A device and method for preventing salt formation and corrosion in a stripping tower of an oil refining unit
A technology for oil refining equipment and strippers, applied in the direction of anti-corrosion during distillation, biological raw materials, etc., can solve problems such as poor improvement of corrosion problems, increased operating costs, etc., and achieve good anti-salt corrosion effects, eliminate influence, and low cost effect
Active Publication Date: 2022-07-05
PETROCHINA CO LTD
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Problems solved by technology
[0006] The solution provided by the existing technology not only has a poor effect on improving the corrosion problem, but also significantly increases the operating cost
Method used
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[0060]In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0061] On the one hand, an embodiment of the present invention provides a device for preventing salt formation and corrosion in a stripper of an oil refining unit, as shown in the attached figure 1 As shown in the figure, the anti-salt corrosion device for the stripping tower of the oil refining unit includes: a stripping tower 1, a tower top reflux tank 2, a circulating pump 3, a filter 4, a booster pump 5, a gas-liquid mixer 6, an oil-water separator 7 ;
[0062] The tower top outlet of the stripping tower 1, the tower top reflux tank 2, and the inlet of the circulating pump 3 are communicated in turn;
[0063] The outlet of the circulating pump 3, the filter 4, the booster pump 5, the gas-liquid mixer 6, and the oil-water separator 7 are connected in ...
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Abstract
The invention discloses a device and method for preventing salt formation and corrosion of a stripping tower of an oil refining unit, and belongs to the field of petrochemical industry. The device includes: a stripping tower, a tower top reflux tank, a circulating pump, a filter, a booster pump, a gas-liquid mixer, and an oil-water separator; the top outlet of the stripping tower, the tower top reflux tank, and the inlet of the circulating pump are sequentially The outlet of the circulating pump, the filter, the booster pump, the gas-liquid mixer, and the oil-water separator are connected in sequence; the outlet of the circulating pump, the gas-phase outlet of the gas-liquid mixer, and the oil-phase outlet of the oil-water separator are all connected to the stripper. The upper return port is connected. The device eliminates the influence of the corrosive medium on the stripping tower of the refinery device to the greatest extent, and obtains a good effect of preventing salt formation and corrosion, and has a low cost.
Description
technical field [0001] The invention relates to the field of petrochemical industry, in particular to a device for preventing salt formation and corrosion in a stripping tower of an oil refining device and a processing method. Background technique [0002] Residual oil hydrotreating unit processes high-salt and high-metal-containing residual oil to provide raw materials for catalytic cracking units and increase the production of high value-added products. While it has become an important measure for refineries to improve economic benefits, its stripper is severely salted. Clogging and equipment corrosion issues are a growing concern. [0003] The residual oil carries elements such as N, S, Cl and a certain amount of solid impurities. After entering the reactor, it is easy to react at high temperature to generate NH 3 , H 2 S, HCl and other products, at low temperature, NH 3 It reacts with HCl to generate NHCl ammonium salt particles, and the ammonium salt particles are ea...
Claims
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IPC IPC(8): C10G7/10
CPCC10G7/10Y02P30/20
Inventor 曾庆峰孙会东王新平邢定峰张晓华吕青龙边刚月李军赵金海孙宝文杨维军魏海国余绩庆魏江东王晓荣
Owner PETROCHINA CO LTD