Light C4 comprehensive utilization device
By adding on-site valves to the light carbon 4 and heavy carbon 4 decanting area pipelines, the light carbon 4 and heavy carbon 4 are mixed, the parking problem caused by the light carbon 4 holding tank in the MTBE production device is solved, and the comprehensive utilization of resources and the improvement of economic benefits are achieved.
Patent Information
- Application Number
- CN202422379091.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In the existing MTBE production equipment, the light carbon four-carb tank causes the device to stop, affecting long-term operation and low economic benefits, and unable to effectively utilize butene-2.
By adding on-site valves to the light carbon 4-tank area pipeline and the heavy carbon 4-tank area pipeline, and connecting them through pipelines, the light carbon 4-tank area mixes with the heavy carbon 4-tank area to form a new heavy carbon 4-product, solving the problem of light carbon 4-tank can and realizing comprehensive resource utilization.
The comprehensive utilization of light carbon 4 has been achieved, the equipment has been avoided, the economic benefits have been improved, and the rational utilization of resources has been achieved.
Smart Images
Figure CN223112358U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical production equipment, and particularly relates to a device for comprehensive utilization of light C4. Background Art
[0002] Since the total C4 component content in light C4 and heavy C4 is not less than 95% (m / m), where heavy C4 mainly contains heavy C4 components such as butene-2 and n-butane, and the heavy C4 fraction is a combustible gas, and light C4 mainly contains light C4 components such as isobutane, which are usually stored and transported in liquid state. Since the device cannot further effectively utilize butene-2, the remaining heavy C4 and remaining light C4 are sold together as liquefied gas.
[0003] In the existing MTBE (methyl tert-butyl ether) production device and butene-1 combined device, light C4 is taken out from the top of the first refining tower and sent to the storage and transportation center during production, and heavy C4 is taken out from the bottom of the second refining tower and sent to the storage and transportation center. However, according to the actual market situation, the price of the by-product light C4 of the device is relatively low and it is not easy to sell externally. The device will stop due to light C4 accumulation in the tank, which affects the long-term operation of the device and also affects the company's benefits. Summary of the Utility Model
[0004] Aiming at the above existing problems, the purpose of the utility model is to provide a device for comprehensive utilization of light C4, which can comprehensively utilize the light C4 products generated during the operation of the MTBE production device, completely solve the problem of device shutdown caused by light C4 accumulation in the tank, and at the same time improve economic benefits. It is a safe and reliable device for comprehensive utilization of light C4.
[0005] The technical solution of the utility model is: a device for comprehensive utilization of light C4, comprising:
[0006] A pipeline for light C4 to the tank area, which at least has a first on-site valve and a second on-site valve. The first on-site valve is connected to an external device and is used to receive light C4 generated by the external device.
[0007] A pipeline for heavy C4 to the tank area, which at least has a third on-site valve and a fourth on-site valve. The third on-site valve is connected to an external device and is used to receive heavy C4 generated by the external device. The fourth on-site valve is connected to the second on-site valve through a pipeline and is used to receive the light C4 transmitted by the second on-site valve in the pipeline for light C4 to the tank area and mix it with heavy C4.
[0008] Further, the pipeline for light C4 to the tank area also has a fifth on-site valve, and the fifth on-site valve is connected to an external light C4 storage tank area.
[0009] Further, the pipeline for heavy C4 to the tank area also has a sixth on-site valve, and the sixth on-site valve is connected to an external heavy C4 storage tank area.
[0010] Further, the first on-site valve is connected to the output end of an external first refining tower reflux tank through a reflux pump, and is used to collect light C4 generated by the first refining tower reflux tank.
[0011] Further, the third on-site valve is connected to an external second refining tower, and is used to receive heavy C4 generated by the second refining tower.
[0012] The working method of the present utility model: The light C4 generated by the external first refining tower is stored in the first refining tower reflux tank. Open the first on-site valve and the second on-site valve, close the fifth on-site valve, use the reflux pump to transport the light C4 in the first refining tower reflux tank into the light C4 pipeline to the tank farm, and open the third on-site valve and the fourth on-site valve, so that the heavy C4 generated by the second refining tower enters the heavy C4 pipeline to the tank farm, and the light C4 in the light C4 pipeline to the tank farm enters the heavy C4 pipeline to the tank farm to be mixed, obtaining a new heavy C4 product. Open the sixth on-site valve and transport the new heavy C4 product to an external heavy C4 storage tank area.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: A light C4 comprehensive utilization device provided by the present utility model adds a second on-site valve to the light C4 pipeline to the tank farm, adds a fourth on-site valve to the heavy C4 pipeline to the tank farm, and connects the second on-site valve and the fourth on-site valve through a pipeline, enabling the light C4 in the light C4 pipeline to the tank farm to enter the heavy C4 pipeline to the tank farm for mixing, obtaining a new heavy C4 product. The structure of the present utility model is reasonable, can comprehensively utilize the light C4 products produced during the production operation of the MTBE production device, completely solve the problem of device shutdown caused by light C4 tank congestion, increase economic benefits and realize the comprehensive utilization of resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.
