Superheated steam generating device and method

Abstract

The invention relates to the technical field of energy and chemical industry, in particular to a superheated steam generating device and method. Comprising a water tank, a metering pump and a superheated steam generator, and the superheated steam generator comprises a generator shell, a generating inner container and an induction coil wound around the generator shell; a water inlet is formed in the upper end of the generator shell, an air outlet is formed in the lower end of the generator shell, and the generator liner is located in the generator shell; the generator inner container comprises an inner cavity pipe and steam partition plates arranged on the inner cavity pipe in a sleeving mode at certain intervals, air passing holes are formed in the steam partition plates, and an air outlet hole is formed in the end, close to the air outlet, of the inner cavity pipe. The device is high in heating rate and high in energy conversion rate. The temperature rise process is non-gradient temperature rise. High-temperature steam is efficiently generated at high speed. The generator shell heats water through induction heating, the heated steam is gradually heated to 500-600 DEG C required by reaction through a plurality of spacers and staggered air passing holes, and finally the steam is sprayed out from an air outlet. And steam is provided for the cracking furnace.

Description

Technical Field

[0001] The present invention relates to the technical field of energy chemical industry, and in particular to a superheated steam generating device and method. Background Art

[0002] The current recycling technologies for thermosetting composites mainly include three categories: mechanical recycling, thermal recycling and chemical recycling.

[0003] In the process of mechanical recycling, composite materials are chopped or ground into block particles of different sizes, short fibers and other materials, which can be used as fillers or reinforcement materials in new composite materials. This method is simple, but the fiber structure is greatly damaged during the recycling process, which limits the possibility of obtaining long fibers again.

[0004] The heat recovery method can decompose the resin matrix through the heat of air or inert gas to obtain GF: abbreviation of glass fiber; or CF: abbreviation of carbon fiber.

[0005] Chemical recycling uses chemical reagents to convert the resin matrix of the composite material into small molecules, thereby recovering the fiber. In addition, the combustion heat of the composite material can be converted into other forms of energy through energy recovery methods. This treatment method is simple, but the production cost is high. When the waste is burned, it is easy to emit toxic gases, and the landfill of the ash after combustion will also cause secondary environmental pollution.

[0006] Different recycling methods can recover resin and fiber products with different properties, so there are different ways to reuse them. Recycled products such as fibers are usually made into new structural or functional composite materials, and can also be used in construction materials such as cement, concrete and polymer mortar.

[0007] The heat recovery method requires high working environment, high temperature and high pressure for the recovery equipment.

[0008] The recycling cost is high, the heat is transferred by combustion, the efficiency is low and the combustion gas produces secondary pollution. The conventional method of using combustion to heat the furnace body, improper treatment of the exhaust gas and smoke produced by combustion will also cause environmental pollution.

[0009] The poor performance of recycled products is mainly due to the harsh recycling conditions. The traditional method is difficult to control temperature and other related conditions. Specifically, the traditional method is to burn and heat the furnace, which is difficult to control the temperature and cannot achieve precise temperature control.

[0010] The poor performance of recycled products is mainly due to the harsh recycling conditions. The traditional method is difficult to control the temperature and other related conditions. Specifically, the traditional method is to burn and heat the furnace body, which is difficult to control the temperature and cannot achieve precise temperature control. The heating rate is low and the energy conversion rate is not high. The heating process is non-gradient heating. The waste precipitation rate is not high. Summary of the invention

[0011] The present invention provides a superheated steam generating device, a water tank, a metering pump, and a superheated steam generator. The water in the water tank is passed into the superheated steam generator through the metering pump. The superheated steam generator is characterized in that the superheated steam generator comprises a generator shell, a generator inner tank, and an induction coil wound around the generator shell; the generator shell is provided with a water inlet and an air outlet connected to a first area where the shell is located, the generator inner tank is located in the generator shell, and the area where the space is located interferes with the first area; the generator inner tank comprises an inner cavity tube and a component, etc. A steam baffle is sleeved on the inner cavity tube at intervals, and the radial edge of the steam baffle is interference fit with the contour of the inner wall of the steam generator shell; an air hole is provided on each of the steam baffles away from the inner cavity tube and close to the inner wall of the generator shell, and an air outlet hole is provided at one end of the inner cavity tube close to the air outlet, the number of the air outlet holes is greater than or equal to two, and the area of ​​the air outlet hole is greater than two times and less than three times the area of ​​the air hole; the water inlet pipe of the metering pump is connected to the water tank, and the water outlet pipe of the metering pump is connected to the water inlet of the superheat generator shell; the induction coil is externally connected to a power supply.

