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No-waste coker gas oil denitrification refining method and device thereof

A technology for coking wax oil and waste discharge, which is applied in the direction of multi-stage series refining process treatment, petroleum industry, and hydrocarbon oil treatment, can solve the problems of inability to maintain long-term continuous operation, and achieve long-term continuous operation and improve Quality, the effect of optimizing raw material and product quality

Active Publication Date: 2017-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method does not require washing with water, it reduces the residue of denitrification components and avoids the problem of coking wax oil emulsification with water, but due to the limitation of the capacity of the adsorbent used in the fixed bed, it cannot maintain long-term continuous operation.

Method used

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  • No-waste coker gas oil denitrification refining method and device thereof
  • No-waste coker gas oil denitrification refining method and device thereof

Examples

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Effect test

Embodiment 1

[0017] The present invention has no waste discharge coking wax oil denitrification and refining device, such as figure 1 As shown, including No. 1 static mixer 1, denitrification settling tank 2, No. 2 static mixer 3, No. 3 static mixer 6, ammonia washing settling tank 4, oil-water separation tank 10, concentrated crystallization unit 11, and No. 1 replacement Heater 5, heating furnace 7, No. 2 heat exchanger 9, stripper 8 and settling header 12. The inlet of No. 1 static mixer is respectively connected with the coker wax oil pipeline and denitrification agent tank of the delayed coking unit, and the outlet It is connected with the feed port of the denitrification settling tank. The upper outlet of the denitrification settling tank is connected to the feed port of the ammonia scrubbing settling tank through the No. 2 static mixer, and the dilute ammonia water pipeline is connected to the inlet of the No. 2 static mixer. The lower outlets of the denitrification settling tank a...

Embodiment 2

[0022] Another embodiment of the present invention is as figure 2 As shown, the heating device is a steam heater 13, and the top outlet of the ammonia wash settling tank is connected to the feed port of the stripper 3 through the steam heater. Ammonia is used as the stripping agent, and the ammonia pipeline is connected to the stripping agent inlet of the stripping tower. Other processes are the same as in Example 1.

[0023] The coking wax oil is continuously fed at a flow rate of 80.0kg / h, the temperature of the coking wax oil is controlled at 100-120°C, and the denitrification agent is added at a rate of 1.4kg / h. The coker wax oil enters the No. 1 static mixer together with the denitrification agent for mixing reaction, and then enters the denitrification settling tank for sedimentation and separation. The sedimentation residence time is 15 hours. The coker wax oil discharged from the top of the denitrification settling tank enters the No. 2 static mixer together with di...

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Abstract

The invention relates to a no-waste coker gas oil denitrification refining method and a device thereof. The device comprises a No.1 static mixer, a No.2 static mixer, a No.3 static mixer, a denitrification sedimentation tank, an ammonia-washing sedimentation tank, an oil-water separation tank, a condensation crystallization unit and a stripping tower. The method comprises the following steps: mixing coker gas oil and a denitrfying agent and carrying out settling separation, mixing the separated coker gas oil and dilute ammonia water and washing, heating ammonia-washed coker gas oil and letting the heated ammonia-washed coker gas oil enter the stripping tower, stripping the ammonia-washed coker gas oil by using steam or nitrogen as a stripping agent, removing residual moisture and ammonia in the ammonia-washed coker gas oil, sending the stripped ammonia-washed coker gas oil into an oil storage tank to be used as a catalytic cracking raw material; and mixing denitrified tailings and ammonia washing water with concentrated ammonia liquor, and carrying out oil-water separation by an oil-water separation tank. By refining coker gas oil through denitrification, ammonia washing and stripping, quality of coker gas oil is enhanced, and quality of catalytic feedstock and the product is improved. By the use of two stripping agents, namely ammonia gas or steam, flexibility of refining operation is increased.

Description

technical field [0001] The invention belongs to the technical field of petroleum processing and refining, and relates to a method for denitrogenating and refining coking wax oil without waste discharge. Background technique [0002] The development and application of denitrification refining technology for coker gas oil with denitrification agent provides an effective processing method for heavy oil lightening. However, in actual production, since the denitrification agent used is an acidic substance, a small amount of acidic substances such as denitrification agent and denitrification tailings remain in the denitrification coking wax oil after natural sedimentation and separation, which makes the denitrification refining After that, the acid value of the coker wax oil increases sharply. These residual denitrification agents, denitrification tailings and other acidic substances have caused great harm to the catalyst activity and equipment corrosion protection in the subsequ...

Claims

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Application Information

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IPC IPC(8): C10G53/12
CPCC10G53/12C10G2300/1037C10G2300/202
Inventor 吴宇锋潘九海王仲霞刘贵宁靳国民叶云鹏余彬朱琼徐文刚王超崔小刚
Owner CHINA PETROLEUM & CHEM CORP
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