A light hydrocarbon gas production system

Abstract

The application discloses a light hydrocarbon gas production system, which comprises a liquid storage tank, a gas storage tank, an air compressor, a drying cavity, a heat exchanger and a gas-liquid separation tank. Liquid fuel is heated and gasified by hot air in the heat exchanger, and is mixed with cooled air 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 gas production system. Background Technology

[0002] Industrial fuel supply typically involves using a gas-liquid converter to transform liquid fuel into gaseous fuel before delivering it to industrial production equipment as a power source. Currently, industrial equipment often connects the gas-liquid converter directly to the equipment to provide fuel. However, in actual production, the gas-liquid conversion process consumes a significant amount of energy, leading to excessively high costs. For example, patent application CN200710140093.8 discloses an atmospheric pressure liquid fuel gasification structure, which includes at least the following components: a fuel tank, a gasification drum, an air pump, a low-frequency generator, and a gas output pipe. The gasification drum further includes a gasification disc, and the low-frequency generator introduces low-frequency vibrations into the air pumped into the gasification disc, causing the bubbles output from the gasification disc to collide and continuously break, generating natural ultrasound in the liquid, thereby gasifying the liquid fuel. In this technical solution, low-frequency vibration waves need to be input from the outside, which inevitably requires the use of 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 system 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 system includes a liquid storage tank, a gas storage tank, an air compressor, a drying chamber, a heat exchanger, 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 connected to the second air inlet. The dryer is provided with a third air inlet and a third air outlet. The heat exchanger includes a shell and a gas pipe, the gas pipe being provided with a fourth air outlet and a fourth air inlet. The gas pipe portion is partially built into the shell, and the shell is provided with a fifth air inlet, a third liquid inlet for liquefied fuel, and a first air outlet for gasified fuel. The separator is equipped with a second liquefied fuel inlet, a second liquefied fuel outlet, a second gasified fuel outlet, and a gasified fuel inlet; wherein, the first liquefied fuel outlet is connected to the second liquefied fuel inlet, the first gas inlet is connected to the first outlet, a pressurizing device is provided between the first inlet and the first outlet, the second outlet is connected to the third outlet, the third outlet is connected to the fourth outlet, the fourth outlet is connected to the fifth outlet, the second liquefied fuel outlet is connected to the third liquefied fuel inlet, and the first gasified fuel outlet is connected to the gasified fuel inlet.

[0005] According to an embodiment of the present invention, a light hydrocarbon gasification system has at least the following beneficial effects: liquid fuel is heated and vaporized by hot air in a heat exchanger, and then remixed with cooled air to form gasified fuel, making full use of the energy in the hot air generated by the air compressor of the production equipment inside the workshop, and effectively reducing 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 first drying unit is provided between the air compressor and the air storage tank, the first drying unit having a first water outlet end connected to the oil-water separator.

[0008] According to some embodiments of the present invention, a second drying unit is provided between the fourth air outlet and the fifth air inlet, the second drying unit having a second water outlet connected to the oil-water separator.

[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 third liquid inlet for the liquefied fuel and a fifth air inlet.

[0010] According to some embodiments of the present invention, the portion of the trachea embedded in the housing has a meandering structure.

[0011] According to some embodiments of the present invention, the portion of the trachea embedded in the housing 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 system 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. First drying unit; 311. First water outlet;

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

[0020] 500, Heat exchanger; 511, Fourth air outlet; 512, Fourth air inlet; 520, Fifth air inlet; 530, Third liquid inlet for liquefied fuel; 540, First air outlet for gasified fuel; 550, Expansion valve; 560, Second drying unit; 561, Second water outlet;

[0021] 600. Gas-liquid separator; 610. Second liquefied fuel inlet; 620. Second liquefied fuel outlet; 630. Second gas outlet for gasified fuel; 640. Gasified fuel inlet; Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] Reference Figure 1 The light hydrocarbon gasification system of this invention includes a liquid storage tank 100, a gas storage tank 200, an air compressor 300, a drying chamber, a heat exchanger 500, and a gas-liquid separator 600. The liquid 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. The air compressor 300 is connected to the second air inlet 210. The dryer 400 is provided with a third air inlet 410 and a third air outlet 420. The heat exchanger 500 includes a shell and a gas pipe (not shown in the figure). The gas pipe is provided with a fourth air outlet 511 and a fourth air inlet 512. The gas pipe portion is built into the shell. The shell is provided with a fifth air inlet 520, a third liquid inlet 530 for liquefied fuel, and a gas-liquid separator. The gas-liquid separator 600 is provided with a first liquefied fuel outlet 540; a second liquefied fuel inlet 610, a second liquefied fuel outlet 620, a second gasified fuel outlet 630, and a gasified fuel inlet 640; wherein, the first liquefied fuel outlet 120 is connected to the second liquefied fuel inlet 610, the first inlet 130 is connected to the first outlet 220, a pressurizing device is provided between the first inlet 130 and the first outlet 220, the second outlet 230 is connected to the third inlet 410, the third outlet 420 is connected to the fourth inlet 512, the fourth outlet 511 is connected to the fifth inlet 520, the second liquefied fuel outlet 620 is connected to the third liquefied fuel inlet 530, and the first gasified fuel outlet 540 is connected to the gasified fuel inlet 640.

[0027] In the actual operation of the entire light hydrocarbon gasification system, air, liquid fuel, and gaseous fuel have the following flow paths:

[0028] Firstly, the hot air generated in the air compressor 300 enters the air storage tank 200. Part of the hot air enters the dryer 400 and then enters the heat exchanger 500. In the heat exchanger 500, it exchanges heat with the liquid fuel in the shell and forms cold air. Finally, it re-enters the heat exchanger 500 (entering from the fifth air inlet 520) and mixes with the gaseous fuel.

