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Drastic desulfurizing method for light end products by solid base

A light oil product, deep desulfurization technology, applied in the direction of refining with solid alkaline materials, etc., can solve the adverse effects of the operation cycle of the deodorization device in the subsequent step, environmental pollution, unfavorable problems, etc.

Inactive Publication Date: 2003-11-19
PETROCHINA CO LTD +1
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Problems solved by technology

However, due to the increase in the amount of processed sulfur-containing and high-sulfur crude oil in recent years, coupled with the improvement of environmental protection requirements, the above sweetening process has also produced some problems
Wherein the main problems that exist are: (1) because gasoline pre-alkali washing discharges waste lye in large quantities, causes environmental pollution, is unfavorable to environmental protection
(2) The cleaning effect of liquid caustic is not good, which has an adverse effect on the operation cycle of the subsequent deodorization device; (3) The whole set of devices is not conducive to further improving the efficiency of gasoline deodorization

Method used

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  • Drastic desulfurizing method for light end products by solid base
  • Drastic desulfurizing method for light end products by solid base

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Embodiment Construction

[0012] The technical characteristics of the present invention will be described in detail below in conjunction with the embodiments.

[0013] In actual design and implementation, the designer realizes the technique described in the present invention in the following manner:

[0014] 1. After alkali washing (liquid alkali washing or solid alkali washing), the gasoline enters the oxidation deodorization tower for sweetening. The sweetened gasoline is directly fed into the liquid separation tank, and the separated gasoline is sent to the sand filter tower in the next step.

[0015] 2. In the process, another process is that if the gasoline is washed with solid alkali, it can meet the mercaptan sulfur content index requirements, and the gasoline can be directly discharged from the solid alkali tower to the gas-liquid separation tank without further demercaptan treatment. The separated gasoline goes to the sand filter tower in the next step.

[0016] 3. Gasoline alkali washing can...

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Abstract

A process for deeply desulfurizing light oil by use of solid alkali features the combination of solid alkali with deodoriing step. Its advantages are simple apparatus and process, high effect on removing alcohol and sulfur and low pollution.

Description

technical field [0001] The invention relates to a method for deep desulfurization of light oil products by using solid alkali, which is an improvement on the refining method of light oil products in petrochemical production. Deep desulfurization and refining of sulfur light oil products. Background technique [0002] The sulfur content in light oil products has always been an important issue of general concern. As we all know, sulfides are harmful substances in oil products. Their existence will not only lead to a decline in the quality of oil products and seriously affect their performance, but also cause poisoning and deactivation of catalysts during processing; the activity of elemental sulfur and hydrogen sulfide Sulfides are very corrosive and can severely corrode equipment; especially when light oil products are burned as fuel, sulfides will be discharged into the atmosphere in the form of SOx, forming acid rain, causing serious pollution to the natural environment an...

Claims

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Application Information

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IPC IPC(8): C10G19/073
Inventor 夏道宏项玉芝郭洪明张洪滨张振江郭宗光
Owner PETROCHINA CO LTD
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