Short-process circulating method of solvent oil for direct coal hydrogenation oil preparation process
A reaction process and short process technology, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, etc., and can solve the problems of unreported, small output, low cracking conversion rate, etc.
Active Publication Date: 2018-06-12
洛阳瑞华新能源技术发展有限公司
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Problems solved by technology
[0021] ②In the high-pressure stirred tank reaction, the gas phase reaction product can quickly leave the liquid phase and enter the upper gas phase, and almost no longer contact with the liquid phase. However, industrial equipment cannot do this anyway, and cannot set up enough intermediate Gas-liquid separator, to separate the gas phase products in time; it can only be used for approximate operation;
[0051] ④ The stable reaction process of hydrogenation solvent hydrogenation RX0 is usually a process with a low cracking conversion rate. Conventional gaseous hydrocarbons such as CH 4 、C 2 、C 3 、C 4 The output is small
[0054] Method of the present invention has no report
Method used
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Embodiment 1
[0414] The coal hydrogenation direct liquefaction process of 250 tons / hour raw coal powder adopts the combination method of the pre-solvent oil hydrogenation stabilization reaction process R30 of the present invention and the coal hydrogenation oil production reaction process R10, and the operating conditions are as follows:
[0415] (1) In the oil-coal slurry preparation process M10, the long-process hydrogen-supplying solvent LR-DS and coal powder SF are made into oil-coal slurry R10F according to a weight ratio of 1:1, and the solid concentration of the coal slurry is 40-50% by mass;
[0416] (2) In the reaction process R10 of coal hydrogenation to oil, the reaction temperature is 410-455°C, the reaction pressure is 18-20MPa, the gas-liquid volume ratio is 700-800NL / kg, and the amount of liquefaction catalyst added is 1.5% of the weight of dry coal powder ~2% by mass, ensuring that the gas phase hydrogen sulfide volume concentration in the reaction space is greater than 0.15...
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A short-process circulating method of solvent oil for a direct coal hydrogenation oil preparation process is characterized in that hydrocarbon oil of hot polymer gas R10P-HS-V of a product R10P of thedirect coal hydrogenation oil preparation process R10 is converted into a R30P containing product through an online solvent oil hydrogenation modification reaction process R30, and the R30P containing product can be separated into products R30P containing gas phase R30P-V and oil phase R30P-L; at least part of liquid containing the oil phase R30P-L enters R10 to be used as a short-process circulating oxygen supplying agent SR-LBDS, and thus the 'rich activated hydrogen' reaction condition is obtained with low cost; warm high polymer oil R10P-MS-L of R10P-HS-V is pressurized and then is fed into the product obtained by front-loading R30 and finally enters R10 in a self-pressurizing manner, and the process is simple; the R10 can be high-concentration coal oil slurry; hydrogen supplying solvents can be injected by batch and class in the pre-hydrogenation stage and the inter-stage gas-liquid separation process; and the product is hydrogen extracting type high polymer. Therefore, the method is particularly suitable for large-sized coal liquefying devices.
Description
technical field [0001] The invention relates to a short-process circulation method of solvent oil used in the reaction process of direct coal hydrogenation to oil production, wherein the hydrocarbon oil in the hot high fraction gas R10P-HS-V of the R10 product R10P in the reaction process of coal hydrogenation direct oil production passes through the online solvent oil The hydrogenation modification reaction process R30 is converted into a product containing R30P which is separated into a product R30P containing a gas phase R30P-V and an oil phase R30P-L, and at least a part of the stream containing an oil phase R30P-L enters R10 as a short-flow cycle hydrogen supply agent SR- LBDS, low-cost production of "rich active hydrogen" reaction conditions; R10P-HS-V's high-temperature high-separation oil R10P-MS-L is pressurized, and then enters the front R30, and the product is self-pressurized into R10, and the process is more concise; R10 can be used with high-concentration oil-coa...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/44C10G2300/70
Inventor 何巨堂
Owner 洛阳瑞华新能源技术发展有限公司