[0012] Furthermore, the outer diameter of the steam baffle is equal to the inner diameter of the generator shell.

[0013] Furthermore, there are two or more steam baffles; the air holes on two adjacent steam baffles have no overlapping areas in their vertical projections when the steam baffles are in a horizontal position.

[0014] Furthermore, a thermal insulation layer is provided on the surface of the induction coil, and the thermal insulation layer is thermal insulation cotton or thermal insulation paint.

[0015] Furthermore, the air outlet holes are opened along the radial direction of the inner cavity tube wall; the number of the air outlet holes is two or more, and the minimum distance between every two air outlet holes with their centers as reference points is equal.

[0016] Furthermore, the gas outlet is connected to a superheated steam delivery pipe.

[0017] Furthermore, the superheated steam generating device also includes a box body, the water tank, the metering pump, and the superheated steam generator are arranged in the box body; a cooling fan is provided on the box body; the box body is specially provided with an air outlet, and a filter is provided on the air outlet; the box body is provided with a power cord threading port.

[0018] Furthermore, the water tank is a concave-shaped structure, the superheated steam generator is a cylinder, and is located in the recessed position of the concave-shaped structure of the water tank; the inner cavity tube is arranged perpendicular to the lower surface of the box body, and the cooling fan is arranged on the upper surface of the box body; the air outlet is opened on the side wall close to the lower surface of the box body; and a temperature sensor is provided on the generator casing.

[0019] A method for generating superheated steam, characterized in that the liquid is vaporized to the steam required by the carbon fiber cracking furnace by gradient heating from top to bottom through the air holes on two adjacent steam baffles in a structure in which the vertical projections of the steam baffles have no overlapping areas when the steam baffles are in a horizontal position.

[0020] Furthermore, the specific steps include: step one, filling the water tank with water; step two, detecting the leakage point of the generator; step three, starting the superheated steam generator; step four, starting the carbon fiber cracking furnace.

[0021] The device has a high heating rate and high energy conversion rate. The heating process is non-gradient heating. High-temperature steam is generated at high speed and high efficiency. The generator shell heats the water through induction heating, and gradually heats the heated steam to 500-600℃ required for the reaction through multiple spacers and dislocated air holes, and finally sprays out from the outlet. Provide steam for the cracking furnace. Improve the waste precipitation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the explosion of the three-dimensional structure of the superheated steam generator;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the superheated steam generating device of Example 2;

[0024] Figure 3 for Figure 2 A perspective structural diagram;

[0025] Figure 4 for Figure 2 Schematic diagram of the B-view structure;

[0026] Figure numerals: water tank 1, metering pump 2, superheated steam generator 3, generator shell 31, generator inner tank 32, induction coil 33, water inlet 4, air outlet 5, inner cavity tube 6, air outlet 61, steam baffle 7, air hole 71, box body 8, cooling fan 9, air outlet 10, power cord insertion port 11, superheated steam output pipe 12. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work belong to the scope of protection of the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0029] In addition, the terms "first", "second", a, b, c, d, e, f, etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] Example 1

[0031] refer to Figure 1 and Figure 2The present embodiment discloses a superheated steam generating device for the above technical problem, comprising a water tank 1, a metering pump 2, and a superheated steam generator 3. The water in the water tank 1 is passed into the superheated steam generator through the metering pump 2. The superheated steam generator 3 comprises a generator shell 31, a generator inner tank 32, and an induction coil 33 wound around the generator shell 31. The generator shell 31 is provided with a water inlet 4 and an air outlet 5 which are connected to the first area where the shell is located. The generator inner tank 32 is located in the generator shell 31. The region interferes with the first region; the generator liner 32 includes an inner cavity tube 6 and steam baffles 7 which are sleeved on the inner cavity tube 6 at equal intervals, and the radial edge of the steam baffle 7 is interference fit with the inner wall contour of the steam generator shell 31; each of the steam baffles 7 is provided with an air hole 71 away from the inner cavity tube 6 and close to the inner wall of the generator shell 31, and an air outlet hole 61 is provided at one end of the inner cavity tube 6 close to the air outlet 5, the number of the air outlet holes 61 is greater than or equal to two, and the area of ​​the air outlet hole 61 is greater than twice and less than three times the area of ​​the air hole 71;

