C4 preparation process and system

Abstract

The invention relates to the technical field of C4 preparation, and discloses a C4 preparation process and system.A condensation plate is arranged in a treatment tower and installed at one end of the surface of a refrigerator, a plurality of cooling fins are fixedly connected to the other end of the surface of the refrigerator, a protection box is fixedly connected to the other end of the surface of the refrigerator, and the protection box is arranged on the outer surfaces of the cooling fins; the transverse plate is vertically and slidably connected into the treatment tower, the transverse plate is horizontally arranged, the two bottom parts of the transverse plate are vertically and fixedly connected with connecting columns, the bottom ends of the two connecting columns are fixedly connected with piston plates, the treatment tower is provided with a sliding mechanism for sliding the transverse plate, and a cooling mechanism for the refrigerator is arranged in the treatment tower. Through the arrangement of the condensation plate, water contained in C4 can be conveniently condensed into water through the surface of the condensation plate during use, so that the preparation effect of the C4 is improved, meanwhile, the condensed water can be collected, and the device is cooled, so that the utilization effect of energy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of C4 preparation, and particularly relates to a C4 preparation process and system. Background Art

[0002] C4 (carbon four) compounds generally refer to hydrocarbon compounds composed of four carbon atoms. The most common ones include butane (C4H10) and butene (C4H8). C4 compounds have a wide range of applications in the fields of chemical industry, fuels, synthetic materials, etc. By pyrolyzing petroleum or natural gas at high temperature, a series of small-molecule hydrocarbons can be obtained, including C4 compounds. This process is usually carried out at high temperature, and the use of catalysts can improve the yield and selectivity. By subjecting larger-molecule hydrocarbons to hydrotreating, C4 and its derivatives can be obtained. Catalysts are required in this process and it is carried out under high temperature and high pressure. Under certain temperature and catalyst conditions, heavier hydrocarbons are recombined to form lighter C4 compounds. This process can increase the yield of light hydrocarbons. Especially in the petroleum refining process, C4 compounds can be obtained by pyrolyzing or fermenting biomass. This method has received increasing attention in the field of renewable energy. Through the chemical reaction of syngas and using suitable catalysts, hydrocarbon compounds containing C4 can be synthesized.

[0003] During the C4 preparation process, the C4 gas that needs to be separated and distilled still contains a relatively large amount of moisture, which can reach nearly 1600 ppm. In some usage scenarios, it will seriously affect the pre-performance, safety and final product quality. For example, when used as a fuel, a high water content will affect the combustion efficiency; when used as a raw material for organic synthesis, it will easily reduce the product purity. Some existing C4 preparation devices usually cannot remove the moisture inside C4, thus affecting the final effect of C4. Therefore, the above problems need to be solved. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes a C4 preparation process and system.

[0005] A C4 preparation process and system proposed by the present invention mixes petroleum with dilution steam and rapidly heats it to 800-1100°C in a tubular furnace, with a residence time of only 0.01-0.02 seconds to avoid excessive coking; quenching and separation: the reaction product is rapidly cooled to below 550°C through a quench heat exchanger to terminate the reaction; and then separated into a mixed C4 petroleum hydrocarbon gas through a fractionating tower; the mixed C4 petroleum hydrocarbon gas is transported to a C4 treatment tower for separation, and C4 hydrocarbons are obtained from the top of the treatment tower; a refrigerator is installed on the surface of the treatment tower, a condensation plate is arranged inside the treatment tower, the condensation plate is installed at one end of the surface of the refrigerator, a plurality of radiating fins are fixedly connected to the other end of the surface of the refrigerator, a protective box is fixedly connected to the other end of the surface of the refrigerator, the protective box is arranged on the outer surface of the plurality of radiating fins, a cross plate is vertically slidably connected inside the treatment tower, the cross plate is horizontally arranged, two connection columns are vertically and fixedly connected to the bottom of the cross plate, piston plates are fixedly connected to the bottom ends of the two connection columns, a sliding mechanism for sliding the cross plate is arranged on the treatment tower, a temperature reduction mechanism for the refrigerator is arranged inside the treatment tower, through the arrangement of the condensation plate, it is convenient to condense the water contained in the C4 into water on the surface of the condensation plate during use, thereby improving the preparation effect of C4, and at the same time collecting the condensed water and dissipating heat from the device, thereby improving the utilization effect of energy.

