Method for preparing catalytic thermal cracking raw materials from full-fraction shale oil

A technology for catalytic pyrolysis and shale oil, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as insufficient binding degree

Active Publication Date: 2015-12-16
ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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Problems solved by technology

[0020] The purpose of the present invention is to provide a method for producing catalytic pyrolysis raw materials from full-fraction shale oil in order to solve the technical problem of insufficient combination of oil shale industry structure "big head and small tail" and "oil-chemical" before the existing method

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  • Method for preparing catalytic thermal cracking raw materials from full-fraction shale oil
  • Method for preparing catalytic thermal cracking raw materials from full-fraction shale oil
  • Method for preparing catalytic thermal cracking raw materials from full-fraction shale oil

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specific Embodiment approach 1

[0087] Specific implementation mode one: the method for preparing the catalytic pyrolysis raw material from the whole distillate shale oil in this embodiment is as follows:

[0088] 1. Raw material pretreatment unit:

[0089] The whole cut shale oil enters the raw oil buffer tank of the pretreatment unit for buffering, and then enters the atmospheric distillation tower for fractionation.

[0090] The raw material oil buffer tank is divided into two, the temperature of the first raw material oil buffer tank is 60-80° C., and the pressure is 0.1-0.3 MPaG; the temperature and pressure of the second raw material oil buffer tank are normal temperature and normal pressure.

[0091] 2. Atmospheric distillation unit:

[0092] The full-fraction shale oil from the vacuum distillation unit enters the atmospheric furnace for heating after heat exchange, and then enters the atmospheric distillation tower for fractionation. After passing through the atmospheric distillation tower, the prod...

specific Embodiment approach 2

[0160] Embodiment 2: This embodiment differs from Embodiment 1 in that the light shale oil described in step 2 is a distillate oil of ≤350°C; the heavy shale oil is a distillate oil of >350°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0161] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the absorption oil described in step 2 is light shale oil, and the C contained in the non-condensable gas is washed out. 3 and C 4 components. Others are the same as those in the first or second embodiment.

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Abstract

The invention discloses a method for preparing catalytic thermal cracking raw materials from full-fraction shale oil, relates to a full-fraction shale oil deep processing process, and aims to solve the technical problems of 'more money on exhibit and less money on counterfoil' and insufficiency in 'oil-chemical' combination degree of the current oil shale industrial structure in the conventional method. The method is conducted in the following units: 1, a raw material pretreatment unit; 2, an atmospheric distillation unit; 3, a reduced pressure distillation unit; 4, a hydrotreating unit; 5, a product fractional distillation unit. According to the method, the utilization ratio of the shale oil resource is effectively increased; the main product is hydrofined wax oil used as the raw material for a follow-up catalytic thermal cracking device; the by-products are high-value LPG, hydrogenated petroleum naphtha and hydrogenated diesel oil; light shale oil (lower than or equal to 350 DEG C) and residual oil (higher than 500 DEG C) which are thrown away from the process device can be further processed and utilized in a downstream device. The method belongs to the field of full-fraction shale oil deep processing.

Description

technical field [0001] The invention relates to a deep processing technology of whole distillate shale oil. Background technique [0002] my country's large economic aggregate and fast economic growth have led to a rapid increase in the demand for chemical products and a strong demand for basic chemical raw materials. Low-carbon olefins (ethylene, propylene, butene, etc.) are the key basic raw materials for the development of the petrochemical industry. At present, the supply of domestic olefin raw materials cannot meet the demand of downstream consumption, especially the shortage of ethylene. In 2014, the national ethylene output was 17.04 million tons, while polyethylene, ethylene glycol, polyvinyl chloride, vinyl acetate and other downstream derivatives of ethylene were imported in large quantities, among which polyethylene Ethylene imports amounted to 8.25 million tons. It is expected that the domestic ethylene equivalent gap will still exceed 40% in 2015. Although the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02C10G49/00C10G49/04B01J23/888B01D53/14
Inventor 陈松徐晓秋王阳周扬李福裿
Owner ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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