阅读说明：本技术 一种重质原料油生产3#喷气燃料油的加工工艺 (Processing technology for producing 3# jet fuel oil from heavy raw oil ) 是由 陶春风 滕明才 夏金龙 于 2020-04-10 设计创作，主要内容包括：本发明涉及一种重质原料油生产3#喷气燃料油的加工工艺,包括如下步骤：a、加氢产物进入汽提塔脱除硫化氢及C5等较轻组分,汽提塔底物料进入主分馏塔进行产品细分,主分馏塔采用塔底重沸炉供热,主分馏塔设置两个侧线汽提塔,侧一线采出3#喷气燃料；b、在运行中主分馏塔侧一再沸器全开,将侧一分出一路打入主分馏塔17层塔盘下,侧一出口温度185℃,侧一分出一路后侧一温度下降至165℃,塔顶产品和3#喷气燃料产品稳定采出,S1000产品供应华南、华东、东南等地,市场前景广阔,经济效益可观。(The invention relates to a processing technology for producing 3# jet fuel oil from heavy raw oil, which comprises the following steps: a. the hydrogenated product enters a stripping tower to remove hydrogen sulfide, C5 and other light components, the material at the bottom of the stripping tower enters a main fractionating tower to subdivide the product, the main fractionating tower adopts a tower bottom reboiling furnace to supply heat, the main fractionating tower is provided with two side stripping towers, and 3# jet fuel is extracted from the first side line; b. when the device is operated, a reboiler at the side of the main fractionating tower is fully opened, a branch at the side is injected under a 17-layer tray of the main fractionating tower, the temperature of a first outlet at the side is 185 ℃, the temperature of a first outlet at the side is reduced to 165 ℃ after a branch at the side is separated, products at the top of the tower and 3# jet fuel products are stably extracted, and S1000 products are supplied to places such as south China, east China, southeast China and the like, so that the market prospect is wide, and the economic benefit is considerable.)

1. A processing technology for producing 3# jet fuel oil from heavy raw oil is characterized by comprising the following steps:

a. the hydrogenated product enters a stripping tower to remove hydrogen sulfide, C5 and other light components, the material at the bottom of the stripping tower enters a main fractionating tower to subdivide the product, the main fractionating tower adopts a tower bottom reboiling furnace to supply heat, the main fractionating tower is provided with two side stripping towers, and 3# jet fuel is extracted from the first side line;

b. in operation, a reboiler at the side of the main fractionating tower is fully opened, and one branch of the side is fed into the lower part of the 17-layer tray of the main fractionating tower.

2. The process for preparing 3# jet fuel oil from heavy raw oil according to claim 1, wherein the temperature of the first outlet at the side is 185 ℃, the temperature of the first outlet at the side is reduced to 165 ℃, and the overhead product and the 3# jet fuel product are stably extracted.

3. The process for producing 3# jet fuel oil from heavy raw oil according to claim 1, wherein the process employs a TH series hydrogenation catalyst for hydrofinishing.

Technical Field

The invention relates to the field of petrochemical production, in particular to a processing technology for producing 3# jet fuel oil from heavy raw oil.

Background

The 3# jet fuel is high-quality kerosene type jet fuel which is prepared by adding a proper amount of additives according to the requirements into hydrocracking kerosene fraction or refined straight-run kerosene fraction. The product has deep refining degree and good cleanness; low sulfur and mercaptan sulfur content, low corrosivity and no odor; the stability is good, the product is not easy to deteriorate when stored at normal temperature, and the generated colloid sediment is less at higher use temperature; high altitude performance and combustion performance are good, complete and stable combustion can be ensured, carbon deposit is small, smoke is less, air resistance is not generated in high altitude flight, and evaporation loss is small.

The 3# jet fuel has the advantages of higher flash point, no control of the initial boiling point and the like, so that the production process has higher flexibility and is suitable for the current situation of producing jet fuel oil by paraffin base in China, and the 3# jet fuel is widely applied to various aspects such as civil and military airplanes, exports and the like. The following problems exist in the processing of # 3 jet fuel: 1. the cutting precision of the main fractionating tower is insufficient; the yield of the 2.3# jet fuel oil is low.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a processing technology for producing 3# jet fuel oil from heavy raw oil.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a processing technology for producing 3# jet fuel oil from heavy raw oil comprises the following steps:

a. the hydrogenated product enters a stripping tower to remove hydrogen sulfide, C5 and other light components, the material at the bottom of the stripping tower enters a main fractionating tower to subdivide the product, the main fractionating tower adopts a tower bottom reboiling furnace to supply heat, the main fractionating tower is provided with two side stripping towers, and 3# jet fuel is extracted from the first side line;

b. in operation, a reboiler at the side of the main fractionating tower is fully opened, and one branch of the side is fed into the lower part of the 17-layer tray of the main fractionating tower.

