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Intermediate product hot tank feeding method and system thereof

A technology of feeding system and feeding method, which is applied in the direction of separation method, chemical instrument and method, and treatment of hydrocarbon oil, etc. It can solve problems such as difficult operation and adjustment, no mention of hot tank feeding method, lack of thermal flexibility in the process, etc. , achieve the effect of saving circulating water, inhibiting the formation of colloid, good safety and reliability

Active Publication Date: 2018-07-13
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Chinese patent CN103363295 A discloses "a thermal feeding method for process product diesel oil". This invention is to establish a thermal feeding distribution station between the upstream and downstream devices, and concentrate the thermal output of the same type of logistics to the distribution station. , focusing on the auxiliary process for handling accidents, which is improved compared to the conventional method of direct supply of hot materials, but the problem is that the process lacks thermal flexibility, and the operation fluctuation and equipment failure of the upstream device directly interfere with the downstream device, making it difficult to achieve fine operation Adjustment, under the operation fluctuation and accident state of the upstream device, it must be stored in a cold tank after cooling
[0007] Chinese patent CN204455008 U has announced "a kind of diesel thermal feed device", which discloses that on the basis of the traditional thermal feed direct supply method, a thermal discharge line is added and the combined control of the liquid level of the upstream device is added. The technology also does not mention the hot tank feed method
[0008] To sum up, in the existing feeding technology, the two methods of cold tank feeding and hot material direct feeding coexist, both of which have shortcomings

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  • Intermediate product hot tank feeding method and system thereof
  • Intermediate product hot tank feeding method and system thereof

Examples

Experimental program
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Embodiment 2

[0064] The difference from Example 1 is that the intermediate product of the upstream device in this example is the vacuum gas oil produced by the atmospheric and vacuum device, the catalytic heavy cycle oil produced by the catalytic device, and the coker gas oil produced by the coking device, and the distillation range is 350-500°C. The downstream unit is a wax oil hydrotreating and upgrading unit with an operating pressure of 13.8MPa (table), which removes sulfur and nitrogen impurities, and deeply saturates the polycyclic aromatic hydrocarbons in the wax oil components to generate single-ring aromatic hydrocarbons, which are used as high-quality Catalytic raw material.

[0065] The method of using the device of this embodiment to carry out the hot tank feeding of the wax oil component can be divided into a hot tank feeding and discharging process and a volatile gas recovery process, wherein,

[0066] The described hot tank feeding and discharging process comprises the step...

Embodiment 3

[0077] The difference from Example 2 is that the upstream unit in this example is an atmospheric unit, a catalytic unit and a coking unit, which produce atmospheric diesel, catalytic diesel and coked diesel respectively, with a distillation range of 180-365°C, and the downstream units are Diesel hydrotreating unit, hydrogenation pressure 10.0MPa (table), removal of sulfur, nitrogen impurities and deep saturation of aromatics, production of national V vehicle diesel.

[0078] The method of using the device of this embodiment to carry out the hot tank feeding of diesel components can be divided into a hot tank feeding and discharging process and a volatile gas recovery process, wherein,

[0079] The described hot tank feeding and discharging process comprises the steps:

[0080] (1) The diesel component of the intermediate product from the upstream device enters the static mixer at a temperature of 155°C without air cooling or water cooling, and makes the temperature and propert...

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Abstract

The invention provides an intermediate product hot tank feeding method. The feeding method comprises a hot tank feeding and discharging process and a volatile gas recycling process. According to the specific scheme, the feeding method comprises the steps that intermediate products produced by an atmospheric distillation unit, a catalyzing device and a coking unit are directly classified to enter adiesel oil hot tank and a wax oil hot tank to be subjected to homogenizing, temperature equalization, quantity averaging and purifying without being subjected to air cooling and water cooling, nitrogen gas is injected into the hot tanks so that oil is prevented from being in contact with the air, vaporized moisture and volatile oil gas are subjected to recycling treatment, the moisture, light oiland light hydrocarbon are removed, and the hot materials enter a downstream device at the temperature of 100-180 DEG C. According to the intermediate product hot tank feeding method, the high temperature hot tanks are arranged between upstream devices and the downstream device, the feeding method has the advantages of cold tank feeding and hot material direct supply feeding, the influence to operation caused by fluctuation and operation failures of the upstream devices and the downstream device can be eliminated, hot feeding can be achieved, at the same time, purifying and stable feeding canbe conducted, and the effects of safety, stability and energy conservation are achieved. The invention further provides a system for implementing the method.

Description

technical field [0001] The invention belongs to the technical field of petrochemical energy saving, and in particular relates to a method for feeding an intermediate product into a hot tank, and also relates to a system for realizing the method. Background technique [0002] For petrochemical refineries, energy consumption is directly related to the overall operation level and economic benefits of refineries. The thermal combination between the devices is to take two or more sets of upstream and downstream devices as a whole, and carry out the matching of "high heat for high use, low heat for low use" according to the principle of "equal temperature and cascade utilization", so as to reduce the loss of effective energy in the process and save Circulating water and fuel gas can generally save energy by 20-40%, so it is an effective way to save energy. [0003] Hot feed is the bond of thermal integration, which refers to the material supply relationship between devices. The p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/00C10G47/00C10G49/00B01D53/75B01D53/78B01D53/48
CPCB01D53/48B01D53/75B01D53/78C10G45/00C10G47/00C10G49/00
Inventor 胡廷平李云雁程先忠
Owner WUHAN POLYTECHNIC UNIVERSITY