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Suspended bed external separation system and using method thereof

A technology of separation system and suspension bed, which is applied in the field of external separation system of suspension bed, can solve the problems of short service life of catalyst, increase of production cost, clogging of catalyst pores, etc., so as to increase the operation cycle of the device, reduce production and operation cost, and ensure the use The effect of longevity

Pending Publication Date: 2022-01-07
山东汇邦新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the second-generation biodiesel hydrogenation unit, the operating period of the reaction system is short, mainly manifested in the increase of bed pressure drop in a short period of time, and the discoloration of the product, which makes the unit unable to continue to operate.
In addition, the catalyst powder in the suspension bed and the oil containing high heavy metals are carried to the fixed bed reactor through the air flow, so that the catalyst channels of the fixed bed reactor are quickly blocked, the pressure drop of the bed layer increases, and the operation cannot continue
However, the service life of the catalyst is short, resulting in frequent shutdowns such as shutdowns and catalyst replacements, and increased production costs.

Method used

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  • Suspended bed external separation system and using method thereof

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Embodiment 1

[0028] See figure 1 , an external separation system for a suspended bed, comprising a high-pressure feed pump 1, a suspended bed reactor 2, a primary cyclone separator 3, a secondary cyclone separator 4, a fixed bed reactor 5, a heat exchanger 6, and a cold high-pressure separation Device 7 and cold low-pressure separator 8;

[0029] The outlet of the high-pressure feed pump 1 is connected with the bottom inlet of the suspension bed reactor 2, the bottom of the primary cyclone separator 3 is connected with the first material leg 31, and the bottom of the secondary cyclone separator 4 is connected with the second material leg 41, The ends of the first material leg 31 and the second material leg 41 are respectively connected with the bottom inlet of the suspended bed reactor 2, the top inlet of the primary cyclone separator 3 is connected with the top outlet of the suspended bed reactor 2, and the primary cyclone separator The top outlet of 3 is connected with the top inlet of ...

Embodiment 2

[0039] A method for using the external separation system of a suspended bed, comprising the steps of:

[0040] The high-pressure feed pump 1 feeds from the middle and lower part of the bottom bed of the suspension bed reactor 2, mixes with the heavy components of the first material leg 31 and the second material leg 41, and with the hot air flow upwards, it is mixed with the catalyst in the suspension bed to react;

[0041] After the top product of the suspended bed reactor 2 is separated by the primary cyclone separator 3 and the secondary cyclone separator 4, the light components enter the fixed bed reactor 5 for further demetallization, denitrogenation and other reactions; and the first dipleg 31 1. The heavy components separated by the second dipleg 41 and oil products containing catalyst powder and heavy metals enter the suspended bed reactor 2 again to react with the raw materials;

[0042]The heavy component inside the suspended bed reactor 2 is deposited to the bottom...

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Abstract

The invention relates to the technical field of suspended bed hydrogenation, in particular to a suspended bed external separation system and a using method thereof. The suspended bed external separation system comprises a high-pressure feeding pump, a suspended bed reactor, a primary cyclone separator, a secondary cyclone separator, a fixed bed reactor, a heat exchanger, a cold high-pressure separator and a cold low-pressure separator. The suspended bed external separation system has the following advantages: 1, light and heavy components can be effectively separated through the primary cyclone separator and the secondary cyclone separator, and the heavy components enter the suspended bed reactor again for reaction separation; 2, the operation cycle of the fixed bed reactor at the rear part of the suspended bed reactor is ensured, the pressure drop is reduced, and the service life of a catalyst is ensured; and 3, the heavy oil at the bottom of the suspended bed reactor, which contains more catalyst powder, heavy metals and the like, are discontinuously discharged, so that the load of the suspended bed reactor is reduced.

Description

technical field [0001] The invention relates to the technical field of hydrogenation of a suspended bed, in particular to an external separation system of a suspended bed and a method for using the same. Background technique [0002] At present, in the second-generation biodiesel hydrogenation unit, there is a short operation period of the reaction system, which is mainly manifested in the increase of bed pressure drop in a short period of time and the discoloration of the product, which makes the unit unable to continue to operate. Moreover, the catalyst powder in the suspended bed and the oil containing high heavy metals are carried to the fixed bed reactor through the air flow, so that the catalyst channels of the fixed bed reactor are quickly blocked, the pressure drop of the bed layer increases, and the operation cannot continue. However, the service life of the catalyst is short, resulting in frequent shutdowns such as shutdowns and catalyst replacements, and increased...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCC10G3/56Y02E50/10Y02P30/20
Inventor 梁召艳聂在杰司彦领
Owner 山东汇邦新材料有限公司
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