Furthermore, the temperature of a first side outlet is 185 ℃, the temperature of a first side outlet is reduced to 165 ℃ after a first side outlet is separated, and a top product and a 3# jet fuel product are stably extracted.

Further, the process adopts TH series hydrogenation catalysts for hydrofining.

The invention has the beneficial effects that: the development of the process is cooperated with Shanghai Huaxi chemical engineering science and technology Limited company and Zhonghai oil Tianjin chemical research and design institute, and the catalyst newly researched and produced by the Zhonghai oil Tianjin chemical research and design institute is adopted, so that the process belongs to a new technology in the technical field of high-pressure hydrogenation. The successful achievement of the technology research and development reaches the leading level in China, the high-pressure hydrogenation achievement becomes the first set of new catalyst high-pressure hydrogenation achievement independently researched and developed in China, the important step is taken for producing high-value products and diversification of products from heavy oil in China, and the high-value product high-pressure hydrogenation achievement also becomes a new starting point for creating new revenue for the high and new technology of China. The S1000 product is supplied to places such as south China, east China, southeast China and the like, has wide market prospect and considerable economic benefit.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention.

Detailed Description

Referring to fig. 1, a processing device for producing 3# jet fuel oil from heavy raw oil comprises a main fractionating tower 1 and a stripping tower 2 connected with the main fractionating tower 1, wherein the stripping tower 2 is connected with a hydrogenation reactor 3, the hydrogenation reactor 3 is connected with a heating furnace 4, the heating furnace 4 is connected with a hydrogenation feed buffer tank 5, the hydrogenation feed buffer tank 5 is connected with a hydrogenation feed pipe 6 and a dosing device 7, and a hydrogenation filter 8 is arranged on the hydrogenation feed pipe 6.

A process for preparing 3# jet fuel oil from heavy raw oil includes such steps as electric desalting, dewatering, removing impurities, initial separation in light-weight tower, heating the bottom of light-weight tower in pressure-reducing furnace, and separating and cutting in pressure-reducing tower. And the intermediate product of the de-topping oil/de-side oil/reduced topping oil/reduced first line oil is used as a raw material for further processing of subsequent products.

The method specifically comprises the following steps:

a. the hydrogenation product enters a stripping tower 2 to remove hydrogen sulfide, C5 and other light components, the bottom material of the stripping tower 2 enters a main fractionating tower 1 to subdivide the product, the main fractionating tower 1 adopts a tower bottom reboiling furnace to supply heat, the main fractionating tower 1 is provided with two side stripping towers, and 3# jet fuel is extracted from the side line;

b. in operation, a reboiler at the side of the main fractionating tower 1 is fully opened, and a branch at the side is fed into the lower part of a tower tray at the layer 17 of the main fractionating tower.

Wherein, the temperature of the first outlet at the side is 185 ℃, the temperature of the first outlet at the side is reduced to 165 ℃, and the products at the top of the tower and the 3# jet fuel product are stably extracted. The process adopts TH series hydrogenation catalysts for hydrofining.

The development of the process is cooperated with Shanghai Huaxi chemical engineering science and technology Limited company and Zhonghai oil Tianjin chemical research and design institute, and the catalyst newly researched and produced by the Zhonghai oil Tianjin chemical research and design institute is adopted, so that the process belongs to a new technology in the technical field of high-pressure hydrogenation. The successful achievement of the technology research and development reaches the leading level in China, the high-pressure hydrogenation achievement becomes the first set of new catalyst high-pressure hydrogenation achievement independently researched and developed in China, the important step is taken for producing high-value products and diversification of products from heavy oil in China, and the high-value product high-pressure hydrogenation achievement also becomes a new starting point for creating new revenue for the high and new technology of China. The S1000 product is supplied to places such as south China, east China, southeast China and the like, has wide market prospect and considerable economic benefit.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.