Delayed coking method
A delayed coking method and coke technology, which are applied in the petroleum industry, processing hydrocarbon oil, etc., can solve the problems of complex process, coking of heating furnace tubes, increased operating costs and procedures, and achieve simple process and reduce oil and gas partial pressure. , The effect of saving operating costs and processes
Active Publication Date: 2013-01-30
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0004] The purpose of the present invention is to provide a delayed coking method to solve the problems of the existing delayed coking methods that can generate fine particle coke in the coke drum, which are easy to cause coking of the heating furnace tube, the process is relatively complicated, and various additives are used. Problems such as increasing operating costs and processes
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[0049] Three groups of tests were carried out on the delayed coking medium-scale test device, namely Examples 1 to 3. For the flow chart of the test device, see figure 1 . In addition, a comparative test (comparative example) has also been done; figure 1 The difference of the flow shown is that the static mixer 2 and the oxidation tank 3 are not provided, and the oxidant 11 is not added to the hot stream; the hot stream flows out of the heating furnace 1 and directly enters the first coke tower 4 or the second coke tower 5 . The raw material oil 9 used in Comparative Example, Example 1, Example 2 and Example 3 is the same residual oil feed (its properties are shown in Table 1), and the feed rate is 6kg / h.
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Abstract
The invention discloses a delayed coking method to solve problems comprising easy heating furnace tube coking and complex process of present delayed coking methods which can generate fine granule coke in a coke tower. The method comprises the following steps: 1, mixing raw oil (9) with cycle oil, allowing the obtained oil mixture to enter a heating furnace (1), heating the oil mixture in the heating furnace, and allowing a hot material flow to enter a static mixer (2); 2, letting an oxidant (11) into the static mixer, mixing the hot material flow with the oxidant in the static mixer, and allowing the mixed hot material flow to enter an oxidation tank (3); 3, letting high-temperature water vapor (18) into the oxidation tank, carrying out oxidation and condensation reactions of the hot material flow and the oxidant in the oxidation tank, and allowing the oxidized and condensed hot material flow to enter a coke tower; and 4, coking the oxidized and condensed hot material flow in the coke tower. The above scheme is mainly used for delayed coking technologies which can generate the fine granule coke in the coke tower in the petroleum refining field.
Description
technical field [0001] The invention relates to a delayed coking method in the field of petroleum refining, in particular to a delayed coking method capable of generating fine particle coke in a coke tower. Background technique [0002] The processing of heavy crude oil is still dominated by the decarbonization process, and the delayed coking process has the advantages of strong raw material adaptability, thorough decarbonization, simple process, mature technology, and low equipment investment, and has become one of the important means of deep processing of heavy oil. The main process of the traditional delayed coking process is: the high-temperature hot stream from the heating furnace enters the coke tower from the bottom of the coke tower through the oil transfer line, and the coking reaction is carried out in the coke tower. The oil gas generated by the reaction escapes from the top of the tower and goes to the coking fractionation tower for fractionation, mainly into cok...
Claims
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Inventor 陈小民李和杰黄新龙秦如意王洪彬王宝石刘淑芳牛风宾
Owner CHINA PETROLEUM & CHEM CORP