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Combined process for comprehensively utilizing partial hydrogenation C5 fraction

A technology of C5 fractionation and combined process, which is applied in the field of production of methyl tert-amyl ether from cyclopentene, cyclopentane and pentane, and can solve problems affecting chemical utilization and other issues

Inactive Publication Date: 2013-09-18
上海博润石化科技发展有限公司 +1
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Problems solved by technology

[0006] The above method is mainly to obtain cyclopentene, cyclopentane and pentane through a combination of hydrogenation and rectification, among which the very valuable monoolefins 2-methyl-2-butene and 2-methyl-1- Butene has not been fully utilized, and the obtained cyclopentene content is only about 90%, which affects its downstream chemical utilization

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  • Combined process for comprehensively utilizing partial hydrogenation C5 fraction

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Embodiment Construction

[0030] The following descriptions are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.

[0031] Examples, see figure 1 Shown:

[0032] The partly hydrogenated C5 fraction with the composition shown in Table 1 was rectified in rectification tower A at a feed rate of 6250.00 kg / hour. The rectification column A is a packed column with a theoretical plate number of 90-110. Partially hydrogenated C5 fraction is fed from the fiftieth plate of rectification tower A when it is preheated to 45-55°C. The temperature at the top is 45-55°C, the reflux ratio is 8-15, 4505.80 kg / hour of crude isopentene is produced at the top of the tower, and 1744.19 kg / hour is discharged from the tower kettle. The main purpose of this step is to separate the light component crude isopentene in Table 1 with a boiling point lower than 38.57°C (2-methyl-2-butene boiling point) from the top of rectification column A, while the bo...

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Abstract

The invention relates to a combined process for comprehensively utilizing a partial hydrogenation C5 fraction, in particular to a method for producing tert amyl methyl ether (TAME), cyclopentadiene, cyclopentane and pentane from the partial hydrogenation C5 fraction raw material through a combined process of a series of rectification and reaction. The combined process comprises etherification reaction, hydrogenation reaction and a multi-tower continuous rectification process. According to the combined process for comprehensively utilizing the partial hydrogenation C5 fraction, the partial hydrogenation C5 fraction with low added value can be used for simultaneously producing the four main products with high added value, i.e., the TAME, the cyclopentadiene, the cyclopentane and the pentane, the product purity can generally reach over 98 percent, and all the byproducts can be used as fuel.

Description

technical field [0001] The present invention relates to a combined process for the comprehensive utilization of partially hydrogenated C5 cuts, in particular to the combined process of producing partially hydrogenated C5 cuts raw materials through a series of rectification separations and reactions to produce methyl tert-amyl ether (TAME), Methods for cyclopentene, cyclopentane and pentane. Background technique [0002] A considerable amount of C5 fractions are by-produced in the process of steam cracking to ethylene in industry. This carbon five fraction can be divided into two categories according to the processing technology and composition. One is the C5 fraction obtained by directly separating the cracked C5 fraction, which contains about 40 to 60% of diolefins such as isoprene, cyclopentadiene and piperylene, These diolefins have active chemical properties and are important raw materials for many fine chemical products. The separation and purification of C5 fractions...

Claims

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Application Information

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IPC IPC(8): C07C43/04C07C41/06C07C9/14C07C9/10C07C13/10C07C13/12C07C7/163C07C7/148C07C7/04
Inventor 倪俊
Owner 上海博润石化科技发展有限公司
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