Distillate oil hydrotreatment process

A technology of hydroprocessing and hydrogen, which is applied in the fields of hydroprocessing process, petroleum industry, and hydrocarbon oil treatment, etc. It can solve the problems of increasing the investment cost of reactors, etc., and achieve the effects of improving hydrogen dissolving capacity, simple process flow and stable operation

Inactive Publication Date: 2014-10-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These patented technologies are characterized by the removal of H in the reactor 2 S and NH 3 , increasing the reactor investment cost

Method used

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  • Distillate oil hydrotreatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The reforming raw material goes through the heating furnace to reach the required temperature and fully mixes and dissolves the hydrogen in the gas-liquid mixer, and then enters the first hydrogenation reactor. The reaction conditions are: reaction system pressure 1.1MPa, reaction temperature 251°C, converted hydrogen oil volume The ratio is 110:1, part of the effluent is recycled to the inlet of each reactor, the circulation ratio is 5:1, and part of it enters the second hydrogenation reactor. The reaction conditions are: reaction system pressure 1.1MPa, reaction temperature 240°C, converted hydrogen oil volume The ratio is 100:1, part of the effluent is circulated to the inlet of each reactor, the circulation ratio is 5:1, and part of it enters the first separator for gas-liquid separation, and the separated liquid effluent enters the storage tank 19. The raw material oil properties and product properties are listed in Table 2.

[0042] It can be seen from Table 2 tha...

Embodiment 2

[0044] The mixed diesel raw material goes through the heating furnace to reach the required temperature and is fully mixed and dissolved with hydrogen in the gas-liquid mixer before entering the first hydrogenation reactor. The ratio is 260:1, part of the effluent is recycled to the inlet of each reactor, the circulation ratio is 3:1, and part of it enters the second hydrogenation reactor. The reaction conditions are: reaction system pressure 6.2MPa, reaction temperature 300°C, converted hydrogen oil volume The ratio is 260:1, part of the effluent is recycled to the inlet of each reactor, the circulation ratio is 3:1, and part of it enters the first separator for gas-liquid separation, and the separated liquid effluent enters the storage tank 19. The raw material oil properties and product properties are listed in Table 3.

[0045] It can be seen from Table 3 that the sulfur and nitrogen content in the blended diesel can be significantly reduced by using this technology.

Embodiment 3

[0047] The middle base heavy distillate oil (mixed with coking wax oil) goes through the heating furnace to reach the required temperature and fully mixes and dissolves with hydrogen in the gas-liquid mixer, and then enters the first hydrogenation reactor. The reaction conditions are: the pressure of the reaction system is 14.0MPa , The reaction temperature is 380°C, the converted hydrogen to oil volume ratio is 300:1, a part of the effluent is recycled to the inlet of each reactor, the circulation ratio is 2:1, and part of it enters the second hydrogenation reactor; the reaction conditions are: reaction system pressure 14.0MPa , The reaction temperature is 378°C, the converted hydrogen-oil volume ratio is 300:1, part of the effluent is recycled to the inlet of each reactor, and the circulation ratio is 2:1, and part of it enters the first separator for gas-liquid separation, and the separated liquid effluent enters storage tank19. The raw material oil properties and product p...

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Abstract

The invention relates to a distillate oil hydrotreatment process. The distillate oil hydrotreatment process comprises the following steps of 1, carrying out mixing heating on raw material oil and recycle oil, feeding the mixed oil and hydrogen into a first hydrogen-oil mixer, and feeding the mixture obtained by the first hydrogen-oil mixer into a first reactor, 2, (1) recycling the product oil, or (2) carrying out individual heating on the product oil or mixing heating on the product oil and recycle oil, then feeding the heated oil and hydrogen into a second hydrogen-oil mixer, carrying out mixing, and feeding the mixture into a second reactor, 3, (1) carrying out individual heating on the product oil or mixing heating on the product oil and the recycle oil, then feeding the heated oil and hydrogen into a third hydrogen-oil mixer, carrying out mixing and feeding the mixture into a third reactor, or (2) recycling the product oil obtained by the reactor, or (3) feeding the product oil into a first separator, carrying out stripping separation, recycling the separated liquid oil, feeding the separated liquid oil into a heating furnace or a storage tank and discharging separated gas from the system, and 4, (1) recycling the product oil obtained by the third reactor, or (2) feeding the product oil into a second separator, carrying out stripping separation, recycling the separated liquid oil product or directly feeding the liquid oil product into the storage tank, and discharging separated gas from the system. A distillate oil product produced by heavy and inferior wax oil hydrorefining can be used as a high-quality raw material for a catalytic cracking device or a hydrocracking device.

Description

technical field [0001] The invention relates to a distillate oil hydrotreating process method. Background technique [0002] Chinese patent CN102465027A discloses a method for hydrotreating heavy distillate oil. The raw material oil and hydrogen first enter the gas-liquid mixer through the heating furnace, so that the hydrogen and raw oil are fully mixed, and then enter the first reactor. Contact with the hydrogenation catalyst; the obtained reaction effluent enters the stripping hydrogen mixing equipment to remove the dissolved hydrogen sulfide and ammonia in the oil, and make the hydrogen gas reach the dissolved saturation state in the oil, and then mix it with supplementary hydrogen and enter the second reactor contact with a hydrogenation catalyst. In this method, in addition to the traditional circulating hydrogen compressor system, a gas-liquid mixer and a stripping hydrogen mixer are added, and the investment cost increases. [0003] Chinese patent CN101348732A disc...

Claims

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Application Information

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IPC IPC(8): C10G65/04
Inventor 马守涛张志华于春梅王刚张文成郭金涛宋金鹤
Owner PETROCHINA CO LTD
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