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Method for producing oils and chemicals by co-refining inferior heavy oils and coals

A technology for inferior heavy oil and chemical products, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc. It can solve the problems of easy coking of the device and low oil product yield, etc. The effect of production costs

Active Publication Date: 2019-01-11
上海竣铭化工工程设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of this, the present invention aims to propose a method for co-refining of inferior heavy oil and coal to produce oil products and chemicals, so as to solve the problems of low oil product yield and easy coking of devices in the existing kerosene co-refining technology The problem

Method used

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  • Method for producing oils and chemicals by co-refining inferior heavy oils and coals
  • Method for producing oils and chemicals by co-refining inferior heavy oils and coals
  • Method for producing oils and chemicals by co-refining inferior heavy oils and coals

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Effect test

experiment example 1

[0106] In the experimental process of the present invention, the inventor found that the Kang's carbon residue value in the inferior heavy oil and the toluene insoluble matter content and the relationship between the two have a great influence on the operation of the ebullated bed and the hydrogenation effect, not only affecting It also greatly affects the operating cycle of the device, especially after a long operating time, on the final oil product yield.

[0107] The specific experimental process is as follows:

[0108] Table 1 Properties and parameters of pulverized coal

[0109] Ash %, Ad

6.51

Elemental analysis,%

C daf

75.18

H daf

5.22

N daf

0.98

S daf

0.47

O daf

18.15

[0110] Take the inferior heavy oil with different Kang's carbon residue value and toluene insoluble content and group them into groups, all adopt the method of oil-coal co-smelting in the present invention, wherein the pulveri...

Embodiment 1

[0136] S1. Mix hydrogen-supplying solvent oil, pulverized coal below 100 mesh and Ni-Co-Mo base oil-soluble catalyst to prepare oil-coal slurry, and mix the hydrogen-supplying solvent oil and coal powder in a ratio of 1:1. The amount of pulverized coal is 7.5% of the mass of pulverized coal; the properties of pulverized coal are shown in Table 1;

[0137] S2. Mix the coal oil slurry in step S1 with hydrogen, and after being preheated by the preheater, enter the suspended bed reactor, where the reaction temperature is 380°C, the reaction pressure is 20MPa, and the volumetric space velocity is 0.5h. -1 , hydrogenation reaction is carried out under the condition that the volume ratio of hydrogen to oil is 1500:1;

[0138] S3, the reaction product in step S2 is separated out the hot high-pressure separation gas G1 and the hot high-pressure separation oil O1 through the hot high pressure separator; Wherein, the temperature of the hot high pressure separator is 390 ℃;

[0139] S4, ...

Embodiment 2

[0151] S1. Mix hydrogen-supplying solvent oil, pulverized coal below 100 mesh and Ni-Co-Mo base oil-soluble catalyst to prepare oil-coal slurry, and mix the hydrogen-supplying solvent oil and coal powder in a ratio of 1:1. The amount of pulverized coal is 7.5% of the mass of pulverized coal; the properties of pulverized coal are shown in Table 1;

[0152] S2. Mix the coal oil slurry in step S1 with hydrogen, and after being preheated by the preheater, enter the suspended bed reactor, where the reaction temperature is 380°C, the reaction pressure is 20MPa, and the volumetric space velocity is 0.5h. -1 , hydrogenation reaction is carried out under the condition that the volume ratio of hydrogen to oil is 1500:1;

[0153] S3, the reaction product in step S2 is separated out the hot high-pressure separation gas G1 and the hot high-pressure separation oil O1 through the hot high pressure separator; Wherein, the temperature of the hot high pressure separator is 390 ℃;

[0154] S4, ...

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Abstract

The invention provides a method for producing oils and chemicals by co-refining inferior heavy oils and coals. The method comprises the following steps: preparing a coal oil mixture by mixing coal dust, hydrogen-supplying solvent oil and a catalyst; splitting in a coal oil co-refining reactor; separating the split products, thereby acquiring high-heat oil O1; decompressing and fractionally distilling the high-heat oil O1, thereby acquiring a solid-containing residual oil; performing solid-liquid separation on the solid-containing residual oil, thereby acquiring residual oil; mixing inferior heavy oils with the residual oil and hydrocracking in a boiling-bed reactor; separating the split products, thereby acquiring high-heat oil O2; decompressing and fractionally distilling the high-heat oil O2; side-drawing vacuum gas oil from a fractionating tower; and taking the vacuum gas oil as the hydrogen-supplying solvent oil and reusing in the preparation of the coal oil mixture. According to the method for producing oils and chemicals by co-refining inferior heavy oils and coals provided by the invention, the coal conversion rate and the yield of oils are increased, the coking problem of the system is relieved, the catalyst deactivation is delayed, the prolonging of running period of production equipment is benefited and the production cost is lowered.

Description

technical field [0001] The invention relates to a method for co-refining low-quality heavy oil and coal to produce oil and chemical products, belonging to the technical field of petrochemical and coal chemical industry, and in particular to the technical field of clean coal utilization. Background technique [0002] Coal direct liquefaction and coal-oil co-refining technology are two important fields of semi-coke technology. Coal direct liquefaction process is to mix pulverized coal with circulating solvent and react with hydrogen under certain temperature and pressure conditions, so that the organic matter of coal is directly converted into liquefied oil; then through desulfurization and denitrification, the quality of liquefied oil is further improved, so that the product It can be processed in general refineries to produce transportation fuels and chemical products. The advantages of direct coal liquefaction are high oil yield and high thermal efficiency; the main disadv...

Claims

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Application Information

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IPC IPC(8): C10G69/02
Inventor 王小英
Owner 上海竣铭化工工程设计有限公司
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