A light hydrocarbon gas production plant

Abstract

The application discloses a light hydrocarbon gas production equipment, which comprises a liquid storage tank, a gas storage tank, an air compressor, a drying cavity, a heat exchanger, a cooling tower and a gas-liquid separation tank. The heat of the air compressor is utilized to heat the water circulating in the heating water pipe. The heated water exchanges heat with the liquefied fuel in the heat exchanger, so that the liquefied fuel is gasified and mixed with the injected dry high-pressure gas to form gasified fuel. The energy in the hot air generated by the air compressor of the production equipment in the workshop is fully utilized, and the cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of industrial gas production, and in particular to a light hydrocarbon gasification device. Background Technology

[0002] Industrial gas supply typically involves using a gas-liquid converter to transform liquid fuel into gaseous fuel before delivering it to industrial production equipment to provide power. However, in modern industrial equipment, the gas-liquid converter is usually directly connected to the industrial production equipment to provide fuel. In actual production, however, the gas-liquid conversion process consumes a large amount of energy, resulting in excessively high costs. For example, the invention patent with application number CN201710796494.2 discloses a fuel gasification system with a high gasification rate. The fuel gasification system includes: a fuel tank, a fuel pump, an ultrasonic generator, a compressed air generator, a dryer filter, a venturi pump, a pressure controller, and a burner. The top of the fuel tank is provided with a fuel inlet, a remote thermometer, a pressure gauge, an internal threaded ball valve for the pressure gauge, a long pipe for the pressure gauge, and a gas outlet. The inner wall of the fuel tank is provided with an anti-corrosion coating. The raw materials for preparing the anti-corrosion coating include: polyethylene glycol, 2,2-dimethylolbutyric acid, 1,2-bis(chlorodimethylsilyl)ethane, and trimethylisocyanate. A gas concentration sensor is provided on the inner wall of the top of the fuel tank. An atomizing nozzle is provided inside the fuel tank. This technical solution requires an ultrasonic generator to input vibration waves, which inevitably requires electricity to start the equipment in order to provide gasification energy for the fuel in the fuel tank. This results in low energy utilization throughout the workshop and increases production costs. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a light hydrocarbon gasification device that can improve the overall energy utilization rate within the workshop and effectively reduce costs.

[0004] According to a first aspect of the present invention, a light hydrocarbon gasification device includes a liquid storage tank, a gas storage tank, an air compressor, a drying chamber, a heat exchanger, a cooling tower, and a gas-liquid separator. The liquid storage tank is provided with a first liquid inlet for liquefied fuel, a first liquid outlet for liquefied fuel, and a first air inlet. The gas storage tank is provided with a second air inlet, a first air outlet, and a second air outlet. The air compressor is provided with a high-pressure gas outlet and has a built-in heating water pipe, which is provided with a first water inlet and a first water outlet. The dryer is provided with a third air inlet and a third air outlet. The heat exchanger has a built-in hot water exchange pipe, which is provided with a second water inlet and a second water outlet. The heat exchanger is also provided with a fourth air inlet, a first gas outlet for gasified fuel, and a second liquid inlet for liquefied fuel. The cooling tower is provided with a third water inlet and a third... The gas-liquid separator is equipped with a third liquefied fuel inlet, a third liquefied fuel outlet, a second gas outlet, and a gasification fuel inlet; wherein, the first liquefied fuel outlet is connected to the third liquefied fuel inlet, the first gas inlet is connected to the first gas outlet, a pressurizing device is provided between the first gas inlet and the first gas outlet, the second gas outlet is connected to the third gas inlet, the third gas outlet is connected to the fourth gas inlet, the high-pressure gas outlet is connected to the second gas inlet, the first gas outlet is connected to the gasification fuel inlet, the first water outlet is connected to the second water inlet, the second water outlet is connected to the third water inlet, and the third water outlet is connected to the first water inlet.

[0005] According to an embodiment of the present invention, a light hydrocarbon gasification device has at least the following beneficial effects: the heat of the air compressor is used to heat the water circulating in the heating water pipe, and the heated water exchanges heat with liquefied fuel in the heat exchanger to vaporize it, and mixes it with the injected dry high-pressure gas to form gasified fuel. This fully utilizes the energy in the hot air generated by the air compressor of the production equipment inside the workshop, and effectively reduces costs.

[0006] According to some embodiments of the present invention, the lower end of the gas storage tank is provided with a drain outlet, and the drain outlet is connected to an oil-water separator.