[0032] The generator liner 32 includes an inner cavity tube 6 and a steam baffle 7 sleeved on the inner cavity tube 6 at a certain distance, and an air hole 71 is provided on the steam baffle 7. The end of the inner cavity tube 6 close to the air outlet is provided with an air outlet 61; the water inlet pipe of the metering pump 2 is connected to the water tank 1; the water outlet pipe of the metering pump 2 is connected to the water inlet 4 of the superheated steam generator shell 31; the induction coil 33 is externally connected to the power supply. The outer diameter of the steam baffle 7 is equal to the inner diameter of the generator shell 31. The steam baffle 7 divides the space in the generator shell 31 into multiple areas. Water passes through the air hole 71 from top to bottom and becomes superheated steam.

[0033] There are two or more steam baffles 7; the air holes 71 on two adjacent steam baffles 7 have no overlapping areas in their vertical projections when the steam baffles 7 are in a horizontal position.

[0034] A heat-insulating layer is provided on the surface of the induction coil 33, and the heat-insulating layer is heat-insulating cotton or heat-insulating paint.

[0035] The air outlet holes 61 are opened along the radial direction of the wall of the inner cavity tube 6; the number of the air outlet holes 61 is two or more, and the minimum distance between every two air outlet holes 61 with their centers as reference points is equal.

[0036] The outlet 5 is connected to a superheated steam delivery pipe. Water enters from the inlet and flows into the inner cavity; the coil is energized to heat the generator body; the heat vaporizes the water and enters the partition area through the air holes 71 on the side wall of the inner cavity tube 6; the air flow is blocked by the partition and continues to rise in the cavity; preferably, the air holes 71 that are offset by 180° enter the next heating cavity; through multiple such heating cavities, the gas can be heated to the required temperature; the operation and stop of the coil are fed back to the upper PLC control through the sensor.

[0037] Example 2

[0038] This embodiment is further limited on the basis of embodiment 1, referring to Figure 1 , Figure 2 and Figure 3 Figure 4 ,

[0039] The superheated steam generating device also includes a box body, a water tank 1, a metering pump 2, and a superheated steam generator 3 are arranged in the box body 8; a cooling fan 9 is provided on the box body; an air vent 10 is opened on the side wall of the box body, and a filter is provided on the air vent; and a power line insertion port 11 is provided on the box body.

[0040] The water tank 1 is a concave structure, and the superheated steam generator is a cylinder, which is located in the concave position of the concave structure of the water tank; the inner cavity tube is arranged perpendicular to the lower surface of the box body, and the cooling fan is arranged on the upper surface of the box body; the air outlet is opened on the side wall close to the lower surface of the box body; the generator shell is provided with a temperature sensor. The temperature sensor is arranged at the upper and lower ends of the generator shell and is connected to the PLC.

[0041] Water is injected into the water tank from the inlet, and the water in it flows out through the water outlet at the bottom of the water tank. The metering pump pumps the water into the water outlet pipe, and the water outlet pipe is connected to the top of the superheated steam generator; the superheated steam generator gasifies the water into superheated steam through electromagnetic induction heating; through the internal structure, it is finally ejected from the superheated steam outlet at the bottom, through the superheated steam output pipeline 12; the superheated steam is transported to the cracking furnace; the induction coil power supply enters through the power inlet and is connected to the control box, and the control processing unit is in the control box. The box body is provided with a box door, and a generator pipeline fixing plate and a water tank water inlet are provided above the box body. A fixing screw matched with the fixing plate is provided on the generator housing 31.