[0006] Preferably, a fixing ring is sleeved at the bottom of the treatment tower, a plurality of support legs are fixedly connected to the surface of the fixing ring, an air inlet pipe and an air outlet pipe are fixedly connected to the surface of the treatment tower, the air outlet pipe is arranged above the air inlet pipe, and the air outlet pipe is arranged above the condensation plate, which is used to support the device and make the use of the device more convenient.

[0007] Furthermore, the sliding mechanism includes a lead screw, the lead screw is rotatably connected to the center inside the treatment tower, the lead screw is vertically arranged, the bottom end of the lead screw is rotatably connected to the inner bottom of the treatment tower, the top end of the lead screw is arranged at the bottom of the condensation plate, the lead screw is rotatably sleeved inside the cross plate, the cross plate is matched with the lead screw, two slide ways are vertically and fixedly connected inside the treatment tower, two limiting rods are horizontally fixedly connected to the surface of the cross plate, the two ends of the two limiting rods away from each other are respectively slidably connected inside the two slide ways, a rotating shaft is rotatably connected to the center inside the treatment tower, the rotating shaft is fixedly connected to the top end of the lead screw, a fixed sleeve is sleeved at the center inside the condensation plate, the rotating shaft is rotatably sleeved inside the fixed sleeve, the top end of the rotating shaft is rotatably sleeved inside the inner top of the treatment tower, and a motor is installed on the top of the treatment tower, and the output end of the motor is fixedly connected to the top end of the rotating shaft, which is used to limit the two piston plates to slide up and down inside the treatment tower, and at the same time squeeze the water inside the two receiving boxes.

[0008] Preferably, two slide bars are rotatably connected inside the treatment tower. Both of the two slide bars are horizontally arranged. Both of the two slide bars are slidably connected to the bottom of the condensation plate. Support rods are fixedly connected to the bottoms of both of the two slide bars. A connecting sleeve is rotatably connected to the center inside the treatment tower. The connecting sleeve is rotatably connected to the bottom of the condensation plate. Fixing rings are fixedly connected to the mutually approaching ends of the two connecting sleeves on the surface of the connecting sleeve. The connecting sleeve is sleeved on the surface of the rotating shaft, which is used to rotate the two slide bars, so as to facilitate scraping the water at the bottom of the condensation plate, thereby improving the preparation efficiency of C4.

[0009] Furthermore, the cooling mechanism includes receiving boxes. There are two receiving boxes. Both of the two receiving boxes are fixedly connected to the bottom of the treatment tower. Both of the two receiving boxes are communicated with the inside of the treatment tower. The two receiving boxes respectively correspond to the two piston plates. The two piston plates respectively cooperate with the two receiving boxes. A U-shaped pipe is arranged at the bottoms of the two receiving boxes. The two ends of the top of the U-shaped pipe are respectively fixedly connected to the centers of the bottoms of the two receiving boxes. One-way valves are installed at both ends of the surface of the U-shaped pipe. A connecting pipe is fixedly connected to the surface of the U-shaped pipe. The connecting pipe is arranged in an L shape. The top end of the fixing ring is fixedly connected to a bent pipe. The upper and lower ends of the protective box are respectively fixedly connected to a water inlet pipe and a water outlet pipe. One end of the bent pipe is fixedly connected to the surface of the water inlet pipe. The bottom end of the water outlet pipe is fixedly connected to an extension pipe, which is used to convey the water inside the two receiving boxes, so that the condensed water can be conveyed into the protective box, and the cooler is cooled by a plurality of radiating fins.

[0010] In the present invention, when in use, the C4 gas containing more water vapor passes through the inside of the treatment tower. Under the action of the condensation plate, the water vapor in the C4 gas will be condensed, and thus water droplets will be formed, so that the water vapor in the C4 gas can be removed, and further the preparation effect of C4 can be improved.

