure, the gasification treatment core 2 includes a magnetic energy heating tube 21, an insulating inner tube 22 sleeved outside the magnetic energy heating tube 21, an insulating outer tube 23 sleeved outside the insulating inner tube 22, and an electromagnetic coil 24 wound on the insulating outer tube 23. The magnetic energy heating tube 21 and the insulating inner tube 22 have a gap therebetween to form an evaporation cavity 201, and the insulating inner tube 22 and the insulating outer tube 23 have a gap therebetween to form a heat insulation cavity 202.

[0030] The heat insulation cavity 202 is arranged to isolate the heat of the evaporation cavity 201. When the gasification treatment core 2 is working, the heat in the evaporation cavity 201 will radiate outward due to the high temperature of the evaporation cavity 201. Therefore, by arranging the heat insulation cavity 202 to isolate the heat of the evaporation cavity, the heat of the evaporation cavity 201 is isolated by the heat insulation cavity 201 and concentrated in the evaporation cavity, which can not only avoid the loss caused by the outward radiation of the heat of the evaporation cavity 201, improve the thermal efficiency of the gasification treatment core 2, but also avoid the heat conduction of the evaporation cavity 201 to the electromagnetic coil 24, avoid the easy overheating and dry burning of the electromagnetic coil 24, and improve the working stability of the gasification treatment core 2.

[0031] In one embodiment, the gasification treatment core 2 is arranged vertically, the lower end of the evaporation cavity 201 is connected with a liquid inlet pipe 27, and the upper end of the evaporation cavity 201 is connected with a gas outlet pipe 28. The liquid inlet pipe 27 and the gas outlet pipe 28 are arranged as the inlet and outlet of the gasification treatment core 2, respectively. Therefore, the liquid methanol enters the evaporation cavity from the liquid inlet pipe 27, exchanges heat with the magnetic energy heating tube 21 to be heated and gasified, and the formed methanol gas is discharged from the gasification treatment core 2 through the gas outlet pipe 28.

[0032] The two ends of the magnetic energy heating tube 21, the insulating inner tube 22 and the insulating outer tube 23 are fixed by two end caps 25, the two end caps 25 are provided with through holes 26, the liquid inlet pipe 27 and the gas outlet pipe 28 are arranged on the two through holes 26 respectively, and the outer circumferential side of the liquid inlet pipe 27 and the gas outlet pipe 28 is provided with end covers 29 pressed on the two end caps 25. The size of the end cover 29 is not less than the inner diameter of the insulating inner tube 22.

[0033] The end cap 25 is a plastic part, and the magnetic energy heating tube 21, the liquid inlet pipe 27, the gas outlet pipe 28 and the end cover are metal parts. When the gasification treatment core 2 is dry and the temperature is too high to cause the lower end cap 25 to melt, the insulated inner tube 22 loses the fixation of the end cap 25 and moves downward under the action of gravity, and when the end cap 25 is completely melted, the end cap 29 contacts the end cover 29. Since the size of the end cover 29 is not less than the inner diameter of the insulated inner tube 22, it is probable to ensure that the end cover 29 of the liquid inlet pipe 27 can still be sealingly connected to one end of the insulated inner tube 22, so as to avoid a large amount of leakage of liquid methanol or methanol vapor in the evaporation cavity 201, thereby improving the use safety of the methanol gasification device. In addition, when the upper end cap 25 also melts and is not completely melted, it is supported by the insulated inner tube 22 or the insulated outer tube 23 and remains in the installation position, and it is probable to ensure that the insulated inner tube 22 is sealingly connected to the end cover 29 of the gas outlet pipe 28, so as to avoid a large amount of leakage of liquid methanol or methanol vapor in the evaporation cavity, thereby improving the use safety of the methanol gasification device.

