Environment-friendly rubber oil and its preparation method and device
A kind of environmental protection rubber oil, the technology of preparation equipment, applied in the direction of processing hydrocarbon oil, petroleum industry, only multi-stage serial refining process, etc., can solve the problem of low aromatic hydrocarbon content of environmental protection oil, carcinogens are difficult to pass, low yield of environmental protection oil, etc. problem, to achieve the effect of increasing aromatic carbon rate, simple composition and simple preparation method
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Embodiment 1
[0042] A preparation device suitable for laboratory-scale environment-friendly rubber oil, which includes:
[0043] The first extraction tower 1, the second extraction tower 2, the raw oil tank 3 and the solvent tank 4;
[0044] The top discharge port 11 of the first extraction tower 1 communicates with the lower feed port 21 of the second extraction tower 2 through the first pipeline, and the top discharge port 22 of the second extraction tower 2 communicates with the refined liquid through the second pipeline. The solvent recovery unit 5 communicates; the outlet 41 of the solvent tank 4 communicates with the upper feed port 12 of the first extraction tower 1 through the third pipeline; the outlet 31 of the raw oil tank 3 communicates with the bottom of the first extraction tower through the fourth pipeline The feed port 13 is connected; the first mass flow meter 60 is arranged on the first pipeline;
[0045] The first opening 42 and the second opening 43 are sequentially ar...
Embodiment 2
[0056] In this embodiment, the device in Implementation 1 is used to prepare environment-friendly rubber oil, wherein the solvent is furfural, and the raw material oil is extracted oil extracted from furfural by subtracting four-line distillate oil from a refinery, wherein the PCA content of the raw material oil is 23wt%, and benzo [a] The content of pyrene is 21 μg / g, and the content of 8 carcinogenic aromatic hydrocarbons is 242 μg / g.
[0057] Start the third metering pump 66, the first metering pump 61 and the fourth metering pump 67 in turn, start the second metering pump 62; stabilize the flow of the second metering pump 62 first, then control the flow of the third metering pump 66 (second path Solvent) and the flow rate ratio of the second metering pump 62 is 0.6:1 (m / m), the flow rate (first road solvent) of the control first metering pump 61 and the flow ratio of the second metering pump 62 are 0.2:1 (m / m), the ratio of the flow rate of the fourth metering pump 67 (th...
Embodiment 3
[0062] This embodiment adopts the same device, raw material oil and solvent (furfural) as in embodiment 2, and compared with embodiment 2, only the operating conditions (solvent ratio, temperature gradient) are changed.
[0063] Consistent with Embodiment 1, first stabilize the flow rate of the second metering pump 62, then regulate and control the flow rate of the third metering pump 66, the first metering pump 61 and the fourth metering pump 67, so that the mass ratio of the second road solvent to the raw material, the first The mass ratio of solvent to raw material in the first path and the mass ratio of solvent to raw material in the third path are: 0.3:1 (m / m), 0.4:1 (m / m), and 1.2:1 (m / m).
[0064] The temperature of the first extraction tower 1 is controlled to be 50° C. at the upper feed port and 30° C. at the lower feed port, the first refined liquid is obtained from the top discharge port 11 , and the first extracted liquid is obtained from the bottom discharge port 1...
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