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Isobutene polymerization reaction method and device

A superposition reaction and isobutene technology, applied in the field of isobutene superposition reaction methods and devices, can solve problems such as unfavorable conversion and product quality decline, and achieve the effects of improving conversion rate and reducing cost

Active Publication Date: 2020-09-01
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The above is not conducive to the conversion of isobutene to diisobutene and reduces the quality of the product

Method used

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  • Isobutene polymerization reaction method and device
  • Isobutene polymerization reaction method and device
  • Isobutene polymerization reaction method and device

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Embodiment 1

[0114] combined with figure 1 , the temperature is 30.0℃, the pressure is 0.70MPa, and the flow rate is 5000.0kg / h mixed C 4The temperature from the inhibitor recovery pipeline 13 is 98.8°C, the pressure is 0.70MPa, and the flow rate is 100.0kg / h circulating inhibitor, and the temperature from outside the device is 30.0°C, the pressure is 0.70MPa, and the flow rate is 2.5kg / h. Water (demineralized and deoxidized water) is mixed, and the mixture is heated to 55° C. by the heater 12 and enters the first superposition reactor 1 from the top inlet to perform the first superposition reaction.

[0115] Among them, the liquid hourly volume space velocity during the first superposition reaction is 1.0h -1 , the reaction pressure is controlled at 0.6 MPa, under this pressure the bubble point temperature of the mixed C4 is 68.1° C., and the temperature of 68.1° C. is the reaction temperature of the reaction materials in the first stacked reactor 1 . The heat of reaction produced by th...

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Abstract

The invention discloses an isobutene polymerization reaction method and device, and belongs to the field of petrochemical engineering. The reaction method comprises the following steps: carrying out afirst superposition reaction on a reaction material containing mixed C4 in a first superposition reactor at a first set pressure and a first set temperature; cooling the first reaction product from the first overlapping reactor to a second set temperature, and carrying out a second overlapping reaction in a second overlapping reactor under a second set pressure; and fractionating the second reaction product from the second superposition reactor to obtain a diisobutylene product. Wherein the first set temperature is the bubble point temperature of the mixed C4 under the first set pressure, andthe first set temperature is lower than the deactivation temperature of the catalyst in the first superposition reactor; the second set pressure is greater than the first set pressure. By utilizing the method, the conversion rate of converting isobutene into diisobutene can be remarkably improved, and the cost can be reduced.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to an isobutene superposition reaction method and device. Background technique [0002] The superposition reaction of isobutene (Isobutene, IB) can generate diisobutene including 2,2,4-trimethylpentene (also known as isooctene). The hydrogenation product of diisobutene has a high octane number and is widely used Used as a gasoline additive component. In consideration of energy saving and economicalization, diisobutene products are usually prepared by using mixed C4 containing isobutene, wherein the diisobutene products mainly include diisobutene and some other components. [0003] The prior art provides a method for isobutylene superposition reaction using external circulation to extract heat, so that the reaction materials containing mixed C4 undergo superposition reaction in the superposition reactor, a part of the reaction product is discharged as a product, and another par...

Claims

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Application Information

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IPC IPC(8): C07C2/08C07C7/04C07C11/02
CPCC07C2/08C07C7/04C07C11/02Y02P20/10
Inventor 刘成军李涛孙方宪高青顾维宏郭佳林李倞琛周璇吕晓东
Owner BC P INC CHINA NAT PETROLEUM CORP
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