阅读说明：本技术 一种重质原料油生产s1000的加工工艺 (Processing technology for producing S1000 from heavy raw oil ) 是由 陶春风 滕明才 夏金龙 于 2020-04-13 设计创作，主要内容包括：本发明涉及一种重质原料油生产S1000的加工工艺,包括如下步骤：a、增加空冷的喷淋水量,并把原有的后冷系统投用进行分流,最终确保脱轻塔顶至罐区的物料温度小于50℃,达到安全存储要求；b、通过提高塔顶与塔顶回流罐之间的压差来增加流量,同时适当的提高塔的操作压力,减少塔顶产出量,增加侧线产出量的方式(侧线量增加后,两台泵同时投用,控制阀副线也全部打开),降低塔顶的负荷,塔顶压力控制不大于0.3MPa；c、减压塔操作以沥青合格为原则,真空度控制小于15KPa,减一线组分最大量拔出,减二线减少重叠量,解决了产品外送温度偏高的问题；解决了脱轻塔顶负荷较高的问题。(The invention relates to a processing technology for producing S1000 by heavy raw oil, which comprises the following steps: a. increasing the spraying water amount of air cooling, and shunting the original after-cooling system, and finally ensuring that the temperature of the material from the top of the light component removal tower to the tank area is less than 50 ℃ to meet the requirement of safe storage; b. the flow is increased by improving the pressure difference between the top of the tower and the reflux tank at the top of the tower, the operating pressure of the tower is properly improved, the output of the top of the tower is reduced, the output of a lateral line is increased (after the output of the lateral line is increased, two pumps are put into use at the same time, and all control valve secondary lines are opened), the load at the top of the tower is reduced, and the pressure at the top of the tower is controlled to be not more than 0.3 MPa; c. the vacuum tower operation is based on the principle that asphalt is qualified, the vacuum degree is controlled to be less than 15KPa, the maximum amount of components is extracted by subtracting a first line, the overlapping amount is reduced by subtracting a second line, and the problem that the delivery temperature of products is higher is solved; the problem of high load at the top of the light component removal tower is solved.)

1. The processing technology for producing S1000 by using heavy raw oil is characterized by comprising the following steps:

a. increasing the spraying water amount of air cooling, and shunting the original after-cooling system, and finally ensuring that the temperature of the material from the top of the light component removal tower to the tank area is less than 50 ℃ to meet the requirement of safe storage;

b. the flow is increased by improving the pressure difference between the top of the tower and the reflux tank at the top of the tower, the operating pressure of the tower is properly improved, the output of the top of the tower is reduced, the output of a lateral line is increased (after the output of the lateral line is increased, two pumps are put into use at the same time, and all control valve secondary lines are opened), the load at the top of the tower is reduced, and the pressure at the top of the tower is controlled to be not more than 0.3 MPa;

c. the vacuum tower operation is based on the principle that asphalt is qualified, the vacuum degree is controlled to be less than 15KPa, the maximum amount of components is extracted by subtracting a first line, and the overlapping amount is reduced by subtracting a second line.

2. The process for producing S1000 heavy feed oil according to claim 1, wherein the reflux amount is not less than 22 ton/hr, and the initial boiling point of the first cut-off line is controlled to be less than 190 ℃.

3. The process for processing S1000 on the basis of heavy raw oil according to claim 2, wherein the amount of reflux is controlled to be not less than 1 ton/hr, and the dry point is ensured to be less than 355 ℃.

4. The process for producing S1000 heavy raw oil according to claim 3, wherein the second-cut reflux temperature is controlled to be not less than 120 ℃, the extraction temperature is controlled to be 225 ℃ to 240 ℃, and the light components in the second-cut are extracted as much as possible.

Technical Field

The invention relates to the field of petrochemical production, in particular to a processing technology for producing S1000 by using heavy raw oil.