[0007] According to some embodiments of the present invention, a drying unit is provided between the high-pressure gas outlet and the gas storage tank, the drying unit having a water outlet end connected to the oil-water separator.

[0008] According to some embodiments of the present invention, a booster pump is provided between the first outlet and the second inlet.

[0009] According to some embodiments of the present invention, the heat exchanger is provided with an expansion valve, the expansion valve being provided with a second liquid inlet for the liquefied fuel and a fourth air inlet.

[0010] According to some embodiments of the present invention, the portion of the heating water pipe built into the air compressor has a meandering structure, and the portion of the hot water exchange pipe built into the heat exchanger has a meandering structure.

[0011] According to some embodiments of the present invention, the portion of the heating water pipe built into the air compressor has a spiral structure, and the portion of the hot water exchange pipe built into the heat exchanger has a spiral structure.

[0012] According to some embodiments of the present invention, the second gas outlet of the gasified fuel is connected to a gas-using terminal.

[0013] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0015] Figure 1 This is a schematic diagram of a light hydrocarbon gasification device according to an embodiment of the present invention;

[0016] 100. Liquid storage tank; 110. First liquid inlet for liquefied fuel; 120. First liquid outlet for liquefied fuel; 130. First air inlet;

[0017] 200. Gas storage tank; 210. Second air inlet; 220. First air outlet; 230. Second air outlet; 240. Drain outlet; 241. Oil-water separator;

[0018] 300. Air compressor; 310. High-pressure air outlet; 321. First water inlet pipe; 322. First water outlet pipe; 340. Drying unit;

[0019] 400. Dryer; 410. Third air inlet; 420. Third air outlet;

[0020] 500, Heat exchanger; 511, Second water inlet; 512, Second water outlet; 520, Fourth air inlet; 530, First air outlet for gasified fuel; 540, Second liquid inlet for liquefied fuel; 550, Expansion valve;

[0021] 600, Cooling tower; 610, Third water inlet; 620, Third water outlet;

[0022] 700. Gas-liquid separator; 710. Third liquefied fuel inlet; 720. Third liquefied fuel outlet; 730. Second gas outlet for gasified fuel; 740. Gasified fuel inlet; Detailed Implementation

[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0025] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0027] Reference Figure 1An embodiment of the present invention provides a light hydrocarbon gasification device, comprising a liquid storage tank 100, a gas storage tank 200, an air compressor 300, a drying chamber, a heat exchanger 500, a cooling tower 600, and a gas-liquid separator 700. The liquid storage tank 100 is provided with a first liquefied fuel inlet 110, a first liquefied fuel outlet 120, and a first air inlet 130; the gas storage tank 200 is provided with a second air inlet 210, a first air outlet 220, and a second air outlet 230; the air compressor 300 is provided with a high-pressure... Air outlet 310; air compressor 300 has a built-in heating water pipe (not shown in the figure), the heating water pipe is provided with a first water inlet pipe 321 and a first water outlet pipe 322; dryer 400 is provided with a third air inlet 410 and a third air outlet 420; heat exchanger 500 has a built-in heat exchange water pipe (not shown in the figure), the heat exchange water pipe is provided with a second water inlet 511 and a second water outlet 512; heat exchanger 500 is provided with a fourth air inlet 520, a first air outlet 530 for gasified fuel, and a liquefied fuel outlet. The system includes a second fuel inlet 540; a cooling tower 600 with a third water inlet 610 and a third water outlet 620; and a gas-liquid separator 700 with a third liquefied fuel inlet 710, a third liquefied fuel outlet 720, a second gas outlet 730, and a gasification fuel inlet 740. The first liquefied fuel outlet 120 is connected to the third liquefied fuel inlet 710, and the first gas inlet 130 is connected to the first gas outlet 220. A pressurizing device is provided between the first air outlet 220 and the second air outlet 230, which is connected to the third air inlet 410. The third air outlet 420 is connected to the fourth air inlet 520. The high-pressure gas outlet 310 is connected to the second air inlet 210. The first gas outlet 530 of the gasified fuel is connected to the gasified fuel inlet 740. The first water outlet is connected to the second water inlet 511. The second water outlet 512 is connected to the third water inlet 610. The third water outlet 620 is connected to the first water inlet.

