Two-phase hydrogenation combination method
A combined method and additive technology, which is applied in the fields of hydrogenation treatment process, petroleum industry, and hydrocarbon oil treatment, can solve the problems of increasing equipment investment and operating costs, suppression of hydrogenation reaction, difficulty in reaching the standard of impurity removal rate, etc., and achieves saving Investment and operating costs, improving the removal rate of impurities, and avoiding the effect of inhibiting reactions
Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When this method is used for secondary processing of middle distillates, the removal rate of impurities is difficult to meet the standard
In the existing two-phase hydrogenation technology, it is difficult to effectively remove the hydrogen sulfide dissolved in the oil phase, and it accumulates in the reaction system, which seriously inhibits the hydrogenation reaction.
Although it can be removed by methods such as steam stripping, because it is in a high-temperature and high-pressure system, it will also increase equipment investment and operating costs.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0029] This example is an embodiment of the two-phase hydrogenation combined method, and the schematic diagram of the operation flow refers to the appendix figure 1 .
[0030] The properties of the raw materials used in the test are shown in Table 1. The traditional hydrogenation reactor and the two-phase hydrogenation reactor use the same catalyst, and the catalyst properties are shown in Table 2. The reaction conditions of the traditional hydrogenation unit and the two-phase hydrogenation unit and the properties of the produced oil are shown in Table 3.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a two-phase hydrogenation combination method. The method combines a traditional gas-phase circulating hydrogenation technology and a two-phase hydrogenation technology and processes different raw materials according to advantages of each of the technologies. The middle part of a high-pressure separator of a traditional gas-phase circulating hydrogenation unit is provided with a partition plate to divide the high-pressure separator into a gas-liquid separating chamber and a hydrogen dissolution chamber. Middle distillate oil which is difficult to remove impurities is processed by adoption of the gas-phase circulating hydrogenation technology. Produced materials are fed into the gas-liquid separation chamber to perform gas-liquid separation. The separated liquid phase is fed into a distillation system. The separated gas phase is lead to the bottom of the hydrogen dissolution chamber through a pipeline, and is subjected to countercurrent contact with raw materials of the two-phase hydrogenation unit and circulating oil which are fed from the upper part of the hydrogen dissolution chamber. The hydrogen-dissolved raw materials of the two-phase hydrogenation unit and the hydrogen-dissolved circulating oil are fed into a two-phase hydrogenation reactor to perform hydrogenation. Compared with the prior art, the method can effectively solve a problem of hydrogenation inhibition caused by accumulated hydrogen sulfide in the two-phase hydrogenation unit.
Description
technical field [0001] The invention relates to a combined two-phase hydrogenation method, in particular to a combined hydrogenation method of distillate oil feedstocks with different qualities. Background technique [0002] With the continuous enhancement of people's awareness of environmental protection, environmental protection laws and regulations have stricter requirements on engine exhaust emissions, and various fuel standards require more stringent S and N content. At the same time, due to the continuous increase of crude oil production and the continuous reduction of conventional crude oil reserves, the deterioration of crude oil is becoming more and more serious. The content has also increased accordingly. How to process the middle distillate with high impurities such as sulfur and nitrogen into products that meet the requirements of environmental protection is an important problem faced by each refinery. [0003] Hydrogenation is the most cost-effective solution f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C10G67/02
Inventor 王喜彬郭蓉曾榕辉蒋立敬
Owner CHINA PETROLEUM & CHEM CORP