Catalytic reforming recontacting process with cold capacity equalization setting

A catalytic reforming and recontacting technology, which is applied in the petroleum industry, naphtha treatment, etc., can solve the problems of complex equipment in the recontacting system, poor recontacting effect, and reduced purity of circulating hydrogen, so as to reduce steam consumption, gas Reasonable liquid separation and reduced gas phase return

Active Publication Date: 2018-11-09
SHANGHAI HOTO PETROCHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the heavy component with better absorption effect is not used in the recontact system, only slightly lighter components are used for recontact. Under the same recontact temperature and pressure conditions, the recontact effect is

Method used

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  • Catalytic reforming recontacting process with cold capacity equalization setting
  • Catalytic reforming recontacting process with cold capacity equalization setting
  • Catalytic reforming recontacting process with cold capacity equalization setting

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0043] Example 1

[0044] see figure 1 As shown, the recontacting process of the catalytic reforming device described in this embodiment is as follows: the reaction product from the reforming reactor is exchanged with the refined naphtha and circulating hydrogen through the reforming feed heat exchanger E-201. After being heated, it enters the first air cooler A-201, and is cooled to 35-45°C and enters the first gas-liquid separation tank V-201. The liquid phase of the first gas-liquid separation tank V-201 is divided into two paths, one of which is boosted by the re-contact oil phase booster pump P-201A as re-contact oil, and mixed with the outlet stream of the fourth air cooler A-204. , enter the first refrigerator E-204; the other way goes through the reformate oil to the separation system booster pump P-201B and directly enters the subsequent reformate oil fractionation system after being boosted. The gas phase of the first gas-liquid separation tank V-201 directly enter...

Example Embodiment

[0045] Example 2

[0046] see figure 2 As shown in the figure, another catalytic reformer recontact process described in this embodiment is different from Embodiment 1 in that the inlet of the second gas-liquid separation tank V-202 is provided with a second refrigerator E-207, and the refrigerator The outlet temperature is -12℃~4℃. The gas phase at the top of the second gas-liquid separation tank V-202 enters the first-stage reformed hydrogen booster K-202-1, and the liquid phase is boosted by the second gas-liquid separation tank bottom pump P-202 and then separated from the fourth gas-liquid After the liquid phase at the bottom of the tank is mixed, it enters the re-contact precooler E-203. The outlet stream of the first-stage reformed hydrogen booster K-202-1 enters the third air cooler A-203 to be cooled to 40 °C and enters the third gas-liquid separation tank V-203 for gas-liquid separation, and the gas phase enters the second-stage reformed hydrogen booster. Press K...

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Abstract

The invention relates to a catalytic reforming recontacting process with cold capacity equilibrium setting, introduced based on the research on the characteristics of the reforming reaction recontacting process flow and the gas-liquid equilibrium characteristics of the product. Two pumps are installed at the bottom of the first gas-liquid separation tank, after being boosted, two-stranded liquid phase enter a recontacting system and a reforming oil fractionation system respectively, the ratio of the two liquid phases can be flexibly adjusted to optimize the recontacting effect and reduce energy consumption; second, third and fourth gas-liquid separation tanks use the way of heat exchange or setting a cooler to reduce the recontacting temperature, reduce the gas phase load of the compressorinlet and the energy consumption; the liquid phase of the second and third gas-liquid separation tanks directly enters the subsequent reforming oil separation system to reduce the accumulation and circulation of the liquefied gas and the above hydrocarbon components in the recontacting system to reduce the energy consumption of device.

Description

technical field [0001] The invention relates to the technical field of catalytic reforming devices, in particular to a catalytic reforming and recontacting process with cooling balance setting. Background technique [0002] Catalytic reforming is one of the most important secondary processing processes in the oil refining and petrochemical industry. It is an important means of producing aromatics and high-octane clean gasoline, and it is also an important source of hydrogen for refining and chemical enterprises. In recent years, with the increasing demand for aromatics and the rapid development of hydrogenation technology, catalytic reforming units have developed rapidly. [0003] Improving reforming hydrogen yield and purity, reducing hydrogen loss, and increasing liquid yield are the main ways to improve the economic and technical indicators of continuous reforming units. The operating pressure of the new continuous reforming reaction separation tank is only 0.24MPaG. Und...

Claims

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Application Information

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IPC IPC(8): C10G61/00
CPCC10G61/00
Inventor 马成国蔡明件张韩王丁何平
Owner SHANGHAI HOTO PETROCHEM ENG
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