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Treatment method of butene oxidative dehydrogenation product

A technology of oxidative dehydrogenation and treatment methods, which is applied in the fields of chemical instruments and methods, hydrocarbons, organic chemistry, etc., and can solve problems such as equipment corrosion and easy polymerization of other oxygen-containing compounds, so as to avoid corrosion, reduce waste water, and remove high rate effect

Active Publication Date: 2016-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The technical problem to be solved by the present invention is that the organic acid carried by the oxidative dehydrogenation product of butene corrodes subsequent equipment and causes other oxygen-containing compounds to easily polymerize, and provides a new treatment method for the oxidative dehydrogenation product of butene. It has the advantages of rapid removal of organic acids, ketones, aldehydes and other oxygenated compounds carried in the oxidative dehydrogenation product of butene, high removal rate and less waste water

Method used

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  • Treatment method of butene oxidative dehydrogenation product
  • Treatment method of butene oxidative dehydrogenation product
  • Treatment method of butene oxidative dehydrogenation product

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Effect test

Embodiment 1

[0026] A 100,000 tons / year butene oxidative dehydrogenation to butadiene plant adopts figure 1 According to the process technology, the flow rate of the oxidative dehydrogenation product of butene is 79000 kg / hour, the temperature is 80° C., and the pressure is 0.1 MPa. The composition is shown in Table 1, and the total amount of organic acid contained therein is 210 ppm. There are 2 adsorption beds, one open and one standby, horizontal container with a diameter of 2500mm and a length of 6000mm. The adsorbent contains 95% of the weight of alumina. After deacidification, the reaction gas enters the compressor. The compressor is a reciprocating compressor, compressed to After 1.0 MPa, it enters the aldehyde washing tower. The aldehyde washing tower is a plate tower with 10 plates. The top of the tower is fed with low-temperature desalted water at a temperature of 5°C. The amount of desalted water is 4 tons per hour. The top gas goes to the subsequent refining system. The aldehyd...

Embodiment 2

[0031] A 100,000 tons / year butene oxidative dehydrogenation to butadiene plant adopts figure 1According to the process technology, the flow rate of the oxidative dehydrogenation product of butene is 79000 kg / hour, the temperature is 80° C., and the pressure is 0.1 MPa. The composition is shown in Table 1, and the total amount of organic acid contained therein is 210 ppm. There are 2 adsorption beds, one open and one standby, horizontal container with a diameter of 2500mm and a length of 6000mm. The adsorbent contains 95% of the weight of alumina. After deacidification, the reaction gas enters the compressor. The compressor is a reciprocating compressor, compressed to After 1.3MPa, it enters the aldehyde washing tower. The aldehyde washing tower is a plate tower with 10 plates. The top of the tower is fed with low-temperature desalted water at a temperature of 5°C. The amount of desalted water is 3 tons / hour, and the top gas goes to the subsequent refining system. The aldehyde ...

Embodiment 3

[0034] A 100,000 tons / year butene oxidative dehydrogenation to butadiene plant adopts figure 1 According to the process technology, the flow rate of the oxidative dehydrogenation product of butene is 79000 kg / hour, the temperature is 80° C., and the pressure is 0.1 MPa. The composition is shown in Table 1, and the total amount of organic acid contained therein is 210 ppm. There are 2 adsorption beds, one open and one standby, horizontal container with a diameter of 2500mm and a length of 6000mm. The adsorbent contains 95% of the weight of alumina. After deacidification, the reaction gas enters the compressor. The compressor is a reciprocating compressor, compressed to After 1.3MPa, it enters the aldehyde washing tower. The aldehyde washing tower is a sieve plate tower with 8 plates. The top of the tower is fed with low-temperature desalted water at a temperature of 5°C. The amount of desalted water is 3 tons / hour, and the top gas goes to the subsequent refining system , The al...

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Abstract

The invention relates to a treatment method for butylene oxydehydrogenation products, and mainly solves the problem in the prior art that organic acids in butylene oxydehydrogenation products corrode subsequent equipment and cause easy aggregation of other oxygenated compounds. A technical scheme adopted by the invention is as below: the oxydehydrogenation products are directly sent into an adsorption bed filled with an adsorbent for acid purification; purified reaction gas is cooled and sent into a compressor for compression, and then enters into an aldehyde tower kettle to conduct countercurrent contact with the washing water from the tower top, so as to remove oxygen-containing compound impurities such as aldehydes in the generated gas; and the tower kettle aldehyde-containing wastewater is sent into a sewage treatment system. The technical scheme well solves the above technical problems, and can be used for butylene oxydehydrogenation industrial production process.

Description

technical field [0001] The invention relates to a treatment method for butene oxidative dehydrogenation products. Background technique [0002] Butadiene is an important monomer of synthetic rubber and synthetic resin, mainly used in the synthesis of butadiene rubber, styrene-butadiene rubber, nitrile rubber and ABS resin. Butadiene is also a variety of coatings and organic chemical raw materials. [0003] Oxidative dehydrogenation of butene is a relatively competitive process technology for the production of butadiene at present, and has important practical significance. [0004] The oxidative dehydrogenation of butene to butadiene is to use oxygen to combine with hydrogen in butene molecules in the presence of water vapor to obtain butadiene and structurally stable water. This reaction is basically irreversible. The main reaction equation is as follows: [0005] [0006] Other side effects mainly include: [0007] [0008] [0009] Patent CN100494130C, its fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C11/16C07C7/00C07C7/12
Inventor 刘文杰张洪宇
Owner CHINA PETROLEUM & CHEM CORP