[0034] The magnetic energy heating tube 21, the insulated inner tube 22 and the insulated outer tube 23 are coaxially arranged in a tubular shape, which has three effects: first, it ensures the average spacing between the insulated inner tube 22 and the insulated outer tube 23, so as to reduce the possibility of collision between the insulated inner tube 22 and the insulated outer tube 23 when the insulated inner tube 22 and the insulated outer tube 23 move downward after the end cap 25 melts; second, the coaxial arrangement of the magnetic energy heating tube 21 and the insulated inner tube 22 effectively ensures that the thickness of the pipeline at each part of the annular evaporation cavity is uniform, so that the gasification effect is uniform; and third, it is convenient for positioning and assembling the magnetic energy heating tube 21, the insulated inner tube 22 and the insulated outer tube 23.

[0035] Specifically, the present application uses the gasification treatment core 2 to heat and gasify methanol to output stable-pressure methanol gas. The working principle of the gasification treatment core 2 is as follows: the IGBT power module 3 provides alternating current to the electromagnetic coil 24, the electromagnetic coil 24 generates an alternating magnetic field, the magnetic energy heating tube 21 continuously cuts the magnetic lines of force in the alternating magnetic field to generate a plurality of eddy currents to be inductively heated, and the heat is transmitted to the evaporation cavity; the liquid methanol is input into the evaporation cavity from the liquid inlet pipe 27, and heat exchange is generated with the magnetic energy heating tube 21 in the evaporation cavity to be heated, and when the temperature exceeds the boiling point, the vapor state methanol is formed and discharged from the gas outlet pipe 28, thereby realizing the heating and evaporation of the liquid methanol by the gasification treatment core 2.

[0036] The magnetic energy heating tube 21 is an iron core, a stainless iron core or a stainless steel core, and in a preferred embodiment, the magnetic energy heating tube is an iron core, which is cheap, easy to purchase and has good magnetic conductivity.

[0037] The inner side wall of the magnetic energy heating tube 21 is provided with an internal thread, and the outer circumferential side of the liquid inlet pipe 27 and the gas outlet pipe 28 is correspondingly provided with an external thread, and the liquid inlet pipe 27 and the gas outlet pipe 28 are screwed at the two ends of the magnetic energy heating tube 21 through the external threads, which is simple in structure, easy to process and convenient to assemble.

[0038] The outer circumferential side of the liquid inlet pipe 27 is provided with a first mounting hole, and a flow valve 272 for controlling the liquid flow in the liquid inlet pipe 27 is arranged on the first mounting hole, and the flow valve 272 is electrically connected with the control circuit board 5. The flow valve 272 is arranged to control the liquid flow into the evaporation cavity, and when the liquid flow is too large, the liquid in the evaporation cavity 201 will not be completely volatilized, at this time, the control circuit board 5 either increases the heating power of the gasification treatment core 2 or controls the liquid methanol flow into the evaporation cavity 201 through the flow valve 272 to reduce the liquid methanol flow, so that the methanol gasification device works normally. Similarly, when the liquid flow is too small, the methanol gasification device will not supply enough gas, at this time, the flow valve 272 is controlled to increase the liquid methanol flow into the evaporation cavity, so that the methanol gasification device supplies gas normally and maintains the working stability.

[0039] The gasification treatment core 2, the IGBT power module 3, the radiator 4, the control circuit board 5 and the power circuit board 6 are arranged on the mounting plate 7 and fixed in the cabinet 1 through the mounting plate 7, so as to improve the assembly efficiency of the methanol gasification device.

[0040] The end of the liquid inlet pipe 27 and the gas outlet connector 9 are arranged outside the cabinet 1, and during installation, only the liquid inlet pipe 27 and the gas outlet connector 9 need to be connected through a pipeline, which is convenient to install.

[0041] The radiator 4 is a semiconductor radiator 4, which has good heat dissipation effect and occupies small space.

[0042] The application also discloses a methanol gasification method using the methanol gasification device.

[0043] S1, determining a preset temperature required for methanol gasification;

[0044] S2, liquid methanol is delivered to the inlet of the gasification treatment core 2, and heated and gasified to a preset temperature by the gasification treatment core 2, and a pressure-stable methanol gas is obtained from the outlet of the gasification treatment core 2.