[0029] Secondly, liquid fuel. The liquid fuel in the storage tank 100 flows from the first liquid fuel outlet to the gas-liquid separator 600. The liquid fuel then enters the heat exchanger 500 through the gas-liquid separator 600. In the heat exchanger 500, it exchanges heat with the hot air from the dryer 400 and is converted into a gaseous state. It then mixes with the cold air from the fifth air inlet 520 to form a gaseous mixed fuel.

[0030] Third, gaseous fuel. The gasified fuel mixes with the cold air from the fifth 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 540 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 630. Specifically, the second gasification fuel outlet 630 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).

[0031] 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 heat exchange. Since the air in the air compressor 300 contains a large amount of water vapor, and the gasified fuel does not require water vapor, it needs to be injected into the first drying unit 310 for moisture drying before being injected into the heat exchanger 500, so that the cold air discharged from the fourth air outlet 511 is free of moisture. Thirdly, the hot air entering the heat exchanger 500 first exchanges heat with the liquefied fuel, cools down, and then re-enters the heat exchanger 500 to mix with the gasified original liquid fuel to form gasified fuel that meets the requirements, making full use of the heat and air from the air compressor 300.

[0032] In summary, the liquid fuel is heated and vaporized by hot air in the heat exchanger 500, and then remixed with the cooled air to form vaporized fuel. This fully utilizes the energy in the hot air generated by the air compressor 300 of the production equipment inside the workshop, effectively reducing costs.

[0033] It should be mentioned that the hot air output by the air compressor 300 inevitably contains some liquid impurities (such as machine oil from processing equipment). To drain these liquid impurities (including liquid water) from the air receiver 200, a drain outlet 240 is provided at the lower end of the air receiver 200. The drain outlet 240 is connected to an oil-water separator 241, which separates the finished oil and water, sending the water to a floor drain, while the finished oil is recycled. Furthermore, a first drying unit 310 is provided between the air compressor 300 and the air receiver 200, utilizing the first drying unit... Unit 310 pre-separates moisture from the air from the air compressor 300. In order to centrally process the separated moisture, the first drying unit 310 has a first water outlet 311, which is connected to the oil-water separator 241. Similarly, it should be mentioned that the cooled air will release some mixed water. In order to deal with this excess moisture, a second drying unit 560 is provided between the fourth air outlet 511 and the fifth air inlet 520. The second drying unit 560 has a second water outlet 561, which is connected to the oil-water separator 241.

[0034] In some embodiments, the heat exchanger 500 is provided with an expansion valve 550, which has a third liquid inlet 530 and a fifth air 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, hot air entering from the fourth air inlet 512 is used to vaporize the remaining liquid fuel, forming a gaseous mixed fuel that meets the usage requirements.

[0035] In one embodiment of the present invention, the portion of the air tube embedded in the housing has a meandering structure. In another embodiment, the portion of the air tube embedded in the housing has a spiral structure. Both meandering and spiral structures extend the length of the air tube within the housing, allowing the liquid fuel entering the housing after passing through the expansion valve 550 to fully exchange heat with the hot air in the air tube. This ensures both complete vaporization of the liquid fuel and adequate cooling of the hot air, guaranteeing that the temperature of the air entering from the fifth air inlet 520 reaches the preset cooling temperature value.

[0036] 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 system, 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 connected to the second air inlet (210), and a first drying unit (310) is provided between the air compressor (300) and the air storage tank (200); The dryer (400) is provided with a third air inlet (410) and a third air outlet (420); The heat exchanger (500) includes a shell and a gas pipe. The gas pipe is provided with a fourth gas outlet (511) and a fourth gas inlet (512). The gas pipe is partially built into the shell. The shell is provided with a first gas outlet (540) for gasified fuel. The heat exchanger (500) is provided with an expansion valve (550). The expansion valve (550) is provided with a third liquid inlet (530) for liquefied fuel and a fifth gas inlet (520). The liquid and gas entering the expansion valve (550) are mixed by decompression expansion and impact before entering the shell. The gas-liquid separator (600) is provided with a second liquid inlet (610) for liquefied fuel, a second liquid outlet (620) for liquefied fuel, a second gas outlet (630) for gasified fuel, and a gas inlet (640) for gasified fuel. The liquefied fuel first outlet (120) is connected to the liquefied fuel second inlet (610), 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 (512), the fourth air outlet (511) is connected to the fifth air inlet (520), the liquefied fuel second outlet (620) is connected to the liquefied fuel third inlet (530), the gasified fuel first outlet (540) is connected to the gasified fuel inlet (640), and a second drying unit (560) is provided between the fourth air outlet (511) and the fifth air inlet (520).

2. The light hydrocarbon gasification system 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. A light hydrocarbon gasification system according to claim 2, characterized in that... The first drying unit (310) has a first water outlet (311) which is connected to the oil-water separator (241).

4. A light hydrocarbon gasification system according to claim 2, characterized in that... The second drying unit (560) has a second water outlet (561) which is connected to the oil-water separator (241).

5. A light hydrocarbon gasification system according to claim 1, characterized in that, The portion of the trachea that is built into the shell has a meandering structure.

6. A light hydrocarbon gasification system according to claim 1, characterized in that, The portion of the trachea that is built into the shell has a spiral structure.

7. A light hydrocarbon gasification system according to claim 1, characterized in that, The second gas outlet (630) of the gasified fuel is connected to the gas-using terminal.

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