[0028] In the actual operation of the entire light hydrocarbon gasification system, air, water, liquid fuel, and gaseous fuel have the following flow paths:

[0029] Firstly, the air, the cooling air generated in the air compressor 300 enters the air storage tank 200, part of the cooling air enters the dryer 400, and then enters the heat exchanger 500 (entering from the fourth air inlet 520) after passing through the dryer 400, where it mixes with the gaseous fuel.

[0030] Secondly, water is injected into the cooling tower 600 through the water supply pipe, and the cooling is carried out by the cooling water. The water line enters the heating water pipe from the first water inlet, and exchanges heat with the hot air from the air compressor 300 in the heating water pipe, which cools the air output from the high-pressure air outlet 310 and heats the cooling water into hot water. The hot water enters the heat exchanger 500 from the second water inlet 511, and exchanges heat with the liquid fuel entering the heat exchanger 500 in the hot water pipe, which turns the liquid fuel into gaseous fuel. The hot water is then initially cooled. The initially cooled water re-enters the cooling tower 600 from the third water inlet 610, undergoes secondary cooling in the cooling tower 600, and then enters the air compressor 300, and so on.

[0031] Third, liquid fuel. The liquid fuel in the storage tank 100 flows from the first liquid fuel outlet to the gas-liquid separator 700. The liquid fuel then enters the heat exchanger 500 through the gas-liquid separator 700. In the heat exchanger 500, it mixes with the cold air from the dryer 400. In the heat exchanger 500, the liquid fuel exchanges heat with the hot water in the hot water pipe and is converted into a gaseous state. It then mixes with the cold air from the fourth air inlet 520 to form a gaseous mixed fuel.

[0032] Fourth, gaseous fuel. The gasified fuel mixes with the cold air from the fourth air inlet 520 to form a gaseous fuel mixture with a certain compressed air-fuel ratio. The gaseous fuel mixture flows from the first gasification fuel outlet 530 to the gas-liquid separator. After separating the fuel that is still in a liquid state, it is discharged from the second gasification fuel outlet 730. Specifically, the second gasification fuel outlet 730 is connected to the gas-using terminal and provides an energy source for the gas-using terminal (such as large machine tools and other equipment).

[0033] To further explain the energy transfer process described above, the following points need to be emphasized: First, a pipeline connecting the first air inlet 130 and the first air outlet 220 is provided between the air storage tank 200 and the liquid storage tank 100. This pipeline is equipped with a pressurizing device, which is used to further pressurize the high-pressure gas from the air storage tank 200 and input it into the liquid storage tank 100 for preliminary air-fuel mixing. Second, the air from the air compressor 300 is first stored in the air storage tank 200 and then introduced into the heat exchanger 500 for gas mixing. This is because the air in the air compressor 300 generates a large amount of heat when cooled by cooling water. The water vapor produced is not required for gasification fuel. Therefore, before being injected into the heat exchanger 500, it needs to be injected into the dryer 400 for moisture drying, so that the cold air discharged from the third outlet 420 is free of moisture. Thirdly, the water circulates between the cooling tower 600, the hot water exchange pipe and the heating water pipe, and the heat comes from the air compressor 300 in the processing equipment. The equipment required for cooling is also common equipment in the workshop. Therefore, the excess energy generated by the processing equipment can be fully utilized, and the air source comes from the air compressor 300. All the energy comes from the excess energy and materials produced in daily production, which is more environmentally friendly.

[0034] In summary, the heat from the air compressor 300 is used to heat the circulating water in the heating water pipe. The heated water then exchanges heat with liquefied fuel in the heat exchanger 500, causing it to vaporize. It then mixes with the injected dry high-pressure gas to form gasified fuel. This fully utilizes the energy in the hot air generated by the air compressor 300 in the production equipment inside the workshop, effectively reducing costs.

[0035] In some embodiments, the hot air output by the air compressor 300 inevitably contains some liquid impurities (such as machine oil from processing equipment). At the same time, the cooled hot air also releases some moisture. In order to discharge the liquid impurities (including liquid water) in the air tank 200, a drain outlet 240 is provided at the lower end of the air tank 200. The drain outlet 240 is connected to an oil-water separator 241, which separates the finished oil and water and delivers the water to the floor drain, while the finished oil is recycled. Furthermore, a drying unit 340 is provided between the high-pressure air outlet 310 and the air tank 200. The drying unit 340 separates the moisture from the air in the air compressor 300. In order to centrally process the separated moisture, the drying unit 340 has a water outlet end, which is connected to the oil-water separator 241.

