Coal tar hydrogenation and fractionation device
A fractionation device and technology for coal tar, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of uneven distribution of hydrogen, high energy consumption of equipment, low oil production efficiency, etc. The effect of improving oil production efficiency and increasing stability
Inactive Publication Date: 2012-07-25
NINGBO JINYUANDONG PETROCHEM ENG TECH
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Problems solved by technology
The inventive method can produce high-quality clean gasoline and diesel products with low-quality coal tar, but the production system assembled according to this method often has the phenomenon of uneven hydrogen distribution and insufficient heat load, and the equipment consumes a lot of energy and the oil production efficiency is low. low, so further improvement is needed
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[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0014] Such as figure 1 As shown, the coal tar hydrogenation fractionation device of the present embodiment includes a heating furnace 11 and a decompression tower 12 that carry out pretreatment of high-temperature coal tar before hydrogenation, and the heating furnace 11 and the decompression tower 12 are connected by pipelines. The decompression tower 12 is provided with a tar light oil outlet 121, a phenol oil outlet 122, a naphthalene oil outlet 123, a washing oil outlet 124, anthracene oil outlet 125, an asphalt oil outlet, etc. from top to bottom. Port 126, wherein the asphalt oil outlet 126 is located at the bottom of the decompression tower 12 and communicates with the outside world, while the tar light oil outlet 121, phenol oil outlet 122, naphthalene oil outlet 123, washing oil outlet 124 , anthracene oil outlet 125 are respectivel...
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The invention discloses a coal tar hydrogenation and fractionation device. The coal tar hydrogenation and fractionation device is characterized in that a hydrogen outlet (51) of a first high-pressure separator (5) is communicated with a first hydrogenation device through a first circulating hydrogen compressor (81) through a pipe; a hydrogen outlet (510) of a second high-pressure separator (50) is communicated with a second hydrogenation device through a second circulating hydrogen compressor (81) through a pipe; a first feed heating furnace (91) is arranged on the first hydrogenation device; and a second feed heating furnace (92) is arranged on a pipe which communicates an un-converted oil outlet (75) of a fractionating tower (7) with the second hydrogenation device. The coal tar hydrogenation and fractionation device has the advantages of enough heat load, balanced hydrogen distribution, capability of performing hydrorefining and hydrocracking at the same time, obviously low energy consumption of a production system, and obvious increase of oil production efficiency.
Description
technical field [0001] The invention relates to the technical field of manufacturing coal tar cracking equipment, in particular to a coal tar hydrogenation fractionation device. Background technique [0002] There is an existing Chinese invention patent with the patent number CN200610028263.9 titled "A Coal Tar Hydrocracking Method" which discloses a coal tar hydrocracking method, the main feature of which is that coal tar and hydrogen are mixed into the hydrogenation pretreatment reaction The resulting oil enters the hot high-pressure separator, and the light oil and water obtained by further separation of the upper stream flow out of the system, and the hydrogen gas obtained is recycled, and the lower stream continues to mix with hydrogen and enters the hydrocracking reactor, where hydrocracking produces The product enters the high-pressure separator, and the separated hydrogen is recycled. The obtained liquid is obtained in the fractionating tower to obtain gas, gasoline,...
Claims
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Inventor 项裕桥杨才勇
Owner NINGBO JINYUANDONG PETROCHEM ENG TECH