[0011] During the use process, by rotating the lead screw and the rotating shaft, the two slide bars will be driven to rotate, so that the bottom of the condensation plate can be continuously slid, so that the condensed water droplets can be scraped, thereby improving the preparation efficiency of C4. At the same time, the generated water droplets will flow into the two receiving boxes at the bottom of the treatment tower. By compressing the inside of the two receiving boxes, the condensed water droplets can be conveyed into the protective box, so as to facilitate cooling the cooler and thus improving the use effect of the device. Description of the Drawings

[0012] Figure 1 is the front view of a C4 preparation device proposed by the present invention;

[0013] Figure 2 is the internal structural cross-sectional view of the treatment tower of a C4 preparation device proposed by the present invention;

[0014] Figure 3 Schematic diagram of a sliding mechanism of a C4 preparation device proposed by the present invention;

[0015] Figure 4 Partial structural schematic diagram of a C4 preparation device proposed by the present invention;

[0016] Figure 5 Schematic diagram of a cooling mechanism of a C4 preparation device proposed by the present invention;

[0017] Figure 6 Partial structural schematic diagram of a C4 preparation device proposed by the present invention;

[0018] Figure 7 Internal mechanism schematic diagram of a C4 preparation device proposed by the present invention;

[0019] Figure 8 Cross-sectional view of the surface structure of a C4 preparation device proposed by the present invention.

[0020] In the figure: 1, treatment tower; 101, intake pipe; 102, outlet pipe; 103, slideway; 104, receiving box; 2, fixing ring; 201, support leg; 3, refrigerator; 301, condensation plate; 302, fixing sleeve; 303, protective box; 304, heat sink; 305, water inlet pipe; 306, water outlet pipe; 307, extension pipe; 4, cross plate; 401, limit rod; 402, connecting column; 403, piston plate; 5, slide rod; 501, support rod; 502, connecting sleeve; 6, lead screw; 601, rotating shaft; 602, motor; 7, U-shaped pipe; 701, one-way valve; 702, connecting pipe; 703, elbow pipe. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Refer to Figures 1-5, A C4 preparation process and system, which mixes petroleum with dilution steam, rapidly heats it to 800 - 1100 °C in a tubular furnace, and has a residence time of only 0.01 - 0.02 seconds to avoid excessive coking; quenching and separation: The reaction product is rapidly cooled to below 550 °C through a quench heat exchanger to terminate the reaction; then it is separated into a mixed C4 petroleum hydrocarbon gas through a fractionating tower; the mixed C4 petroleum hydrocarbon gas is transported to a C4 treatment tower 1 for separation, and C4 hydrocarbons are obtained from the top of the treatment tower 1; a cooler 3 is installed on the surface of the treatment tower 1, a condensation plate 301 is arranged inside the treatment tower 1, the condensation plate 301 is installed at one end of the surface of the cooler 3, multiple heat dissipation fins 304 are fixedly connected to the other end of the surface of the cooler 3, a protective box 303 is fixedly connected to the other end of the surface of the cooler 3, the protective box 303 is arranged on the outer surface of the multiple heat dissipation fins 304, a cross plate 4 is vertically slidably connected inside the treatment tower 1, the cross plate 4 is horizontally arranged, two bottom ends of the cross plate 4 are both vertically and fixedly connected with connecting columns 402, piston plates 403 are fixedly connected to the bottom ends of the two connecting columns 402, the treatment tower 1 is provided with a sliding mechanism for sliding the cross plate 4, and a temperature reduction mechanism for the cooler 3 is arranged inside the treatment tower 1. Through the setting of the condensation plate 301, it is convenient to condense the water contained in the C4 into water on the surface of the condensation plate 301 during use, thereby improving the preparation effect of C4. At the same time, the condensed water is collected, and the device is cooled, thereby improving the utilization effect of energy.

