Technology and system for recycling solvent oil from oil gas of butadiene prepared from butane under oxidative dehydrogenation effect

A technology of oxidative dehydrogenation and solvent oil, applied in the direction of chemical instruments and methods, separation of dispersed particles, separation methods, etc., can solve problems such as endangering human health, generating safety hazards, energy waste, etc., and achieves elimination of safety hazards, simple operation, The effect of improving adsorption efficiency

Active Publication Date: 2012-07-04
中国石油集团东北炼化工程有限公司锦州设计院
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Problems solved by technology

These two methods not only pollute the environment and endanger hum

Method used

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  • Technology and system for recycling solvent oil from oil gas of butadiene prepared from butane under oxidative dehydrogenation effect
  • Technology and system for recycling solvent oil from oil gas of butadiene prepared from butane under oxidative dehydrogenation effect
  • Technology and system for recycling solvent oil from oil gas of butadiene prepared from butane under oxidative dehydrogenation effect

Examples

Experimental program
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Example Embodiment

[0026] Example 1

[0027] like figure 1 As shown, the vacuum desorption recovery system for solvent oil in butadiene oil and gas produced by oxidative dehydrogenation of butene includes a pretreatment system I, an adsorption / desorption system II and a recovery device III. Described pretreatment system I includes oil and gas precision filter 1 and oil and gas cooler 2; Described adsorption / desorption system II includes adsorption / desorption equipment 3 and vacuum pump 4, and adsorption / desorption equipment 3 is composed of a built-in adsorbent. The adsorber I301 and the adsorber II302 are composed of the adsorber I301 and the adsorber II302, which can be alternately adsorbed and desorbed with the vacuum pump 4; the recovery device III includes a gas-liquid separation tank 5, a solvent oil absorption tower 6, and a solvent oil absorption tower 6. The solvent oil circulation pump 7 connected at the bottom of the tower, the solvent oil circulation cooler 8 between the solvent o...

Example Embodiment

[0036] Example 2

[0037] The adsorbent in Example 1 was replaced with carbon fiber, and the process was the same as that in Example 1.

Example Embodiment

[0038] Example 3

[0039] The adsorbent in Example 1 was replaced with silica gel, and the technological process was the same as that in Example 1.

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Abstract

The invention relates to a technology and a system for recycling solvent oil from oil gas of butadiene prepared from butane under an oxidative dehydrogenation effect. The technology comprises the following steps: 1) utilizing a fine oil gas filter to filter a catalyst in the oil gas and utilizing an oil gas cooler to cool the oil gas; 2) causing the cooled oil gas to enter into an adsorption/desorption device, adsorbing the solvent oil in the oil gas, and desorbing after fully adsorbing, thereby obtaining desorbed gas of the solvent oil; and 3) separating the solvent oil from the desorbed gas of the solvent oil by utilizing a separating jar, recycling and reusing. The recycling system comprises a preprocessing system, an adsorption/desorption system and a recycling device, wherein the adsorption/desorption system is capable of alternately adsorbing and desorbing or adsorbing, desorbing and drying. The technology has the advantages that the technology is simple; the operation is convenient; the recycling rate of the solvent oil is high; the emission concentration of the oil gas is low; the potential safety hazard is eliminated; the emission load of the oil gas is controlled; the clean production, energy saving and environmental protection are realized; the whole recycling process is continuous; the adsorption efficiency is increased; the solvent oil is recycled from the oil gas; the solvent oil is reused; and the production cost of the butadiene is saved.

Description

technical field [0001] The invention relates to a process and system for recovering solvent oil in butadiene oil gas produced by oxidative dehydrogenation of butene. Background technique [0002] Butadiene is an important raw material for the production of synthetic rubber. The production of synthetic rubber with butadiene as raw material accounts for more than 80% of the total output of synthetic rubber. With the increase in demand for rubber, the market demand for butadiene is expanding rapidly. [0003] Oxidative dehydrogenation of butene is one of the main methods to produce butadiene, but a large amount of oil and gas will be produced at the top of the absorption tower of the dehydrogenation unit. The main components of oil and gas are water, nitrogen, oxygen, carbon monoxide, carbon dioxide, and dimethylpentane , trimethylpentane and n-hexane, solvent oil containing a large amount of butadiene dehydrogenation unit absorption tower. There are two existing oil and gas t...

Claims

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Application Information

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IPC IPC(8): B01D53/04
Inventor 刘说赵永祥张玉马兴攀王宇谢立颖茹旭佘光达刘文智宋艳玲朱莹赵俊波
Owner 中国石油集团东北炼化工程有限公司锦州设计院
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