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Reactor internal-part with high light oil yield, low back-mixing and long-term operation and technological method thereof

A process method and long-term technology, applied in the petroleum industry, cracking, non-catalytic thermal cracking, etc., can solve the problems of back-mixing of reaction materials, affecting conversion rate, and easy formation of dead zones, etc., to reduce back-mixing and increase light oil Yield, effect of improving flow rate radial distribution and residence time distribution

Active Publication Date: 2015-05-27
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the visbreaker reactors in use use plate trays, and dead zones are easily formed in the internals, resulting in serious local coking. The uneven distribution of flow rate leads to back-mixing of the reaction materials along the axis of the reactor, which affects the conversion rate.

Method used

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  • Reactor internal-part with high light oil yield, low back-mixing and long-term operation and technological method thereof
  • Reactor internal-part with high light oil yield, low back-mixing and long-term operation and technological method thereof
  • Reactor internal-part with high light oil yield, low back-mixing and long-term operation and technological method thereof

Examples

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Effect test

Embodiment 1

[0027] Embodiment 1: as figure 1 , figure 2 , image 3 As shown, a high light oil yield, low back-mixing and long-period operation reactor internals are composed of odd-numbered plates 1 and even-numbered plates 2, and odd-numbered plates 1 and even-numbered plates 2 are arranged in sequence in reactor 3; the cross-section of odd-numbered plates 1 It is in the shape of a "V", and the two vertical section lines of the odd-numbered board 1 form a certain angle; There is a gap 5 between the outer edge and the outer edge of the even-numbered board 2 and the tower body, the first central opening 4 of the odd-numbered board 1 is smaller than the second central opening 7 of the even-numbered board 2, the gap between the odd-numbered board 1 is greater than the gap between the even-numbered board 2, and the reaction The raw oil passes through the odd-numbered plate 1 and the even-numbered plate 2 in sequence, accelerates at the side wall and the center of the reactor in turn, and f...

Embodiment 2

[0028] Example 2, such as figure 1 , figure 2 , image 3 As shown, a high light oil yield, low back-mixing and long-period operation reactor internals, the sequence, number, and spacing of odd-numbered plates 1 and even-numbered plates 2 can be changed.

[0029] A high light oil yield, low back-mixing and long-period operation reactor internals, consisting of figure 1 The odd-numbered plates 1 and even-numbered plates 2 in the long-period visbreaking reactor internals combination diagram are arranged in sequence in the reactor 3 with a certain number of plates. The reaction raw materials enter from the bottom of the reactor 3, pass through the odd-numbered plates 1 and even-numbered plates 2 from bottom to top, and finally exit through the top of the reactor 3. When the reaction material passes through the odd-numbered plates, the flow rate of the liquid is increased under the extrusion of the odd-numbered plates and the tower body, which reduces the back-mixing of the liq...

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Abstract

A reactor internal-part with high light oil yield, low back-mixing and long-term operation and a technological method thereof belong to the technical field of oil refining equipment. Odd-number trays and even-number trays are all inclined a certain degree. The odd-number trays are V-shaped plates with small holes at the center, and there is a long distance between the external edge and a visbreaking tower body; and the even-number trays are inverted V-shaped plates with large holes at the center, and there is a shorter distance between the external edge and the visbreaking tower body. When reaction materials pass through two sides of the odd-number trays, speed will be gradually raised such that the reaction materials pass through intervals between the tower plates and the reactor wall at a high speed. When speed reaches the maximum, the reaction materials leave the even-number trays from the center. Through the gradually-narrowing intervals between the odd-number trays and the tower body, flow velocity of a fluid continuously increases, thus scouring the side wall of the tower body to the maximum so as to avoid back-mixing caused by low flow velocity at the side wall. Reaction raw oil passes through the odd-number trays and the even-number trays in order, successively speeds up at the side wall and center of the reactor, and finally passes through all the trays to go out of the reactor.

Description

technical field [0001] The invention relates to an internal part and a process method of a reactor with high light oil yield and low back-mixing and long-period operation, and belongs to the technical field of oil refining equipment. Background technique [0002] The quality of international crude oil is gradually becoming heavier and inferior, which puts forward more stringent requirements for refining units. In the process of processing heavy and inferior crude oil residues, visbreaking, as a mature thermal processing technology that does not generate coke, has gradually attracted attention in the industry in recent years. Its main purpose is to improve the pour point and viscosity of residual oil to meet the specification requirements of fuel oil, or to reduce the amount of blended oil even though it does not meet the specification requirements of fuel oil. Accelerating the development and construction of visbreaking process equipment is an effective way to solve the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/14
CPCC10G9/14
Inventor 范振鲁徐令宝董福春谢国宏刘登峰梁泽涛
Owner BC P INC CHINA NAT PETROLEUM CORP
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