[0045] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A methanol gasification device, comprising a gasification processing core, a power supply circuit board and an IGBT power module electrically connected with the gasification processing core and the power supply circuit board, the gasification processing core having an inlet and an outlet; characterized in that, Also comprising: a temperature sensor arranged at the outlet of the gasification treatment core, the temperature sensor being used to detect the real-time temperature of the methanol gas; a control circuit board electrically connected with the IGBT power module and the temperature sensor, the control circuit board being used to correspondingly adjust the heating power of the gasification treatment core by the IGBT power module according to the deviation between the real-time temperature of the methanol gas and the preset temperature required for the methanol gasification, so as to maintain the methanol gas discharged from the outlet of the gasification treatment core at the preset temperature; a flow valve arranged in the liquid inlet pipe, the flow valve being electrically connected with the control circuit board, and the control circuit board being further used to control the opening degree of the flow valve according to the deviation between the real-time temperature of the methanol gas and the preset temperature required for the methanol gasification, so as to cooperatively adjust the heating power of the gasification treatment core.

2. The methanol gasification device according to claim 1, wherein Also comprising a gas outlet joint, the gas outlet joint being communicated with the outlet of the gasification treatment core; a pressure relief valve is arranged on the gas outlet joint or on a communication pipeline between the gas outlet joint and the outlet of the gasification treatment core.

3. The methanol gasification device according to claim 1 or 2, wherein The gasification treatment core comprises a magnetic energy heating tube, an insulating inner tube sleeved outside the magnetic energy heating tube, an insulating outer tube sleeved outside the insulating inner tube, and an electromagnetic coil wound on the insulating outer tube, and the magnetic energy heating tube and the insulating inner tube have a gap therebetween to form an evaporation cavity, and the insulating inner tube and the insulating outer tube have a gap therebetween to form a heat insulation cavity.

4. The methanol gasification device according to claim 3, wherein The gasification treatment core is vertically arranged, the lower end of the evaporation cavity is connected with a liquid inlet pipe, and the upper end of the evaporation cavity is connected with a gas outlet pipe, and the liquid inlet pipe and the gas outlet pipe are respectively arranged as the inlet and the outlet of the gasification treatment core.

5. The methanol gasification device according to claim 4, wherein The inner side wall of the two ends of the magnetic energy heating tube is provided with an internal thread, and one end of the liquid inlet pipe and one end of the gas outlet pipe are correspondingly provided with an external thread, and the liquid inlet pipe and the gas outlet pipe are respectively connected with the internal threads of the two ends of the magnetic energy heating tube through the external threads.

6. The methanol gasification device of claim 4, wherein, The magnetic energy heating tube, the insulating inner tube and the insulating outer tube are coaxially arranged, and the two ends of the three are respectively fixed by one end cap, the two end caps are provided with through holes, the liquid inlet pipe and the gas outlet pipe are respectively arranged through the two through holes, and the outer circumferential side of the liquid inlet pipe and the gas outlet pipe is provided with an end cover pressed on the two end caps.

7. The methanol gasification device of claim 6, wherein, The end cap is a plastic part, the magnetic energy heating tube and the end cover are metal parts, and the size of the end cover is not less than the inner diameter of the insulating inner tube.

8. The methanol gasification device of claim 3, wherein, The magnetic energy heating tube is a iron core, a stainless iron core or a stainless steel core, and the insulating inner tube and the insulating outer tube are quartz tubes, glass tubes or ceramic tubes.

9. A method for gasifying methanol using the methanol gasification apparatus according to any one of claims 1 to 8, characterized by, The method comprises the steps of: determining the preset temperature required for the methanol gasification; delivering the liquid methanol to the inlet of the gasification treatment core, heating and gasifying the liquid methanol to the preset temperature by the gasification treatment core, and obtaining the methanol gas with stable pressure from the outlet of the gasification treatment core.

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