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Coking wax oil complexing denitrification refining method

A technology for coking wax oil and refining method, which is applied in the direction of non-metal refining, etc., can solve the problems of high investment in hydrogen production equipment, high operating costs, and unsatisfactory denitrification effect of solvent refining, and achieves reliable material guarantee and good selectivity. , the effect of high denitrification reactivity

Inactive Publication Date: 2014-03-26
湖北本心环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the investment and operating costs of hydrogen production equipment are large, and the denitrification effect of solvent refining is not very ideal. However, acid treatment, solid adsorption and complexation refining still need to solve the problems of refining selectivity, corrosion and waste residue treatment.

Method used

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  • Coking wax oil complexing denitrification refining method
  • Coking wax oil complexing denitrification refining method
  • Coking wax oil complexing denitrification refining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of complexing modifier: 25% maleic anhydride, 50% 1-butyl-3-methylimidazolium tetrafluoroborate, 7% polyacrylamide, 2% bis-imidazoline quaternary ammonium salt, 16% glycerol.

[0029] Refining is carried out through the following steps: (1) Pre-mixing Lanzhou Petrochemical Coker Wax Oil (its properties are shown in Table 1) with a complex modifier, and the mass fraction of the complex modifier added is 1%;

[0030] (2) After fully stirring and mixing at 90~100°C for 30 minutes, let it stand at 90~100°C for heat preservation, and settle naturally by gravity for 4 hours. The complexed derivatives settle at the bottom of the settling tank, and the upper part gets refined oil. Its properties are listed in Table 1.

[0031] Table 1 Comparison of the properties of coker wax oil refined in the prior art and the complex modification dosage of the present application:

[0032]

[0033] (3) During the refining process of coking wax oil in the prior art and the co...

Embodiment 2

[0039] Preparation of complexing modifier: 25% maleic anhydride, 50% 1-butyl-3-methylimidazolium tetrafluoroborate, 7% polyacrylamide, 2% bis-imidazoline quaternary ammonium salt, 16% glycerol.

[0040] Refining is carried out through the following steps: (1) Pre-mixing Wuhan Petrochemical Coker Wax Oil (its properties are shown in Table 3) with a complex modifier, and the mass fraction of the complex modifier added is 1.9%;

[0041] (2) After fully stirring and mixing at 90~100°C for 30 minutes, let it stand at 90~100°C for heat preservation, and settle naturally by gravity for 4 hours. The complexed derivatives settle at the bottom of the settling tank, and the upper part gets refined oil. Its properties are listed in Table 3.

[0042] Table 3 Comparison of the properties of coker wax oil refined in the prior art and the complex modification dosage of the present application

[0043] project Before the refining of coker wax oil in the prior art Carry out refi...

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Abstract

The invention relates to an additive added in the coking wax oil refining process, in particular to a coking wax oil complexing denitrification refining method. A coking wax oil complexing modifier comprises the following ingredients in parts by mass: 50 percent to 85 percent of complexing agents, 2 percent to 10 percent of precipitating agents, 0.5 percent to 10 percent of corrosion inhibitors and 2 percent to 30 percent of cosolvents. A combination has higher denitrification reaction activity, meanwhile, reaction products can also be fast separated through settling from oil products, efficiency and reliability of the complexing denitrification refining operation are ensured, various nonideal ingredients in the coking wax oil can be effectively removed, the corrosion on equipment in the process of the complexing process can also be avoided, meanwhile, the reaction products can be fast separated through settling from the oil products, the influence on production devices and environment is not caused, and the environment pollution is reduced.

Description

[0001] technical field [0002] The invention relates to a method for refining coking wax oil, in particular to a method for refining coking wax oil through complex denitrification. [0003] Background technique [0004] With the shortage of global oil resources, the processing of low-quality oil and heavy oil has received extensive attention. After regular vacuum distillation of crude oil, the processing scheme of delayed coking for vacuum residue is widely used, which is related to the advantages of low investment and high conversion depth of delayed coking. Coking wax oil is the main product of delayed coking, and its yield accounts for about 20-40% of the liquid product of the coking unit. It can be used as a blending raw material for catalytic cracking. It can also be used as a blending component of hydrocracking, but the blending amount is very low, otherwise it will have a great impact on the catalyst in the refining section. The high content of basic nitrogen comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/02
Inventor 吴宇锋朱琼徐文刚崔小刚王超靳国民
Owner 湖北本心环保科技股份有限公司
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