[0023] Refer to Figure 1 and Figure 2 , In a preferred embodiment, a fixed ring 2 is sleeved at the bottom of the treatment tower 1, multiple support legs 201 are fixedly connected to the surface of the fixed ring 2, an air inlet pipe 101 and an air outlet pipe 102 are fixedly connected to the surface of the treatment tower 1, the air outlet pipe 102 is arranged above the air inlet pipe 101, and the air outlet pipe 102 is arranged above the condensation plate 301, which is used to support the device and make the use of the device more convenient.

[0024] Refer to Figures 2-4, in a preferred embodiment, the sliding mechanism includes a lead screw 6. The lead screw 6 is rotatably connected to the center inside the processing tower 1. The lead screw 6 is vertically arranged. The bottom end of the lead screw 6 is rotatably connected to the inner bottom of the processing tower 1. The top end of the lead screw 6 is disposed at the bottom of the condensation plate 301. The lead screw 6 is rotatably sleeved inside the cross plate 4. The cross plate 4 cooperates with the lead screw 6. Two slide ways 103 are vertically and fixedly connected inside the processing tower 1. Two limiting rods 401 are horizontally and fixedly connected to the surface of the cross plate 4. The two ends of the two limiting rods 401 away from each other are respectively slidably connected inside the two slide ways 103. A rotating shaft 601 is rotatably connected to the center inside the processing tower 1. The rotating shaft 601 is fixedly connected to the top end of the lead screw 6. A fixed sleeve 302 is sleeved inside the center of the condensation plate 301. The rotating shaft 601 is rotatably sleeved inside the fixed sleeve 302. The top end of the rotating shaft 601 is rotatably sleeved inside the top of the processing tower 1. A motor 602 is installed at the top of the processing tower 1. The output end of the motor 602 is fixedly connected to the top end of the rotating shaft 601, which is used to limit the two piston plates 403 to slide up and down inside the processing tower 1, and at the same time, it will also squeeze the water inside the two receiving boxes 104.

[0025] Refer to Figure 3 and Figure 4 , in a preferred embodiment, two sliding rods 5 are rotatably connected inside the processing tower 1. The two sliding rods 5 are both horizontally arranged. The two sliding rods 5 are both slidably connected to the bottom of the condensation plate 301. Support rods 501 are fixedly connected to the bottoms of the two sliding rods 5. A connecting sleeve 502 is rotatably connected to the center inside the processing tower 1. The connecting sleeve 502 is rotatably connected to the bottom of the condensation plate 301. The two ends of the two connecting sleeves 502 close to each other are both fixedly connected to the surface of the connecting sleeve 502. The connecting sleeve 502 is sleeved on the surface of the rotating shaft 601, which is used to rotate the two sliding rods 5, so as to facilitate scraping the water at the bottom of the condensation plate 301, thereby improving the preparation efficiency of C4.

[0026] Refer to Figure 2 , Figure 3 and Figure 5, in a preferred embodiment, the cooling mechanism includes receiving boxes 104. There are two receiving boxes 104, both of which are fixedly connected to the bottom of the treatment tower 1. Both receiving boxes 104 are in communication with the inside of the treatment tower 1. The two receiving boxes 104 respectively correspond to the two piston plates 403, and the two piston plates 403 cooperate with the two receiving boxes 104 respectively. A same U-shaped pipe 7 is arranged at the bottom of the two receiving boxes 104. The two ends of the top of the U-shaped pipe 7 are respectively fixedly connected to the centers of the bottoms of the two receiving boxes 104. One-way valves 701 are installed at both ends of the surface of the U-shaped pipe 7. A connecting pipe 702 is fixedly connected to the surface of the U-shaped pipe 7. The connecting pipe 702 is arranged in an L shape. The top end of the fixing ring 2 is fixedly connected to a bent pipe 703. The upper and lower ends of the protective box 303 are respectively fixedly connected to a water inlet pipe 305 and a water outlet pipe 306. One end of the bent pipe 703 is fixedly connected to the surface of the water inlet pipe 305. The bottom end of the water outlet pipe 306 is fixedly connected to an extension pipe 307, which is used to convey the water inside the two receiving boxes 104, so that the condensed water can be conveyed into the protective box 303, and the cooler 3 is cooled by a plurality of heat dissipation fins 304.

