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A coking absorption stabilization process and system

A technology of absorption stabilization and process, applied in the field of coking absorption stabilization process and system, can solve the problems of high energy consumption, high content of C component, poor absorption effect of diesel absorbent, etc., so as to improve the absorption effect and reduce the consumption of steam at the bottom of the tower. , the effect of improving regeneration efficiency and regeneration depth

Active Publication Date: 2019-03-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the high energy consumption and poor absorption effect of diesel absorbent in the existing coking absorption stabilization process, the C in dry gas 3+ The problem of excessive component content, the purpose of the present invention is to provide a coking absorption stabilization process and system

Method used

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  • A coking absorption stabilization process and system
  • A coking absorption stabilization process and system
  • A coking absorption stabilization process and system

Examples

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Effect test

Embodiment 1

[0050] Such as Figure 4 Shown, carry out calculation with absorption stabilization process and device of the present invention, with certain 0.8Mt / a refinery coking rich gas (18000m 3 / h) and naphtha (24t / h) as raw materials. The operating parameters of the rich gas compressor, condensed oil tank, and primary absorption reactor (absorption tower) will not be adjusted. The difference is that the desorption tower and the stabilizing tower are canceled and replaced by an upper clapboard rectification tower, and the stabilized gasoline product is used as a supplementary primary absorbent, and the stabilized gasoline (11t / h) is refluxed. The C2 component temperature of the upper partition rectification tower is 58°C, the liquefied gas temperature of the upper partition rectification tower is 91°C, and the bottom of the partition tower is 196°C. The temperature of the secondary absorption reactor is 48°C and the pressure is 1.05MPa. The secondary absorbent is diesel oil, and the...

Embodiment 2

[0052] Such as Figure 4 Shown, carry out calculation with absorption stabilization process and device of the present invention, with certain 0.8Mt / a refinery coking rich gas (18000m 3 / h) and naphtha (24t / h) as raw materials. The operating parameters of the rich gas compressor, condensed oil tank, and primary absorption reactor (absorption tower) will not be adjusted. The difference is that the desorption tower and the stabilizing tower are canceled and replaced by an upper clapboard rectification tower (gas phase distribution control is not performed), and the stable gasoline product is used as a supplementary absorbent, and the stable gasoline (11t / h) is refluxed. The C2 component temperature of the upper partition rectification tower is 56°C, the liquefied gas temperature of the upper partition rectification tower is 89°C, and the bottom of the partition tower is 195°C. The temperature of the secondary absorption reactor is 46°C, the pressure is 1.05MPa, and the flow rat...

Embodiment 3

[0054] Such as Figure 4 Shown, carry out calculation with absorption stabilization process and device of the present invention, with certain 0.8Mt / a refinery coking rich gas (18000m 3 / h) and naphtha (24t / h) as raw materials. The operating parameters of the rich gas compressor, condensed oil tank, and primary absorption reactor (absorption tower) will not be adjusted. The difference is that the desorption tower and the stabilizing tower are canceled and replaced by an upper clapboard rectification tower (electromagnetic gas phase distribution control mode), and the stabilized gasoline product is used as a supplementary absorbent, and the stabilized gasoline (11t / h) is refluxed. The desorption gas temperature of the upper partition rectification tower is 53°C, the liquefied gas temperature of the upper partition rectification tower is 86°C, and the bottom of the partition tower is 193°C. The temperature of the secondary absorption reactor is 44°C, the pressure is 1.05MPa, an...

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Abstract

The invention discloses a coking absorption stabilizing process and system. The process comprises the following contents: after condensed oil is separated from coking rich gas through compression and cooling, coking rich gas enters the bottom of a first-stage absorption reactor and is absorbed by virtue of a first-stage absorbent and supplemented first-stage absorbent, the rich first-stage absorbent enters a condensation oil tank, half-lean gas enters a second-stage absorption reactor to be absorbed, and a rich second-stage absorbent enters a regeneration reactor to be regenerated, and is partially discharged outwards and partially circularly used; and condensed oil enters an upper partition board rectifying tower to be separated into C2 and liquefied gas components at the tower top, and the C2 component at the tower top of the left side of a partition board is cooled and then enters the condensation oil tank; the liquefied gas component at the tower top of the right side of the partition board is cooled and then enters a liquefied gas buffer tank, part of liquefied gas is taken as reflux of the tower top while part of liquefied gas is taken as a product to be discharged out of the device, and part of coking stabilized gasoline at the tower bottom is taken a product to be discharged out of the device while part of the coking stabilized gasoline is taken as a supplementing absorbent. According to the coking absorption stabilizing process, the product quality is guaranteed, meanwhile, the energy consumption of the whole system is effectively reduced, and the dryness of dry gas is increased.

Description

technical field [0001] The invention relates to a coking absorption stabilization process and system. Background technique [0002] The coking unit is one of the core units of the refinery. Its function is to split the recombination into light components and produce liquefied gas, gasoline and diesel. The oil products from the coking reactor are cut in the fractionation tower, coking rich gas and coking naphtha are produced at the top of the tower, coked diesel oil is extracted from the middle side line, and coke is produced at the bottom of the tower. The absorption stabilization system is a post-treatment system for coking, which separates the coking rich gas and coking naphtha from the fractionating tower into coking dry gas, coking liquefied gas and coking stable gasoline. [0003] The research on absorption stabilization process mainly lies in two aspects of system energy saving and product adjustment. The old devices of the absorption stabilization system in the 1960...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G70/04C10G70/06
CPCC10G70/04C10G70/041C10G70/043C10G70/06
Inventor 陈建兵薄德臣张龙高景山王阳峰高明
Owner CHINA PETROLEUM & CHEM CORP
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