[0036] It should be mentioned that a booster pump is installed between the first outlet and the second inlet 511 to promote water circulation.

[0037] It should be mentioned that the heat exchanger 500 is equipped with an expansion valve 550, which has a second liquid inlet 540 and a fourth gas inlet 520 for liquefied fuel. The liquid and gas entering the expansion valve 550 are depressurized, expanded, and mixed by impact, thus completing the vaporization and mixing. Then, the hot water entering from the second water inlet 511 vaporizes the remaining liquid fuel, forming a gaseous mixed fuel that meets the usage requirements.

[0038] In Embodiment 1 of the present invention, the portion of the heating water pipe built into the air compressor 300 has a meandering structure, and the portion of the hot water pipe built into the heat exchanger 500 has a meandering structure. In Embodiment 2 of the present invention, the portion of the heating water pipe built into the air compressor 300 has a spiral structure, and the portion of the hot water pipe built into the heat exchanger 500 has a spiral structure. Whether it is a meandering structure or a spiral structure, it can extend the length of the air pipe in the housing, so that the liquid fuel entering the housing after passing through the expansion valve 550 can fully exchange heat with the hot air in the air pipe. On the one hand, it can ensure that the liquid fuel is fully vaporized, and on the other hand, it can ensure that the hot air can be fully cooled, ensuring that the temperature of the air entering from the fifth air inlet reaches the preset cooling temperature value.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A light hydrocarbon gasification device, characterized in that, include: The storage tank (100) is provided with a first liquid inlet (110) for liquefied fuel, a first liquid outlet (120) for liquefied fuel, and a first air inlet (130); The gas storage tank (200) is provided with a second air inlet (210), a first air outlet (220) and a second air outlet (230); An air compressor (300) is provided with a high-pressure air outlet (310). The air compressor (300) has a built-in heating water pipe, which is provided with a first water inlet pipe (321) and a first water outlet pipe (322). The dryer (400) is provided with a third air inlet (410) and a third air outlet (420); The heat exchanger (500) has a built-in hot water pipe, the hot water pipe is provided with a second inlet (511) and a second outlet (512), the heat exchanger (500) is provided with a fourth air inlet (520), a first gas outlet (530) for gasified fuel and a second liquid inlet (540) for liquefied fuel; The cooling tower (600) is equipped with a third water inlet (610) and a third water outlet (620); The gas-liquid separator (700) is provided with a third liquid inlet (710) for liquefied fuel, a third liquid outlet (720) for liquefied fuel, a second gas outlet (730) for gasified fuel, and a gas inlet (740) for gasified fuel. The liquefied fuel first outlet (120) is connected to the liquefied fuel third inlet (710), the first air inlet (130) is connected to the first air outlet (220), a pressurizing device is provided between the first air inlet (130) and the first air outlet (220), the second air outlet (230) is connected to the third air inlet (410), the third air outlet (420) is connected to the fourth air inlet (520), the high-pressure gas outlet (310) is connected to the second air inlet (210), the gasified fuel first outlet (530) is connected to the gasified fuel air inlet (740), the first water outlet pipe is connected to the second water inlet (511), the second water outlet (512) is connected to the third water inlet (610), and the third water outlet (620) is connected to the first water inlet pipe.

2. The light hydrocarbon gasification equipment according to claim 1, characterized in that, The lower end of the gas storage tank (200) is provided with a drain outlet (240), and the drain outlet (240) is connected to an oil-water separator (241).

3. The light hydrocarbon gasification equipment according to claim 2, characterized in that, A drying unit (340) is provided between the high-pressure gas outlet (310) and the gas storage tank (200). The drying unit (340) has a water outlet end, which is connected to the oil-water separator (241).

4. The light hydrocarbon gasification equipment according to claim 1, characterized in that, A booster pump is installed between the first water outlet pipe and the second water inlet (511).

5. The light hydrocarbon gasification equipment according to claim 1, characterized in that, The portion of the heating water pipe built into the air compressor (300) has a meandering structure, and the portion of the hot water exchange pipe built into the heat exchanger (500) also has a meandering structure.

6. The light hydrocarbon gasification equipment according to claim 1, characterized in that, The portion of the heating water pipe built into the air compressor (300) has a spiral structure, and the portion of the hot water exchange pipe built into the heat exchanger (500) also has a spiral structure.

7. The light hydrocarbon gasification equipment according to claim 1, characterized in that, The second gas outlet (730) of the gasified fuel is connected to the gas-using terminal.

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