[0042] Example 3

[0043] This embodiment illustrates a method for generating superheated steam, in which the gas holes on the two adjacent steam baffles are used to vaporize the liquid to the steam required by the carbon fiber cracking furnace by gradient heating from top to bottom in a structure in which the vertical projection of the steam baffles does not overlap when the steam baffles are in a horizontal position. Such a setting can achieve a higher waste gas recovery rate, and the steam generating device is one of the key factors affecting the waste gas precipitation rate. The waste gas precipitation rate increases by 10-12%. The specific steps include: step 1, water tank filling; step 2, generator leakage detection; step 3, start the superheated steam generator; step 4, start the carbon fiber cracking furnace. Finally, it should be noted that the above embodiments are only used to illustrate the technical scheme of the present invention, not to limit it; although the present invention is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical scheme recorded in the above embodiments, or to replace some or all of the technical features therein by equivalent; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiment of the present invention.

Claims

1. A superheated steam generating device, comprising a water tank, a metering pump, and a superheated steam generator, wherein water in the water tank is passed into the superheated steam generator through the metering pump, characterized in that: The superheated steam generator comprises a generator shell, a generator inner tank and an induction coil wound around the generator shell; the generator shell is provided with a water inlet and an air outlet connected to a first area where the shell is located, and the generator inner tank is located in the generator shell and the area where its space is located interferes with the first area; the generator inner tank comprises an inner cavity tube and steam baffles sleeved on the inner cavity tube at equal intervals, and the radial edge of the steam baffle is interference fit with the inner wall contour of the steam generator shell; each of the steam baffles is provided with an air hole at a position away from the inner cavity tube and close to the inner wall of the generator shell, and an air outlet is provided at one end of the inner cavity tube close to the air outlet, the number of the air outlet holes is greater than or equal to two, and the area of ​​the air outlet holes is greater than twice and less than three times the area of ​​the air outlet holes; the water inlet pipe of the metering pump is connected to the water tank, and the water outlet pipe of the metering pump is connected to the water inlet of the superheated generator shell; the induction coil is externally connected to a power supply.

2. The superheated steam generating device according to claim 1, characterized in that: The outer diameter of the steam baffle is equal to the inner diameter of the generator shell.

3. The superheated steam generating device according to claim 1, characterized in that: There are two or more steam baffles; the air holes on two adjacent steam baffles have no overlapping areas in their vertical projections when the steam baffles are in a horizontal position.

4. The superheated steam generating device according to claim 1, characterized in that: A heat-insulating layer is arranged on the surface of the induction coil, and the heat-insulating layer is heat-insulating cotton or heat-insulating paint.

5. The superheated steam generating device according to claim 1, characterized in that: The air outlet holes are opened along the radial direction of the inner cavity wall; the number of the air outlet holes is two or more, and the minimum distance between every two air outlet holes is equal with their centers as reference points.

6. The superheated steam generating device according to claim 1, characterized in that: The gas outlet is connected with a superheated steam delivery pipe.

7. The superheated steam generating device according to claim 1, characterized in that: The superheated steam generating device also includes a box body, in which the water tank, the metering pump and the superheated steam generator are arranged; a cooling fan is provided on the box body; an air outlet is specially opened in the box body, and a filter is provided on the air outlet; and a power line threading port is provided on the box body.

8. The superheated steam generating device according to claim 7, characterized in that: The water tank is a concave-shaped structure, and the superheated steam generator is a cylinder, which is located at the recessed position of the concave-shaped structure of the water tank; the inner cavity tube is arranged perpendicular to the lower surface of the box body, and the cooling fan is arranged on the upper surface of the box body; the air outlet is opened on the side wall close to the lower surface of the box body; and a temperature sensor is provided on the generator casing.

9. A method for generating superheated steam based on the superheated steam generating device according to any one of claims 1 to 8, characterized in that: The liquid is vaporized to the steam required by the carbon fiber cracking furnace by gradient heating from top to bottom through the air holes on the two adjacent steam baffles in a structure where the vertical projections of the steam baffles have no overlapping areas when the steam baffles are in a horizontal position.

10. The superheated steam generating method according to claim 9, characterized in that: The following steps are involved: Step 1: Fill the water tank with water; Step 2: Detect the leakage point of the generator; Step three, start the superheated steam generator; Step four, start the carbon fiber cracking furnace.

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