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Aid for improving yield of liquid oil in oil delayed coking device and preparation method for aid

A technology of delayed coking and additives, which is applied in the petroleum industry, cracking, non-catalytic thermal cracking, etc. It can solve problems such as coking, prolonging the start-up period, and increasing the yield of liquid oil.

Active Publication Date: 2015-05-06
CANGZHOU XINCHANG CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) Adding additives, adding coking inhibitors to the raw material residue oil can only solve the problem of coking in the heating furnace tube of the coking unit and prolong the start-up period, but the effect on increasing the yield of liquid oil products is not obvious
The additives currently used can only solve the coking problem of the heating furnace tube of the coking unit and prolong the start-up period, but have no obvious effect on increasing the yield of liquid oil

Method used

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  • Aid for improving yield of liquid oil in oil delayed coking device and preparation method for aid
  • Aid for improving yield of liquid oil in oil delayed coking device and preparation method for aid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 prepares the raw material of auxiliary agent of the present invention

[0029] Four groups of formula

[0030] .

[0031] The solvent is selected from s-100#, s-200# aromatic solvent oil or 120#, 200# alkane solvent oil, wherein, in the 3# auxiliary agent, the solvent used is 200# alkane solvent oil.

[0032] Preparation:

[0033] Add each component into the reaction vessel with a heating device according to the above four groups of different mass parts, control the temperature at 50-60°C, stir for 3 hours, and stir evenly to obtain the product of the present invention.

Embodiment 2

[0034] Embodiment 2 The evaluation test of the high liquid oil yield effect of the auxiliary agent described in the present invention

[0035] The raw oil used in the test was residual oil, which was taken from the delayed coking unit of Cangzhou Branch of Sinopec. Evaluation tests were carried out on the four groups of 1#-4# different products in the above Example 1 to investigate the effect of increasing the yield of liquid oil.

[0036] 2.1 Experimental device

[0037] Experimental device by figure 1 build.

[0038] 2.2 Test process conditions

[0039] Both blank test and dosing test adopt the following operating conditions:

[0040] 1) Residual oil entering furnace temperature is 100℃±1℃,

[0041] 2) The heating furnace temperature is 590℃±2℃,

[0042] 3) The temperature of residual oil out of the furnace is 496°C±2°C,

[0043] 4) Water vapor injection rate is 2% (accounting for residual oil flow),

[0044] 5) The flow rate of the residual oil in the furnace tube i...

Embodiment 3

[0050] Example 3 3# additive application effect evaluation example

[0051] Additive 3# was used to investigate the effect of different additions on light oil yield and its adaptability to different coking raw materials. The addition amount is determined between 100-500 ug / g, and about 1500g of raw material residue is used for each blank test and additive test. The general properties of five different raw material residues are shown in the table below.

[0052] Test the properties of raw oil

[0053] ,

[0054] On the laboratory simulation device, according to the test process conditions, a blank test was carried out, and the addition test of the additives was 100ug / g, 200ug / g, 300ug / g and 500ug / g. The test data of total liquid yield before and after dosing is shown in the table below.

[0055] The effect of the amount of additives added on the total liquid yield

[0056]

[0057] It can be seen from the above table that the additives have the effect of increasing ...

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Abstract

The invention discloses an aid for improving the yield of liquid oil in an oil delayed coking device and a preparation method for the aid. The aid is prepared from N,N-bis(salicylidene) propylenediamine, p-tert-butylcatechol, tetrapentaerythritol ester, octylphenol polyoxyethylene (30) ether, N,N-di-n-butyl ammonia methylbenzotriazole and a solvent. The aid is directly added into raw material residual oil, so that a phenomenon that a coking device is coked when heating a furnace pipe and the on-stream period is prolonged can be avoided, the generation amount of coke and dry gas is reduced, and the liquid oil yield is improved; the method is simple, convenient and economical, and eventually, aims of increasing economic benefits, saving energy and reducing emission amount of carbon dioxide are fulfilled.

Description

technical field [0001] The invention relates to an auxiliary agent and a preparation method thereof, in particular to an auxiliary agent capable of increasing the yield of liquid oil in a petroleum delayed coking device and a preparation method thereof, belonging to the field of petrochemical industry. Background technique [0002] Delayed coking is a process of heavy oil processing. Heavy oil is thermally cracked and converted in a coke tower to obtain gas, gasoline, diesel oil, coker wax oil and coke. At present, the main ways to increase the liquid oil yield of the coking unit are: (1) Residual oil is first hydrogenated and then coked. This method can not only greatly increase the liquid yield, but also improve the product quality, but the investment and cost of this method The operating costs are too high to be economically viable. (2) Optimizing the operating conditions. Continental Petroleum Corporation increased the liquid yield by reducing the circulation ratio, red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G9/16
CPCY02P30/40
Inventor 李斐刘公召
Owner CANGZHOU XINCHANG CHEM CORP
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