[0027] In the present invention, during actual use, through the provision of the condensation plate 301, it is convenient to condense the moisture contained in the C4 on the surface of the condensation plate 301 when in use, thereby improving the preparation effect of C4. At the same time, the condensed water will be collected, and the device will be cooled, thereby improving the utilization effect of energy. When in use, the mixed oil-water-gas C4 gas can be transported into the processing tower 1 through the intake pipe 101 on the surface of the processing tower 1. Subsequently, the refrigerator 3 is driven. At this time, the refrigerator 3 will cool the surface of the condensation plate 301 and also dissipate heat through a plurality of heat sinks 304. Subsequently, when the C4 with water vapor passes through the inside of the support leg 201, the water vapor inside will be condensed by the condensation plate 301 and remain on the surface of the condensation plate 301. The C4 from which the water vapor has been absorbed will be transported through the outlet pipe 102. Subsequently, the driving motor 602 drives the rotating shaft 601 to rotate. Through the rotating shaft 601, the connecting sleeve 502 and the two support rods 501 will rotate, so that the two sliding rods 5 slide at the bottom of the condensation plate 301, and the water droplets remaining at the bottom of the condensation plate 301 can be scraped off, thereby improving the passability of C4 and also improving the treatment effect of the water vapor in C4. The rotation of the rotating shaft 601 will also drive the lead screw 6 to rotate. Under the restriction of the two limit rods 401, the cross plate 4 will slide downward, and at the same time, the two limit rods 401 and the two connecting columns 402 will also slide downward. When the cross plate 4 slides to the bottom inside the processing tower 1, the two piston plates 403 will squeeze the inside of the two receiving boxes 104, so that the water remaining inside the two receiving boxes 104 is transported through the U-shaped pipe 7 and the connecting pipe 702, and then enters the protection box 303 through the elbow pipe 703 and the water inlet pipe 305. Subsequently, the surfaces of the plurality of heat sinks 304 will be cooled, and the cooled water will be discharged through the extension pipe 307. The sliding of the two piston plates 403 will not slide to the bottom of the two receiving boxes 104, and a certain amount of water will remain inside the receiving boxes 104. After completion, the motor 602 drives the rotating shaft 601 and the lead screw 6 to rotate, so that the cross plate 4 and the piston plate 403 slide upward to their original positions, and then this step can be continued.

[0028] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A process and system for preparing C4, characterized in that, The described C4 preparation process includes: S1: Mix petroleum with dilution steam and rapidly heat it to 800 - 1100 °C in a tubular furnace, with a residence time of only 0.01 - 0.02 seconds; S2: Quench and separation: The reaction product is rapidly cooled to below 550 °C through a quench heat exchanger to terminate the reaction; S3: Then it is separated into a mixed C4 petroleum hydrocarbon gas through a fractionating tower; S4: The mixed C4 petroleum hydrocarbon gas is transported to a C4 treatment tower (1) for separation, and C4 hydrocarbons are obtained from the top of the treatment tower (1); The described preparation device includes: A cooler (3) is installed on the surface of the treatment tower (1). A condensation plate (301) is arranged inside the treatment tower (1). The condensation plate (301) is installed at one end of the surface of the cooler (3). Multiple heat dissipation fins (304) are fixedly connected to the other end of the surface of the cooler (3). A protective box (303) is fixedly connected to the other end of the surface of the cooler (3). The protective box (303) is arranged on the outer surface of the multiple heat dissipation fins (304); A cross - plate (4) is vertically slidably connected inside the treatment tower (1). The cross - plate (4) is horizontally arranged. Two connection columns (402) are vertically and fixedly connected to the bottom of the cross - plate (4). Pistons (403) are fixedly connected to the bottom ends of the two connection columns (402). The treatment tower (1) is provided with a sliding mechanism for sliding the cross - plate (4), and a temperature - lowering mechanism for the cooler (3) is arranged inside the treatment tower (1).