Background

The production technology of foreign S1000 products mainly adopts a hydrogenation method, takes straight-run gasoline as a raw material, and fractionates S1000 oil products through hydrogenation dearomatization, desulfurization and refining. The hydrodearomatization technology in China develops rapidly in recent years and forms a series of technologies initially. The raw materials for producing the S1000 product mainly comprise catalytic reforming raffinate oil, aviation kerosene, straight-run diesel oil and the like. According to different raw material sources and product quality requirements, a low-pressure hydrogenation dearomatization technology, a high-pressure hydrogenation refining dearomatization technology and a high-pressure hydrogenation refining dearomatization-isomerization pour point depression technology can be respectively selected. The low-pressure hydrogenation dearomatization technology mainly takes catalytic reforming raffinate oil as a raw material to produce hexane oil serving as vegetable oil extraction solvent oil. The catalytic reforming raffinate oil is the produced oil after the aromatic hydrocarbon is extracted from the catalytic reforming produced oil, and contains a certain amount of olefin and trace aromatic hydrocarbon (benzene ho can cause the aromatic hydrocarbon content of the solvent oil to be higher due to the olefin and the aromatic hydrocarbon, and can not meet the index requirement of extracting the solvent oil from the vegetable oil, so that the olefin and the aromatic hydrocarbon are required to be removed.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a processing technology for producing S1000 by using heavy raw oil.

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

a processing technology for producing S1000 by heavy raw oil comprises the following steps:

a. increasing the spraying water amount of air cooling, and shunting the original after-cooling system, and finally ensuring that the temperature of the material from the top of the light component removal tower to the tank area is less than 50 ℃ to meet the requirement of safe storage;

b. the flow is increased by improving the pressure difference between the top of the tower and the reflux tank at the top of the tower, the operating pressure of the tower is properly improved, the output of the top of the tower is reduced, the output of a lateral line is increased (after the output of the lateral line is increased, two pumps are put into use at the same time, and all control valve secondary lines are opened), the load at the top of the tower is reduced, and the pressure at the top of the tower is controlled to be not more than 0.3 MPa;

c. the vacuum tower operation is based on the principle that asphalt is qualified, the vacuum degree is controlled to be less than 15KPa, the maximum amount of components is extracted by subtracting a first line, and the overlapping amount is reduced by subtracting a second line.

Furthermore, the upper reflux of the first reduction line is properly increased, the reflux amount is not less than 22 tons/hour, and the initial boiling point of the first reduction line is controlled to be less than 190 ℃.

Further, the reflux amount under the line-reducing line is controlled to be not less than 1 ton/h, and the dry point of the line-reducing line is ensured to be less than 355 ℃.

Further, the reflux temperature of the second reducing line is controlled to be not less than 120 ℃, the extraction temperature is controlled to be 225-240 ℃, and light components in the second reducing line are extracted as much as possible.

The invention has the beneficial effects that: the process development cooperates with Shanghai Huaxi chemical technology Co., Ltd, and Zhonghai oil Tianjin chemical research and design institute, adopts a catalyst newly developed and produced by the Zhonghai oil Tianjin chemical research and design institute, and 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 problem of high delivery temperature of the product is solved; the problem of high load at the top of the light component removal tower is solved.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

As shown in fig. 1, a processing technology for producing S1000 heavy raw oil includes the following steps:

a. increasing the spraying water amount of air cooling, and shunting the original after-cooling system, and finally ensuring that the temperature of the material from the top of the light component removal tower to the tank area is less than 50 ℃ to meet the requirement of safe storage;

b. the flow is increased by improving the pressure difference between the top of the tower and the reflux tank at the top of the tower, the operating pressure of the tower is properly improved, the output of the top of the tower is reduced, the output of a lateral line is increased (after the output of the lateral line is increased, two pumps are put into use at the same time, and all control valve secondary lines are opened), the load at the top of the tower is reduced, and the pressure at the top of the tower is controlled to be not more than 0.3 MPa;

c. the vacuum tower operation is based on the principle that asphalt is qualified, the vacuum degree is controlled to be less than 15KPa, the maximum amount of components is extracted by subtracting a first line, and the overlapping amount is reduced by subtracting a second line.

Furthermore, the upper reflux of the first reduction line is properly increased, the reflux amount is not less than 22 tons/hour, and the initial boiling point of the first reduction line is controlled to be less than 190 ℃.

Further, the reflux amount under the line-reducing line is controlled to be not less than 1 ton/h, and the dry point of the line-reducing line is ensured to be less than 355 ℃.

Further, the reflux temperature of the second reducing line is controlled to be not less than 120 ℃, the extraction temperature is controlled to be 225-240 ℃, and light components in the second reducing line are extracted as much as possible.

The process development cooperates with Shanghai Huaxi chemical technology Co., Ltd, and Zhonghai oil Tianjin chemical research and design institute, adopts a catalyst newly developed and produced by the Zhonghai oil Tianjin chemical research and design institute, and 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 problem of high delivery temperature of the product is solved; the problem of high load at the top of the light component removal tower is solved.

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.