[0015] Wherein, 1 - light C4 pipeline to the tank farm, 11 - first on-site valve, 12 - second on-site valve, 13 - fifth on-site valve, 2 - heavy C4 pipeline to the tank farm, 21 - third on-site valve, 22 - fourth on-site valve, 23 - sixth on-site valve, 3 - reflux pump, 4 - first refining tower reflux tank, 5 - second refining tower. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The following combines the attached Figure 1, a detailed description of the specific embodiments of the present utility model will be given. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.
[0017] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0018] Example: As Figure 1 shown, a light C4 comprehensive utilization device includes a light C4 pipeline 1 to the tank farm and a heavy C4 pipeline 2 to the tank farm. Among them:
[0019] The light C4 pipeline 1 to the tank farm has a first on-site valve 11 and a second on-site valve 12. The first on-site valve 11 is connected to an external device and is used to receive light C4 generated by the external device. The light C4 pipeline 1 to the tank farm also has a fifth on-site valve 13, and the fifth on-site valve 13 is connected to an external light C4 storage tank area;
[0020] The heavy C4 pipeline 2 to the tank farm has a third on-site valve 21 and a fourth on-site valve 22. The third on-site valve 21 is connected to an external device and is used to receive heavy C4 generated by the external device. The fourth on-site valve 22 is connected to the second on-site valve 12 through a pipeline and is used to receive the light C4 transmitted by the light C4 pipeline 1 to the tank farm through the second on-site valve 12 and mix it with the heavy C4. The heavy C4 pipeline 2 to the tank farm also has a sixth on-site valve 23, and the sixth on-site valve 23 is connected to an external heavy C4 storage tank area.
[0021] Preferably, the first on-site valve 11 is connected to the output end of an external first rectification tower reflux tank 4 through a reflux pump 3 and is used to collect the light C4 generated by the first rectification tower reflux tank 4; the third on-site valve 21 is connected to an external second rectification tower 5 and is used to receive the heavy C4 generated by the second rectification tower 5.
[0022] The working method of the above embodiment is as follows: The light C4 generated by the external first refining tower is stored in the reflux drum 4 of the first refining tower. Open the first on-site valve 11 and the second on-site valve 12, close the fifth on-site valve 13, and use the reflux pump 3 to transport the light C4 in the reflux drum 4 of the first refining tower to the light C4 pipeline 1 to the tank farm. And open the third on-site valve 21 and the fourth on-site valve 22 to make the heavy C4 generated by the second refining tower 5 enter the heavy C4 pipeline 2 to the tank farm, and make the light C4 in the light C4 pipeline 1 to the tank farm enter the heavy C4 pipeline 2 to the tank farm for mixing to obtain a new heavy C4 product. Open the sixth on-site valve 23 and transport the new heavy C4 product to the external heavy C4 storage tank area.
[0023] Experimental example:
[0024] The mixed heavy C4 indexes produced in the above embodiment are compared and analyzed with the designed heavy C4 indexes, and the results are shown in Table 1:
[0025] Table 1 Comparison chart of mixed heavy C4 and designed heavy C4 indexes
[0026] Design index of heavy C4 Index of heavy C4 after mixing Total C4 % (m / m) ≥95 99.19 C3 and below % (m / m) ≤1 0.66 C5 and above % (m / m) ≤4 0.34
[0027] Experimental conclusion: It is feasible to mix the light C4 generated by the MTBE production unit into the heavy C4 and sell it as a heavy C4 product.
[0028] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.
Claims
1. A light C4 comprehensive utilization device, characterized in that Including: The light C4 pipeline to the tank farm (1) has at least a first on-site valve (11) and a second on-site valve (12). The first on-site valve (11) is connected to an external device and is used to receive light C4 generated by the external device. The heavy C4 pipeline to the tank farm (2) has at least a third on-site valve (21) and a fourth on-site valve (22). The third on-site valve (21) is connected to an external device and is used to receive heavy C4 generated by the external device. The fourth on-site valve (22) is connected to the second on-site valve (12) through a pipeline and is used to receive the light C4 transmitted by the light C4 pipeline to the tank farm (1) through the second on-site valve (12) and mix it with the heavy C4.
2. The integrated utilization device for light C4 according to claim 1, characterized in that, The light C4 pipeline to the tank farm (1) also has a fifth on-site valve (13), and the fifth on-site valve (13) is connected to an external light C4 storage tank area.
3. The integrated utilization device for light C4 as claimed in claim 1, wherein, The heavy C4 pipeline to the tank farm (2) also has a sixth on-site valve (23), and the sixth on-site valve (23) is connected to an external heavy C4 storage tank area.
4. The integrated light C4 utilization device according to claim 1, characterized in that, The first on-site valve (11) is connected to the output end of an external first refining tower reflux drum (4) through a reflux pump (3) and is used to collect the light C4 generated by the first refining tower reflux drum (4).
5. The integrated utilization device for light C4 as claimed in claim 1, wherein, The third on-site valve (21) is connected to an external second refining tower (5) and is used to receive the heavy C4 generated by the second refining tower (5).