2. The C4 preparation device according to claim 1, characterized in that, A fixed ring (2) is sleeved at the bottom of the treatment tower (1). Multiple support legs (201) are fixedly connected to the surface of the fixed ring (2). An air inlet pipe (101) and an air outlet pipe (102) are fixedly connected to the surface of the treatment tower (1). The air outlet pipe (102) is arranged above the air inlet pipe (101), and the air outlet pipe (102) is arranged above the condensation plate (301).

3. The C4 preparation device according to claim 1, characterized in that, The sliding mechanism includes a lead screw (6). The lead screw (6) is rotatably connected to the center inside the treatment tower (1). The lead screw (6) is vertically arranged. The bottom end of the lead screw (6) is rotatably connected to the inner bottom of the treatment tower (1). The top end of the lead screw (6) is arranged at the bottom of the condensation plate (301). The lead screw (6) is rotatably sleeved inside the cross - plate (4). The cross - plate (4) cooperates with the lead screw (6). Two slideways (103) are vertically and fixedly connected inside the treatment tower (1). Two limit rods (401) are horizontally fixedly connected to the surface of the cross - plate (4). The two ends of the two limit rods (401) away from each other are respectively slidably connected inside the two slideways (103).

4. The C4 preparation device according to claim 3, wherein, A rotating shaft (601) is rotatably connected to the center inside the treatment tower (1). The rotating shaft (601) is fixedly connected to the top end of the lead screw (6). A fixed sleeve (302) is sleeved at the center inside the condensation plate (301). The rotating shaft (601) is rotatably sleeved inside the fixed sleeve (302). The top end of the rotating shaft (601) is rotatably sleeved inside the inner top of the treatment tower (1). A motor (602) is installed on the top of the treatment tower (1). The output end of the motor (602) is fixedly connected to the top end of the rotating shaft (601).

5. The C4 preparation device according to claim 4, characterized in that, Inside the treatment tower (1), two sliding rods (5) are rotatably connected. Both of the two sliding rods (5) are horizontally arranged. Both of the two sliding rods (5) are slidably connected to the bottom of the condensation plate (301). Support rods (501) are fixedly connected to the bottoms of both of the two sliding rods (5). A connecting sleeve (502) is rotatably connected to the center inside the treatment tower (1). The connecting sleeve (502) is rotatably connected to the bottom of the condensation plate (301). One end of each of the two connecting sleeves (502) close to each other is fixedly connected to the surface of the connecting sleeve (502). The connecting sleeve (502) is sleeved on the surface of the rotating shaft (601).

6. The C4 preparation device according to claim 1, characterized in that, The temperature reduction mechanism includes receiving boxes (104). There are two receiving boxes (104). Both of the two receiving boxes (104) are fixedly connected to the bottom of the treatment tower (1). Both of the two receiving boxes (104) are communicated with the inside of the treatment tower (1). The two receiving boxes (104) respectively correspond to two piston plates (403). The two piston plates (403) are respectively matched with the two receiving boxes (104).

7. The C4 preparation device according to claim 6, characterized in that, A U-shaped pipe (7) is arranged at the bottoms of the two receiving boxes (104). Two ends of the top of the U-shaped pipe (7) are respectively fixedly connected to the centers of the bottoms of the two receiving boxes (104). Check valves (701) are installed at both ends of the surface of the U-shaped pipe (7). A connecting pipe (702) is fixedly connected to the surface of the U-shaped pipe (7). The connecting pipe (702) is arranged in an L shape. The top end of the 7-fixed ring (2) is fixedly connected to a bent pipe (703).

8. The C4 preparation device according to claim 7, wherein A water inlet pipe (305) and a water outlet pipe (306) are respectively fixedly connected to the upper and lower ends of the protective box (303). One end of the bent pipe (703) is fixedly connected to the surface of the water inlet pipe (305). The bottom end of the water outlet pipe (306) is fixedly connected to an extension pipe (307).

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